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Observer (návrhový vzor)
Adam Ďuriš II.A
Na čo sa používa ?
▪ Observer (pozorovateľ) sa používa v situáciach, kedy chceme aby
nejaké objekty dostávali informácie o zmene stavu iného objektu a
zároveň aby sme mali možnosť zabehu ovplyvňovať, ktoré objekty to
budú.
Kľúčové časti
▪ Pozorovateľ – Objekt, ktorého zmeny pozorujeme.Obsahuje
množinu pozorovateľov a umožňuje ich správu pridávať ( attach )
a odoberať ( detach ). Objekt upozorní všetkých pozorovateľov na
každú zmenu svojho stavu.
▪ Pozorovaný – Objekt, ktorý dostáva informáciu o zmene stavu
pozorovaného objektu.
Štruktúra vzoru Observer
Pozorovatelia
Pozorovaný
Main
Zdroje
▪ https://www.youtube.com/watch?v=3vkA3k8h6uw
▪ http://voho.eu/wiki/observer/
▪ https://www.itnetwork.sk/navrh/navrhovy-vzor/gof/gof-vzory-
spravanie/observer-pozorovatel-navrhovy-vzor
▪ https://cs.wikipedia.org/wiki/Observer_(n%C3%A1vrhov%C3%BD_vz
or)
Ďakujem za pozornosť

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Observer (návrhový vzor).pptx