ContextManager.h

/******************************************************************************
Este arquivo eh parte da implementacao do ambiente declarativo do middleware
Ginga (Ginga-NCL).

Direitos Autorais Reservados (c) 1989-2007 PUC-Rio/Laboratorio TeleMidia

Este programa eh software livre; voce pode redistribui-lo e/ou modificah-lo sob
os termos da Licenca Publica Geral GNU versao 2 conforme publicada pela Free
Software Foundation.

Este programa eh distribuido na expectativa de que seja util, porem, SEM
NENHUMA GARANTIA; nem mesmo a garantia implicita de COMERCIABILIDADE OU
ADEQUACAO A UMA FINALIDADE ESPECIFICA. Consulte a Licenca Publica Geral do
GNU versao 2 para mais detalhes.

Voce deve ter recebido uma copia da Licenca Publica Geral do GNU versao 2 junto
com este programa; se nao, escreva para a Free Software Foundation, Inc., no
endereco 59 Temple Street, Suite 330, Boston, MA 02111-1307 USA.

Para maiores informacoes:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
******************************************************************************
This file is part of the declarative environment of middleware Ginga (Ginga-NCL)

Copyright: 1989-2007 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.

This program 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 General Public License version 2 for more
details.

You should have received a copy of the GNU General Public License version 2
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

For further information contact:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
*******************************************************************************/

#ifndef _ContextManager_H_
#define _ContextManager_H_

#include "IContextManager.h"

#include "IContextListener.h"

#include "system/compat/SystemCompat.h"
using namespace ::br::pucrio::telemidia::ginga::core::system::compat;

#include "system/thread/Thread.h"
using namespace ::br::pucrio::telemidia::ginga::core::system::thread;

#include <set>
using namespace std;

namespace br {
namespace pucrio {
namespace telemidia {
namespace ginga {
namespace core {
namespace contextmanager {
  class ContextManager : public IContextManager {
    private:
        map<int, IGingaUser*> users;
        map<int, map<string, string>*> contexts;
        set<IContextListener*> ctxListeners;
        string usersUri, contextsUri;
        int curUserId;
        ISystemInfo* systemInfo;
        static IContextManager* _instance;
        ContextManager();

        pthread_mutex_t groupsMutex;

    public:
        ~ContextManager();
        static IContextManager* getInstance();

    private:
        void initializeUsers();
        void initializeContexts();

    public:
        void addContextVar(int userId, string varName, string varValue);
        void addUser(IGingaUser* newUser);
        void saveUsersAccounts();
        void saveUsersProfiles();
        void addContextListener(IContextListener* listener);
        void removeContextListener(IContextListener* listener);
        void setGlobalVar(string varName, string varValue);

    private:
        void saveProfile(FILE* fd, int userId, map<string, string>* profile);

    public:
        void setCurrentUserId(int userId);
        int getCurrentUserId();
        IGingaUser* getUser(int userId);

    private:
        map<string,string>* getUserMap(int userId);

    public:
        map<string,string>* getUserProfile(int userId);
        map<string, string>* getUsersNames();
        ISystemInfo* getSystemInfo();

    private:
        void listUsersNicks();
  };
}
}
}
}
}
}

#endif /*_ContextManager_H_*/