6886678: Clicking on parent JFrame's client area does not switch focus from JWindow to JFrame on Windows

Reviewed-by: dcherepanov, art

jdk/src/windows/native/sun/windows/awt_Component.cpp

@@ -2329,6 +2329,19 @@ MsgRouting AwtComponent::WmMouseDown(UINT flags, int x, int y, int button)
     MSG msg;
     InitMessage(&msg, lastMessage, flags, MAKELPARAM(x, y), x, y);
 
+    AwtWindow *toplevel = GetContainer();
+    if (toplevel && !toplevel->IsSimpleWindow()) {
+        /*
+         * The frame should be focused by click in case it is
+         * the active window but not the focused window. See 6886678.
+         */
+        if (toplevel->GetHWnd() == ::GetActiveWindow() &&
+            toplevel->GetHWnd() != AwtComponent::GetFocusedWindow())
+        {
+            toplevel->AwtSetActiveWindow();
+        }
+    }
+
     SendMouseEvent(java_awt_event_MouseEvent_MOUSE_PRESSED, now, x, y,
                    GetJavaModifiers(), clickCount, JNI_FALSE,
                    GetButton(button), &msg);

jdk/test/java/awt/Focus/FocusOwnerFrameOnClick/FocusOwnerFrameOnClick.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 1995, 2010, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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      FocusOwnerFrameOnClick.java %W% %E%
+  @bug       6886678
+  @summary   Tests that clicking an owner frame switches focus from its owned window.
+  @author    Anton Tarasov: area=awt.focus
+  @library   ../../regtesthelpers
+  @build     Util
+  @run       main FocusOwnerFrameOnClick
+*/
+
+import java.awt.*;
+import java.awt.event.*;
+import java.applet.Applet;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.lang.reflect.InvocationTargetException;
+import test.java.awt.regtesthelpers.Util;
+
+public class FocusOwnerFrameOnClick extends Applet {
+    Robot robot;
+    Frame frame = new Frame("Frame");
+    Window window = new Window(frame);
+    Button fButton = new Button("fButton");
+    Button wButton = new Button("wButton");
+
+    AtomicBoolean focused = new AtomicBoolean(false);
+
+    public static void main(String[] args) {
+        FocusOwnerFrameOnClick app = new FocusOwnerFrameOnClick();
+        app.init();
+        app.start();
+    }
+
+    public void init() {
+        robot = Util.createRobot();
+
+        frame.setLayout(new FlowLayout());
+        frame.setSize(200, 200);
+        frame.add(fButton);
+
+        window.setLocation(300, 0);
+        window.add(wButton);
+        window.pack();
+    }
+
+    public void start() {
+        frame.setVisible(true);
+        Util.waitForIdle(robot);
+
+        window.setVisible(true);
+        Util.waitForIdle(robot);
+
+        if (!wButton.hasFocus()) {
+            if (!Util.trackFocusGained(wButton, new Runnable() {
+                    public void run() {
+                        Util.clickOnComp(wButton, robot);
+                    }
+                }, 2000, false))
+            {
+                throw new TestErrorException("wButton didn't gain focus on showing");
+            }
+        }
+
+        Runnable clickAction = new Runnable() {
+                public void run() {
+                    Point loc = fButton.getLocationOnScreen();
+                    Dimension dim = fButton.getSize();
+
+                    robot.mouseMove(loc.x, loc.y + dim.height + 20);
+                    robot.delay(50);
+                    robot.mousePress(InputEvent.BUTTON1_MASK);
+                    robot.delay(50);
+                    robot.mouseRelease(InputEvent.BUTTON1_MASK);
+                }
+            };
+
+        if (!Util.trackWindowGainedFocus(frame, clickAction, 2000, true)) {
+            throw new TestFailedException("The frame wasn't focused on click");
+        }
+
+        System.out.println("Test passed.");
+    }
+}
+
+/**
+ * Thrown when the behavior being verified is found wrong.
+ */
+class TestFailedException extends RuntimeException {
+    TestFailedException(String msg) {
+        super("Test failed: " + msg);
+    }
+}
+
+/**
+ * Thrown when an error not related to the behavior being verified is encountered.
+ */
+class TestErrorException extends RuntimeException {
+    TestErrorException(String msg) {
+        super("Unexpected error: " + msg);
+    }
+}