File:  [LON-CAPA] / loncom / homework / grades.pm
Revision 1.56: download - view: text, annotated - select for diffs
Wed Oct 16 19:23:48 2002 UTC (21 years, 5 months ago) by matthew
Branches: MAIN
CVS tags: HEAD
Rewrote &getclasslist to use loncoursedata::get_classlist() and changed its
return values since most were not used.
Removed &reformat_classlist as this functionality is in
loncoursedata::get_classlist().
Modified all calls to &getclasslist to reflect new return values and to
only bother keeping the values they need (assigning unused return values
to undef).

# The LearningOnline Network with CAPA
# The LON-CAPA Grading handler
#
# $Id: grades.pm,v 1.56 2002/10/16 19:23:48 matthew Exp $
#
# 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-August H.K. Ng
#

package Apache::grades;
use strict;
use Apache::style;
use Apache::lonxml;
use Apache::lonnet;
use Apache::loncommon;
use Apache::lonhomework;
use Apache::loncoursedata;
use Apache::lonmsg qw(:user_normal_msg);
use Apache::Constants qw(:common);

# ----- These first few routines are general use routines.-----
#
# --- Retrieve the parts that matches stores_\d+ from the metadata file.---
sub getpartlist {
    my ($url) = @_;
    my @parts =();
    my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
    foreach my $key (@metakeys) {
	if ( $key =~ m/stores_(\w+)_.*/) {
	    push(@parts,$key);
	}
    }
    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);
}

# --- Retrieve the fullname for a user. Return lastname, first middle ---
# --- Generation is attached next to the lastname if it exists. ---
sub get_fullname {
    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) {
        $fullname = &Apache::loncoursedata::ProcessFullName
            (@name{qw/lastname generation firstname middlename/});
    } else {
        &Apache::lonnet::logthis('grades.pm: no name data for '.$uname.
                                 '@'.$udom.':'.$tmp);
    }
    return $fullname;
}

#--- Get the partlist and the response type for a given problem. ---
#--- Indicate if a response type is coded handgraded or not. ---
sub response_type {
    my ($url) = shift;
    my $allkeys = &Apache::lonnet::metadata($url,'keys');
    my %seen = ();
    my (@partlist,%handgrade);
    foreach (split(/,/,&Apache::lonnet::metadata($url,'packages'))) {
	if (/^\w+response_\w+.*/) {
	    my ($responsetype,$part) = split(/_/,$_,2);
	    my ($partid,$respid) = split(/_/,$part);
	    $handgrade{$part} = $responsetype.':'.($allkeys =~ /parameter_$part\_handgrade/ ? 'yes' : 'no');
	    next if ($seen{$partid} > 0);
	    $seen{$partid}++;
	    push @partlist,$partid;
	}
    }
    return \@partlist,\%handgrade;
}

#--- Dumps the class list with usernames,list of sections,
#--- section, ids and fullnames for each user.
sub getclasslist {
    my ($getsec,$hideexpired) = @_;
    my $classlist=&Apache::loncoursedata::get_classlist();
    # Bail out if we were unable to get the classlist
    return if (! defined($classlist));
    #
    my %sections;
    my %fullnames;
    foreach (keys(%$classlist)) {
        # the following undefs are for 'domain', and 'username' respectively.
	my (undef,undef,$end,$start,$id,$section,$fullname,$status)=
            @{$classlist->{$_}};
	# still a student?
	if (($hideexpired) && ($status ne 'Active')) {
            delete ($classlist->{$_});
            next;
        }
	$section = ($section ne '' ? $section : 'no');
	if ($getsec eq 'all' || $getsec eq $section) {
            $sections{$section}++;
            $fullnames{$_}=$fullname;
        } else {
            delete($classlist->{$_});
        }
    }
    my %seen = ();
    my @sections = sort(keys(%sections));
    return ($classlist,\@sections,\%fullnames);
}

#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'});
    }
}

#--- Prompts a user to enter a username.
sub moreinfo {
    my ($request,$reason) = @_;
    $request->print("Unable to process request: $reason");
    if ( $Apache::grades::viewgrades eq 'F' ) {
	$request->print('<form action="/adm/grades" method="post">'."\n");
	if ($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");
	}
	$request->print('<input type="hidden" name="command" value="'.$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 '';
}

#--- Retrieve the grade status of a student for all the parts
sub student_gradeStatus {
    my ($url,$symb,$udom,$uname,$partlist) = @_;
    my %record     = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
    my %partstatus = ();
    foreach (@$partlist) {
	my ($status,$foo)    = split(/_/,$record{"resource.$_.solved"},2);
	$status              = 'nothing' if ($status eq '');
	$partstatus{$_}      = $status;
	my $subkey           = "resource.$_.submitted_by";
	$partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
    }
    return %partstatus;
}

# hidden form and javascript that calls the form
# Use by verifyscript and viewgrades
# Shows a student's view of problem and submission
sub jscriptNform {
    my ($url,$symb) = @_;
    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";
    return $jscript;
}

