Diff for /loncom/homework/grades.pm between versions 1.19 and 1.141

version 1.19, 2002/04/06 21:07:08 version 1.141, 2003/09/21 21:40:06
Line 29 Line 29
 # 6/8 Gerd Kortemeyer  # 6/8 Gerd Kortemeyer
 # 7/26 H.K. Ng  # 7/26 H.K. Ng
 # 8/20 Gerd Kortemeyer  # 8/20 Gerd Kortemeyer
   # Year 2002
   # June-August H.K. Ng
   # Year 2003
   # February, March H.K. Ng
   # July, H. K. Ng
   #
   
 package Apache::grades;  package Apache::grades;
 use strict;  use strict;
Line 36  use Apache::style; Line 42  use Apache::style;
 use Apache::lonxml;  use Apache::lonxml;
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::loncommon;  use Apache::loncommon;
   use Apache::lonhtmlcommon;
   use Apache::lonnavmaps;
 use Apache::lonhomework;  use Apache::lonhomework;
   use Apache::loncoursedata;
   use Apache::lonmsg qw(:user_normal_msg);
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   use String::Similarity;
   
 sub moreinfo {  my %oldessays=();
   my ($request,$reason) = @_;  my %perm=();
   $request->print("Unable to process request: $reason");  
   if ( $Apache::grades::viewgrades eq 'F' ) {  # ----- These first few routines are general use routines.----
     $request->print('<form action="/adm/grades" method="post">'."\n");  #
     if ($ENV{'form.url'}) {  # --- Retrieve the parts that matches stores_\d+ from the metadata file.---
       $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");  sub getpartlist {
     }      my ($url) = @_;
     if ($ENV{'form.symb'}) {      my @parts =();
       $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");      my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
     }      foreach my $key (@metakeys) {
     $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");   if ( $key =~ m/stores_(\w+)_.*/) {
     $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'" />'."<br />\n");      push(@parts,$key);
     $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'" />'."<br />\n");   }
     $request->print('<input type="submit" name="submit" value="ReSubmit" />'."<br />\n");      }
     $request->print('</form>');      return @parts;
   }  
   return '';  
 }  }
   
   # --- Get the symbolic name of a problem and the url
   sub get_symb_and_url {
       my ($request) = @_;
       (my $url=$ENV{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
       my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
       if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
       return ($symb,$url);
   }
   
 sub listStudents {  # --- Retrieve the fullname for a user. Return lastname, first middle ---
   my ($request) = shift;  # --- Generation is attached next to the lastname if it exists. ---
   my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});  sub get_fullname {
   my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};      my ($uname,$udom) = @_;
   $request->print ('<h1>Show Student Submissions on Assessment</h1>'.      my %name=&Apache::lonnet::get('environment', ['lastname','generation',
  '<table border="1"><tr><th>Username</th><th>Domain</th><th>Name</th><th>&nbsp;</th></tr>'    'firstname','middlename'],
  );                                    $udom,$uname);
   my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');      my $fullname;
   foreach my $student ( sort(@{ $classlist{'allids'} }) ) {      my ($tmp) = keys(%name);
       my ($sname,$sdom) = split(/:/,$student);      if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
           $fullname = &Apache::loncoursedata::ProcessFullName
       my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.              (@name{qw/lastname generation firstname middlename/});
      ':environment:lastname&generation&firstname&middlename',      } else {
       &Apache::lonnet::homeserver($sname,$sdom));          &Apache::lonnet::logthis('grades.pm: no name data for '.$uname.
       #print "reply=$reply<br>";                                   '@'.$udom.':'.$tmp);
       my (@nameparts) = split /&/,$reply;      }
 #      my $sfullname = $Apache::lonnet::unescape($nameparts[0]);      return $fullname;
   
       if ( $Apache::grades::viewgrades eq 'F' ) {  
   $request->print(  
  "\n".'<tr><form action="/adm/grades" method="post">'.  
  "<td>$sname</td><td>$sdom</td><td>@nameparts</td><td>");  
   if ($ENV{'form.url'}) {  
     $request->print(  
     '<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />');  
   }  
   if ($ENV{'form.symb'}) {  
     $request->print(  
     '<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />');  
   }  
   $request->print(  
     '<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />');  
   $request->print(  
              '<input type="hidden" name="student" value="'.$sname.'" />');  
   $request->print(  
              '<input type="hidden" name="domain" value="'.$sdom.'" />');  
   $request->print(  
                          '<input type="submit" name="submit" value="View" />');  
   $request->print('</td></form></tr>');  
       }  
   }  
   $request->print('</table>');  
 }  }
   
   #--- Format fullname, username:domain if different for display
   #--- Use anywhere where the student names are listed
   sub nameUserString {
       my ($type,$fullname,$uname,$udom) = @_;
       if ($type eq 'header') {
    return '<b>&nbsp;Fullname&nbsp;</b><font color="#999999">(Username)</font>&nbsp;';
       } else {
    return '&nbsp;'.$fullname.'<font color="#999999">&nbsp;('.$uname.
       ($ENV{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</font>';
       }
   }
   
 #FIXME - needs to handle multiple matches  #--- Get the partlist and the response type for a given problem. ---
 sub finduser {  #--- Indicate if a response type is coded handgraded or not. ---
   my ($name) = @_;  sub response_type {
   my $domain = '';      my ($url,$symb) = shift;
       $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url))) if ($symb eq '');
   if ( $Apache::grades::viewgrades eq 'F' ) {      my $allkeys = &Apache::lonnet::metadata($url,'keys');
     #get classlist      my %seen = ();
     my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});      my (@partlist,%handgrade);
     my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};      foreach (split(/,/,&Apache::lonnet::metadata($url,'packages'))) {
     #print "Found $cdom:$cnum:$chome<br />";   if (/^\w+response_\w+.*/) {
     my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');      my ($responsetype,$part) = split(/_/,$_,2);
     foreach my $student ( sort(@{ $classlist{'allids'} }) ) {      my ($partid,$respid) = split(/_/,$part);
       my ($posname,$posdomain) = split(/:/,$student);      $responsetype =~ s/response$//; # make it compatible w/ navmaps - should move to that!!
       if ($posname =~ $name) { $name=$posname; $domain=$posdomain; last; }      my ($value) = &Apache::lonnet::EXT('resource.'.$part.'.handgrade',$symb);
     }      $handgrade{$part} = $responsetype.':'.($value eq 'yes' ? 'yes' : 'no'); 
     return ($name,$domain);      next if ($seen{$partid} > 0);
   } else {      $seen{$partid}++;
     return ($ENV{'user.name'},$ENV{'user.domain'});      push @partlist,$partid;
   }   }
       }
       return \@partlist,\%handgrade;
   }
   
   #--- Show resource title
   #--- and parts and response type
   sub showResourceInfo {
       my ($url,$probTitle) = @_;
       my $result ='<table border="0">'.
    '<tr><td colspan=3><font size=+1><b>Current Resource: </b>'.$probTitle.'</font></td></tr>'."\n";
       my ($partlist,$handgrade) = &response_type($url);
       my %resptype = ();
       my $hdgrade='no';
       for (sort keys(%$handgrade)) {
    my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
    my $partID = (split(/_/))[0];
    $resptype{$partID} = $responsetype;
    $hdgrade = $handgrade if ($handgrade eq 'yes');
    $result.='<tr><td><b>Part </b>'.$partID.'</td>'.
       '<td><b>Type: </b>'.$responsetype.'</td></tr>';
   #    '<td><b>Handgrade: </b>'.$handgrade.'</td></tr>';
       }
       $result.='</table>'."\n";
       return $result,\%resptype,$hdgrade,$partlist,$handgrade;
   }
   
   #--- Clean response type for display
   #--- Currently filters option response type only.
   sub cleanRecord {
       my ($answer,$response,$symb) = @_;
       if ($response eq 'option') {
    my (@IDs,@ans);
    foreach (split(/\&/,&Apache::lonnet::unescape($answer))) {
       my ($optionID,$ans) = split(/=/);
       push @IDs,$optionID.'</font>';
       push @ans,$ans;
    }
    my $grayFont = '<font color="#999999">';
    return '<blockquote><table border="1">'.
       '<tr valign="top"><td>Answer</td><td>'.
       (join '</td><td>',@ans).'</td></tr>'.
       '<tr valign="top"><td>'.$grayFont.'Option ID</font></td><td>'.$grayFont.
       (join '</td><td>'.$grayFont,@IDs).'</font></td></tr>'.
       '</table></blockquote>';
       }
       if ($response eq 'essay') {
    if (! exists ($ENV{'form.'.$symb})) {
       my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
   
       my $loginuser = $ENV{'user.name'}.':'.$ENV{'user.domain'};
       $ENV{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
       $ENV{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
       $ENV{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
       $ENV{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
       $ENV{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
    }
    return '<br /><br /><blockquote>'.&keywords_highlight($answer).'</blockquote>';
       }
       return $answer;
   }
   
   #-- A couple of common js functions
   sub commonJSfunctions {
       my $request = shift;
       $request->print(<<COMMONJSFUNCTIONS);
   <script type="text/javascript" language="javascript">
       function radioSelection(radioButton) {
    var selection=null;
    if (radioButton.length > 1) {
       for (var i=0; i<radioButton.length; i++) {
    if (radioButton[i].checked) {
       return radioButton[i].value;
    }
       }
    } else {
       if (radioButton.checked) return radioButton.value;
    }
    return selection;
       }
   
       function pullDownSelection(selectOne) {
    var selection="";
    if (selectOne.length > 1) {
       for (var i=0; i<selectOne.length; i++) {
    if (selectOne[i].selected) {
       return selectOne[i].value;
    }
       }
    } else {
               // only one value it must be the selected one
       return selectOne.value;
    }
       }
   </script>
   COMMONJSFUNCTIONS
 }  }
   
   #--- Dumps the class list with usernames,list of sections,
   #--- section, ids and fullnames for each user.
 sub getclasslist {  sub getclasslist {
   my ($coursedomain,$coursenum,$coursehome,$hideexpired) = @_;      my ($getsec,$filterlist) = @_;
   my $classlist=&Apache::lonnet::reply("dump:$coursedomain:$coursenum:classlist",$coursehome);      $getsec = $getsec eq '' ? 'all' : $getsec;
   my %classlist=();      my $classlist=&Apache::loncoursedata::get_classlist();
   my $now = time;      # Bail out if we were unable to get the classlist
   foreach my $record (split /&/, $classlist) {      return if (! defined($classlist));
     my ($name,$value)=split(/=/,&Apache::lonnet::unescape($record));      #
     my ($end,$start)=split(/:/,$value);      my %sections;
     # still a student?      my %fullnames;
     if (($hideexpired) && ($end) && ($end < $now)) {      foreach (keys(%$classlist)) {
       #print "Skipping:$name:$end:$now<br />\n";          # the following undefs are for 'domain', and 'username' respectively.
       next;   my (undef,undef,$end,$start,$id,$section,$fullname,$status)=
               @{$classlist->{$_}};
    # filter students according to status selected
    if ($filterlist && $ENV{'form.Status'} ne 'Any') {
       if ($ENV{'form.Status'} ne $status) {
    delete ($classlist->{$_});
    next;
       }
    }
    $section = ($section ne '' ? $section : 'no');
    if (&canview($section)) {
       if ($getsec eq 'all' || $getsec eq $section) {
    $sections{$section}++;
    $fullnames{$_}=$fullname;
       } else {
    delete($classlist->{$_});
       }
    } else {
       delete($classlist->{$_});
    }
     }      }
     #print "record=$record<br>";      my %seen = ();
     push( @{ $classlist{'allids'} }, $name);       my @sections = sort(keys(%sections));
   }      return ($classlist,\@sections,\%fullnames);
   return (%classlist);  
 }  }
   
 sub getpartlist {  sub canmodify {
   my ($url) = @_;      my ($sec)=@_;
   my @parts =();      if ($perm{'mgr'}) {
   my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));   if (!defined($perm{'mgr_section'})) {
   foreach my $key (@metakeys) {      # can modify whole class
     if ( $key =~ m/stores_([0-9]+)_.*/ ) {      return 1;
       push(@parts,$key);   } else {
       if ($sec eq $perm{'mgr_section'}) {
    #can modify the requested section
    return 1;
       } else {
    # can't modify the request section
    return 0;
       }
    }
     }      }
   }      #can't modify
   return @parts;      return 0;
 }  }
   
 sub viewstudentgrade {  sub canview {
   my ($url,$symb,$courseid,$student,@parts) = @_;      my ($sec)=@_;
   my $result ='';      if ($perm{'vgr'}) {
   my $cellclr = '"#ffffdd"';   if (!defined($perm{'vgr_section'})) {
   my ($stuname,$domain) = split(/:/,$student);      # can modify whole class
       return 1;
   my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);   } else {
       if ($sec eq $perm{'vgr_section'}) {
   $result.="<tr><td bgcolor=$cellclr>$stuname</td><td bgcolor=$cellclr align=\"middle\">$domain</td>\n";   #can modify the requested section
   foreach my $part (@parts) {   return 1;
     my ($temp,$part,$type)=split(/_/,$part);      } else {
     #print "resource.$part.$type = ".$record{"resource.$part.$type"}." <br />\n";   # can't modify the request section
     if ($type eq 'awarded') {   return 0;
       my $score=$record{"resource.$part.$type"};      }
       $result.="<td bgcolor=$cellclr align=\"middle\"><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n";   }
     } elsif ($type eq 'tries') {  
       my $score=$record{"resource.$part.$type"};  
       $result.="<td bgcolor=$cellclr align=\"middle\"><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n"  
     } elsif ($type eq 'solved') {  
       my $score=$record{"resource.$part.$type"};  
       $result.="<td bgcolor=$cellclr align=\"middle\"><select name=\"GRADE.$student.$part.$type\">\n";  
       if ($score =~ /^correct/) {  
  $result.="<option selected=\"on\">correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";  
       } elsif ($score =~ /^incorrect/) {  
  $result.="<option>correct</option>\n<option selected=\"on\">incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";  
       } elsif ($score eq '') {  
  $result.="<option>correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option selected=\"on\">nothing</option>\n";  
       } elsif ($score =~ /^excused/) {  
  $result.="<option>correct</option>\n<option>incorrect</option>\n<option selected=\"on\">excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";  
       } elsif ($score =~ /^ungraded/) {  
  $result.="<option>correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option selected=\"on\">ungraded</option>\n<option>nothing</option>\n";  
       }  
       $result.="</select></td>\n";  
     }      }
   }      #can't modify
   $result.='</tr>';      return 0;
   return $result;  
 }  }
 #FIXME need to look at the meatdata <stores> spec on what type of data to accept and provide an  
 #interface based on that, also do that to above function.  #--- Retrieve the grade status of a student for all the parts
 sub setstudentgrade {  sub student_gradeStatus {
   my ($url,$symb,$courseid,$student,@parts) = @_;      my ($url,$symb,$udom,$uname,$partlist) = @_;
       my %record     = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
   my $result ='';      my %partstatus = ();
       foreach (@$partlist) {
   my ($stuname,$domain) = split(/:/,$student);   my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
    $status              = 'nothing' if ($status eq '');
   my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);   $partstatus{$_}      = $status;
    my $subkey           = "resource.$_.submitted_by";
   my %newrecord;   $partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
       }
   foreach my $part (@parts) {      return %partstatus;
     my ($temp,$part,$type)=split(/_/,$part);  }
     my $oldscore=$record{"resource.$part.$type"};  
     my $newscore=$ENV{"form.GRADE.$student.$part.$type"};  # hidden form and javascript that calls the form
     if ($type eq 'solved') {  # Use by verifyscript and viewgrades
       my $update=0;  # Shows a student's view of problem and submission
       if ($newscore eq 'nothing' ) {  sub jscriptNform {
  if ($oldscore ne '') {      my ($url,$symb) = @_;
   $update=1;      my $jscript='<script type="text/javascript" language="javascript">'."\n".
   $newscore = '';   '    function viewOneStudent(user,domain) {'."\n".
  }   ' document.onestudent.student.value = user;'."\n".
       } elsif ($oldscore !~ m/^$newscore/) {   ' document.onestudent.userdom.value = domain;'."\n".
  $update=1;   ' document.onestudent.submit();'."\n".
  $result.="Updating $stuname to $newscore<br />\n";   '    }'."\n".
  if ($newscore eq 'correct') { $newscore = 'correct_by_override'; }   '</script>'."\n";
  if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }      $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
  if ($newscore eq 'excused') { $newscore = 'excused'; }   '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
  if ($newscore eq 'ungraded') { $newscore = 'ungraded_attempted'; }   '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
       } else {   '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n".
  #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";   '<input type="hidden" name="probTitle" value="'.$ENV{'form.probTitle'}.'" />'."\n".
       }   '<input type="hidden" name="Status"  value="'.$ENV{'form.Status'}.'" />'."\n".
       if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }   '<input type="hidden" name="command" value="submission" />'."\n".
    '<input type="hidden" name="student" value="" />'."\n".
    '<input type="hidden" name="userdom" value="" />'."\n".
    '</form>'."\n";
       return $jscript;
   }
   
   #------------------ End of general use routines --------------------
   
   #
   # Find most similar essay
   #
   
   sub most_similar {
       my ($uname,$udom,$uessay)=@_;
   
   # ignore spaces and punctuation
   
       $uessay=~s/\W+/ /gs;
   
   # these will be returned. Do not care if not at least 50 percent similar
       my $limit=0.6;
       my $sname='';
       my $sdom='';
       my $scrsid='';
       my $sessay='';
   # go through all essays ...
       foreach my $tkey (keys %oldessays) {
    my ($tname,$tdom,$tcrsid)=split(/\./,$tkey);
   # ... except the same student
           if (($tname ne $uname) || ($tdom ne $udom)) {
       my $tessay=$oldessays{$tkey};
               $tessay=~s/\W+/ /gs;
   # String similarity gives up if not even limit
               my $tsimilar=&String::Similarity::similarity($uessay,$tessay,$limit);
   # Found one
               if ($tsimilar>$limit) {
    $limit=$tsimilar;
                   $sname=$tname;
                   $sdom=$tdom;
                   $scrsid=$tcrsid;
                   $sessay=$oldessays{$tkey};
               }
           } 
       }
       if ($limit>0.6) {
          return ($sname,$sdom,$scrsid,$sessay,$limit);
     } else {      } else {
       if ($oldscore ne $newscore) {         return ('','','','',0);
  $newrecord{"resource.$part.$type"}=$newscore;      }
  $result.="Updating $student"."'s status for $part.$type to $newscore<br />\n";  }
       } else {  
  #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";  #-------------------------------------------------------------------
       }  
   #------------------------------------ Receipt Verification Routines
   #
   #--- Check whether a receipt number is valid.---
   sub verifyreceipt {
       my $request  = shift;
   
       my $courseid = $ENV{'request.course.id'};
       my $receipt  = unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.
    $ENV{'form.receipt'};
       $receipt     =~ s/[^\-\d]//g;
       my $url      = $ENV{'form.url'};
       my $symb     = $ENV{'form.symb'};
       unless ($symb) {
    $symb    = &Apache::lonnet::symbread($url);
       }
   
       my $title.='<h3><font color="#339933">Verifying Submission Receipt '.
    $receipt.'</h3></font>'."\n".
    '<font size=+1><b>Resource: </b>'.$ENV{'form.probTitle'}.'</font><br><br>'."\n";
   
       my ($string,$contents,$matches) = ('','',0);
       my (undef,undef,$fullname) = &getclasslist('all','0');
   
       foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my ($uname,$udom)=split(/\:/);
    if ($receipt eq 
       &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb)) {
       $contents.='<tr bgcolor="#ffffe6"><td>&nbsp;'."\n".
    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
    '\')"; TARGET=_self>'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
    '<td>&nbsp;'.$uname.'&nbsp;</td>'.
    '<td>&nbsp;'.$udom.'&nbsp;</td></tr>'."\n";
       
