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/**
* @file llrecentpeople.h
* @brief List of people with which the user has recently interacted.
*
* $LicenseInfo:firstyear=2009&license=viewergpl$
*
* Copyright (c) 2009, 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_LLRECENTPEOPLE_H
#define LL_LLRECENTPEOPLE_H
#include "llevent.h"
#include "llsingleton.h"
#include "lluuid.h"
#include <vector>
#include <set>
#include <boost/signal.hpp>
/**
* List of people the agent recently interacted with.
*
* Includes: anyone with whom the user IM'd or called
* (1:1 and ad-hoc but not SL Group chat),
* anyone with whom the user has had a transaction
* (inventory offer, friend request, etc),
* and anyone that has chatted within chat range of the user in-world.
*
*TODO: purge least recently added items?
*/
class LLRecentPeople: public LLSingleton<LLRecentPeople>, public LLOldEvents::LLSimpleListener
{
LOG_CLASS(LLRecentPeople);
public:
typedef boost::signal<void ()> signal_t;
/**
* Add specified avatar to the list if it's not there already.
*
* @param id avatar to add.
* @return false if the avatar is in the list already, true otherwisr
*/
bool add(const LLUUID& id);
/**
* @param id avatar to search.
* @return true if the avatar is in the list, false otherwise.
*/
bool contains(const LLUUID& id) const;
/**
* Get the whole list.
*
* @param result where to put the result.
*/
void get(std::vector<LLUUID>& result) const;
/**
* Set callback to be called when the list changed.
*
* Multiple callbacks can be set.
*
* @return no connection; use boost::bind + boost::signal::trackable to disconnect slots.
*/
void setChangedCallback(const signal_t::slot_type& cb) { mChangedSignal.connect(cb); }
/**
* LLSimpleListener interface.
*/
/*virtual*/ bool handleEvent(LLPointer<LLOldEvents::LLEvent> event, const LLSD& userdata);
private:
std::set<LLUUID> mList;
signal_t mChangedSignal;
};
#endif // LL_LLRECENTPEOPLE_H
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