cjs_runtime.h

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// Copyright 2014 The PDFium Authors
// 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_CJS_RUNTIME_H_
#define FXJS_CJS_RUNTIME_H_
 
#include <memory>
#include <set>
#include <utility>
#include <vector>
 
#include "core/fxcrt/cfx_timer.h"
#include "core/fxcrt/observed_ptr.h"
#include "fxjs/cfxjs_engine.h"
#include "fxjs/cjs_event_context.h"
#include "fxjs/ijs_runtime.h"
 
class CPDFSDK_FormFillEnvironment;
 
class CJS_Runtime final : public IJS_Runtime,
                          public CFXJS_Engine,
                          public Observable {
 public:
  using FieldEvent = std::pair<WideString, CJS_EventContext::Kind>;
 
  explicit CJS_Runtime(CPDFSDK_FormFillEnvironment* pFormFillEnv);
  ~CJS_Runtime() override;
 
  // IJS_Runtime:
  CJS_Runtime* AsCJSRuntime() override;
  IJS_EventContext* NewEventContext() override;
  void ReleaseEventContext(IJS_EventContext* pContext) override;
  CPDFSDK_FormFillEnvironment* GetFormFillEnv() const override;
  absl::optional<IJS_Runtime::JS_Error> ExecuteScript(
      const WideString& script) override;
 
  CJS_EventContext* GetCurrentEventContext() const;
  CFX_Timer::HandlerIface* GetTimerHandler() const;
 
  // 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; }
 
  // Attempt to convert the |value| into a number. If successful the number
  // value will be returned, otherwise |value| is returned.
  v8::Local<v8::Value> MaybeCoerceToNumber(v8::Local<v8::Value> value);
 
  v8::Local<v8::Value> GetValueByNameFromGlobalObject(ByteStringView utf8Name);
  bool SetValueByNameInGlobalObject(ByteStringView utf8Name,
                                    v8::Local<v8::Value> pValue);
 
 private:
  void DefineJSObjects();
  void SetFormFillEnvToDocument();
 
  std::vector<std::unique_ptr<CJS_EventContext>> m_EventContextArray;
  ObservedPtr<CPDFSDK_FormFillEnvironment> m_pFormFillEnv;
  bool m_bBlocking = false;
  bool m_isolateManaged = false;
  std::set<FieldEvent> m_FieldEventSet;
};
 
#endif  // FXJS_CJS_RUNTIME_H_