       $matches++;
    }
       }
       if ($matches == 0) {
    $string = $title.'No match found for the above receipt.';
       } else {
    $string = &jscriptNform($url,$symb).$title.
       'The above receipt matches the following student'.
       ($matches <= 1 ? '.' : 's.')."\n".
       '<table border="0"><tr><td bgcolor="#777777">'."\n".
       '<table border="0"><tr bgcolor="#e6ffff">'."\n".
       '<td><b>&nbsp;Fullname&nbsp;</b></td>'."\n".
       '<td><b>&nbsp;Username&nbsp;</b></td>'."\n".
       '<td><b>&nbsp;Domain&nbsp;</b></td></tr>'."\n".
       $contents.
       '</table></td></tr></table>'."\n";
       }
       return $string.&show_grading_menu_form($symb,$url);
   }
   
   #--- This is called by a number of programs.
   #--- Called from the Grading Menu - View/Grade an individual student
   #--- Also called directly when one clicks on the subm button 
   #    on the problem page.
   sub listStudents {
       my ($request) = shift;
   
       my ($symb,$url) = &get_symb_and_url($request);
       my $cdom      = $ENV{"course.$ENV{'request.course.id'}.domain"};
       my $cnum      = $ENV{"course.$ENV{'request.course.id'}.num"};
       my $getsec    = $ENV{'form.section'} eq '' ? 'all' : $ENV{'form.section'};
       my $submitonly= $ENV{'form.submitonly'} eq '' ? 'all' : $ENV{'form.submitonly'};
   
       my $viewgrade = $ENV{'form.showgrading'} eq 'yes' ? 'View/Grade/Regrade' : 'View';
       $ENV{'form.probTitle'} = $ENV{'form.probTitle'} eq '' ? 
    &Apache::lonnet::gettitle($symb) : $ENV{'form.probTitle'};
   
       my $result='<h3><font color="#339933">&nbsp;'.$viewgrade.
    ' Submissions for a Student or a Group of Students</font></h3>';
   
       my ($table,undef,$hdgrade,$partlist,$handgrade) = &showResourceInfo($url,$ENV{'form.probTitle'});
       $result.=$table;
   
       $request->print(<<LISTJAVASCRIPT);
   <script type="text/javascript" language="javascript">
       function checkSelect(checkBox) {
    var ctr=0;
    var sense="";
    if (checkBox.length > 1) {
       for (var i=0; i<checkBox.length; i++) {
    if (checkBox[i].checked) {
       ctr++;
    }
       }
       sense = "a student or group of students";
    } else {
       if (checkBox.checked) {
    ctr = 1;
       }
       sense = "the student";
    }
    if (ctr == 0) {
       alert("Please select "+sense+" before clicking on the Next button.");
       return false;
    }
    document.gradesub.submit();
       }
   
       function reLoadList(formname) {
    if (formname.saveStatusOld.value == pullDownSelection(formname.Status)) {return;}
    formname.command.value = 'submission';
    formname.submit();
       }
   </script>
   LISTJAVASCRIPT
   
       &commonJSfunctions($request);
       $request->print($result);
   
       my $checkhdgrade = ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1 ) ? 'checked' : '';
       my $checklastsub = $checkhdgrade eq '' ? 'checked' : '';
       my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'."\n".
    '&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked /> no '."\n".
    '<input type="radio" name="vProb" value="yes" /> one student '."\n".
    '<input type="radio" name="vProb" value="all" /> all students <br />'."\n".
    '&nbsp;<b>Submissions: </b>'."\n";
       if ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1) {
    $gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> essay part only'."\n";
       }
   
       my $saveStatus = $ENV{'form.Status'} eq '' ? 'Active' : $ENV{'form.Status'};
       $ENV{'form.Status'} = $saveStatus;
   
       $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last submission only'."\n".
    '<input type="radio" name="lastSub" value="last" /> last submission & parts info'."\n".
    '<input type="radio" name="lastSub" value="datesub" /> by dates and submissions'."\n".
    '<input type="radio" name="lastSub" value="all" /> all details'."\n".
    '<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
    '<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
    '<input type="hidden" name="handgrade"   value="'.$ENV{'form.handgrade'}.'" /><br />'."\n".
    '<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" /><br />'."\n".
    '<input type="hidden" name="saveState"   value="'.$ENV{'form.saveState'}.'" />'."\n".
    '<input type="hidden" name="probTitle"   value="'.$ENV{'form.probTitle'}.'" />'."\n".
    '<input type="hidden" name="url"  value="'.$url.'" />'."\n".
    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
    '<input type="hidden" name="saveStatusOld" value="'.$saveStatus.'" />'."\n";
   
       if (exists($ENV{'form.gradingMenu'}) && exists($ENV{'form.Status'})) {
    $gradeTable.='<input type="hidden" name="Status"   value="'.$ENV{'form.Status'}.'" />'."\n";
       } else {
    $gradeTable.='<b>Student Status:</b> '.
       &Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,'javascript:reLoadList(this.form);').'<br />';
       }
   
       $gradeTable.='To '.lc($viewgrade).' a submission or a group of submissions, click on the check box(es) '.
    'next to the student\'s name(s). Then click on the Next button.<br />'."\n".
    '<input type="hidden" name="command" value="processGroup" />'."\n";
       $gradeTable.='<input type="button" '."\n".
    'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
    'value="Next->" />'."\n";
       $gradeTable.='<input type="checkbox" name="checkPlag" checked="on">Check For Plagiarism</input>';
       my (undef, undef, $fullname) = &getclasslist($getsec,'1');  
       $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">';
       my $loop = 0;
       while ($loop < 2) {
    $gradeTable.='<td><b>&nbsp;No.</b>&nbsp;</td><td><b>&nbsp;Select&nbsp;</b></td>'.
       '<td>'.&nameUserString('header').'</td>';
    if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
       foreach (sort(@$partlist)) {
    $gradeTable.='<td><b>&nbsp;Part '.(split(/_/))[0].' Status&nbsp;</b></td>';
       }
    }
    $loop++;
   # $gradeTable.='<td></td>' if ($loop%2 ==1);
       }
       $gradeTable.='</tr>'."\n";
   
       my $ctr = 0;
       foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my ($uname,$udom) = split(/:/,$student);
    my %status = ();
    if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
       (%status) =&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
       my $statusflg = '';
       foreach (keys(%status)) {
    $statusflg = 1 if ($status{$_} ne 'nothing');
    my ($foo,$partid,$foo1) = split(/\./,$_);
    if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
       $statusflg = '';
       $gradeTable.='<input type="hidden" name="'.
    $student.':submitted_by" value="'.
    $status{'resource.'.$partid.'.submitted_by'}.'" />';
    }
       }
       next if ($statusflg eq '' && $submitonly eq 'yes');
    }
   
    $ctr++;
    if ( $perm{'vgr'} eq 'F' ) {
       $gradeTable.='<tr bgcolor="#ffffe6">' if ($ctr%2 ==1);
       $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
    '<td align="center"><input type=checkbox name="stuinfo" value="'.
    $student.':'.$$fullname{$student}.'&nbsp;"></td>'."\n".
    '<td>'.&nameUserString(undef,$$fullname{$student},$uname,$udom).'</td>'."\n";
   
       if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
    foreach (sort keys(%status)) {
       next if (/^resource.*?submitted_by$/);
       $gradeTable.='<td align="middle">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
    }
       }
   #    $gradeTable.='<td></td>' if ($ctr%2 ==1);
       $gradeTable.='</tr>'."\n" if ($ctr%2 ==0);
    }
       }
       if ($ctr%2 ==1) {
    $gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
       if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
    foreach (@$partlist) {
       $gradeTable.='<td>&nbsp;</td>';
    }
       }
    $gradeTable.='</tr>';
       }
   
       $gradeTable.='</table></td></tr></table>'.
    '<input type="button" '.
    'onClick="javascript:checkSelect(this.form.stuinfo);" '.
    'value="Next->" /></form>'."\n";
       if ($ctr == 0) {
    my $num_students=(scalar(keys(%$fullname)));
    if ($num_students eq 0) {
       $gradeTable='<br />&nbsp;<font color="red">There are no students currently enrolled.</font>';
    } else {
       $gradeTable='<br />&nbsp;<font color="red">'.
    'No submissions found for this resource for any students. ('.$num_students.
    ' checked for submissions</font><br />';
    }
       } elsif ($ctr == 1) {
    $gradeTable =~ s/type=checkbox/type=checkbox checked/;
       }
       $gradeTable.=&show_grading_menu_form($symb,$url);
       $request->print($gradeTable);
       return '';
   }
   
   #---- Called from the listStudents routine
   #     Displays the submissions for one student or a group of students
   sub processGroup {
       my ($request)  = shift;
       my $ctr        = 0;
       my @stuchecked = (ref($ENV{'form.stuinfo'}) ? @{$ENV{'form.stuinfo'}}
         : ($ENV{'form.stuinfo'}));
       my $total      = scalar(@stuchecked)-1;
   
       foreach (@stuchecked) {
    my ($uname,$udom,$fullname) = split(/:/);
    $ENV{'form.student'}        = $uname;
    $ENV{'form.userdom'}        = $udom;
    $ENV{'form.fullname'}       = $fullname;
    &submission($request,$ctr,$total);
    $ctr++;
       }
       return '';
   }
   
   #------------------------------------------------------------------------------------
   #
   #-------------------------- Next few routines handles grading by student, essentially
   #                           handles essay response type problem/part
   #
   #--- Javascript to handle the submission page functionality ---
   sub sub_page_js {
       my $request = shift;
       $request->print(<<SUBJAVASCRIPT);
   <script type="text/javascript" language="javascript">
       function updateRadio(formname,id,weight) {
    var gradeBox = formname["GD_BOX"+id];
    var radioButton = formname["RADVAL"+id];
    var oldpts = formname["oldpts"+id].value;
    var pts = checkSolved(formname,id) == 'update' ? gradeBox.value : oldpts;
    gradeBox.value = pts;
    var resetbox = false;
    if (isNaN(pts) || pts < 0) {
       alert("A number equal or greater than 0 is expected. Entered value = "+pts);
       for (var i=0; i<radioButton.length; i++) {
    if (radioButton[i].checked) {
       gradeBox.value = i;
       resetbox = true;
    }
       }
       if (!resetbox) {
    formtextbox.value = "";
       }
       return;
    }
   
    if (pts > weight) {
       var resp = confirm("You entered a value ("+pts+
          ") greater than the weight for the part. Accept?");
       if (resp == false) {
    gradeBox.value = oldpts;
    return;
       }
    }
   
    for (var i=0; i<radioButton.length; i++) {
       radioButton[i].checked=false;
       if (pts == i && pts != "") {
    radioButton[i].checked=true;
       }
    }
    updateSelect(formname,id);
    formname["stores"+id].value = "0";
       }
   
       function writeBox(formname,id,pts) {
    var gradeBox = formname["GD_BOX"+id];
    if (checkSolved(formname,id) == 'update') {
       gradeBox.value = pts;
    } else {
       var oldpts = formname["oldpts"+id].value;
       gradeBox.value = oldpts;
       var radioButton = formname["RADVAL"+id];
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
    if (i == oldpts) {
       radioButton[i].checked=true;
    }
       }
    }
    formname["stores"+id].value = "0";
    updateSelect(formname,id);
    return;
       }
   
       function clearRadBox(formname,id) {
    if (checkSolved(formname,id) == 'noupdate') {
       updateSelect(formname,id);
       return;
    }
    gradeSelect = formname["GD_SEL"+id];
    for (var i=0; i<gradeSelect.length; i++) {
       if (gradeSelect[i].selected) {
    var selectx=i;
       }
    }
    var stores = formname["stores"+id];
    if (selectx == stores.value) { return };
    var gradeBox = formname["GD_BOX"+id];
    gradeBox.value = "";
    var radioButton = formname["RADVAL"+id];
    for (var i=0; i<radioButton.length; i++) {
       radioButton[i].checked=false;
    }
    stores.value = selectx;
       }
   
       function checkSolved(formname,id) {
    if (formname["solved"+id].value == "correct_by_student" && formname.overRideScore.value == 'no') {
       var reply = confirm("This problem has been graded correct by the computer. Do you want to change the score?");
       if (!reply) {return "noupdate";}
       formname.overRideScore.value = 'yes';
    }
    return "update";
       }
   
       function updateSelect(formname,id) {
    formname["GD_SEL"+id][0].selected = true;
    return;
     }      }
   
   //=========== Check that a point is assigned for all the parts  ============
       function checksubmit(formname,val,total,parttot) {
    formname.gradeOpt.value = val;
    if (val == "Save & Next") {
       for (i=0;i<=total;i++) {
    for (j=0;j<parttot;j++) {
       var partid = formname["partid"+i+"_"+j].value;
       if (formname["GD_SEL"+i+"_"+partid][0].selected) {
    var points = formname["GD_BOX"+i+"_"+partid].value;
    if (points == "") {
       var name = formname["name"+i].value;
       var studentID = (name != '' ? name : formname["unamedom"+i].value);
       var resp = confirm("You did not assign a score for "+studentID+
          ", part "+partid+". Continue?");
       if (resp == false) {
    formname["GD_BOX"+i+"_"+partid].focus();
    return false;
       }
    }
       }
       
    }
       }
       
    }
    if (val == "Grade Student") {
       formname.showgrading.value = "yes";
       if (formname.Status.value == "") {
    formname.Status.value = "Active";
       }
       formname.studentNo.value = total;
    }
    formname.submit();
       }
   
   //======= Check that a score is assigned for all the problems (page/sequence grading only) =========
       function checkSubmitPage(formname,total) {
    noscore = new Array(100);
    var ptr = 0;
    for (i=1;i<total;i++) {
       var partid = formname["q_"+i].value;
       if (formname["GD_SEL"+i+"_"+partid][0].selected) {
    var points = formname["GD_BOX"+i+"_"+partid].value;
    var status = formname["solved"+i+"_"+partid].value;
    if (points == "" && status != "correct_by_student") {
       noscore[ptr] = i;
       ptr++;
    }
       }
    }
    if (ptr != 0) {
       var sense = ptr == 1 ? ": " : "s: ";
       var prolist = "";
       if (ptr == 1) {
    prolist = noscore[0];
       } else {
    var i = 0;
    while (i < ptr-1) {
       prolist += noscore[i]+", ";
       i++;
    }
    prolist += "and "+noscore[i];
       }
       var resp = confirm("You did not assign any score for the following problem"+sense+prolist+". Continue?");
       if (resp == false) {
    return false;
       }
    }
   
    formname.submit();
       }
   </script>
   SUBJAVASCRIPT
   }
   
   #--- javascript for essay type problem --
   sub sub_page_kw_js {
       my $request = shift;
       my $iconpath = $request->dir_config('lonIconsURL');
       &commonJSfunctions($request);
       $request->print(<<SUBJAVASCRIPT);
   <script type="text/javascript" language="javascript">
   
   //===================== Show list of keywords ====================
     function keywords(formname) {
       var nret = prompt("Keywords list, separated by a space. Add/delete to list if desired.",formname.keywords.value);
       if (nret==null) return;
       formname.keywords.value = nret;
   
       if (formname.keywords.value != "") {
    formname.refresh.value = "on";
    formname.submit();
       }
       return;
     }
   
   //===================== Script to view submitted by ==================
     function viewSubmitter(submitter) {
       document.SCORE.refresh.value = "on";
       document.SCORE.NCT.value = "1";
       document.SCORE.unamedom0.value = submitter;
       document.SCORE.submit();
       return;
   }    }
   if ( scalar(keys(%newrecord)) > 0 ) {  
     $newrecord{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";  
     &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);  
   
     $result.="Stored away ".scalar(keys(%newrecord))." elements.<br />\n";  //===================== Script to add keyword(s) ==================
     function getSel() {
       if (document.getSelection) txt = document.getSelection();
       else if (document.selection) txt = document.selection.createRange().text;
       else return;
       var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");
       if (cleantxt=="") {
    alert("Please select a word or group of words from document and then click this link.");
    return;
       }
       var nret = prompt("Add selection to keyword list? Edit if desired.",cleantxt);
       if (nret==null) return;
       document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
       if (document.SCORE.keywords.value != "") {
    document.SCORE.refresh.value = "on";
    document.SCORE.submit();
       }
       return;
     }
   
   //====================== Script for composing message ==============
      // preload images
      img1 = new Image();
      img1.src = "$iconpath/mailbkgrd.gif";
      img2 = new Image();
      img2.src = "$iconpath/mailto.gif";
   
     function msgCenter(msgform,usrctr,fullname) {
       var Nmsg  = msgform.savemsgN.value;
       savedMsgHeader(Nmsg,usrctr,fullname);
       var subject = msgform.msgsub.value;
       var msgchk = document.SCORE["includemsg"+usrctr].value;
       re = /msgsub/;
       var shwsel = "";
       if (re.test(msgchk)) { shwsel = "checked" }
       subject = (document.SCORE.shownSub.value == 0 ? checkEntities(subject) : subject);
       displaySubject(checkEntities(subject),shwsel);
       for (var i=1; i<=Nmsg; i++) {
    var testmsg = "savemsg"+i+",";
    re = new RegExp(testmsg,"g");
    shwsel = "";
    if (re.test(msgchk)) { shwsel = "checked" }
    var message = document.SCORE["savemsg"+i].value;
    message = (document.SCORE["shownOnce"+i].value == 0 ? checkEntities(message) : message);
    displaySavedMsg(i,message,shwsel); //I do not get it. w/o checkEntities on saved messages,
                                      //any &lt; is already converted to <, etc. However, only once!!
       }
       newmsg = document.SCORE["newmsg"+usrctr].value;
       shwsel = "";
       re = /newmsg/;
       if (re.test(msgchk)) { shwsel = "checked" }
       newMsg(newmsg,shwsel);
       msgTail(); 
       return;
     }
   
     function checkEntities(strx) {
       if (strx.length == 0) return strx;
       var orgStr = ["&", "<", ">", '"']; 
       var newStr = ["&amp;", "&lt;", "&gt;", "&quot;"];
       var counter = 0;
       while (counter < 4) {
    strx = strReplace(strx,orgStr[counter],newStr[counter]);
    counter++;
       }
       return strx;
   }    }
   return $result;  
     function strReplace(strx, orgStr, newStr) {
       return strx.split(orgStr).join(newStr);
     }
   
     function savedMsgHeader(Nmsg,usrctr,fullname) {
       var height = 70*Nmsg+250;
       var scrollbar = "no";
       if (height > 600) {
    height = 600;
    scrollbar = "yes";
       }
       var xpos = (screen.width-600)/2;
       xpos = (xpos < 0) ? '0' : xpos;
       var ypos = (screen.height-height)/2-30;
       ypos = (ypos < 0) ? '0' : ypos;
   
       pWin = window.open('', 'MessageCenter', 'toolbar=no,location=no,scrollbars='+scrollbar+',screenx='+xpos+',screeny='+ypos+',width=600,height='+height);
       pWin.focus();
       pDoc = pWin.document;
       pDoc.open('text/html','replace');
       pDoc.write("<html><head>");
       pDoc.write("<title>Message Central</title>");
   
       pDoc.write("<script language=javascript>");
       pDoc.write("function checkInput() {");
       pDoc.write("  opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);");
       pDoc.write("  var nmsg   = opener.document.SCORE.savemsgN.value;");
       pDoc.write("  var usrctr = document.msgcenter.usrctr.value;");
       pDoc.write("  var newval = opener.document.SCORE[\\"newmsg\\"+usrctr];");
       pDoc.write("  newval.value = opener.checkEntities(document.msgcenter.newmsg.value);");
   