#------------------ End of general use routines --------------------
#-------------------------------------------------------------------

#------------------------------------ Receipt Verification Routines
#
#--- Check whether a receipt number is valid.---
sub verifyreceipt {
    my $request  = shift;

    my $courseid = $ENV{'request.course.id'};
    my $receipt  = unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.
	$ENV{'form.receipt'};
    $receipt     =~ s/[^\-\d]//g;
    my $url      = $ENV{'form.url'};
    my $symb     = $ENV{'form.symb'};
    unless ($symb) {
	$symb    = &Apache::lonnet::symbread($url);
    }

    my $title.='<h3><font color="#339933">Verifying Submission Receipt '.
	$receipt.'</h3></font>'."\n".
	'<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font><br><br>'."\n";

    my ($string,$contents,$matches) = ('','',0);
    my (undef,undef,$fullname) = &getclasslist('all','0');

    foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
	my ($uname,$udom)=split(/\:/);
	if ($receipt eq 
	    &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb)) {
	    $contents.='<tr bgcolor="#ffffe6"><td>&nbsp;'."\n".
		'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
		'\')"; TARGET=_self>'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
		'<td>&nbsp;'.$uname.'&nbsp;</td>'.
		'<td>&nbsp;'.$udom.'&nbsp;</td></tr>'."\n";
	    
	    $matches++;
	}
    }
    if ($matches == 0) {
	$string = $title.'No match found for the above receipt.';
    } else {
	$string = &jscriptNform($url,$symb).$title.
	    'The above receipt matches the following student'.
	    ($matches <= 1 ? '.' : 's.')."\n".
	    '<table border="0"><tr><td bgcolor="#777777">'."\n".
	    '<table border="0"><tr bgcolor="#e6ffff">'."\n".
	    '<td><b>&nbsp;Fullname&nbsp;</b></td>'."\n".
	    '<td><b>&nbsp;Username&nbsp;</b></td>'."\n".
	    '<td><b>&nbsp;Domain&nbsp;</b></td></tr>'."\n".
	    $contents.
	    '</table></td></tr></table>'."\n";
    }
    return $string.&show_grading_menu_form($symb,$url);
}

#--- This is called by a number of programs.
#--- Called from the Grading Menu - View/Grade an individual student
#--- Also called directly when one clicks on the subm button 
#    on the problem page.
sub listStudents {
    my ($request) = shift;

    my ($symb,$url) = &get_symb_and_url();
    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 $result;
    my ($partlist,$handgrade) = &response_type($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>';

    my $viewgrade;
    if ($ENV{'form.handgrade'} eq 'yes') {
	$viewgrade = 'View/Grade';
    } else {
	$viewgrade = 'View';
    }

    $result='<h3><font color="#339933">&nbsp;'.
	$viewgrade.
	    ' Submissions for a Student or a Group of Students</font></h3>'.
		'<table border="0"><tr><td colspan=3><font size=+1>'.
		    '<b>Resource: </b>'.$url.'</font></td></tr>'.$result;

    $request->print(<<LISTJAVASCRIPT);
<script type="text/javascript" language="javascript">
  function checkSelect(checkBox) {
    var ctr=0;
    var sense="";
    if (checkBox.length > 1) {
       for (var i=0; i<checkBox.length; i++) {
	  if (checkBox[i].checked) {
	     ctr++;
	  }
       }
       sense = "a student or group of students";
    } else {
       if (checkBox.checked) {
	   ctr = 1;
       }
       sense = "the student";
    }
    if (ctr == 0) {
       alert("Please select "+sense+" before clicking on the $viewgrade button.");
       return false;
    }
    document.gradesub.submit();
  }
</script>
LISTJAVASCRIPT

    $request->print($result);

    my $checkhdgrade = $ENV{'form.handgrade'} eq 'yes' ? 'checked' : '';
    my $checklastsub = $ENV{'form.handgrade'} eq 'yes' ? '' : 'checked';

    my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'."\n".
	'&nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" checked> no '."\n".
	'<input type="radio" name="vProb" value="yes"> yes <br />'."\n".
	'&nbsp;<b>Submissions: </b>'."\n";
    if ($ENV{'form.handgrade'} eq 'yes') {
	$gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> handgrade only'."\n";
    }
    $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last sub only'."\n".
	'<input type="radio" name="lastSub" value="last" /> last sub & parts info'."\n".
	'<input type="radio" name="lastSub" value="all" /> all details'."\n".
	'<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
	'<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
	'<input type="hidden" name="response"    value="'.$ENV{'form.response'}.'" />'."\n".
	'<input type="hidden" name="handgrade"   value="'.$ENV{'form.handgrade'}.'" /><br />'."\n".
	'<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" /><br />'."\n".
	'<input type="hidden" name="url"  value="'.$url.'" />'."\n".
	'<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
	'To '.lc($viewgrade).' a submission, click on the check box next to the student\'s name. Then '."\n".
	'click on the '.$viewgrade.' button. To view the submissions for a group of students, click'."\n".
	' on the check boxes for the group of students.<br />'."\n".
	'<input type="hidden" name="command" value="processGroup" />'."\n".
	'<input type="button" '."\n".
	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
	'value="'.$viewgrade.'" />'."\n";
 
    my (undef,undef,$fullname) = &getclasslist($getsec,'0');
    
