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Diff for /loncom/homework/grades.pm between versions 1.9 and 1.44

version 1.9, 2001/07/26 15:50:25 version 1.44, 2002/08/02 21:10:03
Line 1 Line 1
   # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler  # The LON-CAPA Grading handler
   #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
 # 2/9,2/13 Guy Albertelli  # 2/9,2/13 Guy Albertelli
 # 6/8 Gerd Kortemeyer  # 6/8 Gerd Kortemeyer
   # 7/26 H.K. Ng
   # 8/20 Gerd Kortemeyer
   # Year 2002
   # June-August H.K. Ng
   #
   
 package Apache::grades;  package Apache::grades;
 use strict;  use strict;
Line 9  use Apache::lonxml; Line 40  use Apache::lonxml;
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::loncommon;  use Apache::loncommon;
 use Apache::lonhomework;  use Apache::lonhomework;
   use Apache::lonmsg qw(:user_normal_msg);
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   
 sub moreinfo {  # ----- These first few routines are general use routines.-----
   my ($request,$reason) = @_;  #
   $request->print("Unable to process request: $reason");  # --- Retrieve the parts that matches stores_\d+ from the metadata file.---
   if ( $Apache::grades::viewgrades eq 'F' ) {  sub getpartlist {
     $request->print('<form action="/adm/grades" method="post">'."\n");      my ($url) = @_;
     $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'"></input>'."\n");      my @parts =();
     $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'"></input>'."\n");      my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
     $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'"></input>'."<br />\n");      foreach my $key (@metakeys) {
     $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'"></input>'."<br />\n");   if ( $key =~ m/stores_([0-9]+)_.*/) {
     $request->print('<input type="submit" name="submit" value="ReSubmit"></input>'."<br />\n");      push(@parts,$key);
     $request->print('</form>');   }
   }      }
   return '';      return @parts;
 }  }
   
   # --- 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);
   }
   
 #FIXME - needs to handle multiple matches  # --- Retrieve the fullname for a user. Return lastname, first middle ---
 sub finduser {  # --- Generation is attached next to the lastname if it exists. ---
   my ($name) = @_;  sub get_fullname {
   my $domain = '';      my ($uname,$udom) = @_;
       my %name=&Apache::lonnet::get('environment', ['lastname','generation',
     'firstname','middlename'],$udom,$uname);
       my $fullname;
       my ($tmp) = keys(%name);
       if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
    $fullname=$name{'lastname'}.$name{'generation'};
    if ($fullname =~ /[^\s]+/) { $fullname.=', '; }
    $fullname.=$name{'firstname'}.' '.$name{'middlename'};
       }
       return $fullname;
   }
   
   if ( $Apache::grades::viewgrades eq 'F' ) {  #--- Get the partlist and the response type for a given problem. ---
     #get classlist  #--- Indicate if a response type is coded handgraded or not. ---
     my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});  sub response_type {
     my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};      my ($url) = shift;
     #print "Found $cdom:$cnum:$chome<br />";      my $allkeys = &Apache::lonnet::metadata($url,'keys');
     my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');      my %seen = ();
     foreach my $student ( sort(@{ $classlist{'allids'} }) ) {      my (@partlist,%handgrade);
       my ($posname,$posdomain) = split(/:/,$student);      foreach (split(/,/,&Apache::lonnet::metadata($url,'packages'))) {
       if ($posname =~ $name) { $name=$posname; $domain=$posdomain; last; }   if (/^\w+response_\d+.*/) {
     }      my ($responsetype,$part) = split(/_/,$_,2);
     return ($name,$domain);      my ($partid,$respid) = split(/_/,$part);
   } else {      $handgrade{$part} = $responsetype.':'.($allkeys =~ /parameter_$part\_handgrade/ ? 'yes' : 'no');
     return ($ENV{'user.name'},$ENV{'user.domain'});      next if ($seen{$partid} > 0);
   }      $seen{$partid}++;
       push @partlist,$partid;
    }
       }
       return \@partlist,\%handgrade;
   }
   
   #--- Prints a message on screen if a user did something wrong
   #--- Operator error ---
   sub userError {
       my ($request, $reason, $step) = @_;
       $request->print('<h3><font color="red">LON-CAPA User Error</font></h3><br />'."\n");
       $request->print('<b>Reason: </b>'.$reason.'<br /><br />'."\n");
       $request->print('<b>Step: </b>'.($step ne '' ? $step : 'Use your browser back button to correct')
       .'<br /><br />'."\n");
       return '';
 }  }
   
   #--- 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 ($getsec,$hideexpired) = @_;
   my $classlist=&Apache::lonnet::reply("dump:$coursedomain:$coursenum:classlist",$coursehome);      my $now = time;
   my %classlist=();      my %classlist=&Apache::lonnet::dump('classlist',
   my $now = time;   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
   foreach my $record (split /&/, $classlist) {   $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
     my ($name,$value)=split(/=/,&Apache::lonnet::unescape($record));      # codes to check for fields in the classlist
     my ($end,$start)=split(/:/,$value);      # should contain end:start:id:section:fullname
     # still a student?      for (keys %classlist) {
     if (($hideexpired) && ($end) && ($end < $now)) {   my (@fields) = split(/:/,$classlist{$_});
       print "Skipping:$name:$end:$now<br />\n";   %classlist   = &reformat_classlist(\%classlist) if (scalar(@fields) <= 2);
       next;   last;
     }      }
     push( @{ $classlist{'allids'} }, $name);   
   }  
   return (%classlist);  
 }  
   
 sub getpartlist {      my (@holdsec,@sections,%allids,%stusec,%fullname);
   my ($url) = @_;      foreach (keys(%classlist)) {
   my @parts =();   my ($end,$start,$id,$section,$fullname)=split(/:/,$classlist{$_});
   my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));   # still a student?
   foreach my $key (@metakeys) {   if (($hideexpired) && ($end) && ($end < $now)) {
     if ( $key =~ m/stores_([0-9]+)_.*/ ) {      next;
       push(@parts,$key);   }
    $section = ($section ne '' ? $section : 'no');
    push @holdsec,$section;
    if ($getsec eq 'all' || $getsec eq $section) {
       push (@{ $classlist{$getsec} }, $_);
       $allids{$_}  =$id;
       $stusec{$_}  =$section;
       $fullname{$_}=$fullname;
    }
     }      }
   }      my %seen = ();
   return @parts;      foreach my $item (@holdsec) {
    push (@sections, $item) unless $seen{$item}++;
       }
       return (\%classlist,\@sections,\%allids,\%stusec,\%fullname);
 }  }
   
 sub viewstudentgrade {  # add id, section and fullname to the classlist.db
   my ($url,$symb,$courseid,$student,@parts) = @_;  # done to maintain backward compatibility with older versions
   my $result ='';  sub reformat_classlist {
       my ($classlist) = shift;
       foreach (sort keys(%$classlist)) {
    my ($unam,$udom) = split(/:/);
    my $section      = &Apache::lonnet::usection($udom,$unam,$ENV{'request.course.id'});
    my $fullname     = &get_fullname ($unam,$udom);
    my %userid       = &Apache::lonnet::idrget($udom,($unam));
    $$classlist{$_}  = $$classlist{$_}.':'.$userid{$unam}.':'.$section.':'.$fullname;
       }
       my $putresult = &Apache::lonnet::put
    ('classlist',\%$classlist,
    $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
    $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
   
   my ($stuname,$domain) = split(/:/,$student);      return %$classlist;
   }
   
   my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);  #find user domain
   sub finduser {
       my ($name) = @_;
       my $domain = '';
       if ( $Apache::grades::viewgrades eq 'F' ) {
    my %classlist=&Apache::lonnet::dump('classlist',
       $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
       $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
    my (@fields) = grep /^$name:/, keys %classlist;
    ($name, $domain) = split(/:/,$fields[0]);
    return ($name,$domain);
       } else {
    return ($ENV{'user.name'},$ENV{'user.domain'});
       }
   }
   
