--- loncom/homework/grades.pm	2003/09/25 08:30:57	1.130.2.1.2.3
+++ loncom/homework/grades.pm	2003/10/28 23:20:03	1.145
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.130.2.1.2.3 2003/09/25 08:30:57 albertel Exp $
+# $Id: grades.pm,v 1.145 2003/10/28 23:20:03 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -185,7 +185,7 @@ sub cleanRecord {
 	    $ENV{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
 	    $ENV{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
 	}
-	return '<br /><br /><blockquote>'.&keywords_highlight($answer).'</blockquote>';
+	return '<br /><br /><blockquote><pre>'.&keywords_highlight($answer).'</pre></blockquote>';
     }
     return $answer;
 }
@@ -218,7 +218,8 @@ sub commonJSfunctions {
 		}
 	    }
 	} else {
-	    if (selectOne.selected) return selectOne.value;
+            // only one value it must be the selected one
+	    return selectOne.value;
 	}
     }
 </script>
@@ -506,9 +507,12 @@ LISTJAVASCRIPT
     my $checkhdgrade = ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1 ) ? 'checked' : '';
     my $checklastsub = $checkhdgrade eq '' ? 'checked' : '';
     my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'."\n".
-	'&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked /> no '."\n".
+	'&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked="on" /> no '."\n".
 	'<input type="radio" name="vProb" value="yes" /> one student '."\n".
 	'<input type="radio" name="vProb" value="all" /> all students <br />'."\n".
+	'&nbsp;<b>View Answer: </b><input type="radio" name="vAns" value="no"  /> no '."\n".
+	'<input type="radio" name="vAns" value="yes" /> one student '."\n".
+	'<input type="radio" name="vAns" value="all" checked="on" /> all students <br />'."\n".
 	'&nbsp;<b>Submissions: </b>'."\n";
     if ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1) {
 	$gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> essay part only'."\n";
@@ -517,8 +521,8 @@ LISTJAVASCRIPT
     my $saveStatus = $ENV{'form.Status'} eq '' ? 'Active' : $ENV{'form.Status'};
     $ENV{'form.Status'} = $saveStatus;
 
-    $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last sub only'."\n".
-	'<input type="radio" name="lastSub" value="last" /> last sub & parts info'."\n".
+    $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last submission only'."\n".
+	'<input type="radio" name="lastSub" value="last" /> last submission & parts info'."\n".
 	'<input type="radio" name="lastSub" value="datesub" /> by dates and submissions'."\n".
 	'<input type="radio" name="lastSub" value="all" /> all details'."\n".
 	'<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
@@ -544,7 +548,7 @@ LISTJAVASCRIPT
     $gradeTable.='<input type="button" '."\n".
 	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
 	'value="Next->" />'."\n";
-
+    $gradeTable.='<input type="checkbox" name="checkPlag" checked="on">Check For Plagiarism</input>';
     my (undef, undef, $fullname) = &getclasslist($getsec,'1');  
     $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
 	'<table border="0"><tr bgcolor="#e6ffff">';
@@ -568,18 +572,21 @@ LISTJAVASCRIPT
 	my %status = ();
 	if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 	    (%status) =&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
-	    my $statusflg = '';
+	    my $submitted = 0;
+	    my $graded = 1;
 	    foreach (keys(%status)) {
-		$statusflg = 1 if ($status{$_} ne 'nothing');
+		$submitted = 1 if ($status{$_} ne 'nothing');
+		$graded = 0 if ($status{$_} =~ /^correct/);
 		my ($foo,$partid,$foo1) = split(/\./,$_);
 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
-		    $statusflg = '';
+		    $submitted = 0;
 		    $gradeTable.='<input type="hidden" name="'.
 			$student.':submitted_by" value="'.
 			$status{'resource.'.$partid.'.submitted_by'}.'" />';
 		}
 	    }
-	    next if ($statusflg eq '' && $submitonly eq 'yes');
+	    next if (!$submitted && ($submitonly eq 'yes' || $submitonly eq 'graded'));
+	    next if (!$graded && $submitonly eq 'graded');
 	}
 
