text: // Copyright 2014 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 FPDFSDK_JAVASCRIPT_CJS_RUNTIME_H_
  #define FPDFSDK_JAVASCRIPT_CJS_RUNTIME_H_
  
  #include <map>
  #include <memory>
  #include <set>
  #include <utility>
  #include <vector>
  
  #include "core/fxcrt/cfx_observable.h"
  #include "core/fxcrt/fx_basic.h"
  #include "fpdfsdk/javascript/JS_EventHandler.h"
  #include "fpdfsdk/javascript/ijs_runtime.h"
  #include "fxjs/fxjs_v8.h"
  
  class CJS_Context;
  
  class CJS_Runtime : public IJS_Runtime,
                      public CFXJS_Engine,
                      public CFX_Observable<CJS_Runtime> {
   public:
    using FieldEvent = std::pair<CFX_WideString, JS_EVENT_T>;
  
    static CJS_Runtime* FromContext(const IJS_Context* cc);
    static CJS_Runtime* CurrentRuntimeFromIsolate(v8::Isolate* pIsolate);
  
    explicit CJS_Runtime(CPDFSDK_FormFillEnvironment* pFormFillEnv);
    ~CJS_Runtime() override;
  
    // IJS_Runtime
    IJS_Context* NewContext() override;
    void ReleaseContext(IJS_Context* pContext) override;
    IJS_Context* GetCurrentContext() override;
  
    CPDFSDK_FormFillEnvironment* GetFormFillEnv() const override;
  
    int ExecuteScript(const CFX_WideString& script,
                      CFX_WideString* info) override;
  
    // Returns true if the event isn't already found in the set.
    bool AddEventToSet(const FieldEvent& event);
    void RemoveEventFromSet(const FieldEvent& event);
  
    void BeginBlock() { m_bBlocking = true; }
    void EndBlock() { m_bBlocking = false; }
    bool IsBlocking() const { return m_bBlocking; }
  
  #ifdef PDF_ENABLE_XFA
    bool GetValueByName(const CFX_ByteStringC& utf8Name,
                        CFXJSE_Value* pValue) override;
    bool SetValueByName(const CFX_ByteStringC& utf8Name,
                        CFXJSE_Value* pValue) override;
  #endif  // PDF_ENABLE_XFA
  
   private:
    void DefineJSObjects();
    void SetFormFillEnvToDocument();
  
    std::vector<std::unique_ptr<CJS_Context>> m_ContextArray;
    CPDFSDK_FormFillEnvironment* const m_pFormFillEnv;
    bool m_bBlocking;
    bool m_isolateManaged;
    std::set<FieldEvent> m_FieldEventSet;
  };
  
  #endif  // FPDFSDK_JAVASCRIPT_CJS_RUNTIME_H_
  