/** 
 * @file lllandmarklist.h
 * @brief Landmark asset list class
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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_LLLANDMARKLIST_H
#define LL_LLLANDMARKLIST_H

#include <boost/function.hpp>
#include <map>
#include "lllandmark.h"
#include "lluuid.h"
#include "llassetstorage.h"

class LLMessageSystem;
class LLLineEditor;
class LLInventoryItem;

class LLLandmarkList
{
public:
	typedef boost::function<void(LLLandmark*)> loaded_callback_t;

	LLLandmarkList() {}
	~LLLandmarkList();

	//S32					getLength() { return mList.getLength(); }
	//const LLLandmark*	getFirst()	{ return mList.getFirstData(); }
	//const LLLandmark*	getNext()	{ return mList.getNextData(); }

	BOOL assetExists(const LLUUID& asset_uuid);
	LLLandmark* getAsset(const LLUUID& asset_uuid, loaded_callback_t cb = NULL);
	static void processGetAssetReply(
		const LLUUID& uuid,
		LLAssetType::EType type,
		void* user_data,
		S32 status,
		LLExtStat ext_status );

	// Returns TRUE if loading the landmark with given asset_uuid has been requested
	// but is not complete yet.
	BOOL isAssetInLoadedCallbackMap(const LLUUID& asset_uuid);

protected:
	void onRegionHandle(const LLUUID& landmark_id);
	void eraseCallbacks(const LLUUID& landmark_id);
	void makeCallbacks(const LLUUID& landmark_id);

	typedef std::map<LLUUID, LLLandmark*> landmark_list_t;
	landmark_list_t mList;

	typedef std::set<LLUUID> landmark_uuid_list_t;
	landmark_uuid_list_t mBadList;
	landmark_uuid_list_t mWaitList;

	typedef std::map<LLUUID,F32> landmark_requested_list_t;
	landmark_requested_list_t mRequestedList;
	
	// *TODO: make the callback multimap a template class and make use of it
	// here and in LLLandmark.
	typedef std::multimap<LLUUID, loaded_callback_t> loaded_callback_map_t;
	loaded_callback_map_t mLoadedCallbackMap;
};


extern LLLandmarkList gLandmarkList;

#endif  // LL_LLLANDMARKLIST_H
