content/common/input/web_input_event_traits.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_COMMON_INPUT_WEB_INPUT_EVENT_TRAITS_H_
   6 #define CONTENT_COMMON_INPUT_WEB_INPUT_EVENT_TRAITS_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "content/common/input/scoped_web_input_event.h"
  12 #include "third_party/WebKit/public/web/WebInputEvent.h"
  13
  14 namespace content {
  15
  16 // Utility class for performing operations on and with WebInputEvents.
  17 class CONTENT_EXPORT WebInputEventTraits {
  18  public:
  19   static const char* GetName(blink::WebInputEvent::Type type);
  20   static std::string ToString(const blink::WebInputEvent& event);
  21   static size_t GetSize(blink::WebInputEvent::Type type);
  22   static ScopedWebInputEvent Clone(const blink::WebInputEvent& event);
  23   static void Delete(blink::WebInputEvent* event);
  24   static bool CanCoalesce(const blink::WebInputEvent& event_to_coalesce,
  25                           const blink::WebInputEvent& event);
  26   static void Coalesce(const blink::WebInputEvent& event_to_coalesce,
  27                        blink::WebInputEvent* event);
  28   static bool WillReceiveAckFromRenderer(const blink::WebInputEvent& event);
  29
  30   // Return uniqueTouchEventId for WebTouchEvent, otherwise return 0.
  31   static uint32 GetUniqueTouchEventId(const blink::WebInputEvent& event);
  32 };
  33
  34 }  // namespace content
  35
  36 #endif  // CONTENT_COMMON_INPUT_WEB_INPUT_EVENT_TRAITS_H_