--- loncom/interface/statistics/lonstudentsubmissions.pm	2005/02/23 19:41:27	1.35
+++ loncom/interface/statistics/lonstudentsubmissions.pm	2010/09/12 17:37:24	1.54.10.2
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstudentsubmissions.pm,v 1.35 2005/02/23 19:41:27 matthew Exp $
+# $Id: lonstudentsubmissions.pm,v 1.54.10.2 2010/09/12 17:37:24 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -27,7 +27,7 @@
 package Apache::lonstudentsubmissions;
 
 use strict;
-use Apache::lonnet();
+use Apache::lonnet;
 use Apache::loncommon();
 use Apache::lonhtmlcommon();
 use Apache::loncoursedata();
@@ -37,6 +37,10 @@ use Apache::lonstathelpers;
 use HTML::Entities();
 use Time::Local();
 use Spreadsheet::WriteExcel();
+use Crypt::PasswdMD5;
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+  
 
 my @SubmitButtons = ({ name => 'SelectAnother',
                        text => 'Choose a different Problem' },
@@ -63,16 +67,18 @@ sub BuildStudentSubmissionsPage {
     my @Students = @Apache::lonstatistics::Students;
     #
     if (@Students < 1) {
-        $r->print('<h2>There are no students in the sections selected</h2>');
+        $r->print('<div class="LC_warning">'
+                 .&mt('There are no students in the sections selected.')
+                 .'</div>');
     }
     #
     my @CacheButtonHTML = 
         &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status',
-                                   '<h3>'.&mt('Loading student data').'</h3>');
+                                   '<div class="LC_info">'.&mt('Loading student data...').'</div>');
     $r->rflush();
     #
-    if (exists($ENV{'form.problemchoice'}) && 
-        ! exists($ENV{'form.SelectAnother'})) {
+    if (exists($env{'form.problemchoice'}) && 
+        ! exists($env{'form.SelectAnother'})) {
         foreach my $button (@SubmitButtons) {
             if ($button->{'name'} eq 'break') {
                 $r->print("<br />\n");
@@ -100,36 +106,60 @@ sub BuildStudentSubmissionsPage {
         # Get resource objects
         my $navmap = Apache::lonnavmaps::navmap->new();
         if (!defined($navmap)) {
-            $r->print('<h1>'.&mt("Internal error").'</h1>');
+            $r->print('<div class="LC_error">'.&mt("Internal error").'</div>');
             return;
         }
         my %already_seen;
-        my @Problems;
+        my (@Problems,$show_named);
+        unless (&Apache::loncommon::needs_gci_custom()) {
+            $show_named = 1;  
+        }
         foreach my $symb (@Symbs) {
             my $resource = $navmap->getBySymb($symb);
             push(@Problems,$resource);
         }
+        # If these are to be anonymized, do a random shuffle of @Students. 
+        unless ($show_named) {
+            &array_shuffle(\@Students);
+        }
+        my $threshold = $env{'course.'.$env{'request.course.id'}.'.internal.anonsurvey_threshold'};
+        if ($threshold eq '') {
+            my %domconfig =
+                &Apache::lonnet::get_dom('configuration',['coursedefaults'],
+                                        $env{'course.'.$env{'request.course.id'}.'.domain'});
+            if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
+                $threshold = $domconfig{'coursedefaults'}{'anonsurvey_threshold'};
+                if ($threshold eq '') {
+                    $threshold = 10;
+                }
+            } else {
+                $threshold = 10;
+            }
+        }
         # 
+        $r->print('<h4>'.
+                  &Apache::lonstatistics::section_and_enrollment_description().
