@Override
  public void messageReceived(MessageReceivedEvent evt) {
    if (isSMSEnabled && evt.getEventType() != MessageReceivedEvent.SMS_MESSAGE_RECEIVED) {
      return;
    }

    handle(evt, evt.getSourceContact().getProtocolProvider(), evt.getSourceContact().getAddress());
  }
    /**
     * Extract values from <tt>EventObject</tt>.
     *
     * @param source
     */
    public void update(EventObject source) {
      this.eventObject = source;

      if (source instanceof MessageDeliveredEvent) {
        MessageDeliveredEvent e = (MessageDeliveredEvent) source;

        this.contact = e.getDestinationContact();

        this.address = contact.getAddress();
        this.ppService = contact.getProtocolProvider();
        this.timestamp = e.getTimestamp();
      } else if (source instanceof MessageReceivedEvent) {
        MessageReceivedEvent e = (MessageReceivedEvent) source;

        this.contact = e.getSourceContact();

        this.address = contact.getAddress();
        this.ppService = contact.getProtocolProvider();
        this.timestamp = e.getTimestamp();
      } else if (source instanceof ChatRoomMessageDeliveredEvent) {
        ChatRoomMessageDeliveredEvent e = (ChatRoomMessageDeliveredEvent) source;

        this.room = e.getSourceChatRoom();

        this.address = room.getIdentifier();
        this.ppService = room.getParentProvider();
        this.timestamp = e.getTimestamp();
      } else if (source instanceof ChatRoomMessageReceivedEvent) {
        ChatRoomMessageReceivedEvent e = (ChatRoomMessageReceivedEvent) source;

        this.room = e.getSourceChatRoom();

        this.address = room.getIdentifier();
        this.ppService = room.getParentProvider();
        this.timestamp = e.getTimestamp();
      }
    }