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/**
* @file lleventfilter.cpp
* @author Nat Goodspeed
* @date 2009-03-05
* @brief Implementation for lleventfilter.
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
// Precompiled header
#include "linden_common.h"
// associated header
#include "lleventfilter.h"
// STL headers
// std headers
// external library headers
#include <boost/bind.hpp>
// other Linden headers
#include "llerror.h" // LL_ERRS
#include "llsdutil.h" // llsd_matches()
LLEventFilter::LLEventFilter(LLEventPump& source, const std::string& name, bool tweak):
LLEventStream(name, tweak)
{
source.listen(getName(), boost::bind(&LLEventFilter::post, this, _1));
}
LLEventMatching::LLEventMatching(const LLSD& pattern):
LLEventFilter("matching"),
mPattern(pattern)
{
}
LLEventMatching::LLEventMatching(LLEventPump& source, const LLSD& pattern):
LLEventFilter(source, "matching"),
mPattern(pattern)
{
}
bool LLEventMatching::post(const LLSD& event)
{
if (! llsd_matches(mPattern, event).empty())
return false;
return LLEventStream::post(event);
}
LLEventTimeoutBase::LLEventTimeoutBase():
LLEventFilter("timeout")
{
}
LLEventTimeoutBase::LLEventTimeoutBase(LLEventPump& source):
LLEventFilter(source, "timeout")
{
}
void LLEventTimeoutBase::actionAfter(F32 seconds, const Action& action)
{
setCountdown(seconds);
mAction = action;
if (! mMainloop.connected())
{
LLEventPump& mainloop(LLEventPumps::instance().obtain("mainloop"));
mMainloop = mainloop.listen(getName(), boost::bind(&LLEventTimeoutBase::tick, this, _1));
}
}
class ErrorAfter
{
public:
ErrorAfter(const std::string& message): mMessage(message) {}
void operator()()
{
LL_ERRS("LLEventTimeout") << mMessage << LL_ENDL;
}
private:
std::string mMessage;
};
void LLEventTimeoutBase::errorAfter(F32 seconds, const std::string& message)
{
actionAfter(seconds, ErrorAfter(message));
}
class EventAfter
{
public:
EventAfter(LLEventPump& pump, const LLSD& event):
mPump(pump),
mEvent(event)
{}
void operator()()
{
mPump.post(mEvent);
}
private:
LLEventPump& mPump;
LLSD mEvent;
};
void LLEventTimeoutBase::eventAfter(F32 seconds, const LLSD& event)
{
actionAfter(seconds, EventAfter(*this, event));
}
bool LLEventTimeoutBase::post(const LLSD& event)
{
cancel();
return LLEventStream::post(event);
}
void LLEventTimeoutBase::cancel()
{
mMainloop.disconnect();
}
bool LLEventTimeoutBase::tick(const LLSD&)
{
if (countdownElapsed())
{
cancel();
mAction();
}
return false; // show event to other listeners
}
LLEventTimeout::LLEventTimeout() {}
LLEventTimeout::LLEventTimeout(LLEventPump& source):
LLEventTimeoutBase(source)
{
}
void LLEventTimeout::setCountdown(F32 seconds)
{
mTimer.setTimerExpirySec(seconds);
}
bool LLEventTimeout::countdownElapsed() const
{
return mTimer.hasExpired();
}
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