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8305942: Open source several AWT Focus related tests

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Reviewed-by: prr
This commit is contained in:
Prasanta Sadhukhan 2023-04-21 02:51:12 +00:00
parent 9a68d1d952
commit 8346ae2bc1
6 changed files with 831 additions and 0 deletions
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215
test/jdk/java/awt/Focus/QuickTypeTest.java Normal file
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/*
* Copyright (c) 2002, 2023, 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 4423838
@summary KEY_TYPED and KEY_PRESSED generated by the same key are notified to
different TextFields
@key headful
@run main QuickTypeTest
*/
import java.awt.AWTException;
import java.awt.BorderLayout;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.Point;
import java.awt.Robot;
import java.awt.TextArea;
import java.awt.EventQueue;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Properties;
import javax.swing.JFrame;
import javax.swing.JTextField;
public class QuickTypeTest {
static final int TEST_TIMEOUT=10000;
static JFrame frame1;
static JFrame frame2;
static JTextField tf1;
static JTextField tf2;
static SmartKeyAdapter ska;
static Object keyMonitor;
public static void main(String[] args) throws Exception {
try {
EventQueue.invokeAndWait(() -> {
frame1 = new JFrame("First Frame");
frame2 = new JFrame("Second Frame");
tf1 = new JTextField("", 10);
tf2 = new JTextField("", 10);
frame1.getContentPane().add(tf1);
frame2.getContentPane().add(tf2);
frame1.setLocation(200,220);
frame2.setLocation(220,300);
frame1.pack();
frame2.pack();
keyMonitor = new Object();
ska = new SmartKeyAdapter(frame2, keyMonitor);
tf1.addKeyListener(ska);
frame1.setVisible(true);
});
Robot robot = new Robot();
robot.setAutoWaitForIdle(true);
robot.setAutoDelay(100);
robot.waitForIdle();
robot.delay(1000);
Object tf1Monitor = new Object();
MonitoredFocusListener monitorer = new MonitoredFocusListener(tf1Monitor);
tf1.addFocusListener(monitorer);
Point origin = tf1.getLocationOnScreen();
Dimension dim = tf1.getSize();
robot.mouseMove((int)origin.getX() + (int)dim.getWidth()/2,
(int)origin.getY() + (int)dim.getHeight()/2);
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
if (!tf1.isFocusOwner()) {
synchronized (tf1Monitor) {
tf1Monitor.wait(TEST_TIMEOUT);
}
}
if (!tf1.isFocusOwner()) {
throw new RuntimeException("TEST FAILED. tf1 doesn't receive focus.");
}
robot.keyPress(KeyEvent.VK_A);
robot.keyRelease(KeyEvent.VK_A);
robot.keyPress(KeyEvent.VK_B);
robot.keyRelease(KeyEvent.VK_B);
if (!ska.isFrameShown) {
synchronized (keyMonitor) {
keyMonitor.wait(TEST_TIMEOUT);
}
}
if (!ska.isFrameShown) {
throw new RuntimeException("TEST FAILED. Second frame is not shown.");
}
Object waitMonitor = new Object();
ReleaseWaiter waiter = new ReleaseWaiter(waitMonitor, KeyEvent.VK_C);
tf1.addKeyListener(waiter);
tf2.addKeyListener(waiter);
robot.keyPress(KeyEvent.VK_C);
robot.keyRelease(KeyEvent.VK_C);
synchronized (waitMonitor) {
waitMonitor.wait(2000);
}
if ((tf1.getText().length() > 2) || (tf2.getText().length() < 1)) {
System.out.println("tf1's text = \"" + tf1.getText() + "\"");
System.out.println("tf2's text = \"" + tf2.getText() + "\"");
System.out.println("l1 = " + tf1.getText().length());
System.out.println("l2 = " + tf2.getText().length());
throw new RuntimeException("TEST FAILED.");
}
} finally {
EventQueue.invokeAndWait(() -> {
if (frame1 != null) {
frame1.dispose();
}
if (frame2 != null) {
frame2.dispose();
}
});
}
}
}// class QuickTypeTest
class ReleaseWaiter extends KeyAdapter {
Object monitor;
int keycode;
public ReleaseWaiter(Object monitor, int keycode) {
this.monitor = monitor;
this.keycode = keycode;
}
public void keyReleased(KeyEvent ke) {
System.out.println("keyReleased " + ke.getKeyCode());
if (ke.getKeyCode() == keycode) {
synchronized (monitor) {
monitor.notify();
}
}
}
}
class SmartKeyAdapter implements KeyListener {
JFrame frame;
int charCounter = 0;
boolean isFrameShown = false;
Object monitor;
public SmartKeyAdapter(JFrame frame, Object monitor) {
this.frame = frame;
this.monitor = monitor;
}
public void keyReleased(KeyEvent ke) {
System.out.println(ke.toString());
}
public void keyPressed(KeyEvent ke) {
System.out.println(ke.toString());
charCounter++;
if (charCounter == 2) {
frame.setVisible(true);
isFrameShown = true;
synchronized (monitor) {
monitor.notify();
}
}
}
public void keyTyped(KeyEvent ke) {
System.out.println(ke.toString());
}
}
class MonitoredFocusListener extends FocusAdapter {
Object monitor;
public MonitoredFocusListener(Object monitor) {
this.monitor = monitor;
}
public void focusLost(FocusEvent fe) {
System.out.println(fe.toString());
}
public void focusGained(FocusEvent fe) {
System.out.println(fe.toString());
synchronized (monitor) {
monitor.notify();
}
}
}

220
test/jdk/java/awt/Focus/RowToleranceTransitivityTest.java Normal file
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/*
* Copyright (c) 2005, 2023, 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 5070991
@key headful
@summary Tests for a transitivity problem with ROW_TOLERANCE in SortingFTP.