   $result.="<tr><td>$stuname</td><td>$domain</td>\n";  #--- Prompts a user to enter a username.
   foreach my $part (@parts) {  sub moreinfo {
     my ($temp,$part,$type)=split(/_/,$part);      my ($request,$reason) = @_;
     #print "resource.$part.$type = ".$record{"resource.$part.$type"}." <br />\n";      $request->print("Unable to process request: $reason");
     if ($type eq 'awarded') {      if ( $Apache::grades::viewgrades eq 'F' ) {
       my $score=$record{"resource.$part.$type"};   $request->print('<form action="/adm/grades" method="post">'."\n");
       $result.="<td><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n";   if ($ENV{'form.url'}) {
     } elsif ($type eq 'tries') {      $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
       my $score=$record{"resource.$part.$type"};   }
       $result.="<td><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n"   if ($ENV{'form.symb'}) {
     } elsif ($type eq 'solved') {      $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
       my $score=$record{"resource.$part.$type"};   }
       $result.="<td><select name=\"GRADE.$student.$part.$type\">\n";   $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");
       if ($score =~ /^correct/) {   $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'" />'."<br />\n");
  $result.="<option selected=\"on\">correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";   $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'" />'."<br />\n");
       } elsif ($score =~ /^incorrect/) {   $request->print('<input type="submit" name="submit" value="ReSubmit" />'."<br />\n");
  $result.="<option>correct</option>\n<option selected=\"on\">incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";   $request->print('</form>');
       } elsif ($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";  
     }      }
   }      return '';
   $result.='</tr>';  
   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,$foo)    = split(/_/,$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.$type"};  
     if ($type eq 'solved') {  #------------------ End of general use routines --------------------
       my $update=0;  #-------------------------------------------------------------------
       if ($newscore eq 'nothing' ) {  
  if ($oldscore ne '') {  #------------------------------------ Receipt Verification Routines
   $update=1;  #--- Check whether a receipt number is valid.---
   $newscore = '';  sub verifyreceipt {
  }      my $request  = shift;
       } elsif ($oldscore !~ m/^$newscore/) {  
  $update=1;      my $courseid = $ENV{'request.course.id'};
  $result.="Updating $stuname to $newscore<br />\n";      my $receipt  = unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.
  if ($newscore eq 'correct') { $newscore = 'correct_by_override'; }   $ENV{'form.receipt'};
  if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }      $receipt     =~ s/[^\-\d]//g;
  if ($newscore eq 'excused') { $newscore = 'excused'; }      my $url      = $ENV{'form.url'};
  if ($newscore eq 'ungraded') { $newscore = 'ungraded_attempted'; }      my $symb     = $ENV{'form.symb'};
       } else {      unless ($symb) {
  #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";   $symb    = &Apache::lonnet::symbread($url);
       }      }
       if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }  
       my $jscript='<script type="text/javascript" language="javascript">'."\n".
    '    function viewOneStudent(user,domain) {'."\n".
    ' document.onestudent.student.value = user;'."\n".
    ' document.onestudent.userdom.value = domain;'."\n".
    ' document.onestudent.submit();'."\n".
    '    }'."\n".
    '</script>'."\n";
       $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
    '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
    '<input type="hidden" name="command" value="submission" />'."\n".
    '<input type="hidden" name="student" value="" />'."\n".
    '<input type="hidden" name="userdom" value="" />'."\n".
    '</form>'."\n";
   
       my $title.='<h2><font color="#339933">Verifying Submission Receipt '.
    $receipt.'</h2></font>'."\n".
    '<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font><br><br>'."\n";
   
       my ($string,$contents,$matches) = ('','',0);
       my ($classlist,$seclist,$ids,$stusec,$fullname) = &getclasslist('all','0');
       
       foreach (sort {$$fullname{$a} cmp $$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 = $title.'No match found for the above receipt.';
     } else {      } else {
       if ($oldscore ne $newscore) {   $string = $jscript.$title.
  $newrecord{"resource.$part.$type"}=$newscore;      'The above receipt matches the following student'.
  $result.="Updating $student"."'s status for $part.$type to $newscore<br />\n";      ($matches <= 1 ? '.' : 's.')."\n".
       } else {      '<table border="0"><tr><td bgcolor="#777777">'."\n".
  #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\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 $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 $result='<h2><font color="#339933">&nbsp;'.
    'View Submissions for a Student or a Group of Students</font></h2>';
       $result.='<table border="0">';
       $result.='<tr><td colspan=3><font size=+1>'.
    '<b>Resource: </b>'.$ENV{'form.url'}.'</font></td></tr>';
       my ($partlist,$handgrade) = &response_type($ENV{'form.url'});
       for (sort keys(%$handgrade)) {
    my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
    $ENV{'form.handgrade'} = 'yes' if ($handgrade eq 'yes');
    $result.='<tr><td><b>Part </b>'.(split(/_/))[0].'</td>'.
       '<td><b>Type: </b>'.$responsetype.'</td>'.
       '<td><b>Handgrade: </b>'.$handgrade.'</font></td></tr>';
       }
       $result.='</table>';
       $request->print($result);
   
       $request->print(<<ENDTABLEST);
   <form action="/adm/grades" method="post">
   &nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" checked> no 
   <input type="radio" name="vProb" value="yes"> yes <br />
   &nbsp;<b>Submissions: </b>
   <input type="radio" name="lastSub" value="hdgrade" checked /> handgrade only
   <input type="radio" name="lastSub" value="lastonly" /> last sub only
   <input type="radio" name="lastSub" value="last" /> last sub & parts info
   <input type="radio" name="lastSub" value="all" /> all details
   <input type="hidden" name="section" value="$getsec" />
   <input type="hidden" name="submitonly" value="$submitonly" />
   <input type="hidden" name="response" value="$ENV{'form.response'}" />
   <input type="hidden" name="handgrade" value="$ENV{'form.handgrade'}" /><br />
   <input type="hidden" name="showgrading" value="$ENV{'form.showgrading'}" /><br />
   <input type="submit" name="submit" value="View/Grade" />
   ENDTABLEST
       if ($ENV{'form.url'}) {
    $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
       }
       if ($ENV{'form.symb'}) {
    $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
       }
       $request->print('<input type="hidden" name="command" value="processGroup" />'."\n");
   
       my ($classlist,$seclist,$ids,$stusec,$fullname) = &getclasslist($getsec,'0');
       
       $result='<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">'.
    '<td><b>&nbsp;Select&nbsp;</b></td><td><b>&nbsp;Fullname&nbsp;</b></td>'.
    '<td><b>&nbsp;Username&nbsp;</b></td><td><b>&nbsp;Domain&nbsp;</b></td>';
       foreach (sort(@$partlist)) {
    $result.='<td><b>&nbsp;Part '.(split(/_/))[0].' Status&nbsp;</b></td>';
       }
       $request->print($result.'</tr>'."\n");
   
       foreach my $student (sort {$$fullname{$a} cmp $$fullname{$b} } keys %$fullname) {
    my ($uname,$udom) = split(/:/,$student);
    my (%status) = &student_gradeStatus($ENV{'form.url'},
       $ENV{'form.symb'},$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 = '';
    $request->print('<input type="hidden" name="'.
    $student.':submitted_by" value="'.
    $status{'resource.'.$partid.'.submitted_by'}.'" />');
       }
    }
    next if ($statusflg eq '' && $submitonly eq 'yes');
   
    if ( $Apache::grades::viewgrades eq 'F' ) {
       $result='<tr bgcolor="#ffffe6">'.
    '<td align="center"><input type=checkbox name="stuinfo" value="'.
    $student.':'.$$fullname{$student}.'"></td>'."\n".
    '<td>&nbsp;'.$$fullname{$student}.'&nbsp;</td>'."\n".
    '<td>&nbsp;'.$uname.'&nbsp;</td>'."\n".
    '<td align="middle">&nbsp;'.$udom.'&nbsp;</td>'."\n";
       
       foreach (sort keys(%status)) {
    next if (/^resource.*?submitted_by$/);
    $result.='<td align="middle">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
       }
       $request->print($result.'</tr>'."\n");
    }
       }
       $request->print('</table></td></tr></table>');
       $request->print('<input type="submit" name="submit" value="View/Grade" /><form />');
       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 $total      = scalar(@stuchecked)-1;
       if ($stuchecked[0] eq '') {
    &userError($request,'No student was selected for viewing/grading.');
    return;
       }
       foreach (@stuchecked) {
    my ($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(radioButton,formtextbox,formsel,scores,weight) {
        var pts = formtextbox.value;
        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) {
         formtextbox.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) {
              formtextbox.value = "";
              return;
          }
       }
   
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
    if (pts == i) {
      radioButton[i].checked=true;
    }
     }      }
       updateSelect(formsel);
       scores.value = "0";
   }    }
   if ( scalar(keys(%newrecord)) > 0 ) {  
     $newrecord{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";    function writeBox(formrad,formsel,pts,scores) {
     &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);      formrad.value = pts;
     $result.="Stored away ".scalar(keys(%newrecord))." elements.<br />\n";      scores.value = "0";
       updateSelect(formsel,pts);
       return;
     }
   
     function clearRadBox(radioButton,formbox,formsel,scores) {
       for (var i=0; i<formsel.length; i++) {
    if (formsel[i].selected) {
       var selectx=i;
    }
       }
       if (selectx == scores.value) { return };
       formbox.value = "";
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
       }
       scores.value = selectx;
     }
   
     function updateSelect(formsel) {
       formsel[0].selected = true;
       return;
     }
   
   //===================== Show list of keywords ====================
     function keywords(keyform) {
       var keywds = keyform.value;
       var nret = prompt("Keywords list, separated by a space. Add/delete to list if desired.",keywds);
       if (nret==null) return;
       keyform.value = nret;
   
       document.SCORE.refresh.value = "on";
       if (document.SCORE.keywords.value != "") {
    document.SCORE.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;
     }
   
   //===================== 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("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;
       var curlist = document.SCORE.keywords.value;
       document.SCORE.keywords.value = curlist+" "+nret;
       document.SCORE.refresh.value = "on";
       if (document.SCORE.keywords.value != "") {
    document.SCORE.submit();
       }
       return;
     }
   