    $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
	'<table border="0"><tr bgcolor="#e6ffff">'.
	'<td><b>&nbsp;Select&nbsp;</b></td><td><b>&nbsp;Fullname&nbsp;</b></td>'.
	'<td><b>&nbsp;Username&nbsp;</b></td><td><b>&nbsp;Domain&nbsp;</b></td>';
    foreach (sort(@$partlist)) {
	$gradeTable.='<td><b>&nbsp;Part '.(split(/_/))[0].' Status&nbsp;</b></td>';
    }
    $gradeTable.='</tr>'."\n";

    my $ctr = 0;
    foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
	my ($uname,$udom) = split(/:/,$student);
	my (%status) =&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
	my $statusflg = '';
	foreach (keys(%status)) {
	    $statusflg = 1 if ($status{$_} ne 'nothing');
	    my ($foo,$partid,$foo1) = split(/\./,$_);
	    if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
		$statusflg = '';
		$gradeTable.='<input type="hidden" name="'.
		    $student.':submitted_by" value="'.
		    $status{'resource.'.$partid.'.submitted_by'}.'" />';
	    }
	}
	next if ($statusflg eq '' && $submitonly eq 'yes');

	$ctr++;
	if ( $Apache::grades::viewgrades eq 'F' ) {
	    $gradeTable.='<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$/);
		$gradeTable.='<td align="middle">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
	    }
	    $gradeTable.='</tr>'."\n";
	}
    }
    $gradeTable.='</table></td></tr></table>'.
	'<input type="button" '.
	'onClick="javascript:checkSelect(this.form.stuinfo);" '.
	'value="'.$viewgrade.'" /></form>'."\n";
    if ($ctr == 0) {
	$gradeTable='<br />&nbsp;<font color="red">'.
	    'No submission found for this resource.</font><br />';
    } elsif ($ctr == 1) {
	$gradeTable =~ s/type=checkbox/type=checkbox checked/;
    }
    $gradeTable.=&show_grading_menu_form($symb,$url);
    $request->print($gradeTable);
    return '';
}

#---- Called from the listStudents routine
#     Displays the submissions for one student or a group of students
sub processGroup {
    my ($request)  = shift;
    my $ctr        = 0;
    my @stuchecked = (ref($ENV{'form.stuinfo'}) ? @{$ENV{'form.stuinfo'}}
		      : ($ENV{'form.stuinfo'}));
    my $total      = scalar(@stuchecked)-1;

    foreach (@stuchecked) {
	my ($uname,$udom,$fullname) = split(/:/);
	$ENV{'form.student'}        = $uname;
	$ENV{'form.userdom'}        = $udom;
	$ENV{'form.fullname'}       = $fullname;
	&submission($request,$ctr,$total);
	$ctr++;
    }
    return '';
}

#------------------------------------------------------------------------------------
#
#-------------------------- Next few routines handles grading by student, essentially
#                           handles essay response type problem/part
#
#--- Javascript to handle the submission page functionality ---
sub sub_page_js {
    my $request = shift;
    $request->print(<<SUBJAVASCRIPT);
<script type="text/javascript" language="javascript">
  function updateRadio(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";
  }

  function writeBox(formrad,formsel,pts,scores) {
    formrad.value = pts;
    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;
  }

//=================== Check that a point is assigned for all the parts  ==============
  function checksubmit(val,total,parttot) {
     document.SCORE.gradeOpt.value = val;
     if (val == "Save & Next") {
	for (i=0;i<=total;i++) {
	   for (j=0;j<parttot;j++) {
	      var partid = eval("document.SCORE.partid"+i+"_"+j+".value");
	      var selopt = eval("document.SCORE.GD_SEL"+i+"_"+partid);
	      if (selopt[0].selected) {
		 var points = eval("document.SCORE.GD_BOX"+i+"_"+partid+".value");
		 if (points == "") {
		     var name = eval("document.SCORE.name"+i+".value");
		     alert("Please assign a score for "+name+", part "+partid+".");
		     return false;
		 }
	      }

	  }
       }

     }
     document.SCORE.submit();
 }

//===================== 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("Please select a word or group of words from document and then click this link.");
	return;
    }
    var nret = prompt("Add selection to keyword list? Edit if desired.",cleantxt);
    if (nret==null) return;
    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;
  }

  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 {
    my ($request,$counter,$total) = @_;

    (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 ''; }
    my ($uname,$udom)     = ($ENV{'form.student'},$ENV{'form.userdom'});
    ($uname,$udom)        = &finduser($uname) if $udom eq '';
    $ENV{'form.fullname'} = &get_fullname ($uname,$udom) if $ENV{'form.fullname'} eq '';
#    if ($uname eq '') { &moreinfo($request,'Unable to find student'); return ''; }