 	$ctr++;
@@ -621,7 +628,7 @@ LISTJAVASCRIPT
 	} else {
 	    $gradeTable='<br />&nbsp;<font color="red">'.
 		'No submissions found for this resource for any students. ('.$num_students.
-		' checked for submissions</font><br />';
+		' checked for submissions)</font><br />';
 	}
     } elsif ($ctr == 1) {
 	$gradeTable =~ s/type=checkbox/type=checkbox checked/;
@@ -1195,27 +1202,46 @@ sub gradeBox {
 }
 
 sub show_problem {
-    my ($request,$symb,$uname,$udom,$removeform,$viewon) = @_;
-    my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
-						      $ENV{'request.course.id'});
+    my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode) = @_;
+    my $rendered;
+    if ($mode eq 'both' or $mode eq 'text') {
+	$rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
+					     $ENV{'request.course.id'});
+    }
     if ($removeform) {
 	$rendered=~s|<form(.*?)>||g;
 	$rendered=~s|</form>||g;
 	$rendered=~s|name="submit"|name="would_have_been_submit"|g;
     }
-    my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
-							   $ENV{'request.course.id'});
+    my $companswer;
+    if ($mode eq 'both' or $mode eq 'answer') {
+	$companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
+						    $ENV{'request.course.id'});
+    }
     if ($removeform) {
 	$companswer=~s|<form(.*?)>||g;
 	$companswer=~s|</form>||g;
-	$rendered=~s|name="submit"|name="would_have_been_submit"|g;
+	$companswer=~s|name="submit"|name="would_have_been_submit"|g;
     }
     my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
     $result.='<table border="0" width="100%">';
-    $result.='<tr><td bgcolor="#e6ffff"><b> View of the problem - '.$ENV{'form.fullname'}.
-	'</b></td></tr>' if ($viewon);
-    $result.='<tr><td bgcolor="#ffffff">'.$rendered.'<br />';
-    $result.='<b>Correct answer:</b><br />'.$companswer;
+    if ($viewon) {
+	$result.='<tr><td bgcolor="#e6ffff"><b> ';
+	if ($mode eq 'both' or $mode eq 'text') {
+	    $result.='View of the problem - ';
+	} else {
+	    $result.='Correct answer: ';
+	}
+	$result.=$ENV{'form.fullname'}.'</b></td></tr>';
+    }
+    if ($mode eq 'both') {
+	$result.='<tr><td bgcolor="#ffffff">'.$rendered.'<br />';
+	$result.='<b>Correct answer:</b><br />'.$companswer;
+    } elsif ($mode eq 'text') {
+	$result.='<tr><td bgcolor="#ffffff">'.$rendered;
+    } elsif ($mode eq 'answer') {
+	$result.='<tr><td bgcolor="#ffffff">'.$companswer;
+    }
     $result.='</td></tr></table>';
     $result.='</td></tr></table><br />';
     return $result;
@@ -1264,8 +1290,16 @@ sub submission {
 
 	# option to display problem, only once else it cause problems 
         # with the form later since the problem has a form.
-	if ($ENV{'form.vProb'} eq 'yes' or !$ENV{'form.vProb'}) {
-	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1));
+	if ($ENV{'form.vProb'} eq 'yes' or $ENV{'form.vAns'} eq 'yes') {
+	    my $mode;
+	    if ($ENV{'form.vProb'} eq 'yes' && $ENV{'form.vAns'} eq 'yes') {
+		$mode='both';
+	    } elsif ($ENV{'form.vProb'} eq 'yes') {
+		$mode='text';
+	    } elsif ($ENV{'form.vAns'} eq 'yes') {
+		$mode='answer';
+	    }
+	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1,$mode));
 	}
 	
 	# kwclr is the only variable that is guaranteed to be non blank 
@@ -1300,6 +1334,7 @@ sub submission {
 			'<input type="hidden" name="url"        value="'.$url.'" />'."\n".
 			'<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" />'."\n".
 			'<input type="hidden" name="vProb"      value="'.$ENV{'form.vProb'}.'" />'."\n".
+			'<input type="hidden" name="vAns"       value="'.$ENV{'form.vAns'}.'" />'."\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".
@@ -1350,10 +1385,19 @@ KEYWORDS
         }
     }
 
