//
// AbstractNode.h
//
// Library: XML
// Package: DOM
// Module:  DOM
//
// Definition of the AbstractNode class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier:	BSL-1.0
//


#ifndef DOM_AbstractNode_INCLUDED
#define DOM_AbstractNode_INCLUDED


#include "Poco/DOM/MutationEvent.h"
#include "Poco/DOM/Node.h"
#include "Poco/XML/XML.h"
#include "Poco/XML/XMLString.h"


namespace Poco
{
namespace XML
{


    class AbstractContainerNode;
    class Attr;
    class EventDispatcher;


    class XML_API AbstractNode : public Node
    /// AbstractNode provides a basic implementation
    /// of the Node interface for all types of nodes
    /// that do not contain other nodes.
    {
    public:
        // Node
        const XMLString & nodeName() const;
        const XMLString & getNodeValue() const;
        void setNodeValue(const XMLString & value);
        Node * parentNode() const;
        NodeList * childNodes() const;
        Node * firstChild() const;
        Node * lastChild() const;
        Node * previousSibling() const;
        Node * nextSibling() const;
        NamedNodeMap * attributes() const;
        Document * ownerDocument() const;
        Node * insertBefore(Node * newChild, Node * refChild);
        Node * replaceChild(Node * newChild, Node * oldChild);
        Node * removeChild(Node * oldChild);
        Node * appendChild(Node * newChild);
        bool hasChildNodes() const;
        Node * cloneNode(bool deep) const;
        void normalize();
        bool isSupported(const XMLString & feature, const XMLString & version) const;
        const XMLString & namespaceURI() const;
        XMLString prefix() const;
        const XMLString & localName() const;
        bool hasAttributes() const;

        // EventTarget
        void addEventListener(const XMLString & type, EventListener * listener, bool useCapture);
        void removeEventListener(const XMLString & type, EventListener * listener, bool useCapture);
        bool dispatchEvent(Event * evt);

        // Extensions
        XMLString innerText() const;
        Node * getNodeByPath(const XMLString & path) const;
        Node * getNodeByPathNS(const XMLString & path, const NSMap & nsMap) const;

        virtual void autoRelease();

    protected:
        AbstractNode(Document * pOwnerDocument);
        AbstractNode(Document * pOwnerDocument, const AbstractNode & node);
        ~AbstractNode();

        virtual Node * copyNode(bool deep, Document * pOwnerDocument) const = 0;

        virtual bool events() const;
        virtual bool eventsSuspended() const;
        void captureEvent(Event * evt);
        void bubbleEvent(Event * evt);
        void dispatchSubtreeModified();
        void dispatchNodeInserted();
        void dispatchNodeRemoved();
        virtual void dispatchNodeRemovedFromDocument();
        virtual void dispatchNodeInsertedIntoDocument();
        void dispatchAttrModified(
            Attr * pAttr, MutationEvent::AttrChangeType changeType, const XMLString & prevValue, const XMLString & newValue);
        void dispatchCharacterDataModified(const XMLString & prevValue, const XMLString & newValue);
        void setOwnerDocument(Document * pOwnerDocument);

        static const XMLString EMPTY_STRING;

    private:
        AbstractNode();

        AbstractContainerNode * _pParent;
        AbstractNode * _pNext;
        Document * _pOwner;
        EventDispatcher * _pEventDispatcher;

        static const XMLString NODE_NAME;

        friend class AbstractContainerNode;
        friend class Document;
        friend class DocumentFragment;
        friend class Element;
        friend class Attr;
        friend class CharacterData;
        friend class DOMBuilder;
        friend class NodeAppender;
    };


}
} // namespace Poco::XML


#endif // DOM_AbstractNode_INCLUDED