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#include <string>
class Colleague;
class Mediator;
class ConcreteMediator;
class ConcreteColleague1;
class ConcreteColleague2;
class Mediator
{
public:
virtual void Send(std::string const& message, Colleague *colleague) const = 0;
};
class Colleague
{
protected:
Mediator* mediator_;
public:
explicit Colleague(Mediator *mediator):mediator_(mediator)
{
}
};
class ConcreteColleague1:public Colleague
{
public:
explicit ConcreteColleague1(Mediator* mediator):Colleague(mediator)
{
}
void Send(std::string const& message)
{
mediator_->Send(message, this);
}
void Notify(std::string const& message)
{
std::cout << "Colleague1 gets message '" << message << "'" << std::endl;
}
};
class ConcreteColleague2:public Colleague
{
public:
explicit ConcreteColleague2(Mediator *mediator):Colleague(mediator)
{
}
void Send(std::string const& message)
{
mediator_->Send(message, this);
}
void Notify(std::string const& message)
{
std::cout << "Colleague2 gets message '" << message << "'" << std::endl;
}
};
class ConcreteMediator:public Mediator
{
protected:
ConcreteColleague1 *m_Colleague1;
ConcreteColleague2 *m_Colleague2;
public:
void SetColleague1(ConcreteColleague1 *c)
{
m_Colleague1=c;
}
void SetColleague2(ConcreteColleague2 *c)
{
m_Colleague2=c;
}
virtual void Send(std::string const& message, Colleague *colleague) const
{
if (colleague==m_Colleague1)
{
m_Colleague2->Notify(message);
}
else if (colleague==m_Colleague2)
{
m_Colleague1->Notify(message);
}
}
};
int main()
{
ConcreteMediator m;
ConcreteColleague1 c1(&m);
ConcreteColleague2 c2(&m);
m.SetColleague1(&c1);
m.SetColleague2(&c2);
c1.Send("How are you?");
c2.Send("Fine, thanks");
std::cin.get();
return 0;
}
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