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Diff for /loncom/homework/grades.pm between versions 1.2 and 1.34

version 1.2, 2001/02/09 03:24:45 version 1.34, 2002/07/01 21:20:29
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   # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler  # The LON-CAPA Grading handler
 # Guy Albertelli  #
 # 11/30 Gerd Kortemeyer  # $Id$
 # 6/1 Gerd Kortemeyer  #
   # 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
   # 6/8 Gerd Kortemeyer
   # 7/26 H.K. Ng
   # 8/20 Gerd Kortemeyer
   # Year 2002
   # June 2002 H.K. Ng
   #
   
 package Apache::grades;  package Apache::grades;
 use strict;  use strict;
 use Apache::style;  use Apache::style;
 use Apache::lonxml;  use Apache::lonxml;
 use Apache::lonnet;  use Apache::lonnet;
   use Apache::loncommon;
 use Apache::lonhomework;  use Apache::lonhomework;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   
 sub moreinfo {  sub moreinfo {
   my ($request,$reason) = @_;    my ($request,$reason) = @_;
   $request->print("Unable to process request: $reason");    $request->print("Unable to process request: $reason");
   $request->print('<form action="/adm/grades" method="post">'."\n");    if ( $Apache::grades::viewgrades eq 'F' ) {
   $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'"></input>'."\n");      $request->print('<form action="/adm/grades" method="post">'."\n");
   $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'"></input>'."\n");      if ($ENV{'form.url'}) {
   $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'"></input>'."<br />\n");        $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
   $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'"></input>'."<br />\n");      }
   $request->print('<input type="submit" name="submit" value="ReSubmit"></input>'."<br />\n");      if ($ENV{'form.symb'}) {
   $request->print('</form>');        $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
       }
       $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");
       $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'" />'."<br />\n");
       $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'" />'."<br />\n");
       $request->print('<input type="submit" name="submit" value="ReSubmit" />'."<br />\n");
       $request->print('</form>');
     }
     return '';
 }  }
   
   sub verifyreceipt {
       my $request=shift;
       my $courseid=$ENV{'request.course.id'};
   #    my $cdom=$ENV{"course.$courseid.domain"};
   #    my $cnum=$ENV{"course.$courseid.num"};
       my $receipt=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.
                   $ENV{'form.receipt'};
       $receipt=~s/[^\-\d]//g;
       my $symb=$ENV{'form.symb'};
       unless ($symb) {
    $symb=&Apache::lonnet::symbread($ENV{'form.url'});
       }
       if ((&Apache::lonnet::allowed('mgr',$courseid)) && ($symb)) {
           $request->print('<h1>Verifying Submission Receipt '.$receipt.'</h1>');
           my $matches=0;
           my ($classlist) = &getclasslist('all','0');
           foreach my $student ( sort(@{ $$classlist{'all'} }) ) {
               my ($uname,$udom)=split(/\:/,$student);
               if ($receipt eq 
                &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb)) {
                  $request->print('Matching '.$student.'<br>');
                  $matches++;
      }
           }
           $request->printf('<p>'.$matches." match%s</p>",$matches <= 1 ? '' : 'es');
   # needs to print who is matched
       }
       return '';
   }
   
   sub student_gradeStatus {
     my ($url,$udom,$uname) = @_;
     my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
     my %record= &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
     foreach my $part (&getpartlist($url)) {
       my ($temp,$part,$type)=split(/_/,$part);
       if ($type eq 'solved') {
         my ($status,$foo)=split(/_/,$record{"resource.$part.$type"},2);
         $status = 'partial' if ($foo =~ /^partially/);
         $status = 'nothing' if ($status eq '');
         return $type,$status;
       }
     }
     return '';
   }
   
   sub get_fullname {
       my ($sname,$sdom) = @_;
       my %name=&Apache::lonnet::get('environment', ['lastname','generation',
     'firstname','middlename'],
     $sdom,$sname);
       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;
   }
   
   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'};
     my $submitonly=$ENV{'form.submitonly'};
   
