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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 <OConnectionPointHelper.hxx>
#include <OConnectionPointContainerHelper.hxx>
#include <com/sun/star/lang/InvalidListenerException.hpp>
#include <cppuhelper/queryinterface.hxx>
#include <comphelper/sequence.hxx>
// namespaces
using namespace ::osl;
using namespace ::cppu;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
namespace unocontrols {
// construct/destruct
OConnectionPointHelper::OConnectionPointHelper(
Mutex& aMutex ,
OConnectionPointContainerHelper* pContainerImplementation ,
Type const & aType
) : m_aSharedMutex ( aMutex )
, m_oContainerWeakReference ( pContainerImplementation )
, m_pContainerImplementation ( pContainerImplementation )
, m_aInterfaceType ( aType )
{
}
OConnectionPointHelper::~OConnectionPointHelper()
{
}
// XInterface
Any SAL_CALL OConnectionPointHelper::queryInterface( const Type& aType )
{
// Attention:
// Don't use mutex or guard in this method!!! Is a method of XInterface.
// Ask for my own supported interfaces ...
Any aReturn ( ::cppu::queryInterface( aType ,
static_cast< XConnectionPoint* > ( this )
)
);
// If searched interface not supported by this class ...
if ( !aReturn.hasValue() )
{
// ... ask baseclasses.
aReturn = OWeakObject::queryInterface( aType );
}
return aReturn;
}
// XInterface
void SAL_CALL OConnectionPointHelper::acquire() noexcept
{
// Attention:
// Don't use mutex or guard in this method!!! Is a method of XInterface.
// Forward to baseclass
OWeakObject::acquire();
}
// XInterface
void SAL_CALL OConnectionPointHelper::release() noexcept
{
// Attention:
// Don't use mutex or guard in this method!!! Is a method of XInterface.
// Forward to baseclass
OWeakObject::release();
}
// XConnectionPoint
Type SAL_CALL OConnectionPointHelper::getConnectionType()
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Set default return value, if method failed.
if ( !impl_LockContainer() )
{
throw RuntimeException("Container does not exist!");
}
// If container reference valid, return right type of supported interfaces of THIS connectionpoint.
Type aReturnType = m_aInterfaceType;
// Don't forget this!
impl_UnlockContainer();
return aReturnType;
}
// XConnectionPoint
Reference< XConnectionPointContainer > SAL_CALL OConnectionPointHelper::getConnectionPointContainer()
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Convert weakreference to correct uno3-reference and return value. It can be NULL, if container destroyed!
return Reference< XConnectionPointContainer >( m_oContainerWeakReference.get(), UNO_QUERY );
}
// XConnectionPoint
void SAL_CALL OConnectionPointHelper::advise( const Reference< XInterface >& xListener )
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// If type of listener not the same for this special container ...
Any aCheckType = xListener->queryInterface( m_aInterfaceType );
if ( aCheckType.hasValue() )
{
// ... throw an exception.
throw InvalidListenerException();
}
// ListenerExistException is obsolete!?
// It's the same container for XConnectionPointContainer and XConnectionPoint. But only here we must control, if a listener already exist!?
// You can add a listener more than one time at XConnectionPointContainer, but here only one ...
// Operation is permitted only, if reference to container is valid!
if ( !impl_LockContainer() )
{
throw RuntimeException("Container does not exist!");
}
// Forward it to OConnectionPointHelperContainer!
m_pContainerImplementation->advise( m_aInterfaceType, xListener );
// Don't forget this!
impl_UnlockContainer();
}
// XConnectionPoint
void SAL_CALL OConnectionPointHelper::unadvise( const Reference< XInterface >& xListener )
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Operation is permitted only, if reference to container is valid!
if ( !impl_LockContainer() )
{
throw RuntimeException("Container does not exist!");
}
// Forward it to OConnectionPointHelperContainer!
m_pContainerImplementation->unadvise( m_aInterfaceType, xListener );
// Don't forget this!
impl_UnlockContainer();
}
// XConnectionPoint
Sequence< Reference< XInterface > > SAL_CALL OConnectionPointHelper::getConnections()
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Operation is permitted only, if reference to container is valid!
if ( !impl_LockContainer() )
{
throw RuntimeException("Container does not exist!");
}
// Set default return value, if method failed.
Sequence< Reference< XInterface > > seqReturnConnections;
// Get reference to private member of OConnectionPointHelperContainer!
comphelper::OMultiTypeInterfaceContainerHelper2& aSharedContainer = m_pContainerImplementation->impl_getMultiTypeContainer();
// Get pointer to specialized container which hold all interfaces of searched type.
comphelper::OInterfaceContainerHelper2* pSpecialContainer = aSharedContainer.getContainer( m_aInterfaceType );
// Get elements of searched type, if some else exist.
if ( pSpecialContainer != nullptr )
{
seqReturnConnections = comphelper::containerToSequence(pSpecialContainer->getElements());
}
// Don't forget this!
impl_UnlockContainer();
return seqReturnConnections;
}
// private method
bool OConnectionPointHelper::impl_LockContainer()
{
// Convert weakreference to hard uno3-reference and return state.
// If this reference different from NULL, there exist a hard reference to container. Container-instance can't be destroyed.
// Don't forget to "unlock" this reference!
m_xLock = m_oContainerWeakReference.get();
return m_xLock.is();
}
// private method
void OConnectionPointHelper::impl_UnlockContainer()
{
// Free hard uno3-reference to container.
// see also "impl_LockContainer()"
m_xLock.clear();
}
} // namespace unocontrols
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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