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Diffstat (limited to 'comphelper/source/container/interfacecontainer2.cxx')
| -rw-r--r-- | comphelper/source/container/interfacecontainer2.cxx | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/comphelper/source/container/interfacecontainer2.cxx b/comphelper/source/container/interfacecontainer2.cxx new file mode 100644 index 0000000000..df1c9e0e69 --- /dev/null +++ b/comphelper/source/container/interfacecontainer2.cxx @@ -0,0 +1,424 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 . + */ + + +#include <comphelper/interfacecontainer2.hxx> +#include <comphelper/multicontainer2.hxx> + +#include <o3tl/safeint.hxx> +#include <osl/diagnose.h> +#include <osl/mutex.hxx> + +#include <memory> + +#include <com/sun/star/lang/XEventListener.hpp> + + +using namespace osl; +using namespace com::sun::star::uno; +using namespace com::sun::star::lang; + +namespace comphelper +{ + +OInterfaceIteratorHelper2::OInterfaceIteratorHelper2( OInterfaceContainerHelper2 & rCont_ ) + : rCont( rCont_ ) +{ + MutexGuard aGuard( rCont.rMutex ); + if( rCont.bInUse ) + // worst case, two iterators at the same time + rCont.copyAndResetInUse(); + bIsList = rCont_.bIsList; + aData = rCont_.aData; + if( bIsList ) + { + rCont.bInUse = true; + nRemain = aData.pAsVector->size(); + } + else if( aData.pAsInterface ) + { + aData.pAsInterface->acquire(); + nRemain = 1; + } + else + nRemain = 0; +} + +OInterfaceIteratorHelper2::~OInterfaceIteratorHelper2() +{ + bool bShared; + { + MutexGuard aGuard( rCont.rMutex ); + // bResetInUse protect the iterator against recursion + bShared = aData.pAsVector == rCont.aData.pAsVector && rCont.bIsList; + if( bShared ) + { + OSL_ENSURE( rCont.bInUse, "OInterfaceContainerHelper2 must be in use" ); + rCont.bInUse = false; + } + } + + if( !bShared ) + { + if( bIsList ) + // Sequence owned by the iterator + delete aData.pAsVector; + else if( aData.pAsInterface ) + // Interface is acquired by the iterator + aData.pAsInterface->release(); + } +} + +XInterface * OInterfaceIteratorHelper2::next() +{ + if( nRemain ) + { + nRemain--; + if( bIsList ) + return (*aData.pAsVector)[nRemain].get(); + else if( aData.pAsInterface ) + return aData.pAsInterface; + } + // exception + return nullptr; +} + +void OInterfaceIteratorHelper2::remove() +{ + if( bIsList ) + { + OSL_ASSERT( nRemain >= 0 && + o3tl::make_unsigned(nRemain) < aData.pAsVector->size() ); + rCont.removeInterface( (*aData.pAsVector)[nRemain] ); + } + else + { + OSL_ASSERT( 0 == nRemain ); + rCont.removeInterface( aData.pAsInterface ); + } +} + +OInterfaceContainerHelper2::OInterfaceContainerHelper2( Mutex & rMutex_ ) + : rMutex( rMutex_ ) + , bInUse( false ) + , bIsList( false ) +{ +} + +OInterfaceContainerHelper2::~OInterfaceContainerHelper2() +{ + OSL_ENSURE( !bInUse, "~OInterfaceContainerHelper2 but is in use" ); + if( bIsList ) + delete aData.pAsVector; + else if( aData.pAsInterface ) + aData.pAsInterface->release(); +} + +sal_Int32 OInterfaceContainerHelper2::getLength() const +{ + MutexGuard aGuard( rMutex ); + if( bIsList ) + return aData.pAsVector->size(); + else if( aData.pAsInterface ) + return 1; + return 0; +} + +std::vector< Reference<XInterface> > OInterfaceContainerHelper2::getElements() const +{ + std::vector< Reference<XInterface> > rVec; + MutexGuard aGuard( rMutex ); + if( bIsList ) + rVec = *aData.pAsVector; + else if( aData.pAsInterface ) + { + rVec.emplace_back( aData.pAsInterface ); + } + return rVec; +} + +void OInterfaceContainerHelper2::copyAndResetInUse() +{ + OSL_ENSURE( bInUse, "OInterfaceContainerHelper2 