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/*
* Copyright (c) 2004, 2025, 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 4982943
* @key headful
* @summary focus lost in text fields or text areas, unable to enter characters from keyboard
* @run main ComponentLostFocusTest
*/
import java.awt.Dialog;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.KeyboardFocusManager;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.TextField;
import java.awt.Toolkit;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.InputEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.imageio.ImageIO;
public class ComponentLostFocusTest {
static Frame frame;
static TextField tf;
static Robot r;
static Dialog dialog = null;
static volatile Point loc;
static volatile int width;
static volatile int top;
static final CountDownLatch focusGainedLatch = new CountDownLatch(1);
private static void createTestUI() {
dialog = new Dialog(frame, "Dialog", true);
frame = new Frame("ComponentLostFocusTest Frame");
frame.setLayout(new FlowLayout());
frame.addWindowFocusListener(new WindowAdapter() {
public void windowGainedFocus(WindowEvent e) {
System.out.println("Frame gained focus: "+e);
}
});
tf = new TextField("Text Field");
frame.add(tf);
frame.setSize(400,300);
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.validate();
}
public static void doTest() {
System.out.println("dialog.setVisible.... ");
new Thread(() -> dialog.setVisible(true)).start();
// The bug is that this construction leads to the redundant xRequestFocus
// By the way, the requestFocusInWindow() works fine before the fix
System.out.println("requesting.... ");
frame.requestFocus();
r.delay(1000);
// Returning the focus to the initial frame will work correctly after the fix
System.out.println("disposing.... ");
dialog.dispose();
r.delay(1000);
// We want to track the GAIN_FOCUS from this time
tf.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
System.out.println("TextField gained focus: " + e);
focusGainedLatch.countDown();
}
});
}
private static void doRequestFocusToTextField() {
// do activation using press title
r.mouseMove(loc.x + width / 2, loc.y + top / 2);
r.waitForIdle();
r.mousePress(InputEvent.BUTTON1_DOWN_MASK);
r.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
r.waitForIdle();
// request focus to the text field
tf.requestFocus();
}
private static void captureScreen() {
try {
final Rectangle screenBounds = new Rectangle(
Toolkit.getDefaultToolkit().getScreenSize());
ImageIO.write(r.createScreenCapture(screenBounds),
"png", new File("ComponentLostFocusTest.png"));
} catch (Exception e) {
e.printStackTrace();
}
}
public static final void main(String args[]) throws Exception {
r = new Robot();
r.setAutoDelay(100);
EventQueue.invokeAndWait(() -> createTestUI());
r.waitForIdle();
r.delay(1000);
try {
EventQueue.invokeAndWait(() -> {
doTest();
loc = frame.getLocationOnScreen();
width = frame.getWidth();
top = frame.getInsets().top;
});
doRequestFocusToTextField();
System.out.println("Focused window: " +
KeyboardFocusManager.getCurrentKeyboardFocusManager().
getFocusedWindow());
System.out.println("Focus owner: " +
KeyboardFocusManager.getCurrentKeyboardFocusManager().
getFocusOwner());
if (!focusGainedLatch.await(5, TimeUnit.SECONDS)) {
captureScreen();
throw new RuntimeException("Waited too long, " +
"TextField got no focus! Test failed.");
}
} finally {
EventQueue.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
}
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