NotificationBoard.h

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//
// Copyright (C) 2005 Andras Varga
//
// This program 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; either version 2
// of the License, or (at your option) any later version.
//
// 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
//


#ifndef __INET_NOTIFICATIONBOARD_H
#define __INET_NOTIFICATIONBOARD_H

#include <omnetpp.h>
#include <map>
#include <vector>
#include "ModuleAccess.h"
#include "INotifiable.h"
#include "NotifierConsts.h"

class INET_API NotificationBoard : public cSimpleModule
{
  public: // should be protected
    typedef std::vector<INotifiable *> NotifiableVector;
    typedef std::map<int, NotifiableVector> ClientMap;
    friend std::ostream& operator<<(std::ostream&, const NotifiableVector&); // doesn't work in MSVC 6.0

  protected:
    ClientMap clientMap;

  protected:
    virtual void initialize();

    virtual void handleMessage(cMessage *msg);

  public:
    virtual void subscribe(INotifiable *client, int category);

    virtual void unsubscribe(INotifiable *client, int category);

    virtual bool hasSubscribers(int category);

    virtual void fireChangeNotification(int category, const cPolymorphic *details=NULL);
};

class INET_API NotificationBoardAccess : public ModuleAccess<NotificationBoard>
{
  public:
    NotificationBoardAccess() : ModuleAccess<NotificationBoard>("notificationBoard") {}
};

#endif