/**************************************************************
 *
 * 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_comphelper.hxx"
#include <comphelper/componentmodule.hxx>

/** === begin UNO includes === **/
/** === end UNO includes === **/
#include <comphelper/sequence.hxx>
#include <osl/diagnose.h>

#include <vector>

//........................................................................
namespace comphelper
{
//........................................................................

    using namespace ::cppu;
    /** === being UNO using === **/
    using ::com::sun::star::uno::Sequence;
    using ::com::sun::star::uno::RuntimeException;
    using ::com::sun::star::uno::Reference;
    using ::com::sun::star::lang::XMultiServiceFactory;
    using ::com::sun::star::registry::XRegistryKey;
    using ::com::sun::star::uno::Exception;
    using ::com::sun::star::uno::XInterface;
    /** === end UNO using === **/

    typedef ::std::vector< ComponentDescription >   ComponentDescriptions;

	//=========================================================================
	//= OModuleImpl
	//=========================================================================
	/** implementation for <type>OModule</type>. not threadsafe, has to be guarded by it's owner
	*/
	class OModuleImpl
	{
    public:
        ComponentDescriptions                           m_aRegisteredComponents;

		OModuleImpl();
		~OModuleImpl();
	};

	//-------------------------------------------------------------------------
	OModuleImpl::OModuleImpl()
	{
	}

	//-------------------------------------------------------------------------
	OModuleImpl::~OModuleImpl()
	{
	}

	//=========================================================================
	//= OModule
	//=========================================================================
	//-------------------------------------------------------------------------
    OModule::OModule()
        :m_nClients( 0 )
	    ,m_pImpl( new OModuleImpl )
    {
    }

    OModule::~OModule() {}

	//-------------------------------------------------------------------------
    void OModule::registerClient( OModule::ClientAccess )
	{
		::osl::MutexGuard aGuard(m_aMutex);
        if ( 1 == osl_incrementInterlockedCount( &m_nClients ) )
            onFirstClient();
	}

	//-------------------------------------------------------------------------
	void OModule::revokeClient( OModule::ClientAccess )
	{
		::osl::MutexGuard aGuard(m_aMutex);
        if ( 0 == osl_decrementInterlockedCount( &m_nClients ) )
            onLastClient();
	}

	//--------------------------------------------------------------------------
    void OModule::onFirstClient()
    {
    }

	//--------------------------------------------------------------------------
    void OModule::onLastClient()
    {
    }

    //--------------------------------------------------------------------------
    void OModule::registerImplementation( const ComponentDescription& _rComp )
    {
        ::osl::MutexGuard aGuard( m_aMutex );
        if ( !m_pImpl )
            throw RuntimeException();

        m_pImpl->m_aRegisteredComponents.push_back( _rComp );
    }

	//--------------------------------------------------------------------------
    void OModule::registerImplementation( const ::rtl::OUString& _rImplementationName, const ::com::sun::star::uno::Sequence< ::rtl::OUString >& _rServiceNames,
        ::cppu::ComponentFactoryFunc _pCreateFunction, FactoryInstantiation _pFactoryFunction )
	{
        ComponentDescription aComponent( _rImplementationName, _rServiceNames, ::rtl::OUString(), _pCreateFunction, _pFactoryFunction );
        registerImplementation( aComponent );
	}

	//--------------------------------------------------------------------------
	void* OModule::getComponentFactory( const sal_Char* _pImplementationName, void* _pServiceManager, void* /*_pRegistryKey*/ )
	{
        Reference< XInterface > xFactory( getComponentFactory(
            ::rtl::OUString::createFromAscii( _pImplementationName ),
            Reference< XMultiServiceFactory >( static_cast< XMultiServiceFactory* >( _pServiceManager ) )
        ) );
        return xFactory.get();
    }

	//--------------------------------------------------------------------------
	Reference< XInterface > OModule::getComponentFactory( const ::rtl::OUString& _rImplementationName,
        const Reference< XMultiServiceFactory >& /* _rxServiceManager */ )
	{
		Reference< XInterface > xReturn;

        for (   ComponentDescriptions::const_iterator component = m_pImpl->m_aRegisteredComponents.begin();
                component != m_pImpl->m_aRegisteredComponents.end();
                ++component
            )
		{
			if ( component->sImplementationName == _rImplementationName )
			{
				xReturn = component->pFactoryCreationFunc(
                    component->pComponentCreationFunc,
                    component->sImplementationName,
                    component->aSupportedServices,
                    NULL
                );
				if ( xReturn.is() )
				{
					xReturn->acquire();
					return xReturn.get();
				}
			}
		}

		return NULL;
	}

//........................................................................
} // namespace comphelper
//........................................................................