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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 <sal/config.h>
#include <cassert>
#include <comphelper/proxyaggregation.hxx>
#include <com/sun/star/reflection/ProxyFactory.hpp>
namespace comphelper
{
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::reflection;
OProxyAggregation::OProxyAggregation( const Reference< XComponentContext >& _rxContext )
:m_xContext( _rxContext )
{
}
void OProxyAggregation::baseAggregateProxyFor( const Reference< XInterface >& _rxComponent, oslInterlockedCount& _rRefCount,
::cppu::OWeakObject& _rDelegator )
{
// first a factory for the proxy
Reference< XProxyFactory > xFactory = ProxyFactory::create( m_xContext );
// then the proxy itself
{ // i36686 OJ: achieve the destruction of the temporary -> otherwise it leads to _rRefCount -= 2
m_xProxyAggregate = xFactory->createProxy( _rxComponent );
}
if ( m_xProxyAggregate.is() )
m_xProxyAggregate->queryAggregation( cppu::UnoType<decltype(m_xProxyTypeAccess)>::get() ) >>= m_xProxyTypeAccess;
// aggregate the proxy
osl_atomic_increment( &_rRefCount );
if ( m_xProxyAggregate.is() )
{
// At this point in time, the proxy has a ref count of exactly two - in m_xControlContextProxy,
// and in m_xProxyTypeAccess.
// Remember to _not_ reset these members unless the delegator of the proxy has been reset, too!
m_xProxyAggregate->setDelegator( _rDelegator );
}
osl_atomic_decrement( &_rRefCount );
}
Any SAL_CALL OProxyAggregation::queryAggregation( const Type& _rType )
{
return m_xProxyAggregate.is() ? m_xProxyAggregate->queryAggregation( _rType ) : Any();
}
Sequence< Type > SAL_CALL OProxyAggregation::getTypes( )
{
Sequence< Type > aTypes;
if ( m_xProxyAggregate.is() )
{
if ( m_xProxyTypeAccess.is() )
aTypes = m_xProxyTypeAccess->getTypes();
}
return aTypes;
}
OProxyAggregation::~OProxyAggregation()
{
if ( m_xProxyAggregate.is() )
m_xProxyAggregate->setDelegator( nullptr );
m_xProxyAggregate.clear();
m_xProxyTypeAccess.clear();
// this should remove the _two_only_ "real" references (means not delegated to
// ourself) to this proxy, and thus delete it
}
OComponentProxyAggregationHelper::OComponentProxyAggregationHelper( const Reference< XComponentContext >& _rxContext,
::cppu::OBroadcastHelper& _rBHelper )
:OProxyAggregation( _rxContext )
,m_rBHelper( _rBHelper )
{
OSL_ENSURE( _rxContext.is(), "OComponentProxyAggregationHelper::OComponentProxyAggregationHelper: invalid arguments!" );
}
void OComponentProxyAggregationHelper::componentAggregateProxyFor(
const Reference< XComponent >& _rxComponent, oslInterlockedCount& _rRefCount,
::cppu::OWeakObject& _rDelegator )
{
OSL_ENSURE( _rxComponent.is(), "OComponentProxyAggregationHelper::componentAggregateProxyFor: invalid inner component!" );
m_xInner = _rxComponent;
// aggregate a proxy for the object
baseAggregateProxyFor( m_xInner.get(), _rRefCount, _rDelegator );
// add as event listener to the inner context, because we want to be notified of disposals
osl_atomic_increment( &_rRefCount );
{
if ( m_xInner.is() )
m_xInner->addEventListener( this );
}
osl_atomic_decrement( &_rRefCount );
}
Any SAL_CALL OComponentProxyAggregationHelper::queryInterface( const Type& _rType )
{
Any aReturn( BASE::queryInterface( _rType ) );
if ( !aReturn.hasValue() )
aReturn = OProxyAggregation::queryAggregation( _rType );
return aReturn;
}
IMPLEMENT_FORWARD_XTYPEPROVIDER2( OComponentProxyAggregationHelper, BASE, OProxyAggregation )
OComponentProxyAggregationHelper::~OComponentProxyAggregationHelper( )
{
OSL_ENSURE( m_rBHelper.bDisposed, "OComponentProxyAggregationHelper::~OComponentProxyAggregationHelper: you should dispose your derived class in the dtor, if necessary!" );
// if this asserts, add the following to your derived class dtor:
// if ( !m_rBHelper.bDisposed )
// {
// acquire(); // to prevent duplicate dtor calls
// dispose();
// }
m_xInner.clear();
}
void SAL_CALL OComponentProxyAggregationHelper::disposing( const EventObject& _rSource )
{
if ( _rSource.Source == m_xInner )
{ // it's our inner context which is dying -> dispose ourself
if ( !m_rBHelper.bDisposed && !m_rBHelper.bInDispose )
{ // (if necessary only, of course)
dispose();
}
}
}
void SAL_CALL OComponentProxyAggregationHelper::dispose()
{
::osl::MutexGuard aGuard( m_rBHelper.rMutex );
// dispose our inner context
// before we do this, remove ourself as listener - else in disposing( EventObject ), we
// would dispose ourself a second time
if ( m_xInner.is() )
{
m_xInner->removeEventListener( this );
m_xInner->dispose();
m_xInner.clear();
}
}
OComponentProxyAggregation::OComponentProxyAggregation( const Reference< XComponentContext >& _rxContext,
const Reference< XComponent >& _rxComponent )
:WeakComponentImplHelperBase( m_aMutex )
,OComponentProxyAggregationHelper( _rxContext, rBHelper )
{
OSL_ENSURE( _rxComponent.is(), "OComponentProxyAggregation::OComponentProxyAggregation: accessible is no XComponent!" );
if ( _rxComponent.is() )
componentAggregateProxyFor( _rxComponent, m_refCount, *this );
}
OComponentProxyAggregation::~OComponentProxyAggregation()
{
if ( !rBHelper.bDisposed )
{
acquire(); // to prevent duplicate dtor calls
dispose();
}
}
IMPLEMENT_FORWARD_XINTERFACE2( OComponentProxyAggregation, WeakComponentImplHelperBase, OComponentProxyAggregationHelper )
IMPLEMENT_GET_IMPLEMENTATION_ID( OComponentProxyAggregation )
Sequence< Type > SAL_CALL OComponentProxyAggregation::getTypes( )
{
return comphelper::concatSequences(
OComponentProxyAggregationHelper::getTypes(),
// append XComponent, coming from WeakComponentImplHelperBase
Sequence { cppu::UnoType<XComponent>::get() });
}
void SAL_CALL OComponentProxyAggregation::disposing( const EventObject& _rSource )
{
// Simply disambiguate---this is necessary for MSVC to distinguish
// "disposing(EventObject)" from "disposing()"; but it is also a good
// place to check for recursive calls that would be caused by an object
// being registered as an XEventListener at itself (cf. rhbz#928568):
assert(_rSource.Source != static_cast< cppu::OWeakObject * >(this));
OComponentProxyAggregationHelper::disposing( _rSource );
}
void SAL_CALL OComponentProxyAggregation::disposing()
{
// call the dispose-functionality of the base, which will dispose our aggregated component
OComponentProxyAggregationHelper::dispose();
}
void SAL_CALL OComponentProxyAggregation::dispose()
{
// simply disambiguate
WeakComponentImplHelperBase::dispose();
}
} // namespace comphelper
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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