-    if ($ENV{'form.vProb'} eq 'all') {
+    if ($ENV{'form.vProb'} eq 'all' or $ENV{'form.vAns'} eq 'all') {
 	$request->print('<br /><br /><br />') if ($counter > 0);
-	$request->print(&show_problem($request,$symb,$uname,$udom,1,1));
+	my $mode;
+	if ($ENV{'form.vProb'} eq 'all' && $ENV{'form.vAns'} eq 'all') {
+	    $mode='both';
+	} elsif ($ENV{'form.vProb'} eq 'all' ) {
+	    $mode='text';
+	} elsif ($ENV{'form.vAns'} eq 'all') {
+	    $mode='answer';
+	}
+	$request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode));
     }
+
     my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
 
     my ($partlist,$handgrade) = &response_type($url,$symb);
@@ -1461,13 +1505,20 @@ KEYWORDS
 				my ($ressub,$subval) = split(/:/,$_,2);
                             # Similarity check
 				my $similar='';
-				my ($oname,$odom,$ocrsid,$oessay,$osim)=&most_similar($uname,$udom,$subval);
-				if ($osim) {
-				    $osim=int($osim*100.0);
-				    $similar='<hr /><h3><font color="#FF0000">Essay is '.$osim.
-					'% similar to an essay by '.&Apache::loncommon::plainname($oname,$odom).
-					'</font></h3><blockquote><i>'.
-					&keywords_highlight($oessay).'</i></blockquote><hr />';
+				my $oname;
+				my $odom;
+				my $ocrsid;
+				my $oessay;
+				my $osim;
+				if($ENV{'form.checkPlag'}){
+				    ($oname,$odom,$ocrsid,$oessay,$osim)=&most_similar($uname,$udom,$subval);
+				    if ($osim) {
+					$osim=int($osim*100.0);
+					$similar='<hr /><h3><font color="#FF0000">Essay is '.$osim.
+					    '% similar to an essay by '.&Apache::loncommon::plainname($oname,$odom).
+					    '</font></h3><blockquote><i>'.
+					    &keywords_highlight($oessay).'</i></blockquote><hr />';
+				    }
 				}
 				$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
 				    $partid.'</b> <font color="#999999">( ID '.$respid.
@@ -1480,7 +1531,7 @@ KEYWORDS
 				     'this file may contain virusses</font><br />':'').
 				     '<b>Submitted Answer: </b>'.
 				     &cleanRecord($subval,$responsetype,$symb).
-				      '<br /><br />'.$similar."\n"
+				     '<br /><br />'.$similar."\n"
 				     if ($ENV{'form.lastSub'} eq 'lastonly' || 
 					 ($ENV{'form.lastSub'} eq 'hdgrade' && 
 					  $$handgrade{$part} =~ /:yes$/));
@@ -1782,15 +1833,25 @@ sub processHandGrade {
     }
     $ctr = 0;
     @parsedlist = reverse @parsedlist if ($button eq 'Previous');
+    my ($partlist) = &response_type($url);
     foreach my $student (@parsedlist) {
+	my $submitonly=$ENV{'form.submitonly'};
 	my ($uname,$udom) = split(/:/,$student);
-	if ($ENV{'form.submitonly'} eq 'yes') {
-	    my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
-	    my $statusflg = '';
-	    foreach (split(/:/,$ENV{'form.gradePartRespid'})){
-		$statusflg = 1 if (exists ($record{'resource.'.$_.'.submission'}));
+	if ($submitonly =~ /^(yes|graded)$/) {
+#	    my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
+	    my %status=&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
+	    my $submitted = 0;
+	    my $graded = 1;
+	    foreach (keys(%status)) {
+		$submitted = 1 if ($status{$_} ne 'nothing');
+		$graded = 0 if ($status{$_} =~ /^correct/);
+		my ($foo,$partid,$foo1) = split(/\./,$_);
+		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
+		    $submitted = 0;
+		}
 	    }
-	    next if ($statusflg eq '');
+	    next if (!$submitted && ($submitonly eq 'yes' || $submitonly eq 'graded'));
+	    next if (!$graded && $submitonly eq 'graded');
 	}
 	push @nextlist,$student if ($ctr < $ntstu);
 	last if ($ctr == $ntstu);
@@ -2327,18 +2388,17 @@ sub editgrades {
 		$newrecord{'resource.'.$_.'.awarded'} = 0;
 		$newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
 		$updateflag = 1;
+	    } elsif (!($old_part eq $partial && $old_score eq $score)) {
+		$updateflag = 1;
+		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
+		$newrecord{'resource.'.$_.'.solved'}   = $score;
+		$rec_update++;
 	    }
 