       pDoc.write("  var msgchk = \\"\\";");
       pDoc.write("  if (document.msgcenter.subchk.checked) {");
       pDoc.write("     msgchk = \\"msgsub,\\";");
       pDoc.write("  }");
       pDoc.write("  var includemsg = 0;");
       pDoc.write("  for (var i=1; i<=nmsg; i++) {");
       pDoc.write("      var opnmsg = opener.document.SCORE[\\"savemsg\\"+i];");
       pDoc.write("      var frmmsg = document.msgcenter[\\"msg\\"+i];");
       pDoc.write("      opnmsg.value = opener.checkEntities(frmmsg.value);");
       pDoc.write("      var showflg = opener.document.SCORE[\\"shownOnce\\"+i];");
       pDoc.write("      showflg.value = \\"1\\";");
       pDoc.write("      var chkbox = document.msgcenter[\\"msgn\\"+i];");
       pDoc.write("      if (chkbox.checked) {");
       pDoc.write("         msgchk += \\"savemsg\\"+i+\\",\\";");
       pDoc.write("         includemsg = 1;");
       pDoc.write("      }");
       pDoc.write("  }");
       pDoc.write("  if (document.msgcenter.newmsgchk.checked) {");
       pDoc.write("     msgchk += \\"newmsg\\"+usrctr;");
       pDoc.write("     includemsg = 1;");
       pDoc.write("  }");
       pDoc.write("  imgformname = opener.document.SCORE[\\"mailicon\\"+usrctr];");
       pDoc.write("  imgformname.src = \\"$iconpath/\\"+((includemsg) ? \\"mailto.gif\\" : \\"mailbkgrd.gif\\");");
       pDoc.write("  var includemsg = opener.document.SCORE[\\"includemsg\\"+usrctr];");
       pDoc.write("  includemsg.value = msgchk;");
   
       pDoc.write("  self.close()");
   
       pDoc.write("}");
   
       pDoc.write("<");
       pDoc.write("/script>");
   
       pDoc.write("</head><body bgcolor=white>");
   
       pDoc.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
       pDoc.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
       pDoc.write("<font color=\\"green\\" size=+1>&nbsp;Compose Message for \"+fullname+\"</font><br><br>");
   
       pDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
       pDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
       pDoc.write("<td><b>Type</b></td><td><b>Include</b></td><td><b>Message</td></tr>");
   }
       function displaySubject(msg,shwsel) {
       pDoc = pWin.document;
       pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
       pDoc.write("<td>Subject</td>");
       pDoc.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pDoc.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"60\\" maxlength=\\"80\\"></td></tr>");
 }  }
   
 sub submission {    function displaySavedMsg(ctr,msg,shwsel) {
   my ($request) = @_;      pDoc = pWin.document;
   my $url=$ENV{'form.url'};      pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
   $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;      pDoc.write("<td align=\\"center\\">"+ctr+"</td>");
   if ($ENV{'form.student'} eq '') { &moreinfo($request,"Need student login id"); return ''; }      pDoc.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"></td>");
 #  if ($ENV{'form.student'} eq '') { &listStudents($request); return ''; }      pDoc.write("<td><textarea name=\\"msg"+ctr+"\\" cols=\\"60\\" rows=\\"3\\">"+msg+"</textarea></td></tr>");
   my ($uname,$udom) = &finduser($ENV{'form.student'});  }
   if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }  
   my $symb;    function newMsg(newmsg,shwsel) {
   if ($ENV{'form.symb'}) {      pDoc = pWin.document;
     $symb=$ENV{'form.symb'};      pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
   } else {      pDoc.write("<td align=\\"center\\">New</td>");
     $symb=&Apache::lonnet::symbread($url);      pDoc.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pDoc.write("<td><textarea name=\\"newmsg\\" cols=\\"60\\" rows=\\"3\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" >"+newmsg+"</textarea></td></tr>");
   }
   
     function msgTail() {
       pDoc = pWin.document;
       pDoc.write("</table>");
       pDoc.write("</td></tr></table>&nbsp;");
       pDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
       pDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
       pDoc.write("</form>");
       pDoc.write("</body></html>");
       pDoc.close();
   }
   
   //====================== Script for keyword highlight options ==============
     function kwhighlight() {
       var kwclr    = document.SCORE.kwclr.value;
       var kwsize   = document.SCORE.kwsize.value;
       var kwstyle  = document.SCORE.kwstyle.value;
       var redsel = "";
       var grnsel = "";
       var blusel = "";
       if (kwclr=="red")   {var redsel="checked"};
       if (kwclr=="green") {var grnsel="checked"};
       if (kwclr=="blue")  {var blusel="checked"};
       var sznsel = "";
       var sz1sel = "";
       var sz2sel = "";
       if (kwsize=="0")  {var sznsel="checked"};
       if (kwsize=="+1") {var sz1sel="checked"};
       if (kwsize=="+2") {var sz2sel="checked"};
       var synsel = "";
       var syisel = "";
       var sybsel = "";
       if (kwstyle=="")    {var synsel="checked"};
       if (kwstyle=="<i>") {var syisel="checked"};
       if (kwstyle=="<b>") {var sybsel="checked"};
       highlightCentral();
       highlightbody('red','red',redsel,'0','normal',sznsel,'','normal',synsel);
       highlightbody('green','green',grnsel,'+1','+1',sz1sel,'<i>','italic',syisel);
       highlightbody('blue','blue',blusel,'+2','+2',sz2sel,'<b>','bold',sybsel);
       highlightend();
       return;
     }
   
     function highlightCentral() {
   //    if (window.hwdWin) window.hwdWin.close();
       var xpos = (screen.width-400)/2;
       xpos = (xpos < 0) ? '0' : xpos;
       var ypos = (screen.height-330)/2-30;
       ypos = (ypos < 0) ? '0' : ypos;
   
       hwdWin = window.open('', 'KeywordHighlightCentral', 'toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
       hwdWin.focus();
       var hDoc = hwdWin.document;
       hDoc.open('text/html','replace');
       hDoc.write("<html><head>");
       hDoc.write("<title>Highlight Central</title>");
   
       hDoc.write("<script language=javascript>");
       hDoc.write("function updateChoice(flag) {");
       hDoc.write("  opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);");
       hDoc.write("  opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);");
       hDoc.write("  opener.document.SCORE.kwstyle.value = opener.radioSelection(document.hlCenter.kwdstyle);");
       hDoc.write("  opener.document.SCORE.refresh.value = \\"on\\";");
       hDoc.write("  if (opener.document.SCORE.keywords.value!=\\"\\"){");
       hDoc.write("     opener.document.SCORE.submit();");
       hDoc.write("  }");
       hDoc.write("  self.close()");
       hDoc.write("}");
   
       hDoc.write("<");
       hDoc.write("/script>");
   
       hDoc.write("</head><body bgcolor=white>");
   
       hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
       hDoc.write("<font color=\\"green\\" size=+1>&nbsp;Keyword Highlight Options</font><br><br>");
   
       hDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
       hDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
       hDoc.write("<td><b>Text Color</b></td><td><b>Font Size</b></td><td><b>Font Style</td></tr>");
   }    }
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }  
   my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,    function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) { 
       var hDoc = hwdWin.document;
       hDoc.write("<tr bgcolor=\\"#ffffdd\\">");
       hDoc.write("<td align=\\"left\\">");
       hDoc.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+">&nbsp;"+clrtxt+"</td>");
       hDoc.write("<td align=\\"left\\">");
       hDoc.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+">&nbsp;"+sztxt+"</td>");
       hDoc.write("<td align=\\"left\\">");
       hDoc.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+">&nbsp;"+sytxt+"</td>");
       hDoc.write("</tr>");
     }
   
     function highlightend() { 
       var hDoc = hwdWin.document;
       hDoc.write("</table>");
       hDoc.write("</td></tr></table>&nbsp;");
       hDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(1)\\">&nbsp;&nbsp;");
       hDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
       hDoc.write("</form>");
       hDoc.write("</body></html>");
       hDoc.close();
     }
   
   </script>
   SUBJAVASCRIPT
   }
   
   #--- displays the grading box, used in essay type problem and grading by page/sequence
   sub gradeBox {
       my ($request,$symb,$uname,$udom,$counter,$partid,$record) = @_;
   
       my $checkIcon = '<img src="'.$request->dir_config('lonIconsURL').
    '/check.gif" height="16" border="0" />';
   
       my $wgt    = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb,$udom,$uname);
       my $wgtmsg = ($wgt > 0 ? '(problem weight)' : 
     '<font color="red">problem weight assigned by computer</font>');
       $wgt       = ($wgt > 0 ? $wgt : '1');
       my $score  = ($$record{'resource.'.$partid.'.awarded'} eq '' ?
     '' : $$record{'resource.'.$partid.'.awarded'}*$wgt);
       my $result='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
   
       $result.='<table border="0"><tr><td>'.
    '<b>Part </b>'.$partid.' <b>Points: </b></td><td>'."\n";
   
       my $ctr = 0;
       $result.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
       while ($ctr<=$wgt) {
    $result.= '<td><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
       'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
       $ctr.')" value="'.$ctr.'" '.
       ($score eq $ctr ? 'checked':'').' /> '.$ctr."</td>\n";
    $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
    $ctr++;
       }
       $result.='</tr></table>';
   
       $result.='</td><td>&nbsp;<b>or</b>&nbsp;</td>'."\n";
       $result.='<td><input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
    ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
    'onChange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
    $wgt.')" /></td>'."\n";
       $result.='<td>/'.$wgt.' '.$wgtmsg.
    ($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
    ' </td><td>'."\n";
   
       $result.='<select name="GD_SEL'.$counter.'_'.$partid.'" '.
    'onChange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
       if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
    $result.='<option> </option>'.
       '<option selected="on">excused</option>';
       } else {
    $result.='<option selected="on"> </option>'.
       '<option>excused</option>';
       }
       $result.='<option>reset status</option></select>'."\n";
       $result.="&nbsp&nbsp\n";
       $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
    '<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
    '<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
    $$record{'resource.'.$partid.'.solved'}.'" />'."\n";
       $result.='</td></tr></table>'."\n";
       return $result;
   }
   
   sub show_problem {
       my ($request,$symb,$uname,$udom,$removeform,$viewon) = @_;
       my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
       $ENV{'request.course.id'});        $ENV{'request.course.id'});
   my $result="<h2> Submission Record </h2>  $uname:$udom for $url <br />".$answer;      if ($removeform) {
   my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,   $rendered=~s|<form(.*?)>||g;
    $ENV{'request.course.id'});   $rendered=~s|</form>||g;
   $result.="Student's view of the problem:<br /> $rendered <br /> Correct answer:";   $rendered=~s|name="submit"|name="would_have_been_submit"|g;
       }
   my $answer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,      my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
   $ENV{'request.course.id'});     $ENV{'request.course.id'});
   $result.=$answer;      if ($removeform) {
   return $result;   $companswer=~s|<form(.*?)>||g;
    $companswer=~s|</form>||g;
    $rendered=~s|name="submit"|name="would_have_been_submit"|g;
       }
       my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
       $result.='<table border="0" width="100%">';
       $result.='<tr><td bgcolor="#e6ffff"><b> View of the problem - '.$ENV{'form.fullname'}.
    '</b></td></tr>' if ($viewon);
       $result.='<tr><td bgcolor="#ffffff">'.$rendered.'<br />';
       $result.='<b>Correct answer:</b><br />'.$companswer;
       $result.='</td></tr></table>';
       $result.='</td></tr></table><br />';
       return $result;
   }
   
   # --------------------------- show submissions of a student, option to grade 
   sub submission {
       my ($request,$counter,$total) = @_;
   
       (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
       my ($uname,$udom)     = ($ENV{'form.student'},$ENV{'form.userdom'});
       $udom = ($udom eq '' ? $ENV{'user.domain'} : $udom); #has form.userdom changed for a student?
       my $usec = &Apache::lonnet::getsection($udom,$uname,$ENV{'request.course.id'});
       $ENV{'form.fullname'} = &get_fullname ($uname,$udom) if $ENV{'form.fullname'} eq '';
   
       my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
       if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
   
       if (!&canview($usec)) {
    $request->print('<font color="red">Unable to view requested student.('.
    $uname.$udom.$usec.$ENV{'request.course.id'}.')</font>');
    $request->print(&show_grading_menu_form($symb,$url));
    return;
       }
   
       $ENV{'form.lastSub'} = ($ENV{'form.lastSub'} eq '' ? 'datesub' : $ENV{'form.lastSub'});
       my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
       my $checkIcon = '<img src="'.$request->dir_config('lonIconsURL').
    '/check.gif" height="16" border="0" />';
   
       # header info
       if ($counter == 0) {
    &sub_page_js($request);
    &sub_page_kw_js($request) if ($ENV{'form.handgrade'} eq 'yes');
    $ENV{'form.probTitle'} = $ENV{'form.probTitle'} eq '' ? 
       &Apache::lonnet::gettitle($symb) : $ENV{'form.probTitle'};
   
    $request->print('<h3>&nbsp;<font color="#339933">Submission Record</font></h3>'."\n".
    '<font size=+1>&nbsp;<b>Resource: </b>'.$ENV{'form.probTitle'}.'</font>'."\n");
   
    if ($ENV{'form.handgrade'} eq 'no') {
       my $checkMark='<br /><br />&nbsp;<b>Note:</b> Part(s) graded correct by the computer is marked with a '.
    $checkIcon.' symbol.'."\n";
       $request->print($checkMark);
    }
   
    # option to display problem, only once else it cause problems 
           # with the form later since the problem has a form.
    if ($ENV{'form.vProb'} eq 'yes' or !$ENV{'form.vProb'}) {
       $request->print(&show_problem($request,$symb,$uname,$udom,0,1));
    }
   
    # kwclr is the only variable that is guaranteed to be non blank 
           # if this subroutine has been called once.
    my %keyhash = ();
    if ($ENV{'form.kwclr'} eq '' && $ENV{'form.handgrade'} eq 'yes') {
       %keyhash = &Apache::lonnet::dump('nohist_handgrade',
        $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
        $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
   
       my $loginuser = $ENV{'user.name'}.':'.$ENV{'user.domain'};
       $ENV{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
       $ENV{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
       $ENV{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
       $ENV{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
       $ENV{'form.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ? 
    $keyhash{$symb.'_subject'} : $ENV{'form.probTitle'};
       $ENV{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
    }
    my $overRideScore = $ENV{'form.overRideScore'} eq '' ? 'no' : $ENV{'form.overRideScore'};
   
    $request->print('<form action="/adm/grades" method="post" name="SCORE">'."\n".
    '<input type="hidden" name="command"    value="handgrade" />'."\n".
    '<input type="hidden" name="saveState"  value="'.$ENV{'form.saveState'}.'" />'."\n".
    '<input type="hidden" name="Status"     value="'.$ENV{'form.Status'}.'" />'."\n".
    '<input type="hidden" name="overRideScore" value="'.$overRideScore.'" />'."\n".
    '<input type="hidden" name="probTitle"  value="'.$ENV{'form.probTitle'}.'" />'."\n".
    '<input type="hidden" name="refresh"    value="off" />'."\n".
    '<input type="hidden" name="studentNo"  value="" />'."\n".
    '<input type="hidden" name="gradeOpt"   value="" />'."\n".
    '<input type="hidden" name="symb"       value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url"        value="'.$url.'" />'."\n".
    '<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" />'."\n".
    '<input type="hidden" name="vProb"      value="'.$ENV{'form.vProb'}.'" />'."\n".
    '<input type="hidden" name="lastSub"    value="'.$ENV{'form.lastSub'}.'" />'."\n".
    '<input type="hidden" name="section"    value="'.$ENV{'form.section'}.'">'."\n".
    '<input type="hidden" name="submitonly" value="'.$ENV{'form.submitonly'}.'">'."\n".
    '<input type="hidden" name="handgrade"  value="'.$ENV{'form.handgrade'}.'">'."\n".
    '<input type="hidden" name="NCT"'.
    ' value="'.($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : $total+1).'" />'."\n");
    if ($ENV{'form.handgrade'} eq 'yes') {
       $request->print('<input type="hidden" name="keywords" value="'.$ENV{'form.keywords'}.'" />'."\n".
       '<input type="hidden" name="kwclr"    value="'.$ENV{'form.kwclr'}.'" />'."\n".
       '<input type="hidden" name="kwsize"   value="'.$ENV{'form.kwsize'}.'" />'."\n".
       '<input type="hidden" name="kwstyle"  value="'.$ENV{'form.kwstyle'}.'" />'."\n".
       '<input type="hidden" name="msgsub"   value="'.$ENV{'form.msgsub'}.'" />'."\n".
       '<input type="hidden" name="shownSub" value="0" />'."\n".
       '<input type="hidden" name="savemsgN" value="'.$ENV{'form.savemsgN'}.'" />'."\n");
    }
   
    my ($cts,$prnmsg) = (1,'');
    while ($cts <= $ENV{'form.savemsgN'}) {
       $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
    (!exists($keyhash{$symb.'_savemsg'.$cts}) ? 
    &Apache::lonfeedback::clear_out_html($ENV{'form.savemsg'.$cts}) :
    &Apache::lonfeedback::clear_out_html($keyhash{$symb.'_savemsg'.$cts})).
    '" />'."\n".
    '<input type="hidden" name="shownOnce'.$cts.'" value="0" />'."\n";
       $cts++;
    }
    $request->print($prnmsg);
   
    if ($ENV{'form.handgrade'} eq 'yes' && $ENV{'form.showgrading'} eq 'yes') {
   #
   # Print out the keyword options line
   #
       $request->print(<<KEYWORDS);
   &nbsp;<b>Keyword Options:</b>&nbsp;
   <a href="javascript:keywords(document.SCORE)"; TARGET=_self>List</a>&nbsp; &nbsp;
   <a href="#" onMouseDown="javascript:getSel(); return false"
    CLASS="page">Paste Selection to List</a>&nbsp; &nbsp;
   <a href="javascript:kwhighlight()"; TARGET=_self>Highlight Attribute</a><br /><br />
   KEYWORDS
   #
   # Load the other essays for similarity check
   #
               my $essayurl=&Apache::lonnet::declutter($url);
       my ($adom,$aname,$apath)=($essayurl=~/^(\w+)\/(\w+)\/(.*)$/);
       $apath=&Apache::lonnet::escape($apath);
       $apath=~s/\W/\_/gs;
       %oldessays=&Apache::lonnet::dump('nohist_essay_'.$apath,$adom,$aname);
           }
       }
   
       if ($ENV{'form.vProb'} eq 'all') {
    $request->print('<br /><br /><br />') if ($counter > 0);
    $request->print(&show_problem($request,$symb,$uname,$udom,1,1));
       }
       my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
   
       my ($partlist,$handgrade) = &response_type($url,$symb);
   
       # Display student info
       $request->print(($counter == 0 ? '' : '<br />'));
       my $result='<table border="0" width=100%><tr><td bgcolor="#777777">'."\n".
    '<table border="0" width=100%><tr bgcolor="#edffff"><td>'."\n";
   
       $result.='<b>Fullname: </b>'.&nameUserString(undef,$ENV{'form.fullname'},$uname,$udom).'<br />'."\n";
       $result.='<input type="hidden" name="name'.$counter.
    '" value="'.$ENV{'form.fullname'}.'" />'."\n";
   
