extensions/renderer/activity_log_converter_strategy.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 EXTENSIONS_RENDERER_ACTIVITY_LOG_CONVERTER_STRATEGY_H_
   6 #define EXTENSIONS_RENDERER_ACTIVITY_LOG_CONVERTER_STRATEGY_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/macros.h"
  10 #include "content/public/renderer/v8_value_converter.h"
  11 #include "v8/include/v8.h"
  12
  13 namespace extensions {
  14
  15 // This class is used by activity logger and extends behavior of
  16 // V8ValueConverter. It overwrites conversion of V8 arrays and objects.  When
  17 // converting arrays and objects, we must not invoke any JS code which may
  18 // result in triggering activity logger. In such case, the log entries will be
  19 // generated due to V8 object conversion rather than extension activity.
  20 class ActivityLogConverterStrategy
  21     : public content::V8ValueConverter::Strategy {
  22  public:
  23   typedef content::V8ValueConverter::Strategy::FromV8ValueCallback
  24       FromV8ValueCallback;
  25
  26   ActivityLogConverterStrategy();
  27   virtual ~ActivityLogConverterStrategy();
  28
  29   // content::V8ValueConverter::Strategy implementation.
  30   virtual bool FromV8Object(v8::Handle<v8::Object> value,
  31                             base::Value** out,
  32                             v8::Isolate* isolate,
  33                             const FromV8ValueCallback& callback) const OVERRIDE;
  34   virtual bool FromV8Array(v8::Handle<v8::Array> value,
  35                            base::Value** out,
  36                            v8::Isolate* isolate,
  37                            const FromV8ValueCallback& callback) const OVERRIDE;
  38
  39  private:
  40   bool FromV8Internal(v8::Handle<v8::Object> value,
  41                       base::Value** out,
  42                       v8::Isolate* isolate,
  43                       const FromV8ValueCallback& callback) const;
  44
  45   DISALLOW_COPY_AND_ASSIGN(ActivityLogConverterStrategy);
  46 };
  47
  48 }  // namespace extensions
  49
  50 #endif  // EXTENSIONS_RENDERER_ACTIVITY_LOG_CONVERTER_STRATEGY_H_