   //====================== Script for composing message ==============
     function msgCenter(msgform,usrctr,fullname) {
       var Nmsg  = msgform.savemsgN.value;
       savedMsgHeader(Nmsg,usrctr,fullname);
       var subject = msgform.msgsub.value;
       var rtrchk  = eval("document.SCORE.includemsg"+usrctr);
       var msgchk = rtrchk.value;
       re = /msgsub/;
       var shwsel = "";
       if (re.test(msgchk)) { shwsel = "checked" }
       displaySubject(subject,shwsel);
       for (var i=1; i<=Nmsg; i++) {
    var testpt = "savemsg"+i+",";
    re = /testpt/;
    shwsel = "";
    if (re.test(msgchk)) { shwsel = "checked" }
    var message = eval("document.SCORE.savemsg"+i+".value");
    displaySavedMsg(i,message,shwsel);
       }
       newmsg = eval("document.SCORE.newmsg"+usrctr+".value");
       shwsel = "";
       re = /newmsg/;
       if (re.test(msgchk)) { shwsel = "checked" }
       newMsg(newmsg,shwsel);
       msgTail(); 
       return;
   }    }
   return $result;  
     function savedMsgHeader(Nmsg,usrctr,fullname) {
       var height = 30*Nmsg+250;
       var scrollbar = "no";
       if (height > 600) {
    height = 600;
    scrollbar = "yes";
       }
   /*    if (window.pWin)
    window.pWin.close(); */
       pWin = window.open('', 'MessageCenter', 'toolbar=no,location=no,scrollbars='+scrollbar+',screenx=70,screeny=75,width=600,height='+height);
       pWin.document.write("<html><head>");
       pWin.document.write("<title>Message Central</title>");
   
       pWin.document.write("<script language=javascript>");
       pWin.document.write("function checkInput() {");
       pWin.document.write("  opener.document.SCORE.msgsub.value = document.msgcenter.msgsub.value;");
       pWin.document.write("  var nmsg   = opener.document.SCORE.savemsgN.value;");
       pWin.document.write("  var usrctr = document.msgcenter.usrctr.value;");
       pWin.document.write("  var newval = eval(\\"opener.document.SCORE.newmsg\\"+usrctr);");
       pWin.document.write("  newval.value = document.msgcenter.newmsg.value;");
   
       pWin.document.write("  var msgchk = \\"\\";");
       pWin.document.write("  if (document.msgcenter.subchk.checked) {");
       pWin.document.write("     msgchk = \\"msgsub,\\";");
       pWin.document.write("  }");
       pWin.document.write(   "for (var i=1; i<=nmsg; i++) {");
       pWin.document.write("      var opnmsg = eval(\\"opener.document.SCORE.savemsg\\"+i);");
       pWin.document.write("      var frmmsg = eval(\\"document.msgcenter.msg\\"+i);");
       pWin.document.write("      opnmsg.value = frmmsg.value;");
       pWin.document.write("      var chkbox = eval(\\"document.msgcenter.msgn\\"+i);");
       pWin.document.write("      if (chkbox.checked) {");
       pWin.document.write("         msgchk += \\"savemsg\\"+i+\\",\\";");
       pWin.document.write("      }");
       pWin.document.write("  }");
       pWin.document.write("  if (document.msgcenter.newmsgchk.checked) {");
       pWin.document.write("     msgchk += \\"newmsg\\"+usrctr;");
       pWin.document.write("  }");
       pWin.document.write("  var includemsg = eval(\\"opener.document.SCORE.includemsg\\"+usrctr);");
       pWin.document.write("  includemsg.value = msgchk;");
   
       pWin.document.write("  self.close()");
   
       pWin.document.write("}");
   
       pWin.document.write("<");
       pWin.document.write("/script>");
   
       pWin.document.write("</head><body bgcolor=white>");
   
       pWin.document.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
       pWin.document.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
       pWin.document.write("<font color=\\"green\\" size=+1>&nbsp;Compose Message for \"+fullname+\"</font><br><br>");
   
       pWin.document.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
       pWin.document.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
       pWin.document.write("<td><b>Type</b></td><td><b>Include</b></td><td><b>Message</td></tr>");
   }
       function displaySubject(msg,shwsel) {
       pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");
       pWin.document.write("<td>Subject</td>");
       pWin.document.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pWin.document.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+" \\"size=\\"60\\" maxlength=\\"80\\"></td></tr>");
   }
   
   function displaySavedMsg(ctr,msg,shwsel) {
       pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");
       pWin.document.write("<td align=\\"center\\">"+ctr+"</td>");
       pWin.document.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pWin.document.write("<td><input name=\\"msg"+ctr+"\\" type=\\"text\\" value=\\""+msg+" \\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");
   }
   
     function newMsg(newmsg,shwsel) {
       pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");
       pWin.document.write("<td align=\\"center\\">New</td>");
       pWin.document.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pWin.document.write("<td><input name=\\"newmsg\\" type=\\"text\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" value=\\""+newmsg+" \\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");
 }  }
   
     function msgTail() {
       pWin.document.write("</table>");
       pWin.document.write("</td></tr></table>&nbsp;");
       pWin.document.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
       pWin.document.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
       pWin.document.write("</form>");
       pWin.document.write("</body></html>");
   }
   
   //====================== 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() {
       hwdWin = window.open('', 'KeywordHighlightCentral', 'toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx=100,screeny=75');
       hwdWin.document.write("<html><head>");
       hwdWin.document.write("<title>Highlight Central</title>");
   
       hwdWin.document.write("<script language=javascript>");
       hwdWin.document.write("function updateChoice(flag) {");
       hwdWin.document.write("  opener.document.SCORE.kwclr.value = radioSelection(document.hlCenter.kwdclr);");
       hwdWin.document.write("  opener.document.SCORE.kwsize.value = radioSelection(document.hlCenter.kwdsize);");
       hwdWin.document.write("  opener.document.SCORE.kwstyle.value = radioSelection(document.hlCenter.kwdstyle);");
       hwdWin.document.write("  opener.document.SCORE.refresh.value = \\"on\\";");
       hwdWin.document.write("  if (opener.document.SCORE.keywords.value!=\\"\\"){");
       hwdWin.document.write("     opener.document.SCORE.submit();");
       hwdWin.document.write("  }");
       hwdWin.document.write("  self.close()");
       hwdWin.document.write("}");
   
       hwdWin.document.write("function radioSelection(radioButton) {");
       hwdWin.document.write("    var selection=null;");
       hwdWin.document.write("    for (var i=0; i<radioButton.length; i++) {");
       hwdWin.document.write("        if (radioButton[i].checked) {");
       hwdWin.document.write("            selection=radioButton[i].value;");
       hwdWin.document.write("            return selection;");
       hwdWin.document.write("        }");
       hwdWin.document.write("    }");
       hwdWin.document.write("}");
   
       hwdWin.document.write("<");
       hwdWin.document.write("/script>");
   
       hwdWin.document.write("</head><body bgcolor=white>");
   
       hwdWin.document.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
       hwdWin.document.write("<font color=\\"green\\" size=+1>&nbsp;Keyword Highlight Options</font><br><br>");
   
       hwdWin.document.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
       hwdWin.document.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
       hwdWin.document.write("<td><b>Text Color</b></td><td><b>Font Size</b></td><td><b>Font Style</td></tr>");
     }
   
     function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) { 
       hwdWin.document.write("<tr bgcolor=\\"#ffffdd\\">");
       hwdWin.document.write("<td align=\\"left\\">");
       hwdWin.document.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+">&nbsp;"+clrtxt+"</td>");
       hwdWin.document.write("<td align=\\"left\\">");
       hwdWin.document.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+">&nbsp;"+sztxt+"</td>");
       hwdWin.document.write("<td align=\\"left\\">");
       hwdWin.document.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+">&nbsp;"+sytxt+"</td>");
       hwdWin.document.write("</tr>");
     }
   
     function highlightend() { 
       hwdWin.document.write("</table>");
       hwdWin.document.write("</td></tr></table>&nbsp;");
   //    hwdWin.document.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(0)\\">&nbsp;&nbsp;");
       hwdWin.document.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(1)\\">&nbsp;&nbsp;");
       hwdWin.document.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
       hwdWin.document.write("</form>");
       hwdWin.document.write("</body></html>");
     }
   
