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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 "eventhandler.hxx"
#include <algorithm>
#include <tools/debug.hxx>
namespace sdr
{
namespace event
{
BaseEvent::BaseEvent(TimerEventHandler& rEventHandler)
: mrEventHandler(rEventHandler)
{
mrEventHandler.AddEvent(*this);
}
BaseEvent::~BaseEvent()
{
mrEventHandler.RemoveEvent(*this);
}
} // end of namespace mixer
} // end of namespace sdr
namespace sdr
{
namespace event
{
void TimerEventHandler::AddEvent(BaseEvent& rBaseEvent)
{
maVector.push_back(&rBaseEvent);
}
void TimerEventHandler::RemoveEvent(BaseEvent& rBaseEvent)
{
if(maVector.back() == &rBaseEvent)
{
// the one to remove is the last, pop
maVector.pop_back();
}
else
{
const auto aFindResult = ::std::find(
maVector.begin(), maVector.end(), &rBaseEvent);
DBG_ASSERT(aFindResult != maVector.end(),
"EventHandler::RemoveEvent: Event to be removed not found (!)");
maVector.erase(aFindResult);
}
}
BaseEvent* TimerEventHandler::GetEvent()
{
if(!maVector.empty())
{
// get the last event, that one is fastest to be removed
return maVector.back();
}
else
{
return nullptr;
}
}
TimerEventHandler::TimerEventHandler()
{
SetPriority(TaskPriority::HIGH_IDLE);
Stop();
}
TimerEventHandler::~TimerEventHandler()
{
Stop();
while(!maVector.empty())
{
delete GetEvent();
}
}
// for control
bool TimerEventHandler::IsEmpty() const
{
return (0 == maVector.size());
}
// The timer when it is triggered; from class Timer
void TimerEventHandler::Invoke()
{
// Trigger and consume the events
for(;;)
{
BaseEvent* pEvent = GetEvent();
if(pEvent == nullptr)
break;
pEvent->ExecuteEvent();
delete pEvent;
}
}
// reset the timer
void TimerEventHandler::Restart()
{
Start();
}
} // end of namespace mixer
} // end of namespace sdr
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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