//
// DOMImplementation.cpp
//
// $Id: //poco/Main/XML/src/DOMImplementation.cpp#5 $
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//


#include "DOM/DOMImplementation.h"
#include "DOM/DocumentType.h"
#include "DOM/Document.h"
#include "DOM/Element.h"
#include "Foundation/String.h"
#include "Foundation/SingletonHolder.h"


XML_BEGIN


const XMLString DOMImplementation::FEATURE_XML            = toXMLString("xml");
const XMLString DOMImplementation::FEATURE_CORE           = toXMLString("core");
const XMLString DOMImplementation::FEATURE_EVENTS         = toXMLString("events");
const XMLString DOMImplementation::FEATURE_MUTATIONEVENTS = toXMLString("mutationevents");
const XMLString DOMImplementation::FEATURE_TRAVERSAL      = toXMLString("traversal");


DOMImplementation::DOMImplementation()
{
}


DOMImplementation::~DOMImplementation()
{
}


bool DOMImplementation::hasFeature(const XMLString& feature, const XMLString& version) const
{
	XMLString lcFeature = Foundation::toLower(feature);
	return lcFeature == FEATURE_XML && version == "1.0" ||
	       lcFeature == FEATURE_CORE && version == "2.0" ||
	       lcFeature == FEATURE_EVENTS && version == "2.0" ||
	       lcFeature == FEATURE_MUTATIONEVENTS && version == "2.0" ||
	       lcFeature == FEATURE_TRAVERSAL && version == "2.0";
}

		
DocumentType* DOMImplementation::createDocumentType(const XMLString& name, const XMLString& publicId, const XMLString& systemId) const
{
	return new DocumentType(0, name, publicId, systemId);
}


Document* DOMImplementation::createDocument(const XMLString& namespaceURI, const XMLString& qualifiedName, DocumentType* doctype) const
{
	Document* pDoc = new Document(doctype);
	if (namespaceURI.empty())
		pDoc->appendChild(pDoc->createElement(qualifiedName))->release();
	else
		pDoc->appendChild(pDoc->createElementNS(namespaceURI, qualifiedName))->release();
	return pDoc;
}


const DOMImplementation& DOMImplementation::instance()
{
	static Foundation::SingletonHolder<DOMImplementation> sh;
	return *sh.get();
}


XML_END