--- loncom/interface/lonquickgrades.pm	2002/12/02 10:14:57	1.8
+++ loncom/interface/lonquickgrades.pm	2024/07/03 18:51:56	1.49.6.9
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Quick Student Grades Display
 #
-# 
+# $Id: lonquickgrades.pm,v 1.49.6.9 2024/07/03 18:51:56 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -25,13 +25,17 @@
 #
 # http://www.lon-capa.org/
 #
-# Created Nov. 14, 2002 by Jeremy Bowers
 
 package Apache::lonquickgrades;
 
 use strict;
-use Apache::Constants qw(:common :http);
+use Apache::Constants qw(:common :http REDIRECT);
 use POSIX;
+use Apache::loncommon;
+use Apache::lonlocal;
+use Apache::lonnet;
+use Apache::grades;
+use Apache::lonuserstate;
 
 sub handler {
     my $r = shift;
@@ -44,65 +48,237 @@ sub real_handler {
     &Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 
     # Handle header-only request
+    if ($env{'browser.mathml'}) {
+	&Apache::loncommon::content_type($r,'text/xml');
+    } else {
+	&Apache::loncommon::content_type($r,'text/html');
+    }
     if ($r->header_only) {
-        if ($ENV{'browser.mathml'}) {
-            $r->content_type('text/xml');
-        } else {
-            $r->content_type('text/html');
+	$r->send_http_header;
+        return OK;
+    }
+
+    my $cangrade=&Apache::lonnet::allowed('mgr');
+    my $showPoints =
+        $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard';
+
+    my $reinitresult;
+
+    if ($env{'request.course.id'}) {
+        my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+        my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+        my $clientip = &Apache::lonnet::get_requestor_ip($r);
+        my ($blocked,$blocktext) =
+            &Apache::loncommon::blocking_status('grades',$clientip,$cnum,$cdom);
+        if ($blocked) {
+            my $checkrole = "cm./$cdom/$cnum";
+            if ($env{'request.course.sec'} ne '') {
+                $checkrole .= "/$env{'request.course.sec'}";
+            }
+            unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) &&
+                    ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) {
+                &grades_blocked($r,$blocktext,$showPoints);
+                return OK;
+            }
+        }
+    }
+
+    unless ($cangrade) {
+        # Check for critical messages and redirect if present.
+        my ($redirect,$url) = &Apache::loncommon::critical_redirect(300);
+        if ($redirect) {
+            &Apache::loncommon::content_type($r,'text/html');
+            $r->header_out(Location => $url);
+            return REDIRECT;
+        }
+
+        # Check if course needs to be re-initialized
+        my $loncaparev = $r->dir_config('lonVersion');
+        ($reinitresult,my @reinit) = &Apache::loncommon::needs_coursereinit($loncaparev);
+
+        if ($reinitresult eq 'switch') {
+            &Apache::loncommon::content_type($r,'text/html');
+            $r->send_http_header;
+            $r->print(&Apache::loncommon::check_release_result(@reinit));
+            return OK;
+        } elsif ($reinitresult eq 'update') {
+            my $cid = $env{'request.course.id'};
+            my $cnum = $env{'course.'.$cid.'.num'};
+            my $cdom = $env{'course.'.$cid.'.domain'};
+            &Apache::loncommon::content_type($r,'text/html');
+            $r->send_http_header;
+            &startpage($r,$showPoints);
+            my $preamble = '<div id="LC_update_'.$cid.'" class="LC_info">'.
+                           '<br />'.
+                           &mt('Your course session is being updated because of recent changes by course personnel.').
+                           ' '.&mt('Please be patient').'.<br /></div>'.
+                           '<div style="padding:0;clear:both;margin:0;border:0"></div>';
+            my %prog_state = &Apache::lonhtmlcommon::Create_PrgWin($r,undef,$preamble);
+            &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Updating course'));
+            $r->rflush();
+            my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum");
+            &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Finished!'));
+            &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+            my $closure = <<ENDCLOSE;
+<script type="text/javascript">
+// <![CDATA[
+\$("#LC_update_$cid").hide('slow');
+// ]]>
+</script>
+ENDCLOSE
+            if ($ferr) {
+                $r->print($closure.&Apache::loncommon::end_page());
+                my $requrl = $r->uri;
+                $env{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
+                $env{'user.reinit'} = 1;
+                return HTTP_NOT_ACCEPTABLE;
+            } else {
+               $r->print($closure);
+            }
         }
+    }
+
+    unless ($reinitresult eq 'update') {
+        # Send header, don't cache this page
+        &Apache::loncommon::no_cache($r);
         $r->send_http_header;
-        return OK;
+        &startpage($r,$showPoints);
     }
+    $r->rflush();
+
+    &startGradeScreen($r);
 