   </script>
   SUBJAVASCRIPT
   }
   
   
   # --------------------------- show submissions of a student, option to grade 
 sub submission {  sub submission {
   my ($request) = @_;      my ($request,$counter,$total) = @_;
   my $url=$ENV{'form.url'};  
   $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;      (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
   if ($ENV{'form.student'} eq '') { &moreinfo($request,"Need student login id"); return ''; }  #    if ($ENV{'form.student'} eq '') { &moreinfo($request,'Need student login id'); return ''; }
   my ($uname,$udom) = &finduser($ENV{'form.student'});      my ($uname,$udom)     = ($ENV{'form.student'},$ENV{'form.userdom'});
   if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }      ($uname,$udom)        = &finduser($uname) if $udom eq '';
   my $symb=&Apache::lonnet::symbread($url);      $ENV{'form.fullname'} = &get_fullname ($uname,$udom) if $ENV{'form.fullname'} eq '';
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }  #    if ($uname eq '') { &moreinfo($request,'Unable to find student'); return ''; }
   my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,  
       $ENV{'request.course.id'});      my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
   my $result="<h2> Submission Record </h2>  $uname:$udom for $url".$answer;      if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
   return $result;      my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
       $ENV{'form.vProb'} = $ENV{'form.vProb'} ne '' ? $ENV{'form.vProb'} : 'yes';
       my ($classlist,$seclist,$ids,$stusec,$fullname);
   
       # header info
       if ($counter == 0) {
    &sub_page_js($request);
    $request->print('<h2>&nbsp;<font color="#339933">Submission Record</font></h2>'.
    '<font size=+1>&nbsp;<b>Resource: </b>'.$url.'</font>');
   
    # 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') {
       my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
         $ENV{'request.course.id'});
       my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
      $ENV{'request.course.id'});
       my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
       $result.='<table border="0" width="100%"><tr><td bgcolor="#e6ffff">';
       $result.='<b> View of the problem for '.$ENV{'form.fullname'}.
    '</b></td></tr><tr><td bgcolor="#ffffff">'.$rendered.'<br />';
       $result.='<b>Correct answer:</b><br />'.$companswer;
       $result.='</td></tr></table>';
       $result.='</td></tr></table><br />';
       $request->print($result);
    }
   
    # 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 '') {
       %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'} : &Apache::lonnet::metadata($url,'title');
       $ENV{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
   
    }
   
    $request->print('<form action="/adm/grades" method="post" name="SCORE">'."\n".
    '<input type="hidden" name="command"    value="handgrade" />'."\n".
    '<input type="hidden" name="refresh"    value="off" />'."\n".
    '<input type="hidden" name="symb"       value="'.$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="response"   value="'.$ENV{'form.response'}.'">'."\n".
    '<input type="hidden" name="handgrade"  value="'.$ENV{'form.handgrade'}.'">'."\n".
    '<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="'.$ENV{'form.msgsub'}.'" />'."\n".
    '<input type="hidden" name="savemsgN"   value="'.$ENV{'form.savemsgN'}.'" />'."\n".
    '<input type="hidden" name="NCT"'.
    ' value="'.($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : $total+1).'" />'."\n");
   
    my ($cts,$prnmsg) = (1,'');
    while ($cts <= $ENV{'form.savemsgN'}) {
       $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
    ($keyhash{$symb.'_savemsg'.$cts} eq '' ? $ENV{'form.savemsg'.$cts} : $keyhash{$symb.'_savemsg'.$cts}).
    '" />'."\n";
       $cts++;
    }
    $request->print($prnmsg);
   
    if ($ENV{'form.handgrade'} eq 'yes' && $ENV{'form.showgrading'} eq 'yes') {
       $request->print(<<KEYWORDS);
   &nbsp;<b>Keyword Options:</b>&nbsp;
   <a href="javascript:keywords(document.SCORE.keywords)"; 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
           }
       }
   
       my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
       my ($partlist,$handgrade) = &response_type($url);
   
       # Display student info
       $request->print(($counter == 0 ? '' : '<br />'));
       my $result='<table border="0" width=100%><tr><td bgcolor="#777777">'.
    '<table border="0" width=100%><tr bgcolor="#edffff"><td>';
   
   #    $result.='<table border="0"><tr bgcolor="#ffffff"><td><b>Fullname: </b>'.$ENV{'form.fullname'}.
       $result.='<b>Fullname: </b>'.$ENV{'form.fullname'}.
    '<font color="#999999">&nbsp; &nbsp;Username: '.$uname.'</font>'.
    '<font color="#999999">&nbsp; &nbsp;Domain: '.$udom.'</font><br />';
   
       # If this is handgraded, then check for collaborators
       my $col_flag = 0;
       if ($ENV{'form.handgrade'} eq 'yes') {
    my @col_list;
    ($classlist,$seclist,$ids,$stusec,$fullname) = &getclasslist('all','0');
    for (keys (%$handgrade)) {
       my $ncol = &Apache::lonnet::EXT('resource.'.$_.
       '.maxcollaborators',$symb,$udom,$uname);
       if ($ncol > 0) {
    s/\_/\./g;
    if ($record{'resource.'.$_.'.collaborators'} ne '') {
       my (@collaborators) = split(/,?\s+/,
    $record{'resource.'.$_.'.collaborators'});
       my (@badcollaborators);
       if (scalar(@collaborators) != 0) {
    $result.='<b>Collaborators: </b>';
    foreach my $collaborator (@collaborators) {
       $collaborator = $collaborator =~ /\@|:/ ? 
    (split(/@|:/,$collaborator))[0] : $collaborator;
       next if ($collaborator eq $uname);
       if (!grep /^$collaborator:/i,keys %$classlist) {
    push @badcollaborators,$collaborator;
    next;
       }
       $col_flag++;
       push @col_list, $collaborator;
       $result.=$$fullname{$collaborator.':'.$udom}.'&nbsp; &nbsp; &nbsp;';
    }
    $result.='<br />'."\n";
    $result.='<table border="0"><tr bgcolor="#ffbbbb"><td>'.
       'This student has submitted '.
       (scalar (@badcollaborators) > 1 ? '' : 'an').
       ' invalid collaborator'.(scalar (@badcollaborators) > 1 ? 's. ' : '. ').
       (join ', ',@badcollaborators).'</td></tr></table>' 
       if (scalar(@badcollaborators) > 0);
   
    $result.='<table border="0"><tr bgcolor="#ffbbbb"><td>'.
       'This student has submitted too many collaborators. Maximum is '.
       $ncol.'.</td></tr></table>' if (scalar(@collaborators) > $ncol);
    $result.='<input type="hidden" name="collaborator'.$counter.
       '" value="'.(join ':',@col_list).'" />'."\n";
       }
    }
       }
    }
       }
       $request->print($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>'.
    $$fullname{$ENV{'form.'.$uname.':'.$udom.':submitted_by'}}.'</a>';
       $request->print($submitby);
    } else {
       my ($string,$timestamp)=
    &get_last_submission ($symb,$uname,$udom,$ENV{'request.course.id'});
       my $lastsubonly.=''.
    ($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
    $$timestamp).'';
       if ($$timestamp eq '') {
    $lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0].'</td></tr>';
       } else {
    for my $part (sort keys(%$handgrade)) {
       foreach (@$string) {
    my ($partid,$respid) = /^resource\.(\d+)\.(\d+)\.submission/;
    if ($part eq ($partid.'_'.$respid)) {
       my ($ressub,$subval) = split(/:/,$_,2);
       $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
    $partid.'</b> <font color="#999999">( ID '.$respid.
    ' )</font>&nbsp; &nbsp;<b>Answer: </b>'.
    &keywords_highlight($subval).'</td></tr>'
    if ($ENV{'form.lastSub'} eq 'lastonly' || 
       ($ENV{'form.lastSub'} eq 'hdgrade' && 
        $$handgrade{$part} =~ /:yes$/));
    }
       }
    }
       }
       $lastsubonly.='</td></tr><tr><td bgcolor="#ffffff">'."\n";
       $request->print($lastsubonly);
    }
       } else {
    $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
    $ENV{'request.course.id'},
    $last,'.submission',
    'Apache::grades::keywords_highlight'));
       }
       
       # return if view submission with no grading option
       if ($ENV{'form.showgrading'} eq '') {
    $request->print('</td></tr></table></td></tr></table></form>');
    return;
       }
   
       # Grading options
       $result='<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n".
    '<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
    '<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'.$udom.'" />'."\n";
       $result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
    ',\''.$ENV{'form.fullname'}.'\')"; TARGET=_self>'.
    'Compose Message to student'.($col_flag > 1 ? 's' : '').'</a>'.
    '<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;
       for (sort keys(%$handgrade)) {
    my ($partid,$respid) = split(/_/);
    next if ($seen{$partid} > 0);
    $seen{$partid}++;
    next if ($$handgrade{$_} =~ /:no$/);
    push @partlist,$partid;
    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);
    $result='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />';
    $result.='<table border="0"><tr><td><b>Part </b>'.$partid.' <b>Points: </b></td><td>';
   
    my $ctr = 0;
    $result.='<table border="0"><tr>';  # display radio buttons in a nice table 10 across
    while ($ctr<=$wgt) {
       $result.= '<td><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
    'onclick="javascript:writeBox(this.form.GD_BOX'.$counter.'_'.$partid.
    ',this.form.GD_SEL'.$counter.'_'.$partid.','.$ctr.
    ',this.form.stores'.$counter.'_'.$partid.')" '.
    ($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>';
    $result.='<td><input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
       ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
       'onChange="javascript:updateRadio(this.form.RADVAL'.$counter.'_'.$partid.
       ',this.form.GD_BOX'.$counter.'_'.$partid.
       ',this.form.GD_SEL'.$counter.'_'.$partid.
       ',this.form.stores'.$counter.'_'.$partid.
       ','.$wgt.')" /></td>'."\n";
    $result.='<td>/'.$wgt.' '.$wgtmsg.' </td><td>';
   