     $request->print(<<ENDTABLEST);
   <h2><font color="#339933">&nbsp;View Submissions for a Student or a Group of Students</font></h2>
   &nbsp;<font size=+1><b>Resource:</b> $ENV{'form.url'}<br /><br />
   <form action="/adm/grades" method="post">&nbsp;<b>View Options</b></font><br />
   &nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" checked> no 
   <input type="radio" name="vProb" value="yes"> yes 
   &nbsp;&nbsp;&nbsp;<b>Submissions: </b><input type="radio" name="lastSub" value="last" checked> last 
   <input type="radio" name="lastSub" value="all"> all 
   <input type="hidden" name="section" value="$getsec">
   <input type="hidden" name="submitonly" value="$submitonly">
   <table border="0"><tr><td bgcolor="#777777">
   <table border="0"><tr bgcolor="#e6ffff">
   <td><b>&nbsp;Select&nbsp;</b></td><td><b>&nbsp;Username&nbsp;</b></td>
   <td><b>&nbsp;Fullname&nbsp;</b></td><td><b>&nbsp;Domain&nbsp;</b></td>
   <td><b>&nbsp;Grade Status&nbsp;</b></td></tr>
   ENDTABLEST
     if ($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 ($classlist) = &getclasslist($getsec,'0');
     foreach my $student ( sort(@{ $$classlist{$getsec} }) ) {
         my ($sname,$sdom) = split(/:/,$student);
         my ($type,$status) = &student_gradeStatus($ENV{'form.url'},$cdom,$sname);
         next if ($status eq 'nothing' && $submitonly eq 'yes');
   
         my $fullname = &get_fullname($sname,$sdom);
         if ( $Apache::grades::viewgrades eq 'F' ) {
     $request->print("\n".'<tr bgcolor="#ffffe6">'.
     '<td align="center"><input type=checkbox name="stuinfo" value="'.
     $student.':'.$fullname.'"></td>'."\n".
     '<td>&nbsp;'.$sname.'&nbsp;</td>'."\n".
     '<td>&nbsp;'.$fullname.'&nbsp;</td>'."\n".
     '<td align="middle">&nbsp;'.$sdom.'&nbsp;</td>'."\n");
     $request->print('<td align="middle">&nbsp;'.$status.'&nbsp;</td>'."\n");
   
     $request->print('</tr>');
         }
     }
     $request->print('</table></td></tr></table>');
     $request->print('<input type="submit" name="submit" value="View/Grade" /><form />');
   }
   
   sub processGroup {
     my ($request)  = shift;
     my $ctr        = 0;
     my @stuchecked = (ref($ENV{'form.stuinfo'}) ? @{$ENV{'form.stuinfo'}}
                              :  ($ENV{'form.stuinfo'}) );
     my $total      = scalar(@stuchecked)-1;
     foreach my $student (@stuchecked) {
         my ($sname,$sdom,$fullname) = split(/:/,$student);
         $ENV{'form.student'} = $sname;
         $ENV{'form.fullname'} = $fullname;
         &submission($request,$ctr,$total);
         $ctr++;
     }
   
     return 'The End';
   }
   
   #FIXME - needs to handle multiple matches
 sub finduser {  sub finduser {
   my ($name) = @_;    my ($name) = @_;
       my $domain = '';
   
     if ( $Apache::grades::viewgrades eq 'F' ) {
       #get classlist
   #    my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
       #print "Found $cdom:$cnum<br />";
       my ($classlist) = &getclasslist('all','0');
       foreach my $student ( sort(@{ $$classlist{'all'} }) ) {
         my ($posname,$posdomain) = split(/:/,$student);
         if ($posname =~ $name) { $name=$posname; $domain=$posdomain; last; }
       }
       return ($name,$domain);
     } else {
       return ($ENV{'user.name'},$ENV{'user.domain'});
     }
   }
   
   sub getclasslist {
     my ($getsec,$hideexpired) = @_;
     my ($coursedomain,$coursenum) = split(/_/,$ENV{'request.course.id'});
     my %classlist=&Apache::lonnet::dump('classlist',$coursedomain,$coursenum);
     my $now = time;
     my (@holdsec,@sections);
     foreach my $student (keys(%classlist)) {
       my ($end,$start)=split(/:/,$classlist{$student});
       # still a student?
       if (($hideexpired) && ($end) && ($end < $now)) {
         next;
       }
       my ($unam,$udom) = split(/:/,$student,2);
       my $section = &Apache::lonnet::usection($udom,$unam,$ENV{'request.course.id'});
       push @holdsec,$section;
       push (@{ $classlist{$getsec} }, $student) if ($getsec eq 'all' or $getsec == $section);
     }
     my %seen = ();
     foreach my $item (@holdsec) {
         push (@sections, $item) unless $seen{$item}++;
     }
     return (\%classlist,\@sections);
   }
   
