/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "XercesWrapperNavigator.hpp"



#include <xalanc/XalanDOM/XalanNode.hpp>
#include <xalanc/XalanDOM/XalanElement.hpp>



#include "XercesAttrWrapper.hpp"
#include "XercesDocumentWrapper.hpp"
#include "XercesTextWrapper.hpp"
#include "XercesDOMWrapperException.hpp"



XALAN_CPP_NAMESPACE_BEGIN



const XalanDOMString	XercesWrapperNavigator::s_emptyString(XalanMemMgrs::getDummyMemMgr());



XercesWrapperNavigator::XercesWrapperNavigator(
			XercesDocumentWrapper*	theOwnerDocument) :
	m_ownerDocument(theOwnerDocument),
	m_parentNode(0),
	m_previousSibling(0),
	m_nextSibling(0),
	m_firstChild(0),
	m_lastChild(0),
	m_index(0)
{
	assert(theOwnerDocument != 0);
}



XercesWrapperNavigator::XercesWrapperNavigator(const XercesWrapperNavigator&	theSource) :
	m_ownerDocument(theSource.m_ownerDocument),
	m_parentNode(theSource.m_parentNode),
	m_previousSibling(theSource.m_previousSibling),
	m_nextSibling(theSource.m_nextSibling),
	m_firstChild(theSource.m_firstChild),
	m_lastChild(theSource.m_lastChild),
	m_index(theSource.m_index)
{
}



XercesWrapperNavigator::~XercesWrapperNavigator()
{
}



XalanNode*
XercesWrapperNavigator::mapNode(const DOMNodeType*	theXercesNode) const
{
	return m_ownerDocument->mapNode(theXercesNode);
}



XalanAttr*
XercesWrapperNavigator::mapNode(const DOMAttrType*	theXercesNode) const
{
	return m_ownerDocument->mapNode(theXercesNode);
}



const DOMNodeType*
XercesWrapperNavigator::mapNode(XalanNode*	theXalanNode) const
{
	return m_ownerDocument->mapNode(theXalanNode);
}



XalanNode*
XercesWrapperNavigator::getParentNode(const DOMNodeType*	theXercesNode) const
{
	if (m_parentNode == 0)
	{
		return m_ownerDocument->mapNode(theXercesNode->getParentNode());
	}
	else
	{
		return m_parentNode;
	}
}



XalanNode*
XercesWrapperNavigator::getPreviousSibling(const DOMNodeType*	theXercesNode) const
{
	if (m_previousSibling == 0)
	{
		return m_ownerDocument->mapNode(theXercesNode->getPreviousSibling());
	}
	else
	{
		return m_previousSibling;
	}
}



XalanNode*
XercesWrapperNavigator::getNextSibling(const DOMNodeType*	theXercesNode) const
{
	if (m_nextSibling == 0)
	{
		return m_ownerDocument->mapNode(theXercesNode->getNextSibling());
	}
	else
	{
		return m_nextSibling;
	}
}



XalanNode*
XercesWrapperNavigator::getFirstChild(const DOMNodeType*	theXercesNode) const
{
	if (m_firstChild == 0)
	{
		return m_ownerDocument->mapNode(theXercesNode->getFirstChild());
	}
	else
	{
		return m_firstChild;
	}
}



XalanNode*
XercesWrapperNavigator::getLastChild(const DOMNodeType*		theXercesNode) const
{
	if (m_lastChild == 0)
	{
		return m_ownerDocument->mapNode(theXercesNode->getLastChild());
	}
	else
	{
		return m_lastChild;
	}
}



XalanElement*
XercesWrapperNavigator::getOwnerElement(const DOMAttrType*	theXercesAttr) const
{
	assert(theXercesAttr != 0);

	if (m_parentNode != 0)
	{
		assert(m_parentNode->getNodeType() == XalanNode::ELEMENT_NODE);

#if defined(XALAN_OLD_STYLE_CASTS)
		return (XalanElement*)m_parentNode;
#else
		return static_cast<XalanElement*>(m_parentNode);
#endif
	}
	else
	{
		return m_ownerDocument->mapNode(theXercesAttr->getOwnerElement());
	}
}



const XalanDOMString&
XercesWrapperNavigator::getPooledString(const XMLCh*	theString) const
{
	if (theString == 0)
	{
		return s_emptyString;
	}
	else
	{
		return m_ownerDocument->getPooledString(theString, XalanDOMString::length(theString));
	}
}



XALAN_CPP_NAMESPACE_END
