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 8#include "base/basictypes.h" 9#include "base/supports_user_data.h" 10#include "gin/gin_export.h" 11#include "v8/include/v8.h" 12 13namespace gin { 14 15class ContextHolder; 16class Runner; 17 18// There is one instance of PerContextData per v8::Context managed by Gin. This 19// class stores all the Gin-related data that varies per context. Arbitrary data 20// can be associated with this class by way of the SupportsUserData methods. 21// Instances of this class (and any associated user data) are destroyed before 22// the associated v8::Context. 23class GIN_EXPORT PerContextData : public base::SupportsUserData { 24 public: 25 PerContextData(ContextHolder* context_holder, 26 v8::Handle<v8::Context> context); 27 virtual ~PerContextData(); 28 29 // Can return NULL after the ContextHolder has detached from context. 30 static PerContextData* From(v8::Handle<v8::Context> context); 31 32 // The Runner associated with this context. To execute script in this context, 33 // please use the appropriate API on Runner. 34 Runner* runner() const { return runner_; } 35 void set_runner(Runner* runner) { runner_ = runner; } 36 37 ContextHolder* context_holder() { return context_holder_; } 38 39 private: 40 ContextHolder* context_holder_; 41 Runner* runner_; 42 43 DISALLOW_COPY_AND_ASSIGN(PerContextData); 44}; 45 46} // namespace gin 47 48#endif // GIN_PER_CONTEXT_DATA_H_ 49