    $result.='<select name="GD_SEL'.$counter.'_'.$partid.'" '.
       'onChange="javascript:clearRadBox(this.form.RADVAL'.$counter.'_'.$partid.
       ',this.form.GD_BOX'.$counter.'_'.$partid.
       ',this.form.GD_SEL'.$counter.'_'.$partid.
       ',this.form.stores'.$counter.'_'.$partid.')" />'."\n".
       '<option selected="on"> </option>'.
       '<option>excused</option></select>'."&nbsp&nbsp\n";
    $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="0" />';
    $result.='</td></tr></table>';
    $request->print($result);
       }
       $request->print('<input type="hidden" name="partlist'.$counter.'" value="'.(join ":",@partlist).'" />'."\n");
       $request->print('</td></tr></table></td></tr></table>'."\n");
   
       # print end of form
       if ($counter == $total) {
    my $endform.='<table border="0"><tr><td><input type="submit" name="gradeOpt" value="Save & Next" />';
    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;'.
       '<input type="submit" name="gradeOpt" value="Next" />&nbsp'.
       '<input type="submit" name="gradeOpt" value="Previous" />&nbsp'.
       '(Next and Previous do not save the scores.)'.
       '</td><tr></table></form>';
    $request->print($endform);
       }
       return '';
   }
   
   #--- Retrieve the last submission for all the parts
   sub get_last_submission {
       my ($symb,$username,$domain,$course)=@_;
       if ($symb) {
    my (@string,$timestamp);
    my (%returnhash)=&Apache::lonnet::restore($symb,$course,$domain,$username);
    if ($returnhash{'version'}) {
       my %lasthash=();
       my ($version);
       for ($version=1;$version<=$returnhash{'version'};$version++) {
    foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
       $lasthash{$_}=$returnhash{$version.':'.$_};
    }
       }
       foreach ((keys %lasthash)) {
    if ($_ =~ /\.submission$/) {
       my ($partid,$foo) = split(/submission$/,$_);
       my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
    '<font color="red">Draft Copy</font> ' : '';
       push @string, (join(':',$_,$draft.$lasthash{$_}));
    }
    if ($_ =~ /timestamp/) {$timestamp = scalar(localtime($lasthash{$_}))};
       }
    }
    @string = $string[0] eq '' ? 'Nothing submitted - no attempts.' : @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) {
    $string =~ s/\b$_(\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'.$ctr});
       my ($errorflg) = &saveHandGrade($request,$url,$symb,$uname,$udom,$ctr);
       return '' if ($errorflg eq 'error');
   
       my $includemsg = $ENV{'form.includemsg'.$ctr};
       my ($subject,$message,$msgstatus) = ('','','');
       if ($includemsg =~ /savemsg|new$ctr/) {
    $subject = $ENV{'form.msgsub'} if ($includemsg =~ /^msgsub/);
    my (@msgnum) = split(/,/,$includemsg);
    foreach (@msgnum) {
       $message.=$ENV{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
    }
    $message =~ s/\s+/ /g;
    $msgstatus = &Apache::lonmsg::user_normal_msg ($uname,$udom,
          $ENV{'form.msgsub'},$message);
       }
       if ($ENV{'form.collaborator'.$ctr}) {
    my (@collaborators) = split(/:/,$ENV{'form.collaborator'.$ctr});
    foreach (@collaborators) {
       &saveHandGrade($request,$url,$symb,$_,$udom,$ctr,
      $ENV{'form.unamedom'.$ctr});
       if ($message ne '') {
    $msgstatus = &Apache::lonmsg::user_normal_msg ($_,$udom,
          $ENV{'form.msgsub'},
          $message);
       }
    }
       }
       $ctr++;
    }
       }
   
       # 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
       if ($ENV{'form.refresh'} eq 'on') {
    my $ctr = 0;
    $ENV{'form.NTSTU'}=$ngrade;
    while ($ctr < $ngrade) {
       ($ENV{'form.student'},$ENV{'form.userdom'}) = split(/:/,$ENV{'form.unamedom'.$ctr});
       &submission($request,$ctr,$ngrade-1);
       $ctr++;
    }
    return '';
       }
   
       # Get the next/previous one or group of students
       my $firststu = $ENV{'form.unamedom0'};
       my $laststu = $ENV{'form.unamedom'.($ngrade-1)};
       $ctr = 2;
       while ($laststu eq '') {
    $laststu  = $ENV{'form.unamedom'.($ngrade-$ctr)};
    $ctr++;
    $laststu = $firststu if ($ctr > $ngrade);
       }
   
       my ($classlist,$seclist,$ids,$stusec,$fullname) = &getclasslist($ENV{'form.section'},'0');
       my (@parsedlist,@nextlist);
       my ($nextflg) = 0;
       foreach (sort {$$fullname{$a} cmp $$fullname{$b} } keys %$fullname) {
    if ($nextflg == 1 && $button =~ /Next$/) {
       push @parsedlist,$_;
    }
    $nextflg = 1 if ($_ eq $laststu);
    if ($button eq 'Previous') {
       last if ($_ eq $firststu);
       push @parsedlist,$_;
    }
       }
       $ctr = 0;
       my ($partlist,$handgrade) = &response_type($ENV{'form.url'});
       @parsedlist = reverse @parsedlist if ($button eq 'Previous');
       foreach my $student (@parsedlist) {
    my ($uname,$udom) = split(/:/,$student);
    if ($ENV{'form.submitonly'} eq 'yes') {
       my (%status) = &student_gradeStatus($ENV{'form.url'},$symb,$udom,$uname,$partlist) ;
       my $statusflg = '';
       foreach (keys(%status)) {
    $statusflg = 1 if ($status{$_} ne 'nothing');
    my ($foo,$partid,$foo1) = split(/\./);
    $statusflg = '' if ($status{'resource.'.$partid.'.submitted_by'} ne '');
       }
       next if ($statusflg eq '');
    }
    push @nextlist,$student if ($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{$_};
   # $ENV{'form.'.$_.':submitted_by'} = $submitter;
   # print "submitter=$ENV{'form.'.$_.':submitted_by'}= $submitter:<br>";
    &submission($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,$submitter) = @_;
       my %record=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},$domain,$stuname);
       my %newrecord;
       foreach (split(/:/,$ENV{'form.partlist'.$newflg})) {
    if ($ENV{'form.GD_SEL'.$newflg.'_'.$_} eq 'excused') {
       $newrecord{'resource.'.$_.'.solved'} = 'excused' 
    if ($record{'resource.'.$_.'.solved'} ne 'excused');
    } else {
       my $pts = ($ENV{'form.GD_BOX'.$newflg.'_'.$_} ne '' ? 
          $ENV{'form.GD_BOX'.$newflg.'_'.$_} : 
          $ENV{'form.RADVAL'.$newflg.'_'.$_});
       if ($pts eq '') {
    &userError($request,'No point was assigned for part '.$_.
      ' and for username '.$stuname.'.');
    return 'error';
       }
       my $wgt = $ENV{'form.WGT'.$newflg.'_'.$_} eq '' ? 1 : 
    $ENV{'form.WGT'.$newflg.'_'.$_};
       my $partial= $pts/$wgt;
       $newrecord{'resource.'.$_.'.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));
    }
       }
   
       if (scalar(keys(%newrecord)) > 0) {
    $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
    &Apache::lonnet::cstore(\%newrecord,$symb,
    $ENV{'request.course.id'},$domain,$stuname);
       }
       return '';
   }
   
   #--------------------------------------------------------------------------------------
   #
   #-------------------------- 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 viewOneStudent(user,domain) {
    document.onestudent.student.value = user;
    document.onestudent.userdom.value = domain;
    document.onestudent.submit();
       }
   
       function writePoint(partid,weight,point) {
    var radioButton = eval("document.classgrade.RADVAL_"+partid);
    var textbox = eval("document.classgrade.TEXTVAL_"+partid);
    if (point == "textval") {
       var point = eval("document.classgrade.TEXTVAL_"+partid+".value");
       if (isNaN(point) || point < 0) {
    alert("A number equal or greater than 0 is expected. Entered value = "+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 (point > weight) {
    var resp = confirm("You entered a value ("+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 (point == i) {
       radioButton[i].checked=true;
    }
       }
   
