public class GrandExchangeOfferChanged extends ObjectAn event where a
GrandExchangeOfferhas been updated with new information.
When the client initially logs in, this event is called for all grand exchange slots with the
GrandExchangeOfferState.EMPTYstate, regardless of whether any slots have offers. Once the exchange is initialized, the client then updates any offers with items as it receives information from the server.
GrandExchangeOfferStatefor potential states an offer can change into.