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chromium / chromium / src / f2eec2ece4d15d682bae05faf4fb3c24db1c8972 / . / gin / per_context_data.h
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abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]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 GIN_PER_CONTEXT_DATA_H_
6#define GIN_PER_CONTEXT_DATA_H_
7
abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]8#include "base/basictypes.h"
sky@chromium.orgf2eec2ec2014-02-28 15:26:49[diff] [blame^]9#include "base/supports_user_data.h"
jochen@chromium.org48c21632013-12-12 21:32:34[diff] [blame]10#include "gin/gin_export.h"
abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]11#include "v8/include/v8.h"
12
13namespace gin {
14
abarth@chromium.org0d72f002013-11-25 02:19:34[diff] [blame]15class Runner;
16
abarth@chromium.org60531d52013-11-27 02:10:15[diff] [blame]17// There is one instance of PerContextData per v8::Context managed by Gin. This
sky@chromium.orgf2eec2ec2014-02-28 15:26:49[diff] [blame^]18// class stores all the Gin-related data that varies per context. Arbitrary data
19// can be associated with this class by way of the SupportsUserData methods.
20// Instances of this class (and any associated user data) are destroyed before
21// the associated v8::Context.
22class GIN_EXPORT PerContextData : public base::SupportsUserData {
abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]23 public:
24 explicit PerContextData(v8::Handle<v8::Context> context);
sky@chromium.orgf2eec2ec2014-02-28 15:26:49[diff] [blame^]25 virtual ~PerContextData();
abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]26
27 // Can return NULL after the ContextHolder has detached from context.
sky@chromium.orgf2eec2ec2014-02-28 15:26:49[diff] [blame^]28 static PerContextData* From(v8::Handle<v8::Context> context);
abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]29
abarth@chromium.org60531d52013-11-27 02:10:15[diff] [blame]30 // The Runner associated with this context. To execute script in this context,
31 // please use the appropriate API on Runner.
abarth@chromium.org0d72f002013-11-25 02:19:34[diff] [blame]32 Runner* runner() const { return runner_; }
abarth@chromium.org60531d52013-11-27 02:10:15[diff] [blame]33 void set_runner(Runner* runner) { runner_ = runner; }
abarth@chromium.org0d72f002013-11-25 02:19:34[diff] [blame]34
abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]35 private:
abarth@chromium.org0d72f002013-11-25 02:19:34[diff] [blame]36 Runner* runner_;
abarth@chromium.org97f21ca2013-11-17 17:46:07[diff] [blame]37
38 DISALLOW_COPY_AND_ASSIGN(PerContextData);
39};
40
41} // namespace gin
42
43#endif // GIN_PER_CONTEXT_DATA_H_