256 lines
10 KiB
C++
256 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "OConnectionPointHelper.hxx"
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#include "OConnectionPointContainerHelper.hxx"
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//______________________________________________________________________________________________________________
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// namespaces
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//______________________________________________________________________________________________________________
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using namespace ::rtl ;
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using namespace ::osl ;
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using namespace ::cppu ;
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using namespace ::com::sun::star::uno ;
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using namespace ::com::sun::star::lang ;
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namespace unocontrols{
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//______________________________________________________________________________________________________________
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// construct/destruct
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//______________________________________________________________________________________________________________
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OConnectionPointHelper::OConnectionPointHelper(
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Mutex& aMutex ,
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OConnectionPointContainerHelper* pContainerImplementation ,
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Type aType
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) : m_aSharedMutex ( aMutex )
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, m_oContainerWeakReference ( pContainerImplementation )
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, m_pContainerImplementation ( pContainerImplementation )
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, m_aInterfaceType ( aType )
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{
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}
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OConnectionPointHelper::~OConnectionPointHelper()
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{
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}
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//____________________________________________________________________________________________________________
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// XInterface
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//____________________________________________________________________________________________________________
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Any SAL_CALL OConnectionPointHelper::queryInterface( const Type& aType ) throw( RuntimeException )
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{
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// Attention:
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// Don't use mutex or guard in this method!!! Is a method of XInterface.
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// Ask for my own supported interfaces ...
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Any aReturn ( ::cppu::queryInterface( aType ,
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static_cast< XConnectionPoint* > ( this )
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)
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);
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// If searched interface not supported by this class ...
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if ( !aReturn.hasValue() )
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{
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// ... ask baseclasses.
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aReturn = OWeakObject::queryInterface( aType );
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}
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return aReturn ;
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}
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//____________________________________________________________________________________________________________
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// XInterface
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//____________________________________________________________________________________________________________
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void SAL_CALL OConnectionPointHelper::acquire() throw()
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{
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// Attention:
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// Don't use mutex or guard in this method!!! Is a method of XInterface.
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// Forward to baseclass
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OWeakObject::acquire();
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}
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//____________________________________________________________________________________________________________
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// XInterface
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//____________________________________________________________________________________________________________
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void SAL_CALL OConnectionPointHelper::release() throw()
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{
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// Attention:
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// Don't use mutex or guard in this method!!! Is a method of XInterface.
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// Forward to baseclass
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OWeakObject::release();
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}
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//______________________________________________________________________________________________________________
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// XConnectionPoint
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//______________________________________________________________________________________________________________
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Type SAL_CALL OConnectionPointHelper::getConnectionType() throw( RuntimeException )
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{
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// Ready for multithreading
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MutexGuard aGuard( m_aSharedMutex );
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// Set default return value, if method failed.
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if ( impl_LockContainer() == sal_False )
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{
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// Container not exist! Its an runtime error.
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throw RuntimeException();
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}
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// If container reference valid, return right type of supported interfaces of THIS connectionpoint.
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Type aReturnType = m_aInterfaceType ;
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// Don't forget this!
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impl_UnlockContainer();
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return aReturnType;
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}
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//______________________________________________________________________________________________________________
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// XConnectionPoint
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//______________________________________________________________________________________________________________
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Reference< XConnectionPointContainer > SAL_CALL OConnectionPointHelper::getConnectionPointContainer() throw( RuntimeException )
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{
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// Ready for multithreading
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MutexGuard aGuard( m_aSharedMutex );
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// Convert weakreference to correct uno3-reference and return value. It can be NULL, if container destroyed!
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return Reference< XConnectionPointContainer >( m_oContainerWeakReference.get(), UNO_QUERY );
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}
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//______________________________________________________________________________________________________________
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// XConnectionPoint
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//______________________________________________________________________________________________________________
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void SAL_CALL OConnectionPointHelper::advise( const Reference< XInterface >& xListener ) throw( ListenerExistException ,
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InvalidListenerException ,
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RuntimeException )
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{
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// Ready for multithreading
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MutexGuard aGuard( m_aSharedMutex );
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// If type of listener not the same for this special container ...