       # If any part of the problem is an essay-response (handgraded), then check for collaborators
       my @col_fullnames;
       my ($classlist,$fullname);
       if ($ENV{'form.handgrade'} eq 'yes') {
    ($classlist,undef,$fullname) = &getclasslist('all','0');
    for (keys (%$handgrade)) {
       my $ncol = &Apache::lonnet::EXT('resource.'.$_.
       '.maxcollaborators',
                                               $symb,$udom,$uname);
       next if ($ncol <= 0);
               s/\_/\./g;
               next if ($record{'resource.'.$_.'.collaborators'} eq '');
               my @goodcollaborators = ();
               my @badcollaborators  = ();
       foreach (split(/,?\s+/,$record{'resource.'.$_.'.collaborators'})) { 
    $_ =~ s/[\$\^\(\)]//g;
    next if ($_ eq '');
    my ($co_name,$co_dom) = split /\@|:/,$_;
    $co_dom = $udom if (! defined($co_dom) || $co_dom =~ /^domain$/i);
    next if ($co_name eq $uname && $co_dom eq $udom);
    # Doing this grep allows 'fuzzy' specification
    my @Matches = grep /^$co_name:$co_dom$/i,keys %$classlist;
    if (! scalar(@Matches)) {
       push @badcollaborators,$_;
    } else {
       push @goodcollaborators, @Matches;
    }
       }
               if (scalar(@goodcollaborators) != 0) {
                   $result.='<b>Collaborators: </b>';
                   foreach (@goodcollaborators) {
       my ($lastname,$givenn) = split(/,/,$$fullname{$_});
       push @col_fullnames, $givenn.' '.$lastname;
       $result.=$$fullname{$_}.'&nbsp; &nbsp; &nbsp;';
    }
                   $result.='<br />'."\n";
    $result.='<input type="hidden" name="collaborator'.$counter.
       '" value="'.(join ':',@goodcollaborators).'" />'."\n";
       }
       if (scalar(@badcollaborators) > 0) {
    $result.='<table border="0"><tr bgcolor="#ffbbbb"><td>';
    $result.='This student has submitted ';
    $result.=(scalar(@badcollaborators) == 1) ? 'an invalid collaborator' : 'invalid collaborators';
    $result .= ': '.join(', ',@badcollaborators);
    $result .= '</td></tr></table>';
       }         
       if (scalar(@badcollaborators > $ncol)) {
    $result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>';
    $result .= 'This student has submitted too many '.
       'collaborators.  Maximum is '.$ncol.'.';
    $result .= '</td></tr></table>';
       }
    }
       }
       $request->print($result."\n");
   
       # print student answer/submission
       # Options are (1) Handgaded submission only
       #             (2) Last submission, includes submission that is not handgraded 
       #                  (for multi-response type part)
       #             (3) Last submission plus the parts info
       #             (4) The whole record for this student
       if ($ENV{'form.lastSub'} =~ /^(lastonly|hdgrade)$/) {
    if ($ENV{'form.'.$uname.':'.$udom.':submitted_by'}) {
       my $submitby=''.
    '<b>Collaborative submission by: </b>'.
    '<a href="javascript:viewSubmitter(\''.
    $ENV{'form.'.$uname.':'.$udom.':submitted_by'}.
    '\')"; TARGET=_self>'.
    $$fullname{$ENV{'form.'.$uname.':'.$udom.':submitted_by'}}.'</a>';
       $request->print($submitby);
    } else {
       my ($string,$timestamp)= &get_last_submission (\%record);
       my $lastsubonly=''.
    ($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
    $$timestamp)."</td></tr>\n";
       if ($$timestamp eq '') {
    $lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0]; 
       } else {
    for my $part (sort keys(%$handgrade)) {
       my ($responsetype,$foo) = split(/:/,$$handgrade{$part});
       my ($partid,$respid) = split(/_/,$part);
       if (!exists($record{'resource.'.$partid.'.'.$respid.'.submission'})) {
    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
       $partid.'</b> <font color="#999999">( ID '.$respid.
       ' )</font>&nbsp; &nbsp;'.
       '<font color="red">Nothing submitted - no attempts</font><br /><br />';
        } else {
    foreach (@$string) {
       my ($partid,$respid) = /^resource\.(\w+)\.(\w+)\.submission/;
       if ($part eq ($partid.'_'.$respid)) {
    my ($ressub,$subval) = split(/:/,$_,2);
                               # Similarity check
    my $similar='';
    my $oname;
    my $odom;
    my $ocrsid;
    my $oessay;
    my $osim;
    if($ENV{'form.checkPlag'}){
       ($oname,$odom,$ocrsid,$oessay,$osim)=&most_similar($uname,$udom,$subval);
       if ($osim) {
    $osim=int($osim*100.0);
    $similar='<hr /><h3><font color="#FF0000">Essay is '.$osim.
       '% similar to an essay by '.&Apache::loncommon::plainname($oname,$odom).
       '</font></h3><blockquote><i>'.
       &keywords_highlight($oessay).'</i></blockquote><hr />';
       }
    }
    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
       $partid.'</b> <font color="#999999">( ID '.$respid.
       ' )</font>&nbsp; &nbsp;'.
       ($record{"resource.$partid.$respid.uploadedurl"}?
        '<a href="'.
        &Apache::lonnet::tokenwrapper($record{"resource.$partid.$respid.uploadedurl"}).
        '"><img src="/adm/lonIcons/unknown.gif" border=0"> File uploaded by student</a> '.
        '<font color="red" size="1">Like all files provided by users, '.
        'this file may contain virusses</font><br />':'').
        '<b>Submitted Answer: </b>'.
        &cleanRecord($subval,$responsetype,$symb).
        '<br /><br />'.$similar."\n"
        if ($ENV{'form.lastSub'} eq 'lastonly' || 
    ($ENV{'form.lastSub'} eq 'hdgrade' && 
     $$handgrade{$part} =~ /:yes$/));
       }
    }
       }
    }
       }
       $lastsubonly.='</td></tr><tr bgcolor="#ffffff"><td>'."\n";
       $request->print($lastsubonly);
    }
       } elsif ($ENV{'form.lastSub'} eq 'datesub') {
    my (undef,$responseType,undef,$parts) = &showResourceInfo($url);
    $request->print(&displaySubByDates(\$symb,\%record,$parts,$responseType,$checkIcon));
       } elsif ($ENV{'form.lastSub'} =~ /^(last|all)$/) {
    $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
    $ENV{'request.course.id'},
    $last,'.submission',
    'Apache::grades::keywords_highlight'));
       }
   
       $request->print('<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'
    .$udom.'" />'."\n");
       
       # return if view submission with no grading option
       if ($ENV{'form.showgrading'} eq '' || (!&canmodify($usec))) {
    my $toGrade.='<input type="button" value="Grade Student" '.
       'onClick="javascript:checksubmit(this.form,\'Grade Student\',\''
       .$counter.'\');" TARGET=_self> &nbsp;'."\n" if (&canmodify($usec));
    $toGrade.='</td></tr></table></td></tr></table></form>'."\n";
    $toGrade.=&show_grading_menu_form($symb,$url) 
       if (($ENV{'form.command'} eq 'submission') || 
    ($ENV{'form.command'} eq 'processGroup' && $counter == $total));
    $request = print($toGrade);
    return;
       }
   
       # essay grading message center
       if ($ENV{'form.handgrade'} eq 'yes') {
    my ($lastname,$givenn) = split(/,/,$ENV{'form.fullname'});
    my $msgfor = $givenn.' '.$lastname;
    if (scalar(@col_fullnames) > 0) {
       my $lastone = pop @col_fullnames;
       $msgfor .= ', '.(join ', ',@col_fullnames).' and '.$lastone.'.';
    }
    $msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
    $result='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
       '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n";
    $result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
       ',\''.$msgfor.'\')"; TARGET=_self>'.
       'Compose Message to student'.(scalar(@col_fullnames) >= 1 ? 's' : '').'</a> &nbsp;'.
       '<img src="'.$request->dir_config('lonIconsURL').
       '/mailbkgrd.gif" width="14" height="10" name="mailicon'.$counter.'" />'."\n".
       '<br />&nbsp;(Message will be sent when you click on Save & Next below.)'."\n" 
       if ($ENV{'form.handgrade'} eq 'yes');
    $request->print($result);
       }
   
       my %seen = ();
       my @partlist;
       my @gradePartRespid;
       for (sort keys(%$handgrade)) {
    my ($partid,$respid) = split(/_/);
    next if ($seen{$partid} > 0);
    $seen{$partid}++;
    next if ($$handgrade{$_} =~ /:no$/ && $ENV{'form.lastSub'} =~ /^(hdgrade)$/);
    push @partlist,$partid;
    push @gradePartRespid,$partid.'.'.$respid;
   
    $request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
       }
       $result='<input type="hidden" name="partlist'.$counter.
    '" value="'.(join ":",@partlist).'" />'."\n";
       $result.='<input type="hidden" name="gradePartRespid'.
    '" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
       my $ctr = 0;
       while ($ctr < scalar(@partlist)) {
    $result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
       $partlist[$ctr].'" />'."\n";
    $ctr++;
       }
       $request->print($result.'</td></tr></table></td></tr></table>'."\n");
   
       # print end of form
       if ($counter == $total) {
    my $endform='<table border="0"><tr><td>'."\n";
    $endform.='<input type="button" value="Save & Next" '.
       'onClick="javascript:checksubmit(this.form,\'Save & Next\','.
       $total.','.scalar(@partlist).');" TARGET=_self> &nbsp;'."\n";
    my $ntstu ='<select name="NTSTU">'.
       '<option>1</option><option>2</option>'.
       '<option>3</option><option>5</option>'.
       '<option>7</option><option>10</option></select>'."\n";
    my $nsel = ($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1');
    $ntstu =~ s/<option>$nsel</<option selected="on">$nsel</;
    $endform.=$ntstu.'student(s) &nbsp;&nbsp;';
    $endform.='<input type="button" value="Previous" '.
       'onClick="javascript:checksubmit(this.form,\'Previous\');" TARGET=_self> &nbsp;'."\n".
       '<input type="button" value="Next" '.
       'onClick="javascript:checksubmit(this.form,\'Next\');" TARGET=_self> &nbsp;';
    $endform.='(Next and Previous (student) do not save the scores.)'."\n" ;
    $endform.='</td><tr></table></form>';
    $endform.=&show_grading_menu_form($symb,$url);
    $request->print($endform);
       }
       return '';
 }  }
   
   #--- Retrieve the last submission for all the parts
   sub get_last_submission {
       my ($returnhash)=@_;
       my (@string,$timestamp);
       if ($$returnhash{'version'}) {
    my %lasthash=();
    my ($version);
    for ($version=1;$version<=$$returnhash{'version'};$version++) {
       foreach (sort(split(/\:/,$$returnhash{$version.':keys'}))) {
    $lasthash{$_}=$$returnhash{$version.':'.$_};
      $timestamp = scalar(localtime($$returnhash{$version.':timestamp'}));
       }
    }
    foreach ((keys %lasthash)) {
       if ($_ =~ /\.submission$/) {
    my ($partid,$foo) = split(/submission$/,$_);
    my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
       '<font color="red">Draft Copy</font> ' : '';
    push @string, (join(':',$_,$draft.$lasthash{$_}));
       }
    }
       }
       @string = $string[0] eq '' ? '<font color="red">Nothing submitted - no attempts.</font>' : @string;
       return \@string,\$timestamp;
   }
   
   #--- High light keywords, with style choosen by user.
   sub keywords_highlight {
       my $string    = shift;
       my $size      = $ENV{'form.kwsize'} eq '0' ? '' : 'size='.$ENV{'form.kwsize'};
       my $styleon   = $ENV{'form.kwstyle'} eq ''  ? '' : $ENV{'form.kwstyle'};
       (my $styleoff = $styleon) =~ s/\</\<\//;
       my @keylist   = split(/[,\s+]/,$ENV{'form.keywords'});
       foreach (@keylist) {
    $string =~ s/\b\Q$_\E(\b|\.)/<font color\=$ENV{'form.kwclr'} $size\>$styleon$_$styleoff<\/font>/gi;
       }
       return $string;
   }
   
   #--- Called from submission routine
   sub processHandGrade {
       my ($request) = shift;
       my $url    = $ENV{'form.url'};
       my $symb   = $ENV{'form.symb'};
       my $button = $ENV{'form.gradeOpt'};
       my $ngrade = $ENV{'form.NCT'};
       my $ntstu  = $ENV{'form.NTSTU'};
       if ($button eq 'Save & Next') {
    my $ctr = 0;
    while ($ctr < $ngrade) {
       my ($uname,$udom) = split(/:/,$ENV{'form.unamedom'.$ctr});
       my ($errorflag,$pts,$wgt) = &saveHandGrade($request,$url,$symb,$uname,$udom,$ctr);
       if ($errorflag eq 'no_score') {
    $ctr++;
    next;
       }
       if ($errorflag eq 'not_allowed') {
    $request->print("<font color=\"red\">Not allowed to modify grades for $uname:$udom</font>");
    $ctr++;
    next;
       }
       my $includemsg = $ENV{'form.includemsg'.$ctr};
       my ($subject,$message,$msgstatus) = ('','','');
       if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
    $subject = $ENV{'form.msgsub'} if ($includemsg =~ /^msgsub/);
    my (@msgnum) = split(/,/,$includemsg);
    foreach (@msgnum) {
       $message.=$ENV{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
    }
    $message =&Apache::lonfeedback::clear_out_html($message);
    $message.="\n\nPoint".($pts > 1 ? 's':'').' awarded = '.$pts.' out of '.$wgt;
    $message.=" for <a href=\"".
       &Apache::lonnet::clutter($url).
       "?symb=$symb\">$ENV{'form.probTitle'}</a>";
    $msgstatus = &Apache::lonmsg::user_normal_msg ($uname,$udom,
          $ENV{'form.msgsub'},$message);
       }
       if ($ENV{'form.collaborator'.$ctr}) {
    my (@collaborators) = split(/:/,$ENV{'form.collaborator'.$ctr});
    foreach (@collaborators) {
       my ($errorflag,$pts,$wgt) = 
    &saveHandGrade($request,$url,$symb,$_,$udom,$ctr,$ENV{'form.unamedom'.$ctr});
       if ($errorflag eq 'not_allowed') {
    $request->print("<font color=\"red\">Not allowed to modify grades for $_:$udom</font>");
    next;
       } else {
    if ($message ne '') {
       $msgstatus = &Apache::lonmsg::user_normal_msg ($_,$udom,
      $ENV{'form.msgsub'},
      $message);
    }
       }
    }
       }
       $ctr++;
    }
       }
   
       if ($ENV{'form.handgrade'} eq 'yes') {
    # Keywords sorted in alphabatical order
    my $loginuser = $ENV{'user.name'}.':'.$ENV{'user.domain'};
    my %keyhash = ();
    $ENV{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;
    $ENV{'form.keywords'}           =~ s/^\s+|\s+$//;
    my (@keywords) = sort(split(/\s+/,$ENV{'form.keywords'}));
    $ENV{'form.keywords'} = join(' ',@keywords);
    $keyhash{$symb.'_keywords'}     = $ENV{'form.keywords'};
    $keyhash{$symb.'_subject'}      = $ENV{'form.msgsub'};
    $keyhash{$loginuser.'_kwclr'}   = $ENV{'form.kwclr'};
    $keyhash{$loginuser.'_kwsize'}  = $ENV{'form.kwsize'};
    $keyhash{$loginuser.'_kwstyle'} = $ENV{'form.kwstyle'};
   
    # message center - Order of message gets changed. Blank line is eliminated.
    # New messages are saved in ENV for the next student.
    # All messages are saved in nohist_handgrade.db
    my ($ctr,$idx) = (1,1);
    while ($ctr <= $ENV{'form.savemsgN'}) {
       if ($ENV{'form.savemsg'.$ctr} ne '') {
    $keyhash{$symb.'_savemsg'.$idx} = $ENV{'form.savemsg'.$ctr};
    $idx++;
       }
       $ctr++;
    }
    $ctr = 0;
    while ($ctr < $ngrade) {
       if ($ENV{'form.newmsg'.$ctr} ne '') {
    $keyhash{$symb.'_savemsg'.$idx} = $ENV{'form.newmsg'.$ctr};
    $ENV{'form.savemsg'.$idx} = $ENV{'form.newmsg'.$ctr};
    $idx++;
       }
       $ctr++;
    }
    $ENV{'form.savemsgN'} = --$idx;
    $keyhash{$symb.'_savemsgN'} = $ENV{'form.savemsgN'};
    my $putresult = &Apache::lonnet::put
       ('nohist_handgrade',\%keyhash,
        $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
        $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
       }
       # Called by Save & Refresh from Highlight Attribute Window
       my (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'1');
       if ($ENV{'form.refresh'} eq 'on') {
    my ($ctr,$total) = (0,0);
    while ($ctr < $ngrade) {
       $total++ if  $ENV{'form.unamedom'.$ctr} ne '';
       $ctr++;
    }
    $ENV{'form.NTSTU'}=$ngrade;
    $ctr = 0;
    while ($ctr < $total) {
       my $processUser = $ENV{'form.unamedom'.$ctr};
       ($ENV{'form.student'},$ENV{'form.userdom'}) = split(/:/,$processUser);
       $ENV{'form.fullname'} = $$fullname{$processUser};
       &submission($request,$ctr,$total-1);
       $ctr++;
    }
    return '';
       }
   
   # Go directly to grade student - from submission or link from chart page
       if ($button eq 'Grade Student') {
    (undef,undef,$ENV{'form.handgrade'},undef,undef) = &showResourceInfo($url);
    my $processUser = $ENV{'form.unamedom'.$ENV{'form.studentNo'}};
    ($ENV{'form.student'},$ENV{'form.userdom'}) = split(/:/,$processUser);
    $ENV{'form.fullname'} = $$fullname{$processUser};
    &submission($request,0,0);
    return '';
       }
   
       # Get the next/previous one or group of students
       my $firststu = $ENV{'form.unamedom0'};
       my $laststu = $ENV{'form.unamedom'.($ngrade-1)};
       my $ctr = 2;
       while ($laststu eq '') {
    $laststu  = $ENV{'form.unamedom'.($ngrade-$ctr)};
    $ctr++;
    $laststu = $firststu if ($ctr > $ngrade);
       }
   
       my (@parsedlist,@nextlist);
       my ($nextflg) = 0;
       foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    if ($nextflg == 1 && $button =~ /Next$/) {
       push @parsedlist,$_;
    }
    $nextflg = 1 if ($_ eq $laststu);
    if ($button eq 'Previous') {
       last if ($_ eq $firststu);
       push @parsedlist,$_;
    }
       }
       $ctr = 0;
       @parsedlist = reverse @parsedlist if ($button eq 'Previous');
       foreach my $student (@parsedlist) {
    my ($uname,$udom) = split(/:/,$student);
    if ($ENV{'form.submitonly'} eq 'yes') {
       my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
       my $statusflg = '';
       foreach (split(/:/,$ENV{'form.gradePartRespid'})){
    $statusflg = 1 if (exists ($record{'resource.'.$_.'.submission'}));
       }
       next if ($statusflg eq '');
    }
    push @nextlist,$student if ($ctr < $ntstu);
    last if ($ctr == $ntstu);
    $ctr++;
       }
   
       $ctr = 0;
       my $total = scalar(@nextlist)-1;
   
       foreach (sort @nextlist) {
    my ($uname,$udom,$submitter) = split(/:/);
    $ENV{'form.student'}  = $uname;
    $ENV{'form.userdom'}  = $udom;
    $ENV{'form.fullname'} = $$fullname{$_};
    &submission($request,$ctr,$total);
    $ctr++;
       }
       if ($total < 0) {
    my $the_end = '<h3><font color="red">LON-CAPA User Message</font></h3><br />'."\n";
    $the_end.='<b>Message: </b> No more students for this section or class.<br /><br />'."\n";
    $the_end.='Click on the button below to return to the grading menu.<br /><br />'."\n";
    $the_end.=&show_grading_menu_form ($symb,$url);
    $request->print($the_end);
       }
       return '';
   }
   
