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-rw-r--r--cppuhelper/source/interfacecontainer.cxx595
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+/* -*- 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 <cppuhelper/interfacecontainer.hxx>
+#include <cppuhelper/propshlp.hxx>
+#include <comphelper/sequence.hxx>
+
+#include <osl/diagnose.h>
+#include <osl/mutex.hxx>
+#include <sal/log.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 cppu
+{
+
+OInterfaceIteratorHelper::OInterfaceIteratorHelper( OInterfaceContainerHelper & 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;
+}
+
+OInterfaceIteratorHelper::~OInterfaceIteratorHelper()
+{
+ 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, "OInterfaceContainerHelper 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 * OInterfaceIteratorHelper::next()
+{
+ if( nRemain )
+ {
+ nRemain--;
+ if( bIsList )
+ // typecase to const,so the getArray method is faster
+ return (*aData.pAsVector)[nRemain].get();
+ if( aData.pAsInterface )
+ return aData.pAsInterface;
+ }
+ // exception
+ return nullptr;
+}
+
+void OInterfaceIteratorHelper::remove()
+{
+ if( bIsList )
+ {
+ OSL_ASSERT( nRemain >= 0 &&
+ nRemain < static_cast<sal_Int32>(aData.pAsVector->size()) );
+ XInterface * p = (*aData.pAsVector)[nRemain].get();
+ rCont.removeInterface( * reinterpret_cast< const Reference< XInterface > * >( &p ) );
+ }
+ else
+ {
+ OSL_ASSERT( 0 == nRemain );
+ rCont.removeInterface( * reinterpret_cast< const Reference< XInterface > * >(&aData.pAsInterface));
+ }
+}
+
+OInterfaceContainerHelper::OInterfaceContainerHelper( Mutex & rMutex_ )
+ : rMutex( rMutex_ )
+ , bInUse( false )
+ , bIsList( false )
+{
+}
+
+OInterfaceContainerHelper::~OInterfaceContainerHelper()
+{
+ OSL_ENSURE( !bInUse, "~OInterfaceContainerHelper but is in use" );
+ if( bIsList )
+ delete aData.pAsVector;
+ else if( aData.pAsInterface )
+ aData.pAsInterface->release();
+}
+
+sal_Int32 OInterfaceContainerHelper::getLength() const
+{
+ MutexGuard aGuard( rMutex );
+ if( bIsList )
+ return aData.pAsVector->size();
+ if( aData.pAsInterface )
+ return 1;
+ return 0;
+}
+
+Sequence< Reference<XInterface> > OInterfaceContainerHelper::getElements() const
+{
+ MutexGuard aGuard( rMutex );
+ if( bIsList )
+ return comphelper::containerToSequence(*aData.pAsVector);
+ if( aData.pAsInterface )
+ {
+ Reference<XInterface> x( aData.pAsInterface );
+ return Sequence< Reference< XInterface > >( &x, 1 );
+ }
+ return Sequence< Reference< XInterface > >();
+}
+
+void OInterfaceContainerHelper::copyAndResetInUse()
+{
+ OSL_ENSURE( bInUse, "OInterfaceContainerHelper 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 OInterfaceContainerHelper::addInterface( const Reference<XInterface> & rListener )
+{
+ SAL_WARN_IF( !rListener.is(), "cppuhelper", "rListener is empty" );
+ MutexGuard aGuard( rMutex );
+ if( bInUse )
+ copyAndResetInUse();
+
+ if( bIsList )
+ {
+ aData.pAsVector->push_back(rListener);
+ return aData.pAsVector->size();
+ }
+ if( aData.pAsInterface )
+ {
+ Reference<XInterface> tmp(aData.pAsInterface);
+ aData.pAsInterface->release();
+ aData.pAsVector = new std::vector<Reference<XInterface>>(2);
+ (*aData.pAsVector)[0] = std::move(tmp);
+ (*aData.pAsVector)[1] = rListener;
+ bIsList = true;
+ return 2;
+ }
+ aData.pAsInterface = rListener.get();
+ if( rListener.is() )
+ rListener->acquire();
+ return 1;
+}
+
+sal_Int32 OInterfaceContainerHelper::removeInterface( const Reference<XInterface> & rListener )
+{
+ SAL_WARN_IF( !rListener.is(), "cppuhelper", "rListener is empty" );
+ MutexGuard aGuard( rMutex );
+ if( bInUse )
+ copyAndResetInUse();
+
+ if( bIsList )
+ {
+ // It is not valid to compare the pointer directly, but it's faster.