 	    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 		'<td align="center">'.$awarded.
 		($score eq 'excused' ? $score : '').'&nbsp;</td>';
 
-	    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) {
@@ -2726,7 +2786,9 @@ LISTJAVASCRIPT
     $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
     $result.='&nbsp;<b>Problems from:</b> <select name="selectpage">'."\n";
     my ($titles,$symbx) = &getSymbMap($request);
-    my ($curpage,$type,$mapId) = ($symb =~ /(.*?\.(page|sequence))___(\d+)___/); 
+    my ($curpage) =&Apache::lonnet::decode_symb($symb); 
+#    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
+#    my $type=($curpage =~ /\.(page|sequence)/);
     my $ctr=0;
     foreach (@$titles) {
 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
@@ -2746,7 +2808,7 @@ LISTJAVASCRIPT
     $result.='<input type="hidden" name="page" />'."\n".
 	'<input type="hidden" name="title" />'."\n";
 
-    $result.='&nbsp;<b>View Problems Text: </b><input type="radio" name="vProb" value="no" checked /> no '."\n".
+    $result.='&nbsp;<b>View Problems Text: </b><input type="radio" name="vProb" value="no" checked="on" /> no '."\n".
 	'<input type="radio" name="vProb" value="yes" /> yes '."<br>\n";
 
     $result.='&nbsp;<b>Submission Details: </b>'.
@@ -2798,9 +2860,7 @@ LISTJAVASCRIPT
 
 sub getSymbMap {
     my ($request) = @_;
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db');
-#    $navmap->init();
+    my $navmap = Apache::lonnavmaps::navmap->new();
 
     my %symbx = ();
     my @titles = ();
@@ -2845,9 +2905,8 @@ sub displayPage {
     &sub_page_js($request);
     $request->print($result);
 
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db',1, 1);
-    my ($mapUrl, $id, $resUrl) = split(/___/, $ENV{'form.page'});
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($ENV{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 
     my $iterator = $navmap->getIterator($map->map_start(),
@@ -2888,8 +2947,9 @@ sub displayPage {
 	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$question.
 		(scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
 	    $studentTable.='<td valign="top">';
-	    if ($ENV{'form.vProb'} eq 'yes') {
-		$studentTable.=&show_problem($request,$symbx,$uname,$udom,1);
+	    if ($ENV{'form.vProb'} eq 'yes' ) {
+		$studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
+					     undef,'both');
 	    } else {
 		my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$ENV{'request.course.id'});
 		$companswer =~ s|<form(.*?)>||g;
@@ -3008,9 +3068,8 @@ sub updateGradeByPage {
 
     $request->print($result);
 
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db',1, 1);
-    my ($mapUrl, $id, $resUrl) = split(/___/, $ENV{'form.page'});
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $ENV{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 
     my $iterator = $navmap->getIterator($map->map_start(),
@@ -3132,7 +3191,7 @@ sub getSequenceDropDown {
     my ($request,$symb)=@_;
     my $result='<select name="selectpage">'."\n";
     my ($titles,$symbx) = &getSymbMap($request);
-    my ($curpage,$type,$mapId) = ($symb =~ /(.*?\.(page|sequence))___(\d+)___/); 
+    my ($curpage)=&Apache::lonnet::decode_symb($symb); 
     my $ctr=0;
     foreach (@$titles) {
 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
@@ -3146,8 +3205,6 @@ sub getSequenceDropDown {
 }
 
