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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_GLOBALDATA_H_
      8 #define FPDFSDK_SRC_JAVASCRIPT_JS_GLOBALDATA_H_
      9 
     10 #include "core/include/fxcrt/fx_basic.h"
     11 
     12 #define JS_GLOBALDATA_TYPE_NUMBER 0
     13 #define JS_GLOBALDATA_TYPE_BOOLEAN 1
     14 #define JS_GLOBALDATA_TYPE_STRING 2
     15 #define JS_GLOBALDATA_TYPE_OBJECT 3
     16 #define JS_GLOBALDATA_TYPE_NULL 4
     17 
     18 class CJS_KeyValue;
     19 class CPDFDoc_Environment;
     20 
     21 class CJS_GlobalVariableArray {
     22  public:
     23   CJS_GlobalVariableArray();
     24   virtual ~CJS_GlobalVariableArray();
     25 
     26   void Add(CJS_KeyValue* p);
     27   int Count() const;
     28   CJS_KeyValue* GetAt(int index) const;
     29   void Copy(const CJS_GlobalVariableArray& array);
     30 
     31   void Empty();
     32 
     33  private:
     34   CFX_ArrayTemplate<CJS_KeyValue*> array;
     35 };
     36 
     37 class CJS_KeyValue {
     38  public:
     39   CJS_KeyValue() {}
     40   virtual ~CJS_KeyValue() {}
     41 
     42   CFX_ByteString sKey;
     43   int nType;  // 0:int 1:bool 2:string 3:obj
     44   double dData;
     45   bool bData;
     46   CFX_ByteString sData;
     47   CJS_GlobalVariableArray objData;
     48 };
     49 
     50 class CJS_GlobalData_Element {
     51  public:
     52   CJS_GlobalData_Element() {}
     53   virtual ~CJS_GlobalData_Element() {}
     54 
     55   CJS_KeyValue data;
     56   FX_BOOL bPersistent;
     57 };
     58 
     59 class CJS_GlobalData {
     60  public:
     61   static CJS_GlobalData* GetRetainedInstance(CPDFDoc_Environment* pApp);
     62   void Release();
     63 
     64   void SetGlobalVariableNumber(const FX_CHAR* propname, double dData);
     65   void SetGlobalVariableBoolean(const FX_CHAR* propname, bool bData);
     66   void SetGlobalVariableString(const FX_CHAR* propname,
     67                                const CFX_ByteString& sData);
     68   void SetGlobalVariableObject(const FX_CHAR* propname,
     69                                const CJS_GlobalVariableArray& array);
     70   void SetGlobalVariableNull(const FX_CHAR* propname);
     71 
     72   FX_BOOL SetGlobalVariablePersistent(const FX_CHAR* propname,
     73                                       FX_BOOL bPersistent);
     74   FX_BOOL DeleteGlobalVariable(const FX_CHAR* propname);
     75 
     76   int32_t GetSize() const;
     77   CJS_GlobalData_Element* GetAt(int index) const;
     78 
     79  private:
     80   static CJS_GlobalData* g_Instance;
     81 
     82   CJS_GlobalData();
     83   ~CJS_GlobalData();
     84 
     85   void LoadGlobalPersistentVariables();
     86   void SaveGlobalPersisitentVariables();
     87 
     88   CJS_GlobalData_Element* GetGlobalVariable(const FX_CHAR* propname);
     89   int FindGlobalVariable(const FX_CHAR* propname);
     90 
     91   void LoadFileBuffer(const FX_WCHAR* sFilePath,
     92                       uint8_t*& pBuffer,
     93                       int32_t& nLength);
     94   void WriteFileBuffer(const FX_WCHAR* sFilePath,
     95                        const FX_CHAR* pBuffer,
     96                        int32_t nLength);
     97   void MakeByteString(const CFX_ByteString& name,
     98                       CJS_KeyValue* pData,
     99                       CFX_BinaryBuf& sData);
    100 
    101   size_t m_RefCount;
    102   CFX_ArrayTemplate<CJS_GlobalData_Element*> m_arrayGlobalData;
    103   CFX_WideString m_sFilePath;
    104 };
    105 
    106 #endif  // FPDFSDK_SRC_JAVASCRIPT_JS_GLOBALDATA_H_
    107