Design Pattern Examples
Overview of object-oriented design patterns
Observer_NumberProducer.h
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1
8
9#pragma once
10#ifndef __OBSERVER_NUMBERPRODUCER_H__
11#define __OBSERVER_NUMBERPRODUCER_H__
12
13#include "Observer_NumberChangedFunctionList.h"
14
22typedef struct
23{
27 uint32_t number;
28
32 NumberChangedFunctionList observerList;
33} NumberProducer;
34
43NumberProducer* NumberProducer_Create(uint32_t number);
44
50void NumberProducer_Destroy(NumberProducer* producer);
51
68bool NumberProducer_SubscribeToNumberChanged(NumberProducer* producer, NumberChangedFunction observer);
69
76void NumberProducer_UnsubscribeFromNumberChanged(NumberProducer* producer, NumberChangedFunction observer);
77
82void NumberProducer_UpdateNumber(NumberProducer* producer);
83
84#endif //__OBSERVER_NUMBERPRODUCER_H__
85
Observer_NumberChangedFunctionList.h
Declaration of the NumberChangedFunctionList structure along with its support functions,...
NumberChangedFunction
void(* NumberChangedFunction)(uint32_t)
Alias for a function that receives notifications about a number change.
Definition: Observer_NumberChangedFunctionList.h:20
NumberProducer_SubscribeToNumberChanged
bool NumberProducer_SubscribeToNumberChanged(NumberProducer *producer, NumberChangedFunction observer)
Subscribe to the given NumberProducer to received changes to that producer's number....
Definition: Observer_NumberProducer.c:85
NumberProducer_UpdateNumber
void NumberProducer_UpdateNumber(NumberProducer *producer)
Update the number in the given NumberProducer object, triggering a call to all observer in the produc...
Definition: Observer_NumberProducer.c:119
NumberProducer_UnsubscribeFromNumberChanged
void NumberProducer_UnsubscribeFromNumberChanged(NumberProducer *producer, NumberChangedFunction observer)
Unsubscribe from the Given NumberProducer so the given observer will no longer be called when the pro...
Definition: Observer_NumberProducer.c:104
NumberProducer_Destroy
void NumberProducer_Destroy(NumberProducer *producer)
Destroy the given instance of a NumberProducer object. After this function returns,...
Definition: Observer_NumberProducer.c:73
NumberProducer_Create
NumberProducer * NumberProducer_Create(uint32_t number)
Create an instance of the NumberProducer structure and initialize the structure with the specified nu...
Definition: Observer_NumberProducer.c:54
NumberChangedFunctionList
Represents a dynamic list of function pointers of the type NumberChangedFunction.
Definition: Observer_NumberChangedFunctionList.h:27
NumberProducer
Represents the Subject in this example. In this case, a structure that contains a list of observers a...
Definition: Observer_NumberProducer.h:23
NumberProducer::observerList
NumberChangedFunctionList observerList
The list of observers subscribed to this class instance.
Definition: Observer_NumberProducer.h:32
NumberProducer::number
uint32_t number
The number being maintained.
Definition: Observer_NumberProducer.h:27