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      1 // Copyright 2014 PDFium 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 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #ifndef FPDFSDK_SRC_JAVASCRIPT_JS_OBJECT_H_
      8 #define FPDFSDK_SRC_JAVASCRIPT_JS_OBJECT_H_
      9 
     10 #include <map>
     11 #include <memory>
     12 
     13 #include "JS_Runtime.h"
     14 #include "fpdfsdk/include/fsdk_define.h"  // For FX_UINT
     15 #include "fpdfsdk/include/jsapi/fxjs_v8.h"
     16 
     17 class CJS_Context;
     18 class CJS_Object;
     19 class CJS_Timer;
     20 class CPDFDoc_Environment;
     21 class CJS_EmbedObj {
     22  public:
     23   explicit CJS_EmbedObj(CJS_Object* pJSObject);
     24   virtual ~CJS_EmbedObj();
     25 
     26   virtual void TimerProc(CJS_Timer* pTimer) {}
     27 
     28   CJS_Object* GetJSObject() const { return m_pJSObject; }
     29 
     30   int MsgBox(CPDFDoc_Environment* pApp,
     31              const FX_WCHAR* swMsg,
     32              const FX_WCHAR* swTitle,
     33              FX_UINT nType,
     34              FX_UINT nIcon);
     35   void Alert(CJS_Context* pContext, const FX_WCHAR* swMsg);
     36 
     37  protected:
     38   CJS_Object* m_pJSObject;
     39 };
     40 
     41 class CJS_Object {
     42  public:
     43   explicit CJS_Object(v8::Local<v8::Object> pObject);
     44   virtual ~CJS_Object();
     45 
     46   void MakeWeak();
     47   void Dispose();
     48 
     49   virtual FX_BOOL IsType(const FX_CHAR* sClassName) { return TRUE; }
     50   virtual CFX_ByteString GetClassName() { return ""; }
     51 
     52   virtual void InitInstance(IJS_Runtime* pIRuntime) {}
     53   virtual void ExitInstance() {}
     54 
     55   v8::Local<v8::Object> ToV8Object() { return m_pV8Object.Get(m_pIsolate); }
     56 
     57   // Takes ownership of |pObj|.
     58   void SetEmbedObject(CJS_EmbedObj* pObj) { m_pEmbedObj.reset(pObj); }
     59   CJS_EmbedObj* GetEmbedObject() const { return m_pEmbedObj.get(); }
     60 
     61   static int MsgBox(CPDFDoc_Environment* pApp,
     62                     const FX_WCHAR* swMsg,
     63                     const FX_WCHAR* swTitle,
     64                     FX_UINT nType,
     65                     FX_UINT nIcon);
     66   static void Alert(CJS_Context* pContext, const FX_WCHAR* swMsg);
     67 
     68   v8::Isolate* GetIsolate() { return m_pIsolate; }
     69 
     70  protected:
     71   std::unique_ptr<CJS_EmbedObj> m_pEmbedObj;
     72   v8::Global<v8::Object> m_pV8Object;
     73   v8::Isolate* m_pIsolate;
     74 };
     75 
     76 class CJS_Timer : public CJS_Runtime::Observer {
     77  public:
     78   CJS_Timer(CJS_EmbedObj* pObj,
     79             CPDFDoc_Environment* pApp,
     80             CJS_Runtime* pRuntime,
     81             int nType,
     82             const CFX_WideString& script,
     83             FX_DWORD dwElapse,
     84             FX_DWORD dwTimeOut);
     85   ~CJS_Timer() override;
     86 
     87   void KillJSTimer();
     88 
     89   int GetType() const { return m_nType; }
     90   FX_DWORD GetTimeOut() const { return m_dwTimeOut; }
     91   CJS_Runtime* GetRuntime() const { return m_bValid ? m_pRuntime : nullptr; }
     92   CFX_WideString GetJScript() const { return m_swJScript; }
     93 
     94   static void TimerProc(int idEvent);
     95 
     96  private:
     97   using TimerMap = std::map<FX_UINT, CJS_Timer*>;
     98   static TimerMap* GetGlobalTimerMap();
     99 
    100   // CJS_Runtime::Observer
    101   void OnDestroyed() override;
    102 
    103   FX_DWORD m_nTimerID;
    104   CJS_EmbedObj* const m_pEmbedObj;
    105   bool m_bProcessing;
    106   bool m_bValid;
    107 
    108   // data
    109   const int m_nType;  // 0:Interval; 1:TimeOut
    110   const FX_DWORD m_dwTimeOut;
    111   const CFX_WideString m_swJScript;
    112   CJS_Runtime* const m_pRuntime;
    113   CPDFDoc_Environment* const m_pApp;
    114 };
    115 
    116 #endif  // FPDFSDK_SRC_JAVASCRIPT_JS_OBJECT_H_
    117