/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2014 Ceetron Solutions AS
// 
//  <APPLICATION_NAME> is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
// 
//  <APPLICATION_NAME> 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 at <http://www.gnu.org/licenses/gpl.html> 
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#pragma once

#include <vector>


namespace caf
{
    class PdmObjectHandle;


//==================================================================================================
//
// 
//
//==================================================================================================
class DataModelObserver
{
public:
    virtual void handleModelNotification(caf::PdmObjectHandle* itemThatChanged) = 0;
    virtual void handleModelSelectionChange() = 0;
};


//==================================================================================================
//
// 
//
//==================================================================================================
class NotificationCenter
{
public:
    NotificationCenter();
    ~NotificationCenter();

    void    registerObserver(DataModelObserver* observer);
    void    removeObserver(DataModelObserver* observer);

    void    notifyObservers();
    void    notifyObserversOfDataChange(caf::PdmObjectHandle* itemThatChanged);
    void    notifyObserversOfSelectionChange();

private:
    std::vector<DataModelObserver*>  m_observers;
};



} // end namespace caf