 sub scantron_uploads {
-    #FIXME need to support scantron files put in another location,
-    # maybe the course directory? a scantron dir in the course directory?
     if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
     my $result=	'<select name="scantron_selectfile">';
     opendir(DIR,$Apache::lonnet::perlvar{'lonScansDir'});
@@ -3184,8 +3241,6 @@ sub scantron_selectphase {
     my $file_selector=&scantron_uploads();
     my $format_selector=&scantron_scantab();
     my $result;
-    #FIXME allow instructor to be able to download the scantron file
-    # and to upload it,
     $result.= <<SCANTRONFORM;
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantro_process">
   <input type="hidden" name="command" value="scantron_validate" />
@@ -3230,7 +3285,6 @@ sub get_scantron_config {
     my ($which) = @_;
     my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
     my %config;
-    #FIXME probably should move to XML it has already gotten a bit much now
     foreach my $line (<$fh>) {
 	my ($name,$descrip)=split(/:/,$line);
 	if ($name ne $which ) { next; }
@@ -3247,12 +3301,6 @@ sub get_scantron_config {
 	$config{'Qlength'}=$config[8];
 	$config{'Qoff'}=$config[9];
 	$config{'Qon'}=$config[10];
-	$config{'PaperID'}=$config[11];
-	$config{'PaperIDlength'}=$config[12];
-	$config{'FirstName'}=$config[13];
-	$config{'FirstNamelength'}=$config[14];
-	$config{'LastName'}=$config[15];
-	$config{'LastNamelength'}=$config[16];
 	last;
     }
     return %config;
@@ -3268,22 +3316,6 @@ sub username_to_idmap {
     return %idmap;
 }
 
-sub scantron_fixup_scanline {
-    my ($scantron_config,$line,$field,$newvalue) = @_;
-    if ($field eq 'ID') {
-	if ($newvalue > $$scantron_config{'IDlength'}) {
-	    return ($line,1,'New value to large');
-	}
-	if ($newvalue < $$scantron_config{'IDlength'}) {
-	    $newvalue=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
-			      $newvalue);
-	}
-	substr($line,$$scantron_config{'IDstart'}-1,
-	       $$scantron_config{'IDlength'})=$newvalue;
-    }
-    return $line;
-}
-
 sub scantron_parse_scanline {
     my ($line,$scantron_config)=@_;
     my %record;
@@ -3299,15 +3331,6 @@ sub scantron_parse_scanline {
     }
     $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
 				  $$scantron_config{'IDlength'});
-    $record{'scantron.paperID'}=
-	substr($data,$$scantron_config{'PaperID'}-1,
-	       $$scantron_config{'PaperIDlength'});
-    $record{'scantron.FirstName'}=
-	substr($data,$$scantron_config{'FirstName'}-1,
-	       $$scantron_config{'FirstNamelength'});
-    $record{'scantron.LastName'}=
-	substr($data,$$scantron_config{'LastName'}-1,
-	       $$scantron_config{'LastNamelength'});
     my @alphabet=('A'..'Z');
     my $questnum=0;
     while ($questions) {
@@ -3318,7 +3341,6 @@ sub scantron_parse_scanline {
 	my (@array)=split(/$$scantron_config{'Qon'}/,$currentquest);
 	if (scalar(@array) gt 2) {
 	    #FIXME do something intelligent with double bubbles
-	    #actually not a concern right now, should be taking care of later
 	    Apache->request->print("<br ><b>Wha!!!</b> <pre>".scalar(@array).
 				   '-'.$currentquest.'-'.$questnum.'</pre><br />');
 	}
@@ -3370,233 +3392,13 @@ sub scantron_filter {
 #the corrected one, I'll still need to catch error conditions, but
 #maybe most will taken care even before we start
 
