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 *
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include <set>

#include "svx/UnoNamespaceMap.hxx"
#include <com/sun/star/container/XNameAccess.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>

#ifndef _CPPUHELPER_IMPLBASE3_HXX_
#include <cppuhelper/implbase2.hxx>
#endif
#include <osl/diagnose.h>
#include <osl/mutex.hxx>
#include <comphelper/stl_types.hxx>
#include <svl/itempool.hxx>
#include "svx/unoapi.hxx"
#include "editeng/xmlcnitm.hxx"


using namespace ::comphelper;
using namespace ::osl;
using namespace ::cppu;
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::container;
using namespace ::com::sun::star::drawing;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;

namespace svx
{
	/**	implements a component to export namespaces of all SvXMLAttrContainerItem inside
		one or two pools with a variable count of which ids.
	*/
	class NamespaceMap : public WeakImplHelper2< XNameAccess, XServiceInfo >
	{
	private:
		sal_uInt16* mpWhichIds;
		SfxItemPool* mpPool;

	public:
		NamespaceMap( sal_uInt16* pWhichIds, SfxItemPool* pPool );
		virtual ~NamespaceMap();

		// XNameAccess
		virtual Any SAL_CALL getByName( const ::rtl::OUString& aName ) throw (NoSuchElementException, WrappedTargetException, RuntimeException);
		virtual Sequence< ::rtl::OUString > SAL_CALL getElementNames(  ) throw (RuntimeException);
		virtual sal_Bool SAL_CALL hasByName( const ::rtl::OUString& aName ) throw (RuntimeException);

		// XElementAccess
		virtual Type SAL_CALL getElementType(  ) throw (RuntimeException);
		virtual sal_Bool SAL_CALL hasElements(  ) throw (RuntimeException);

		// XServiceInfo
		virtual ::rtl::OUString SAL_CALL getImplementationName(  ) throw(RuntimeException);
		virtual sal_Bool SAL_CALL supportsService( const ::rtl::OUString& ServiceName ) throw(RuntimeException);
		virtual Sequence< ::rtl::OUString > SAL_CALL getSupportedServiceNames(  ) throw(RuntimeException);
	};

	Reference< XInterface > SAL_CALL NamespaceMap_createInstance( sal_uInt16* pWhichIds, SfxItemPool* pPool1, SfxItemPool* )
	{
		return (XWeak*)new NamespaceMap( pWhichIds, pPool1 );
	}

	Reference< XInterface > SAL_CALL NamespaceMap_createInstance( sal_uInt16* pWhichIds, SfxItemPool* pPool )
	{
		return (XWeak*)new NamespaceMap( pWhichIds, pPool );
	}

	Sequence< ::rtl::OUString > SAL_CALL NamespaceMap_getSupportedServiceNames()
		throw()
	{
		Sequence< ::rtl::OUString > aSupportedServiceNames( 1 );
		aSupportedServiceNames[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.xml.NamespaceMap" ) );
		return aSupportedServiceNames;
	}

	::rtl::OUString SAL_CALL NamespaceMap_getImplementationName()
		throw()
	{
		return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.comp.Svx.NamespaceMap" ) );
	}


	class NamespaceIteratorImpl
	{
	private:
		SfxItemPool* mpPool;

		sal_uInt16* mpWhichId;

		sal_uInt32 mnItemCount;
		sal_uInt32 mnItem;

		const SvXMLAttrContainerItem* mpCurrentAttr;
		sal_uInt16 mnCurrentAttr;

	public:

		NamespaceIteratorImpl( sal_uInt16* pWhichIds, SfxItemPool* pPool );

		sal_Bool next( ::rtl::OUString& rPrefix, ::rtl::OUString& rURL );
	};
}

using namespace ::svx;

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

NamespaceIteratorImpl::NamespaceIteratorImpl( sal_uInt16* pWhichIds, SfxItemPool* pPool )
{
	mpPool = pPool;
	mpCurrentAttr = NULL;
	mnCurrentAttr = 0;

	mpWhichId = pWhichIds;

	mnItem = 0;
	mnItemCount = (mpWhichId && (0 != *mpWhichId) && mpPool) ? mpPool->GetItemCount2( *mpWhichId ) : 0;
}

sal_Bool NamespaceIteratorImpl::next( ::rtl::OUString& rPrefix, ::rtl::OUString& rURL )
{
	// we still need to process the current attribute
	if( mpCurrentAttr && (mnCurrentAttr != USHRT_MAX) )
	{
		rPrefix = mpCurrentAttr->GetPrefix( mnCurrentAttr );
		rURL = mpCurrentAttr->GetNamespace( mnCurrentAttr );

		mnCurrentAttr = mpCurrentAttr->GetNextNamespaceIndex( mnCurrentAttr );
		return sal_True;
	}

