office-gobmx/cppuhelper/source/component.cxx

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/*************************************************************************
*
* $RCSfile: component.cxx,v $
*
* $Revision: 1.9 $
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*
* last change: $Author: vg $ $Date: 2003-04-15 16:34:12 $
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*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (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.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef _RTL_STRING_HXX_
#include <rtl/string.hxx>
#endif
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#ifndef _OSL_DIAGNOSE_H_
#include <osl/diagnose.h>
#endif
#ifndef _CPPUHELPER_COMPONENT_HXX_
#include <cppuhelper/component.hxx>
#endif
#ifndef _CPPUHELPER_QUERYINTERFACE_HXX_
#include <cppuhelper/queryinterface.hxx>
#endif
#ifndef _CPPUHELPER_TYPEPROVIDER_HXX_
#include <cppuhelper/typeprovider.hxx>
#endif
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using namespace osl;
using namespace rtl;
using namespace com::sun::star;
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using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
namespace cppu
{
// ----------------------------------------------------
// class OComponentHelper
// ----------------------------------------------------
OComponentHelper::OComponentHelper( Mutex & rMutex ) SAL_THROW( () )
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: rBHelper( rMutex )
{
}
OComponentHelper::~OComponentHelper() SAL_THROW( (RuntimeException) )
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{
}
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();
}
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void OComponentHelper::release() throw()
{
Reference<XInterface > x( xDelegator );
if (! x.is())
{
if (osl_decrementInterlockedCount( &m_refCount ) == 0)
{
if (! rBHelper.bDisposed)
{
Reference<XInterface > xHoldAlive( *this );
// First dispose
try
{
dispose();
}
catch (::com::sun::star::uno::RuntimeException & exc)
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{
// release should not throw exceptions
#if OSL_DEBUG_LEVEL > 0
OString msg( OUStringToOString( exc.Message, RTL_TEXTENCODING_ASCII_US ) );
OSL_ENSURE( 0, msg.getStr() );
#endif
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}
// 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();
}
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// 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
{
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(::com::sun::star::uno::RuntimeException&)
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{
// catch exception and throw again but signal that
// the object was disposed. Dispose should be called
// only once.
MutexGuard aGuard( rBHelper.rMutex );
rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
throw;
}
catch (::com::sun::star::uno::Exception & exc)
{
MutexGuard aGuard( rBHelper.rMutex );
rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
throw RuntimeException(
OUString( RTL_CONSTASCII_USTRINGPARAM("unexpected UNO exception caught: ") ) +
exc.Message, Reference< XInterface >() );
}
catch (...)
{
MutexGuard aGuard( rBHelper.rMutex );
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rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
throw RuntimeException(
OUString( RTL_CONSTASCII_USTRINGPARAM("unexpected non-UNO exception caught: ") ),
Reference< XInterface >() );
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}
// the values bDispose and bInDisposing must set in this order.
MutexGuard aGuard( rBHelper.rMutex );
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rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
}
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" );
}
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}
// XComponent
void OComponentHelper::addEventListener(
const Reference<XEventListener > & rxListener )
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throw(::com::sun::star::uno::RuntimeException)
{
ClearableMutexGuard aGuard( rBHelper.rMutex );
if (rBHelper.bDisposed || rBHelper.bInDispose)
{
aGuard.clear();
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Reference< XInterface > x( (XComponent *)this, UNO_QUERY );
rxListener->disposing( EventObject( x ) );
}
else
{
rBHelper.addListener( ::getCppuType( &rxListener ) , rxListener );
}
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}
// XComponent
void OComponentHelper::removeEventListener(
const Reference<XEventListener > & rxListener )
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throw(::com::sun::star::uno::RuntimeException)
{
rBHelper.removeListener( ::getCppuType( &rxListener ) , rxListener );
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}
}