   #---- Save the score and award for each student, if changed
   sub saveHandGrade {
       my ($request,$url,$symb,$stuname,$domain,$newflg,$submitter) = @_;
       my $usec = &Apache::lonnet::getsection($domain,$stuname,
      $ENV{'request.course.id'});
       if (!&canmodify($usec)) { return('not_allowed'); }
       my %record     = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$domain,$stuname);
       my %newrecord  = ();
       my ($pts,$wgt) = ('','');
       foreach (split(/:/,$ENV{'form.partlist'.$newflg})) {
    my $dropMenu = $ENV{'form.GD_SEL'.$newflg.'_'.$_};
    if ($dropMenu eq 'excused') {
       if ($record{'resource.'.$_.'.solved'} ne 'excused') {
    $newrecord{'resource.'.$_.'.solved'} = 'excused';
    if (exists($record{'resource.'.$_.'.awarded'})) {
       $newrecord{'resource.'.$_.'.awarded'} = '';
    }
       $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
       }
    } elsif ($dropMenu eq 'reset status'
    && exists($record{'resource.'.$_.'.solved'})) { #don't bother if no old records -> no attempts
       $newrecord{'resource.'.$_.'.tries'} = 0;
       $newrecord{'resource.'.$_.'.solved'} = '';
       $newrecord{'resource.'.$_.'.award'} = '';
       $newrecord{'resource.'.$_.'.awarded'} = 0;
       $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
    } elsif ($dropMenu eq '') {
       $pts = ($ENV{'form.GD_BOX'.$newflg.'_'.$_} ne '' ? 
       $ENV{'form.GD_BOX'.$newflg.'_'.$_} : 
       $ENV{'form.RADVAL'.$newflg.'_'.$_});
       return 'no_score' if ($pts eq '' && $ENV{'form.GD_SEL'.$newflg.'_'.$_} eq '');
       $wgt = $ENV{'form.WGT'.$newflg.'_'.$_} eq '' ? 1 : 
    $ENV{'form.WGT'.$newflg.'_'.$_};
       my $partial= $pts/$wgt;
       next if ($partial eq $record{'resource.'.$_.'.awarded'}); #do not update score for part if not changed.
       $newrecord{'resource.'.$_.'.awarded'}  = $partial 
    if ($record{'resource.'.$_.'.awarded'} ne $partial);
       my $reckey = 'resource.'.$_.'.solved';
       if ($partial == 0) {
    $newrecord{$reckey} = 'incorrect_by_override' 
       if ($record{$reckey} ne 'incorrect_by_override');
       } else {
    $newrecord{$reckey} = 'correct_by_override' 
       if ($record{$reckey} ne 'correct_by_override');
       }
       $newrecord{'resource.'.$_.'.submitted_by'} = $submitter 
    if ($submitter && ($record{'resource.'.$_.'.submitted_by'} ne $submitter));
       $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
    }
       }
   
       if (scalar(keys(%newrecord)) > 0) {
    &Apache::lonnet::cstore(\%newrecord,$symb,
    $ENV{'request.course.id'},$domain,$stuname);
       }
       return '',$pts,$wgt;
   }
   
   #--------------------------------------------------------------------------------------
   #
   #-------------------------- Next few routines handles grading by section or whole class
   #
   #--- Javascript to handle grading by section or whole class
   sub viewgrades_js {
       my ($request) = shift;
   
       $request->print(<<VIEWJAVASCRIPT);
   <script type="text/javascript" language="javascript">
      function writePoint(partid,weight,point) {
    var radioButton = document.classgrade["RADVAL_"+partid];
    var textbox = document.classgrade["TEXTVAL_"+partid];
    if (point == "textval") {
       point = document.classgrade["TEXTVAL_"+partid].value;
       if (isNaN(point) || parseFloat(point) < 0) {
    alert("A number equal or greater than 0 is expected. Entered value = "+parseFloat(point));
    var resetbox = false;
    for (var i=0; i<radioButton.length; i++) {
       if (radioButton[i].checked) {
    textbox.value = i;
    resetbox = true;
       }
    }
    if (!resetbox) {
       textbox.value = "";
    }
    return;
       }
       if (parseFloat(point) > parseFloat(weight)) {
    var resp = confirm("You entered a value ("+parseFloat(point)+
      ") greater than the weight for the part. Accept?");
    if (resp == false) {
       textbox.value = "";
       return;
    }
       }
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
    if (parseFloat(point) == i) {
       radioButton[i].checked=true;
    }
       }
   
    } else {
       textbox.value = parseFloat(point);
    }
    for (i=0;i<document.classgrade.total.value;i++) {
       var user = document.classgrade["ctr"+i].value;
       var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
       var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
       var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
       if (saveval != "correct") {
    scorename.value = point;
    if (selname[0].selected != true) {
       selname[0].selected = true;
    }
       }
    }
    document.classgrade["SELVAL_"+partid][0].selected = true;
       }
   
       function writeRadText(partid,weight) {
    var selval   = document.classgrade["SELVAL_"+partid];
    var radioButton = document.classgrade["RADVAL_"+partid];
    var textbox = document.classgrade["TEXTVAL_"+partid];
    if (selval[1].selected || selval[2].selected) {
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
   
       }
       textbox.value = "";
   
       for (i=0;i<document.classgrade.total.value;i++) {
    var user = document.classgrade["ctr"+i].value;
    var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
    var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
    if (saveval != "correct") {
       scorename.value = "";
       if (selval[1].selected) {
    selname[1].selected = true;
       } else {
    selname[2].selected = true;
    if (Number(document.classgrade["GD_"+user+"_"+partid+"_tries"].value)) 
    {document.classgrade["GD_"+user+"_"+partid+"_tries"].value = '0';}
       }
    }
       }
    } else {
       for (i=0;i<document.classgrade.total.value;i++) {
    var user = document.classgrade["ctr"+i].value;
    var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
    var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
    if (saveval != "correct") {
       scorename.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
       selname[0].selected = true;
    }
       }
    }    
       }
   
       function changeSelect(partid,user) {
    var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
    var textbox = document.classgrade["GD_"+user+'_'+partid+"_awarded"];
    var point  = textbox.value;
    var weight = document.classgrade["weight_"+partid].value;
   
    if (isNaN(point) || parseFloat(point) < 0) {
       alert("A number equal or greater than 0 is expected. Entered value = "+parseFloat(point));
       textbox.value = "";
       return;
    }
    if (parseFloat(point) > parseFloat(weight)) {
       var resp = confirm("You entered a value ("+parseFloat(point)+
          ") greater than the weight of the part. Accept?");
       if (resp == false) {
    textbox.value = "";
    return;
       }
    }
    selval[0].selected = true;
       }
   
       function changeOneScore(partid,user) {
    var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
    if (selval[1].selected || selval[2].selected) {
       document.classgrade["GD_"+user+'_'+partid+"_awarded"].value = "";
       if (selval[2].selected) {
    document.classgrade["GD_"+user+'_'+partid+"_tries"].value = "0";
       }
    }
       }
   
       function resetEntry(numpart) {
    for (ctpart=0;ctpart<numpart;ctpart++) {
       var partid = document.classgrade["partid_"+ctpart].value;
       var radioButton = document.classgrade["RADVAL_"+partid];
       var textbox = document.classgrade["TEXTVAL_"+partid];
       var selval  = document.classgrade["SELVAL_"+partid];
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
   
       }
       textbox.value = "";
       selval[0].selected = true;
   
       for (i=0;i<document.classgrade.total.value;i++) {
    var user = document.classgrade["ctr"+i].value;
    var resetscore = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
    resetscore.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
    var resettries = document.classgrade["GD_"+user+"_"+partid+"_tries"];
    resettries.value = document.classgrade["GD_"+user+"_"+partid+"_tries_s"].value;
    var saveselval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
    if (saveselval == "excused") {
       if (selname[1].selected == false) { selname[1].selected = true;}
    } else {
       if (selname[0].selected == false) {selname[0].selected = true};
    }
       }
    }
       }
   
   </script>
   VIEWJAVASCRIPT
   }
   
   #--- show scores for a section or whole class w/ option to change/update a score
 sub viewgrades {  sub viewgrades {
   my ($request) = @_;      my ($request) = shift;
   my $result='';      &viewgrades_js($request);
   
       my ($symb,$url) = ($ENV{'form.symb'},$ENV{'form.url'}); 
       my $result='<h3><font color="#339933">Manual Grading</font></h3>';
   
   #get resource reference      $result.='<font size=+1><b>Current Resource: </b>'.$ENV{'form.probTitle'}.'</font>'."\n";
   my $url=$ENV{'form.url'};  
   $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;      #view individual student submission form - called using Javascript viewOneStudent
   my $symb=$ENV{'form.symb'};      $result.=&jscriptNform($url,$symb);
   if (!$symb) { $symb=&Apache::lonnet::symbread($url); }  
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }      #beginning of class grading form
       $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
   #get classlist   '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
   my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});   '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
   my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};  
   #print "Found $cdom:$cnum:$chome<br />";  
   my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');  
   my $headerclr = '"#ccffff"';  
   my $cellclr = '"#ffffcc"';  
   
   #get list of parts for this problem  
   my (@parts) = &getpartlist($url);  
   
   $request->print ("<h2><font color=\"#339966\">Manual Grading</font></h2>");  
   
   #start the form  
   $result = '<form action="/adm/grades" method="post">'."\n".  
     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".  
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".  
  '<input type="hidden" name="command" value="editgrades" />'."\n".   '<input type="hidden" name="command" value="editgrades" />'."\n".
   '<input type="submit" name="submit" value="Submit Changes" />'."\n".   '<input type="hidden" name="section" value="'.$ENV{'form.section'}.'" />'."\n".
     '<table border=0><tr><td bgcolor="#999999">'."\n".   '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n".
      '<table border=0>'."\n".   '<input type="hidden" name="Status" value="'.$ENV{'form.Status'}.'" />'."\n".
       '<tr><td bgcolor='.$headerclr.'>UserId</td><td bgcolor='.$headerclr.'>Domain</td>'."\n";   '<input type="hidden" name="probTitle" value="'.$ENV{'form.probTitle'}.'" />'."\n";
   foreach my $part (@parts) {  
      my $display=&Apache::lonnet::metadata($url,$part.'.display');      my $sectionClass;
      if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }      if ($ENV{'form.section'} eq 'all') {
      $result.='<td bgcolor='.$headerclr.'>'.$display.'</td>'."\n";   $sectionClass='Class </h3>';
    }      } elsif ($ENV{'form.section'} eq 'no') {
   $result.="</tr>";   $sectionClass='Students in no Section </h3>';
   #get info for each student      } else {
   foreach my $student ( sort(@{ $classlist{'allids'} }) ) {   $sectionClass='Students in Section '.$ENV{'form.section'}.'</h3>';
     $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);      }
   }      $result.='<h3>Assign Common Grade To '.$sectionClass;
   $result.='</table></td></tr></table><input type="submit" name="submit" value="Submit Changes" /></form>';      $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
    '<table border=0><tr bgcolor="#ffffdd"><td>';
       #radio buttons/text box for assigning points for a section or class.
       #handles different parts of a problem
       my ($partlist,$handgrade) = &response_type($url,$symb);
       my %weight = ();
       my $ctsparts = 0;
       $result.='<table border="0">';
       my %seen = ();
       for (sort keys(%$handgrade)) {
    my ($partid,$respid) = split (/_/,$_,2);
    next if $seen{$partid};
    $seen{$partid}++;
    my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
    my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
    $weight{$partid} = $wgt eq '' ? '1' : $wgt;
   
    $result.='<input type="hidden" name="partid_'.
       $ctsparts.'" value="'.$partid.'" />'."\n";
    $result.='<input type="hidden" name="weight_'.
       $partid.'" value="'.$weight{$partid}.'" />'."\n";
    $result.='<tr><td><b>Part  '.$partid.'&nbsp; &nbsp;Point:</b> </td><td>';
    $result.='<table border="0"><tr>';  
    my $ctr = 0;
    while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
       $result.= '<td><input type="radio" name="RADVAL_'.$partid.'" '.
    'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
    ','.$ctr.')" />'.$ctr."</td>\n";
       $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
       $ctr++;
    }
    $result.='</tr></table>';
    $result.= '</td><td><b> or </b><input type="text" name="TEXTVAL_'.
       $partid.'" size="4" '.'onChange="javascript:writePoint(\''.
    $partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
       $weight{$partid}.' (problem weight)</td>'."\n";
    $result.= '</td><td><select name="SELVAL_'.$partid.'"'.
       'onChange="javascript:writeRadText(\''.$partid.'\','.
    $weight{$partid}.')"> '.
       '<option selected="on"> </option>'.
       '<option>excused</option>'.
       '<option>reset status</option></select></td></tr>'."\n";
    $ctsparts++;
       }
       $result.='</table>'.'</td></tr></table>'.'</td></tr></table>'."\n".
    '<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
       $result.='<input type="button" value="Reset" '.
    'onClick="javascript:resetEntry('.$ctsparts.');" TARGET=_self>';
   
       #table listing all the students in a section/class
       #header of table
       $result.= '<h3>Assign Grade to Specific Students in '.$sectionClass;
       $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
    '<table border=0><tr bgcolor="#deffff"><td>&nbsp;<b>No.</b>&nbsp;</td>'.
    '<td>'.&nameUserString('header')."</td>\n";
       my (@parts) = sort(&getpartlist($url));
       foreach my $part (@parts) {
    my $display=&Apache::lonnet::metadata($url,$part.'.display');
    $display =~ s|^Number of Attempts|Tries<br />|; # makes the column narrower
    if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
    if ($display =~ /^Partial Credit Factor/) {
       my ($partid) = &split_part_type($part);
       $result.='<td><b>Score Part '.$partid.'<br />(weight = '.
    $weight{$partid}.')</b></td>'."\n";
       next;
    }
    $display =~ s|Problem Status|Grade Status<br />|;
    $result.='<td><b>'.$display.'</b></td>'."\n";
       }
       $result.='</tr>';
   
   return $result;      #get info for each student
       #list all the students - with points and grade status
       my (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'1');
       my $ctr = 0;
       foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my $uname = $_;
    $uname=~s/:/_/;
    $result.='<input type="hidden" name="ctr'.$ctr.'" value="'.$uname.'" />'."\n";
    $ctr++;
    $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},
      $_,$$fullname{$_},\@parts,\%weight,$ctr);
       }
       $result.='</table></td></tr></table>';
       $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
       $result.='<input type="button" value="Save" '.
    'onClick="javascript:submit();" TARGET=_self /></form>'."\n";
       if (scalar(%$fullname) eq 0) {
    my $colspan=3+scalar(@parts);
    $result='<font color="red">There are no students in section "'.$ENV{'form.section'}.
       '" with enrollment status "'.$ENV{'form.Status'}.'" to modify or grade.</font>';
       }
       $result.=&show_grading_menu_form($symb,$url);
       return $result;
 }  }
   
   #--- call by previous routine to display each student
   sub viewstudentgrade {
       my ($url,$symb,$courseid,$student,$fullname,$parts,$weight,$ctr) = @_;
       my ($uname,$udom) = split(/:/,$student);
       $student=~s/:/_/;
       my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
       my $result='<tr bgcolor="#ffffdd"><td align="right">'.$ctr.'&nbsp;</td><td>&nbsp;'.
    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
    '\')"; TARGET=_self>'.$fullname.'</a> '.
    '<font color="#999999">('.$uname.($ENV{'user.domain'} eq $udom ? '' : ':'.$udom).')</font></td>'."\n";
       foreach my $apart (@$parts) {
    my ($part,$type) = &split_part_type($apart);
    my $score=$record{"resource.$part.$type"};
    if ($type eq 'awarded') {
       my $pts = $score eq '' ? '' : $score*$$weight{$part};
       $result.='<input type="hidden" name="'.
    'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
       $result.='<td align="middle"><input type="text" name="'.
    'GD_'.$student.'_'.$part.'_awarded" '.
    'onChange="javascript:changeSelect(\''.$part.'\',\''.$student.
    '\')" value="'.$pts.'" size="4" /></td>'."\n";
    } elsif ($type eq 'solved') {
       my ($status,$foo)=split(/_/,$score,2);
       $status = 'nothing' if ($status eq '');
       $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
    $part.'_solved_s" value="'.$status.'" />'."\n";
       $result.='<td align="middle">&nbsp;<select name="'.
    'GD_'.$student.'_'.$part.'_solved" '.
    'onChange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
       $result.= (($status eq 'excused') ? '<option> </option><option selected="on">excused</option>' 
    : '<option selected="on"> </option><option>excused</option>')."\n";
       $result.='<option>reset status</option>';
       $result.="</select>&nbsp;</td>\n";
    } else {
       $result.='<input type="hidden" name="'.
    'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
       "\n";
       $result.='<td align="middle"><input type="text" name="'.
    'GD_'.$student.'_'.$part.'_'.$type.'" '.
    'value="'.$score.'" size="4" /></td>'."\n";
    }
       }
       $result.='</tr>';
       return $result;
   }
   
   #--- change scores for all the students in a section/class
   #    record does not get update if unchanged
 sub editgrades {  sub editgrades {
   my ($request) = @_;      my ($request) = @_;
   my $result='';  
       my $symb=$ENV{'form.symb'};
       my $url =$ENV{'form.url'};
       my $title='<h3><font color="#339933">Current Grade Status</font></h3>';
       $title.='<font size=+1><b>Current Resource: </b>'.$ENV{'form.probTitle'}.'</font><br />'."\n";
       $title.='<font size=+1><b>Section: </b>'.$ENV{'form.section'}.'</font>'."\n";
   
       my $result= '<table border="0"><tr><td bgcolor="#777777">'."\n";
       $result.= '<table border="0"><tr bgcolor="#deffff">'.
    '<td rowspan=2 valign="center">&nbsp;<b>No.</b>&nbsp;</td>'.
    '<td rowspan=2 valign="center">'.&nameUserString('header')."</td>\n";
   
       my %scoreptr = (
       'correct'  =>'correct_by_override',
       'incorrect'=>'incorrect_by_override',
       'excused'  =>'excused',
       'ungraded' =>'ungraded_attempted',
       'nothing'  => '',
       );
       my ($classlist,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');
   
       my (@partid);
       my %weight = ();
       my %columns = ();
       my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
   
       my (@parts) = sort(&getpartlist($url));
       my $header;
       while ($ctr < $ENV{'form.totalparts'}) {
    my $partid = $ENV{'form.partid_'.$ctr};
    push @partid,$partid;
    $weight{$partid} = $ENV{'form.weight_'.$partid};
    $ctr++;
       }
       foreach my $partid (@partid) {
    $header .= '<td align="center">&nbsp;<b>Old Score</b>&nbsp;</td>'.
       '<td align="center">&nbsp;<b>New Score</b>&nbsp;</td>';
    $columns{$partid}=2;
    foreach my $stores (@parts) {
       my ($part,$type) = &split_part_type($stores);
       if ($part !~ m/^\Q$partid\E/) { next;}
       if ($type eq 'awarded' || $type eq 'solved') { next; }
       my $display=&Apache::lonnet::metadata($url,$stores.'.display');
       $display =~ s/\[Part: (\w)+\]//;
       $display =~ s/Number of Attempts/Tries/;
       $header .= '<td align="center">&nbsp;<b>Old '.$display.'</b>&nbsp;</td>'.
    '<td align="center">&nbsp;<b>New '.$display.'</b>&nbsp;</td>';
       $columns{$partid}+=2;
    }
       }
       foreach my $partid (@partid) {
    $result .= '<td colspan="'.$columns{$partid}.
       '" align="center"><b>Part '.$partid.
       '</b> (Weight = '.$weight{$partid}.')</td>';
   
