@Override
  public void displayMessage(String from, String message) {
    ConversationPanel panel = conversations.get(from);
    Friend friend = client.getLoggedInUser().getFriendByUsername(from);
    if (panel == null) {
      openConversationWindowFor(from, friend.getName());
      panel = conversations.get(from);
    }
    panel.writeMessage(friend.getName(), message);
  }