/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
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* 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 .
*/
#pragma once
#include <sal/config.h>
#include <vcl/dllapi.h>
#include <mutex>
#include <osl/thread.hxx>
#include <list>
#include <o3tl/sorted_vector.hxx>
class SalFrame;
enum class SalEvent;
typedef o3tl::sorted_vector< SalFrame* > SalFrameSet;
class VCL_PLUGIN_PUBLIC SalUserEventList
{
public :
struct SalUserEvent
{
SalFrame* m_pFrame;
void * m_pData;
SalEvent m_nEvent;
SalUserEvent( SalFrame* pFrame, void * pData, SalEvent nEvent )
: m_pFrame( pFrame ),
m_pData( pData ),
m_nEvent( nEvent )
{}
bool operator ==(const SalUserEvent &aEvent) const
{
return m_pFrame == aEvent.m_pFrame
&& m_pData == aEvent.m_pData
&& m_nEvent== aEvent.m_nEvent;
}
};
protected :
mutable std::mutex m_aUserEventsMutex;
std::list< SalUserEvent > m_aUserEvents;
std::list< SalUserEvent > m_aProcessingUserEvents;
bool m_bAllUserEventProcessedSignaled;
SalFrameSet m_aFrames;
oslThreadIdentifier m_aProcessingThread;
virtual void ProcessEvent( SalUserEvent aEvent ) = 0 ;
virtual void TriggerUserEventProcessing() = 0 ;
virtual void TriggerAllUserEventsProcessed() {}
inline bool HasUserEvents_NoLock() const ;
public :
SalUserEventList();
virtual ~SalUserEventList() COVERITY_NOEXCEPT_FALSE;
inline const SalFrameSet& getFrames() const ;
inline SalFrame* anyFrame() const ;
void insertFrame( SalFrame* pFrame );
void eraseFrame( SalFrame* pFrame );
inline bool isFrameAlive( const SalFrame* pFrame ) const ;
void PostEvent( SalFrame* pFrame, void * pData, SalEvent nEvent );
void RemoveEvent( SalFrame* pFrame, void * pData, SalEvent nEvent );
inline bool HasUserEvents() const ;
bool DispatchUserEvents( bool bHandleAllCurrentEvents );
};
inline SalFrame* SalUserEventList::anyFrame() const
{
if ( m_aFrames.empty() )
return nullptr;
return *m_aFrames.begin();
}
inline bool SalUserEventList::isFrameAlive( const SalFrame* pFrame ) const
{
auto it = m_aFrames.find( const_cast <SalFrame*>( pFrame ) );
return it != m_aFrames.end();
}
inline bool SalUserEventList::HasUserEvents() const
{
std::unique_lock aGuard( m_aUserEventsMutex );
return HasUserEvents_NoLock();
}
inline bool SalUserEventList::HasUserEvents_NoLock() const
{
return !(m_aUserEvents.empty() && m_aProcessingUserEvents.empty());
}
inline void SalUserEventList::PostEvent( SalFrame* pFrame, void * pData, SalEvent nEvent )
{
std::unique_lock aGuard( m_aUserEventsMutex );
m_aUserEvents.push_back( SalUserEvent( pFrame, pData, nEvent ) );
m_bAllUserEventProcessedSignaled = false ;
TriggerUserEventProcessing();
}
inline const SalFrameSet& SalUserEventList::getFrames() const
{
return m_aFrames;
}
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