   sub getpartlist {
     my ($url) = @_;
     my @parts =();
     my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
     foreach my $key (@metakeys) {
       if ( $key =~ m/stores_([0-9]+)_.*/) {
         push(@parts,$key);
       }
     }
     return @parts;
   }
   
   sub viewstudentgrade {
     my ($url,$symb,$courseid,$student,@parts) = @_;
     my $result ='';
     my $cellclr = '"#ffffdd"';
     my ($username,$domain) = split(/:/,$student);
   
     my $fullname = &get_fullname($username,$domain);
     my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$username);
   
     $result.="<tr bgcolor=$cellclr><td>$username</td><td>$fullname</td><td align=\"middle\">$domain</td>\n";
     foreach my $part (@parts) {
       my ($temp,$part,$type)=split(/_/,$part);
       my $score=$record{"resource.$part.$type"};
       if ($type eq 'awarded' || $type eq 'tries') {
         $result.='<td align="middle"><input type="text" name="GRADE.'.$student.'.'.$part.'.'.$type.
     '" value="'.$score.'" size="4" /></td>'."\n";
       } elsif ($type eq 'solved') {
         my ($status,$foo)=split(/_/,$score,2);
         $result.="<td align=\"middle\"><select name=\"GRADE.$student.$part.$type\">\n";
         my $optsel = '<option>correct</option><option>incorrect</option><option>excused</option>'.
     '<option>ungraded</option><option>partial</option><option>nothing</option>'."\n";
         $status = 'nothing' if ($status eq '');
         $optsel =~ s/<option>$status/<option selected="on">$status/;
         $result.=$optsel;
         $result.="</select></td>\n";
       }
     }
     $result.='<td></td></tr>';
     return $result;
   }
   
   #FIXME need to look at the metadata <stores> spec on what type of data to accept and provide an
   #interface based on that, also do that to above function.
   sub setstudentgrade {
     my ($url,$symb,$courseid,$student,@parts) = @_;
     print "set student grade parts=@parts<br>";
     my $result ='';
     my ($stuname,$domain) = split(/:/,$student);
     my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
     my %newrecord;
   
     foreach my $part (@parts) {
       my ($temp,$part,$type)=split(/_/,$part);
       my $oldscore=$record{"resource.$part.$type"};
       my $newscore=$ENV{"form.GRADE.$student.$part.$type"};
       print "old=$oldscore:new=$newscore:<br>";
       if ($type eq 'solved') {
         my $update=0;
         if ($newscore eq 'nothing' ) {
    if ($oldscore ne '') {
     $update=1;
     $newscore = '';
    }
         } elsif ($oldscore !~ m/^$newscore/) {
    $update=1;
    $result.="Updating $stuname to $newscore<br />\n";
    if ($newscore eq 'correct')   { $newscore = 'correct_by_override'; }
    if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }
    if ($newscore eq 'excused')   { $newscore = 'excused'; }
    if ($newscore eq 'ungraded')  { $newscore = 'ungraded_attempted'; }
    if ($newscore eq 'partial')   { $newscore = 'correct_partially_by_override'; }
         } else {
    #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";
         }
         if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }
       } else {
         if ($oldscore ne $newscore) {
    $newrecord{"resource.$part.$type"}=$newscore;
    $result.="Updating $student"."'s status for $part.$type to $newscore<br />\n";
         } else {
    #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";
         }
       }
     }
     if ( scalar(keys(%newrecord)) > 0 ) {
       $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
       print "grader=$newrecord{'resource.regrader'}:<br>records<br>";
       while (my ($k,$v) = each %newrecord) {
    print "k=$k:v=$v:<br>\n";
       }
   #    &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);
   
       $result.="Stored away ".scalar(keys(%newrecord))." elements.<br />\n";
     }
     return $result;
 }  }
   
   #
   # --------------------------- show submissions of a student, option to grade --------
 sub submission {  sub submission {
   my ($request) = @_;    my ($request,$counter,$total) = @_;
   
     if ($counter == 0) {
         $request->print(<<JAVASCRIPT);
   <script type="text/javascript" language="javascript">
     function updateRadio(radioButton,formtextbox,formsel,wgt) {
        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;
       }
   
