text: // Copyright 2016 PDFium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
  
  #ifndef FXJS_CFXJSE_CONTEXT_H_
  #define FXJS_CFXJSE_CONTEXT_H_
  
  #include <memory>
  #include <vector>
  
  #include "core/fxcrt/fx_basic.h"
  #include "fxjs/fxjse.h"
  #include "v8/include/v8.h"
  
  class CFXJSE_Class;
  class CFXJSE_Value;
  struct FXJSE_CLASS_DESCRIPTOR;
  
  class CFXJSE_Context {
   public:
    static std::unique_ptr<CFXJSE_Context> Create(
        v8::Isolate* pIsolate,
        const FXJSE_CLASS_DESCRIPTOR* pGlobalClass,
        CFXJSE_HostObject* pGlobalObject);
  
    explicit CFXJSE_Context(v8::Isolate* pIsolate);
    ~CFXJSE_Context();
  
    v8::Isolate* GetIsolate() const { return m_pIsolate; }
    v8::Local<v8::Context> GetContext();
    std::unique_ptr<CFXJSE_Value> GetGlobalObject();
    void AddClass(std::unique_ptr<CFXJSE_Class> pClass);
    CFXJSE_Class* GetClassByName(const CFX_ByteStringC& szName) const;
    void EnableCompatibleMode();
    bool ExecuteScript(const char* szScript,
                       CFXJSE_Value* lpRetValue,
                       CFXJSE_Value* lpNewThisObject = nullptr);
  
   protected:
    friend class CFXJSE_ScopeUtil_IsolateHandleContext;
  
    CFXJSE_Context();
    CFXJSE_Context(const CFXJSE_Context&);
    CFXJSE_Context& operator=(const CFXJSE_Context&);
  
    v8::Global<v8::Context> m_hContext;
    v8::Isolate* m_pIsolate;
    std::vector<std::unique_ptr<CFXJSE_Class>> m_rgClasses;
  };
  
  v8::Local<v8::Object> FXJSE_CreateReturnValue(v8::Isolate* pIsolate,
                                                v8::TryCatch& trycatch);
  
  v8::Local<v8::Object> FXJSE_GetGlobalObjectFromContext(
      const v8::Local<v8::Context>& hContext);
  
  void FXJSE_UpdateObjectBinding(v8::Local<v8::Object>& hObject,
                                 CFXJSE_HostObject* lpNewBinding = nullptr);
  
  CFXJSE_HostObject* FXJSE_RetrieveObjectBinding(
      const v8::Local<v8::Object>& hJSObject,
      CFXJSE_Class* lpClass = nullptr);
  
  #endif  // FXJS_CFXJSE_CONTEXT_H_
  