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Diffstat (limited to 'cppuhelper/source/component.cxx')
| -rw-r--r-- | cppuhelper/source/component.cxx | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/cppuhelper/source/component.cxx b/cppuhelper/source/component.cxx new file mode 100644 index 000000000000..1e21d6e7a554 --- /dev/null +++ b/cppuhelper/source/component.cxx @@ -0,0 +1,212 @@ +/************************************************************************* + * + * $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 ); +} + +} + |