@run main RowToleranceTransitivityTest
*/
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.KeyboardFocusManager;
import java.awt.Panel;
import java.awt.Point;
import java.awt.Robot;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JFormattedTextField;
import javax.swing.JLabel;
import javax.swing.JPanel;
import java.util.concurrent.atomic.AtomicBoolean;
import java.lang.reflect.InvocationTargetException;
import java.util.concurrent.atomic.AtomicBoolean;
public class RowToleranceTransitivityTest {
static JFrame frame;
static JPanel panel;
static JFormattedTextField ft;
static JCheckBox cb;
static GridBagConstraints gc;
static Robot robot;
static AtomicBoolean focusGained = new AtomicBoolean(false);
public static void main(String[] args) throws Exception {
robot = new Robot();
robot.setAutoDelay(100);
robot.setAutoWaitForIdle(true);
try {
EventQueue.invokeAndWait(() -> {
gc = new GridBagConstraints();
frame = new JFrame("JFrame");
JPanel panel = new JPanel(new GridBagLayout());
ft = new JFormattedTextField();
cb = new JCheckBox("JCheckBox");
Dimension dim = new Dimension(100, ft.getPreferredSize().height);
ft.setPreferredSize(dim);
ft.setMinimumSize(dim);
gc.gridx = 5;
gc.gridy = 1;
gc.gridwidth = 10;
panel.add(ft, gc);
gc.gridy = 3;
panel.add(cb, gc);
cb.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
System.out.println(e.toString());
synchronized (focusGained) {
focusGained.set(true);
focusGained.notifyAll();
}
}
});
gc.weightx = 1.0;
gc.gridwidth = 1;
gc.gridy = 0;
gc.gridx = 0;
for (int n = 0; n < 7; n++) {
panel.add(getlabel(), gc);
gc.gridy++;
}
gc.gridx = 0;
gc.gridy = 0;
for (int n = 0; n < 7; n++) {
panel.add(getlabel(), gc);
gc.gridx++;
}
frame.getContentPane().add(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
frame.setAlwaysOnTop(true);
});
robot.waitForIdle();
robot.delay(1000);
test();
} finally {
if (frame != null) {
frame.dispose();
}
}
}
static void test() throws Exception {
robot.delay(500);
// Set focus on the first component to start traversal
if (!setFocusOn(ft, new Runnable() {
public void run() {
clickOn(ft);
}
})) {
System.out.println("Couldn't set focus on " + ft);
throw new RuntimeException("Test couldn't be performed.");
}
robot.delay(500);
// Try to traverse
if (!setFocusOn(cb, new Runnable() {
public void run() {
robot.keyPress(KeyEvent.VK_TAB);
}
})) {
System.out.println("Focus got stuck while traversing.");
throw new RuntimeException("Test failed!");
}
System.out.println("Test passed.");
}
static boolean setFocusOn(Component comp, Runnable action) {
if (KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner() == comp) {
System.out.println("Already focus owner: " + comp);
return true;
}
focusGained.set(false);
System.out.println("Setting focus on " + comp);
comp.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
System.out.println(e.toString());
synchronized (focusGained) {
focusGained.set(true);
focusGained.notifyAll();
}
}
});
action.run();
synchronized (focusGained) {
if (!focusGained.get()) {
try {
focusGained.wait(3000);
} catch (InterruptedException e) {
System.out.println("Unexpected exception caught!");
throw new RuntimeException(e);
}
}
}
return focusGained.get();
}
static JLabel getlabel(){
Dimension dim = new Dimension(5, 9); // LayoutComparator.ROW_TOLERANCE = 10;
JLabel l = new JLabel("*");
l.setMinimumSize(dim);
l.setMaximumSize(dim);
l.setPreferredSize(dim);
return l;
}
static void clickOn(Component c) {
Point p = c.getLocationOnScreen();
Dimension d = c.getSize();
System.out.println("Clicking " + c);
if (c instanceof Frame) {
robot.mouseMove(p.x + (int)(d.getWidth()/2), p.y + ((Frame)c).getInsets().top/2);
} else {
robot.mouseMove(p.x + (int)(d.getWidth()/2), p.y + (int)(d.getHeight()/2));
}
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
robot.waitForIdle();
}
}

74
test/jdk/java/awt/Focus/TemporaryLostComponentDeadlock.java Normal file
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/*
* Copyright (c) 2003, 2023, 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 4794413