-    # Send header, don't cache this page
-    if ($ENV{'browser.mathml'}) {
-        $r->content_type('text/xml');
+#
+# Pick student
+#
+    my $uname;
+    my $udom;
+    my $stdid;
+    if ($cangrade) {
+        if ($env{'form.uname'}) { $uname=$env{'form.uname'}; }
+        if ($env{'form.udom'}) { $udom=$env{'form.udom'}; }
+        if ($env{'form.id'}) { $stdid=$env{'form.id'}; }
+        if (($stdid) && ($udom)) {
+            $uname=(&Apache::lonnet::idget($udom,[$stdid],'ids'))[1];
+        }
+        if (($stdid) && (!$uname)) {
+            $r->print('<p><span class="LC_warning">'.&mt("Unknown Student/Employee ID: [_1]",$stdid).'</span></p>');
+            $stdid='';
+        }
+        if (($uname eq '') && ($udom eq '')) {
+            $uname = $env{'user.name'};
+            $udom = $env{'user.domain'};
+        }
+        $r->print('<form method="post" name="quickform" action="/adm/quickgrades">');
+        my $chooseopt=&Apache::loncommon::select_dom_form($udom,'udom').' '.
+           &Apache::loncommon::selectstudent_link('quickform','uname','udom');
+        $r->print("<p>\n".&Apache::loncommon::studentbrowser_javascript()."\n");
+        $r->print(&mt('For User [_1] or Student/Employee ID [_2] at Domain [_3]'
+                 ,'<input type="text" value="'.$uname.'" size="12" name="uname" />'
+                 ,'<input type="text" value="'.$stdid.'" size="12" name="id" /> '
+                 ,$chooseopt).
+                 '&nbsp;&nbsp;<input type="submit" name="display" value="'.&mt('Display Individual Student').'" /></p>');
+        if (($uname) && ($udom)) {
+            $r->print('<p>'.&mt('Full Name: [_1]',&Apache::loncommon::plainname($uname,$udom)).'</p>');
+        }
     } else {
-        $r->content_type('text/html');
+        $r->print('<p class="LC_info">'.&mt('This may take a few moments to display.').'</p>');
     }
-    &Apache::loncommon::no_cache($r);
-    $r->send_http_header;
+    $r->rflush();
 
-    # Create the nav map
-    my $navmap = Apache::lonnavmaps::navmap->new(
-                        $ENV{"request.course.fn"}.".db",
-                        $ENV{"request.course.fn"}."_parms.db", 1, 0);
+    my $notshowTotals=
+        $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals';
 
-    if (!defined($navmap)) {
+    my ($navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,
+        $topLevelRight,$topLevelAttempted) = &getData($showPoints,$uname,$udom);
+
+    if (ref($navmap)) {
+        my $nostdtotals;
+        if ($showPoints) {
+            if ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard') {
+                my $hidetotals = $env{'course.'.$env{'request.course.id'}.'.hidetotals'};
+                if ($hidetotals eq 'all') {
+                    $nostdtotals = 1;
+                } elsif ($hidetotals ne '') {
+                    my $usec;
+                    if ($cangrade) {
+                        if (($uname eq $env{'user.name'}) && ($udom eq $env{'user.domain'})) {
+                            $usec = $env{'request.course.sec'};
+                        } else {
+                            $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
+                        }
+                    } else {
+                        $usec = $env{'request.course.sec'};
+                    }
+                    if ($usec ne '') {
+                        my %secnototals;
+                        map { $secnototals{$_} = 1; } split(/,/,$hidetotals);
+                        if ($secnototals{$usec}) {
+                            $nostdtotals = 1;
+                        }
+                    }
+                }
+            }
+        }
+        &outputTable($r,$showPoints,$notshowTotals,$nostdtotals,$navmap,
+                     $totalParts,$totalPossible,$totalRight,$totalAttempted,
+                     $topLevelParts,$topLevelRight,$topLevelAttempted);
+    } else {
+        if ($cangrade) { $r->print("\n</form>\n"); }
         my $requrl = $r->uri;
-        $ENV{'user.error.msg'} = "$requrl:bre:0:0:Navamp initialization failed.";
+        $env{'user.error.msg'} = "$requrl:bre:0:0:Navmap initialization failed.";
         return HTTP_NOT_ACCEPTABLE;
     }
+    if ($cangrade) { $r->print("\n</form>\n"); }
+    &endGradeScreen($r);
+    return OK;
+}
+
+sub grades_blocked {
+    my ($r,$blocktext,$caller) = @_;
+    my $title = 'Points Display';
+    if ($caller eq 'spreadsheet') {
+        $title = 'Spreadsheet';
+    } elsif ($env{'course.'.$env{'request.course.id'}.'.grading'} ne 'standard') {
+        $title = 'Completed Problems Display';
+    }
+    my $brcrum = [{href=>"/adm/quickgrades",text => $title}];
+    &Apache::lonhtmlcommon::clear_breadcrumbs();
+    &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/quickgrades',
+                                            text=> $title});
+    my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs($title);
+    &Apache::loncommon::content_type($r,'text/html');
+    &Apache::loncommon::no_cache($r);
+    $r->send_http_header;
+    $r->print(&Apache::loncommon::start_page($title).
+              $breadcrumbs.
+              $blocktext.
+              &Apache::loncommon::end_page());
+    return;
+}
 