	// we need the next namespace item
	mpCurrentAttr = NULL;

	const SfxPoolItem* pItem = 0;
	// look for the next available item in the current pool
	while( (mnItem < mnItemCount) && ( NULL == (pItem = mpPool->GetItem2( *mpWhichId, mnItem ) ) ) )
		mnItem++;

	// are we finished with the current whichid?
	if( mnItem == mnItemCount )
	{
		mpWhichId++;

		// are we finished with the current pool?
		if( 0 != *mpWhichId )
		{
			mnItem = 0;
			mnItemCount = (mpWhichId && (0 != *mpWhichId) && mpPool) ? mpPool->GetItemCount2( *mpWhichId ) : 0;
			return next( rPrefix, rURL );
		}

		pItem = NULL;
	}

	if( pItem )
	{
		mnItem++;

		// get that item and see if there namespaces inside
		const SvXMLAttrContainerItem *pUnknown = (const SvXMLAttrContainerItem *)pItem;
		if( (pUnknown->GetAttrCount() > 0) )
		{
			mpCurrentAttr = pUnknown;
			mnCurrentAttr = pUnknown->GetFirstNamespaceIndex();
		}
		return next( rPrefix, rURL );
	}

	return false;
}

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

NamespaceMap::NamespaceMap( sal_uInt16* pWhichIds, SfxItemPool* pPool )
: mpWhichIds( pWhichIds ), mpPool( pPool )
{
}

NamespaceMap::~NamespaceMap()
{
}

// XNameAccess
Any SAL_CALL NamespaceMap::getByName( const ::rtl::OUString& aName ) throw (NoSuchElementException, WrappedTargetException, RuntimeException)
{
	NamespaceIteratorImpl aIter( mpWhichIds, mpPool );

	::rtl::OUString aPrefix;
	::rtl::OUString aURL;

	sal_Bool bFound;

	do
	{
		bFound = aIter.next( aPrefix, aURL );
	}
	while( bFound && (aPrefix != aName ) );

	if( !bFound )
		throw NoSuchElementException();

	return makeAny( aURL );
}

Sequence< ::rtl::OUString > SAL_CALL NamespaceMap::getElementNames() throw (RuntimeException)
{
	NamespaceIteratorImpl aIter( mpWhichIds, mpPool );

	::rtl::OUString aPrefix;
	::rtl::OUString aURL;

	std::set< ::rtl::OUString, comphelper::UStringLess > aPrefixSet;

	while( aIter.next( aPrefix, aURL ) )
		aPrefixSet.insert( aPrefix );

	Sequence< ::rtl::OUString > aSeq( aPrefixSet.size() );
	::rtl::OUString* pPrefixes = aSeq.getArray();

	std::set< ::rtl::OUString, comphelper::UStringLess >::iterator aPrefixIter( aPrefixSet.begin() );
	const std::set< ::rtl::OUString, comphelper::UStringLess >::iterator aEnd( aPrefixSet.end() );

	while( aPrefixIter != aEnd )
	{
		*pPrefixes++ = *aPrefixIter++;
	}

	return aSeq;
}

sal_Bool SAL_CALL NamespaceMap::hasByName( const ::rtl::OUString& aName ) throw (RuntimeException)
{
	NamespaceIteratorImpl aIter( mpWhichIds, mpPool );

	::rtl::OUString aPrefix;
	::rtl::OUString aURL;

	sal_Bool bFound;

	do
	{
		bFound = aIter.next( aPrefix, aURL );
	}
	while( bFound && (aPrefix != aName ) );

	return bFound;
}

// XElementAccess
Type SAL_CALL NamespaceMap::getElementType() throw (RuntimeException)
{
	return ::getCppuType( (const ::rtl::OUString*) 0 );
}

sal_Bool SAL_CALL NamespaceMap::hasElements() throw (RuntimeException)
{
	NamespaceIteratorImpl aIter( mpWhichIds, mpPool );

	::rtl::OUString aPrefix;
	::rtl::OUString aURL;

	return aIter.next( aPrefix, aURL );
}

// XServiceInfo
::rtl::OUString SAL_CALL NamespaceMap::getImplementationName(  )
	throw(RuntimeException)
{
	return NamespaceMap_getImplementationName();
}

sal_Bool SAL_CALL NamespaceMap::supportsService( const ::rtl::OUString& )
	throw(RuntimeException)
{
	return sal_True;
}

Sequence< ::rtl::OUString > SAL_CALL NamespaceMap::getSupportedServiceNames(  )
	throw(RuntimeException)
{
	return NamespaceMap_getSupportedServiceNames();
}