7050935: closed/java/awt/Choice/WheelEventsConsumed/WheelEventsConsumed.html fails on win32

Reviewed-by: art, dcherepanov

src/windows/native/sun/windows/awt_Choice.cpp

@@ -396,12 +396,6 @@ LRESULT CALLBACK AwtChoice::ListWindowProc(HWND hwnd, UINT message,
 
     DASSERT(::IsWindow(hwnd));
 
-    // This branch is required for the proper work of AwtComponent::GetComponent() method
-    // while hovering drop-down list
-    if (message == WmAwtIsComponent) {
-        return (LRESULT)TRUE;
-    }
-
     switch (message) {
         case WM_LBUTTONDOWN: {
             DWORD curPos = ::GetMessagePos();

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

@@ -364,6 +364,7 @@ AwtComponent* AwtComponent::GetComponentImpl(HWND hWnd) {
     AwtComponent *component =
         (AwtComponent *)::GetWindowLongPtr(hWnd, GWLP_USERDATA);
     DASSERT(!component || !IsBadReadPtr(component, sizeof(AwtComponent)) );
+    DASSERT(!component || component->GetHWnd() == hWnd );
     return component;
 }
 

src/windows/native/sun/windows/awt_Toolkit.cpp

@@ -1444,7 +1444,6 @@ BOOL AwtToolkit::PreProcessMouseMsg(AwtComponent* p, MSG& msg)
     AwtComponent* mouseComp =
         AwtComponent::GetComponent(hWndFromPoint);
     // Need extra copies for non-client area issues
-    AwtComponent* mouseWheelComp = mouseComp;
     HWND hWndForWheel = hWndFromPoint;
 
     // If the point under the mouse isn't in the client area,
@@ -1510,9 +1509,9 @@ BOOL AwtToolkit::PreProcessMouseMsg(AwtComponent* p, MSG& msg)
      */
 
     if (msg.message == WM_MOUSEWHEEL &&
-        mouseWheelComp != NULL) { //i.e. mouse is over client area for this
-                                  //window
-        msg.hwnd = hWndForWheel;
+        AwtToolkit::MainThread() == ::GetWindowThreadProcessId(hWndForWheel, NULL)) {
+            //i.e. mouse is over client area for this window
+            msg.hwnd = hWndForWheel;
     }
 
     /*

test/java/awt/Choice/ChoiceMouseWheelTest/ChoiceMouseWheelTest.java

+/*
+ * Copyright (c) 2011, 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 7050935
+  @summary closed/java/awt/Choice/WheelEventsConsumed/WheelEventsConsumed.html fails on win32
+  @author Oleg Pekhovskiy: area=awt-choice
+  @run main ChoiceMouseWheelTest
+*/
+
+import test.java.awt.regtesthelpers.Util;
+
+import java.awt.*;
+import java.awt.event.*;
+
+public class ChoiceMouseWheelTest extends Frame {
+
+    private volatile boolean itemChanged = false;
+    private volatile boolean wheelMoved = false;
+    private volatile boolean frameExited = false;
+
+    public static void main(String[] args) {
+        new ChoiceMouseWheelTest();
+    }
+
+    ChoiceMouseWheelTest() {
+        super("ChoiceMouseWheelTest");
+        setLayout(new FlowLayout());
+
+        Choice choice = new Choice();
+
+        addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosing(WindowEvent e) {
+                System.exit(0);
+            }
+        });
+
+        for(Integer i = 0; i < 50; i++) {
+            choice.add(i.toString());
+        }
+
+        choice.addItemListener(new ItemListener() {
+            public void itemStateChanged(ItemEvent e) {
+                itemChanged = true;
+            }
+        });
+        choice.addMouseWheelListener(new MouseWheelListener() {
+            public void mouseWheelMoved(MouseWheelEvent e) {
+                wheelMoved = true;
+            }
+        });
+
+        addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseExited(MouseEvent e) {
+                frameExited = true;
+            }
+        });
+
+        add(choice);
+        setSize(200, 300);
+        setVisible(true);
+        toFront();
+
+        try {
+            Robot robot = new Robot();
+            robot.setAutoDelay(20);
+            Util.waitForIdle(robot);
+
+            Point pt = choice.getLocationOnScreen();
+            Dimension size = choice.getSize();
+            int x = pt.x + size.width / 3;
+            robot.mouseMove(x, pt.y + size.height / 2);
+
+            // Test mouse wheel over the choice
+            String name = Toolkit.getDefaultToolkit().getClass().getName();
+            if(!name.equals("sun.awt.X11.XToolkit")) { // mouse wheel doesn't work for the choice on X11, so skip it
+                robot.mouseWheel(1);
+                Util.waitForIdle(robot);
+
+                if(!wheelMoved || !itemChanged) {
+                    throw new RuntimeException("Mouse Wheel over the choice failed!");
+                }
+            }
+
+            // Test mouse wheel over the drop-down list
+            robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
+            Util.waitForIdle(robot);
+            robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
+            Util.waitForIdle(robot);
+
+            int y = getLocationOnScreen().y + getSize().height;
+            while(!frameExited && y >= 0) { // move to the bottom of drop-down list
+                robot.mouseMove(x, --y);
+                Util.waitForIdle(robot);
+            }
+
+            if(x < 0) {
+                throw new RuntimeException("Could not enter drop-down list!");
+            }
+
+            y -= choice.getHeight() / 2;
+            robot.mouseMove(x, y); // move to the last visible item in the drop-down list
+            Util.waitForIdle(robot);
+
+            robot.mouseWheel(choice.getItemCount()); // wheel to the last item
+            Util.waitForIdle(robot);
+
+            // click the last item
+            itemChanged = false;
+            robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
+            Util.waitForIdle(robot);
+            robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
+            Util.waitForIdle(robot);
+
+            if(!itemChanged || choice.getSelectedIndex() != choice.getItemCount() - 1) {
+                throw new RuntimeException("Mouse Wheel scroll position error!");
+            }
+
+            System.exit(0);
+
+        } catch (AWTException e) {
+            throw new RuntimeException("AWTException occurred - problem creating robot!");
+        }
+    }
+}
+