    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 ''; }
    my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
    $ENV{'form.vProb'} = $ENV{'form.vProb'} ne '' ? $ENV{'form.vProb'} : 'yes';

    # header info
    if ($counter == 0) {
	&sub_page_js($request);
	$request->print('<h3>&nbsp;<font color="#339933">Submission Record</font></h3>'."\n".
			'<font size=+1>&nbsp;<b>Resource: </b>'.$url.'</font>'."\n");

	# 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">';
	    $result.='<b> View of the problem - '.$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">'."\n".
	'<table border="0" width=100%><tr bgcolor="#edffff"><td>'."\n";

    $result.='<b>Fullname: </b>'.$ENV{'form.fullname'}.
	'<font color="#999999">&nbsp; &nbsp;Username: '.$uname.'</font>'.
	'<font color="#999999">&nbsp; &nbsp;Domain: '.$udom.'</font><br />'."\n";
    $result.='<input type="hidden" name="name'.$counter.
	'" value="'.$ENV{'form.fullname'}.'" />'."\n";

    # If this is handgraded, then check for collaborators
    my @col_fullnames;
    my ($classlist,$fullname);
    if ($ENV{'form.handgrade'} eq 'yes') {
	my @col_list;
	($classlist,undef,$fullname) = &getclasslist('all','0');
	for (keys (%$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;
			    }
			    push @col_list, $collaborator;
			    my ($lastname,$givenn) = split(/,/,$$fullname{$collaborator.':'.$udom});
			    push @col_fullnames, $givenn.' '.$lastname;
			    $result.=$$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>'.
		$$fullname{$ENV{'form.'.$uname.':'.$udom.':submitted_by'}}.'</a>';
	    $request->print($submitby);
	} else {
	    my ($string,$timestamp)=
		&get_last_submission (%record);
	    my $lastsubonly.=''.
		($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
		 $$timestamp).'';
	    if ($$timestamp eq '') {
		$lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0].'</td></tr>'."\n";
	    } else {
		for my $part (sort keys(%$handgrade)) {
		    foreach (@$string) {
			my ($partid,$respid) = /^resource\.(\d+)\.(\d+)\.submission/;
			if ($part eq ($partid.'_'.$respid)) {
			    my ($ressub,$subval) = split(/:/,$_,2);
			    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
				$partid.'</b> <font color="#999999">( ID '.$respid.
				' )</font>&nbsp; &nbsp;<b>Answer: </b>'.
				&keywords_highlight($subval).'</td></tr>'."\n"
				if ($ENV{'form.lastSub'} eq 'lastonly' || 
				    ($ENV{'form.lastSub'} eq 'hdgrade' && 
				     $$handgrade{$part} =~ /:yes$/));
			}
		    }
		}
	    }
	    $lastsubonly.='</td></tr>'."\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>'."\n");
	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";
    my ($lastname,$givenn) = split(/,/,$ENV{'form.fullname'});
    my $msgfor = $givenn.' '.$lastname;
    if (scalar(@col_fullnames) > 0) {
	my $lastone = pop @col_fullnames;
	$msgfor .= ', '.(join ', ',@col_fullnames).' and '.$lastone.'.';
    }
    $result.='<tr><td bgcolor="#ffffff">'."\n".
	'&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
	',\''.$msgfor.'\')"; TARGET=_self>'.
	'Compose Message to student'.(scalar(@col_fullnames) >= 1 ? 's' : '').'</a>'.
	'<br />&nbsp;(Message will be sent when you click on Save & Next below.)'."\n" 
	if ($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>'."\n";
	$request->print($result);
    }
    $result='<input type="hidden" name="partlist'.$counter.
	'" value="'.(join ":",@partlist).'" />'."\n";
    my $ctr = 0;
    while ($ctr < scalar(@partlist)) {
	$result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
	    $partlist[$ctr].'" />'."\n";
	$ctr++;
    }
    $request->print($result.'</td></tr></table></td></tr></table>'."\n");

    # print end of form
    if ($counter == $total) {
	my $endform='<table border="0"><tr><td>'.
	    '<input type="hidden" name="gradeOpt" value="" />'."\n";
	if ($ENV{'form.handgrade'} eq 'yes') {
	    $endform.='<input type="button" value="Save & Next" '.
		'onClick="javascript:checksubmit(\'Save & Next\','.
		$total.','.scalar(@partlist).');" TARGET=_self> &nbsp;'."\n";
	    my $ntstu ='<select name="NTSTU">'.
		'<option>1</option><option>2</option>'.
		'<option>3</option><option>5</option>'.
		'<option>7</option><option>10</option></select>'."\n";
	    my $nsel = ($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1');
	    $ntstu =~ s/<option>$nsel</<option selected="on">$nsel</;
	    $endform.=$ntstu.'student(s) &nbsp;&nbsp;';
	} else {
	    $endform.='<input type="hidden" name="NTSTU" value="1" />'."\n";
	}
	$endform.='<input type="button" value="Next" '.
	    'onClick="javascript:checksubmit(\'Next\');" TARGET=_self> &nbsp;'."\n".
	    '<input type="button" value="Previous" '.
	    'onClick="javascript:checksubmit(\'Previous\');" TARGET=_self> &nbsp;';
	$endform.='(Next and Previous do not save the scores.)'."\n" 
	    if ($ENV{'form.handgrade'} eq 'yes');
	$endform.='</td><tr></table></form>';
	$endform.=&show_grading_menu_form($symb,$url);
	$request->print($endform);
    }
    return '';
}