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
    if (pts == i) {
      radioButton[i].checked=true;
    }
       }
       updateSelect(formsel,pts,wgt);
     }
   
     function writeBox(formrad,formsel,pts,wgt) {
       formrad.value = pts;
       updateSelect(formsel,pts,wgt);
       return;
     }
   
     function updateSelect(formsel,pts,wgt) {
       if (pts == 0) {
         formsel[1].selected = true;
       }
       if (pts > 0 && pts < wgt) {
         formsel[4].selected = true;
       }
       if (pts == wgt) {
         formsel[0].selected = true;
       }
       return;
     }
   
   </script>
   JAVASCRIPT
   }
     (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,$udom) = &finduser($ENV{'form.student'});
   if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }    if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }
 #  my $answer=&Apache::lonnet::reply(  
 #    "restore:$udom:$uname:".    my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
 #    $ENV{'request.course.id'}.':'.    if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
 #    &Apache::lonnet::escape($symb),    my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
 #    &Apache::lonnet::homeserver($uname,$udom));  #
   # header info
     if ($counter == 0) {
         $request->print('<h2><font color="#339933">Submission Record</font></h2>');
     }
   
   #
   # 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' && $counter == 0) {
         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">';
         $result.='<b>Student\'s view of the problem</b></td></tr><tr><td bgcolor="#ffffff">'.$rendered.'<br />';
         $result.='<b>Correct answer:</b><br />'.$companswer;
         $result.='</td></tr></table>';
         $result.='</td></tr></table><br />';
         $request->print($result);
     }
   #
   # beginning of form
     if ($counter == 0) {
         $request->print('<form action="/adm/grades" method="post" name="SCORE">'."\n".
         '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
         '<input type="hidden" name="url" value="'.$url.'" />'."\n".
         '<input type="hidden" name="vProb" value="'.$ENV{'form.vProb'}.'" />'."\n".
         '<input type="hidden" name="lastSub" value="'.$last.'" />'."\n".
         '<input type="hidden" name="section" value="'.$ENV{'form.section'}.'">'."\n".
         '<input type="hidden" name="submitonly" value="'.$ENV{'form.submitonly'}.'">'."\n".
         '<input type="hidden" name="command" value="handgrade" />'."\n".
         '<input type="hidden" name="NCT"'.
         ' value="'.($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1').'" />'."\n");
     }
   #
   # Student info
     $request->print(($counter == 0 ? '' : '<br /><hr><br />'));
     my $result.='<table border="0"><tr><td><b>Username: </b>'.$uname.
         '</td><td><b>Fullname: </b>'.
     ($ENV{'form.fullname'} ne '' ? $ENV{'form.fullname'} : &get_fullname($uname,$udom)).
         '</td><td><b>Domain: </b>'.$udom.'</td></tr>';
     $result.='<tr><td colspan=3><b>Resource: </b>'.$url.'</td></tr></table>';
     $request->print($result);
   #
   # print student answer
     my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
      $ENV{'request.course.id'},$last);
     $request->print($answer);
     $answer =~ m/.*<\/tr><tr.*?<td>.*?<td>(.*?)<td>(.*?)<\/td>/;
     print "Submitted=$1:<br>$2;";
   #
     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 ? $wgt : '1');
     my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
     my $score  = ($record{'resource.0.awarded'} eq '' ? '' : $record{'resource.0.awarded'}*$wgt);
   
   #
   # display grading options
     $result='<input type="hidden" name="WGT'.$counter.'" value="'.$wgt.'" />'.
         '<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'.$udom.'" />'."\n";
     $result.='<table border="0"><tr><td><b>Points</b></td><td>';
     my $ctr = 0;
   