-    # Keep this hash in sync with %statusIconMap in lonnavmaps; they
-    # should match color/icon
-    my $res = $navmap->firstResource(); # temp resource to access constants
+#
+# Go through the complete course and collect data
+#
+
+sub getData {
+
+    my ($showPoints,$uname,$udom)=@_;
+
+    # Create the nav map
+    my $navmap = Apache::lonnavmaps::navmap->new($uname,$udom);
 
     if (!defined($navmap)) {
-        my $requrl = $r->uri;
-        $ENV{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
-        return HTTP_NOT_ACCEPTABLE;
+        return ();
     }
- 
-    # Header
-    $r->print(&Apache::loncommon::bodytag('Quick Score Display','',
-                                          ''));
-
-    $r->print(<<HEADER);
-<p>This screen shows how many problems (or problem parts) you have completed, and
-how many you have not yet done. You can also look at <a href="/adm/studentcalc">a detailed
-score sheet</a>.</p>
-HEADER
-
-    $navmap->init();
 
-    # End navmap using boilerplate
+    my $res = $navmap->firstResource(); # temp resource to access constants
 
     my $iterator = $navmap->getIterator(undef, undef, undef, 1);
     my $depth = 1;
     $iterator->next(); # ignore first BEGIN_MAP
     my $curRes = $iterator->next();
-    
+
     # General overview of the following: Walk along the course resources.
     # For every problem in the resource, tell its parent maps how many
     # parts and how many parts correct it has. After that, each map will
@@ -111,8 +287,14 @@ HEADER
     # maps in order, with their data. 
     # (If in the future people decide not to be cumulative, only add
     #  the counts to the parent map.)
+    # For convenience, "totalParts" is also "totalPoints" when we're looking
+    #  at points; I can't come up with a variable name that makes sense
+    #  equally for both cases.
 
     my $totalParts = 0; my $totalPossible = 0; my $totalRight = 0;
+    my $totalAttempted = 0;
+    my $now = time();
+    my $topLevelParts = 0; my $topLevelRight = 0; my $topLevelAttempted = 0;
 
     # Pre-run: Count parts correct
     while ( $depth > 0 ) {
@@ -123,87 +305,163 @@ HEADER
         {
             # Get number of correct, incorrect parts
             my $parts = $curRes->parts();
-            if (scalar(@{$parts}) > 1) { shift @{$parts}; } # lose the first "0"
-            $totalParts += scalar(@{$parts});
             my $partsRight = 0;
+	    my $partsCount = 0;
+	    my $partsAttempted = 0;
             my $stack = $iterator->getStack();
             
             for my $part (@{$parts}) {
-                my $status = $curRes->getCompletionStatus($part);
-                if ($status == $curRes->CORRECT || $status == $curRes->CORRECT_BY_OVERRIDE
-                    || $status == $curRes->EXCUSED) {
-                    $partsRight++;
-                    $totalRight++;
-                }
+		my $dateStatus = $curRes->getDateStatus($part);
+                my $weight = $curRes->weight($part);
+                my $problemstatus = $curRes->problemstatus($part);
 