#--- Retrieve the last submission for all the parts
sub get_last_submission {
    my (%returnhash)=@_;
    my (@string,$timestamp);
    if ($returnhash{'version'}) {
	my %lasthash=();
	my ($version);
	for ($version=1;$version<=$returnhash{'version'};$version++) {
	    foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
		$lasthash{$_}=$returnhash{$version.':'.$_};
		if ($returnhash{$version.':'.$_} =~ /(SUBMITTED|DRAFT)$/) {
		   $timestamp = scalar(localtime($returnhash{$version.':timestamp'}));
	       } 
	    }
	}
	foreach ((keys %lasthash)) {
	    if ($_ =~ /\.submission$/) {
		my ($partid,$foo) = split(/submission$/,$_);
		my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
		    '<font color="red">Draft Copy</font> ' : '';
		push @string, (join(':',$_,$draft.$lasthash{$_}));
	    }
	}
    }
    @string = $string[0] eq '' ? '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'.$ctr});
	    my ($errorflag) = &saveHandGrade($request,$url,$symb,$uname,$udom,$ctr);

	    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 (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');
    my (@parsedlist,@nextlist);
    my ($nextflg) = 0;
    foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
	if ($nextflg == 1 && $button =~ /Next$/) {
	    push @parsedlist,$_;
	}
	$nextflg = 1 if ($_ eq $laststu);
	if ($button eq 'Previous') {
	    last if ($_ eq $firststu);
	    push @parsedlist,$_;
	}
    }
    $ctr = 0;
    my ($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.'_'.$_});
	    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 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+"_awarded");
	    var saveval   = eval("document.classgrade.GD_"+user+
				 "_"+partid+"_solved_s.value");
	    var selname   = eval("document.classgrade.GD_"+user+"_"+partid+"_solved");
	    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+"_awarded");
		var saveval   = eval("document.classgrade.GD_"+user+
				     "_"+partid+"_solved_s.value");
		var selname   = eval("document.classgrade.GD_"+user+
				     "_"+partid+"_solved");
		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+"_awarded");
		var saveval   = eval("document.classgrade.GD_"+user+
				     "_"+partid+"_solved_s.value");
		var selname   = eval("document.classgrade.GD_"+user+
				     "_"+partid+"_solved");
		if (saveval != "correct") {
		    scorename.value = eval("document.classgrade.GD_"+user+
				     "_"+partid+"_awarded_s.value");;
		    selname[0].selected = true;
		}
	    }
	}	    
    }

    function changeSelect(partid,user) {
	var selval = eval("document.classgrade.GD_"+user+'_'+partid+"_solved");
	var textbox = eval("document.classgrade.GD_"+user+'_'+partid+"_awarded");
	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+"_solved");
	if (selval[1].selected) {
	    var boxval = eval("document.classgrade.GD_"+user+'_'+partid+"_awarded");
	    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+"_awarded");
		resetscore.value = eval("document.classgrade.GD_"+user+
					"_"+partid+"_awarded_s.value");

		var saveselval   = eval("document.classgrade.GD_"+user+
				     "_"+partid+"_solved_s.value");

		var selname   = eval("document.classgrade.GD_"+user+"_"+partid+"_solved");
		if (saveselval == "excused") {
		    if (selname[1].selected == false) { selname[1].selected = true;}
		} else {
		    if (selname[0].selected == false) {selname[0].selected = true};
		}
	    }
	}
    }

</script>
VIEWJAVASCRIPT
}

#--- show scores for a section or whole class w/ option to change/update a score
sub viewgrades {
    my ($request) = shift;
    &viewgrades_js($request);

    my ($symb,$url) = ($ENV{'form.symb'},$ENV{'form.url'}); 
    my $result='<h3><font color="#339933">Manual Grading</font></h3>';

    $result.='<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font>'."\n";

    #view individual student submission form - called using Javascript viewOneStudent
    $result.=&jscriptNform($url,$symb);

