/**************************************************************
 * 
 * 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_embeddedobj.hxx"

#include "xexecutor.hxx"
#include <vcl/svapp.hxx>
#include <osl/thread.hxx>

using namespace ::com::sun::star;

void MainThreadExecutor_Impl::execute()
{
	Application::PostUserEvent( LINK( this, MainThreadExecutor_Impl, executor ), NULL );
}

IMPL_LINK( MainThreadExecutor_Impl, executor, void*, pDummyParam )
{
	if ( m_xJob.is() )
	{
		try {
			m_xJob->execute( m_aArgs );
		} catch( uno::Exception& ) {}
	}

	m_bExecuted = sal_True;
	delete this;

	return 0;
}

MainThreadExecutor_Impl::MainThreadExecutor_Impl( const uno::Reference< task::XJob >& xJob,
												  const uno::Sequence< beans::NamedValue >& aArguments )
: m_xJob( xJob )
, m_aArgs( aArguments )
, m_bExecuted( sal_False )
{
}

//-------------------------------------------------------------------------
uno::Any SAL_CALL UNOMainThreadExecutor::execute( const uno::Sequence< beans::NamedValue >& aArguments )
	throw ( lang::IllegalArgumentException,
			uno::Exception,
			uno::RuntimeException )
{
	uno::Reference< task::XJob > xJob;

	if ( aArguments.getLength() > 0 && aArguments[0].Name.equalsAscii( "JobToExecute" ) )
		aArguments[0].Value >>= xJob;

	if ( !xJob.is() )
		throw lang::IllegalArgumentException();

	uno::Sequence< beans::NamedValue > aArgsForJob;
	if ( aArguments.getLength() > 1 )
		aArgsForJob = uno::Sequence< beans::NamedValue >( aArguments.getConstArray() + 1, aArguments.getLength() - 1 );

	MainThreadExecutor_Impl* pExecutor = new MainThreadExecutor_Impl( xJob, aArgsForJob );
	pExecutor->execute();

	// it is not a main thread, so it can be blocked
	// while( !pExecutor->isExecuted() )
	//	::osl::Thread::yield();

	// TODO: implement transferring of the return values and exceptions

	return uno::Any();
}

//-------------------------------------------------------------------------
uno::Sequence< ::rtl::OUString > SAL_CALL UNOMainThreadExecutor::impl_staticGetSupportedServiceNames()
{
    uno::Sequence< ::rtl::OUString > aRet(1);
    aRet[0] = ::rtl::OUString::createFromAscii( "com.sun.star.comp.thread.MainThreadExecutor" );
    return aRet;
}

//-------------------------------------------------------------------------
::rtl::OUString SAL_CALL UNOMainThreadExecutor::impl_staticGetImplementationName()
{
    return ::rtl::OUString::createFromAscii( "com.sun.star.comp.thread.MainThreadExecutor" );
}

//-------------------------------------------------------------------------
uno::Reference< uno::XInterface > SAL_CALL UNOMainThreadExecutor::impl_staticCreateSelfInstance(
			const uno::Reference< lang::XMultiServiceFactory >& xServiceManager )
{
	return uno::Reference< uno::XInterface >( *new UNOMainThreadExecutor( xServiceManager ) );
}

//-------------------------------------------------------------------------
::rtl::OUString SAL_CALL UNOMainThreadExecutor::getImplementationName()
	throw ( uno::RuntimeException )
{
	return impl_staticGetImplementationName();
}

//-------------------------------------------------------------------------
sal_Bool SAL_CALL UNOMainThreadExecutor::supportsService( const ::rtl::OUString& ServiceName )
	throw ( uno::RuntimeException )
{
	uno::Sequence< ::rtl::OUString > aSeq = impl_staticGetSupportedServiceNames();

	for ( sal_Int32 nInd = 0; nInd < aSeq.getLength(); nInd++ )
    	if ( ServiceName.compareTo( aSeq[nInd] ) == 0 )
        	return sal_True;

	return sal_False;
}

//-------------------------------------------------------------------------
uno::Sequence< ::rtl::OUString > SAL_CALL UNOMainThreadExecutor::getSupportedServiceNames()
	throw ( uno::RuntimeException )
{
	return impl_staticGetSupportedServiceNames();
}