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// Copyright 2017 PDFium Authors. All rights reserved.
// 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"
class CPDF_Dictionary;
class CPDF_Object;
class CPDF_StructElement;
class CPDF_StructTree;
class CPDF_StructKid {
public:
CPDF_StructKid();
CPDF_StructKid(const CPDF_StructKid& that);
~CPDF_StructKid();
enum { Invalid, Element, PageContent, StreamContent, Object } m_Type;
RetainPtr<CPDF_StructElement> m_pElement; // For Element.
UnownedPtr<const CPDF_Dictionary> m_pDict; // For Element.
uint32_t m_PageObjNum; // For PageContent, StreamContent, Object.
uint32_t m_RefObjNum; // For StreamContent, Object.
uint32_t m_ContentId; // For PageContent, StreamContent.
};
class CPDF_StructElement final : public Retainable {
public:
template <typename T, typename... Args>
friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
ByteString GetType() const { return m_Type; }
ByteString GetTitle() const { return m_Title; }
const CPDF_Dictionary* GetDict() const { return m_pDict.Get(); }
size_t CountKids() const;
CPDF_StructElement* GetKidIfElement(size_t index) const;
std::vector<CPDF_StructKid>* GetKids() { return &m_Kids; }
private:
CPDF_StructElement(CPDF_StructTree* pTree,
CPDF_StructElement* pParent,
const CPDF_Dictionary* pDict);
~CPDF_StructElement() override;
void LoadKids(const CPDF_Dictionary* pDict);
void LoadKid(uint32_t PageObjNum,
const CPDF_Object* pObj,
CPDF_StructKid* pKid);
UnownedPtr<CPDF_StructTree> const m_pTree;
UnownedPtr<CPDF_StructElement> const m_pParent;
UnownedPtr<const CPDF_Dictionary> const m_pDict;
ByteString m_Type;
ByteString m_Title;
std::vector<CPDF_StructKid> m_Kids;
};
#endif // CORE_FPDFDOC_CPDF_STRUCTELEMENT_H_
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