GUISubject.h

/*
* Copyright (C) TES Electronic Solutions GmbH,
* All Rights Reserved.
* Contact: info@guiliani.de
*
* This file is part of the Guiliani HMI framework
* for the development of graphical user interfaces on embedded systems.
*/
 
#ifndef GUISUBJECT__H_
#define GUISUBJECT__H_
 
#include "eC_TList_doubleLinked.h"
#include "eC_String.h"
#include "GUIValue.h"
 
class CGUIObserver;
class CGUIObject;
 
 
class CGUISubject
{
    friend class CGUIObserver; 
 
public:
 
    CGUISubject();
 
    virtual ~CGUISubject();
 
    void AddObserver(CGUIObserver *pObserver);
 
    void RemoveObserver (CGUIObserver *pObserver);
 
    void ClearObservers();
 
    void NotifyObservers ();
 
    void NotifyObservers (const eC_String& kMessage);
 
    void NotifyObservers (const CGUIObject* const pkUpdatedObject);
 
    void NotifyObservers (const CGUIValue& kObservedValue, const CGUIObject* const pkUpdatedObject, const eC_UInt uiX=0, const eC_UInt uiY=0);
 
    const eC_TListDoubleLinked <CGUIObserver*>& GetObserverList() const
    {
        return m_pObserverList;
    }
 
private:
 
    void NotifyOfObserverDestruction(CGUIObserver *pObserver);
 
    CGUISubject(const CGUISubject& kSource);
 
    CGUISubject& operator=(const CGUISubject& kSource);
 
    eC_TListDoubleLinked <CGUIObserver*> m_pObserverList;
};
 
#endif