     $result.='<table border="0"><tr>';  # display radio buttons in a nice table with 10 across
     while ($ctr<=$wgt) {
         $result.= '<td><input type="radio" name="RADVAL'.$counter.'" '.
     'onclick="javascript:writeBox(this.form.GRADE_BOX'.$counter.
       ',this.form.GRADE_SEL'.$counter.','.$ctr.','.$wgt.')" '.
    ($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>';
     $result.='<td><input type="text" name="GRADE_BOX'.$counter.'"'.
         ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
          'onChange="javascript:updateRadio(this.form.RADVAL'.$counter.
           ',this.form.GRADE_BOX'.$counter.
      ',this.form.GRADE_SEL'.$counter.',\''.$wgt.'\')" /></td>'."\n";
     $result.='<td>/'.$wgt.' '.$wgtmsg.' </td><td>';
   
     foreach my $part (&getpartlist($url)) {
       my ($temp,$part,$type)=split(/_/,$part);
       if ($type eq 'solved') {
         my ($status,$foo)=split(/_/,$record{"resource.$part.$type"},2);
         $status = 'partial' if ($foo =~ /partially/);
         $status = 'nothing' if ($status eq '');
         $result.='<select name="GRADE_SEL'.$counter.'">'."\n";
         my $optsel = '<option>correct</option><option>incorrect</option>'.
     '<option>excused</option><option>ungraded</option>'.
         '<option>partial</option><option>nothing</option>'."\n";
         $optsel =~ s/<option>$status/<option selected="on">$status/;
         $result.=$optsel;
         $result.="</select></td></tr>\n";
       }
     }
     $result.='</table>';
     $request->print($result);
   #
   # 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;';
         $endform.='<input type="submit" name="gradeOpt" value="Next" />&nbsp';
         $endform.='<input type="submit" name="gradeOpt" value="Previous" />&nbsp';
         $endform.='(Next and Previous do not save the scores.)';
         $endform.='</td><tr></table></form>';
         $request->print($endform);
     }
     return '';
   }
   
   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'};
   #  my $vProb  = $ENV{'form.vProb'};
   #  my $lastSub= $ENV{'form.lastSub'};
   
     my (@parts) = sort(&getpartlist($url));
   
     if ($button eq 'Save & Next') {
         my $ctr = 0;
         while ($ctr < $ENV{'form.NCT'}) {
   #  my $pts    = ($ENV{'form.GRADE_BOX'.$ctr} ne '' ? $ENV{'form.GRADE_BOX'.$ctr} : $ENV{'form.RADVAL'.$ctr});
   #  my $wgt    = $ENV{'form.WGT'.$ctr};
   #  my $sel    = $ENV{'form.GRADE_SEL'.$ctr};
   #  my $score  = $pts/$wgt if ($wgt != 0);
     my ($uname,$udom) = split(/:/,$ENV{'form.unamedom'.$ctr});
     &saveHandGrade($url,$symb,$uname,$udom,$ctr,@parts);
   #  &saveHandGrade($url,$symb,$uname,$udom,$score,@parts);
     $ctr++;
         }
     }
     my $firststu = $ENV{'form.unamedom0'};
     my $laststu  = $ENV{'form.unamedom'.($ngrade-1)};
   
     #get classlist
   #  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
     my ($classlist) = &getclasslist('all','0');
   
     my (@nextlist,@prevlist);
     my ($nextflg,$prevflg,$ctr,$ctprev) = (0,0,0,0);
     foreach my $student ( sort(@{ $$classlist{'all'} }) ) {
         my ($uname,$udom) = split(/:/,$student);
         if ($nextflg == 1 && $button =~ /Next$/) {
     push @nextlist,$uname if ($ctr < $ntstu);
     $ctr++;
         }
         $nextflg = 1 if ($student eq $laststu);
         $prevflg = 1 if ($student eq $firststu);
         if ($prevflg == 0 && $button eq 'Previous') {
     push @prevlist,$uname;
     $ctprev++;
         }
     }
     if ($button eq 'Previous') {
         if ($ctprev <= $ntstu) {
     @nextlist = @prevlist;
         } else {
     my $idx = 0;
     my $start = $ctprev - $ntstu;
     while ($idx < $ntstu) {
         $nextlist[$idx] = $prevlist[$start+$idx];
         $idx++;
     }
         }
     }
     $ctr = 0;
     my $total = scalar(@nextlist)-1;
     foreach my $student (@nextlist) {
         $ENV{'form.student'} = $student;
         &submission($request,$ctr,$total);
         $ctr++;
     }
   
     return 'The End';
   }
   
   sub saveHandGrade {
     my ($url,$symb,$stuname,$domain,$newflg,@parts) = @_;
   #  my ($stuname,$domain) = split(/:/,$student);
     my %record=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},$domain,$stuname);
     my %newrecord;
   
