251 lines
8 KiB
C++
251 lines
8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org 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
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include <rtl/string.hxx>
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#include <osl/diagnose.h>
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#include <cppuhelper/component.hxx>
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#include <cppuhelper/queryinterface.hxx>
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#include <cppuhelper/typeprovider.hxx>
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#include "com/sun/star/uno/RuntimeException.hpp"
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using namespace osl;
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using namespace com::sun::star;
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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 ::rtl::OUString;
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using ::rtl::OString;
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using ::rtl::OUStringToOString;
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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 ) SAL_THROW( () )
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: rBHelper( rMutex )
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{
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}
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OComponentHelper::~OComponentHelper() SAL_THROW( (RuntimeException) )
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{
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}
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Any OComponentHelper::queryInterface( Type const & rType ) throw (RuntimeException)
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{
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return OWeakAggObject::queryInterface( rType );
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}
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Any OComponentHelper::queryAggregation( Type const & rType ) throw (RuntimeException)
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{
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if (rType == ::getCppuType( (Reference< lang::XComponent > const *)0 ))
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{
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void * p = static_cast< lang::XComponent * >( this );
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return Any( &p, rType );
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}
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else if (rType == ::getCppuType( (Reference< lang::XTypeProvider > const *)0 ))
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{
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void * p = static_cast< lang::XTypeProvider * >( this );
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return Any( &p, rType );
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}
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return OWeakAggObject::queryAggregation( rType );
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}
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void OComponentHelper::acquire() throw ()
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{
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OWeakAggObject::acquire();
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}
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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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// *before* again incrementing our ref count, ensure that our weak connection point
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// will not create references to us anymore (via XAdapter::queryAdapted)
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disposeWeakConnectionPoint();
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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::RuntimeException & exc)
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{
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// release should not throw exceptions
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#if OSL_DEBUG_LEVEL > 0
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OString msg( OUStringToOString( exc.Message, RTL_TEXTENCODING_ASCII_US ) );
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OSL_FAIL( msg.getStr() );
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#else
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(void) exc; // avoid warning about unused variable
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#endif
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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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Sequence< Type > OComponentHelper::getTypes() throw (RuntimeException)
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{
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static OTypeCollection * s_pTypes = 0;
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if (! s_pTypes)
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{
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MutexGuard aGuard( Mutex::getGlobalMutex() );
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if (! s_pTypes)
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{
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static OTypeCollection s_aTypes(
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::getCppuType( (const Reference< lang::XComponent > *)0 ),
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::getCppuType( (const Reference< lang::XTypeProvider > *)0 ),
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::getCppuType( (const Reference< XAggregation > *)0 ),
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::getCppuType( (const Reference< XWeak > *)0 ) );
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s_pTypes = &s_aTypes;
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}
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}
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return s_pTypes->getTypes();
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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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// 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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try
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{
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Reference<XInterface > xSource(
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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 (...)
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{
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MutexGuard aGuard( rBHelper.rMutex );
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// bDispose and bInDisposing must be set in this order:
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rBHelper.bDisposed = sal_True;
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rBHelper.bInDispose = sal_False;
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throw;
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}
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MutexGuard aGuard( rBHelper.rMutex );
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// bDispose and bInDisposing must be set in this order:
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rBHelper.bDisposed = sal_True;
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rBHelper.bInDispose = sal_False;
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}
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catch (RuntimeException &)
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{
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throw;
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}
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catch (Exception & exc)
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{
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throw RuntimeException(
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OUString( RTL_CONSTASCII_USTRINGPARAM(
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"unexpected UNO exception caught: ") ) +
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exc.Message, Reference< XInterface >() );
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}
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}
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else
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{
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// in a multithreaded environment, it can't be avoided
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// that dispose is called twice.
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// However this condition is traced, because it MAY indicate an error.
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OSL_TRACE( "OComponentHelper::dispose() - dispose called twice" );
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}
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}
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// XComponent
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void OComponentHelper::addEventListener(
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const Reference<XEventListener > & rxListener )
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throw(::com::sun::star::uno::RuntimeException)
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{
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ClearableMutexGuard aGuard( rBHelper.rMutex );
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if (rBHelper.bDisposed || rBHelper.bInDispose)
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{
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aGuard.clear();
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Reference< XInterface > x( (XComponent *)this, UNO_QUERY );
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rxListener->disposing( EventObject( x ) );
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}
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else
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{
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rBHelper.addListener( ::getCppuType( &rxListener ) , rxListener );
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}
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}
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// XComponent
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void OComponentHelper::removeEventListener(
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const Reference<XEventListener > & rxListener )
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throw(::com::sun::star::uno::RuntimeException)
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{
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rBHelper.removeListener( ::getCppuType( &rxListener ) , rxListener );
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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