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
13namespace 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.
20class 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_
51