// 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 "core/fxcrt/fx_stream.h" #include "core/fxcrt/retain_ptr.h" enum FX_XMLNODETYPE { FX_XMLNODE_Instruction = 0, FX_XMLNODE_Element, FX_XMLNODE_Text, FX_XMLNODE_CharData, }; class CFX_XMLNode { public: 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* GetFirstChild() const { return first_child_.get(); } CFX_XMLNode* GetNextSibling() const { return next_sibling_.get(); } 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(); CFX_XMLNode* GetLastChildForTesting() const { return last_child_.Get(); } CFX_XMLNode* GetPrevSiblingForTesting() const { return prev_sibling_.Get(); } protected: WideString EncodeEntities(const WideString& value); private: // A node owns its first child and it owns its next sibling. The rest // are unowned pointers. UnownedPtr<CFX_XMLNode> parent_; UnownedPtr<CFX_XMLNode> last_child_; UnownedPtr<CFX_XMLNode> prev_sibling_; std::unique_ptr<CFX_XMLNode> first_child_; std::unique_ptr<CFX_XMLNode> next_sibling_; }; #endif // CORE_FXCRT_XML_CFX_XMLNODE_H_