--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/dom/WheelEvent.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2001 Peter Kelly (pmk@post.com)
+ * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
+ * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
+ * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef WheelEvent_h
+#define WheelEvent_h
+
+#include "MouseRelatedEvent.h"
+
+namespace WebCore {
+
+    // extension: mouse wheel event
+    class WheelEvent : public MouseRelatedEvent {
+    public:
+        enum Granularity { Pixel, Line, Page };
+
+        static PassRefPtr<WheelEvent> create()
+        {
+            return adoptRef(new WheelEvent);
+        }
+        static PassRefPtr<WheelEvent> create(float wheelTicksX, float wheelTicksY,
+            float rawDeltaX, float rawDeltaY, Granularity granularity, PassRefPtr<AbstractView> view,
+            int screenX, int screenY, int pageX, int pageY,
+            bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
+        {
+            return adoptRef(new WheelEvent(wheelTicksX, wheelTicksY, rawDeltaX, rawDeltaY,
+                granularity, view, screenX, screenY, pageX, pageY,
+                ctrlKey, altKey, shiftKey, metaKey));
+        }
+
+        void initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>,
+                            int screenX, int screenY, int pageX, int pageY,
+                            bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
+
+        void initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>,
+                                  int screenX, int screenY, int pageX, int pageY,
+                                  bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
+
+        int wheelDelta() const { if (m_wheelDeltaY == 0) return m_wheelDeltaX; return m_wheelDeltaY; }
+        int wheelDeltaX() const { return m_wheelDeltaX; }
+        int wheelDeltaY() const { return m_wheelDeltaY; }
+        int rawDeltaX() const { return m_rawDeltaX; }
+        int rawDeltaY() const { return m_rawDeltaY; }
+        Granularity granularity() const { return m_granularity; }
+
+        // Needed for Objective-C legacy support
+        bool isHorizontal() const { return m_wheelDeltaX; }
+
+    private:
+        WheelEvent();
+        WheelEvent(float wheelTicksX, float wheelTicksY, float rawDeltaX, float rawDeltaY,
+                   Granularity granularity, PassRefPtr<AbstractView>,
+                   int screenX, int screenY, int pageX, int pageY,
+                   bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
+
+        virtual bool isWheelEvent() const;
+        
+        int m_wheelDeltaX;
+        int m_wheelDeltaY;
+
+        int m_rawDeltaX;
+        int m_rawDeltaY;
+        Granularity m_granularity;
+    };
+
+} // namespace WebCore
+
+#endif // WheelEvent_h