* @summary Tests that access to temporaryLostComponent from two different threads doesn't cause a deadlock
* @key headful
* @run main TemporaryLostComponentDeadlock
*/
import java.awt.Button;
import java.awt.Dialog;
import java.awt.EventQueue;
import java.awt.Frame;
public class TemporaryLostComponentDeadlock {
static Dialog frame1;
static Frame frame;
public static void main(String[] args) throws Exception {
EventQueue.invokeAndWait(() -> {
frame = new Frame("frame");
frame1 = new Dialog(frame, "Frame 1", false);
frame1.add(new Button("focus owner"));
frame1.pack();
frame1.setLocationRelativeTo(null);
frame1.setVisible(true);
});
Thread t1 = new Thread() {
public void run() {
synchronized(frame1) {
frame1.dispose();
synchronized(frame1) {
frame1.notify();
}
}
}
};
try {
synchronized(frame1) {
t1.start();
frame1.wait();
}
} catch( InterruptedException ie) {
} finally {
if (frame != null) {
frame.dispose();
}
}
System.out.println("Test PASSED");
}
}// class TemporaryLostComponentDeadlock

112
test/jdk/java/awt/Focus/TraversalKeysPropertyNamesTest.java Normal file
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/*
* Copyright (c) 2001, 2023, 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 4457455
@summary Component and KeyboardFocusManager use wrong names of the properties
@run main TraversalKeysPropertyNamesTest
*/
import java.awt.AWTKeyStroke;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.EventQueue;
import java.awt.KeyboardFocusManager;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.HashSet;
public class TraversalKeysPropertyNamesTest implements PropertyChangeListener {
final String[] properties = {
"forwardDefaultFocusTraversalKeys",
"backwardDefaultFocusTraversalKeys",
"upCycleDefaultFocusTraversalKeys",
"downCycleDefaultFocusTraversalKeys",
"forwardFocusTraversalKeys",
"backwardFocusTraversalKeys",
"upCycleFocusTraversalKeys",
"downCycleFocusTraversalKeys"
};
final int PROPERTIES_COUNT = properties.length;
boolean[] flags = new boolean[PROPERTIES_COUNT];
public static void main(String[] args) throws Exception {
TraversalKeysPropertyNamesTest test = new TraversalKeysPropertyNamesTest();
test.start();
}
public void start() throws Exception {
EventQueue.invokeAndWait(() -> {
Container cont = new Container() {};
HashSet forwardKeys = new HashSet();
forwardKeys.add(AWTKeyStroke.getAWTKeyStroke("ctrl A"));
HashSet backwardKeys = new HashSet();
backwardKeys.add(AWTKeyStroke.getAWTKeyStroke("ctrl B"));
HashSet upKeys = new HashSet();
upKeys.add(AWTKeyStroke.getAWTKeyStroke("ctrl C"));
HashSet downKeys = new HashSet();
downKeys.add(AWTKeyStroke.getAWTKeyStroke("ctrl D"));
KeyboardFocusManager manager =
KeyboardFocusManager.getCurrentKeyboardFocusManager();
manager.addPropertyChangeListener(this);
manager.setDefaultFocusTraversalKeys(
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, backwardKeys);
manager.setDefaultFocusTraversalKeys(
KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, forwardKeys);
manager.setDefaultFocusTraversalKeys(
KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS, downKeys);
manager.setDefaultFocusTraversalKeys(
KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, upKeys);
cont.addPropertyChangeListener(this);
cont.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, backwardKeys);
cont.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, forwardKeys);
cont.setFocusTraversalKeys(KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS, downKeys);
cont.setFocusTraversalKeys(KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, upKeys);
for (int i = 0; i < PROPERTIES_COUNT; i++) {
if (!flags[i]) {
throw new RuntimeException(
"Notification on "+properties[i]+" change was not received");
}
}
});
}// start()
public void propertyChange(PropertyChangeEvent pce) {
String property = pce.getPropertyName();
System.err.println(property);
int index;
for (index = 0; index < PROPERTIES_COUNT; index++) {
if (property.equals(properties[index])) {
break;
}
}
if (index < PROPERTIES_COUNT) {
flags[index] = true;
}
}
}// class TraversalKeysPropertyNamesTest