-sub scantron_process_corrections {
-    my ($r) = @_;
-    if ($ENV{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
-	my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
-	my $scanlines=&scantron_getfile();
-	my $classlist=&Apache::loncoursedata::get_classlist();
-	my $which=$ENV{'form.scantron_line'};
-	my $line=&scantron_get_line($scanlines,$which);
-	my $newstudent=$ENV{'form.scantron_username'}.':'.
-	    $ENV{'form.scantron_domain'};
-	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
-	($line,my $err,my $errmsg)=
-	    &scantron_fixup_scanline(\%scantron_config,$line,'ID',$newid);
-	if ($err) {
-	    $r->print("Unable to accept last correction, an error occurred :$errmsg:");
-	} else {
-	    &scantron_put_line($scanlines,$which,$line);
-	    &scantron_putfile($scanlines);
-	}
-    }
-}
-
 sub scantron_validate_file {
     my ($r) = @_;
-    my ($symb,$url)=&get_symb_and_url($r);
-    if (!$symb) {return '';}
-    my $default_form_data=&defaultFormData($symb,$url);
-
-    if ($ENV{'form.scantron_corrections'}) {
-	&scantron_process_corrections($r);
-    }
-    #get the student pick code ready
-    $r->print(&Apache::loncommon::studentbrowser_javascript());
-    my $result= <<SCANTRONFORM;
-<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
-  <input type="hidden" name="command" value="scantron_validate" />
-  <input type="hidden" name="selectpage" value="$ENV{'form.selectpage'}" />
-  <input type="hidden" name="scantron_format" value="$ENV{'form.scantron_format'}" />
-  <input type="hidden" name="scantron_selectfile" value="$ENV{'form.scantron_selectfile'}" />
-  $default_form_data
-SCANTRONFORM
-    $r->print($result);
-    
-    my @validate_phases=( 'ID',
-			  'CODE',
-			  'doublebubble',
-			  'missingbubbles');
-    if (!$ENV{'form.validatepass'}) {
-	$ENV{'form.valiadatepass'} = 0;
-    }
-    my $currentphase=$ENV{'form.valiadatepass'};
-
-    if ($ENV{'form.scantron_selectfile'}=~m-^/-) {
-	#first pass copy file to classdir
-	
-    }
-    my $stop=0;
-    while (!$stop && $currentphase < scalar(@validate_phases)) {
-	my $which="scantron_validate_".$validate_phases[$currentphase];
-	{
-	    no strict 'refs';
-	    ($stop,$currentphase)=&$which($r,$currentphase);
-	}
-    }
-    $r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
-    return '';
-}
-
-sub scantron_getfile {
-    #my $scanlines=Apache::File->new($Apache::lonnet::perlvar{'lonScansDir'}."/$ENV{'form.scantron_selectfile'}");
-    #FIXME really would prefer a scantron directory but tokenwrapper
-    # doesn't allow access to subdirs of userfiles
-    my $lines;
-    $lines=&Apache::lonnet::getfile('/uploaded/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.'/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.'/'.
-		       'scantron_orig_'.$ENV{'form.scantron_selectfile'});
-    if ($lines eq '-1') {
-       #FIXME need to actually replicate file to course space
-    }
-    my %scanlines;
-    $scanlines{'orig'}=[split("\n",$lines)];
-    my $temp=$scanlines{'orig'};
-    $scanlines{'count'}=$#$temp;
-
-    $lines=&Apache::lonnet::getfile('/uploaded/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.'/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.'/'.
-		       'scantron_corrected_'.$ENV{'form.scantron_selectfile'});
-    if ($lines eq '-1') {
-	$scanlines{'corrected'}=[];
-    } else {
-	$scanlines{'corrected'}=[split("\n",$lines)];
-    }
-    $lines=&Apache::lonnet::getfile('/uploaded/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.'/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.'/'.
-		       'scantron_skipped_'.$ENV{'form.scantron_selectfile'});
-    if ($lines eq '-1') {
-	$scanlines{'skipped'}=[];
-    } else {
-	$scanlines{'skipped'}=[split("\n",$lines)];
-    }
-    return \%scanlines;
-}
-
-sub lonnet_putfile {
-    my ($contents,$filename)=@_;
-    my $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
-    my $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
-    my $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
-    $ENV{'form.sillywaytopassafilearound'}=$contents;
-    &Apache::lonnet::finishuserfileupload($docuname,$docudom,$docuhome,'sillywaytopassafilearound',$filename);
-
-}
-
-sub scantron_putfile {
-    my ($scanlines) = @_;
-    #FIXME really would prefer a scantron directory but tokenwrapper
-    # doesn't allow access to subdirs of userfiles
-    my $prefix='/uploaded/'.
-	$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.'/'.
-	$ENV{'course.'.$ENV{'request.course.id'}.'.num'}.'/'.
-	'scantron_';
-    my $prefix='scantron_';
-# no need to update orig, shouldn't change
-#   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
-#		    $ENV{'form.scantron_selectfile'});
-    &lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
-		    $prefix.'corrected_'.
-		    $ENV{'form.scantron_selectfile'});
-    &lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
-		    $prefix.'skipped_'.
-		    $ENV{'form.scantron_selectfile'});
-}
-
-sub scantron_get_line {
-    my ($scanlines,$i)=@_;
-    if ($scanlines->{'skipped'}[$i]) {return undef;}
-    if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
-    return $scanlines->{'orig'}[$i]; 
-}
-
-sub scantron_put_line {
-    my ($scanlines,$i,$newline,$skip)=@_;
-    if ($skip) { $scanlines->{'skipped'}[$i]=$newline;return; }
-    $scanlines->{'corrected'}[$i]=$newline;
-}
-
-sub scantron_validate_ID {
-    my ($r,$currentphase) = @_;
-    
-    #get student info
-    my $classlist=&Apache::loncoursedata::get_classlist();
-    my %idmap=&username_to_idmap($classlist);
-
-    #get scantron line setup
-    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
-    my $scanlines=&scantron_getfile();
-
-    my %found=('ids'=>{},'usernames'=>{});
-    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
-	my $line=&scantron_get_line($scanlines,$i);
-	if (!$line) { next; }
-	my $scan_record=&scantron_parse_scanline($line,\%scantron_config);
-	my $id=$$scan_record{'scantron.ID'};
-	$r->print("<p>Checking ID ".$$scan_record{'scantron.ID'}."</p>\n");
-	my $found;
-	foreach my $checkid (keys(%idmap)) {
-	    if (lc($checkid) eq lc($id)) {
-		if ($checkid ne $id) {
-		    $r->print("<p>Using $checkid for bubbled $id</p>\n");
-		}
-		$found=$checkid;last;
-	    }
-	}
-	if ($found) {
-	    if ($found{'ids'}{$found}) {
-		#FIXME store away line we prviously saw the ID on
-		&scantron_get_ID_correction($r,$i,$scan_record,
-					    'duplicateID',$found);
-		return(1);
-	    } else {
-		$found{'ids'}{$found}++;
-	    }
-	} else {
-	    &scantron_get_ID_correction($r,$i,$scan_record,'incorrectID');
-	    return(1);
-	}
-    }
-
-    return (0,$currentphase+1);
-}
-
-sub scantron_get_ID_correction {
-    my ($r,$i,$scan_record,$error,$arg)=@_;
-#FIXME allow th poosibility of skipping a line, or in the case of a duplicated ID the previous line, probaly need to show both the current line and the previous one.
-    $r->print("<p>need to correct ID</p>\n");
-    $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
-    $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
-    if ($error eq 'unknownID') {
-	$r->print("<p> Unknown ID </p>\n");
-    } elsif ($error eq 'duplicateID') {
-	$r->print("<p> Duplicated ID </p>\n");
-    }
-    $r->print("<p>Original ID is ".$$scan_record{'scantron.ID'}."</p>\n");
-    $r->print("<p>Name on paper is ".$$scan_record{'scantron.LastName'}.",".
-	      $$scan_record{'scantron.FirstName'}."</p>");
-    $r->print("Corrected User -- ");
-    $r->print("\nusername:<input type='text' name='scantron_username' value='' />");
-    $r->print("\ndomain:".
-	      &Apache::loncommon::select_dom_form(undef,'scantron_domain'));
-    #FIXME it would be nice if this sent back the user ID and
-    #could do partial userID matches
-    $r->print(&Apache::loncommon::selectstudent_link('scantronupload',
-				       'scantron_username','scantron_domain'));
-    &scantron_end_validate_form($r);
-}
-
-sub scantron_end_validate_form {
-    my ($r) = @_;
-    $r->print('<input type="submit" name="submit" /></form></body></html>');
 }
 
