/*
 * 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 "ElemApplyImport.hpp"



#include <xercesc/sax/AttributeList.hpp>



#include <xalanc/XalanDOM/XalanDOMException.hpp>



#include <xalanc/PlatformSupport/DOMStringHelper.hpp>
#include <xalanc/PlatformSupport/XalanMessageLoader.hpp>



#include <xalanc/DOMSupport/DOMServices.hpp>



#include "Constants.hpp"
#include "StylesheetConstructionContext.hpp"
#include "StylesheetExecutionContext.hpp"



XALAN_CPP_NAMESPACE_BEGIN



typedef XPathConstructionContext::GetCachedString   GetCachedString;



ElemApplyImport::ElemApplyImport(
            StylesheetConstructionContext&  constructionContext,
            Stylesheet&                     stylesheetTree,
            const AttributeListType&        atts,
            int                             lineNumber, 
            int                             columnNumber) :
        ElemTemplateElement(constructionContext,
                            stylesheetTree,
                            lineNumber,
                            columnNumber,
                            StylesheetConstructionContext::ELEMNAME_APPLY_IMPORTS)
{
    const unsigned int  nAttrs = atts.getLength();

    for(unsigned int i = 0; i < nAttrs; i++)
    {
        const XalanDOMChar* const   aname = atts.getName(i);

        if(isAttrOK(
                aname,
                atts,
                i,
                constructionContext) == false)
        {
            error(
                constructionContext,
                XalanMessages::ElementHasIllegalAttribute_2Param,
                Constants::ELEMNAME_APPLY_IMPORTS_WITH_PREFIX_STRING.c_str(),
                aname);
        }
    }
}



const XalanDOMString&
ElemApplyImport::getElementName() const
{
    return Constants::ELEMNAME_APPLY_IMPORTS_WITH_PREFIX_STRING;
}



#if !defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION)
const ElemTemplateElement*
ElemApplyImport::startElement(StylesheetExecutionContext&   executionContext) const
{
    if (executionContext.getCurrentTemplate() == 0)
    {
        error(
            executionContext,
            XalanMessages::NoCurrentTemplate);
    }

    ElemTemplateElement::startElement(executionContext);

    executionContext.pushInvoker(this);

    executionContext.pushContextMarker();
    
    return findTemplateToTransformChild(    
            executionContext,
            *this,
            0,
            executionContext.getCurrentNode());
}



void
ElemApplyImport::endElement(StylesheetExecutionContext&     executionContext) const
{
    executionContext.popContextMarker();

    executionContext.popInvoker();

    ElemTemplateElement::endElement(executionContext);
}



const ElemTemplateElement*
ElemApplyImport::getNextChildElemToExecute(
        StylesheetExecutionContext&     /* execution Context */,
        const ElemTemplateElement*      /* currentElem */) const
{
    return 0;
}
#endif



#if defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION)
void
ElemApplyImport::execute(StylesheetExecutionContext&    executionContext) const
{
    XalanNode* const    sourceNode = executionContext.getCurrentNode();
    assert(sourceNode != 0);

    if (executionContext.getCurrentTemplate() == 0)
    {
        XPathExecutionContext::GetCachedString  theResult(executionContext);

        error(
            executionContext,
            XalanMessages::NoCurrentTemplate);
    }

    ElemTemplateElement::execute(executionContext);

    const StylesheetExecutionContext::PushAndPopContextMarker   thePushPop(executionContext);

    transformChild(
            executionContext,
            *this,
            0,
            sourceNode);
}
#endif



ElemTemplateElement*
ElemApplyImport::appendChildElem(ElemTemplateElement*   /* newChild */)
{
    throw XalanDOMException(XalanDOMException::HIERARCHY_REQUEST_ERR);

    return 0;
}



XALAN_CPP_NAMESPACE_END