95
test/jdk/java/awt/Focus/UpFocusCycleTest.java Normal file
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/*
* Copyright (c) 2001, 2023, 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 4394789
@summary KeyboardFocusManager.upFocusCycle is not working for Swing properly
@key headful
@run main UpFocusCycleTest
*/
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Color;
import java.awt.DefaultKeyboardFocusManager;
import java.awt.EventQueue;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.Robot;
import javax.swing.DefaultFocusManager;
import javax.swing.JButton;
import javax.swing.JFrame;
public class UpFocusCycleTest {
static boolean isFailed = true;
static Object sema = new Object();
static JFrame frame;
public static void main(String[] args) throws Exception {
try {
Robot robot = new Robot();
EventQueue.invokeAndWait(() -> {
frame = new JFrame("Test frame");
Container container1 = frame.getContentPane();
container1.setBackground(Color.yellow);
JButton button = new JButton("Button");
button.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent fe) {
DefaultKeyboardFocusManager manager = new DefaultFocusManager();
manager.upFocusCycle(button);
System.out.println("Button receive focus");
frame.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent fe) {
System.out.println("Frame receive focus");
synchronized (sema) {
isFailed = false;
sema.notifyAll();
}
}
});
}
});
container1.add(button,BorderLayout.WEST);
button.requestFocus();
frame.setSize(300,300);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
});
robot.waitForIdle();
robot.delay(1000);
if (isFailed) {
System.out.println("Test FAILED");
throw new RuntimeException("Test FAILED");
} else {
System.out.println("Test PASSED");
}
} finally {
if (frame != null) {
frame.dispose();
}
}
}
}// class UpFocusCycleTest

115
test/jdk/java/awt/Focus/VetoableChangeListenerLoopTest.java Normal file
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/*
* Copyright (c) 2004, 2023, 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 5074189
@summary Tests that VetoableChangeListener doesn't initiate infinite loop.
@key headful
@run main VetoableChangeListenerLoopTest
*/
import java.awt.AWTEvent;
import java.awt.Button;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.KeyboardFocusManager;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.AWTEventListener;
import java.awt.event.FocusEvent;
import java.awt.event.WindowEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyVetoException;
import java.beans.VetoableChangeListener;
public class VetoableChangeListenerLoopTest {
static Button b1;
static Button b2;
static Frame frame;
static Robot robot;
static int counter = 0;
public static void main(String[] args) throws Exception {
try {
robot = new Robot();
EventQueue.invokeAndWait(() -> {
KeyboardFocusManager.getCurrentKeyboardFocusManager().
addVetoableChangeListener(new VetoableChangeListener () {
public void vetoableChange(PropertyChangeEvent evt)
throws PropertyVetoException {
if (b1.equals(evt.getNewValue())) {
System.out.println("VETOING: " + (counter++));
if (counter > 2) {
throw new RuntimeException("Test failed!");
}
throw new PropertyVetoException("Change in property", evt);
}
}
});
Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
public void eventDispatched(AWTEvent e) {
System.out.println(e.toString());
}
}, FocusEvent.FOCUS_EVENT_MASK | WindowEvent.WINDOW_FOCUS_EVENT_MASK);
b1 = new Button("Button 1");
b2 = new Button("Button 2");
Frame frame = new Frame();
frame.add(b1);
frame.add(b2);
frame.setSize(200, 100);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
});
robot.delay(1000);
test();
} finally {
if (frame != null) {
frame.dispose();
}
}
}
static void test() {
b2.requestFocusInWindow();
waitTillFocus(b2);
b2.setVisible(false);
}
static void waitTillFocus(Component comp) {
while (!checkFocusOwner(comp)) {
robot.delay(100);
}
}
static boolean checkFocusOwner(Component comp) {
return (comp == KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner());
}
}