-                my $dateStatus = $curRes->getDateStatus($part);
-                if ($status != $curRes->OPEN_LATER) {
-                    $totalPossible++;
+                if ($curRes->solved($part) eq 'excused') {
+                    next;
                 }
+		if ($showPoints) {
+		    my $score = 0;
+		    # If we're not telling status and the answer date isn't passed yet, 
+		    # it's an "attempted" point
+		    if ((($problemstatus eq 'no') ||
+                         ($problemstatus eq 'no_feedback_ever')) &&
+			($dateStatus != $curRes->ANSWER_OPEN)) {
+			my $status = $curRes->simpleStatus($part);
+			if ($status == $curRes->ATTEMPTED) {
+			    $partsAttempted += $weight;
+			    $totalAttempted += $partsAttempted;
+			}
+		    } else {
+			$score = &Apache::grades::compute_points($weight, $curRes->awarded($part));
+		    }
+		    $partsRight += $score;
+		    $totalRight += $score;
+		    $partsCount += $weight;
+
+		    if ($curRes->opendate($part) < $now) {
+			$totalPossible += $weight;
+		    }
+		    $totalParts += $weight;
+		} else {
+		    my $status = $curRes->simpleStatus($part);
+		    my $thisright = 0;
+		    $partsCount++;
+		    if ($status == $curRes->CORRECT ||
+			$status == $curRes->PARTIALLY_CORRECT ) {
+			$partsRight++;
+			$totalRight++;
+			$thisright = 1;
+		    }
+
+		    if ($status == $curRes->ATTEMPTED) {
+			$partsAttempted++;
+			$totalAttempted++;
+		    }
+		    
+		    $totalParts++;
+		    if ($curRes->opendate($part) < $now) {
+			$totalPossible++;
+		    }
+		}
             }
-            
+
+            if ($depth == 1) { # in top-level only
+		$topLevelParts += $partsCount;
+		$topLevelRight += $partsRight;
+		$topLevelAttempted += $partsAttempted;
+	    }
+
             # Crawl down stack and record parts correct and total
             for my $res (@{$stack}) {
                 if (ref($res) && $res->is_map()) {
                     if (!defined($res->{DATA}->{CHILD_PARTS})) {
                         $res->{DATA}->{CHILD_PARTS} = 0;
                         $res->{DATA}->{CHILD_CORRECT} = 0;
+			$res->{DATA}->{CHILD_ATTEMPTED} = 0;
                     }
                     
-                    $res->{DATA}->{CHILD_PARTS} += scalar(@{$parts});
+                    $res->{DATA}->{CHILD_PARTS} += $partsCount;
                     $res->{DATA}->{CHILD_CORRECT} += $partsRight;
+		    $res->{DATA}->{CHILD_ATTEMPTED} += $partsAttempted;
                 }
             }
         }
         $curRes = $iterator->next();
     }
+    return ($navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,
+            $topLevelParts,$topLevelRight,$topLevelAttempted);
+}
 
-    $iterator = $navmap->getIterator(undef, undef, undef, 1);
-    my $depth = 1;
-    $iterator->next(); # ignore first BEGIN_MAP
-    my $curRes = $iterator->next();
+#
+# Outputting everything.
+#
+
+sub outputTable {
+
+    my ($r,$showPoints,$notshowTotals,$nostdtotals,$navmap,$totalParts,$totalPossible,
+        $totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=@_;
 
     my @start = (255, 255, 192);
     my @end   = (0, 192, 0);
 
     my $indentString = '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
 
-    my $unaccountedTotal = $totalParts;
-    my $unaccountedCorrect = $totalRight;
-
     # Second pass: Print the maps.
-    $r->print('<table cellspacing="3" border="2"><tr><td align="center"><b>Sequence</b></td>');
-    $r->print('<td align="center">Correct / Total</td><tr>' . "\n\n");
+    $r->print(&Apache::loncommon::start_data_table()
+             .&Apache::loncommon::start_data_table_header_row()
+             .'<th>'.&mt('Folder').'</th>');
+    my $title = &mt($showPoints ? "Points Scored" : "Done");
+    if ($totalAttempted) {
+        $title .= " / " . &mt("Attempted");
+    }
+    $r->print("<th>$title".($notshowTotals?'':" / ".&mt('Total')).'</th>'
+             .&Apache::loncommon::end_data_table_header_row());
+#
+# Output of folder scores
+#
+
+    my $iterator = $navmap->getIterator(undef, undef, undef, 1);
+    my $depth = 1;
+    $iterator->next(); # ignore first BEGIN_MAP
+    my $curRes = $iterator->next();
+
     while ($depth > 0) {
         if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
         if ($curRes == $iterator->END_MAP()) { $depth--; }
 