+ auto findIt = std::find_if(aData.pAsVector->begin(), aData.pAsVector->end(),
+ [&](const Reference<XInterface>& r)
+ { return r.get() == rListener.get(); });
+ if (findIt != aData.pAsVector->end())
+ {
+ aData.pAsVector->erase(findIt);
+ }
+ else
+ {
+ // interface not found, use the correct compare method
+ for( auto it = aData.pAsVector->begin(); it != aData.pAsVector->end(); ++it )
+ {
+ if( *it == rListener )
+ {
+ aData.pAsVector->erase(it);
+ break;
+ }
+ }
+ }
+
+ if( aData.pAsVector->size() == 1 )
+ {
+ XInterface * p = (*aData.pAsVector)[0].get();
+ p->acquire();
+ delete aData.pAsVector;
+ aData.pAsInterface = p;
+ bIsList = false;
+ return 1;
+ }
+ return aData.pAsVector->size();
+ }
+ if( aData.pAsInterface && Reference<XInterface>( aData.pAsInterface ) == rListener )
+ {
+ aData.pAsInterface->release();
+ aData.pAsInterface = nullptr;
+ }
+ return aData.pAsInterface ? 1 : 0;
+}
+
+void OInterfaceContainerHelper::disposeAndClear( const EventObject & rEvt )
+{
+ ClearableMutexGuard aGuard( rMutex );
+ OInterfaceIteratorHelper aIt( *this );
+ // Release container, in case new entries come while disposing
+ OSL_ENSURE( !bIsList || bInUse, "OInterfaceContainerHelper 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 OInterfaceContainerHelper::clear()
+{
+ MutexGuard aGuard( rMutex );
+ // Release container, in case new entries come while disposing
+ OSL_ENSURE( !bIsList || bInUse, "OInterfaceContainerHelper 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
+
+typedef std::vector< std::pair < Type , void* > > t_type2ptr;
+
+OMultiTypeInterfaceContainerHelper::OMultiTypeInterfaceContainerHelper( Mutex & rMutex_ )
+ : rMutex( rMutex_ )
+{
+ m_pMap = new t_type2ptr;
+}
+
+OMultiTypeInterfaceContainerHelper::~OMultiTypeInterfaceContainerHelper()
+{
+ t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
+
+ for (auto& rItem : *pMap)
+ {
+ delete static_cast<OInterfaceContainerHelper*>(rItem.second);
+ rItem.second = nullptr;
+ }
+ delete pMap;
+}
+
+Sequence< Type > OMultiTypeInterfaceContainerHelper::getContainedTypes() const
+{
+ t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
+ t_type2ptr::size_type nSize;
+
+ ::osl::MutexGuard aGuard( rMutex );
+ nSize = pMap->size();
+ if( nSize )
+ {
+ css::uno::Sequence< Type > aInterfaceTypes( nSize );
+ Type * pArray = aInterfaceTypes.getArray();
+
+ sal_Int32 i = 0;
+ for (const auto& rItem : *pMap)
+ {
+ // are interfaces added to this container?
