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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */

#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/awt/XVclWindowPeer.hpp>
#include <comphelper/processfactory.hxx>
#include <osl/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
            SolarMutexGuard aGuard;

            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( OUString( "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(
                        OUString("Wrong count of parameters!" ),
                        uno::Reference< uno::XInterface >(),
                        0 );

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

    m_bInitialized = sal_True;
}


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

// --------------------------------------------------------
::sal_Bool SAL_CALL ODocumentCloser::supportsService( const OUString& ServiceName )
    throw (uno::RuntimeException)
{
    uno::Sequence< 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< OUString > SAL_CALL ODocumentCloser::getSupportedServiceNames()
    throw (uno::RuntimeException)
{
    return impl_staticGetSupportedServiceNames();
}

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

// --------------------------------------------------------
OUString SAL_CALL ODocumentCloser::impl_staticGetImplementationName()
{
    return OUString( "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(
        comphelper::getComponentContext( xServiceManager ) );
    return static_cast< cppu::OWeakObject * >( new ODocumentCloser( xContext ) );
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */