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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include <rtl/string.hxx>
#include <osl/diagnose.h>
#include <cppuhelper/component.hxx>
#include <cppuhelper/queryinterface.hxx>
#include <cppuhelper/typeprovider.hxx>
#include "com/sun/star/uno/RuntimeException.hpp"
using namespace osl;
using namespace com::sun::star;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
using ::rtl::OUString;
using ::rtl::OString;
using ::rtl::OUStringToOString;
namespace cppu
{
// ----------------------------------------------------
// class OComponentHelper
// ----------------------------------------------------
OComponentHelper::OComponentHelper( Mutex & rMutex ) SAL_THROW(())
: rBHelper( rMutex )
{
}
OComponentHelper::~OComponentHelper() SAL_THROW( (RuntimeException) )
{
}
Any OComponentHelper::queryInterface( Type const & rType ) throw (RuntimeException)
{
return OWeakAggObject::queryInterface( rType );
}
Any OComponentHelper::queryAggregation( Type const & rType ) throw (RuntimeException)
{
if (rType == ::getCppuType( (Reference< lang::XComponent > const *)0 ))
{
void * p = static_cast< lang::XComponent * >( this );
return Any( &p, rType );
}
else if (rType == ::getCppuType( (Reference< lang::XTypeProvider > const *)0 ))
{
void * p = static_cast< lang::XTypeProvider * >( this );
return Any( &p, rType );
}
return OWeakAggObject::queryAggregation( rType );
}
void OComponentHelper::acquire() throw ()
{
OWeakAggObject::acquire();
}
void OComponentHelper::release() throw()
{
Reference<XInterface > x( xDelegator );
if (! x.is())
{
if (osl_decrementInterlockedCount( &m_refCount ) == 0)
{
if (! rBHelper.bDisposed)
{
// *before* again incrementing our ref count, ensure that our weak connection point
// will not create references to us anymore (via XAdapter::queryAdapted)
disposeWeakConnectionPoint();
Reference<XInterface > xHoldAlive( *this );
// First dispose
try
{
dispose();
}
catch (::com::sun::star::uno::RuntimeException & exc)
{
// release should not throw exceptions
#if OSL_DEBUG_LEVEL > 0
OString msg( OUStringToOString( exc.Message, RTL_TEXTENCODING_ASCII_US ) );
OSL_FAIL( msg.getStr() );
#else
(void) exc; // avoid warning about unused variable
#endif
}
// only the alive ref holds the object
OSL_ASSERT( m_refCount == 1 );
// destroy the object if xHoldAlive decrement the refcount to 0
return;
}
}
// restore the reference count
osl_incrementInterlockedCount( &m_refCount );
}
OWeakAggObject::release();
}
Sequence< Type > OComponentHelper::getTypes() throw (RuntimeException)
{
static OTypeCollection * s_pTypes = 0;
if (! s_pTypes)
{
MutexGuard aGuard( Mutex::getGlobalMutex() );
if (! s_pTypes)
{
static OTypeCollection s_aTypes(
::getCppuType( (const Reference< lang::XComponent > *)0 ),
::getCppuType( (const Reference< lang::XTypeProvider > *)0 ),
::getCppuType( (const Reference< XAggregation > *)0 ),
::getCppuType( (const Reference< XWeak > *)0 ) );
s_pTypes = &s_aTypes;
}
}
return s_pTypes->getTypes();
}
// XComponent
void OComponentHelper::disposing()
{
}
// XComponent
void OComponentHelper::dispose()
throw(::com::sun::star::uno::RuntimeException)
{
// An frequently programming error is to release the last
// reference to this object in the disposing message.
// Make it rubust, hold a self Reference.
Reference<XComponent > xSelf( this );
// Guard dispose against multible threading
// Remark: It is an error to call dispose more than once
sal_Bool bDoDispose = sal_False;
{
MutexGuard aGuard( rBHelper.rMutex );
if( !rBHelper.bDisposed && !rBHelper.bInDispose )
{
// only one call go into this section
rBHelper.bInDispose = sal_True;
bDoDispose = sal_True;
}
}
// Do not hold the mutex because we are broadcasting
if( bDoDispose )
{
// Create an event with this as sender
try
{
try
{
Reference<XInterface > xSource(
Reference<XInterface >::query( (XComponent *)this ) );
EventObject aEvt;
aEvt.Source = xSource;
// inform all listeners to release this object
// The listener container are automaticly cleared
rBHelper.aLC.disposeAndClear( aEvt );
// notify subclasses to do their dispose
disposing();
}
catch (...)
{
MutexGuard aGuard( rBHelper.rMutex );
// bDispose and bInDisposing must be set in this order:
rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
throw;
}
MutexGuard aGuard( rBHelper.rMutex );
// bDispose and bInDisposing must be set in this order:
rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
}
catch (RuntimeException &)
{
throw;
}
catch (Exception & exc)
{
throw RuntimeException(
OUString( RTL_CONSTASCII_USTRINGPARAM(
"unexpected UNO exception caught: ") ) +
exc.Message, Reference< XInterface >() );
}
}
else
{
// in a multithreaded environment, it can't be avoided
// that dispose is called twice.
// However this condition is traced, because it MAY indicate an error.
OSL_TRACE( "OComponentHelper::dispose() - dispose called twice" );
}
}
// XComponent
void OComponentHelper::addEventListener(
const Reference<XEventListener > & rxListener )
throw(::com::sun::star::uno::RuntimeException)
{
ClearableMutexGuard aGuard( rBHelper.rMutex );
if (rBHelper.bDisposed || rBHelper.bInDispose)
{
aGuard.clear();
Reference< XInterface > x( (XComponent *)this, UNO_QUERY );
rxListener->disposing( EventObject( x ) );
}
else
{
rBHelper.addListener( ::getCppuType( &rxListener ) , rxListener );
}
}
// XComponent
void OComponentHelper::removeEventListener(
const Reference<XEventListener > & rxListener )
throw(::com::sun::star::uno::RuntimeException)
{
rBHelper.removeListener( ::getCppuType( &rxListener ) , rxListener );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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