Represents the Subject to the observers. This is the minimum needed by observers to get access to the data provided by the Subject class. More...

#include <ObserverSubject_NumberProducer.h>

Inheritance diagram for INumberProducer:

Collaboration diagram for INumberProducer:

Public Types
using	shared_ptr_t = std::shared_ptr< INumberProducer >
	Alias to make it easier to use this shared pointer.

Public Member Functions
virtual	~INumberProducer ()
	Virtual destructor required for interfaces in abstract classes.

virtual void	Update ()=0
	Update the number then notify all observers.

virtual uint32_t	FetchNumber ()=0
	Return the current value from the Subject.

Detailed Description

Represents the Subject to the observers. This is the minimum needed by observers to get access to the data provided by the Subject class.

An interface is used to represent the Subject to the observers so the observers do not have too much knowledge about the Subject, allowing more freedom to change the Subject class implementation without affecting observers. This interface would naturally have to change if the observers needed more data from the Subject.

Definition at line 107 of file ObserverSubject_NumberProducer.h.