/*
 * XMLTreeWalker.h 
 * Copyright (c) 2011 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */


// SOL9
// 2009/04/23
// 2011/01/28 Modified to use XMLDOMDocument

#pragma once

#include <sol/xml/XMLDOMDocument.h>


namespace SOL {

class XMLTreeWalker :public XMLDOMDocument {

public:
    /**
     * Constructor
     */
    XMLTreeWalker()
    {    
    }

public:
    /**
     */
    ~XMLTreeWalker() 
    {
    }

public:
    /**
     * Traverse each tree node of XMLDOM node
     */
    virtual void walk() 
    {
        MSXML2::IXMLDOMElementPtr root = getDocumentElement();
        displayChildren(root, 0);
    }


private:
    void displayChildren(MSXML2::IXMLDOMNodePtr pNode, int n)
    {
         // Display the current node's attributes

         displayChild(pNode, n);

         // Walk all children
        MSXML2::IXMLDOMNodePtr pChild = pNode->firstChild;

        for (pChild; NULL != pChild; pChild = pChild->nextSibling) {
              displayChildren(pChild, n+1);
         }

        if ( pNode->nodeType == MSXML2::NODE_ELEMENT) {
            _bstr_t name = pNode->GetnodeName();
            indent(n);
            _tprintf(_T("</%s>\n"), (const TCHAR*)name);
        }
        pChild = NULL;
    }

private:
    void indent(int n) 
    {
        for (int i = 0; i<n; i++) {
            _tprintf(_T(" "));
        }
    }

private:
    void displayChild(MSXML2::IXMLDOMNodePtr pChild, int n)
    {
        if (pChild) {
            _bstr_t name = pChild->GetnodeName();
            indent(n);

             if (pChild->nodeType == MSXML2::NODE_TEXT) {
                _tprintf(_T("%s\n"), (const TCHAR*)pChild->text);

            } else if (pChild->nodeType == MSXML2::NODE_ELEMENT) {    
                _tprintf(_T("<%s"), (const TCHAR*)name);
                displayAttributes(pChild);            
                _tprintf(_T(">\n"));
            }  else {

            }
        }
    }


private:
    void displayAttributes(MSXML2::IXMLDOMNodePtr pNode)
    {
        MSXML2::IXMLDOMNamedNodeMapPtr map = pNode->Getattributes();
        if (map) {
            for (int n = 0; n<map->Getlength(); n++) {
                MSXML2::IXMLDOMNodePtr attr = map->Getitem(n);
                _bstr_t name  = attr->GetnodeName();
                _bstr_t value = attr->GetnodeValue();
                _tprintf(_T(" %s=\"%s\""), (const TCHAR*)name, (const TCHAR*)value);
            }
            map = NULL;
        }
    }
/*
enum tagDOMNodeType
{
    NODE_INVALID = 0,
    NODE_ELEMENT = 1,
    NODE_ATTRIBUTE = 2,
    NODE_TEXT = 3,
    NODE_CDATA_SECTION = 4,
    NODE_ENTITY_REFERENCE = 5,
    NODE_ENTITY = 6,
    NODE_PROCESSING_INSTRUCTION = 7,
    NODE_COMMENT = 8,
    NODE_DOCUMENT = 9,
    NODE_DOCUMENT_TYPE = 10,
    NODE_DOCUMENT_FRAGMENT = 11,
    NODE_NOTATION = 12
};
*/
};

}