/** * Utility method throwing an exception if the stack is not properly initialized. * * @throws java.lang.IllegalStateException if the underlying stack is not registered and * initialized. */ private void assertConnected() throws IllegalStateException { if (jabberProvider == null) throw new IllegalStateException( "The provider must be non-null and signed on the " + "service before being able to send a file."); else if (!jabberProvider.isRegistered()) { // if we are not registered but the current status is online // change the current status if (opSetPersPresence.getPresenceStatus().isOnline()) { opSetPersPresence.fireProviderStatusChangeEvent( opSetPersPresence.getPresenceStatus(), jabberProvider.getJabberStatusEnum().getStatus(JabberStatusEnum.OFFLINE)); } throw new IllegalStateException( "The provider must be signed on the service before " + "being able to send a file."); } }