public static void handleAction(String params) {
        if ( getActiveTab() instanceof ServerTab ) {
            showNotActiveChannelWarning();
            return;
        }

        if ( params.isEmpty() )
            params = "neumí používat IRC klienta."; // :)

        String channel = getActiveTab().getTabName();
        getCurrentServerTab().getConnection().sendAction(channel, params);

        String nick = getCurrentServerTab().getConnection().getNick();
        getActiveTab().appendText( HTML.italic(nick + " " + params) );
        clearInput();
    }