/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sc.hxx"



// INCLUDE ---------------------------------------------------------------
#include "XMLTextPContext.hxx"
#include "xmlimprt.hxx"
#include "xmlcelli.hxx"
#include <xmloff/xmlnmspe.hxx>
#include <xmloff/xmltoken.hxx>
#include <xmloff/nmspmap.hxx>
#include <tools/debug.hxx>
#include <com/sun/star/text/XTextCursor.hpp>

using namespace com::sun::star;
using namespace xmloff::token;

class ScXMLTextTContext : public SvXMLImportContext
{
	const ScXMLImport& GetScImport() const { return (const ScXMLImport&)GetImport(); }
	ScXMLImport& GetScImport() { return (ScXMLImport&)GetImport(); }
public:
	ScXMLTextTContext( ScXMLImport& rImport, sal_uInt16 nPrfx,
						const ::rtl::OUString& rLName,
						const ::com::sun::star::uno::Reference<
										::com::sun::star::xml::sax::XAttributeList>& xAttrList,
						ScXMLTextPContext* pTextPContext);

	virtual ~ScXMLTextTContext();
};


ScXMLTextTContext::ScXMLTextTContext( ScXMLImport& rImport,
									  sal_uInt16 nPrfx,
									  const ::rtl::OUString& rLName,
									  const ::com::sun::star::uno::Reference<
									  ::com::sun::star::xml::sax::XAttributeList>& xAttrList,
									  ScXMLTextPContext* pTextPContext) :
	SvXMLImportContext( rImport, nPrfx, rLName )
{
	if (pTextPContext)
	{
		sal_Int16 nAttrCount(xAttrList.is() ? xAttrList->getLength() : 0);
		rtl::OUString aLocalName;
		sal_Int32 nCount(1);
		for( sal_Int16 i=0; i < nAttrCount; ++i )
		{
			sal_uInt16 nPrefix(GetScImport().GetNamespaceMap().GetKeyByAttrName(
												xAttrList->getNameByIndex( i ), &aLocalName ));
    		const rtl::OUString& sValue(xAttrList->getValueByIndex( i ));

			if ((nPrefix == XML_NAMESPACE_TEXT) && IsXMLToken(aLocalName, XML_C))
				nCount = sValue.toInt32();
		}
		pTextPContext->AddSpaces(nCount);
	}
}

ScXMLTextTContext::~ScXMLTextTContext()
{
}

//------------------------------------------------------------------

ScXMLTextPContext::ScXMLTextPContext( ScXMLImport& rImport,
									  sal_uInt16 nPrfx,
									  const ::rtl::OUString& rLName,
									  const ::com::sun::star::uno::Reference<
									  ::com::sun::star::xml::sax::XAttributeList>& xTempAttrList,
									  ScXMLTableRowCellContext* pTempCellContext) :
	SvXMLImportContext( rImport, nPrfx, rLName ),
	xAttrList(xTempAttrList),
	pTextPContext(NULL),
	pCellContext(pTempCellContext),
	sLName(rLName),
    sSimpleContent(),
    pContentBuffer(NULL),
	nPrefix(nPrfx),
	bIsOwn(sal_True)
{
	// here are no attributes
}

ScXMLTextPContext::~ScXMLTextPContext()
{
	if (pTextPContext)
		delete pTextPContext;
    if (pContentBuffer)
        delete pContentBuffer;
}

void ScXMLTextPContext::AddSpaces(sal_Int32 nSpaceCount)
{
    // use pContentBuffer
    if ( !pContentBuffer )
        pContentBuffer = new rtl::OUStringBuffer( sSimpleContent );

	sal_Char* pChars = new sal_Char[nSpaceCount];
	memset(pChars, ' ', nSpaceCount);
    pContentBuffer->appendAscii(pChars, nSpaceCount);
	delete[] pChars;
}

SvXMLImportContext *ScXMLTextPContext::CreateChildContext( sal_uInt16 nTempPrefix,
											const ::rtl::OUString& rLName,
											const ::com::sun::star::uno::Reference<
									  	::com::sun::star::xml::sax::XAttributeList>& xTempAttrList )
{
	SvXMLImportContext *pContext(NULL);
	if (!pTextPContext &&
		(nTempPrefix == XML_NAMESPACE_TEXT) &&
		IsXMLToken(rLName, XML_S))
		pContext = new ScXMLTextTContext( GetScImport(), nTempPrefix, rLName, xTempAttrList, this);
	else
	{
		if (!pTextPContext)
		{
            rtl::OUString sSetString;
            if ( pContentBuffer )
                sSetString = pContentBuffer->makeStringAndClear();
            else
                sSetString = sSimpleContent;

            sal_Unicode cNonSpace(0);
            
            sal_Int32 nLength = sSetString.getLength();
            if ( nLength > 0 )
            {
                sal_Unicode cLast = sSetString.getStr()[ nLength - 1 ];
                if ( cLast != (sal_Unicode)' ' )
                {
                    // #i53253# To keep XMLParaContext's whitespace handling in sync,
                    // if there's a non-space character at the end of the existing string,
                    // it has to be processed by XMLParaContext.

                    cNonSpace = cLast;
                    sSetString = sSetString.copy( 0, nLength - 1 );  // remove from the string for SetCursorOnTextImport
                }
            }

            pCellContext->SetCursorOnTextImport( sSetString );

			pTextPContext = GetScImport().GetTextImport()->CreateTextChildContext(
									GetScImport(), nPrefix, sLName, xAttrList);

            if ( cNonSpace != 0 )
            {
                // pass non-space character through XMLParaContext, so a following space isn't ignored
                pTextPContext->Characters( rtl::OUString( cNonSpace ) );
            }
		}
		if (pTextPContext)
			pContext = pTextPContext->CreateChildContext(nTempPrefix, rLName, xTempAttrList);
	}

	if( !pContext )
		pContext = new SvXMLImportContext( GetScImport(), nTempPrefix, rLName );

	return pContext;
}

void ScXMLTextPContext::Characters( const ::rtl::OUString& rChars )
{
	if (!pTextPContext)
    {
        // For the first call to an empty context, copy (ref-counted) the OUString.
        // The OUStringBuffer is used only if there is more complex content.

        if ( !pContentBuffer && sSimpleContent.getLength() == 0 )
            sSimpleContent = rChars;
        else
        {
            if ( !pContentBuffer )
                pContentBuffer = new rtl::OUStringBuffer( sSimpleContent );
            pContentBuffer->append(rChars);
        }
    }
	else
		pTextPContext->Characters(rChars);
}

void ScXMLTextPContext::EndElement()
{
	if (!pTextPContext)
    {
        if ( pContentBuffer )
            pCellContext->SetString(pContentBuffer->makeStringAndClear());
        else
            pCellContext->SetString(sSimpleContent);
    }
	else
	{
		pTextPContext->EndElement();
		GetScImport().SetRemoveLastChar(sal_True);
	}
}