/**
* @file llsculptidsize.h
* @brief LLSculptIDSize class definition
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/

#ifndef LL_LLSCULPTIDSIZE_H
#define LL_LLSCULPTIDSIZE_H

#include "lluuid.h"

//std
#include <set>
#include <utility>
//boost
#include "boost/multi_index_container.hpp"
#include "boost/multi_index/ordered_index.hpp"
#include "boost/multi_index/mem_fun.hpp"

class LLDrawable;


class LLSculptIDSize
{
public:
	struct SizeSum
	{
		SizeSum(int size) 
			: mSizeSum(size)
		{}
		unsigned int mSizeSum;
	};

	struct Info
	{
		typedef std::shared_ptr<SizeSum> PtrSizeSum;

		Info(const LLDrawable *drawable, int size, PtrSizeSum sizeInfo, LLUUID sculptId)
			: mDrawable(drawable)
			, mSize(size)
			, mSharedSizeSum(std::move(sizeInfo))
			, mSculptId(sculptId)
		{}

		const LLDrawable *mDrawable;
		unsigned int mSize;
		PtrSizeSum	mSharedSizeSum;
		LLUUID mSculptId;

		inline const LLDrawable*	getPtrLLDrawable() const { return mDrawable; }
		inline unsigned int			getSize() const { return mSize; }
		inline unsigned int			getSizeSum() const { return mSharedSizeSum->mSizeSum; }
		inline LLUUID				getSculptId() const { return mSculptId; }
		PtrSizeSum					getSizeInfo() { return mSharedSizeSum; }
	};

public:
	//tags
	struct tag_BY_DRAWABLE {};
	struct tag_BY_SCULPT_ID {};
	struct tag_BY_SIZE {};

	//container
	typedef boost::multi_index_container <
		Info,
		boost::multi_index::indexed_by <
		boost::multi_index::ordered_unique< boost::multi_index::tag<tag_BY_DRAWABLE>
		, boost::multi_index::const_mem_fun<Info, const LLDrawable*, &Info::getPtrLLDrawable>
		>
		, boost::multi_index::ordered_non_unique<boost::multi_index::tag<tag_BY_SCULPT_ID>
		, boost::multi_index::const_mem_fun<Info, LLUUID, &Info::getSculptId>
		>
		, boost::multi_index::ordered_non_unique < boost::multi_index::tag<tag_BY_SIZE>
		, boost::multi_index::const_mem_fun < Info, unsigned int, &Info::getSizeSum >
		>
		>
	> container;

	//views
	typedef container::index<tag_BY_DRAWABLE>::type			container_BY_DRAWABLE_view;
	typedef container::index<tag_BY_SCULPT_ID>::type		container_BY_SCULPT_ID_view;
	typedef container::index<tag_BY_SIZE>::type				container_BY_SIZE_view;

private:
	LLSculptIDSize()
	{}

public:
	static LLSculptIDSize & instance() 
	{
		static LLSculptIDSize inst;
		return inst;
	}

public:
	void inc(const LLDrawable *pdrawable, int sz);
	void dec(const LLDrawable *pdrawable);
	void rem(const LLUUID &sculptId);

	inline void addToUnloaded(const LLUUID &sculptId) { mMarkAsUnloaded.insert(sculptId); }
	inline void remFromUnloaded(const LLUUID &sculptId) { mMarkAsUnloaded.erase(sculptId); }
	inline bool isUnloaded(const LLUUID &sculptId) const { return mMarkAsUnloaded.end() != mMarkAsUnloaded.find(sculptId); }
	inline void clearUnloaded() { mMarkAsUnloaded.clear(); }
	
	void resetSizeSum(const LLUUID &sculptId);

	inline const container & getSizeInfo() const { return mSizeInfo; }

private:
	container mSizeInfo;
	typedef std::set<LLUUID> std_LLUUID;
	std_LLUUID mMarkAsUnloaded;
};

#endif
