# The LearningOnline Network with CAPA
# iimage click response style

package Apache::imageresponse;
use strict;

sub BEGIN {
  &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
}

sub start_imageresponse {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  #when in a radiobutton response use these
  &Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle'));
  my $id = &Apache::response::start_response($parstack,$safeeval);
  return '';
}

sub end_imageresponse {
  &Apache::response::end_response;
  return '';
}

%Apache::response::foilgroup={};
sub start_foilgroup {
  %Apache::response::foilgroup={};
  return '';
}

sub setrandomnumber {
  my $rndseed=&Apache::lonnet::rndseed();
  $rndseed=unpack("%32i",$rndseed);
  $rndseed=$rndseed
    +&Apache::lonnet::numval($Apache::inputtags::part)
      +&Apache::lonnet::numval($Apache::inputtags::response['-1']);
  srand($rndseed);
  return '';
}

sub end_foilgroup {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  
}

sub start_conceptgroup {
}

sub end_conceptgroup {
}

$Apache::imageresponse::curname='';
sub start_foil {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  if ($target eq 'web' || $target eq 'grade') {
    my $args ='';
    if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
    my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);
    push @{ $Apache::response::foilgroup{'names'} }, $name;
    $Apache::imageresponse::curname=$name;
  }
  return '';
}

sub end_foil {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  return '';
}

sub start_text {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  if ($target eq 'web') { 
    $Apache::lonxml::redirection--; 
  }
  return '';
}

sub end_text {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  if ($target eq 'web') {
    my $name = $Apache::imageresponse::curname;
    $Apache::response::foilgroup{"$name.text"} = $Apache::lonxml::outputstack;
    if ($target eq 'web' ) {
      $Apache::lonxml::redirection++;
      if ($Apache::lonxml::redirection == 1) { 
	$Apache::lonxml::outputstack=''; 
      }
    }
  }
  return '';
}

sub start_image {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  
}

sub end_image {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
}

sub start_rectangle {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
}

sub end_rectangle {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
}
1;
__END__