       }
       $result .= '</tr><tr bgcolor="#deffff">';
       $result .= $header;
       $result .= '</tr>'."\n";
       my $noupdate;
       my ($updateCtr,$noupdateCtr) = (1,1);
       for ($i=0; $i<$ENV{'form.total'}; $i++) {
    my $line;
    my $user = $ENV{'form.ctr'.$i};
    my $usercolon = $user;
    $usercolon =~s/_/:/;
    my ($uname,$udom)=split(/_/,$user);
    my %newrecord;
    my $updateflag = 0;
    $line .= '<td>'.&nameUserString(undef,$$fullname{$usercolon},$uname,$udom).'</td>';
    my $usec=$classlist->{"$uname:$udom"}[5];
    if (!&canmodify($usec)) {
       my $numcols=scalar(@partid)*4+2;
       $noupdate.=$line."<td colspan=\"$numcols\"><font color=\"red\">Not allowed to modify student</font></td></tr>";
       next;
    }
    foreach (@partid) {
       my $old_aw    = $ENV{'form.GD_'.$user.'_'.$_.'_awarded_s'};
       my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
       my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
       my $old_score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};
   
       my $awarded   = $ENV{'form.GD_'.$user.'_'.$_.'_awarded'};
       my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
       my $partial   = $awarded eq '' ? '' : $pcr;
       my $score;
       if ($partial eq '') {
    $score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};
       } elsif ($partial > 0) {
    $score = 'correct_by_override';
       } elsif ($partial == 0) {
    $score = 'incorrect_by_override';
       }
       my $dropMenu = $ENV{'form.GD_'.$user.'_'.$_.'_solved'};
       $score = 'excused' if (($dropMenu eq 'excused') && ($score ne 'excused'));
   
       if ($dropMenu eq 'reset status' &&
    $old_score ne '') { # ignore if no previous attempts => nothing to reset
    $newrecord{'resource.'.$_.'.tries'} = 0;
    $newrecord{'resource.'.$_.'.solved'} = '';
    $newrecord{'resource.'.$_.'.award'} = '';
    $newrecord{'resource.'.$_.'.awarded'} = 0;
    $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
    $updateflag = 1;
       } elsif (!($old_part eq $partial && $old_score eq $score)) {
    $updateflag = 1;
    $newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
    $newrecord{'resource.'.$_.'.solved'}   = $score;
    $rec_update++;
       }
   
       $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
    '<td align="center">'.$awarded.
    ($score eq 'excused' ? $score : '').'&nbsp;</td>';
   
   
       my $partid=$_;
       foreach my $stores (@parts) {
    my ($part,$type) = &split_part_type($stores);
    if ($part !~ m/^\Q$partid\E/) { next;}
    if ($type eq 'awarded' || $type eq 'solved') { next; }
    my $old_aw    = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
    my $awarded   = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type};
    if ($awarded ne '' && $awarded ne $old_aw) {
       $newrecord{'resource.'.$part.'.'.$type}= $awarded;
       $newrecord{'resource.'.$part.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
       $updateflag=1;
    }
    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
       '<td align="center">'.$awarded.'&nbsp;</td>';
       }
    }
    $line.='</tr>'."\n";
    if ($updateflag) {
       $count++;
       &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},
       $udom,$uname);
       $result.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line;
       $updateCtr++;
    } else {
       $noupdate.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line;
       $noupdateCtr++;
    }
       }
       if ($noupdate) {
   # my $numcols=(scalar(@partid)*(scalar(@parts)-1)*2)+3;
    my $numcols=scalar(@partid)*4+2;
    $result .= '<tr bgcolor="#ffffff"><td align="center" colspan="'.$numcols.'">No Changes Occurred For the Students Below</td></tr>'.$noupdate;
       }
       $result .= '</table></td></tr></table>'."\n".
    &show_grading_menu_form ($symb,$url);
       my $msg = '<br /><b>Number of records updated = '.$rec_update.
    ' for '.$count.' student'.($count <= 1 ? '' : 's').'.</b><br />'.
    '<b>Total number of students = '.$ENV{'form.total'}.'</b><br />';
       return $title.$msg.$result;
   }
   
   sub split_part_type {
       my ($partstr) = @_;
       my ($temp,@allparts)=split(/_/,$partstr);
       my $type=pop(@allparts);
       my $part=join('.',@allparts);
       return ($part,$type);
   }
   
   my $symb=$ENV{'form.symb'};  #------------- end of section for handling grading by section/class ---------
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$symb:$ENV{'form.url'}"); return ''; }  #
   my $url=$ENV{'form.url'};  #----------------------------------------------------------------------------
   #get classlist  
   my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});  
   my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};  #----------------------------------------------------------------------------
   #print "Found $cdom:$cnum:$chome<br />";  #
   my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');  #-------------------------- Next few routines handles grading by csv upload
   #
   #get list of parts for this problem  #--- Javascript to handle csv upload
   my (@parts) = &getpartlist($url);  sub csvupload_javascript_reverse_associate {
     return(<<ENDPICK);
   $result.='<form action="/adm/grades" method="post">'."\n".    function verify(vf) {
     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".      var foundsomething=0;
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".      var founduname=0;
  '<input type="hidden" name="command" value="viewgrades" />'."\n".      var founddomain=0;
   '<input type="submit" name="submit" value="See Grades" /> <br />'."\n";      for (i=0;i<=vf.nfields.value;i++) {
         tw=eval('vf.f'+i+'.selectedIndex');
         if (i==0 && tw!=0) { founduname=1; }
         if (i==1 && tw!=0) { founddomain=1; }
         if (i!=0 && i!=1 && tw!=0) { foundsomething=1; }
       }
       if (founduname==0 || founddomain==0) {
         alert('You need to specify at both the username and domain');
         return;
       }
       if (foundsomething==0) {
         alert('You need to specify at least one grading field');
         return;
       }
       vf.submit();
     }
     function flip(vf,tf) {
       var nw=eval('vf.f'+tf+'.selectedIndex');
       var i;
       for (i=0;i<=vf.nfields.value;i++) {
         //can not pick the same destination field for both name and domain
         if (((i ==0)||(i ==1)) && 
             ((tf==0)||(tf==1)) && 
             (i!=tf) &&
             (eval('vf.f'+i+'.selectedIndex')==nw)) {
           eval('vf.f'+i+'.selectedIndex=0;')
         }
       }
     }
   ENDPICK
   }
   
   foreach my $student ( sort(@{ $classlist{'allids'} }) ) {  sub csvupload_javascript_forward_associate {
     $result.=&setstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);    return(<<ENDPICK);
     function verify(vf) {
       var foundsomething=0;
       var founduname=0;
       var founddomain=0;
       for (i=0;i<=vf.nfields.value;i++) {
         tw=eval('vf.f'+i+'.selectedIndex');
         if (tw==1) { founduname=1; }
         if (tw==2) { founddomain=1; }
         if (tw>2) { foundsomething=1; }
       }
       if (founduname==0 || founddomain==0) {
         alert('You need to specify at both the username and domain');
         return;
       }
       if (foundsomething==0) {
         alert('You need to specify at least one grading field');
         return;
       }
       vf.submit();
     }
     function flip(vf,tf) {
       var nw=eval('vf.f'+tf+'.selectedIndex');
       var i;
       //can not pick the same destination field twice
       for (i=0;i<=vf.nfields.value;i++) {
         if ((i!=tf) && (eval('vf.f'+i+'.selectedIndex')==nw)) {
           eval('vf.f'+i+'.selectedIndex=0;')
         }
       }
   }    }
   ENDPICK
   }
   
   sub csvuploadmap_header {
       my ($request,$symb,$url,$datatoken,$distotal)= @_;
       my $javascript;
       if ($ENV{'form.upfile_associate'} eq 'reverse') {
    $javascript=&csvupload_javascript_reverse_associate();
       } else {
    $javascript=&csvupload_javascript_forward_associate();
       }
   
       my ($result) = &showResourceInfo($url,$ENV{'form.probTitle'});
   
       $request->print(<<ENDPICK);
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
   <h3><font color="#339933">Uploading Class Grades</font></h3>
   $result
   <hr>
   <h3>Identify fields</h3>
   Total number of records found in file: $distotal <hr />
   Enter as many fields as you can. The system will inform you and bring you back
   to this page if the data selected is insufficient to run your class.<hr />
   <input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
   <input type="hidden" name="associate"  value="" />
   <input type="hidden" name="phase"      value="three" />
   <input type="hidden" name="datatoken"  value="$datatoken" />
   <input type="hidden" name="fileupload" value="$ENV{'form.fileupload'}" />
   <input type="hidden" name="upfiletype" value="$ENV{'form.upfiletype'}" />
   <input type="hidden" name="upfile_associate" 
                                          value="$ENV{'form.upfile_associate'}" />
   <input type="hidden" name="symb"       value="$symb" />
   <input type="hidden" name="url"        value="$url" />
   <input type="hidden" name="saveState"  value="$ENV{'form.saveState'}" />
   <input type="hidden" name="probTitle"  value="$ENV{'form.probTitle'}" />
   <input type="hidden" name="command"    value="csvuploadassign" />
   <hr />
   <script type="text/javascript" language="Javascript">
   $javascript
   </script>
   ENDPICK
       return '';
   
   $result.='<input type="submit" name="submit" value="See Grades" /></table></form>';  
   return $result;  
 }  }
   
 sub send_header {  sub csvupload_fields {
   my ($request)= @_;      my ($url) = @_;
   $request->print(&Apache::lontexconvert::header());      my (@parts) = &getpartlist($url);
 #  $request->print("      my @fields=(['username','Student Username'],['domain','Student Domain']);
 #<script>      foreach my $part (sort(@parts)) {
 #remotewindow=open('','homeworkremote');   my @datum;
 #remotewindow.close();   my $display=&Apache::lonnet::metadata($url,$part.'.display');
 #</script>");    my $name=$part;
   $request->print('<body bgcolor="#FFFFFF">');   if  (!$display) { $display = $name; }
    @datum=($name,$display);
    push(@fields,\@datum);
       }
       return (@fields);
 }  }
   
 sub send_footer {  sub csvuploadmap_footer {
   my ($request)= @_;      my ($request,$i,$keyfields) =@_;
   $request->print('</body>');      $request->print(<<ENDPICK);
   $request->print(&Apache::lontexconvert::footer());  </table>
   <input type="hidden" name="nfields" value="$i" />
   <input type="hidden" name="keyfields" value="$keyfields" />
   <input type="button" onClick="javascript:verify(this.form)" value="Assign Grades" /><br />
   </form>
   ENDPICK
   }
   
   sub upcsvScores_form {
       my ($request) = shift;
       my ($symb,$url)=&get_symb_and_url($request);
       if (!$symb) {return '';}
       my $result =<<CSVFORMJS;
   <script type="text/javascript" language="javascript">
       function checkUpload(formname) {
    if (formname.upfile.value == "") {
       alert("Please use the browse button to select a file from your local directory.");
       return false;
    }
    formname.submit();
       }
       </script>
   CSVFORMJS
       $ENV{'form.probTitle'} = &Apache::lonnet::gettitle($symb);
       my ($table) = &showResourceInfo($url,$ENV{'form.probTitle'});
       $result.=$table;
       $result.='<br /><table width=100% border=0><tr><td bgcolor="#777777">'."\n";
       $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
       $result.='&nbsp;<b>Specify a file containing the class scores for current resource'.
    '.</b></td></tr>'."\n";
       $result.='<tr bgcolor=#ffffe6><td>'."\n";
       my $upfile_select=&Apache::loncommon::upfile_select_html();
       $result.=<<ENDUPFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
   <input type="hidden" name="symb" value="$symb" />
   <input type="hidden" name="url" value="$url" />
   <input type="hidden" name="command" value="csvuploadmap" />
   <input type="hidden" name="probTitle" value="$ENV{'form.probTitle'}" />
   <input type="hidden" name="saveState"  value="$ENV{'form.saveState'}" />
   $upfile_select
   <br /><input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scores" />
   
   </form>
   ENDUPFORM
       $result.='</td></tr></table>'."\n";
       $result.='</td></tr></table><br /><br />'."\n";
       $result.=&show_grading_menu_form($symb,$url);
       return $result;
   }
   
   
   sub csvuploadmap {
       my ($request)= @_;
       my ($symb,$url)=&get_symb_and_url($request);
       if (!$symb) {return '';}
   
       my $datatoken;
       if (!$ENV{'form.datatoken'}) {
    $datatoken=&Apache::loncommon::upfile_store($request);
       } else {
    $datatoken=$ENV{'form.datatoken'};
    &Apache::loncommon::load_tmp_file($request);
       }
       my @records=&Apache::loncommon::upfile_record_sep();
       &csvuploadmap_header($request,$symb,$url,$datatoken,$#records+1);
       my ($i,$keyfields);
       if (@records) {
    my @fields=&csvupload_fields($url);
   
    if ($ENV{'form.upfile_associate'} eq 'reverse') {
       &Apache::loncommon::csv_print_samples($request,\@records);
       $i=&Apache::loncommon::csv_print_select_table($request,\@records,
     \@fields);
       foreach (@fields) { $keyfields.=$_->[0].','; }
       chop($keyfields);
    } else {
       unshift(@fields,['none','']);
       $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
       \@fields);
       my %sone=&Apache::loncommon::record_sep($records[0]);
       $keyfields=join(',',sort(keys(%sone)));
    }
       }
       &csvuploadmap_footer($request,$i,$keyfields);
       $request->print(&show_grading_menu_form($symb,$url));
   
       return '';
   }
   
   sub csvuploadassign {
       my ($request)= @_;
       my ($symb,$url)=&get_symb_and_url($request);
       if (!$symb) {return '';}
       &Apache::loncommon::load_tmp_file($request);
       my @gradedata = &Apache::loncommon::upfile_record_sep();
       my @keyfields = split(/\,/,$ENV{'form.keyfields'});
       my %fields=();
       for (my $i=0; $i<=$ENV{'form.nfields'}; $i++) {
    if ($ENV{'form.upfile_associate'} eq 'reverse') {
       if ($ENV{'form.f'.$i} ne 'none') {
    $fields{$keyfields[$i]}=$ENV{'form.f'.$i};
       }
    } else {
       if ($ENV{'form.f'.$i} ne 'none') {
    $fields{$ENV{'form.f'.$i}}=$keyfields[$i];
       }
    }
       }
       $request->print('<h3>Assigning Grades</h3>');
       my $courseid=$ENV{'request.course.id'};
       my ($classlist) = &getclasslist('all',0);
       my @notallowed;
       my @skipped;
       my $countdone=0;
       foreach my $grade (@gradedata) {
    my %entries=&Apache::loncommon::record_sep($grade);
    my $username=$entries{$fields{'username'}};
    my $domain=$entries{$fields{'domain'}};
    if (!exists($$classlist{"$username:$domain"})) {
       push(@skipped,"$username:$domain");
       next;
    }
    my $usec=$classlist->{"$username:$domain"}[5];
    if (!&canmodify($usec)) {
       push(@notallowed,"$username:$domain");
       next;
    }
    my %grades;
    foreach my $dest (keys(%fields)) {
       if ($dest eq 'username' || $dest eq 'domain') { next; }
       if ($entries{$fields{$dest}} eq '') { next; }
       my $store_key=$dest;
       $store_key=~s/^stores/resource/;
       $store_key=~s/_/\./g;
       $grades{$store_key}=$entries{$fields{$dest}};
    }
    $grades{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";
    &Apache::lonnet::cstore(\%grades,$symb,$ENV{'request.course.id'},
    $domain,$username);
    $request->print('.');
    $request->rflush();
    $countdone++;
       }
       $request->print("<br />Stored $countdone students\n");
       if (@skipped) {
    $request->print('<p<font size="+1"><b>Skipped Students</b></font></p>');
    foreach my $student (@skipped) { $request->print("$student<br />\n"); }
       }
       if (@notallowed) {
    $request->print('<p><font size="+1" color="red"><b>Students Not Allowed to Modify</b></font></p>');
    foreach my $student (@notallowed) { $request->print("$student<br />\n"); }
       }
       $request->print("<br />\n");
       $request->print(&show_grading_menu_form($symb,$url));
       return '';
   }
   #------------- end of section for handling csv file upload ---------
   #
   #-------------------------------------------------------------------
   #
   #-------------- Next few routines handle grading by page/sequence
   #
   #--- Select a page/sequence and a student to grade
   sub pickStudentPage {
       my ($request) = shift;
   
       $request->print(<<LISTJAVASCRIPT);
   <script type="text/javascript" language="javascript">
   
   function checkPickOne(formname) {
       if (radioSelection(formname.student) == null) {
    alert("Please select the student you wish to grade.");
    return;
       }
       ptr = pullDownSelection(formname.selectpage);
       formname.page.value = formname["page"+ptr].value;
       formname.title.value = formname["title"+ptr].value;
       formname.submit();
   }
   
   </script>
   LISTJAVASCRIPT
       &commonJSfunctions($request);
       my ($symb,$url) = &get_symb_and_url($request);
       my $cdom      = $ENV{"course.$ENV{'request.course.id'}.domain"};
       my $cnum      = $ENV{"course.$ENV{'request.course.id'}.num"};
       my $getsec    = $ENV{'form.section'} eq '' ? 'all' : $ENV{'form.section'};
   
       my $result='<h3><font color="#339933">&nbsp;'.
    'Manual Grading by Page or Sequence</font></h3>';
   
       $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
       $result.='&nbsp;<b>Problems from:</b> <select name="selectpage">'."\n";
       my ($titles,$symbx) = &getSymbMap($request);
       my ($curpage) =&Apache::lonnet::decode_symb($symb); 
   #    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
   #    my $type=($curpage =~ /\.(page|sequence)/);
       my $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $result.='<option value="'.$ctr.'" '.
       ($$symbx{$_} =~ /$curpage$/ ? 'selected="on"' : '').
       '>'.$showtitle.'</option>'."\n";
    $ctr++;
       }
       $result.= '</select>'."<br>\n";
       $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $result.='<input type="hidden" name="page'.$ctr.'" value="'.$$symbx{$_}.'" />'."\n";
    $result.='<input type="hidden" name="title'.$ctr.'" value="'.$showtitle.'" />'."\n";
    $ctr++;
       }
       $result.='<input type="hidden" name="page" />'."\n".
    '<input type="hidden" name="title" />'."\n";
   
       $result.='&nbsp;<b>View Problems Text: </b><input type="radio" name="vProb" value="no" checked /> no '."\n".
    '<input type="radio" name="vProb" value="yes" /> yes '."<br>\n";
   
       $result.='&nbsp;<b>Submission Details: </b>'.
    '<input type="radio" name="lastSub" value="none" /> none'."\n".
    '<input type="radio" name="lastSub" value="datesub" checked /> by dates and submissions'."\n".
    '<input type="radio" name="lastSub" value="all" /> all details'."\n";
   
       $result.='<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
    '<input type="hidden" name="Status"  value="'.$ENV{'form.Status'}.'" />'."\n".
    '<input type="hidden" name="command" value="displayPage" />'."\n".
    '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
    '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
    '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."<br />\n";
   
       $result.='&nbsp;<input type="button" '.
    'onClick="javascript:checkPickOne(this.form);"value="Next->" /><br />'."\n";
   
       $request->print($result);
   
       my $studentTable.='&nbsp;<b>Select a student you wish to grade and then click on the Next button.</b><br>'.
    '<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">'.
    '<td align="right">&nbsp;<b>No.</b></td>'.
    '<td>'.&nameUserString('header').'</td>'.
    '<td align="right">&nbsp;<b>No.</b></td>'.
    '<td>'.&nameUserString('header').'</td></tr>';
    
       my (undef,undef,$fullname) = &getclasslist($getsec,'1');
       my $ptr = 1;
       foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my ($uname,$udom) = split(/:/,$student);
    $studentTable.=($ptr%2 == 1 ? '<tr bgcolor="#ffffe6">' : '</td>');
    $studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
    $studentTable.='<td>&nbsp;<input type="radio" name="student" value="'.$student.'" /> '
       .&nameUserString(undef,$$fullname{$student},$uname,$udom)."\n";
    $studentTable.=($ptr%2 == 0 ? '</td></tr>' : '');
    $ptr++;
       }
       $studentTable.='</td><td>&nbsp;</td><td>&nbsp;' if ($ptr%2 == 0);
       $studentTable.='</td></tr></table></td></tr></table>'."\n";
       $studentTable.='<input type="button" '.
    'onClick="javascript:checkPickOne(this.form);"value="Next->" /></form>'."\n";
   
