This chapter covers the Mediator pattern.
GoF Definition
It defines an object that encapsulates how a set of objects interact. The Mediator pattern promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently.
Concept
A mediator is an intermediary through whom different objects talk to each other. It takes responsibility for controlling and coordinating the interactions of a specific group of objects that cannot refer to each other explicitly. As a ...