    } else {
       textbox.value = point;
    }
    for (i=0;i<document.classgrade.total.value;i++) {
       var user = eval("document.classgrade.ctr"+i+".value");
       var scorename = eval("document.classgrade.GD_"+user+
    "_"+partid+"_aw");
       var saveval   = eval("document.classgrade.GD_"+user+
    "_"+partid+"_sv_s.value");
       var selname   = eval("document.classgrade.GD_"+user+"_"+partid+"_sv");
       if (saveval != "correct") {
    scorename.value = point;
    if (selname[0].selected != true) {
       selname[0].selected = true;
    }
       }
    }
    var selval   = eval("document.classgrade.SELVAL_"+partid);
    selval[0].selected = true;
       }
   
       function writeRadText(partid,weight) {
    var selval   = eval("document.classgrade.SELVAL_"+partid);
    var radioButton = eval("document.classgrade.RADVAL_"+partid);
    var textbox = eval("document.classgrade.TEXTVAL_"+partid);
    if (selval[1].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 = eval("document.classgrade.ctr"+i+".value");
    var scorename = eval("document.classgrade.GD_"+user+
        "_"+partid+"_aw");
    var saveval   = eval("document.classgrade.GD_"+user+
        "_"+partid+"_sv_s.value");
    var selname   = eval("document.classgrade.GD_"+user+
        "_"+partid+"_sv");
    if (saveval != "correct") {
       scorename.value = "";
       selname[1].selected = true;
    }
       }
    } else {
       for (i=0;i<document.classgrade.total.value;i++) {
    var user = eval("document.classgrade.ctr"+i+".value");
    var scorename = eval("document.classgrade.GD_"+user+
        "_"+partid+"_aw");
    var saveval   = eval("document.classgrade.GD_"+user+
        "_"+partid+"_sv_s.value");
    var selname   = eval("document.classgrade.GD_"+user+
        "_"+partid+"_sv");
    if (saveval != "correct") {
       scorename.value = eval("document.classgrade.GD_"+user+
        "_"+partid+"_aw_s.value");;
       selname[0].selected = true;
    }
       }
    }    
       }
   
       function changeSelect(partid,user) {
    var selval = eval("document.classgrade.GD_"+user+'_'+partid+"_sv");
    var textbox = eval("document.classgrade.GD_"+user+'_'+partid+"_aw");
    var point  = textbox.value;
    var weight = eval("document.classgrade.weight_"+partid+".value");
   
    if (isNaN(point) || point < 0) {
       alert("A number equal or greater than 0 is expected. Entered value = "+point);
       textbox.value = "";
       return;
    }
    if (point > weight) {
       var resp = confirm("You entered a value ("+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 = eval("document.classgrade.GD_"+user+'_'+partid+"_sv");
    if (selval[1].selected) {
       var boxval = eval("document.classgrade.GD_"+user+'_'+partid+"_aw");
       boxval.value = "";
    }
       }
   
       function resetEntry(numpart) {
    for (ctpart=0;ctpart<numpart;ctpart++) {
       var partid = eval("document.classgrade.partid_"+ctpart+".value");
       var radioButton = eval("document.classgrade.RADVAL_"+partid);
       var textbox = eval("document.classgrade.TEXTVAL_"+partid);
       var selval  = eval("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 = eval("document.classgrade.ctr"+i+".value");
    var resetscore = eval("document.classgrade.GD_"+user+
         "_"+partid+"_aw");
    resetscore.value = eval("document.classgrade.GD_"+user+
    "_"+partid+"_aw_s.value");
   
    var saveselval   = eval("document.classgrade.GD_"+user+
        "_"+partid+"_sv_s.value");
   
    var selname   = eval("document.classgrade.GD_"+user+"_"+partid+"_sv");
    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);
   
   #get resource reference      my ($symb,$url) = ($ENV{'form.symb'},$ENV{'form.url'}); 
   my $url=$ENV{'form.url'};      my $result='<h2><font color="#339933">Manual Grading</font></h2>';
   $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;  
   my $symb=$ENV{'form.symb'};      $result.='<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font>'."\n";
   if (!$symb) { $symb=&Apache::lonnet::symbread($url); }  
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }      #view individual student submission form - called using Javascript viewOneStudent
       $result.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
   #get classlist   '<input type="hidden" name="symb"    value="'.$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"};   '<input type="hidden" name="command" value="submission" />'."\n".
   #print "Found $cdom:$cnum:$chome<br />";   '<input type="hidden" name="student" value="" />'."\n".
   my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');   '<input type="hidden" name="userdom" value="" />'."\n".
    '</form>'."\n";
   
   #get list of parts for this problem      #beginning of class grading form
   my (@parts) = &getpartlist($url);      $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
    '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
   #start the form   '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
   $result = '<form action="/adm/grades" method="post">'."\n".  
     '<input type="hidden" name="symb" value="'.$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>'."\n".  
       '<tr><td>UserId</td><td>Domain</td>'."\n";  
   foreach my $part (@parts) {  
      my $display=&Apache::lonnet::metadata($url,$part.'.display');  
      if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }  
      $result.="<td>$display</td>\n";  
    }  
   $result.="</tr>";  
   #get info for each student  
   foreach my $student ( sort(@{ $classlist{'allids'} }) ) {  
     $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);  
   }  
   $result.='</table><input type="submit" name="submit" value="Submit Changes" /></form>';  
   
   return $result;      $result.='To assign the same score for all the students use the radio buttons or '.
    'text box below. To assign scores individually fill in the score boxes for '.
    'each student in the table below. <font color="red">A part that has already '.
    'been graded does not get changed using the radio buttons or text box. '.
    'If needed, it has to be changed individually.</font>';
   
       #radio buttons/text box for assigning points for a section or class.
       #handles different parts of a problem
       my ($partlist,$handgrade) = &response_type($ENV{'form.url'});
       my %weight = ();
       my $ctsparts = 0;
       $result.='<table border="0">';
       for (sort keys(%$handgrade)) {
    my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
    my ($partid,$respid) = split (/_/);
    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></select></td></tr>'."\n";
    $ctsparts++;
       }
       $result.='</table><input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
       $result.='<input type="button" value="Reset" '.
    'onClick="javascript:resetEntry('.$ctsparts.');" TARGET=_self> &nbsp; &nbsp;';
   #    $result.='<input type="button" value="Submit Changes" '.
   # 'onClick="submit();" TARGET=_self />'."\n";
       $result.= '<input type="submit" name="submit"  value="Submit Changes" />'."\n";
   
       #table listing all the students in a section/class
       #header of table
       $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
    '<table border=0><tr bgcolor="#deffff">'.
    '<td><b>Fullname</b></td><td><b>Username</b></td><td><b>Domain</b></td>'."\n";
       my (@parts) = sort(&getpartlist($url));
       foreach my $part (@parts) {
    my $display=&Apache::lonnet::metadata($url,$part.'.display');
    next if ($display =~ /^Number of Attempts/);
    if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
    if ($display =~ /^Partial Credit Factor/) {
       $_ = $display;
       my ($partid) = /.*?(\d+).*/;
       $result.='<td><b>Score Part '.$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>';
   
       #get info for each student
       #list all the students - with points and grade status
       my ($classlist,$seclist,$ids,$stusec,$fullname) = &getclasslist($ENV{'form.section'},'0');
       my $ctr = 0;
       foreach (sort {$$fullname{$a} cmp $$fullname{$b} } keys %$fullname) {
    my ($uname,$udom) = split(/:/);
    $result.='<input type="hidden" name="ctr'.$ctr.'" value="'.$uname.'" />'."\n";
    $result.=&viewstudentgrade($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="submit" name="submit" value="Submit Changes" /></form>';
       $result.=&show_grading_menu_form($symb,$url);
       return $result;
 }  }
   
