Mediator (C ++ implementation)

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The following is a simple implementation: (reprinted)

Class Mediator;

Class colleage
{
Public:
Virtual ~ Colleage (){};
Virtual void action () = 0;
Virtual void setstate (const string & SD) = 0;
Virtual string getstate () = 0;
Protected:
Colleage (){};
Colleage (mediator * MDT) {This-> m_mdt = MDT ;};
Mediator * m_mdt;
};

Class concretecolleagea: Public colleage
{
Public:
Concretecolleagea (){};
Concretecolleagea (mediator * MDT): colleage (MDT ){}
~ Concretecolleagea (){};
Void setstate (const string & SD) {m_sd = SD ;}
String getstate () {return m_sd ;}
Void action ();
PRIVATE:
String m_sd;
}; Class concretecolleageb: Public colleage
{
Public:
Concretecolleageb (){};
Concretecolleageb (mediator * MDT): colleage (MDT ){}
~ Concretecolleageb (){};
Void setstate (const string & SD) {m_sd = SD ;};
String getstate () {return m_sd ;}
Void action ();
PRIVATE:
String m_sd;
}; Class Mediator
{
Public:
Virtual ~ Mediator (){};
Virtual void doactionfromatob () = 0;
Virtual void doactionfrombtoa () = 0;
Protected:
Mediator (){};
}; Class concretemediator: public mediator
{
Public:
Concretemediator (){};
Concretemediator (colleage * linoleic, colleage * CLB) {m_linoleic = linoleic; m_clb = CLB ;};
~ Concretemediator (){};
Void setcona (colleage * linoleic) {m_linoleic = linoleic ;}
Void setconb (colleage * CLB) {m_clb = CLB ;}
Colleage * getcona () {return m_linoleic ;}
Colleage * getconb () {return m_clb ;}
Void doactionfromatob () {m_clb-> setstate (m_linoleic-> getstate ());}
Void doactionfrombtoa () {m_linoleic-> setstate (m_clb-> getstate ());}
Void introcolleage (colleage * linoleic, colleage * CLB)
{
M_linoleic = linoleic; m_clb = CLB;
}
PRIVATE:
Colleage * m_linoleic;
Colleage * m_clb;
}; Void concretecolleagea: Action ()
{
M_mdt-> doactionfromatob ();
Cout <"Conb" <this-> getstate () <Endl;
} Void concretecolleageb: Action ()
{
M_mdt-> doactionfrombtoa ();
Cout <"cona" <this-> getstate () <Endl;
} Void main ()
{
Concretemediator * m = new concretemediator ();
Concretecolleagea * C1 = new concretecolleagea (m );
Concretecolleageb * C2 = new concretecolleageb (m );
M-> introcolleage (C1, C2); C1-> setstate ("jackill ");
C1-> action ();
C2-> setstate ("rukawa ");
C2-> action ();
Cout <Endl; C1-> setstate ("new ");
C1-> action ();
C2-> action ();
Cout <Endl;
}