 sub scantron_process_students {
     my ($r) = @_;
-    my (undef,undef,$sequence)=split(/___/,$ENV{'form.selectpage'});
+    my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($ENV{'form.selectpage'});
     my ($symb,$url)=&get_symb_and_url($r);
     if (!$symb) {return '';}
     my $default_form_data=&defaultFormData($symb,$url);
@@ -3606,7 +3408,7 @@ sub scantron_process_students {
     my @scanlines=<$scanlines>;
     my $classlist=&Apache::loncoursedata::get_classlist();
     my %idmap=&username_to_idmap($classlist);
-    my $navmap=Apache::lonnavmaps::navmap->new($ENV{'request.course.fn'}.'.db',$ENV{'request.course.fn'}.'_parms.db',1, 1);
+    my $navmap=Apache::lonnavmaps::navmap->new();
     my $map=$navmap->getResourceByUrl($sequence);
     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 #    $r->print("geto ".scalar(@resources)."<br />");
@@ -3762,7 +3564,7 @@ sub gradingmenu {
 	}
 	formname.command.value = cmd;
 	formname.saveState.value = "saveCmd="+cmdsave+":saveSec="+pullDownSelection(formname.section)+
-	    ":saveSub="+radioSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
+	    ":saveSub="+pullDownSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
 	if (val < 5) formname.submit();
 	if (val == 5) {
 	    if (!checkReceiptNo(formname,'notOK')) { return false;}
@@ -3830,12 +3632,14 @@ GRADINGMENUJS
 