   #--- call by previous routine to display each student
   sub viewstudentgrade {
       my ($url,$symb,$courseid,$student,$fullname,$parts,$weight) = @_;
       my ($uname,$udom) = split(/:/,$student);
       my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
       my $result='<tr bgcolor="#ffffdd"><td>'.
    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
    '\')"; TARGET=_self>'.$fullname.'</a>'.
    '</td><td>'.$uname.'</td><td align="middle">'.$udom.'</td>'."\n";
       foreach my $part (@$parts) {
    my ($temp,$part,$type)=split(/_/,$part);
    my $score=$record{"resource.$part.$type"};
    next if $type eq 'tries';
    if ($type eq 'awarded') {
       my $pts = $score eq '' ? '' : $score*$$weight{$part};
       $result.='<input type="hidden" name="'.
    'GD_'.$uname.'_'.$part.'_aw_s" value="'.$pts.'" />'."\n";
       $result.='<td align="middle"><input type="text" name="'.
    'GD_'.$uname.'_'.$part.'_aw" '.
    'onChange="javascript:changeSelect('.$part.',\''.$uname.
    '\')" value="'.$pts.'" size="4" /></td>'."\n";
    } elsif ($type eq 'solved') {
       my ($status,$foo)=split(/_/,$score,2);
       $status = 'nothing' if ($status eq '');
       $result.='<input type="hidden" name="'.
    'GD_'.$uname.'_'.$part.'_sv_s" value="'.$status.'" />'."\n";
       $result.='<td align="middle"><select name="'.
    'GD_'.$uname.'_'.$part.'_sv" '.
    'onChange="javascript:changeOneScore('.$part.',\''.$uname.'\')" >'."\n";
       my $optsel = '<option selected="on"> </option><option>excused</option>'."\n";
       $optsel = '<option> </option><option selected="on">excused</option>'."\n"
    if ($status eq 'excused');
       $result.=$optsel;
       $result.="</select></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 $symb=$ENV{'form.symb'};
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$symb:$ENV{'form.url'}"); return ''; }      my $url =$ENV{'form.url'};
   my $url=$ENV{'form.url'};      my $title='<h2><font color="#339933">Current Grade Status</font></h2>';
   #get classlist      $title.='<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font><br />'."\n";
   my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});      $title.='<font size=+1><b>Section: </b>'.$ENV{'form.section'}.'</font>'."\n";
   my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};      $title.= &show_grading_menu_form ($symb,$url);
   #print "Found $cdom:$cnum:$chome<br />";      my $result= '<table border="0"><tr><td bgcolor="#777777">'."\n";
   my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');      $result.= '<table border="0"><tr bgcolor="#deffff">'.
    '<td rowspan=2><b>Username</b></td><td rowspan=2><b>Fullname</b></td>'."\n";
   #get list of parts for this problem  
   my (@parts) = &getpartlist($url);      my %scoreptr = (
       'correct'  =>'correct_by_override',
   $result.='<form action="/adm/grades" method="post">'."\n".      'incorrect'=>'incorrect_by_override',
     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".      'excused'  =>'excused',
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".      'ungraded' =>'ungraded_attempted',
  '<input type="hidden" name="command" value="viewgrades" />'."\n".      'nothing'  => '',
   '<input type="submit" name="submit" value="See Grades" /> <br />'."\n";      );
       my ($classlist,$seclist,$ids,$stusec,$fullname) = &getclasslist($ENV{'form.section'},'0');
   
       my (@partid);
       my %weight = ();
       my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
       while ($ctr < $ENV{'form.totalparts'}) {
    my $partid = $ENV{'form.partid_'.$ctr};
    push @partid,$partid;
    $weight{$partid} = $ENV{'form.weight_'.$partid};
    $ctr++;
    $result .= '<td colspan = 2 align="center"><b>Part '.$partid.
       '</b> (Weight = '.$weight{$partid}.')</td>';
       }
       $result .= '</tr><tr bgcolor="#deffff">';
       foreach (@partid) {
    $result .= '<td align="center">&nbsp;<b>Old Score</b>&nbsp;</td>'.
       '<td align="center">&nbsp;<b>New Score</b>&nbsp;</td>';
       }
       $result .= '</tr>'."\n";
   
   foreach my $student ( sort(@{ $classlist{'allids'} }) ) {      for ($i=0; $i<$ENV{'form.total'}; $i++) {
     $result.=&setstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);   my $user = $ENV{'form.ctr'.$i};
    my %newrecord;
    my $updateflag = 0;
    my @userdom = grep /^$user:/,keys %$classlist;
    my ($foo,$udom) = split(/:/,$userdom[0]);
   
    $result .= '<tr bgcolor="#ffffde"><td>'.$user.'&nbsp;</td><td>'.
       $$fullname{$userdom[0]}.'&nbsp;</td>';
   
    foreach (@partid) {
       my $old_aw    = $ENV{'form.GD_'.$user.'_'.$_.'_aw_s'};
       my $old_part  = $old_aw eq '' ? '' : $old_aw/$weight{$_};
       my $old_score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_sv_s'}};
   
       my $awarded   = $ENV{'form.GD_'.$user.'_'.$_.'_aw'};
       my $partial   = $awarded eq '' ? '' : $awarded/$weight{$_};
       my $score;
       if ($partial eq '') {
    $score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_sv_s'}};
       } elsif ($partial > 0) {
    $score = 'correct_by_override';
       } elsif ($partial == 0) {
    $score = 'incorrect_by_override';
       }
       $score = 'excused' if (($ENV{'form.GD_'.$user.'_'.$_.'_sv'} eq 'excused') &&
      ($score ne 'excused'));
       $result .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
    '<td align="center">'.$awarded.
    ($score eq 'excused' ? $score : '').'&nbsp;</td>';
   
       next if ($old_part eq $partial && $old_score eq $score);
   
       $updateflag = 1;
       $newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
       $newrecord{'resource.'.$_.'.solved'}   = $score;
       $rec_update++;
    }
    $result .= '</tr>'."\n";
    if ($updateflag) {
       $count++;
       $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
       &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},
       $udom,$user);
    }
       }
       $result .= '</table></td></tr></table>'."\n";
       my $msg = '<b>Number of records updated = '.$rec_update.
    ' for '.$count.' student'.($count <= 1 ? '' : 's').'.</b><br />'.
    '<b>Total number of students = '.$ENV{'form.total'}.'</b><br />';
       return $title.$msg.$result;
   }
   #------------- end of section for handling grading by section/class ---------
   #
   #----------------------------------------------------------------------------
   
   
   #----------------------------------------------------------------------------
   #
   #-------------------------- Next few routines handles grading by csv upload
   #
   #--- Javascript to handle csv upload
   sub csvupload_javascript_reverse_associate {
     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 (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
   }
   
   sub csvupload_javascript_forward_associate {
     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 $result;
       my $javascript;
       if ($ENV{'form.upfile_associate'} eq 'reverse') {
    $javascript=&csvupload_javascript_reverse_associate();
       } else {
    $javascript=&csvupload_javascript_forward_associate();
       }
       $request->print(<<ENDPICK);
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
   <h3>Uploading Class Grades for resource $url</h3>
   <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="command"    value="csvuploadassign" />
   <hr />
   <script type="text/javascript" language="Javascript">
   $javascript
   </script>
   ENDPICK
   return '';
   
   }
   
   sub csvupload_fields {
       my ($url) = @_;
       my (@parts) = &getpartlist($url);
       my @fields=(['username','Student Username'],['domain','Student Domain']);
       foreach my $part (sort(@parts)) {
    my @datum;
    my $display=&Apache::lonnet::metadata($url,$part.'.display');
    my $name=$part;
    if  (!$display) { $display = $name; }
    @datum=($name,$display);
    push(@fields,\@datum);
       }
       return (@fields);
   }
   
   sub csvuploadmap_footer {
       my ($request,$i,$keyfields) =@_;
       $request->print(<<ENDPICK);
   </table>
   <input type="hidden" name="nfields" value="$i" />
   <input type="hidden" name="keyfields" value="$keyfields" />
   <input type="button" onClick="javascript:verify(this.form)" value="Assign Grades" /><br />
   </form>
   ENDPICK
   }
   
   sub 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);
       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 $cdom=$ENV{"course.$courseid.domain"};
   #  my $cnum=$ENV{"course.$courseid.num"};
       my ($classlist) = &getclasslist('all','1');
       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 %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('<br /><font size="+1"><b>Skipped Students</b></font><br />');
    foreach my $student (@skipped) { $request->print("<br />$student"); }
       }
       $request->print(&view_edit_entire_class_form($symb,$url));
       $request->print(&show_grading_menu_form($symb,$url));
       return '';
   }
   #------------- end of section for handling csv file upload ---------
   #
   #-------------------------------------------------------------------
   
   #-------------------------- Menu interface -------------------------
   #
   #--- Show a Grading Menu button - Calls the next routine ---
   sub show_grading_menu_form {
       my ($symb,$url)=@_;
       my $result.='<form action="/adm/grades" method="post">'."\n".
    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url" value="'.$url.'" />'."\n".
    '<input type="hidden" name="command" value="gradingmenu" />'."\n".
    '<input type="submit" name="submit" value="Grading Menu" />'."\n".
    '</form>'."\n";
       return $result;
   }
   
   #--- Displays the main menu page -------
   sub gradingmenu {
       my ($request) = @_;
       my ($symb,$url)=&get_symb_and_url($request);
       if (!$symb) {return '';}
       my $result='<h2>&nbsp;<font color="#339933">Select a Grading Method</font></h2>';
       $result.='<table border="0">';
       $result.='<tr><td colspan=3><font size=+1><b>Resource: </b>'.$url.'</font></td></tr>';
       my ($partlist,$handgrade) = &response_type($url);
       my ($resptype,$hdgrade)=('','no');
       for (sort keys(%$handgrade)) {
    my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
    $resptype = $responsetype;
    $hdgrade = $handgrade if ($handgrade eq 'yes');
    $result.='<tr><td><b>Part </b>'.(split(/_/))[0].'</td>'.
       '<td><b>Type: </b>'.$responsetype.'</td>'.
       '<td><b>Handgrade: </b>'.$handgrade.'</font></td></tr>';
       }
       $result.='</table>';
       $result.=&view_edit_entire_class_form($symb,$url).'<br />';
       $result.=&upcsvScores_form($symb,$url).'<br />';
       $result.=&viewGradeaStu_form($symb,$url,$resptype,$hdgrade).'<br />';
       $result.=&verifyReceipt_form($symb,$url) 
    if ((&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) && ($symb));
    
       return $result;
   }
   
   #--- Menu for grading a section or the whole class ---
   sub view_edit_entire_class_form {
       my ($symb,$url)=@_;
       my ($classlist,$sections) = &getclasslist('all','0');
       my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
       $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
       $result.='&nbsp;<b>View/Grade Entire Section/Class</b></td></tr>'."\n";
       $result.='<tr bgcolor=#ffffe6><td>'."\n";
       $result.='<form action="/adm/grades" method="post">'."\n".
    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url" value="'.$url.'" />'."\n".
    '<input type="hidden" name="command" value="viewgrades" />'."\n";
       $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";
       foreach (sort (@$sections)) {
    $result.= '<option>'.$_.'</option>'."\n";
       }
       $result.='<option selected="on">all</select>'."<br />\n";
       $result.='&nbsp;<input type="submit" name="submit" value="View/Grade" /></form>'."\n";
       $result.='</td></tr></table>'."\n";
       $result.='</td></tr></table>'."\n";
       return $result;
   }
   
