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/*************************************************************************
*
* $RCSfile: component.cxx,v $
*
* $Revision: 1.1.1.1 $
*
* last change: $Author: hr $ $Date: 2000-09-18 15:26:10 $
*
* 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 _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
using namespace osl;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
using namespace com::sun::star::lang;
namespace cppu
{
// ----------------------------------------------------
// class OComponentHelper
// ----------------------------------------------------
OComponentHelper::OComponentHelper( Mutex & rMutex )
: rBHelper( rMutex )
{
}
/**
* Call dispose if not previous called.
*/
OComponentHelper::~OComponentHelper()
{
}
// XInterface
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::Exception&)
{
// release should not throw exceptions
}
// 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();
}
// 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;
}
}
OSL_ENSHURE( bDoDispose, "dispose called twice" );
// 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::Exception& e)
{
// catch exception and throw again but signal that
// the object was disposed. Dispose should be called
// only once.
rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
throw e;
}
// the values bDispose and bInDisposing must set in this order.
// No multithread call overcome the "!rBHelper.bDisposed && !rBHelper.bInDispose" guard.
rBHelper.bDisposed = sal_True;
rBHelper.bInDispose = sal_False;
}
}
// XComponent
void OComponentHelper::addEventListener(const Reference<XEventListener > & rxListener)
throw(::com::sun::star::uno::RuntimeException)
{
MutexGuard aGuard( rBHelper.rMutex );
OSL_ENSHURE( !rBHelper.bInDispose, "do not add listeners in the dispose call" );
OSL_ENSHURE( !rBHelper.bDisposed, "object is disposed" );
if( !rBHelper.bInDispose && !rBHelper.bDisposed )
// only add listeners if you are not disposed
rBHelper.aLC.addInterface( ::getCppuType( (Reference< XEventListener > *)0 ), rxListener );
}
// XComponent
void OComponentHelper::removeEventListener(const Reference<XEventListener > & rxListener)
throw(::com::sun::star::uno::RuntimeException)
{
MutexGuard aGuard( rBHelper.rMutex );
OSL_ENSHURE( !rBHelper.bDisposed, "object is disposed" );
// all listeners are automaticly released in a dispose call
if( !rBHelper.bInDispose && !rBHelper.bDisposed )
rBHelper.aLC.removeInterface( ::getCppuType( (Reference< XEventListener > *)0 ), rxListener );
}
}
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