+                  '</h4>');
         if (! scalar(@Problems) || ! defined($Problems[0])) {
             $r->print('resource is undefined');
+        } elsif (!$show_named && @Students < $threshold) {
+            $r->print(&mt('The number of students matching the selection criteria is too few for display of submission data for anonymous surveys.').'<br />'.&mt('There must be at least [quant,_1,student].',$threshold).' '.&mt('Contact a Domain Coordinator if you need the threshold to be changed for this course.'));
         } else {
             if (scalar(@Problems) == 1) {
                 my $resource = $Problems[0];
                 $r->print('<h1>'.$resource->title.'</h1>');
                 $r->print('<h3>'.$resource->src.'</h3>');
-                if ($ENV{'form.renderprob'} eq 'true') {
-                    $r->print(
-                              &Apache::lonstathelpers::render_resource({src => $resource->src})
-                              );
+                if ($env{'form.renderprob'} eq 'true') {
+                    $r->print(&Apache::lonstathelpers::render_resource($resource));
                     $r->rflush();
                 }
             }
-            if ($ENV{'form.output'} eq 'excel') {
-                &prepare_excel_output($r,\@Problems,\@Students);
-            } elsif ($ENV{'form.output'} eq 'csv') {
-                &prepare_csv_output($r,\@Problems,\@Students);
+            if ($env{'form.output'} eq 'excel') {
+                &prepare_excel_output($r,\@Problems,\@Students,$show_named);
+            } elsif ($env{'form.output'} eq 'csv') {
+                &prepare_csv_output($r,\@Problems,\@Students,$show_named);
             } else {
-                &prepare_html_output($r,\@Problems,\@Students);
+                &prepare_html_output($r,\@Problems,\@Students,$show_named);
             }
         }
         $r->print('<hr />');
@@ -141,26 +171,44 @@ sub BuildStudentSubmissionsPage {
                   &mt('Computing correct answers greatly increasese the amount of time required to prepare a report.').
                   '</p>');
         $r->print('<p>'.
-                  &mt('please select problems and use the <b>Prepare Report</b> button to continue.').
+                  &mt('Please select problems and use the [_1]Prepare Report[_2] button to continue.','<b>','</b>').
                   '</p>');
         $r->print(&Apache::lonstathelpers::MultipleProblemSelector
                   (undef,'problemchoice','Statistics'));
     }
 }
 
+sub array_shuffle {
+    my $array = shift;
+    return unless (ref($array) eq 'ARRAY');
+    my $i = scalar(@$array);
+    my $j;
+    foreach my $item (@$array) {
+        --$i;
+        $j = int(rand($i+1));
+        next if($i == $j);
+        @$array [$i,$j] = @$array[$j,$i];
+    }
+    return @$array;
+}
+
 ##
 ## get_extra_response_headers
 ##
+
 sub get_extra_response_headers {
+    my ($show_named) = @_;
     my @extra_resp_headers;
-    if ($ENV{'form.correctans'} eq 'true') {
+    if ($env{'form.correctans'} eq 'true') {
         push(@extra_resp_headers,'Correct');
-    } 
-    if ($ENV{'form.prob_status'} eq 'true') {
-        push(@extra_resp_headers,'Award Detail'); 
-        push(@extra_resp_headers,'Time');
-        push(@extra_resp_headers,'Attempt');
-        push(@extra_resp_headers,'Awarded');
+    }
+    if ($show_named) { 
+        if ($env{'form.prob_status'} eq 'true') {
+            push(@extra_resp_headers,'Award Detail'); 
+            push(@extra_resp_headers,'Time');
+            push(@extra_resp_headers,'Attempt');
+            push(@extra_resp_headers,'Awarded');
+        }
     }
     return @extra_resp_headers;
 }
@@ -189,6 +237,8 @@ sub get_headers {
             shift(@basic_headers);  # Get rid of 'Correct'
         }
         @headers = (@foils,@basic_headers);
+    } elsif (lc($resptype) eq 'task') {
+        @headers = ('Grader','Status',@basic_headers,'Submission');
     } else {
         @headers = ('Submission',@basic_headers);
     }
@@ -203,8 +253,9 @@ sub get_headers {
 #########################################################
 #########################################################
 sub prepare_html_output {
-    my ($r,$problems,$students) = @_;
+    my ($r,$problems,$students,$show_named) = @_;
     my $c = $r->connection();
+    my $salt = '$1$'.$Apache::lonnet::perlvar{'AnonymousSalt'};
     #
     # Set a flag for the case when there is just one problem
     my $single_response = 0;
@@ -214,10 +265,18 @@ sub prepare_html_output {
     }
     #
     # Compute the number of columns per response
-    my @extra_resp_headers = &get_extra_response_headers();
+    my @extra_resp_headers = &get_extra_response_headers($show_named);
     #
     # Create the table header
-    my @student_columns = ('username','domain','id');
+    my @student_columns;
+    if ($show_named) {
+        @student_columns = @Apache::lonstatistics::SelectedStudentData;
+        if (grep(/^all$/,@student_columns)) {
+            @student_columns = qw(fullname username domain id section status groups comments);
+        }
+    } else {
+        @student_columns = ('username');
+    }
     #
     my %headers;
     my $student_column_count = scalar(@student_columns);
@@ -257,11 +316,15 @@ sub prepare_html_output {
                     $headers{'response'} .=
                         '<th colspan="'.scalar(@headers).'">'.
