/**
 * @file llflashtimer.cpp
 * @brief LLFlashTimer class implementation
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2012, 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
 * $/LicenseInfo$
 */
#include "llflashtimer.h"
#include "lleventtimer.h"
#include "llui.h"

LLFlashTimer::LLFlashTimer(callback_t cb, S32 count, F32 period)
:	LLEventTimer(period),
	mCallback(cb),
	mCurrentTickCount(0),
    mIsFlashingInProgress(false),
    mIsCurrentlyHighlighted(false),
    mUnset(false)
{
	mEventTimer.stop();

	// By default use settings from settings.xml to be able change them via Debug settings. See EXT-5973.
	// Due to Timer is implemented as derived class from EventTimer it is impossible to change period
	// in runtime. So, both settings are made as required restart.
	// <FS:CR>
	//mFlashCount = 2 * ((count > 0) ? count : LLUI::getInstance()->mSettingGroups["config"]->getS32("FlashCount"));
	static LLCachedControl<S32> flash_count(*LLUI::getInstance()->mSettingGroups["config"], "FlashCount");
	mFlashCount = 2 * ((count > 0) ? count : flash_count);
	// </FS:CR>
	if (mPeriod <= 0)
	{
		//mPeriod = LLUI::getInstance()->mSettingGroups["config"]->getF32("FlashPeriod");
		// <FS:CR>
		static LLCachedControl<F32> flash_period(*LLUI::getInstance()->mSettingGroups["config"], "FlashPeriod");
		mPeriod = flash_period;
		// </FS:CR>
	}

	// <FS:Ansariel> Configurable at runtime
	LLUI::getInstance()->mSettingGroups["config"]->getControl("FlashCount")->getSignal()->connect(boost::bind(&LLFlashTimer::onUpdateFlashSettings, this));
	LLUI::getInstance()->mSettingGroups["config"]->getControl("FlashPeriod")->getSignal()->connect(boost::bind(&LLFlashTimer::onUpdateFlashSettings, this));
	// </FS:Ansariel>
}

// <FS:Ansariel> Configurable at runtime
void LLFlashTimer::onUpdateFlashSettings()
{
	stopFlashing();
	mFlashCount = 2 * llmax(LLUI::getInstance()->mSettingGroups["config"]->getS32("FlashCount"), 0);
	mPeriod = llmax(LLUI::getInstance()->mSettingGroups["config"]->getF32("FlashPeriod"), 0.f);
}
// </FS:Ansariel>

void LLFlashTimer::unset()
{
	mUnset = true;
	mCallback = NULL;
}

BOOL LLFlashTimer::tick()
{
	mIsCurrentlyHighlighted = !mIsCurrentlyHighlighted;

	if (mCallback)
	{
		mCallback(mIsCurrentlyHighlighted);
	}

	if (++mCurrentTickCount >= mFlashCount)
	{
		stopFlashing();
	}

	return mUnset;
}

void LLFlashTimer::startFlashing()
{
	mIsFlashingInProgress = true;
	mIsCurrentlyHighlighted = true;
	mEventTimer.start();
}

void LLFlashTimer::stopFlashing()
{
	mEventTimer.stop();
	mIsFlashingInProgress = false;
	mIsCurrentlyHighlighted = false;
	mCurrentTickCount = 0;
}

bool LLFlashTimer::isFlashingInProgress()
{
	return mIsFlashingInProgress;
}

bool LLFlashTimer::isCurrentlyHighlighted()
{
	return mIsCurrentlyHighlighted;
}