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Any aCheckType = xListener->queryInterface( m_aInterfaceType );
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if ( aCheckType.hasValue() )
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{
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// ... throw an exception.
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throw InvalidListenerException();
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}
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// ListenerExistException is obsolete!?
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// Its the same container for XConnectionPointContainer and XConnectionPoint. But only here we must control, if a listener already exist!?
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// You can add a listener more then one time at XConnectionPointContainer, but here only one ...
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// Operation is permitted only, if reference to container is valid!
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if ( impl_LockContainer() == sal_False )
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{
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// Container not exist! Its an runtime error.
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throw RuntimeException();
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}
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// Forward it to OConnectionPointHelperContainer!
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m_pContainerImplementation->advise( m_aInterfaceType, xListener );
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// Don't forget this!
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impl_UnlockContainer();
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}
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//______________________________________________________________________________________________________________
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// XConnectionPoint
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//______________________________________________________________________________________________________________
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void SAL_CALL OConnectionPointHelper::unadvise( const Reference< XInterface >& xListener ) throw( RuntimeException )
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{
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// Ready for multithreading
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MutexGuard aGuard( m_aSharedMutex );
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// Operation is permitted only, if reference to container is valid!
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if ( impl_LockContainer() == sal_False )
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{
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// Container not exist! Its an runtime error.
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throw RuntimeException();
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}
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// Forward it to OConnectionPointHelperContainer!
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m_pContainerImplementation->unadvise( m_aInterfaceType, xListener );
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// Don't forget this!
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impl_UnlockContainer();
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}
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//______________________________________________________________________________________________________________
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// XConnectionPoint
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//______________________________________________________________________________________________________________
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Sequence< Reference< XInterface > > SAL_CALL OConnectionPointHelper::getConnections() throw( RuntimeException )
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{
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// Ready for multithreading
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MutexGuard aGuard( m_aSharedMutex );
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// Operation is permitted only, if reference to container is valid!
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if ( impl_LockContainer() == sal_False )
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{
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// Container not exist! Its an runtime error.
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throw RuntimeException();
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}
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// Set default return value, if method failed.
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Sequence< Reference< XInterface > > seqReturnConnections = Sequence< Reference< XInterface > >();
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// Get reference to private member of OConnectionPointHelperContainer!
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OMultiTypeInterfaceContainerHelper& aSharedContainer = m_pContainerImplementation->impl_getMultiTypeContainer();
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// Get pointer to specialized container which hold all interfaces of searched type.
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OInterfaceContainerHelper* pSpecialContainer = aSharedContainer.getContainer( m_aInterfaceType );
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// Get elements of searched type, if somelse exist.
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if ( pSpecialContainer != NULL )
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{
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seqReturnConnections = pSpecialContainer->getElements();
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}
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// Don't forget this!
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impl_UnlockContainer();
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return seqReturnConnections;
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}
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//______________________________________________________________________________________________________________
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// private method
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//______________________________________________________________________________________________________________
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sal_Bool OConnectionPointHelper::impl_LockContainer()
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{
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// Convert weakreference to hard uno3-reference and return state.
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// If this reference different from NULL, there exist a hard reference to container. Container-instance can't be destroyed.
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// Don't forget to "unlock" this reference!
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m_xLock = m_oContainerWeakReference.get();
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return m_xLock.is();
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}
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//______________________________________________________________________________________________________________
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// private method
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//______________________________________________________________________________________________________________
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void OConnectionPointHelper::impl_UnlockContainer()
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{
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// Free hard uno3-reference to container.
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// see also "impl_LockContainer()"
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m_xLock.clear();
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}
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} // namespace unocontrols
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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