   $result.='<input type="submit" name="submit" value="See Grades" /></table></form>';  #--- Menu to upload a csv scores ---
   return $result;  sub upcsvScores_form {
       my ($symb,$url) = @_;
       if (!$symb) {return '';}
       my $result.='<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 above 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" />
   $upfile_select
   <br />&nbsp;<input type="submit" name="submit" value="Upload Grades" />
   </form>
   ENDUPFORM
       $result.='</td></tr></table>'."\n";
       $result.='</td></tr></table>'."\n";
       return $result;
   }
   
   #--- Handgrading problems ---
   sub viewGradeaStu_form {
       my ($symb,$url,$response,$handgrade) = @_;
       my ($classlist,$sections) = &getclasslist('all','0');
       my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
       $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
       $result.='&nbsp;<b>View/Grade an Individual Student\'s Submission</b></td></tr>'."\n";
       $result.='<tr bgcolor=#ffffe6><td>'."\n";
       $result.='<form action="/adm/grades" method="post">'."\n".
    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url" value="'.$url.'" />'."\n".
    '<input type="hidden" name="response" value="'.$response.'" />'."\n".
    '<input type="hidden" name="handgrade" value="'.$handgrade.'" />'."\n".
    '<input type="hidden" name="showgrading" value="yes" />'."\n".
    '<input type="hidden" name="command" value="submission" />'."\n";
   
       $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";
       foreach (sort (@$sections)) {
    $result.= '<option>'.$_.'</option>'."\n";
       }
       $result.= '<option selected="on">all</select>'."\n";
       $result.='&nbsp;&nbsp;<b>Display students who has: </b>'.
    '<input type="radio" name="submitonly" value="yes" checked> submitted'.
    '<input type="radio" name="submitonly" value="all"> everybody <br />';
       $result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />' 
    if (grep /no/,@$sections);
       
       $result.='<br />&nbsp;<input type="submit" name="submit" value="View/Grade" />'."\n".
    '</form>'."\n";
       $result.='</td></tr></table>'."\n";
       $result.='</td></tr></table>'."\n";
       return $result;
   }
   
   #--- Form to input a receipt number ---
   sub verifyReceipt_form {
       my ($symb,$url) = @_;
       my $cdom=$ENV{"course.$ENV{'request.course.id'}.domain"};
       my $cnum=$ENV{"course.$ENV{'request.course.id'}.num"};
       my $hostver=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'});
   
       my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
       $result.='<table width=100% border=0><tr><td bgcolor=#e6ffff>'."\n";
       $result.='&nbsp;<b>Verify a Submission Receipt Issued by this Server</td></tr>'."\n";
       $result.='<tr bgcolor=#ffffe6><td>'."\n";
       $result.='<form action="/adm/grades" method="post">'."\n";
       $result.='&nbsp;<tt>'.$hostver.'-<input type="text" name="receipt" size="4"></tt><br />'."\n";
       $result.='&nbsp;<input type="submit" name="submit" value="Verify Receipt">'."\n";
       $result.='<input type="hidden" name="command" value="verify">'."\n";
       if ($ENV{'form.url'}) {
    $result.='<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />';
       }
       if ($ENV{'form.symb'}) {
    $result.='<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />';
       }
       $result.='</form>';
       $result.='</td></tr></table>'."\n";
       $result.='</td></tr></table>'."\n";
       return $result;
   }
   
   sub handler {
       my $request=$_[0];
       
       if ($ENV{'browser.mathml'}) {
    $request->content_type('text/xml');
       } else {
    $request->content_type('text/html');
       }
       $request->send_http_header;
       return '' if $request->header_only;
       &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
       my $url=$ENV{'form.url'};
       my $symb=$ENV{'form.symb'};
       my $command=$ENV{'form.command'};
       if (!$url) {
    my ($temp1,$temp2);
    ($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);
    $url = $ENV{'form.url'};
       }
       &send_header($request);
       if ($url eq '' && $symb eq '') {
    if ($ENV{'user.adv'}) {
       if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&
    ($ENV{'form.codethree'})) {
    my $token=$ENV{'form.codeone'}.'*'.$ENV{'form.codetwo'}.'*'.
       $ENV{'form.codethree'};
    my ($tsymb,$tuname,$tudom,$tcrsid)=
       &Apache::lonnet::checkin($token);
    if ($tsymb) {
       my ($map,$id,$url)=split(/\_\_\_/,$tsymb);
       if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
    $request->print(
    &Apache::lonnet::ssi('/res/'.$url,
        ('grade_username' => $tuname,
         'grade_domain' => $tudom,
         'grade_courseid' => $tcrsid,
         'grade_symb' => $tsymb)));
       } else {
    $request->print('<h2>Not authorized: '.$token.'</h2>');
       }           
    } else {
       $request->print('<h2>Not a valid DocID: '.$token.'</h2>');
    }
       } else {
    $request->print(&Apache::lonxml::tokeninputfield());
       }
    }
       } else {
    #&Apache::lonhomework::showhashsubset(\%ENV,'^form');
    $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
    if ($command eq 'submission') {
       &listStudents($request) if ($ENV{'form.student'} eq '');
       &submission($request,0,0) if ($ENV{'form.student'} ne '');
    } elsif ($command eq 'processGroup') {
       &processGroup($request);
    } elsif ($command eq 'gradingmenu') {
       $request->print(&gradingmenu($request));
    } elsif ($command eq 'viewgrades') {
       $request->print(&viewgrades($request));
    } elsif ($command eq 'handgrade') {
       $request->print(&processHandGrade($request));
    } elsif ($command eq 'editgrades') {
       $request->print(&editgrades($request));
    } elsif ($command eq 'verify') {
       $request->print(&verifyreceipt($request));
    } elsif ($command eq 'csvupload') {
       $request->print(&csvupload($request));
    } elsif ($command eq 'viewclasslist') {
       $request->print(&viewclasslist($request));
    } elsif ($command eq 'csvuploadmap') {
       $request->print(&csvuploadmap($request));
    } elsif ($command eq 'csvuploadassign') {
       if ($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));
       }
    } else {
       $request->print("Unknown action: $command:");
    }
       }
       &send_footer($request);
       return '';
 }  }
   
 sub send_header {  sub send_header {
   my ($request)= @_;      my ($request)= @_;
   $request->print(&Apache::lontexconvert::header());      $request->print(&Apache::lontexconvert::header());
 #  $request->print("  #  $request->print("
 #<script>  #<script>
 #remotewindow=open('','homeworkremote');  #remotewindow=open('','homeworkremote');
 #remotewindow.close();  #remotewindow.close();
 #</script>");   #</script>"); 
   $request->print('<body bgcolor="#FFFFFF">');      $request->print('<body bgcolor="#FFFFFF">');
 }  }
   
 sub send_footer {  sub send_footer {
   my ($request)= @_;      my ($request)= @_;
   $request->print('</body>');      $request->print('</body>');
   $request->print(&Apache::lontexconvert::footer());      $request->print(&Apache::lontexconvert::footer());
 }  
   
 sub handler {  
   my $request=$_[0];  
   
   if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}  
     
   if ($ENV{'browser.mathml'}) {  
     $request->content_type('text/xml');  
   } else {  
     $request->content_type('text/html');  
   }  
   $request->send_http_header;  
   return OK if $request->header_only;  
   my $url=$ENV{'form.url'};  
   my $symb=$ENV{'form.symb'};  
   my $command=$ENV{'form.command'};  
     
   &send_header($request);  
   if ($url eq '' && $symb eq '') {  
     $request->print("Non-Contextual Access Unsupported:$command:$url:");  
   } else {  
     $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});  
     if ($command eq 'submission') {  
       $request->print(&submission($request));  
     } elsif ($command eq 'viewgrades') {  
       $request->print(&viewgrades($request));  
     } elsif ($command eq 'editgrades') {  
       $request->print(&editgrades($request));  
     } else {  
       $request->print("Unknown action:$command:");  
     }  
   }  
   &send_footer($request);  
   return OK;  
 }  }
   
 1;  1;
Removed from v.1.9  
changed lines
  Added in v.1.44

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