content/common/input/input_event_stream_validator.h

   1 // Copyright 2014 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_INPUT_EVENT_STREAM_VALIDATOR_H_
   6 #define CONTENT_COMMON_INPUT_INPUT_EVENT_STREAM_VALIDATOR_H_
   7
   8 #include <string>
   9
  10 #include "content/common/input/gesture_event_stream_validator.h"
  11 #include "content/common/input/touch_event_stream_validator.h"
  12
  13 namespace blink {
  14 class WebInputEvent;
  15 }
  16
  17 namespace content {
  18
  19 // DCHECKs that the stream of WebInputEvents passed to OnEvent is
  20 // valid. Currently only validates touch and touchscreen gesture events.
  21 class InputEventStreamValidator {
  22  public:
  23   InputEventStreamValidator();
  24   ~InputEventStreamValidator();
  25
  26   void Validate(const blink::WebInputEvent&);
  27
  28  private:
  29   bool ValidateImpl(const blink::WebInputEvent&, std::string* error_msg);
  30
  31   GestureEventStreamValidator gesture_validator_;
  32   TouchEventStreamValidator touch_validator_;
  33   std::string error_msg_;
  34   const bool enabled_;
  35
  36   DISALLOW_COPY_AND_ASSIGN(InputEventStreamValidator);
  37 };
  38
  39 }  // namespace content
  40
  41 #endif  // CONTENT_COMMON_INPUT_INPUT_EVENT_STREAM_VALIDATOR_H_