/**************************************************************
 * 
 * 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_xmloff.hxx"
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/uno/Reference.h>

#include <rtl/ustring.hxx>
#include <tools/debug.hxx>
#include "XMLPropertyBackpatcher.hxx"
#include <xmloff/txtimp.hxx>	// XMLTextImportHelper partially implemented here


using ::rtl::OUString;
using ::std::vector;
using ::std::map;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Any;
using ::com::sun::star::beans::XPropertySet;


template<class A>
XMLPropertyBackpatcher<A>::XMLPropertyBackpatcher(
	const ::rtl::OUString& sPropName)
:	sPropertyName(sPropName)
,	bDefaultHandling(sal_False)
,	bPreserveProperty(sal_False)
,	sPreservePropertyName()
{
}

template<class A>
XMLPropertyBackpatcher<A>::XMLPropertyBackpatcher(
	const OUString& sPropName, 
	const OUString& sPreserveName,
	sal_Bool bDefault,
	A aDef)
:	sPropertyName(sPropName)
,	bDefaultHandling(bDefault)
,	bPreserveProperty(sPreserveName.getLength()>0)
,	sPreservePropertyName(sPreserveName)
,	aDefault(aDef)
{
}

template<class A>
XMLPropertyBackpatcher<A>::XMLPropertyBackpatcher(
	const sal_Char* pPropName)
:	bDefaultHandling(sal_False)
,	bPreserveProperty(sal_False)
{
	DBG_ASSERT(pPropName != NULL, "need property name");
	sPropertyName = OUString::createFromAscii(pPropName);
}

template<class A>
XMLPropertyBackpatcher<A>::XMLPropertyBackpatcher(
	const sal_Char* pPropName,
	const sal_Char* pPreservePropName,
	sal_Bool bDefault,
	A aDef)
:	bDefaultHandling(bDefault)
,	bPreserveProperty(pPreservePropName != NULL)
,	aDefault(aDef)
{
	DBG_ASSERT(pPropName != NULL, "need property name");
	sPropertyName = OUString::createFromAscii(pPropName);
	if (pPreservePropName != NULL)
	{
		sPreservePropertyName = OUString::createFromAscii(pPreservePropName);
	}
}

template<class A>
XMLPropertyBackpatcher<A>::~XMLPropertyBackpatcher()
{
	SetDefault();
}


template<class A>
void XMLPropertyBackpatcher<A>::ResolveId(
	const OUString& sName,
	A aValue)
{
	// insert ID into ID map
	aIDMap[sName] = aValue;
	
	// backpatch old references, if backpatch list exists
	if (aBackpatchListMap.count(sName))
	{
		// aah, we have a backpatch list!
		BackpatchListType* pList = 
			(BackpatchListType*)aBackpatchListMap[sName];

		// a) remove list from list map
		aBackpatchListMap.erase(sName);

		// b) for every item, set SequenceNumber
		//    (and preserve Property, if appropriate)
		Any aAny;
		aAny <<= aValue;
		if (bPreserveProperty)
		{
			// preserve version
			for(BackpatchListType::iterator aIter = pList->begin();
				aIter != pList->end();
				aIter++)
			{
				Reference<XPropertySet> xProp = (*aIter);
				Any aPres = xProp->getPropertyValue(sPreservePropertyName);
				xProp->setPropertyValue(sPropertyName, aAny);
				xProp->setPropertyValue(sPreservePropertyName, aPres);
			}
		}
		else
		{
			// without preserve
			for(BackpatchListType::iterator aIter = pList->begin();
				aIter != pList->end();
				aIter++)
			{
				(*aIter)->setPropertyValue(sPropertyName, aAny);
			}
		}

		// c) delete list
		delete pList;
	}
	// else: no backpatch list -> then we're finished
}

template<class A>
void XMLPropertyBackpatcher<A>::SetProperty(
	const Reference<XPropertySet> & xPropSet,
	const OUString& sName)
{
	Reference<XPropertySet> xNonConstPropSet(xPropSet);
	SetProperty(xNonConstPropSet, sName);
}

template<class A>
void XMLPropertyBackpatcher<A>::SetProperty(
	Reference<XPropertySet> & xPropSet,
	const OUString& sName)
{
	if (aIDMap.count(sName))
	{
		// we know this ID -> set property
		Any aAny;
		aAny <<= aIDMap[sName];
		xPropSet->setPropertyValue(sPropertyName, aAny);
	}
	else
	{
		// ID unknown -> into backpatch list for later fixup
		if (! aBackpatchListMap.count(sName))
		{
			// create backpatch list for this name
			BackpatchListType* pTmp = new BackpatchListType() ;
			aBackpatchListMap[sName] = (void*)pTmp;
		}

