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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 "comphelper_module.hxx"
#include <cppuhelper/supportsservice.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/XDesktop.hpp>
#include <com/sun/star/frame/DoubleInitializationException.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include "instancelocker.hxx"
using namespace ::com::sun::star;
// ====================================================================
// OInstanceLocker
// ====================================================================
// --------------------------------------------------------
OInstanceLocker::OInstanceLocker( const uno::Reference< uno::XComponentContext >& xContext )
: m_xContext( xContext )
, m_pLockListener( NULL )
, m_pListenersContainer( NULL )
, m_bDisposed( sal_False )
, m_bInitialized( sal_False )
{
}
// --------------------------------------------------------
OInstanceLocker::~OInstanceLocker()
{
if ( !m_bDisposed )
{
m_refCount++; // to call dispose
try {
dispose();
}
catch ( uno::RuntimeException& )
{}
}
if ( m_pListenersContainer )
{
delete m_pListenersContainer;
m_pListenersContainer = NULL;
}
}
// XComponent
// --------------------------------------------------------
void SAL_CALL OInstanceLocker::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 );
if ( m_xLockListener.is() )
{
if ( m_pLockListener )
{
m_pLockListener->Dispose();
m_pLockListener = NULL;
}
m_xLockListener = uno::Reference< uno::XInterface >();
}
m_bDisposed = sal_True;
}
// --------------------------------------------------------
void SAL_CALL OInstanceLocker::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 OInstanceLocker::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 OInstanceLocker::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!
uno::Reference< uno::XInterface > xInstance;
uno::Reference< embed::XActionsApproval > xApproval;
sal_Int32 nModes = 0;
try
{
sal_Int32 nLen = aArguments.getLength();
if ( nLen < 2 || nLen > 3 )
throw lang::IllegalArgumentException(
OUString( "Wrong count of parameters!" ),
uno::Reference< uno::XInterface >(),
0 );
if ( !( aArguments[0] >>= xInstance ) || !xInstance.is() )
throw lang::IllegalArgumentException(
OUString( "Nonempty reference is expected as the first argument!" ),
uno::Reference< uno::XInterface >(),
0 );
if (
!( aArguments[1] >>= nModes ) ||
(
!( nModes & embed::Actions::PREVENT_CLOSE ) &&
!( nModes & embed::Actions::PREVENT_TERMINATION )
)
)
{
throw lang::IllegalArgumentException(
OUString("The correct modes set is expected as the second argument!"),
uno::Reference< uno::XInterface >(),
0 );
}
if ( nLen == 3 && !( aArguments[2] >>= xApproval ) )
throw lang::IllegalArgumentException(
OUString( "If the third argument is provided, it must be XActionsApproval implementation!" ),
uno::Reference< uno::XInterface >(),
0 );
m_pLockListener = new OLockListener( uno::Reference< lang::XComponent > ( static_cast< lang::XComponent* >( this ) ),
xInstance,
nModes,
xApproval );
m_xLockListener = uno::Reference< uno::XInterface >( static_cast< OWeakObject* >( m_pLockListener ) );
m_pLockListener->Init();
}
catch( uno::Exception& )
{
dispose();
throw;
}
m_bInitialized = sal_True;
}
// XServiceInfo
OUString SAL_CALL OInstanceLocker::getImplementationName( )
throw (uno::RuntimeException)
{
return getImplementationName_static();
}
::sal_Bool SAL_CALL OInstanceLocker::supportsService( const OUString& ServiceName )
throw (uno::RuntimeException)
{
return cppu::supportsService(this, ServiceName);
}
uno::Sequence< OUString > SAL_CALL OInstanceLocker::getSupportedServiceNames()
throw (uno::RuntimeException)
{
return getSupportedServiceNames_static();
}
// Static methods
// --------------------------------------------------------
uno::Sequence< OUString > SAL_CALL OInstanceLocker::getSupportedServiceNames_static()
{
const OUString aServiceName( "com.sun.star.embed.InstanceLocker" );
return uno::Sequence< OUString >( &aServiceName, 1 );
}
// --------------------------------------------------------
OUString SAL_CALL OInstanceLocker::getImplementationName_static()
{
return OUString( "com.sun.star.comp.embed.InstanceLocker" );
}
// --------------------------------------------------------
uno::Reference< uno::XInterface > SAL_CALL OInstanceLocker::Create(
const uno::Reference< uno::XComponentContext >& rxContext )
{
return static_cast< cppu::OWeakObject * >( new OInstanceLocker( rxContext ) );
}
// ====================================================================
// OLockListener
// ====================================================================
// --------------------------------------------------------
OLockListener::OLockListener( const uno::WeakReference< lang::XComponent >& xWrapper,
const uno::Reference< uno::XInterface >& xInstance,
sal_Int32 nMode,
const uno::Reference< embed::XActionsApproval > xApproval )
: m_xInstance( xInstance )
, m_xApproval( xApproval )
, m_xWrapper( xWrapper )
, m_bDisposed( sal_False )
, m_bInitialized( sal_False )
, m_nMode( nMode )
{
}
// --------------------------------------------------------
OLockListener::~OLockListener()
{
}
// --------------------------------------------------------
void OLockListener::Dispose()
{
::osl::ResettableMutexGuard aGuard( m_aMutex );