not in use" ); + if( bInUse ) + { + // this should be the worst case. If an iterator is active + // and a new Listener is added. + if( bIsList ) + aData.pAsVector = new std::vector< Reference< XInterface > >( *aData.pAsVector ); + else if( aData.pAsInterface ) + aData.pAsInterface->acquire(); + + bInUse = false; + } +} + +sal_Int32 OInterfaceContainerHelper2::addInterface( const Reference<XInterface> & rListener ) +{ + OSL_ASSERT( rListener.is() ); + if ( !rListener.is() ) + return 0; + + MutexGuard aGuard( rMutex ); + if( bInUse ) + copyAndResetInUse(); + + if( bIsList ) + { + aData.pAsVector->push_back( rListener ); + return aData.pAsVector->size(); + } + else if( aData.pAsInterface ) + { + std::vector< Reference< XInterface > > * pVec = new std::vector< Reference< XInterface > >( 2 ); + (*pVec)[0] = aData.pAsInterface; + (*pVec)[1] = rListener; + aData.pAsInterface->release(); + aData.pAsVector = pVec; + bIsList = true; + return 2; + } + else + { + aData.pAsInterface = rListener.get(); + if( rListener.is() ) + rListener->acquire(); + return 1; + } +} + +sal_Int32 OInterfaceContainerHelper2::removeInterface( const Reference<XInterface> & rListener ) +{ + OSL_ASSERT( rListener.is() ); + MutexGuard aGuard( rMutex ); + if( bInUse ) + copyAndResetInUse(); + + if( bIsList ) + { + // It is not valid to compare the pointer directly, but it's faster. + auto it = std::find_if(aData.pAsVector->begin(), aData.pAsVector->end(), + [&rListener](const css::uno::Reference<css::uno::XInterface>& rItem) { + return rItem.get() == rListener.get(); }); + + // interface not found, use the correct compare method + if (it == aData.pAsVector->end()) + it = std::find(aData.pAsVector->begin(), aData.pAsVector->end(), rListener); + + if (it != aData.pAsVector->end()) + aData.pAsVector->erase(it); + + if( aData.pAsVector->size() == 1 ) + { + XInterface * p = (*aData.pAsVector)[0].get(); + p->acquire(); + delete aData.pAsVector; + aData.pAsInterface = p; + bIsList = false; + return 1; + } + else + return aData.pAsVector->size(); + } + else if( aData.pAsInterface && Reference<XInterface>( aData.pAsInterface ) == rListener ) + { + aData.pAsInterface->release(); + aData.pAsInterface = nullptr; + } + return aData.pAsInterface ? 1 : 0; +} + +Reference<XInterface> OInterfaceContainerHelper2::getInterface( sal_Int32 nIndex ) const +{ + MutexGuard aGuard( rMutex ); + + if( bIsList ) + return (*aData.pAsVector)[nIndex]; + else if( aData.pAsInterface ) + { + if (nIndex == 0) + return aData.pAsInterface; + } + throw std::out_of_range("index out of range"); +} + +void OInterfaceContainerHelper2::disposeAndClear( const EventObject & rEvt ) +{ + ClearableMutexGuard aGuard( rMutex ); + OInterfaceIteratorHelper2 aIt( *this ); + // Release container, in case new entries come while disposing + OSL_ENSURE( !bIsList || bInUse, "OInterfaceContainerHelper2 not in use" ); + if( !bIsList && aData.pAsInterface ) + aData.pAsInterface->release(); + // set the member to null, use the iterator to delete the values + aData.pAsInterface = nullptr; + bIsList = false; + bInUse = false; + aGuard.clear(); + while( aIt.hasMoreElements() ) + { + try + { + Reference<XEventListener > xLst( aIt.next(), UNO_QUERY ); + if( xLst.is() ) + xLst->disposing( rEvt ); + } + catch ( RuntimeException & ) + { + // be robust, if e.g. a remote bridge has disposed already. + // there is no way to delegate the error to the caller :o(. + } + } +} + + +void OInterfaceContainerHelper2::clear() +{ + MutexGuard aGuard( rMutex ); + // Release container, in case new entries come while