         if (ref($curRes) && $curRes->is_map()) {
-            my $stack = $iterator->getStack();
-            my $src = Apache::lonnavmaps::getLinkForResource($stack);
-            my $srcHasQuestion = $src =~ /\?/;
-            my $link = $src.
-                ($srcHasQuestion?'&':'?') .
-                'symb='.&Apache::lonnet::escape($curRes->symb()).
-                '"';
             my $title = $curRes->compTitle();
             
             my $correct = $curRes->{DATA}->{CHILD_CORRECT};
             my $total = $curRes->{DATA}->{CHILD_PARTS};
-
-            $unaccountedTotal -= $total;
-            $unaccountedCorrect -= $correct;
+	    my $attempted = $curRes->{DATA}->{CHILD_ATTEMPTED};
 
             if ($total > 0) {
                 my $ratio;
                 $ratio = $correct / $total;
-                my $color = mixColors(\@start, \@end, $ratio);
-                $r->print("<tr><td bgcolor='$color'>");
+                my $color = &mixColors(\@start, \@end, $ratio);
+                $r->print(&Apache::loncommon::start_data_table_row()
+                         .'<td style="background-color:'.$color.';">');
                 
-                for (my $i = 1; $i < $depth; $i++) { $r->print($indentString); }
+		my $thisIndent = '';
+                for (my $i = 1; $i < $depth; $i++) { $thisIndent .= $indentString; }
                 
-                $r->print("<a href='$link'>$title</a></td>");
-                $r->print("<td align='center'>$correct / $total</td></tr>\n");
+                $r->print("$thisIndent$title</td>");
+		if ($totalAttempted) {
+		    $r->print('<td valign="top">'
+                             .$thisIndent
+                             .'<span class="LC_nobreak">'
+                             .$correct.' / '.$attempted.($notshowTotals?'':' / '.$total)
+                             .'</span></td>'
+                             .&Apache::loncommon::end_data_table_row()
+                    );
+		} else {
+		    $r->print('<td valign="top">'
+                             .$thisIndent
+                             .'<span class="LC_nobreak">'
+                             .$correct.($notshowTotals?'':' / '.$total)
+                             .'</span></td>'
+                             .&Apache::loncommon::end_data_table_row());
+		}
             }
         }
 
@@ -211,26 +469,112 @@ HEADER
     }
 
     # If there were any problems at the top level, print an extra "catchall"
-    if ($unaccountedTotal > 0) {
-        my $ratio = $unaccountedCorrect / $unaccountedTotal;
-        my $color = mixColors(\@start, \@end, $ratio);
-        $r->print("<tr><td bgcolor='$color'>");
-        $r->print("Problems Not Contained In Sequences</td><td align='center'>");
-        $r->print("$unaccountedCorrect / $unaccountedTotal</td></tr>");
+    if ($topLevelParts > 0) {
+        my $ratio = $topLevelRight / $topLevelParts;
+        my $color = &mixColors(\@start, \@end, $ratio);
+        $r->print(&Apache::loncommon::start_data_table_row()
+                 .'<td style="background-color:'.$color.';">');
+        $r->print(&mt("Problems Not Contained In A Folder")."</td><td>");
+        $r->print("$topLevelRight / $topLevelParts</td>"
+                 .&Apache::loncommon::end_data_table_row());
     }
 
-    my $maxHelpLink = Apache::loncommon::help_open_topic("Quick_Grades_Possibly_Correct");
+#
+# show totals (if applicable), close table
+#
+    if ($showPoints) {
+        unless ($nostdtotals) {
+	    my $maxHelpLink = &Apache::loncommon::help_open_topic("Quick_Grades_Possibly_Correct");
+
+	    $title = $showPoints ? "Points" : "Parts Done";
+	    my $totaltitle = $showPoints ? &mt("Awarded Total Points") : &mt("Total Parts Done");
+	    $r->print(&Apache::loncommon::start_data_table_row()
+                     .'<td colspan="2" align="right">'.$totaltitle.': <b>'.$totalRight.'</b><br />');
+	    $r->print(&mt('Max Possible To Date')." $maxHelpLink: <b>$totalPossible</b><br />");
+	    $title = $showPoints ? "Points" : "Parts";
+	    $r->print(&mt("Total $title In Course").': <b>'.$totalParts.'</b></td>'
+                     .&Apache::loncommon::end_data_table_row());
+        }
+    }
 
