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 * 
 * 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
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 *************************************************************/


#ifndef CHART2_CLONEHELPER_HXX
#define CHART2_CLONEHELPER_HXX

#include <com/sun/star/util/XCloneable.hpp>

#include <map>
#include <functional>
#include <algorithm>

namespace chart
{
namespace CloneHelper
{

/// functor that clones a UNO-Reference
template< class Interface >
    struct CreateRefClone : public ::std::unary_function< Interface, Interface >
{
    Interface operator() ( const Interface & xOther )
    {
        Interface xResult;
        ::com::sun::star::uno::Reference< ::com::sun::star::util::XCloneable >
              xCloneable( xOther, ::com::sun::star::uno::UNO_QUERY );
        if( xCloneable.is())
            xResult.set( xCloneable->createClone(), ::com::sun::star::uno::UNO_QUERY );

        return xResult;
    }
};

/// functor that clones a map element with a UNO-Reference as value
template< typename Key, class Interface >
    struct CreateRefWithKeyClone : public ::std::unary_function<
        ::std::pair<  Key, Interface >,
        ::std::pair<  Key, Interface > >
{
    ::std::pair< Key, Interface > operator() (
        const ::std::pair< Key, Interface > & rOther )
    {
        Interface xResult;
        ::com::sun::star::uno::Reference< ::com::sun::star::util::XCloneable >
              xCloneable( rOther.second, ::com::sun::star::uno::UNO_QUERY );
        if( xCloneable.is())
            xResult.set( xCloneable->createClone(), ::com::sun::star::uno::UNO_QUERY );

        return ::std::make_pair< Key, Interface >( rOther.first, xResult );
    }
};

/// clones a vector of UNO-References
template< class Interface >
    void CloneRefVector(
        const ::std::vector< Interface > & rSource,
        ::std::vector< Interface > & rDestination )
{
    ::std::transform( rSource.begin(), rSource.end(),
                      ::std::back_inserter( rDestination ),
                      CreateRefClone< Interface >());
}

template< typename  Key, class Interface >
    void CloneRefPairVector(
        const ::std::vector< ::std::pair< Key, Interface > > & rSource,
        ::std::vector< ::std::pair< Key, Interface > > & rDestination )
{
    ::std::transform( rSource.begin(), rSource.end(),
                      ::std::back_inserter( rDestination ),
                      CreateRefWithKeyClone< Key, Interface >());
}

/// clones a map of elements with a UNO-Reference as value
template< typename Key, class Interface >
    void CloneRefMap(
        const ::std::map< Key, Interface > & rSource,
        ::std::map< Key, Interface > & rDestination )
{
    ::std::transform( rSource.begin(), rSource.end(),
                      ::std::inserter( rDestination, rDestination.begin() ),
                      CreateRefWithKeyClone< const Key, Interface >());
}

/// clones a UNO-sequence of UNO-References
template< class Interface >
    void CloneRefSequence(
        const ::com::sun::star::uno::Sequence< Interface > & rSource,
        ::com::sun::star::uno::Sequence< Interface > & rDestination )
{
    rDestination.realloc( rSource.getLength());
    ::std::transform( rSource.getConstArray(), rSource.getConstArray() + rSource.getLength(),
                      rDestination.getArray(),
                      CreateRefClone< Interface >());
}

} //  namespace CloneHelper
} //  namespace chart

// CHART2_CLONEHELPER_HXX
#endif