8284521: Write an automated regression test for RFE 4371575

Backport-of: 447c2d13d055fbe640ec4714a961543a03a4f2ad

Author: GoeLin

test/jdk/javax/swing/JComponent/JComponentSetRequestFocusEnabledTest.java

@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2001, 2022, 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.
+ */
+
+import java.awt.Point;
+import java.awt.Robot;
+import java.awt.event.InputEvent;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.stream.Collectors;
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UIManager.LookAndFeelInfo;
+import javax.swing.UnsupportedLookAndFeelException;
+
+import static javax.swing.UIManager.getInstalledLookAndFeels;
+
+/*
+ * @test
+ * @key headful
+ * @bug 4371575
+ * @summary This testcase tests RFE-4371575 request, verifies that
+ *          JComponent.setRequestFocusEnabled() works as expected
+ * @run main JComponentSetRequestFocusEnabledTest
+ */
+public class JComponentSetRequestFocusEnabledTest {
+
+    private static JButton button;
+    private static Robot robot;
+    private static JFrame frame;
+
+    public static void main(String[] args) throws Exception {
+        robot = new Robot();
+        robot.setAutoWaitForIdle(true);
+        robot.setAutoDelay(200);
+        List<String> lafs = Arrays.stream(getInstalledLookAndFeels())
+                                  .map(LookAndFeelInfo::getClassName)
+                                  .collect(Collectors.toList());
+        for (final String laf : lafs) {
+            try {
+                AtomicBoolean lafSetSuccess = new AtomicBoolean(false);
+                SwingUtilities.invokeAndWait(() -> {
+                    lafSetSuccess.set(setLookAndFeel(laf));
+                    if (lafSetSuccess.get()) {
+                        createUI();
+                    }
+                });
+                if (!lafSetSuccess.get()) {
+                    continue;
+                }
+                robot.waitForIdle();
+
+                mouseClick(button);
+
+                if (!button.isFocusOwner()) {
+                    System.out.println("Test Passed in " + laf);
+                } else {
+                    throw new RuntimeException(
+                            "Test Failed, button has focus in " + laf);
+                }
+            } finally {
+                SwingUtilities.invokeAndWait(
+                        JComponentSetRequestFocusEnabledTest::disposeFrame);
+            }
+        }
+    }
+
+    private static void mouseClick(JButton jButton) throws Exception {
+        final AtomicReference<Point> loc = new AtomicReference<>();
+        SwingUtilities
+                .invokeAndWait(() -> loc.set(jButton.getLocationOnScreen()));
+        final Point location = loc.get();
+        robot.mouseMove(location.x + 10, location.y + 10);
+        robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
+        robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
+    }
+
+    public static void createUI() {
+        frame = new JFrame();
+        JPanel panel = new JPanel();
+        panel.add(new JButton("Focused"));
+        panel.add(button = new JButton("Unfocusable"));
+
+        button.setRequestFocusEnabled(false);
+
+        frame.setContentPane(panel);
+        frame.setSize(150, 100);
+        frame.setLocationRelativeTo(null);
+        frame.pack();
+        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+        frame.setVisible(true);
+    }
+
+    private static boolean setLookAndFeel(String lafName) {
+        try {
+            UIManager.setLookAndFeel(lafName);
+        } catch (UnsupportedLookAndFeelException ignored) {
+            System.out.println("Ignoring Unsupported L&F: " + lafName);
+            return false;
+        } catch (ClassNotFoundException | InstantiationException
+                | IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+        return true;
+    }
+
+    private static void disposeFrame() {
+        if (frame != null) {
+            frame.dispose();
+            frame = null;
+        }
+    }
+
+}