-    $r->print("<tr><td colspan='2' align='right'>Total Parts Correct: <b>$totalRight</b><br>");
-    $r->print("Max Possible To Date $maxHelpLink: <b>$totalPossible</b><br>");
-    $r->print("Total Parts In Course: <b>$totalParts</b></td></tr>\n\n");
+    $r->print(&Apache::loncommon::end_data_table());
+    return;
+}
 
+sub startpage {
+    my ($r,$showPoints) = @_;
+    my $title = "Grading and Statistics";#$showPoints ? "Points Display" : "Completed Problems Display";
+    my $brcrum = [{href=>"/adm/quickgrades",text => "Points Display"}];
+    $r->print(&Apache::loncommon::start_page($title,undef,
+                                            {'bread_crumbs' => $brcrum})
+             );
+}
 
-    $r->print("</table></body></html>");
+sub startGradeScreen {
+    my ($r)=@_;
 
-    $navmap->untieHashes();
+    my $showPoints =
+        $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard';
+    my $hidetotals =
+        $env{'course.'.$env{'request.course.id'}.'.hidetotals'};
+    my $notshowSPRSlink =
+        (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'external')
+      || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals'));
+    my $notshowTotals =
+        $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals';
+    my $showSPRSlink =
+        $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'spreadsheet';
+
+    my $allowed_to_view = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
+    if ((!$allowed_to_view) && ($env{'request.course.sec'} ne '')) {
+        $allowed_to_view = &Apache::lonnet::allowed('vgr',
+                               "$env{'request.course.id'}/$env{'request.course.sec'}");
+    }
 
-    return OK;
+    my $allowed_to_edit = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
+    if ((!$allowed_to_edit) && ($env{'request.course.sec'} ne '')) {
+        $allowed_to_edit = &Apache::lonnet::allowed('mgr',
+                               "$env{'request.course.id'}/$env{'request.course.sec'}");
+    }
+
+    if ($allowed_to_view) {
+        my @notes;
+        push(@notes,&mt('Students do not see total points.')) if ($notshowTotals);
+        push(@notes,&mt('Students do not see link to spreadsheet.')) if ($notshowSPRSlink);
+        push(@notes,&mt('Students will see points based on problem weights.')) if ($showPoints);
+        if (($showPoints) && ($hidetotals ne '')) {
+            if ($hidetotals eq 'all') {
+                push(@notes,&mt('Students do not see course totals.'));
+            } else {
+                my @secs = split(/,/,$hidetotals);
+                if (@secs == 1) {
+                    push(@notes,&mt('Students in section [_1] do not see course totals.',
+                                    $hidetotals));
+                } elsif (@secs > 1) {
+                    push(@notes,&mt('Students in sections [_1] do not see course totals.',
+                                    join(', ',@secs)));
+                }
+            }
+        }
+        push(@notes,&mt('Students will see link to spreadsheet.')) if ($showSPRSlink);
+        push(@notes,&Apache::lonhtmlcommon::coursepreflink(&mt('Grade display settings'),'grading'));
+        $r->print(&Apache::loncommon::head_subbox(join('&nbsp;&nbsp;',@notes)));
+    } elsif (!$allowed_to_edit) {
+        if (!$showPoints && !$notshowSPRSlink ) {
+            $r->print(&Apache::loncommon::head_subbox(
+                      &mt('This screen shows how many problems (or problem parts) you have completed'
+                     .', and how many you have not yet done.'
+                     .' You can also look at [_1]a detailed score sheet[_2].'
+                     ,'<a href="/adm/studentcalc">','</a>')));
+        }
+    }
+    return;
+}
+
+sub endGradeScreen {
+    my ($r)=@_;
+    $r->print(&Apache::loncommon::end_page());
+    return;
 }
 
 # Pass this two refs to arrays for the start and end color, and a number
@@ -241,15 +585,16 @@ sub mixColors {
     my $end = shift;
     my $ratio = shift;
     
+    my ($a,$b);
     my $final = "";
-    my $a = $start->[0]; my $b = $end->[0];
+    $a = $start->[0]; $b = $end->[0];
     my $mix1 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
-    my $a = $start->[1]; my $b = $end->[1];
+    $a = $start->[1]; $b = $end->[1];
     my $mix2 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
-    my $a = $start->[2]; my $b = $end->[2];
+    $a = $start->[2]; $b = $end->[2];
     my $mix3 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
 
-    my $final = sprintf "%2x%2x%2x", $mix1, $mix2, $mix3;
+    $final = sprintf "%02x%02x%02x", $mix1, $mix2, $mix3;
     return "#" . $final;
 }