Pattern · Core

Mediator

Stop components from referencing each other directly; route all their interaction through ONE mediator — turning a tangled web (N×N) into a clean hub (N).

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step 1 / 7
1/2Everyone wired to everyone
Button
Checkbox
TextField
Label
Everyone wired to everyone
 1class Button    { Checkbox c; TextField t; Label l; ... }
 2class Checkbox  { TextField t; Label l; ... }
 3class TextField { Label l; ... }   // every widget knows the rest
State
linksa tangled mesh
✦

Four widgets in a dialog — Button, Checkbox, TextField, Label — each holding direct references to the others. Every line is one widget reaching into another.