212 lines
6.9 KiB
C++
212 lines
6.9 KiB
C++
/*************************************************************************
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*
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* $RCSfile: component.cxx,v $
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*
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* $Revision: 1.1.1.1 $
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*
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* last change: $Author: hr $ $Date: 2000-09-18 15:26:10 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#ifndef _OSL_DIAGNOSE_H_
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#include <osl/diagnose.h>
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#endif
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#ifndef _CPPUHELPER_COMPONENT_HXX_
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#include <cppuhelper/component.hxx>
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#endif
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#ifndef _CPPUHELPER_QUERYINTERFACE_HXX_
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#include <cppuhelper/queryinterface.hxx>
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#endif
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using namespace osl;
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using namespace com::sun::star::uno;
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using namespace com::sun::star::lang;
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using namespace com::sun::star::lang;
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namespace cppu
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{
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// ----------------------------------------------------
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// class OComponentHelper
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// ----------------------------------------------------
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OComponentHelper::OComponentHelper( Mutex & rMutex )
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: rBHelper( rMutex )
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{
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}
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/**
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* Call dispose if not previous called.
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*/
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OComponentHelper::~OComponentHelper()
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{
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}
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// XInterface
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void OComponentHelper::release() throw()
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{
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Reference<XInterface > x( xDelegator );
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if (! x.is())
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{
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if (osl_decrementInterlockedCount( &m_refCount ) == 0)
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{
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if (! rBHelper.bDisposed)
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{
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Reference<XInterface > xHoldAlive( *this );
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// First dispose
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try
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{
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dispose();
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}
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catch(::com::sun::star::uno::Exception&)
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{
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// release should not throw exceptions
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}
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// only the alive ref holds the object
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OSL_ASSERT( m_refCount == 1 );
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// destroy the object if xHoldAlive decrement the refcount to 0
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return;
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}
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}
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// restore the reference count
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osl_incrementInterlockedCount( &m_refCount );
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}
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OWeakAggObject::release();
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}
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// XComponent
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void OComponentHelper::disposing()
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{
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}
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// XComponent
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void OComponentHelper::dispose()
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throw(::com::sun::star::uno::RuntimeException)
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{
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// An frequently programming error is to release the last
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// reference to this object in the disposing message.
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// Make it rubust, hold a self Reference.
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Reference<XComponent > xSelf( this );
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// Guard dispose against multible threading
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// Remark: It is an error to call dispose more than once
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sal_Bool bDoDispose = sal_False;
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{
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MutexGuard aGuard( rBHelper.rMutex );
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if( !rBHelper.bDisposed && !rBHelper.bInDispose )
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{
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// only one call go into this section
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rBHelper.bInDispose = sal_True;
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bDoDispose = sal_True;
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}
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}
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OSL_ENSHURE( bDoDispose, "dispose called twice" );
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// Do not hold the mutex because we are broadcasting
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if( bDoDispose )
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{
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// Create an event with this as sender
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try
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{
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Reference<XInterface > xSource( Reference<XInterface >::query( (XComponent *)this ) );
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EventObject aEvt;
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aEvt.Source = xSource;
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// inform all listeners to release this object
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// The listener container are automaticly cleared
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rBHelper.aLC.disposeAndClear( aEvt );
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// notify subclasses to do their dispose
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disposing();
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}
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catch(::com::sun::star::uno::Exception& e)
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{
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// catch exception and throw again but signal that
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// the object was disposed. Dispose should be called
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// only once.
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rBHelper.bDisposed = sal_True;
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rBHelper.bInDispose = sal_False;
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throw e;
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}
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// the values bDispose and bInDisposing must set in this order.
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// No multithread call overcome the "!rBHelper.bDisposed && !rBHelper.bInDispose" guard.
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rBHelper.bDisposed = sal_True;
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rBHelper.bInDispose = sal_False;
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}
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}
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// XComponent
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void OComponentHelper::addEventListener(const Reference<XEventListener > & rxListener)
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throw(::com::sun::star::uno::RuntimeException)
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{
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MutexGuard aGuard( rBHelper.rMutex );
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OSL_ENSHURE( !rBHelper.bInDispose, "do not add listeners in the dispose call" );
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OSL_ENSHURE( !rBHelper.bDisposed, "object is disposed" );
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if( !rBHelper.bInDispose && !rBHelper.bDisposed )
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// only add listeners if you are not disposed
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rBHelper.aLC.addInterface( ::getCppuType( (Reference< XEventListener > *)0 ), rxListener );
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}
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// XComponent
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void OComponentHelper::removeEventListener(const Reference<XEventListener > & rxListener)
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throw(::com::sun::star::uno::RuntimeException)
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{
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MutexGuard aGuard( rBHelper.rMutex );
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OSL_ENSHURE( !rBHelper.bDisposed, "object is disposed" );
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// all listeners are automaticly released in a dispose call
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if( !rBHelper.bInDispose && !rBHelper.bDisposed )
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rBHelper.aLC.removeInterface( ::getCppuType( (Reference< XEventListener > *)0 ), rxListener );
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}
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}
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