| // Copyright 2017 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 CORE_FPDFDOC_CPDF_STRUCTELEMENT_H_ |
| #define CORE_FPDFDOC_CPDF_STRUCTELEMENT_H_ |
| |
| #include <vector> |
| |
| #include "core/fxcrt/fx_string.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| |
| class CPDF_Dictionary; |
| class CPDF_Object; |
| class CPDF_StructTree; |
| |
| class CPDF_StructElement final : public Retainable { |
| public: |
| CONSTRUCT_VIA_MAKE_RETAIN; |
| |
| ByteString GetType() const { return m_Type; } |
| ByteString GetObjType() const; |
| WideString GetAltText() const; |
| WideString GetActualText() const; |
| WideString GetTitle() const; |
| absl::optional<WideString> GetID() const; |
| absl::optional<WideString> GetLang() const; |
| RetainPtr<const CPDF_Object> GetA() const; |
| RetainPtr<const CPDF_Object> GetK() const; |
| |
| size_t CountKids() const; |
| CPDF_StructElement* GetKidIfElement(size_t index) const; |
| bool UpdateKidIfElement(const CPDF_Dictionary* pDict, |
| CPDF_StructElement* pElement); |
| |
| CPDF_StructElement* GetParent() const { return m_pParentElement; } |
| void SetParent(CPDF_StructElement* pParentElement) { |
| m_pParentElement = pParentElement; |
| } |
| |
| private: |
| struct Kid { |
| enum Type { kInvalid, kElement, kPageContent, kStreamContent, kObject }; |
| |
| Kid(); |
| Kid(const Kid& that); |
| ~Kid(); |
| |
| Type m_Type = kInvalid; |
| uint32_t m_PageObjNum = 0; // For {PageContent, StreamContent, Object}. |
| uint32_t m_RefObjNum = 0; // For {StreamContent, Object} types. |
| uint32_t m_ContentId = 0; // For {PageContent, StreamContent} types. |
| RetainPtr<CPDF_StructElement> m_pElement; // For Element type. |
| RetainPtr<const CPDF_Dictionary> m_pDict; // For Element type. |
| }; |
| |
| CPDF_StructElement(const CPDF_StructTree* pTree, |
| RetainPtr<const CPDF_Dictionary> pDict); |
| ~CPDF_StructElement() override; |
| |
| void LoadKids(RetainPtr<const CPDF_Dictionary> pDict); |
| void LoadKid(uint32_t PageObjNum, |
| RetainPtr<const CPDF_Object> pKidObj, |
| Kid* pKid); |
| |
| UnownedPtr<const CPDF_StructTree> const m_pTree; |
| RetainPtr<const CPDF_Dictionary> const m_pDict; |
| UnownedPtr<CPDF_StructElement> m_pParentElement; |
| const ByteString m_Type; |
| std::vector<Kid> m_Kids; |
| }; |
| |
| #endif // CORE_FPDFDOC_CPDF_STRUCTELEMENT_H_ |