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/**
 * @file llmaterialmgr.h
 * @brief Material manager
 *
 * $LicenseInfo:firstyear=2006&license=viewerlgpl$
 * 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_LLMATERIALMGR_H
#define LL_LLMATERIALMGR_H

#include "llmaterial.h"
#include "llmaterialid.h"
#include "llsingleton.h"

class LLViewerRegion;

class LLMaterialMgr : public LLSingleton<LLMaterialMgr>
{
	friend class LLSingleton<LLMaterialMgr>;
protected:
	LLMaterialMgr();
	virtual ~LLMaterialMgr();

public:
	typedef std::map<LLMaterialID, LLMaterialPtr> material_map_t;

	typedef boost::signals2::signal<void (const LLMaterialID&, const LLMaterialPtr)> get_callback_t;

	const LLMaterialPtr         get(const LLUUID& region_id, const LLMaterialID& material_id);
	boost::signals2::connection get(const LLUUID& region_id, const LLMaterialID& material_id, get_callback_t::slot_type cb);

	typedef boost::signals2::signal<void (const LLUUID&, const material_map_t&)> getall_callback_t;
	void                        getAll(const LLUUID& region_id);
	boost::signals2::connection getAll(const LLUUID& region_id, getall_callback_t::slot_type cb);
	void put(const LLUUID& object_id, const U8 te, const LLMaterial& material);
	void remove(const LLUUID& object_id, const U8 te);

protected:
	void clearGetQueues(const LLUUID& region_id);
	bool isGetPending(const LLUUID& region_id, const LLMaterialID& material_id) const;
	bool isGetAllPending(const LLUUID& region_id) const;
	void markGetPending(const LLUUID& region_id, const LLMaterialID& material_id);
	const LLMaterialPtr setMaterial(const LLUUID& region_id, const LLMaterialID& material_id, const LLSD& material_data);

	static void onIdle(void*);
	void processGetQueue();
	void onGetResponse(bool success, const LLSD& content, const LLUUID& region_id);
	void processGetAllQueue();
	void onGetAllResponse(bool success, const LLSD& content, const LLUUID& region_id);
	void processPutQueue();
	void onPutResponse(bool success, const LLSD& content);
	void onRegionRemoved(LLViewerRegion* regionp);

protected:
	typedef std::set<LLMaterialID> material_queue_t;
	typedef std::map<LLUUID, material_queue_t> get_queue_t;
	get_queue_t        mGetQueue;
	typedef std::pair<const LLUUID, LLMaterialID> pending_material_t;
	typedef std::map<const pending_material_t, F64> get_pending_map_t;
	get_pending_map_t  mGetPending;
	typedef std::map<LLMaterialID, get_callback_t*> get_callback_map_t;
	get_callback_map_t mGetCallbacks;

	typedef std::set<LLUUID> getall_queue_t;
	getall_queue_t        mGetAllQueue;
	getall_queue_t        mGetAllRequested;
	typedef std::map<LLUUID, F64> getall_pending_map_t;
	getall_pending_map_t  mGetAllPending;
	typedef std::map<LLUUID, getall_callback_t*> getall_callback_map_t;
	getall_callback_map_t mGetAllCallbacks;

	typedef std::map<U8, LLMaterial> facematerial_map_t;
	typedef std::map<LLUUID, facematerial_map_t> put_queue_t;
	put_queue_t mPutQueue;

	material_map_t mMaterials;
};

#endif // LL_LLMATERIALMGR_H