       $studentTable.=&show_grading_menu_form($symb,$url);
       $request->print($studentTable);
   
       return '';
   }
   
   sub getSymbMap {
       my ($request) = @_;
       my $navmap = Apache::lonnavmaps::navmap->new();
   
       my %symbx = ();
       my @titles = ();
       my $minder = 0;
   
       # Gather every sequence that has problems.
       my @sequences = $navmap->retrieveResources(undef, sub { shift->is_map(); }, 1);
       for my $sequence ($navmap->getById('0.0'), @sequences) {
    if ($navmap->hasResource($sequence, sub { shift->is_problem(); }, 0) ) {
       my $title = $minder.'.'.$sequence->compTitle();
       push @titles, $title; # minder in case two titles are identical
       $symbx{$title} = $sequence->symb();
       $minder++;
    }
       }
   
       $navmap->untieHashes();
       return \@titles,\%symbx;
   }
   
   #
   #--- Displays a page/sequence w/wo problems, w/wo submissions
   sub displayPage {
       my ($request) = shift;
   
       my ($symb,$url) = &get_symb_and_url($request);
       my $cdom      = $ENV{"course.$ENV{'request.course.id'}.domain"};
       my $cnum      = $ENV{"course.$ENV{'request.course.id'}.num"};
       my $getsec    = $ENV{'form.section'} eq '' ? 'all' : $ENV{'form.section'};
       my $pageTitle = $ENV{'form.page'};
       my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
       my ($uname,$udom) = split(/:/,$ENV{'form.student'});
       my $usec=$classlist->{$ENV{'form.student'}}[5];
       if (!&canview($usec)) {
    $request->print('<font color="red">Unable to view requested student.('.$ENV{'form.student'}.')</font>');
    $request->print(&show_grading_menu_form($symb,$url));
    return;
       }
       my $result='<h3><font color="#339933">&nbsp;'.$ENV{'form.title'}.'</font></h3>';
       $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$$fullname{$ENV{'form.student'}},$uname,$udom).
    '</h3>'."\n";
       &sub_page_js($request);
       $request->print($result);
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($ENV{'form.page'});
       my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
   
       my $iterator = $navmap->getIterator($map->map_start(),
    $map->map_finish());
   
       my $studentTable='<form action="/adm/grades" method="post" name="gradePage">'."\n".
    '<input type="hidden" name="command" value="gradeByPage" />'."\n".
    '<input type="hidden" name="fullname" value="'.$$fullname{$ENV{'form.student'}}.'" />'."\n".
    '<input type="hidden" name="student" value="'.$ENV{'form.student'}.'" />'."\n".
    '<input type="hidden" name="page"    value="'.$pageTitle.'" />'."\n".
    '<input type="hidden" name="title"   value="'.$ENV{'form.title'}.'" />'."\n".
    '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
    '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
    '<input type="hidden" name="overRideScore" value="no" />'."\n".
    '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n";
   
       my $checkIcon = '<img src="'.$request->dir_config('lonIconsURL').
    '/check.gif" height="16" border="0" />';
   
       $studentTable.='&nbsp;<b>Note:</b> Problems graded correct by the computer are marked with a '.$checkIcon.
    ' symbol.'."\n".
    '<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">'.
    '<td align="center"><b>&nbsp;Prob.&nbsp;</b></td>'.
    '<td><b>&nbsp;'.($ENV{'form.vProb'} eq 'no' ? 'Title' : 'Problem Text').'/Grade</b></td></tr>';
   
       my ($depth,$question) = (1,1);
       $iterator->next(); # skip the first BEGIN_MAP
       my $curRes = $iterator->next(); # for "current resource"
       while ($depth > 0) {
           if($curRes == $iterator->BEGIN_MAP) { $depth++; }
           if($curRes == $iterator->END_MAP) { $depth--; }
   
           if (ref($curRes) && $curRes->is_problem()) {
       my $parts = $curRes->parts();
               my $title = $curRes->compTitle();
       my $symbx = $curRes->symb();
       $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$question.
    (scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
       $studentTable.='<td valign="top">';
       if ($ENV{'form.vProb'} eq 'yes') {
    $studentTable.=&show_problem($request,$symbx,$uname,$udom,1);
       } else {
    my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$ENV{'request.course.id'});
    $companswer =~ s|<form(.*?)>||g;
    $companswer =~ s|</form>||g;
   # while ($companswer =~ /(<a href\=\"javascript:newWindow.*?Script Vars<\/a>)/s) { #<a href="javascript:newWindow</a>
   #    $companswer =~ s/$1/ /ms;
   #    $request->print('match='.$1."<br>\n");
   # }
   # $companswer =~ s|<table border=\"1\">|<table border=\"0\">|g;
    $studentTable.='&nbsp;<b>'.$title.'</b>&nbsp;<br>&nbsp;<b>Correct answer:</b><br>'.$companswer;
       }
   
       my %record = &Apache::lonnet::restore($symbx,$ENV{'request.course.id'},$udom,$uname);
   
       if ($ENV{'form.lastSub'} eq 'datesub') {
    if ($record{'version'} eq '') {
       $studentTable.='<br />&nbsp;<font color="red">No recorded submission for this problem</font><br />';
    } else {
       my %responseType = ();
       foreach my $partid (@{$parts}) {
    $responseType{$partid} = $curRes->responseType($partid);
       }
       $studentTable.= &displaySubByDates(\$symbx,\%record,$parts,\%responseType,$checkIcon);
    }
       } elsif ($ENV{'form.lastSub'} eq 'all') {
    my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
    $studentTable.=&Apache::loncommon::get_previous_attempt($symbx,$uname,$udom,
    $ENV{'request.course.id'},
    '','.submission');
    
       }
       if (&canmodify($usec)) {
    foreach my $partid (@{$parts}) {
       $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
       $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
       $question++;
    }
       }
       $studentTable.='</td></tr>';
   
    }
           $curRes = $iterator->next();
       }
   
       $navmap->untieHashes();
   
       $studentTable.='</td></tr></table></td></tr></table>'."\n".
    '<input type="button" value="Save" '.
    'onClick="javascript:checkSubmitPage(this.form,'.$question.');" TARGET=_self />'.
    '</form>'."\n";
       $studentTable.=&show_grading_menu_form($symb,$url);
       $request->print($studentTable);
   
       return '';
   }
   
   sub displaySubByDates {
       my ($symbx,$record,$parts,$responseType,$checkIcon) = @_;
       my $studentTable='<table border="0" width="100%"><tr><td bgcolor="#777777">'.
    '<table border="0" width="100%"><tr bgcolor="#e6ffff">'.
    '<td><b>Date/Time</b></td>'.
    '<td><b>Submission</b></td>'.
    '<td><b>Status&nbsp;</b></td></tr>';
       my ($version);
       my %mark;
       $mark{'correct_by_student'} = $checkIcon;
       return '<br />&nbsp;<font color="red">Nothing submitted - no attempts</font><br />' 
    if (!exists($$record{'1:timestamp'}));
       for ($version=1;$version<=$$record{'version'};$version++) {
    my $timestamp = scalar(localtime($$record{$version.':timestamp'}));
    $studentTable.='<tr bgcolor="#ffffff" valign="top"><td>'.$timestamp.'</td>';
    my @versionKeys = split(/\:/,$$record{$version.':keys'});
    my @displaySub = ();
    foreach my $partid (@{$parts}) {
       my @matchKey = grep /^resource\.$partid\..*?\.submission$/,@versionKeys;
   #    next if ($$record{"$version:resource.$partid.solved"} eq '');
       $displaySub[0].=(exists $$record{$version.':'.$matchKey[0]}) ? 
    '<b>Part&nbsp;'.$partid.'&nbsp;'.
    ($$record{"$version:resource.$partid.tries"} eq '' ? 'Trial&nbsp;not&nbsp;counted' :
    'Trial&nbsp;'.$$record{"$version:resource.$partid.tries"}).'</b>&nbsp; '.
    &cleanRecord($$record{$version.':'.$matchKey[0]},$$responseType{$partid},$$symbx).'<br />' : '';
       $displaySub[1].=(exists $$record{"$version:resource.$partid.award"}) ?
    '<b>Part&nbsp;'.$partid.'</b> &nbsp;'.
    lc($$record{"$version:resource.$partid.award"}).' '.
    $mark{$$record{"$version:resource.$partid.solved"}}.'<br />' : '';
       $displaySub[2].=(exists $$record{"$version:resource.$partid.regrader"}) ?
    $$record{"$version:resource.$partid.regrader"}.' (<b>Part:</b> '.$partid.')' : '';
    }
    $displaySub[2].=(exists $$record{"$version:resource.regrader"}) ?
       $$record{"$version:resource.regrader"} : ''; # needed because old essay regrader has not parts info
    $studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1].
       ($displaySub[2] eq '' ? '' : 'Manually graded by '.$displaySub[2]).'&nbsp;</td></tr>';
       }
       $studentTable.='</table></td></tr></table>';
       return $studentTable;
   }
   
   sub updateGradeByPage {
       my ($request) = shift;
   
       my $cdom      = $ENV{"course.$ENV{'request.course.id'}.domain"};
       my $cnum      = $ENV{"course.$ENV{'request.course.id'}.num"};
       my $getsec    = $ENV{'form.section'} eq '' ? 'all' : $ENV{'form.section'};
       my $pageTitle = $ENV{'form.page'};
       my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
       my ($uname,$udom) = split(/:/,$ENV{'form.student'});
       my $usec=$classlist->{$ENV{'form.student'}}[5];
       if (!&canmodify($usec)) {
    $request->print('<font color="red">Unable to modify requested student.('.$ENV{'form.student'}.'</font>');
    $request->print(&show_grading_menu_form($ENV{'form.symb'},$ENV{'form.url'}));
    return;
       }
       my $result='<h3><font color="#339933">&nbsp;'.$ENV{'form.title'}.'</font></h3>';
       $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$ENV{'form.fullname'},$uname,$udom).
    '</h3>'."\n";
   
       $request->print($result);
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $ENV{'form.page'});
       my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
   
       my $iterator = $navmap->getIterator($map->map_start(),
    $map->map_finish());
   
       my $studentTable='<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">'.
    '<td align="center"><b>&nbsp;Prob.&nbsp;</b></td>'.
    '<td><b>&nbsp;Title&nbsp;</b></td>'.
    '<td><b>&nbsp;Previous Score&nbsp;</b></td>'.
    '<td><b>&nbsp;New Score&nbsp;</b></td></tr>';
   
       $iterator->next(); # skip the first BEGIN_MAP
       my $curRes = $iterator->next(); # for "current resource"
       my ($depth,$question,$changeflag)= (1,1,0);
       while ($depth > 0) {
           if($curRes == $iterator->BEGIN_MAP) { $depth++; }
           if($curRes == $iterator->END_MAP) { $depth--; }
   
           if (ref($curRes) && $curRes->is_problem() && !$curRes->randomout) {
       my $parts = $curRes->parts();
               my $title = $curRes->compTitle();
       my $symbx = $curRes->symb();
       $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$question.
    (scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
       $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
   
       my %newrecord=();
       my @displayPts=();
       foreach my $partid (@{$parts}) {
    my $newpts = $ENV{'form.GD_BOX'.$question.'_'.$partid};
    my $oldpts = $ENV{'form.oldpts'.$question.'_'.$partid};
   
    my $wgt = $ENV{'form.WGT'.$question.'_'.$partid} != 0 ? 
       $ENV{'form.WGT'.$question.'_'.$partid} : 1;
    my $partial = $newpts/$wgt;
    my $score;
    if ($partial > 0) {
       $score = 'correct_by_override';
    } elsif ($newpts ne '') { #empty is taken as 0
       $score = 'incorrect_by_override';
    }
    my $dropMenu = $ENV{'form.GD_SEL'.$question.'_'.$partid};
    if ($dropMenu eq 'excused') {
       $partial = '';
       $score = 'excused';
    } elsif ($dropMenu eq 'reset status'
    && $ENV{'form.solved'.$question.'_'.$partid} ne '') { #update only if previous record exists
       $newrecord{'resource.'.$partid.'.tries'} = 0;
       $newrecord{'resource.'.$partid.'.solved'} = '';
       $newrecord{'resource.'.$partid.'.award'} = '';
       $newrecord{'resource.'.$partid.'.awarded'} = 0;
       $newrecord{'resource.'.$partid.'.regrader'} = "$ENV{'user.name'}:$ENV{'user.domain'}";
       $changeflag++;
       $newpts = '';
    }
   
    my $oldstatus = $ENV{'form.solved'.$question.'_'.$partid};
    $displayPts[0].='&nbsp;<b>Part</b> '.$partid.' = '.
       (($oldstatus eq 'excused') ? 'excused' : $oldpts).
       '&nbsp;<br>';
    $displayPts[1].='&nbsp;<b>Part</b> '.$partid.' = '.
        (($score eq 'excused') ? 'excused' : $newpts).
       '&nbsp;<br>';
   
    $question++;
    next if ($dropMenu eq 'reset status' || ($newpts == $oldpts && $score ne 'excused'));
   
    $newrecord{'resource.'.$partid.'.awarded'}  = $partial if $partial ne '';
    $newrecord{'resource.'.$partid.'.solved'}   = $score if $score ne '';
    $newrecord{'resource.'.$partid.'.regrader'} = "$ENV{'user.name'}:$ENV{'user.domain'}"
       if (scalar(keys(%newrecord)) > 0);
   
    $changeflag++;
       }
       if (scalar(keys(%newrecord)) > 0) {
    &Apache::lonnet::cstore(\%newrecord,$symbx,$ENV{'request.course.id'},
    $udom,$uname);
       }
   
       $studentTable.='<td valign="top">'.$displayPts[0].'</td>'.
    '<td valign="top">'.$displayPts[1].'</td>'.
    '</tr>';
   
    }
           $curRes = $iterator->next();
       }
   
       $navmap->untieHashes();
   
       $studentTable.='</td></tr></table></td></tr></table>';
       $studentTable.=&show_grading_menu_form($ENV{'form.symb'},$ENV{'form.url'});
       my $grademsg=($changeflag == 0 ? 'No score was changed or updated.' :
     'The scores were changed for '.
     $changeflag.' problem'.($changeflag == 1 ? '.' : 's.'));
       $request->print($grademsg.$studentTable);
   
       return '';
   }
   
   #-------- end of section for handling grading by page/sequence ---------
   #
   #-------------------------------------------------------------------
   
   #--------------------Scantron Grading-----------------------------------
   #
   #------ start of section for handling grading by page/sequence ---------
   
   sub defaultFormData {
       my ($symb,$url)=@_;
       return '
         <input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
        '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
        '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n".
        '<input type="hidden" name="probTitle" value="'.$ENV{'form.probTitle'}.'" />'."\n";
   }
   
   sub getSequenceDropDown {
       my ($request,$symb)=@_;
       my $result='<select name="selectpage">'."\n";
       my ($titles,$symbx) = &getSymbMap($request);
       my ($curpage)=&Apache::lonnet::decode_symb($symb); 
       my $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $result.='<option value="'.$$symbx{$_}.'" '.
       ($$symbx{$_} =~ /$curpage$/ ? 'selected="on"' : '').
       '>'.$showtitle.'</option>'."\n";
    $ctr++;
       }
       $result.= '</select>';
       return $result;
   }
   
   sub scantron_uploads {
       if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
       my $result= '<select name="scantron_selectfile">';
       opendir(DIR,$Apache::lonnet::perlvar{'lonScansDir'});
       my @files=sort(readdir(DIR));
       foreach my $filename (@files) {
    if ($filename eq '.' or $filename eq '..') { next; }
    $result.="<option>$filename</option>\n";
       }
       closedir(DIR);
       $result.="</select>";
       return $result;
   }
   
   sub scantron_scantab {
       my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
       my $result='<select name="scantron_format">'."\n";
       foreach my $line (<$fh>) {
    my ($name,$descrip)=split(/:/,$line);
    if ($name =~ /^\#/) { next; }
    $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
       }
       $result.='</select>'."\n";
   
       return $result;
   }
   
   sub scantron_selectphase {
       my ($r) = @_;
       my ($symb,$url)=&get_symb_and_url($r);
       if (!$symb) {return '';}
       my $sequence_selector=&getSequenceDropDown($r,$symb);
       my $default_form_data=&defaultFormData($symb,$url);
       my $grading_menu_button=&show_grading_menu_form($symb,$url);
       my $file_selector=&scantron_uploads();
       my $format_selector=&scantron_scantab();
       my $result;
       $result.= <<SCANTRONFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantro_process">
     <input type="hidden" name="command" value="scantron_process" />
     $default_form_data
     <table width="100%" border="0">
       <tr>
         <td bgcolor="#777777">
           <table width="100%" border="0">
             <tr bgcolor="#e6ffff">
               <td>
                 &nbsp;<b>Specify file location and which Folder/Sequence to grade</b>
               </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td>
                  Sequence to grade: $sequence_selector
       </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td>
    Filename of scoring office file: $file_selector
       </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td>
                 Format of data file: $format_selector
       </td>
             </tr>
           </table>
         </td>
       </tr>
     </table>
     <input type="submit" value="Submit" />
   </form>
   $grading_menu_button
   SCANTRONFORM
   
       return $result;
   }
   
   sub get_scantron_config {
       my ($which) = @_;
       my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
       my %config;
       foreach my $line (<$fh>) {
    my ($name,$descrip)=split(/:/,$line);
    if ($name ne $which ) { next; }
    chomp($line);
    my @config=split(/:/,$line);
    $config{'name'}=$config[0];
    $config{'description'}=$config[1];
    $config{'CODElocation'}=$config[2];
    $config{'CODEstart'}=$config[3];
    $config{'CODElength'}=$config[4];
    $config{'IDstart'}=$config[5];
    $config{'IDlength'}=$config[6];
    $config{'Qstart'}=$config[7];
    $config{'Qlength'}=$config[8];
    $config{'Qoff'}=$config[9];
    $config{'Qon'}=$config[10];
    last;
       }
       return %config;
   }
   
   sub username_to_idmap {
       my ($classlist)= @_;
       my %idmap;
       foreach my $student (keys(%$classlist)) {
    $idmap{$classlist->{$student}->[&Apache::loncoursedata::CL_ID]}=
       $student;
       }
       return %idmap;
   }
   
   sub scantron_parse_scanline {
       my ($line,$scantron_config)=@_;
       my %record;
       my $questions=substr($line,$$scantron_config{'Qstart'}-1);
       my $data=substr($line,0,$$scantron_config{'Qstart'}-1);
       if ($$scantron_config{'CODElocation'} ne 0) {
    if ($$scantron_config{'CODElocation'} < 0) {
       $record{'scantron.CODE'}=substr($data,$$scantron_config{'CODEstart'}-1,
       $$scantron_config{'CODElength'});
    } else {
       #FIXME interpret first N questions
    }
       }
       $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
     $$scantron_config{'IDlength'});
       my @alphabet=('A'..'Z');
       my $questnum=0;
       while ($questions) {
    $questnum++;
    my $currentquest=substr($questions,0,$$scantron_config{'Qlength'});
    substr($questions,0,$$scantron_config{'Qlength'})='';
    if (length($currentquest) < $$scantron_config{'Qlength'}) { next; }
    my (@array)=split(/$$scantron_config{'Qon'}/,$currentquest);
    if (scalar(@array) gt 2) {
       #FIXME do something intelligent with double bubbles
       Apache->request->print("<br ><b>Wha!!!</b> <pre>".scalar(@array).
      '-'.$currentquest.'-'.$questnum.'</pre><br />');
    }
    if (length($array[0]) eq $$scantron_config{'Qlength'}) {
       $record{"scantron.$questnum.answer"}='';
    } else {
       $record{"scantron.$questnum.answer"}=$alphabet[length($array[0])];
    }
       }
       $record{'scantron.maxquest'}=$questnum;
       return \%record;
   }
   
   sub scantron_add_delay {
       my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
       Apache->request->print('add_delay_error '.$_[2] );
       push(@$delayqueue,
    {'line' => $scanline, 'emsg' => $errormessage,
     'ecode' => $errorcode }
    );
   }
   
   sub scantron_find_student {
       my ($scantron_record,$idmap)=@_;
       my $scanID=$$scantron_record{'scantron.ID'};
       foreach my $id (keys(%$idmap)) {
    #Apache->request->print('<pre>checking studnet -'.$id.'- againt -'.$scanID.'- </pre>');
    if (lc($id) eq lc($scanID)) {
       #Apache->request->print('success');
       return $$idmap{$id};
    }
       }
       return undef;
   }
   
   sub scantron_filter {
       my ($curres)=@_;
       if (ref($curres) && $curres->is_problem() && !$curres->randomout) {
    return 1;
       }
       return 0;
   }
   