disposing + OSL_ENSURE( !bIsList || bInUse, "OInterfaceContainerHelper2 not in use" ); + if (bInUse) + copyAndResetInUse(); + if (bIsList) + delete aData.pAsVector; + else if (aData.pAsInterface) + aData.pAsInterface->release(); + aData.pAsInterface = nullptr; + bIsList = false; +} + + + +// specialized class for type + +OMultiTypeInterfaceContainerHelper2::OMultiTypeInterfaceContainerHelper2( Mutex & rMutex_ ) + : rMutex( rMutex_ ) +{ +} + +OMultiTypeInterfaceContainerHelper2::~OMultiTypeInterfaceContainerHelper2() +{ +} + +std::vector< css::uno::Type > OMultiTypeInterfaceContainerHelper2::getContainedTypes() const +{ + ::osl::MutexGuard aGuard( rMutex ); + std::vector< Type > aInterfaceTypes; + aInterfaceTypes.reserve( m_aMap.size() ); + for (const auto& rItem : m_aMap) + { + // are interfaces added to this container? + if( rItem.second->getLength() ) + // yes, put the type in the array + aInterfaceTypes.push_back(rItem.first); + } + return aInterfaceTypes; +} + +OMultiTypeInterfaceContainerHelper2::t_type2ptr::iterator OMultiTypeInterfaceContainerHelper2::findType(const Type & rKey ) +{ + return std::find_if(m_aMap.begin(), m_aMap.end(), + [&rKey](const t_type2ptr::value_type& rItem) { return rItem.first == rKey; }); +} + +OMultiTypeInterfaceContainerHelper2::t_type2ptr::const_iterator OMultiTypeInterfaceContainerHelper2::findType(const Type & rKey ) const +{ + return std::find_if(m_aMap.begin(), m_aMap.end(), + [&rKey](const t_type2ptr::value_type& rItem) { return rItem.first == rKey; }); +} + +OInterfaceContainerHelper2 * OMultiTypeInterfaceContainerHelper2::getContainer( const Type & rKey ) const +{ + ::osl::MutexGuard aGuard( rMutex ); + + auto iter = findType( rKey ); + if( iter != m_aMap.end() ) + return (*iter).second.get(); + return nullptr; +} + +sal_Int32 OMultiTypeInterfaceContainerHelper2::addInterface( + const Type & rKey, const Reference< XInterface > & rListener ) +{ + ::osl::MutexGuard aGuard( rMutex ); + auto iter = findType( rKey ); + if( iter == m_aMap.end() ) + { + OInterfaceContainerHelper2 * pLC = new OInterfaceContainerHelper2( rMutex ); + m_aMap.emplace_back(rKey, pLC); + return pLC->addInterface( rListener ); + } + return (*iter).second->addInterface( rListener ); +} + +sal_Int32 OMultiTypeInterfaceContainerHelper2::removeInterface( + const Type & rKey, const Reference< XInterface > & rListener ) +{ + ::osl::MutexGuard aGuard( rMutex ); + + // search container with id nUik + auto iter = findType( rKey ); + // container found? + if( iter != m_aMap.end() ) + return (*iter).second->removeInterface( rListener ); + + // no container with this id. Always return 0 + return 0; +} + +void OMultiTypeInterfaceContainerHelper2::disposeAndClear( const EventObject & rEvt ) +{ + t_type2ptr::size_type nSize = 0; + std::unique_ptr<OInterfaceContainerHelper2 *[]> ppListenerContainers; + { + ::osl::MutexGuard aGuard( rMutex ); + nSize = m_aMap.size(); + if( nSize ) + { + typedef OInterfaceContainerHelper2* ppp; + ppListenerContainers.reset(new ppp[nSize]); + + t_type2ptr::size_type i = 0; + for (const auto& rItem : m_aMap) + { + ppListenerContainers[i++] = rItem.second.get(); + } + } + } + + // create a copy, because do not fire event in a guarded section + for( t_type2ptr::size_type i = 0; i < nSize; i++ ) + { + if( ppListenerContainers[i] ) + ppListenerContainers[i]->disposeAndClear( rEvt ); + } +} + +void OMultiTypeInterfaceContainerHelper2::clear() +{ + ::osl::MutexGuard aGuard( rMutex ); + + for (auto& rItem : m_aMap) + rItem.second->clear(); +} + + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |