//
// AttrMap.cpp
//
// $Id: //poco/Main/XML/src/AttrMap.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
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#include "DOM/AttrMap.h"
#include "DOM/Attr.h"
#include "DOM/Element.h"
#include "DOM/Document.h"
#include "DOM/DOMException.h"


XML_BEGIN


AttrMap::AttrMap(Element* pElement):
	_pElement(pElement)
{
	poco_check_ptr (pElement);
	
	_pElement->duplicate();
}


AttrMap::~AttrMap()
{
	_pElement->release();
}


Node* AttrMap::getNamedItem(const XMLString& name) const
{
	return _pElement->getAttributeNode(name);
}


Node* AttrMap::setNamedItem(Node* arg)
{
	poco_check_ptr (arg);

	if (arg->nodeType() != Node::ATTRIBUTE_NODE)
		throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
		
	return _pElement->setAttributeNode(static_cast<Attr*>(arg));
}


Node* AttrMap::removeNamedItem(const XMLString& name)
{
	Attr* pAttr = _pElement->getAttributeNode(name);
	if (pAttr)
		return _pElement->removeAttributeNode(pAttr);
	else
		return 0;
}


Node* AttrMap::item(unsigned long index) const
{
	AbstractNode* pAttr = _pElement->_pFirstAttr;
	while (index-- > 0 && pAttr) pAttr = static_cast<AbstractNode*>(pAttr->nextSibling());
	return pAttr;
}


unsigned long AttrMap::length() const
{
	unsigned long result = 0;
	AbstractNode* pAttr = _pElement->_pFirstAttr;
	while (pAttr) 
	{
		pAttr = static_cast<AbstractNode*>(pAttr->nextSibling());
		++result;
	}
	return result;
}


Node* AttrMap::getNamedItemNS(const XMLString& namespaceURI, const XMLString& localName) const
{
	return _pElement->getAttributeNodeNS(namespaceURI, localName);
}


Node* AttrMap::setNamedItemNS(Node* arg)
{
	poco_check_ptr (arg);

	if (arg->nodeType() != Node::ATTRIBUTE_NODE)
		throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);

	return _pElement->setAttributeNodeNS(static_cast<Attr*>(arg));
}


Node* AttrMap::removeNamedItemNS(const XMLString& namespaceURI, const XMLString& localName)
{
	Attr* pAttr = _pElement->getAttributeNodeNS(namespaceURI, localName);
	if (pAttr)
		return _pElement->removeAttributeNode(pAttr);
	else
		return 0;
}


void AttrMap::autoRelease()
{
	_pElement->ownerDocument()->autoReleasePool().add(this);
}


XML_END