+ if( static_cast<OInterfaceContainerHelper*>(rItem.second)->getLength() )
+ // yes, put the type in the array
+ pArray[i++] = rItem.first;
+ }
+ if( static_cast<t_type2ptr::size_type>(i) != nSize ) {
+ // may be empty container, reduce the sequence to the right size
+ aInterfaceTypes = css::uno::Sequence< Type >( pArray, i );
+ }
+ return aInterfaceTypes;
+ }
+ return css::uno::Sequence< Type >();
+}
+
+static t_type2ptr::iterator findType(t_type2ptr *pMap, const Type & rKey )
+{
+ return std::find_if(pMap->begin(), pMap->end(),
+ [&rKey](const t_type2ptr::value_type& rItem) { return rItem.first == rKey; });
+}
+
+OInterfaceContainerHelper * OMultiTypeInterfaceContainerHelper::getContainer( const Type & rKey ) const
+{
+ ::osl::MutexGuard aGuard( rMutex );
+
+ t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
+ t_type2ptr::iterator iter = findType( pMap, rKey );
+ if( iter != pMap->end() )
+ return static_cast<OInterfaceContainerHelper*>((*iter).second);
+ return nullptr;
+}
+
+sal_Int32 OMultiTypeInterfaceContainerHelper::addInterface(
+ const Type & rKey, const Reference< XInterface > & rListener )
+{
+ ::osl::MutexGuard aGuard( rMutex );
+ t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
+ t_type2ptr::iterator iter = findType( pMap, rKey );
+ if( iter == pMap->end() )
+ {
+ OInterfaceContainerHelper * pLC = new OInterfaceContainerHelper( rMutex );
+ pMap->push_back(std::pair<Type, void*>(rKey, pLC));
+ return pLC->addInterface( rListener );
+ }
+ return static_cast<OInterfaceContainerHelper*>((*iter).second)->addInterface( rListener );
+}
+
+sal_Int32 OMultiTypeInterfaceContainerHelper::removeInterface(
+ const Type & rKey, const Reference< XInterface > & rListener )
+{
+ ::osl::MutexGuard aGuard( rMutex );
+
+ // search container with id nUik
+ t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
+ t_type2ptr::iterator iter = findType( pMap, rKey );
+ // container found?
+ if( iter != pMap->end() )
+ return static_cast<OInterfaceContainerHelper*>((*iter).second)->removeInterface( rListener );
+
+ // no container with this id. Always return 0
+ return 0;
+}
+
+void OMultiTypeInterfaceContainerHelper::disposeAndClear( const EventObject & rEvt )
+{
+ t_type2ptr::size_type nSize = 0;
+ std::unique_ptr<OInterfaceContainerHelper *[]> ppListenerContainers;
+ {
+ ::osl::MutexGuard aGuard( rMutex );
+ t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
+ nSize = pMap->size();
+ if( nSize )
+ {
+ typedef OInterfaceContainerHelper* ppp;
+ ppListenerContainers.reset(new ppp[nSize]);
+ //ppListenerContainers = new (ListenerContainer*)[nSize];
+
+ t_type2ptr::size_type i = 0;
+ for (const auto& rItem : *pMap)
+ {
+ ppListenerContainers[i++] = static_cast<OInterfaceContainerHelper*>(rItem.second);
+ }
+ }
+ }
+
+ // 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 OMultiTypeInterfaceContainerHelper::clear()
+{
+ ::osl::MutexGuard aGuard( rMutex );
+ t_type2ptr * pMap = static_cast<t_type2ptr *>(m_pMap);
+
+ for (auto& rItem : *pMap)
+ {
+ static_cast<OInterfaceContainerHelper*>(rItem.second)->clear();
+ }
+}
+
+// specialized class for long
+
+typedef std::vector< std::pair < sal_Int32 , void* > > t_long2ptr;
+
+static t_long2ptr::iterator findLong(t_long2ptr *pMap, sal_Int32 nKey )
+{
+ return std::find_if(pMap->begin(), pMap->end(),
+ [&nKey](const t_long2ptr::value_type& rItem) { return rItem.first == nKey; });
+}
+
+OMultiTypeInterfaceContainerHelperInt32::OMultiTypeInterfaceContainerHelperInt32( Mutex & rMutex_ )
+ : m_pMap( nullptr )
+ , rMutex( rMutex_ )
+{
+ // delay pMap allocation until necessary.
+}
+
+OMultiTypeInterfaceContainerHelperInt32::~OMultiTypeInterfaceContainerHelperInt32()
+{
+ if (!m_pMap)
+ return;
+
+ t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
+
+ for (auto& rItem : *pMap)
+ {
+ delete static_cast<OInterfaceContainerHelper*>(rItem.second);
+ rItem.second = nullptr;
+ }
+ delete pMap;
+}
+
+Sequence< sal_Int32 > OMultiTypeInterfaceContainerHelperInt32::getContainedTypes() const
+{
+ t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
+ t_long2ptr::size_type nSize;
+
+ ::osl::MutexGuard aGuard( rMutex );
+ nSize = pMap ? pMap->size() : 0;
+ if( nSize )
+ {
+ css::uno::Sequence< sal_Int32 > aInterfaceTypes( nSize );
+ sal_Int32 * pArray = aInterfaceTypes.getArray();
+
+ sal_Int32 i = 0;
+ for (const auto& rItem : *pMap)
+ {
+ // are interfaces added to this container?
