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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 "EventThread.hxx"
#include <comphelper/guarding.hxx>
#include <tools/debug.hxx>
#include <cppuhelper/queryinterface.hxx>
#include <memory>
namespace frm
{
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::awt;
using namespace ::com::sun::star::lang;
OComponentEventThread::OComponentEventThread( ::cppu::OComponentHelper* pCompImpl ) :
m_xComp( pCompImpl )
{
osl_atomic_increment(&m_refCount);
// and add us at the Control
{
Reference<XEventListener> xEvtLstnr = static_cast<XEventListener*>(this);
m_xComp->addEventListener( xEvtLstnr );
}
osl_atomic_decrement(&m_refCount);
}
OComponentEventThread::~OComponentEventThread()
{
DBG_ASSERT( m_aEvents.empty(),
"OComponentEventThread::~OComponentEventThread: Didn't call dispose?" );
impl_clearEventQueue();
}
Any SAL_CALL OComponentEventThread::queryInterface(const Type& _rType)
{
Any aReturn = OWeakObject::queryInterface(_rType);
if (!aReturn.hasValue())
aReturn = ::cppu::queryInterface(_rType,
static_cast<XEventListener*>(this)
);
return aReturn;
}
void OComponentEventThread::impl_clearEventQueue()
{
m_aEvents.clear();
m_aControls.clear();
m_aFlags.clear();
}
void OComponentEventThread::disposing( const EventObject& evt )
{
if( evt.Source != static_cast<XWeak*>(m_xComp.get()) )
return;
std::unique_lock aGuard( m_aMutex );
// Remove EventListener
Reference<XEventListener> xEvtLstnr = static_cast<XEventListener*>(this);
m_xComp->removeEventListener( xEvtLstnr );
// Clear EventQueue
impl_clearEventQueue();
// Free the Control and set pCompImpl to 0,
// so that the thread knows, that it should terminate.
m_xComp.clear();
// Wake up the thread and terminate
m_aCond.set();
terminate();
}
void OComponentEventThread::addEvent( std::unique_ptr<EventObject> _pEvt )
{
Reference<XControl> xTmp;
addEvent( std::move(_pEvt), xTmp );
}
void OComponentEventThread::addEvent( std::unique_ptr<EventObject> _pEvt,
const Reference<XControl>& rControl,
bool bFlag )
{
std::unique_lock aGuard( m_aMutex );
// Put data into the queue
m_aEvents.push_back( std::move( _pEvt ) );
Reference<XWeak> xWeakControl(rControl, UNO_QUERY);
Reference<XAdapter> xControlAdapter = xWeakControl.is() ? xWeakControl->queryAdapter() : Reference<XAdapter>();
m_aControls.push_back( xControlAdapter );
m_aFlags.push_back( bFlag );
// Wake up thread
m_aCond.set();
}
void SAL_CALL OComponentEventThread::onTerminated()
{
OComponentEventThread_TBASE::onTerminated();
release( );
}
void OComponentEventThread::run()
{
osl_setThreadName("frm::OComponentEventThread");
acquire( );
// Hold on to ourselves, so that we're not deleted if a dispose is called at some point in time
css::uno::Reference<css::uno::XInterface> xThis(static_cast<XWeak*>(this));
do
{
std::unique_lock aGuard(m_aMutex);
while( !m_aEvents.empty() )
{
// Get the Control and hold on to it so that it cannot be deleted during actionPerformed
rtl::Reference<::cppu::OComponentHelper> xComp = m_xComp;
ThreadEvents::iterator firstEvent( m_aEvents.begin() );
std::unique_ptr<EventObject> pEvt = std::move(*firstEvent);
m_aEvents.erase( firstEvent );
ThreadObjects::iterator firstControl( m_aControls.begin() );
Reference<XAdapter> xControlAdapter = *firstControl;
m_aControls.erase( firstControl );
auto firstFlag( m_aFlags.begin() );
bool bFlag = *firstFlag;
m_aFlags.erase( firstFlag );
{
aGuard.unlock();
// Because a queryHardRef can throw an Exception, it should not be called when
// the mutex is locked.
Reference<XControl> xControl;
if ( xControlAdapter.is() )
xControl.set(
xControlAdapter->queryAdapted(), css::uno::UNO_QUERY);
if( xComp.is() )
processEvent( xComp.get(), pEvt.get(), xControl, bFlag );
aGuard.lock();
}
}
// After a Dispose, we do not know the Control anymore.
// Thus, we must not wait either.
if( !m_xComp.is() )
return;
// Reset waiting condition
m_aCond.reset();
{
aGuard.unlock();
// And wait ... if, in the meantime, an Event came in after all
m_aCond.wait();
aGuard.lock();
}
}
while( true );
}
} // namespace frm
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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