private void saveSettings() throws InvalidAttributeValueException {
if (userForm.getNickname().isEmpty())
throw new InvalidAttributeValueException("Přezdívka musí být vyplněna");
else if (userForm.getUsername().isEmpty())
throw new InvalidAttributeValueException("Uživatelské jméno musí být vyplněno");
settings.setUserProperty("nickname", userForm.getNickname());
settings.setUserProperty("altnickname", userForm.getAltNickname());
settings.setUserProperty("username", userForm.getUsername());
settings.setUserProperty("realname", userForm.getRealname());
settings.setUserProperty("email", userForm.getEmail());
settings.setEventEnabled("log-chat", eventsForm.isLogChatChecked());
settings.setEventEnabled("rejoin-after-kick", eventsForm.isRejoinChecked());
settings.setEventEnabled("clickable-links", eventsForm.isClickableLinksChecked());
settings.setEventEnabled("ask-for-quit", eventsForm.isAskForQuitChecked());
settings.setViewEnabled("display-topic", viewForm.isDisplayTopicChecked());
settings.setViewEnabled("timestamp-enabled", viewForm.isTimestampEnabled());
settings.setViewTimestampFormat(viewForm.getTimestampFormat());
settings.setBlockedNicknames(blockedForm.getBlockedNicknames());
settings.store();
}
