/**************************************************************
 * 
 * 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_svtools.hxx"
#include <com/sun/star/util/XCloseBroadcaster.hpp>
#include <com/sun/star/util/XCloseable.hpp>
#include <com/sun/star/lang/DisposedException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/frame/DoubleInitializationException.hpp>
#include <com/sun/star/frame/DoubleInitializationException.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/awt/XVclWindowPeer.hpp>

#include <vos/mutex.hxx>
#include <vcl/svapp.hxx>
#include <vcl/dialog.hxx>
#include <tools/link.hxx>
#include <toolkit/helper/vclunohelper.hxx>

#include "documentcloser.hxx"

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


// ====================================================================
// MainThreadFrameCloserRequest
// ====================================================================

class MainThreadFrameCloserRequest
{
	uno::Reference< frame::XFrame > m_xFrame;

	public:
	    MainThreadFrameCloserRequest( const uno::Reference< frame::XFrame >& xFrame )
		: m_xFrame( xFrame )
		{}

		DECL_STATIC_LINK( MainThreadFrameCloserRequest, worker, MainThreadFrameCloserRequest* );

		static void Start( MainThreadFrameCloserRequest* pRequest );
};

// --------------------------------------------------------
void MainThreadFrameCloserRequest::Start( MainThreadFrameCloserRequest* pMTRequest )
{
	if ( pMTRequest )
	{
		if ( Application::GetMainThreadIdentifier() == osl_getThreadIdentifier( NULL ) )
		{
			// this is the main thread
			worker( NULL, pMTRequest );
		}
		else
			Application::PostUserEvent( STATIC_LINK( NULL, MainThreadFrameCloserRequest, worker ), pMTRequest );
	}
}

// --------------------------------------------------------
IMPL_STATIC_LINK( MainThreadFrameCloserRequest, worker, MainThreadFrameCloserRequest*, pMTRequest )
{
    (void) pThis; // unused
	if ( pMTRequest )
	{
		if ( pMTRequest->m_xFrame.is() )
		{
			// this is the main thread, the solar mutex must be locked
			::vos::OGuard aGuard( Application::GetSolarMutex() );

			try
			{
				uno::Reference< awt::XWindow > xWindow = pMTRequest->m_xFrame->getContainerWindow();
				uno::Reference< awt::XVclWindowPeer > xWinPeer( xWindow, uno::UNO_QUERY_THROW );

				xWindow->setVisible( sal_False );

				// reparent the window
				xWinPeer->setProperty( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "PluginParent" ) ),
										uno::makeAny( (sal_Int64) 0 ) );

				Window* pWindow = VCLUnoHelper::GetWindow( xWindow );
				if ( pWindow )
					Dialog::EndAllDialogs( pWindow );
			}
			catch( uno::Exception& )
			{
				// ignore all the errors
			}

			try
			{
				uno::Reference< util::XCloseable > xCloseable( pMTRequest->m_xFrame, uno::UNO_QUERY_THROW );
				xCloseable->close( sal_True );
			}
			catch( uno::Exception& )
			{
				// ignore all the errors
			}
		}

		delete pMTRequest;
	}

	return 0;
}


// ====================================================================
// ODocumentCloser
// ====================================================================

// --------------------------------------------------------
ODocumentCloser::ODocumentCloser( const uno::Reference< uno::XComponentContext >& xContext )
: m_xContext( xContext )
, m_pListenersContainer( NULL )
, m_bDisposed( sal_False )
, m_bInitialized( sal_False )
{
}

// --------------------------------------------------------
ODocumentCloser::~ODocumentCloser()
{
	if ( m_pListenersContainer )
	{
		delete m_pListenersContainer;
		m_pListenersContainer = NULL;
	}
}

// XComponent
// --------------------------------------------------------
void SAL_CALL ODocumentCloser::dispose()
	throw (uno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

   	lang::EventObject aSource( static_cast< ::cppu::OWeakObject* >(this) );
	if ( m_pListenersContainer )
		m_pListenersContainer->disposeAndClear( aSource );

	// TODO: trigger a main thread execution to close the frame
	if ( m_xFrame.is() )
	{
		// the created object will be deleted after thread execution
		MainThreadFrameCloserRequest* pCloser = new MainThreadFrameCloserRequest( m_xFrame );
		MainThreadFrameCloserRequest::Start( pCloser );
	}

	m_bDisposed = sal_True;
}

// --------------------------------------------------------
void SAL_CALL ODocumentCloser::addEventListener( const uno::Reference< lang::XEventListener >& xListener )
	throw (uno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if ( m_bDisposed )
		throw lang::DisposedException(); // TODO

	if ( !m_pListenersContainer )
		m_pListenersContainer = new ::cppu::OInterfaceContainerHelper( m_aMutex );

	m_pListenersContainer->addInterface( xListener );
}

// --------------------------------------------------------
void SAL_CALL ODocumentCloser::removeEventListener( const uno::Reference< lang::XEventListener >& xListener )
	throw (uno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if ( m_pListenersContainer )
		m_pListenersContainer->removeInterface( xListener );
}

// XInitialization
// --------------------------------------------------------
void SAL_CALL ODocumentCloser::initialize( const uno::Sequence< uno::Any >& aArguments )
	throw (uno::Exception, uno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if ( m_bInitialized )
		throw frame::DoubleInitializationException();

	if ( m_bDisposed )
		throw lang::DisposedException(); // TODO
	
	if ( !m_refCount )
		throw uno::RuntimeException(); // the object must be refcounted already!

	sal_Int32 nLen = aArguments.getLength();
	if ( nLen != 1 )
		throw lang::IllegalArgumentException(
						::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("Wrong count of parameters!" ) ),
						uno::Reference< uno::XInterface >(),
						0 );

	if ( !( aArguments[0] >>= m_xFrame ) || !m_xFrame.is() )
		throw lang::IllegalArgumentException(
				::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("Nonempty reference is expected as the first argument!" ) ),
				uno::Reference< uno::XInterface >(),
				0 );

	m_bInitialized = sal_True;
}


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

// --------------------------------------------------------
::sal_Bool SAL_CALL ODocumentCloser::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 ODocumentCloser::getSupportedServiceNames()
	throw (uno::RuntimeException)
{
	return impl_staticGetSupportedServiceNames();
}

// Static methods
// --------------------------------------------------------
uno::Sequence< ::rtl::OUString > SAL_CALL ODocumentCloser::impl_staticGetSupportedServiceNames()
{
    const rtl::OUString aServiceName( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.embed.DocumentCloser" ) );
    return uno::Sequence< rtl::OUString >( &aServiceName, 1 );
}

// --------------------------------------------------------
::rtl::OUString SAL_CALL ODocumentCloser::impl_staticGetImplementationName()
{
    return rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.comp.embed.DocumentCloser" ) );
}

// --------------------------------------------------------
uno::Reference< uno::XInterface > SAL_CALL ODocumentCloser::impl_staticCreateSelfInstance(
								const uno::Reference< lang::XMultiServiceFactory >& xServiceManager )
{
    uno::Reference< uno::XComponentContext > xContext;
    uno::Reference< beans::XPropertySet > xPropSet( xServiceManager, uno::UNO_QUERY );
    if ( xPropSet.is() )
        xPropSet->getPropertyValue( rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "DefaultContext" ) ) ) >>= xContext;

    if ( !xContext.is() )
    {
        throw uno::RuntimeException(
            rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "Unable to obtain component context from service manager!" ) ),
            uno::Reference< uno::XInterface >() );
    }

    return static_cast< cppu::OWeakObject * >( new ODocumentCloser( xContext ) );
}