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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_FXCRT_XML_CFX_XMLNODE_H_
#define CORE_FXCRT_XML_CFX_XMLNODE_H_
#include <memory>
#include <vector>
#include "core/fxcrt/fx_stream.h"
#include "core/fxcrt/retain_ptr.h"
enum FX_XMLNODETYPE {
FX_XMLNODE_Unknown = 0,
FX_XMLNODE_Instruction,
FX_XMLNODE_Element,
FX_XMLNODE_Text,
FX_XMLNODE_CharData,
};
class CFX_XMLNode {
public:
using const_iterator =
std::vector<std::unique_ptr<CFX_XMLNode>>::const_iterator;
CFX_XMLNode();
virtual ~CFX_XMLNode();
virtual FX_XMLNODETYPE GetType() const = 0;
virtual std::unique_ptr<CFX_XMLNode> Clone() = 0;
virtual void Save(const RetainPtr<IFX_SeekableWriteStream>& pXMLStream) = 0;
CFX_XMLNode* GetRoot();
CFX_XMLNode* GetParent() const { return parent_.Get(); }
CFX_XMLNode* GetNextSibling() const { return next_sibling_; }
bool HasChildren() const { return !children_.empty(); }
const_iterator begin() const { return children_.begin(); }
const_iterator end() const { return children_.end(); }
void AppendChild(std::unique_ptr<CFX_XMLNode> pNode);
void InsertChildNode(std::unique_ptr<CFX_XMLNode> pNode, int32_t index);
void RemoveChildNode(CFX_XMLNode* pNode);
void DeleteChildren();
// Note |root| must not have any children.
void MoveChildrenTo(CFX_XMLNode* root);
protected:
WideString EncodeEntities(const WideString& value);
private:
UnownedPtr<CFX_XMLNode> parent_;
// The next_sibling is owned by the vector. We don't use an UnownedPtr
// because we don't know the destruction order of the vector.
CFX_XMLNode* next_sibling_;
std::vector<std::unique_ptr<CFX_XMLNode>> children_;
};
#endif // CORE_FXCRT_XML_CFX_XMLNODE_H_
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