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| 1 // Copyright 2016 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 CORE_INCLUDE_FPDFAPI_CPDF_REFERENCE_H_ |
| 8 #define CORE_INCLUDE_FPDFAPI_CPDF_REFERENCE_H_ |
| 9 |
| 10 #include "core/include/fpdfapi/cpdf_object.h" |
| 11 |
| 12 class CPDF_IndirectObjectHolder; |
| 13 |
| 14 class CPDF_Reference : public CPDF_Object { |
| 15 public: |
| 16 CPDF_Reference(CPDF_IndirectObjectHolder* pDoc, int objnum); |
| 17 |
| 18 // CPDF_Object. |
| 19 Type GetType() const override; |
| 20 CPDF_Object* Clone(FX_BOOL bDirect = FALSE) const override; |
| 21 CPDF_Object* GetDirect() const override; |
| 22 CFX_ByteString GetString() const override; |
| 23 CFX_ByteStringC GetConstString() const override; |
| 24 FX_FLOAT GetNumber() const override; |
| 25 int GetInteger() const override; |
| 26 CPDF_Dictionary* GetDict() const override; |
| 27 |
| 28 // TODO(weili): check whether GetUnicodeText() and GetArray() are needed. |
| 29 bool IsReference() const override; |
| 30 CPDF_Reference* AsReference() override; |
| 31 const CPDF_Reference* AsReference() const override; |
| 32 |
| 33 CPDF_IndirectObjectHolder* GetObjList() const { return m_pObjList; } |
| 34 FX_DWORD GetRefObjNum() const { return m_RefObjNum; } |
| 35 |
| 36 void SetRef(CPDF_IndirectObjectHolder* pDoc, FX_DWORD objnum); |
| 37 |
| 38 protected: |
| 39 ~CPDF_Reference() override; |
| 40 CPDF_Object* SafeGetDirect() const { |
| 41 CPDF_Object* obj = GetDirect(); |
| 42 if (!obj || obj->IsReference()) |
| 43 return nullptr; |
| 44 return obj; |
| 45 } |
| 46 |
| 47 CPDF_IndirectObjectHolder* m_pObjList; |
| 48 FX_DWORD m_RefObjNum; |
| 49 }; |
| 50 |
| 51 #endif // CORE_INCLUDE_FPDFAPI_CPDF_REFERENCE_H_ |
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