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/** 
 * @file llprimtexturelist.h
 * @brief LLPrimTextureList (virtual) base class
 *
 * $LicenseInfo:firstyear=2008&license=viewergpl$
 * 
 * Copyright (c) 2008-2010, Linden Research, Inc.
 * 
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 * 
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 * 
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 * 
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

#ifndef LL_LLPRIMTEXTURELIST_H
#define LL_LLPRIMTEXTURELIST_H

#include <vector>
#include "lluuid.h"
#include "v3color.h"
#include "v4color.h"


class LLTextureEntry;

// this is a list of LLTextureEntry*'s because in practice the list's elements
// are of some derived class: LLFooTextureEntry
typedef std::vector<LLTextureEntry*> texture_list_t;

class LLPrimTextureList
{
public:
	// the LLPrimTextureList needs to know what type of LLTextureEntry 
	// to generate when it needs a new one, so we may need to set a 
	// callback for generating it, (or else use the base class default: 
	// static LLPrimTextureEntry::newTextureEntry() )
	//typedef LLTextureEntry* (__stdcall *NewTextureEntryFunction)();
	//static NewTextureEntryFunction sNewTextureEntryCallback;
	static LLTextureEntry* newTextureEntry();
	static void setNewTextureEntryCallback( LLTextureEntry* (*callback)() );
	static LLTextureEntry* (*sNewTextureEntryCallback)(); 

	LLPrimTextureList();
	virtual ~LLPrimTextureList();

	void clear();

	// clears current entries
	// copies contents of other_list
	// this is somewhat expensive, so it must be called explicitly
	void copy(const LLPrimTextureList& other_list);

	// clears current copies
	// takes contents of other_list
	// clears other_list
	void take(LLPrimTextureList& other_list);

	// copies LLTextureEntry 'te'
	// returns TEM_CHANGE_TEXTURE if successful, otherwise TEM_CHANGE_NONE
	S32 copyTexture(const U8 index, const LLTextureEntry& te);

	// takes ownership of LLTextureEntry* 'te'
	// returns TEM_CHANGE_TEXTURE if successful, otherwise TEM_CHANGE_NONE
	// IMPORTANT! -- if you use this function you must check the return value
	S32 takeTexture(const U8 index, LLTextureEntry* te);

//	// copies contents of 'entry' and stores it in 'index' slot
//	void copyTexture(const U8 index, const LLTextureEntry* entry);

	// returns pointer to texture at 'index' slot
	LLTextureEntry* getTexture(const U8 index) const;

	S32 setID(const U8 index, const LLUUID& id);
	S32 setColor(const U8 index, const LLColor3& color);
	S32 setColor(const U8 index, const LLColor4& color);
	S32 setAlpha(const U8 index, const F32 alpha);
	S32 setScale(const U8 index, const F32 s, const F32 t);
	S32 setScaleS(const U8 index, const F32 s);
	S32 setScaleT(const U8 index, const F32 t);
	S32 setOffset(const U8 index, const F32 s, const F32 t);
	S32 setOffsetS(const U8 index, const F32 s);
	S32 setOffsetT(const U8 index, const F32 t);
	S32 setRotation(const U8 index, const F32 r);
	S32 setBumpShinyFullbright(const U8 index, const U8 bump);
	S32 setMediaTexGen(const U8 index, const U8 media);
	S32 setBumpMap(const U8 index, const U8 bump);
	S32 setBumpShiny(const U8 index, const U8 bump_shiny);
	S32 setTexGen(const U8 index, const U8 texgen);
	S32 setShiny(const U8 index, const U8 shiny);
	S32 setFullbright(const U8 index, const U8 t);
	S32 setMediaFlags(const U8 index, const U8 media_flags);
	S32 setGlow(const U8 index, const F32 glow);

	S32 size() const;

//	void forceResize(S32 new_size);
	void setSize(S32 new_size);

	void setAllIDs(const LLUUID& id);
protected:
	texture_list_t mEntryList;
private:
	LLPrimTextureList(const LLPrimTextureList& other_list)
	{
		// private so that it can't be used
	}
};

#endif