                         &mt('Response [_1]',$responses->[$i]).'</th>';
-                    $headers{'student'}.= '<th>'.join('</th><th><nobr>',
+                    $headers{'student'}.= '<th><span class="LC_nobreak">'.
+                                          join('</span></th><th><span class="LC_nobreak">',
                                                       @headers).
-                                                          '</nobr></th>';
+                                                          '</span></th>';
                 }
             }
+            if ($part_span == 0) {
+                next;
+            }
             if (! $single_part) {
                 my $tmpname = $partid;
                 if ($partid =~/^\d+$/) {
@@ -273,7 +336,7 @@ sub prepare_html_output {
                 $headers{'part'} .= qq{<th colspan="$part_span">$tmpname</th>};
                 $nonempty_part_headers = 1;
             } else {
-                $headers{'part'} .= qq{<th colspan="$part_span">&nbsp</th>};
+                $headers{'part'} .= qq{<th colspan="$part_span">&nbsp;</th>};
             }
             $prob_span += $part_span;
         }
@@ -313,9 +376,25 @@ sub prepare_html_output {
             $count = 0;
         }
         last if ($c->aborted());
-        foreach my $field (@student_columns) {
-            $student_row_data .= 
-                '<td valign="top">'.$student->{$field}.'</td>';
+        if ($show_named) {
+            foreach my $field (@student_columns) {
+                $student_row_data .= '<td valign="top">';
+                # handle comments like in lonstudentassessment.pm
+                if($field eq 'comments') {
+                    $student_row_data .= 
+                        '<a href="/adm/'.$student->{'domain'}.'/'.
+                        $student->{'username'}.'/'.'aboutme#coursecomment">'.&mt('Comments').'</a>';
+                } else {
+                    $student_row_data .= $student->{$field};
+                }
+                $student_row_data .= '</td>';
+            }
+        } else {
+            my $anonid = &Crypt::PasswdMD5::unix_md5_crypt($student->{'username'},
+                                                           $salt);
+            $anonid = substr($anonid,length($salt)+1);
+            $student_row_data = '<td valign="top" colspan="'.$student_column_count.'">'.
+                                $anonid.'</td>';
         }
         #
         # Figure out what it is we need to output for this student
@@ -339,8 +418,9 @@ sub prepare_html_output {
                                                'html','normal',
                                                @extra_resp_headers);
                     my $width = scalar(@headers);
+                    next if ($width < 1);
                     my $resp_data;
-                    $resp_data->{'fake'} = qq{<td colspan="$width">&nbsp</td>};
+                    $resp_data->{'fake'} = qq{<td colspan="$width">&nbsp;</td>};
                     if (! defined($results)) {
                         $results = [];
                     }
@@ -349,7 +429,7 @@ sub prepare_html_output {
                         $maxrow = scalar(@$results);
                     }
                     for (my $j=scalar(@$results)-1;$j>=0;$j--) {
-                        if ($ENV{'form.all_sub'} ne 'true') {
+                        if ($env{'form.all_sub'} ne 'true') {
                             next if ($j ne scalar(@$results)-1);
                         }
                         my $response = &hashify_response($results->[$j],
@@ -364,6 +444,14 @@ sub prepare_html_output {
                                                      $response,
                                                      $single_response).
                                  '</td>');
+			} elsif (lc($resptype) eq 'task') {
+			    my $results = 
+				&html_task_results(\@headers,
+						   $prob,$partid,$respid,
+						   $response,$resptype);
+			    if ($results) {
+				push(@{$resp_data->{'real'}},$results);
+			    }
                         } else {
                             push(@{$resp_data->{'real'}},
                                  &html_non_essay_results(\@headers,
@@ -423,13 +511,14 @@ sub prepare_html_output {
             undef(@essays);
         }
     } # end of student loop
+    $r->print('</table>'.$/);
     return;
 }
 
 sub hashify_response {
     my ($response,$prob,$student,$partid,$respid) =@_;
     my $resp_hash = {};
-    if ($ENV{'form.correctans'} eq 'true') {
+    if ($env{'form.correctans'} eq 'true') {
         $resp_hash->{'Correct'} = 
             &Apache::lonstathelpers::get_student_answer
             ($prob,$student->{'username'},$student->{'domain'},
@@ -437,14 +526,27 @@ sub hashify_response {
     }
     $resp_hash->{'Submission'} = 
         $response->[&Apache::loncoursedata::RDs_submission()];
-    $resp_hash->{'Award Detail'} = 
-        $response->[&Apache::loncoursedata::RDs_awarddetail()];
     $resp_hash->{'Time'} = 
         $response->[&Apache::loncoursedata::RDs_timestamp()];
     $resp_hash->{'Attempt'} =
         $response->[&Apache::loncoursedata::RDs_tries()];
     $resp_hash->{'Awarded'} = 
         $response->[&Apache::loncoursedata::RDs_awarded()];
+    if ($prob->is_task()) {
+	$resp_hash->{'Grader'} = 
+	    $response->[&Apache::loncoursedata::RDs_response_eval_2()];
+	if ($resp_hash->{'Attempt'} eq '0') {
+	    $resp_hash->{'Attempt'} = '';
+	}
+	$resp_hash->{'Award Detail'} = 
+	    $response->[&Apache::loncoursedata::RDs_part_award()];
+	$resp_hash->{'Status'} = 
+	    $response->[&Apache::loncoursedata::RDs_response_eval()];
+    } else {
+	$resp_hash->{'Award Detail'} = 
+	    $response->[&Apache::loncoursedata::RDs_awarddetail()];
+    }
+
     return $resp_hash;
 }
 
@@ -468,7 +570,7 @@ sub html_essay_results {
         if (defined($respid)) {
             $id .= ' '.$respid;
         }
-        $Str .= '<nobr>'.$id.'</nobr>'.('&nbsp;'x4);
+        $Str .= '<span class="LC_nobreak">'.$id.'</span>'.('&nbsp;'x4);
     }
     #
     shift(@$headers); # Get rid of the Submission header
@@ -477,11 +579,11 @@ sub html_essay_results {
         $correct = &html_format_essay_sub($response->{'Correct'});
         shift(@$headers);
     }
-    $Str .= '<nobr>'.
+    $Str .= '<span class="LC_nobreak">'.
         join('',
              map {
                  ('&nbsp;'x4).&mt($_.': [_1]',$response->{$_});
-             } @$headers).'</nobr>';
+             } @$headers).'</span>';
     if (@$headers || ! $single_response) {
         $Str .= '<br />';
     }
@@ -507,20 +609,34 @@ sub html_format_essay_sub {
     return $submission;
 }
 
+sub html_task_results {
+    my ($headers,$prob,$partid,$respid,$response,$resptype) = @_;
+    if (! ref($headers) || ref($headers) ne 'ARRAY' || ! scalar(@$headers)) {
+        return '';
+    }
+
+    my @values;
+    @values = map { $response->{$_}; } @$headers;
+
+    my $td = '<td valign="top">';
+    my $str = $td.join('</td>'.$td,@values).'</td>';
+    return $str;
+}
+
 sub html_non_essay_results {
     my ($headers,$prob,$partid,$respid,$response,$resptype) = @_;
     if (! ref($headers) || ref($headers) ne 'ARRAY' || ! scalar(@$headers)) {
         return '';
     }
     # 
-    my $submission = &HTML::Entities::decode($response->{'Submission'});
+    my $submission = &HTML::Entities::decode(&unescape($response->{'Submission'})); 
     return '' if (! defined($submission) || $submission eq '');
     $submission =~ s/\\\"/\"/g;
     $submission =~ s/\\\'/\'/g;
     if ($resptype eq 'radiobutton') {
         $submission = &HTML::Entities::encode($submission,'<>&"');
         $submission =~ s/=([^=])$//;
-        $submission = '<nobr>'.$submission.'</nobr>';
+        $submission = '<span class="LC_nobreak">'.$submission.'</span>';
     }
     $response->{'Submission'} = $submission;
     #
@@ -528,14 +644,14 @@ sub html_non_essay_results {
     if ($resptype =~ /^(option|match|rank)$/) {
         my %submission = 
             map { 
-                my ($foil,$value) = split('=',&Apache::lonnet::unescape($_));
+                my ($foil,$value) = split('=',&unescape($_));
                 ($foil,$value);
             } split('&',$response->{'Submission'});
         my %correct;
         if (exists($response->{'Correct'})) {
             %correct = 
                 map { 
-                    my ($foil,$value)=split('=',&Apache::lonnet::unescape($_));
+                    my ($foil,$value)=split('=',&unescape($_));
                     ($foil,$value);
                 } split('&',$response->{'Correct'});
         }
@@ -553,6 +669,8 @@ sub html_non_essay_results {
                     $option = $submission{$header};
                 }
                 push(@values,&HTML::Entities::encode($option));
+            } elsif ($original_header eq 'Time') {
+                push(@values,&Apache::lonlocal::locallocaltime($response->{$original_header}));
             } else {
                 # A normal column
                 push(@values,$response->{$original_header});
@@ -575,8 +693,9 @@ sub html_non_essay_results {
 #########################################################
 #########################################################
 sub prepare_excel_output {
-    my ($r,$Problems,$Students) = @_;
+    my ($r,$Problems,$Students,$show_named) = @_;
     my $c = $r->connection();
+    my $salt = '$1$'.$Apache::lonnet::perlvar{'AnonymousSalt'};
     #
     #
     # Determine the number of columns in the spreadsheet
@@ -625,28 +744,15 @@ sub prepare_excel_output {
     $r->rflush();
     #
     # Create the excel spreadsheet
-    my $filename = '/prtspool/'.
-        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
-        time.'_'.rand(1000000000).'.xls';
-    my $workbook  = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
-    if (! defined($workbook)) {
-        $r->log_error("Error creating excel spreadsheet $filename: $!");
-        $r->print('<p>'.&mt("Unable to create new Excel file.  ".
-                            "This error has been logged.  ".
-                            "Please alert your LON-CAPA administrator").
-                  '</p>');
-        return undef;
-    }
-    #
-    $workbook->set_tempdir('/home/httpd/perl/tmp');
-    #
-    my $format = &Apache::loncommon::define_excel_formats($workbook);
+    my ($workbook,$filename,$format) = 
+        &Apache::loncommon::create_workbook($r);
+    return if (! defined($workbook));
     my $worksheet  = $workbook->addworksheet('Student Submission Data');
     #
     # Add headers to the worksheet
     my $rows_output = 0;
     $worksheet->write($rows_output++,0,
-                    $ENV{'course.'.$ENV{'request.course.id'}.'.description'},
+                    $env{'course.'.$env{'request.course.id'}.'.description'},
                       $format->{'h1'});
     $rows_output++;
     my $cols_output = 0;
@@ -658,7 +764,12 @@ sub prepare_excel_output {
     $worksheet->write($partid_row,0,'Part ID',$format->{'bold'});
     $worksheet->write($respid_row,0,'Response ID',$format->{'bold'});
     # Student headers
-    my @StudentColumns = ('username','domain','id');
+    my @StudentColumns;
+    if ($show_named) {
+        @StudentColumns = qw(username domain id section);
+    } else {
+        @StudentColumns = qw(username);
+    }
     foreach (@StudentColumns) {
         $worksheet->write($header_row,$cols_output++,ucfirst($_),
                           $format->{'bold'});
@@ -705,9 +816,17 @@ sub prepare_excel_output {
         last if ($c->aborted());
         $cols_output = 0;
         my $student_row = $max_row;
+        my $anonid = &Crypt::PasswdMD5::unix_md5_crypt($student->{'username'},
+                                                       $salt);
+        $anonid = substr($anonid,length($salt)+1);
         foreach my $field (@StudentColumns) {
-            $worksheet->write($student_row,$cols_output++,
-                              $student->{$field});
+            if ($show_named) {
+                $worksheet->write($student_row,$cols_output++,
+                                  $student->{$field});
+            } else {
+                $worksheet->write($student_row,$cols_output++,
+                                      $anonid);
+            }
         }
         my $last_student_col = $cols_output-1;
         foreach my $prob (@$Problems) {
@@ -735,7 +854,7 @@ sub prepare_excel_output {
                     my $response_start_col = $start_col{$prob->symb}->{$partid}->{$respid};
                     for (my $j=scalar(@$results)-1;$j>=0;$j--) {
                         $cols_output = $response_start_col;
-                        if ($ENV{'form.all_sub'} ne 'true') {
+                        if ($env{'form.all_sub'} ne 'true') {
                             next if ($j ne scalar(@$results)-1);
                         }
                         my $response = &hashify_response($results->[$j],
@@ -762,8 +881,13 @@ sub prepare_excel_output {
         for (my $row = $student_row+1;$row<$max_row;$row++) {
             my $cols = 0;
             foreach my $field (@StudentColumns) {
-                $worksheet->write($row,$cols++,
-                                  $student->{$field});
+                if ($show_named) {
+                    $worksheet->write($row,$cols++,
+                                      $student->{$field});
+                } else {
+                    $worksheet->write($row,$cols++,
+                                      $anonid);
+                }
             }
         }
         &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
@@ -797,8 +921,10 @@ sub compile_response_data {
     #
     my $submission = 
         &HTML::Entities::decode
-        (&Apache::lonnet::unescape($response->{'Submission'}));
-    return () if (! defined($submission) || $submission eq '');
+        (&unescape($response->{'Submission'}));
+    if (!$prob->is_task()) {
+	return () if (! defined($submission) || $submission eq '');
+    }
     $submission =~ s/\\\"/\"/g;
     $submission =~ s/\\\'/\'/g;
     if ($resptype eq 'radiobutton') {
@@ -810,14 +936,14 @@ sub compile_response_data {
     if ($resptype =~ /^(option|match|rank)$/) {
         my %submission = 
             map { 
-                my ($foil,$value) = split('=',&Apache::lonnet::unescape($_));
+                my ($foil,$value) = split('=',&unescape($_));
                 ($foil,$value);
             } split('&',$response->{'Submission'});
         my %correct;
         if (exists($response->{'Correct'})) {
             %correct = 
                 map { 
-                    my ($foil,$value)=split('=',&Apache::lonnet::unescape($_));
+                    my ($foil,$value)=split('=',&unescape($_));
                     ($foil,$value);
                 } split('&',$response->{'Correct'});
         }
@@ -871,8 +997,9 @@ sub excel_format_item {
 #########################################################
 #########################################################
 sub prepare_csv_output {
-    my ($r,$problems,$students) = @_;
+    my ($r,$problems,$students,$show_named) = @_;
     my $c = $r->connection();
+    my $salt = '$1$'.$Apache::lonnet::perlvar{'AnonymousSalt'};
     #
     $r->print('<h2>'.
               &mt('Generating CSV report of student responses').'</h2>');
@@ -888,21 +1015,28 @@ sub prepare_csv_output {
     # Open a file
     my $outputfile;
     my $filename = '/prtspool/'.
-        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
+        $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
             time.'_'.rand(1000000000).'.csv';
     unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
         $r->log_error("Couldn't open $filename for output $!");
-        $r->print("Problems occured in writing the csv file.  ".
-                  "This error has been logged.  ".
-                  "Please alert your LON-CAPA administrator.");
+        $r->print('<div class="LC_error">'
+                 .&mt('Problems occurred in writing the CSV file. '
+                     .'This error has been logged. '
+                     .'Please alert your LON-CAPA administrator.')