+ if( static_cast<OInterfaceContainerHelper*>(rItem.second)->getLength() )
+ // yes, put the type in the array
+ pArray[i++] = rItem.first;
+ }
+ if( static_cast<t_long2ptr::size_type>(i) != nSize ) {
+ // may be empty container, reduce the sequence to the right size
+ aInterfaceTypes = css::uno::Sequence< sal_Int32 >( pArray, i );
+ }
+ return aInterfaceTypes;
+ }
+ return css::uno::Sequence< sal_Int32 >();
+}
+
+OInterfaceContainerHelper * OMultiTypeInterfaceContainerHelperInt32::getContainer( const sal_Int32 & rKey ) const
+{
+ ::osl::MutexGuard aGuard( rMutex );
+
+ if (!m_pMap)
+ return nullptr;
+ t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
+ t_long2ptr::iterator iter = findLong( pMap, rKey );
+ if( iter != pMap->end() )
+ return static_cast<OInterfaceContainerHelper*>((*iter).second);
+ return nullptr;
+}
+
+sal_Int32 OMultiTypeInterfaceContainerHelperInt32::addInterface(
+ const sal_Int32 & rKey, const Reference< XInterface > & rListener )
+{
+ ::osl::MutexGuard aGuard( rMutex );
+ if (!m_pMap)
+ m_pMap = new t_long2ptr;
+ t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
+ t_long2ptr::iterator iter = findLong( pMap, rKey );
+ if( iter == pMap->end() )
+ {
+ OInterfaceContainerHelper * pLC = new OInterfaceContainerHelper( rMutex );
+ pMap->push_back(std::pair< sal_Int32, void* >(rKey, pLC));
+ return pLC->addInterface( rListener );
+ }
+ return static_cast<OInterfaceContainerHelper*>((*iter).second)->addInterface( rListener );
+}
+
+sal_Int32 OMultiTypeInterfaceContainerHelperInt32::removeInterface(
+ const sal_Int32 & rKey, const Reference< XInterface > & rListener )
+{
+ ::osl::MutexGuard aGuard( rMutex );
+
+ if (!m_pMap)
+ return 0;
+ // search container with id nUik
+ t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
+ t_long2ptr::iterator iter = findLong( pMap, rKey );
+ // container found?
+ if( iter != pMap->end() )
+ return static_cast<OInterfaceContainerHelper*>((*iter).second)->removeInterface( rListener );
+
+ // no container with this id. Always return 0
+ return 0;
+}
+
+void OMultiTypeInterfaceContainerHelperInt32::disposeAndClear( const EventObject & rEvt )
+{
+ t_long2ptr::size_type nSize = 0;
+ std::unique_ptr<OInterfaceContainerHelper *[]> ppListenerContainers;
+ {
+ ::osl::MutexGuard aGuard( rMutex );
+ if (!m_pMap)
+ return;
+
+ t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
+ nSize = pMap->size();
+ if( nSize )
+ {
+ typedef OInterfaceContainerHelper* ppp;
+ ppListenerContainers.reset(new ppp[nSize]);
+
+ t_long2ptr::size_type i = 0;
+ for (const auto& rItem : *pMap)
+ {
+ ppListenerContainers[i++] = static_cast<OInterfaceContainerHelper*>(rItem.second);
+ }
+ }
+ }
+
+ // create a copy, because do not fire event in a guarded section
+ for( t_long2ptr::size_type i = 0;
+ i < nSize; i++ )
+ {
+ if( ppListenerContainers[i] )
+ ppListenerContainers[i]->disposeAndClear( rEvt );
+ }
+}
+
+void OMultiTypeInterfaceContainerHelperInt32::clear()
+{
+ ::osl::MutexGuard aGuard( rMutex );
+ if (!m_pMap)
+ return;
+ t_long2ptr * pMap = static_cast<t_long2ptr *>(m_pMap);
+
+ for (auto& rItem : *pMap)
+ {
+ static_cast<OInterfaceContainerHelper*>(rItem.second)->clear();
+ }
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */