Subject |
obse<vers | ||
Attach(Observer) Detacłt(Observer) NotHvfl «______ | |||
for ;il o m obson/ors o->Update() | |||
subject
return subjectState
ConcrctcSubject
GctSlatoO o-SetStateO
subjectState
Observer | |
UpdateO |
5
ConcreteObserver
UpdaleO o— ■■
obseryerState = subject~>GetState()
obsor/erState