+                 .'</div>');
         $outputfile = undef;
     }
     #
     # Compute the number of columns per response
-    my @extra_resp_headers = &get_extra_response_headers();
+    my @extra_resp_headers = &get_extra_response_headers($show_named);
     #
     # Create the table header
-    my @student_columns = ('username','domain','id');
+    my @student_columns;
+    if ($show_named) {
+        @student_columns = qw(username domain id section);
+    } else {
+        @student_columns = qw(username);
+    }
     #
     my %headers;
     push(@{$headers{'student'}},@student_columns);
@@ -951,6 +1085,9 @@ sub prepare_csv_output {
     # Main loop
     foreach my $student (@$students) {
         last if ($c->aborted());
+        my $anonid = &Crypt::PasswdMD5::unix_md5_crypt($student->{'username'},
+                                                       $salt);
+       $anonid = substr($anonid,length($salt)+1);
         my @rows;
         foreach my $prob (@$problems) {
             foreach my $partid (@{$prob->parts}) {
@@ -970,7 +1107,7 @@ sub prepare_csv_output {
                         $results = [];
                     }
                     for (my $j=0; $j<scalar(@$results);$j++) {
-                        if ($ENV{'form.all_sub'} ne 'true') {
+                        if ($env{'form.all_sub'} ne 'true') {
                             next if ($j != 0);
                         }
                         my $idx = scalar(@$results) - $j - 1;
@@ -991,9 +1128,15 @@ sub prepare_csv_output {
             }
         }
         foreach my $row (@rows) {
-            print $outputfile '"'.join('","',
-                                       map { $student->{$_}; }
-                                       @student_columns).'"';
+            my $student_row_data = '';
+            if ($show_named) {
+                $student_row_data = '"'.join('","',
+                                        map { $student->{$_}; }
+                                        @student_columns).'"';
+            } else {
+                $student_row_data = '"'.$anonid.'"';
+            }
+            print $outputfile $student_row_data;
             for (my $i=scalar(@student_columns);$i<$max_column;$i++) {
                 my $value = &Apache::loncommon::csv_translate($row->[$i]);
                 $value ||='';
@@ -1010,9 +1153,9 @@ sub prepare_csv_output {
     # Close the progress window
     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
     #
-    # Tell the user where to get their csv file
+    # Tell the user where to get their CSV file
     $r->print('<br />'.
-              '<a href="'.$filename.'">'.&mt('Your csv file.').'</a>'."\n");
+              '<a href="'.$filename.'">'.&mt('Your CSV file.').'</a>'."\n");
     $r->rflush();
     return;
 }
@@ -1039,8 +1182,8 @@ sub CreateInterface {
     my $output_selector = $/.'<select name="output">'.$/;
     foreach ('HTML','Excel','CSV') {
         $output_selector .= '    <option value="'.lc($_).'"';
-        if ($ENV{'form.output'} eq lc($_)) {
-            $output_selector .= ' selected ';
+        if ($env{'form.output'} eq lc($_)) {
+            $output_selector .= ' selected="selected" ';
         }
         $output_selector .='>'.&mt($_).'</option>'.$/;
     } 
@@ -1048,74 +1191,83 @@ sub CreateInterface {
     ##
     ## Environment variable initialization
     my $Str = '';
-    $Str .= &Apache::lonhtmlcommon::breadcrumbs
-        (undef,'Student Submission Reports');
-    $Str .= '<p>';
-    $Str .= '<table cellspacing="5">'."\n";
-    $Str .= '<tr>';
+    $Str .= &Apache::lonhtmlcommon::breadcrumbs('Student Submission Reports');
+    $Str .= '<br />';
+    $Str .= &Apache::loncommon::start_data_table();
+    $Str .= &Apache::loncommon::start_data_table_header_row();
     $Str .= '<th>'.&mt('Sections').'</th>';
-    $Str .= '<th>'.&mt('Enrollment Status').'</th>';
-    $Str .= '<th>'.&mt('Output as [_1]',$output_selector).'</th>';
-    $Str .= '</tr>'."\n";
