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 13 namespace gin { 14 15 class ContextHolder; 16 class 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. 23 class 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