    #beginning of class grading form
    $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
	'<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
	'<input type="hidden" name="url"     value="'.$url.'" />'."\n".
	'<input type="hidden" name="command" value="editgrades" />'."\n".
	'<input type="hidden" name="section" value="'.$ENV{'form.section'}.'" />'."\n";
    $result.='<h3>Assign Common Grade To ';
    if ($ENV{'form.section'} eq 'all') {
	$result.='Class </h3>';
    } elsif ($ENV{'form.section'} eq 'no') {
	$result.='Students in no Section </h3>';
    } else {
	$result.='Students in Section '.$ENV{'form.section'}.'</h3>';
    }
    $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
	'<table border=0><tr bgcolor="#ffffdd"><td>';
#    $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>';
#    $result.='</td></tr><tr><td>';
    #radio buttons/text box for assigning points for a section or class.
    #handles different parts of a problem
    my ($partlist,$handgrade) = &response_type($ENV{'form.url'});
    my %weight = ();
    my $ctsparts = 0;
    $result.='<table border="0">';
    my %seen = ();
    for (sort keys(%$handgrade)) {
	my ($partid,$respid) = split (/_/,$_,2);
	next if $seen{$partid};
	$seen{$partid}++;
	my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
	my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
	$weight{$partid} = $wgt eq '' ? '1' : $wgt;

	$result.='<input type="hidden" name="partid_'.
	    $ctsparts.'" value="'.$partid.'" />'."\n";
	$result.='<input type="hidden" name="weight_'.
	    $partid.'" value="'.$weight{$partid}.'" />'."\n";
	$result.='<tr><td><b>Part  '.$partid.'&nbsp; &nbsp;Point:</b> </td><td>';
	$result.='<table border="0"><tr>';  
	my $ctr = 0;
	while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
	    $result.= '<td><input type="radio" name="RADVAL_'.$partid.'" '.
		'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
		','.$ctr.')" />'.$ctr."</td>\n";
	    $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
	    $ctr++;
	}
	$result.='</tr></table>';
	$result.= '</td><td><b> or </b><input type="text" name="TEXTVAL_'.
	    $partid.'" size="4" '.'onChange="javascript:writePoint(\''.
		$partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
	    $weight{$partid}.' (problem weight)</td>'."\n";
	$result.= '</td><td><select name="SELVAL_'.$partid.'"'.
	    'onChange="javascript:writeRadText(\''.$partid.'\','.
		$weight{$partid}.')" /> '.
	    '<option selected="on"> </option>'.
	    '<option>excused</option></select></td></tr>'."\n";
	$ctsparts++;
    }
    $result.='</table>'.'</td></tr></table>'.'</td></tr></table>'."\n".
	'<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
    $result.='<input type="button" value="Reset" '.
	'onClick="javascript:resetEntry('.$ctsparts.');" TARGET=_self> &nbsp; &nbsp;';
    $result.='<input type="button" value="Submit Changes" '.
	'onClick="javascript:submit();" TARGET=_self />'."\n";

    #table listing all the students in a section/class
    #header of table
    $result.= '<h3>Assign Grade to Specific Students in ';
    if ($ENV{'form.section'} eq 'all') {
	$result.='the Class </h3>';
    } elsif ($ENV{'form.section'} eq 'no') {
	$result.='no Section </h3>';
    } else {
	$result.='Section '.$ENV{'form.section'}.'</h3>';
    }
    $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
	'<table border=0><tr bgcolor="#deffff">'.
	'<td><b>Fullname</b></td><td><b>Username</b></td><td><b>Domain</b></td>'."\n";
    my (@parts) = sort(&getpartlist($url));
    foreach my $part (@parts) {
	my $display=&Apache::lonnet::metadata($url,$part.'.display');
	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
	if ($display =~ /^Partial Credit Factor/) {
	    my ($partid) = &split_part_type($part);
	    $result.='<td><b>Score Part '.$partid.'<br />(weight = '.
		$weight{$partid}.')</b></td>'."\n";
	    next;
	}
	$display =~ s|Problem Status|Grade Status<br />|;
	$result.='<td><b>'.$display.'</b></td>'."\n";
    }
    $result.='</tr>';

    #get info for each student
    #list all the students - with points and grade status
    my (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');
    my $ctr = 0;
    foreach (sort {lc($$fullname{$a}) cmp lc($$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="button" value="Submit Changes" '.
	'onClick="javascript:submit();" TARGET=_self /></form>'."\n";
    $result.=&show_grading_menu_form($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 ($part,$type) = &split_part_type($part);
	my $score=$record{"resource.$part.$type"};
	if ($type eq 'awarded') {
	    my $pts = $score eq '' ? '' : $score*$$weight{$part};
	    $result.='<input type="hidden" name="'.
		'GD_'.$uname.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
	    $result.='<td align="middle"><input type="text" name="'.
		'GD_'.$uname.'_'.$part.'_awarded" '.
		'onChange="javascript:changeSelect(\''.$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.'_'.
		$part.'_solved_s" value="'.$status.'" />'."\n";
	    $result.='<td align="middle"><select name="'.
		'GD_'.$uname.'_'.$part.'_solved" '.
		'onChange="javascript:changeOneScore(\''.$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";
	} else {
	    $result.='<input type="hidden" name="'.
		'GD_'.$uname.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
		    "\n";
	    $result.='<td align="middle"><input type="text" name="'.
		'GD_'.$uname.'_'.$part.'_'.$type.'" '.
		'value="'.$score.'" size="4" /></td>'."\n";
	}
    }
    $result.='</tr>';
    return $result;
}