     foreach my $part (@parts) {
       my ($temp,$part,$type)=split(/_/,$part);
       my $oldscore=$record{"resource.$part.$type"};
       my $newscore;
       if ($type eq 'awarded' && $newflg >= 0) {
    my $pts    = ($ENV{'form.GRADE_BOX'.$newflg} ne '' ? $ENV{'form.GRADE_BOX'.$newflg} : $ENV{'form.RADVAL'.$newflg});
    my $wgt    = $ENV{'form.WGT'.$newflg};
   # my $sel    = $ENV{'form.GRADE_SEL'.$newflg};
    $newscore  = $pts/$wgt if ($wgt != 0);
       }
       if ($type eq 'solved') {
         $newscore = $ENV{'form.GRADE_SEL'.$newflg} if ($newflg >= 0);
         my $update=0;
         if ($newscore eq 'nothing' ) {
    if ($oldscore ne '') {
     $update=1;
     $newscore = '';
    }
         } elsif ($oldscore !~ m/^$newscore/) {
    $update=1;
    if ($newscore eq 'correct')   { $newscore = 'correct_by_override'; }
    if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }
    if ($newscore eq 'excused')   { $newscore = 'excused'; }
    if ($newscore eq 'ungraded')  { $newscore = 'ungraded_attempted'; }
    if ($newscore eq 'partial')   { $newscore = 'correct_partially_by_override'; }
         }
         if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }
       } else {
         if ($oldscore ne $newscore) {
    $newrecord{"resource.$part.$type"}=$newscore;
         }
       }
     }
     if ( scalar(keys(%newrecord)) > 0 ) {
         $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
         while (my ($k,$v) = each %newrecord) {
    print "k=$k:v=$v:<br>\n";
         }
         print "symb=$symb,courseid=$ENV{'request.course.id'},dom=$domain,name=$stuname<br>";
   #     &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},$domain,$stuname);
     }
     return '';
   }
   
   sub get_symb_and_url {
     my ($request) = @_;
     (my $url=$ENV{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
     my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
     if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
     return ($symb,$url);
   }
   
   sub 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;
   }
   
   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>';
     $result.='&nbsp;<font size=+1><b>Resource: </b>'.$url.'</font><br /><br />';
   
     $result.=&view_edit_entire_class_form($symb,$url).'<br />';
     $result.=&upcsvScores_form($symb,$url).'<br />';
     $result.=&viewGradeaStu_form($symb,$url).'<br />';
     $result.=&verifyReceipt_form($symb,$url);
     return $result;
   }
   
   sub view_edit_entire_class_form {
     my ($symb,$url)=@_;
     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 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>Display students who has: </b>'.
         '<input type="radio" name="submitonly" value="yes" checked> submitted'.
     '<input type="radio" name="submitonly" value="all"> everybody <br /><br />';
     $result.='&nbsp;<input type="submit" name="submit" value="View/Grade" /></form>'."\n";
     $result.='</td></tr></table>'."\n";
     $result.='</td></tr></table>'."\n";
     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;
   }
   
   sub viewGradeaStu_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 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="command" value="submission" />'."\n";
   
     $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";
     foreach my $section (sort (@$sections)) {
         $result.= '<option>'.$section.'</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 />';
     $result.='&nbsp;(Section -1 implies the students were not assigned a section.)<br />' if (grep /-1/,@$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;
   }
   
   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 viewgrades {
     my ($request) = @_;
     my $result='';
   
     #get resource reference
     my ($symb,$url)=&get_symb_and_url($request);
     if (!$symb) {return '';}
     #get classlist
     my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
     #print "Found $cdom:$cnum<br />";
     my ($classlist) = &getclasslist('all','0');
     my $headerclr = '"#ccffff"';
     my $cellclr = '"#ffffcc"';
   
     #get list of parts for this problem
     my (@parts) = sort(&getpartlist($url));
   
     $request->print ("<h2><font color=\"#339933\">Manual Grading</font></h2>");
   