     $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
 	'<input type="radio" name="radioChoice" value="submission" '.
-	($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>Current Resource:</b> For one or more students'.
-	'<br />&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;-->For students with '.
-	'<input type="radio" name="submitonly" value="yes" '.
-	($saveSub eq 'yes' ? 'checked' : '').' /> submissions or '.
-	'<input type="radio" name="submitonly" value="all" '.
-	($saveSub eq 'all' ? 'checked' : '').' /> for all</td></tr>'."\n";
+	($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>Current Resource:</b> For one or more students '.
+	'<select name="submitonly">'.
+	'<option value="yes" '.
+	($saveSub eq 'yes' ? 'selected="on"' : '').'>with submissions</option>'.
+	'<option value="graded" '.
+	($saveSub eq 'graded' ? 'selected="on"' : '').'>with ungraded submissions</option>'.
+	'<option value="all" '.
+	($saveSub eq 'all' ? 'selected="on"' : '').'>with any status</option></select></td></tr>'."\n";
 
     $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
 	'<input type="radio" name="radioChoice" value="viewgrades" '.
@@ -3881,9 +3685,9 @@ sub handler {
 
     undef(%perm);
     if ($ENV{'browser.mathml'}) {
-	$request->content_type('text/xml');
+	&Apache::loncommon::content_type($request,'text/xml');
     } else {
-	$request->content_type('text/html');
+	&Apache::loncommon::content_type($request,'text/html');
     }
     $request->send_http_header;
     return '' if $request->header_only;
@@ -3893,7 +3697,7 @@ sub handler {
     my $command=$ENV{'form.command'};
     if (!$url) {
 	my ($temp1,$temp2);
-	($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);
+	($temp1,$temp2,$ENV{'form.url'})=&Apache::lonnet::decode_symb($symb);
 	$url = $ENV{'form.url'};
     }
     &send_header($request);
@@ -3906,7 +3710,7 @@ sub handler {
 		my ($tsymb,$tuname,$tudom,$tcrsid)=
 		    &Apache::lonnet::checkin($token);
 		if ($tsymb) {
-		    my ($map,$id,$url)=split(/\_\_\_/,$tsymb);
+		    my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
 		    if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
 			$request->print(&Apache::lonnet::ssi_body('/res/'.$url,
 					  ('grade_username' => $tuname,