/*
 * 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 "ElemWhen.hpp"



#include <xercesc/sax/AttributeList.hpp>



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



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



XALAN_CPP_NAMESPACE_BEGIN



ElemWhen::ElemWhen(
            StylesheetConstructionContext&  constructionContext,
            Stylesheet&                     stylesheetTree,
            const AttributeListType&        atts,
            int                             lineNumber,
            int                             columnNumber) :
    ElemTemplateElement(constructionContext,
                        stylesheetTree,
                        lineNumber,
                        columnNumber,
                        StylesheetConstructionContext::ELEMNAME_WHEN),
    m_test(0)
{
    const unsigned int  nAttrs = atts.getLength();

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

        if (equals(aname, Constants::ATTRNAME_TEST))
        {
            m_test = constructionContext.createXPath(getLocator(), atts.getValue(i), *this);
        }
        else if(isAttrOK(
                    aname,
                    atts,
                    i,
                    constructionContext) == false && 
                processSpaceAttr(
                    Constants::ELEMNAME_WHEN_WITH_PREFIX_STRING.c_str(),
                    aname,
                    atts,
                    i,
                    constructionContext) == false)
        {
            error(
                constructionContext,
                XalanMessages::ElementHasIllegalAttribute_2Param,
                Constants::ELEMNAME_WHEN_WITH_PREFIX_STRING.c_str(),
                aname);
        }
    }

    if(0 == m_test)
    {
        error(
            constructionContext,
            XalanMessages::ElementMustHaveAttribute_2Param,
            Constants::ELEMNAME_WHEN_WITH_PREFIX_STRING,
            Constants::ATTRNAME_TEST);
    }
}



const XalanDOMString&
ElemWhen::getElementName() const
{
    return Constants::ELEMNAME_WHEN_WITH_PREFIX_STRING;
}


#if !defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION)
const ElemTemplateElement*
ElemWhen::startElement(StylesheetExecutionContext&  executionContext) const
{
    ElemTemplateElement::startElement(executionContext);
    
    return beginExecuteChildren(executionContext);
}



void
ElemWhen::endElement(StylesheetExecutionContext&    executionContext) const
{
     endExecuteChildren(executionContext);
}
#endif



#if defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION)
void
ElemWhen::execute(StylesheetExecutionContext&   executionContext) const
{
    ElemTemplateElement::execute(executionContext);

    executeChildren(executionContext);
}
#endif



const XPath*
ElemWhen::getXPath(unsigned int index) const
{
    return index == 0 ? m_test : 0;
}



XALAN_CPP_NAMESPACE_END