   #FIXME I think I am doing this in the wrong order, I think it would be
   #better to make a several passes analyzing all of the lines in the
   #file for common errors wrong/invalid PID/username duplicated
   #PID/username, missing bubbles, double bubbles, missing/invalid CODE
   #and then get the instructor to fix all of these errors, then grade
   #the corrected one, I'll still need to catch error conditions, but
   #maybe most will taken care even before we start
   sub scantron_process_students {
       my ($r) = @_;
       my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($ENV{'form.selectpage'});
       my ($symb,$url)=&get_symb_and_url($r);
       if (!$symb) {return '';}
       my $default_form_data=&defaultFormData($symb,$url);
   
       my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
       my $scanlines=Apache::File->new($Apache::lonnet::perlvar{'lonScansDir'}."/$ENV{'form.scantron_selectfile'}");
       my @scanlines=<$scanlines>;
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
       my $navmap=Apache::lonnavmaps::navmap->new();
       my $map=$navmap->getResourceByUrl($sequence);
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
   #    $r->print("geto ".scalar(@resources)."<br />");
       my $result= <<SCANTRONFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
     <input type="hidden" name="command" value="scantron_configphase" />
     $default_form_data
   SCANTRONFORM
       $r->print($result);
   
       my @delayqueue;
       my %completedstudents;
       
       my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
              'Scantron Status','Scantron Progress',scalar(@scanlines));
       &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
     'Processing first student');
       my $start=&Time::HiRes::time();
       foreach my $line (@scanlines) {
    $r->print('<pre>line is'.$line.'</pre>');
   
    chomp($line);
    my $scan_record=&scantron_parse_scanline($line,\%scantron_config);
    my ($uname,$udom);
    unless ($uname=&scantron_find_student($scan_record,\%idmap)) {
       &scantron_add_delay(\@delayqueue,$line,
    'Unable to find a student that matches',1);
       next;
    }
    if (exists $completedstudents{$uname}) {
       &scantron_add_delay(\@delayqueue,$line,
    'Student '.$uname.' has multiple sheets',2);
       next;
    }
    $r->print('<pre>doing studnet'.$uname.'</pre>');
    ($uname,$udom)=split(/:/,$uname);
    &Apache::lonnet::delenv('form.counter');
    &Apache::lonnet::appenv(%$scan_record);
   #    &Apache::lonhomework::showhash(%ENV);
   #    $Apache::lonxml::debug=1;
   # &Apache::lonxml::debug("line is $line");
   
       my $i=0;
    foreach my $resource (@resources) {
       $i++;
       my $result=&Apache::lonnet::ssi($resource->src(),
    ('submitted'     =>'scantron',
     'grade_target'  =>'grade',
     'grade_username'=>$uname,
     'grade_domain'  =>$udom,
     'grade_courseid'=>$ENV{'request.course.id'},
     'grade_symb'    =>$resource->symb()));
   #    my %score=&Apache::lonnet::restore($resource->symb(),
   #       $ENV{'request.course.id'},
   #       $udom,$uname);
   #    foreach my $part ($resource->{PARTS}) {
   # if ($score{'resource.'.$part.'.solved'} =~ /^correct/) {
   #    $studentcorrect++;
   #    $totalcorrect++;
   # } else {
   #    $studentincorrect++;
   #    $totalincorrect++;
   # }
   #    }
   #    $r->print('<pre>'.
   #      $resource->symb().'-'.
   #      $resource->src().'-'.'</pre>result is'.$result);
   #    &Apache::lonhomework::showhash(%score);
    #    if ($i eq 3) {last;}
    }
    $completedstudents{$uname}={'line'=>$line};
       } continue {
    &Apache::lonnet::delenv('form.counter');
    &Apache::lonnet::delenv('scantron\.');
    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
    'last student');
    #last;
    #FIXME
    #get iterator for $sequence
    #foreach question 'submit' the students answer to the server
    #   through grade target {
    #   generate data to pass back that includes grade recevied
    #}
       }
       &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
       my $lasttime = &Time::HiRes::time()-$start;
       $r->print("<p>took $lasttime</p>");
   
       #$Apache::lonxml::debug=0;
       foreach my $delay (@delayqueue) {
    #FIXME
    #print out each delayed student with interface to select how
    #  to repair student provided info
    #Expected errors include
    #  1 bad/no stuid/username
    #  2 invalid bubblings
   
       }
       #FIXME
       # if delay queue exists 2 submits one to process delayed students one
       #     to ignore delayed students, possibly saving the delay queue for later
       
       $navmap->untieHashes();
   }
   #-------- end of section for handling grading scantron forms -------
   #
   #-------------------------------------------------------------------
   
   
   #-------------------------- Menu interface -------------------------
   #
   #--- Show a Grading Menu button - Calls the next routine ---
   sub show_grading_menu_form {
       my ($symb,$url)=@_;
       my $result.='<br /><form action="/adm/grades" method="post">'."\n".
    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url" value="'.$url.'" />'."\n".
    '<input type="hidden" name="saveState"  value="'.$ENV{'form.saveState'}.'" />'."\n".
    '<input type="hidden" name="command" value="gradingmenu" />'."\n".
    '<input type="submit" name="submit" value="Grading Menu" />'."\n".
    '</form>'."\n";
       return $result;
   }
   
   # -- Retrieve choices for grading form
   sub savedState {
       my %savedState = ();
       if ($ENV{'form.saveState'}) {
    foreach (split(/:/,$ENV{'form.saveState'})) {
       my ($key,$value) = split(/=/,$_,2);
       $savedState{$key} = $value;
    }
       }
       return \%savedState;
   }
   
   #--- Displays the main menu page -------
   sub gradingmenu {
       my ($request) = @_;
       my ($symb,$url)=&get_symb_and_url($request);
       if (!$symb) {return '';}
       my $probTitle = &Apache::lonnet::gettitle($symb);
   
       $request->print(<<GRADINGMENUJS);
   <script type="text/javascript" language="javascript">
       function checkChoice(formname,val,cmdx) {
    if (val <= 2) {
       var cmd = radioSelection(formname.radioChoice);
       var cmdsave = cmd;
    } else {
       cmd = cmdx;
       cmdsave = 'submission';
    }
    formname.command.value = cmd;
    formname.saveState.value = "saveCmd="+cmdsave+":saveSec="+pullDownSelection(formname.section)+
       ":saveSub="+radioSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
    if (val < 5) formname.submit();
    if (val == 5) {
       if (!checkReceiptNo(formname,'notOK')) { return false;}
       formname.submit();
    }
       }
   
       function checkReceiptNo(formname,nospace) {
    var receiptNo = formname.receipt.value;
    var checkOpt = false;
    if (nospace == "OK" && isNaN(receiptNo)) {checkOpt = true;}
    if (nospace == "notOK" && (isNaN(receiptNo) || receiptNo == "")) {checkOpt = true;}
    if (checkOpt) {
       alert("Please enter a receipt number given by a student in the receipt box.");
       formname.receipt.value = "";
       formname.receipt.focus();
       return false;
    }
    return true;
       }
   </script>
   GRADINGMENUJS
       &commonJSfunctions($request);
       my $result='<h3>&nbsp;<font color="#339933">Manual Grading/View Submission</font></h3>';
       my ($table,undef,$hdgrade) = &showResourceInfo($url,$probTitle);
       $result.=$table;
       my (undef,$sections) = &getclasslist('all','0');
       my $savedState = &savedState();
       my $saveCmd = ($$savedState{'saveCmd'} eq '' ? 'submission' : $$savedState{'saveCmd'});
       my $saveSec = ($$savedState{'saveSec'} eq '' ? 'all' : $$savedState{'saveSec'});
       my $saveSub = ($$savedState{'saveSub'} eq '' ? 'all' : $$savedState{'saveSub'});
       my $saveStatus = ($$savedState{'saveStatus'} eq '' ? 'Active' : $$savedState{'saveStatus'});
   
       $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
    '<input type="hidden" name="symb"        value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url"         value="'.$url.'" />'."\n".
    '<input type="hidden" name="handgrade"   value="'.$hdgrade.'" />'."\n".
    '<input type="hidden" name="probTitle"   value="'.$probTitle.'" />'."\n".
    '<input type="hidden" name="command"     value="" />'."\n".
    '<input type="hidden" name="saveState"   value="" />'."\n".
    '<input type="hidden" name="gradingMenu" value="1" />'."\n".
    '<input type="hidden" name="showgrading" value="yes" />'."\n";
   
       $result.='<table width="100%" border=0><tr><td bgcolor=#777777>'."\n".
    '<table width=100% border=0><tr bgcolor="#e6ffff"><td colspan="2">'."\n".
    '&nbsp;<b>Select a Grading/Viewing Option</b></td></tr>'."\n".
    '<tr bgcolor="#ffffe6" valign="top"><td>'."\n";
   
       $result.='<table width="100%" border=0>';
       $result.='<tr bgcolor="#ffffe6" valign="top"><td>'."\n".
    '&nbsp;Select Section: <select name="section">'."\n";
       if (ref($sections)) {
    foreach (sort (@$sections)) {$result.='<option value="'.$_.'" '.
    ($saveSec eq $_ ? 'selected="on"' : '').'>'.$_.'</option>'."\n";}
       }
       $result.= '<option value="all" '.($saveSec eq 'all' ? 'selected="on"' : ''). '>all</select> &nbsp; ';
   
       $result.='Student Status:</b>'.&Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,undef);
   
       if (ref($sections)) {
    $result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />' 
       if (grep /no/,@$sections);
       }
       $result.='</td></tr>';
   
       $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
    '<input type="radio" name="radioChoice" value="submission" '.
    ($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>Current Resource:</b> For one or more students'.
    '<br />&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;-->For students with '.
    '<input type="radio" name="submitonly" value="yes" '.
    ($saveSub eq 'yes' ? 'checked' : '').' /> submissions or '.
    '<input type="radio" name="submitonly" value="all" '.
    ($saveSub eq 'all' ? 'checked' : '').' /> for all</td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
    '<input type="radio" name="radioChoice" value="viewgrades" '.
    ($saveCmd eq 'viewgrades' ? 'checked' : '').'> '.
    '<b>Current Resource:</b> For all students in selected section or course</td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6" valign="top"><td>'.
    '<input type="radio" name="radioChoice" value="pickStudentPage" '.
    ($saveCmd eq 'pickStudentPage' ? 'checked' : '').'> '.
    'The <b>complete</b> set/page/sequence: For one student</td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6"><td><br />'.
    '<input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="Next->" />'.
    '</td></tr></table>'."\n";
   
       $result.='</td><td valign="top">';
   
       $result.='<table width="100%" border=0>';
       $result.='<tr bgcolor="#ffffe6"><td>'.
    '<input type="button" onClick="javascript:checkChoice(this.form,\'3\',\'csvform\');" value="Upload" />'.
    ' scores from file </td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
    '<input type="button" onClick="javascript:checkChoice(this.form,\'4\',\'scantron_selectphase\');'.
    '" value="Grade" /> scantron forms</td></tr>'."\n";
   
       if ((&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) && ($symb)) {
    $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
       '<input type="button" onClick="javascript:checkChoice(this.form,\'5\',\'verify\');" value="Verify" />'.
       ' submission Receipt no: '.unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).
       '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')">'.
       '</td></tr>'."\n";
       } 
   
       $result.='</form></td></tr></table>'."\n".
    '</td></tr></table>'."\n".
    '</td></tr></table>'."\n";
       return $result;
 }  }
   
 sub handler {  sub handler {
   my $request=$_[0];      my $request=$_[0];
   
   if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}      undef(%perm);
         if ($ENV{'browser.mathml'}) {
   if ($ENV{'browser.mathml'}) {   &Apache::loncommon::content_type($request,'text/xml');
     $request->content_type('text/xml');      } else {
   } else {   &Apache::loncommon::content_type($request,'text/html');
     $request->content_type('text/html');      }
   }      $request->send_http_header;
   $request->send_http_header;      return '' if $request->header_only;
   return OK if $request->header_only;      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
   &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});      my $url=$ENV{'form.url'};
   my $url=$ENV{'form.url'};      my $symb=$ENV{'form.symb'};
   my $symb=$ENV{'form.symb'};      my $command=$ENV{'form.command'};
   my $command=$ENV{'form.command'};      if (!$url) {
   if (!$url) {   my ($temp1,$temp2);
     my ($temp1,$temp2);   ($temp1,$temp2,$ENV{'form.url'})=&Apache::lonnet::decode_symb($symb);
     ($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);   $url = $ENV{'form.url'};
     $url = $ENV{'form.url'};      }
   }      &send_header($request);
   &send_header($request);      if ($url eq '' && $symb eq '') {
   if ($url eq '' && $symb eq '') {   if ($ENV{'user.adv'}) {
      if ($ENV{'user.adv'}) {      if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&
          if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&   ($ENV{'form.codethree'})) {
              ($ENV{'form.codethree'})) {   my $token=$ENV{'form.codeone'}.'*'.$ENV{'form.codetwo'}.'*'.
              my $token=$ENV{'form.codeone'}.'*'.$ENV{'form.codetwo'}.'*'.      $ENV{'form.codethree'};
         $ENV{'form.codethree'};   my ($tsymb,$tuname,$tudom,$tcrsid)=
              my ($tsymb,$tuname,$tudom,$tcrsid)=      &Apache::lonnet::checkin($token);
  &Apache::lonnet::checkin($token);   if ($tsymb) {
              if ($tsymb) {      my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
                 my ($map,$id,$url)=split(/\_\_\_/,$tsymb);      if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
                 if (&Apache::lonnet::allowed('mgr',$tcrsid)) {   $request->print(&Apache::lonnet::ssi_body('/res/'.$url,
                    $request->print(    ('grade_username' => $tuname,
                      &Apache::lonnet::ssi('/res/'.$url,     'grade_domain' => $tudom,
                         ('grade_username' => $tuname,     'grade_courseid' => $tcrsid,
                          'grade_domain' => $tudom,     'grade_symb' => $tsymb)));
                          'grade_courseid' => $tcrsid,      } else {
                          'grade_symb' => $tsymb)));   $request->print('<h3>Not authorized: '.$token.'</h3>');
                 } else {      }
                    $request->print('<h1>Not authorized: '.$token.'</h1>');   } else {
                 }                 $request->print('<h3>Not a valid DocID: '.$token.'</h3>');
    }
     } else {      } else {
                 $request->print('<h1>Not a valid DocID: '.$token.'</h1>');   $request->print(&Apache::lonxml::tokeninputfield());
             }      }
  } else {   }
              $request->print(&Apache::lonxml::tokeninputfield());  
          }  
      }  
   } else {  
     $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});  
     if ($command eq 'submission') {  
       $request->print(&listStudents($request)) if ($ENV{'form.student'} eq '');  
       $request->print(&submission($request)) if ($ENV{'form.student'} ne '');  
     } elsif ($command eq 'viewgrades') {  
       $request->print(&viewgrades($request));  
     } elsif ($command eq 'editgrades') {  
       $request->print(&editgrades($request));  
     } else {      } else {
       $request->print("Unknown action:$command:");   if (!($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}))) {
       if ($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.'/'.$ENV{'request.course.sec'})) {
    $perm{'vgr_section'}=$ENV{'request.course.sec'};
       } else {
    delete($perm{'vgr'});
       }
    }
    if (!($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'}))) {
       if ($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'}.'/'.$ENV{'request.course.sec'})) {
    $perm{'mgr_section'}=$ENV{'request.course.sec'};
       } else {
    delete($perm{'mgr'});
       }
    }
   
    if ($command eq 'submission' && $perm{'vgr'}) {
       ($ENV{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
    } elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
       &pickStudentPage($request);
    } elsif ($command eq 'displayPage' && $perm{'vgr'}) {
       &displayPage($request);
    } elsif ($command eq 'gradeByPage' && $perm{'mgr'}) {
       &updateGradeByPage($request);
    } elsif ($command eq 'processGroup' && $perm{'vgr'}) {
       &processGroup($request);
    } elsif ($command eq 'gradingmenu' && $perm{'vgr'}) {
       $request->print(&gradingmenu($request));
    } elsif ($command eq 'viewgrades' && $perm{'vgr'}) {
       $request->print(&viewgrades($request));
    } elsif ($command eq 'handgrade' && $perm{'mgr'}) {
       $request->print(&processHandGrade($request));
    } elsif ($command eq 'editgrades' && $perm{'mgr'}) {
       $request->print(&editgrades($request));
    } elsif ($command eq 'verify' && $perm{'vgr'}) {
       $request->print(&verifyreceipt($request));
    } elsif ($command eq 'csvform' && $perm{'mgr'}) {
       $request->print(&upcsvScores_form($request));
    } elsif ($command eq 'csvupload' && $perm{'mgr'}) {
       $request->print(&csvupload($request));
    } elsif ($command eq 'csvuploadmap' && $perm{'mgr'} ) {
       $request->print(&csvuploadmap($request));
    } elsif ($command eq 'csvuploadassign' && $perm{'mgr'}) {
       if ($ENV{'form.associate'} ne 'Reverse Association') {
    $request->print(&csvuploadassign($request));
       } else {
    if ( $ENV{'form.upfile_associate'} ne 'reverse' ) {
       $ENV{'form.upfile_associate'} = 'reverse';
    } else {
       $ENV{'form.upfile_associate'} = 'forward';
    }
    $request->print(&csvuploadmap($request));
       }
    } elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
       $request->print(&scantron_selectphase($request));
    } elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
       $request->print(&scantron_process_students($request));
    } elsif ($command) {
       $request->print("Access Denied");
    }
     }      }
   }      &send_footer($request);
   &send_footer($request);      return '';
   return OK;  }
   
   sub send_header {
       my ($request)= @_;
       $request->print(&Apache::lontexconvert::header());
   #  $request->print("
   #<script>
   #remotewindow=open('','homeworkremote');
   #remotewindow.close();
   #</script>"); 
       $request->print(&Apache::loncommon::bodytag('Grading'));
   }
   
   sub send_footer {
       my ($request)= @_;
       $request->print('</body>');
       $request->print(&Apache::lontexconvert::footer());
 }  }
   
 1;  1;

Removed from v.1.19  
changed lines
  Added in v.1.141


FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.