#--- change scores for all the students in a section/class
#    record does not get update if unchanged
sub editgrades {
    my ($request) = @_;

    my $symb=$ENV{'form.symb'};
    my $url =$ENV{'form.url'};
    my $title='<h3><font color="#339933">Current Grade Status</font></h3>';
    $title.='<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font><br />'."\n";
    $title.='<font size=+1><b>Section: </b>'.$ENV{'form.section'}.'</font>'."\n";
    $title.= &show_grading_menu_form ($symb,$url);
    my $result= '<table border="0"><tr><td bgcolor="#777777">'."\n";
    $result.= '<table border="0"><tr bgcolor="#deffff">'.
	'<td rowspan=2><b>Username</b></td><td rowspan=2><b>Fullname</b></td>'."\n";

    my %scoreptr = (
		    'correct'  =>'correct_by_override',
		    'incorrect'=>'incorrect_by_override',
		    'excused'  =>'excused',
		    'ungraded' =>'ungraded_attempted',
		    'nothing'  => '',
		    );
    my ($classlist,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');

    my (@partid);
    my %weight = ();
    my %columns = ();
    my ($i,$ctr,$count,$rec_update) = (0,0,0,0);

    my (@parts) = sort(&getpartlist($url));
    my $header;
    while ($ctr < $ENV{'form.totalparts'}) {
	my $partid = $ENV{'form.partid_'.$ctr};
	push @partid,$partid;
	$weight{$partid} = $ENV{'form.weight_'.$partid};
	$ctr++;
    }
    foreach my $partid (@partid) {
	$header .= '<td align="center">&nbsp;<b>Old Score</b>&nbsp;</td>'.
	    '<td align="center">&nbsp;<b>New Score</b>&nbsp;</td>';
	$columns{$partid}=2;
	foreach my $stores (@parts) {
	    my ($part,$type) = &split_part_type($stores);
	    if ($part !~ m/^\Q$partid\E/) { next;}
	    if ($type eq 'awarded' || $type eq 'solved') { next; }
	    my $display=&Apache::lonnet::metadata($url,$stores.'.display');
	    $display =~ s/\[Part: (\w)+\]//;
	    $header .= '<td align="center">&nbsp;<b>Old</b> '.$display.'&nbsp;</td>'.
		'<td align="center">&nbsp;<b>New</b> '.$display.'&nbsp;</td>';
	    $columns{$partid}+=2;
	}
    }
    foreach my $partid (@partid) {
	$result .= '<td colspan="'.$columns{$partid}.
	    '" align="center"><b>Part '.$partid.
	    '</b> (Weight = '.$weight{$partid}.')</td>';

    }
    $result .= '</tr><tr bgcolor="#deffff">';
    $result .= $header;
    $result .= '</tr>'."\n";

    for ($i=0; $i<$ENV{'form.total'}; $i++) {
	my $user = $ENV{'form.ctr'.$i};
	my %newrecord;
	my $updateflag = 0;
	my @userdom = grep /^$user:/,keys %$classlist;
	my (undef,$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.'_'.$_.'_awarded_s'};
	    my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
	    my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
	    my $old_score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};

	    my $awarded   = $ENV{'form.GD_'.$user.'_'.$_.'_awarded'};
	    my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
	    my $partial   = $awarded eq '' ? '' : $pcr;
	    my $score;
	    if ($partial eq '') {
		$score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};
	    } elsif ($partial > 0) {
		$score = 'correct_by_override';
	    } elsif ($partial == 0) {
		$score = 'incorrect_by_override';
	    }
	    $score = 'excused' if (($ENV{'form.GD_'.$user.'_'.$_.'_solved'} eq 'excused') &&
				   ($score ne 'excused'));
	    $result .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
		'<td align="center">'.$awarded.
		($score eq 'excused' ? $score : '').'&nbsp;</td>';

	    if (!($old_part eq $partial && $old_score eq $score)) {
		$updateflag = 1;
		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
		$newrecord{'resource.'.$_.'.solved'}   = $score;
		$rec_update++;
	    }

	    my $partid=$_;
	    foreach my $stores (@parts) {
		my ($part,$type) = &split_part_type($stores);
		if ($part !~ m/^\Q$partid\E/) { next;}
		if ($type eq 'awarded' || $type eq 'solved') { next; }
		my $old_aw    = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
		my $awarded   = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type};
		if ($awarded ne '' && $awarded ne $old_aw) {
		    $newrecord{'resource.'.$part.'.'.$type}= $awarded;
		    $updateflag=1;
		}
		$result .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
		    '<td align="center">'.$awarded.'&nbsp;</td>';
	    }
	}
	$result .= '</tr>'."\n";
	if ($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;
}

sub split_part_type {
    my ($partstr) = @_;
    my ($temp,@allparts)=split(/_/,$partstr);
    my $type=pop(@allparts);
    my $part=join('.',@allparts);
    return ($part,$type);
}