		// insert footnote
		((BackpatchListType*)aBackpatchListMap[sName])->push_back(xPropSet);
	}
}

template<class A>
void XMLPropertyBackpatcher<A>::SetDefault()
{
	if (bDefaultHandling)
	{
		// not implemented yet
	}
}

// force instantiation of templates
template class XMLPropertyBackpatcher<sal_Int16>;
template class XMLPropertyBackpatcher<OUString>;

struct SAL_DLLPRIVATE XMLTextImportHelper::BackpatcherImpl
{
    /// backpatcher for references to footnotes and endnotes
    ::std::auto_ptr< XMLPropertyBackpatcher<sal_Int16> >
        m_pFootnoteBackpatcher;

    /// backpatchers for references to sequences
    ::std::auto_ptr< XMLPropertyBackpatcher<sal_Int16> >
        m_pSequenceIdBackpatcher;

    ::std::auto_ptr< XMLPropertyBackpatcher< ::rtl::OUString> >
        m_pSequenceNameBackpatcher;

};

::boost::shared_ptr<XMLTextImportHelper::BackpatcherImpl>
XMLTextImportHelper::MakeBackpatcherImpl()
{
    // n.b.: the shared_ptr stores the dtor!
    return ::boost::shared_ptr<BackpatcherImpl>(new BackpatcherImpl);
}

static ::rtl::OUString const& GetSequenceNumber()
{
    static ::rtl::OUString s_SequenceNumber(
        RTL_CONSTASCII_USTRINGPARAM("SequenceNumber"));
    return s_SequenceNumber;
}

//
// XMLTextImportHelper
//
// Code from XMLTextImportHelper using the XMLPropertyBackpatcher is
// implemented here. The reason is that in the unxsols2 environment,
// all templates are instatiated as file local (switch
// -instances=static), and thus are not accessible from the outside.
//
// The previous solution was to force additional instantiation of
// XMLPropertyBackpatcher in txtimp.cxx. This solution combines all
// usage of the XMLPropertyBackpatcher in XMLPropertyBackpatcher.cxx
// instead.
//

XMLPropertyBackpatcher<sal_Int16>& XMLTextImportHelper::GetFootnoteBP()
{
    if (!m_pBackpatcherImpl->m_pFootnoteBackpatcher.get())
    {
        m_pBackpatcherImpl->m_pFootnoteBackpatcher.reset(
            new XMLPropertyBackpatcher<sal_Int16>(GetSequenceNumber()));
    }
    return *m_pBackpatcherImpl->m_pFootnoteBackpatcher;
}

XMLPropertyBackpatcher<sal_Int16>& XMLTextImportHelper::GetSequenceIdBP()
{
    if (!m_pBackpatcherImpl->m_pSequenceIdBackpatcher.get())
    {
        m_pBackpatcherImpl->m_pSequenceIdBackpatcher.reset(
            new XMLPropertyBackpatcher<sal_Int16>(GetSequenceNumber()));
    }
    return *m_pBackpatcherImpl->m_pSequenceIdBackpatcher;
}

XMLPropertyBackpatcher<OUString>& XMLTextImportHelper::GetSequenceNameBP()
{
    static ::rtl::OUString s_SourceName(
        RTL_CONSTASCII_USTRINGPARAM("SourceName"));
    if (!m_pBackpatcherImpl->m_pSequenceNameBackpatcher.get())
    {
        m_pBackpatcherImpl->m_pSequenceNameBackpatcher.reset(
            new XMLPropertyBackpatcher<OUString>(s_SourceName));
    }
    return *m_pBackpatcherImpl->m_pSequenceNameBackpatcher;
}

void XMLTextImportHelper::InsertFootnoteID(
	const OUString& sXMLId, 
	sal_Int16 nAPIId)
{
	GetFootnoteBP().ResolveId(sXMLId, nAPIId);
}

void XMLTextImportHelper::ProcessFootnoteReference(
	const OUString& sXMLId, 
	const Reference<XPropertySet> & xPropSet)
{
	GetFootnoteBP().SetProperty(xPropSet, sXMLId);
}

void XMLTextImportHelper::InsertSequenceID(
	const OUString& sXMLId, 
	const OUString& sName,
	sal_Int16 nAPIId)
{
	GetSequenceIdBP().ResolveId(sXMLId, nAPIId);
	GetSequenceNameBP().ResolveId(sXMLId, sName);
}

void XMLTextImportHelper::ProcessSequenceReference(
	const OUString& sXMLId, 
	const Reference<XPropertySet> & xPropSet)
{
	GetSequenceIdBP().SetProperty(xPropSet, sXMLId);
	GetSequenceNameBP().SetProperty(xPropSet, sXMLId);
}