RobertLarson

class BlogObserver;

class BlogSubject
{
public:
	virtual ~BlogSubject() {}
	virtual void Subscribe(BlogObserver * observer) = 0;
	virtual void Unsubscribe(BlogObserver * observer) = 0;
	virtual void Notify() = 0;
};

RobertLarson

class BlogObserver
{
public:
	virtual ~BlogObserver() {}

	virtual void BlogUpdate() = 0;
};

RobertLarson

#include "BlogObserver.h"

class MyBlog;

class Boss : public BlogObserver {
public:
	Boss(MyBlog * blog);
	virtual ~Boss();

	virtual void BlogUpdate();

RobertLarson

#include "Boss.h"

#include "MyBlog.h"
#include "StringData.h"

#include <iostream>
#include <string>

Boss::Boss(MyBlog * blog)
: m_pBlog(blog)

RobertLarson

#include "BlogObserver.h"

class MyBlog;

class CoWorker : public BlogObserver {
public:
	CoWorker(MyBlog * blog);
	virtual ~CoWorker();

	virtual void BlogUpdate();

RobertLarson

#include "CoWorker.h"

#include "MyBlog.h"
#include "StringData.h"

#include <iostream>
#include <string>

CoWorker::CoWorker(MyBlog * blog)
: m_pBlog(blog)

RobertLarson

#include "BlogObserver.h"

class MyBlog;

class Friend : public BlogObserver {
public:
	Friend(MyBlog * blog);
	virtual ~Friend();

	virtual void BlogUpdate();

RobertLarson

#include "Friend.h"


#include "MyBlog.h"
#include "StringData.h"

#include <iostream>
#include <string>

Friend::Friend(MyBlog * blog)

RobertLarson

#include "BlogSubject.h"
#include "StringData.h"

#include <pthread.h>

#include <string>
#include <vector>

class MyBlog : public BlogSubject {
public:

RobertLarson

#include "MyBlog.h"

#include "BlogObserver.h"

MyBlog::MyBlog()
: m_pBlogData(new BlogData())
{
   pthread_mutex_init(&m_mutex, NULL);
}