#------------- 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 $javascript;
    if ($ENV{'form.upfile_associate'} eq 'reverse') {
	$javascript=&csvupload_javascript_reverse_associate();
    } else {
	$javascript=&csvupload_javascript_forward_associate();
    }

    my $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>';
    $request->print(<<ENDPICK);
<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
<h3><font color="#339933">Uploading Class Grades</font></h3>
$result
<hr>
<h3>Identify fields</h3>
Total number of records found in file: $distotal <hr />
Enter as many fields as you can. The system will inform you and bring you back
to this page if the data selected is insufficient to run your class.<hr />
<input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
<input type="hidden" name="associate"  value="" />
<input type="hidden" name="phase"      value="three" />
<input type="hidden" name="datatoken"  value="$datatoken" />
<input type="hidden" name="fileupload" value="$ENV{'form.fileupload'}" />
<input type="hidden" name="upfiletype" value="$ENV{'form.upfiletype'}" />
<input type="hidden" name="upfile_associate" 
                                       value="$ENV{'form.upfile_associate'}" />
<input type="hidden" name="symb"       value="$symb" />
<input type="hidden" name="url"        value="$url" />
<input type="hidden" name="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 ($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='<h3>&nbsp;<font color="#339933">Select a Grading Method</font></h3>';
    $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,undef) = &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>Grade Entire Section or 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";
    $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";
    if (ref($sections)) {
	foreach (sort (@$sections)) {
	    $result.= '<option>'.$_.'</option>'."\n";
	}
    }
    $result.='<option selected="on">all</select>'."<br />\n";
    $result.='&nbsp;<input type="button" onClick="submit();" value="Grade" /></form>'."\n";
    $result.='</td></tr></table>'."\n";
    $result.='</td></tr></table>'."\n";
    return $result;
}

#--- Menu to upload a csv scores ---
sub upcsvScores_form {
    my ($symb,$url) = @_;
    if (!$symb) {return '';}
    my $result = '<script type="text/javascript" language="javascript">'."\n".
	'  function checkUpload(formname) {'."\n".
	'    if (formname.upfile.value == "") {'."\n".
	'       alert("Please use the browse button to select a file from your local directory.");'."\n".
	'       return false;'."\n".
	'    }'."\n".
	'    formname.submit();'."\n".
	'  }'."\n".
	'</script>'."\n";

    $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="button" onClick="javascript:checkUpload(this.form);" 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";
    $result.='&nbsp;<b>';
    if ($handgrade eq 'yes') {
	$result.="View/Grade ";
    } else {
	$result.="View ";
    }
    $result.='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";

    $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";
    if (ref($sections)) {
	foreach (sort (@$sections)) {$result.='<option>'.$_.'</option>'."\n";}
    }
    $result.= '<option selected="on">all</select>'."\n";
    $result.='&nbsp;&nbsp;<b>Display students who has: </b>'.
	'<input type="radio" name="submitonly" value="yes" checked> submitted'.
	'<input type="radio" name="submitonly" value="all"> everybody <br />';
    if (ref($sections)) {
	$result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />' 
	    if (grep /no/,@$sections);
    }


    $result.='<br />&nbsp;<input type="button" onClick="submit();" value="';
    if ($handgrade eq 'yes') {
	$result.="View/Grade";
    } else {
	$result.="View";
    }
    $result.='" />'."\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 $result = '<script type="text/javascript" language="javascript">'."\n".
	'  function checkEntry(formname) {'."\n".
	'    var receipt = formname.receipt.value;'."\n".
	'    if (isNaN(receipt) || receipt == "") {'."\n".
	'       alert("Please enter a receipt number given by a student in the box.");'."\n".
	'       return false;'."\n".
	'    }'."\n".
	'    formname.submit();'."\n".
	'  }'."\n".
	'</script>'."\n";

    my $hostver=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'});

    $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" name="verifyform">'."\n";
    $result.='&nbsp;<tt>'.$hostver.'-<input type="text" name="receipt" size="4"></tt><br />'."\n";
    $result.='&nbsp;<input type="button" onClick="javascript:checkEntry(this.form);"'.
	' 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 {
			$request->print('<h3>Not authorized: '.$token.'</h3>');
		    }           
		} else {
		    $request->print('<h3>Not a valid DocID: '.$token.'</h3>');
		}
	    } else {
		$request->print(&Apache::lonxml::tokeninputfield());
	    }
	}
    } else {
	$Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$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 {
    my ($request)= @_;
    $request->print(&Apache::lontexconvert::header());
#  $request->print("
#<script>
#remotewindow=open('','homeworkremote');
#remotewindow.close();
#</script>"); 
    $request->print(&Apache::loncommon::bodytag('Grading'));
}

sub send_footer {
    my ($request)= @_;
    $request->print('</body>');
    $request->print(&Apache::lontexconvert::footer());
}

1;

__END__;

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>