+    $Str .= '<th>'.&mt('Groups').'</th>';
+    $Str .= '<th>'.&mt('Access Status').'</th>';
+    $Str .= '<th>'.&mt('Options').'</th>';
+    $Str .= '<th>'.&mt('Output Format').'</th>';
+    $Str .= &Apache::loncommon::end_data_table_header_row();
     #
-    $Str .= '<tr><td align="center">'."\n";
+    $Str .= &Apache::loncommon::start_data_table_row();
+    $Str .= '<td align="center">'."\n";
     $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
     $Str .= '</td>';
     #
+    $Str .= '<td align="center">'."\n";
+    $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
+    $Str .= '</td>';
+    #
     $Str .= '<td align="center">';
     $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
     $Str .= '</td>';
     #
     # Render problem checkbox
     my $prob_checkbox = '<input type="checkbox" name="renderprob" ';
-    if (exists($ENV{'form.renderprob'}) && $ENV{'form.renderprob'} eq 'true') {
-        $prob_checkbox .= 'checked ';
+    if (exists($env{'form.renderprob'}) && $env{'form.renderprob'} eq 'true') {
+        $prob_checkbox .= 'checked="checked" ';
     }
     $prob_checkbox .= 'value="true" />';
     #
     # Compute correct answers checkbox
     my $ans_checkbox = '<input type="checkbox" name="correctans" ';
-    if (exists($ENV{'form.correctans'}) && $ENV{'form.correctans'} eq 'true') {
-        $ans_checkbox .= 'checked ';
+    if (exists($env{'form.correctans'}) && $env{'form.correctans'} eq 'true') {
+        $ans_checkbox .= 'checked="checked" ';
     }
     $ans_checkbox .= 'value="true" />';
     #
     # Show all submissions checkbox
     my $all_sub_checkbox = '<input type="checkbox" name="all_sub" ';
-    if (exists($ENV{'form.all_sub'}) && 
-        $ENV{'form.all_sub'} eq 'true') {
-        $all_sub_checkbox .= 'checked ';
+    if (exists($env{'form.all_sub'}) && 
+        $env{'form.all_sub'} eq 'true') {
+        $all_sub_checkbox .= 'checked="checked" ';
     }
     $all_sub_checkbox.= 'value="true" />';
     #
     # problem status checkbox
     my $prob_status_checkbox = '<input type="checkbox" name="prob_status" ';
-    if (exists($ENV{'form.prob_status'}) && 
-        $ENV{'form.prob_status'} eq 'true') {
-        $prob_status_checkbox .= 'checked ';
+    if (exists($env{'form.prob_status'}) && 
+        $env{'form.prob_status'} eq 'true') {
+        $prob_status_checkbox .= 'checked="checked" ';
     }
     $prob_status_checkbox .= 'value="true" />';
     #
-    $Str .= '<td align="right" halign="top">'.
+    $Str .= '<td align="right" valign="top">'.
         '<label><b>'.
-        &mt('Show problem [_1]',$prob_checkbox).'</b></label><br />'.
+        &mt('Show problem').' '.$prob_checkbox.'</b></label><br />'.
         '<label><b>'.
-        &mt('Show correct answers [_1]',$ans_checkbox).'</b></label><br />'.
+        &mt('Show correct answers').' '.$ans_checkbox.'</b></label><br />'.
         '<label><b>'.
-        &mt('Show all submissions [_1]',$all_sub_checkbox).
+        &mt('Show all submissions').' '.$all_sub_checkbox.
         '</b></label><br />'.
         '<label><b>'.
-        &mt('Show problem grading [_1]',$prob_status_checkbox).
+        &mt('Show problem grading').' '.$prob_status_checkbox.
         '</b></label><br />'.
         '</td>';
     #
-    $Str .= '</tr>'."\n";
-    $Str .= '</table>'."\n";
+    $Str .= '<td align="center" valign="top">'.$output_selector.'</td>';
+    #
+    $Str .= &Apache::loncommon::end_data_table_row();
+    $Str .= &Apache::loncommon::end_data_table();
     #
-    $Str .= '<nobr>'.&mt('Status: [_1]',
-                         '<input type="text" '.
-                         'name="stats_status" size="60" value="" />').
-            '</nobr>'.'</p>';    
+    $Str .= '<p><span class="LC_nobreak">'
+           .&mt('Status: [_1]',
+                    '<input type="text" name="stats_status"'
+                   .' size="60" value="" readonly="readonly" />')
+           .'</span></p>';
     ##
     return $Str;
 }