# Name: showLoop
# Desc: MainLoop for displaying text menu and handling input
# In:   loopMax - max number of looping
# Out:  None
sub showLoop {
  my ($self,$loopMax) = (@_);
  
  my $loopNum = 0;
  while (1) {
    # clear screen
    clearScreen();

    # display menu
    print "\n    $self->{'title'}\n\n";
    foreach my $item (@{$self->{"itemsRef"}}) {
      my $label = $item->getLabel();
      print "        $label\n";
    }
    print "\n    Select an option or quit [q]: ";
  
    # handle user response
    my $resp = $self->getResponse();
    if ($resp =~ /^[qQ]$/) {
      last;
    } else {
      $self->handleResponse($resp);
    }
    $loopNum++;
    if ((defined $loopMax) && ($loopNum >= $loopMax)) {
      last;
    }
    
    # flush stdout and stdin
    autoflush STDOUT,1;
    # how to flush/empty stdin without blocking?
        
    # continue
    print "\n    Return continues\n";
    <STDIN>;
  }
}