     #start the form
     $result = '<form action="/adm/grades" method="post">'."\n".
       '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
         '<input type="hidden" name="url" value="'.$url.'" />'."\n".
    '<input type="hidden" name="command" value="editgrades" />'."\n".
     '<input type="submit" name="submit" value="Submit Changes" />'."\n".
       '<table border=0><tr><td bgcolor="#777777">'."\n".
        '<table border=0>'."\n".
         '<tr bgcolor='.$headerclr.'><td><b>Username</b></td><td><b>Name</b></td><td><b>Domain</b></td>'."\n";
     foreach my $part (@parts) {
        my $display=&Apache::lonnet::metadata($url,$part.'.display');
        if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
        $result.='<td><b>'.$display.'</b></td>'."\n";
     }
     $result.='</tr>';
     #get info for each student
     foreach my $student ( sort(@{ $$classlist{'all'} }) ) {
       my $display=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
   #      print "ID=$ENV{'request.course.id'}:STU=$student:DIS=$display:<br>\n";
       $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
     }
     $result.='</table></td></tr></table>';
     $result.='<input type="submit" name="submit" value="Submit Changes" /></form>';
     $result.=&show_grading_menu_form($symb,$url);
     return $result;
   }
   
   sub editgrades {
     my ($request) = @_;
     my $result='';
   
     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'};
     #get classlist
   #  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
     #print "Found $cdom:$cnum<br />";
     my ($classlist) = &getclasslist('all','0');
   
     #get list of parts for this problem
     my (@parts) = &getpartlist($url);
   
     $result.='<form action="/adm/grades" method="post">'."\n".
       '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
         '<input type="hidden" name="url" value="'.$url.'" />'."\n".
    '<input type="hidden" name="command" value="viewgrades" />'."\n".
     '<input type="submit" name="submit" value="See Grades" /> <br />'."\n";
   
     foreach my $student ( sort(@{ $$classlist{'all   '} }) ) {
       $result.=&setstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
     }
   
     $result.='<input type="submit" name="submit" value="See Grades" /></table></form>';
     return $result;
   }
   
   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;
     my $keyfields;
     if (@records) {
       my @fields=&csvupload_fields($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 '';    return '';
 }  }
   
 sub send_header {  sub send_header {
   my ($request)= @_;    my ($request)= @_;
   $request->print(&Apache::lontexconvert::header());    $request->print(&Apache::lontexconvert::header());
   #  $request->print("
   #<script>
   #remotewindow=open('','homeworkremote');
   #remotewindow.close();
   #</script>"); 
   $request->print('<body bgcolor="#FFFFFF">');    $request->print('<body bgcolor="#FFFFFF">');
 }  }
   
Line 57  sub send_footer { Line 1098  sub send_footer {
 sub handler {  sub handler {
   my $request=$_[0];    my $request=$_[0];
   
   if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}  
     
   if ($ENV{'browser.mathml'}) {    if ($ENV{'browser.mathml'}) {
     $request->content_type('text/xml');      $request->content_type('text/xml');
   } else {    } else {
Line 66  sub handler { Line 1105  sub handler {
   }    }
   $request->send_http_header;    $request->send_http_header;
   return OK if $request->header_only;    return OK if $request->header_only;
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
   my $url=$ENV{'form.url'};    my $url=$ENV{'form.url'};
     my $symb=$ENV{'form.symb'};
   my $command=$ENV{'form.command'};    my $command=$ENV{'form.command'};
       if (!$url) {
       my ($temp1,$temp2);
       ($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);
       $url = $ENV{'form.url'};
     }
   &send_header($request);    &send_header($request);
   if ($url eq '') {    if ($url eq '' && $symb eq '') {
     $request->print("Non-Contextual Access Unsupported:$command:$url:");       if ($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 {
                      $request->print('<h1>Not authorized: '.$token.'</h1>');
                   }           
       } else {
                   $request->print('<h1>Not a valid DocID: '.$token.'</h1>');
               }
    } else {
                $request->print(&Apache::lonxml::tokeninputfield());
            }
        }
   } else {    } else {
     $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$url);      #&Apache::lonhomework::showhashsubset(\%ENV,'^form');
       $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
     if ($command eq 'submission') {      if ($command eq 'submission') {
       &submission($request);        &listStudents($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 'csvuploadmap') {
         $request->print(&csvuploadmap($request));
   #    } elsif ($command eq 'receiptInput') {
   #      &receiptInput($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 {      } else {
       $request->print("Unknown action:$command:");        $request->print("Unknown action: $command:");
     }      }
   }    }
   &send_footer($request);    &send_footer($request);
Removed from v.1.2  
changed lines
  Added in v.1.34

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