if ( m_bDisposed )
return;
if ( m_nMode & embed::Actions::PREVENT_CLOSE )
{
try
{
uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( m_xInstance, uno::UNO_QUERY );
if ( xCloseBroadcaster.is() )
xCloseBroadcaster->removeCloseListener( static_cast< util::XCloseListener* >( this ) );
uno::Reference< util::XCloseable > xCloseable( m_xInstance, uno::UNO_QUERY );
if ( xCloseable.is() )
xCloseable->close( sal_True );
}
catch( uno::Exception& )
{}
}
if ( m_nMode & embed::Actions::PREVENT_TERMINATION )
{
try
{
uno::Reference< frame::XDesktop > xDesktop( m_xInstance, uno::UNO_QUERY_THROW );
xDesktop->removeTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
}
catch( uno::Exception& )
{}
}
m_xInstance = uno::Reference< uno::XInterface >();
m_bDisposed = sal_True;
}
// XEventListener
// --------------------------------------------------------
void SAL_CALL OLockListener::disposing( const lang::EventObject& aEvent )
throw (uno::RuntimeException)
{
::osl::ResettableMutexGuard aGuard( m_aMutex );
// object is disposed
if ( aEvent.Source == m_xInstance )
{
// the object does not listen for anything any more
m_nMode = 0;
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.clear();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
}
}
// XCloseListener
// --------------------------------------------------------
void SAL_CALL OLockListener::queryClosing( const lang::EventObject& aEvent, sal_Bool )
throw (util::CloseVetoException, uno::RuntimeException)
{
// GetsOwnership parameter is always ignored, the user of the service must close the object always
::osl::ResettableMutexGuard aGuard( m_aMutex );
if ( !m_bDisposed && aEvent.Source == m_xInstance && ( m_nMode & embed::Actions::PREVENT_CLOSE ) )
{
try
{
uno::Reference< embed::XActionsApproval > xApprove = m_xApproval;
// unlock the mutex here
aGuard.clear();
if ( xApprove.is() && xApprove->approveAction( embed::Actions::PREVENT_CLOSE ) )
throw util::CloseVetoException();
}
catch( util::CloseVetoException& )
{
// rethrow this exception
throw;
}
catch( uno::Exception& )
{
// no action should be done
}
}
}
// --------------------------------------------------------
void SAL_CALL OLockListener::notifyClosing( const lang::EventObject& aEvent )
throw (uno::RuntimeException)
{
::osl::ResettableMutexGuard aGuard( m_aMutex );
// object is closed, no reason to listen
if ( aEvent.Source == m_xInstance )
{
uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( aEvent.Source, uno::UNO_QUERY );
if ( xCloseBroadcaster.is() )
{
xCloseBroadcaster->removeCloseListener( static_cast< util::XCloseListener* >( this ) );
m_nMode &= ~embed::Actions::PREVENT_CLOSE;
if ( !m_nMode )
{
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.clear();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
}
}
}
}
// XTerminateListener
// --------------------------------------------------------
void SAL_CALL OLockListener::queryTermination( const lang::EventObject& aEvent )
throw (frame::TerminationVetoException, uno::RuntimeException)
{
::osl::ResettableMutexGuard aGuard( m_aMutex );
if ( aEvent.Source == m_xInstance && ( m_nMode & embed::Actions::PREVENT_TERMINATION ) )
{
try
{
uno::Reference< embed::XActionsApproval > xApprove = m_xApproval;
// unlock the mutex here
aGuard.clear();
if ( xApprove.is() && xApprove->approveAction( embed::Actions::PREVENT_TERMINATION ) )
throw frame::TerminationVetoException();
}
catch( frame::TerminationVetoException& )
{
// rethrow this exception
throw;
}
catch( uno::Exception& )
{
// no action should be done
}
}
}
// --------------------------------------------------------
void SAL_CALL OLockListener::notifyTermination( const lang::EventObject& aEvent )
throw (uno::RuntimeException)
{
::osl::ResettableMutexGuard aGuard( m_aMutex );
// object is terminated, no reason to listen
if ( aEvent.Source == m_xInstance )
{
uno::Reference< frame::XDesktop > xDesktop( aEvent.Source, uno::UNO_QUERY );
if ( xDesktop.is() )
{
try
{
xDesktop->removeTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
m_nMode &= ~embed::Actions::PREVENT_TERMINATION;
if ( !m_nMode )
{
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.clear();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
}
}
catch( uno::Exception& )
{}
}
}
}
// XInitialization
// --------------------------------------------------------
sal_Bool OLockListener::Init()
{
::osl::ResettableMutexGuard aGuard( m_aMutex );
if ( m_bDisposed || m_bInitialized )
return sal_False;
try
{
if ( m_nMode & embed::Actions::PREVENT_CLOSE )
{
uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( m_xInstance, uno::UNO_QUERY_THROW );
xCloseBroadcaster->addCloseListener( static_cast< util::XCloseListener* >( this ) );
}
if ( m_nMode & embed::Actions::PREVENT_TERMINATION )
{
uno::Reference< frame::XDesktop > xDesktop( m_xInstance, uno::UNO_QUERY_THROW );
xDesktop->addTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
}
}
catch( uno::Exception& )
{
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.clear();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
throw;
}
m_bInitialized = sal_True;
return sal_True;
}
void createRegistryInfo_OInstanceLocker()
{
static ::comphelper::module::OAutoRegistration< OInstanceLocker > aAutoRegistration;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
