--- loncom/interface/lonnavmaps.pm	2016/10/27 15:17:42	1.509.2.4
+++ loncom/interface/lonnavmaps.pm	2024/07/03 03:07:58	1.509.2.17
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavmaps.pm,v 1.509.2.4 2016/10/27 15:17:42 raeburn Exp $
+# $Id: lonnavmaps.pm,v 1.509.2.17 2024/07/03 03:07:58 raeburn Exp $
 
 #
 # Copyright Michigan State University Board of Trustees
@@ -342,7 +342,7 @@ user into thinking that if the sequence
 under it; for example, see the "Show Uncompleted Homework" view on the
 B<NAV> screen.
 
-=item * B<suppressNavmaps>: default: false
+=item * B<suppressNavmap>: default: false
 
 If true, will not display Navigate Content resources. 
 
@@ -486,7 +486,7 @@ use Apache::lonlocal;
 use Apache::lonnet;
 use Apache::lonmap;
 
-use POSIX qw (floor strftime);
+use POSIX qw (ceil floor strftime);
 use Time::HiRes qw( gettimeofday tv_interval );
 use LONCAPA;
 use DateTime();
@@ -534,6 +534,10 @@ my %colormap =
       $resObj->EXCUSED                => '#3333FF',
       $resObj->PAST_DUE_ANSWER_LATER  => '',
       $resObj->PAST_DUE_NO_ANSWER     => '',
+      $resObj->PAST_DUE_ATMPT_ANS     => '',
+      $resObj->PAST_DUE_ATMPT_NOANS   => '',
+      $resObj->PAST_DUE_NO_ATMT_ANS   => '',
+      $resObj->PAST_DUE_NO_ATMT_NOANS => '',
       $resObj->ANSWER_OPEN            => '#006600',
       $resObj->OPEN_LATER             => '',
       $resObj->TRIES_LEFT             => '',
@@ -577,7 +581,11 @@ sub getLinkForResource {
 	    my $anchor;
 	    if ($res->is_page()) {
 		foreach my $item (@$stack) { if (defined($item)) { $anchor = $item; }  }
-		$anchor=&escape($anchor->shown_symb());
+		if ($anchor->encrypted() && !&advancedUser()) {
+		    $anchor='LC_'.$anchor->id();
+		} else {
+		    $anchor=&escape($anchor->shown_symb());
+		}
 		return ($res->link(),$res->shown_symb(),$anchor);
 	    }
             # in case folder was skipped over as "only sequence"
@@ -643,6 +651,9 @@ sub getDescription {
             } elsif ($slot_status == $res->RESERVABLE) {
                 $slotmsg = &mt('Reservable, reservations close [_1]',
                            timeToHumanString($slot_time,'end'));
+            } elsif ($slot_status == $res->NEEDS_CHECKIN) {
+                $slotmsg = &mt('Reserved, check-in needed - ends [_1]',
+                           timeToHumanString($slot_time,'end'));
             } elsif ($slot_status == $res->RESERVABLE_LATER) {
                 $slotmsg = &mt('Reservable, reservations open [_1]',
                            timeToHumanString($slot_time,'start'));
@@ -672,10 +683,10 @@ sub getDescription {
             return &Apache::lonhtmlcommon::direct_parm_link(&mt("Open, no due date"),$res->symb(),'duedate',$part).$slotinfo;
         }
     }
-    if ($status == $res->PAST_DUE_ANSWER_LATER) {
+    if (($status == $res->PAST_DUE_ANSWER_LATER) || ($status == $res->PAST_DUE_ATMPT_ANS) || ($status == $res->PAST_DUE_NO_ATMT_ANS)) {
         return &mt("Answer open [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($answer,'start'),$res->symb(),'answerdate',$part));
     }
-    if ($status == $res->PAST_DUE_NO_ANSWER) {
+    if (($status == $res->PAST_DUE_NO_ANSWER) || ($status == $res->PAST_DUE_ATMPT_NOANS) || ($status == $res->PAST_DUE_NO_ATMT_NOANS)) {
 	if ($res->is_practice()) {
 	    return &mt("Closed [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'start'),$res->symb(),'answerdate,duedate',$part));
 	} else {
@@ -938,7 +949,28 @@ sub render_resource {
     # links to open and close the folder
 
     my $whitespace = $location.'/whitespace_21.gif';
-    my $linkopen = "<img src='$whitespace' alt='' />"."<a href=\"$link\">";
+    my $linkopen = "<img src='$whitespace' alt='' />";
+    my $nomodal;
+    if (($params->{'modalLink'}) && (!$resource->is_sequence())) {
+        if ($link =~m{^(?:|/adm/wrapper)/ext/([^#]+)}) {
+            my $exturl = $1;
+            if (($ENV{'SERVER_PORT'} == 443) && ($exturl !~ /^https:/)) {
+                $nomodal = 1;
+            }
+        } elsif (($link eq "/public/$LONCAPA::match_domain/$LONCAPA::match_courseid/syllabus") &&
+                 ($env{'request.course.id'}) && ($ENV{'SERVER_PORT'} == 443) &&
+                 ($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) {
+             $nomodal = 1;
+        }
+        my $esclink = &js_escape($link);
+        if ($nomodal) {
+            $linkopen .= "<a href=\"#\" onclick=\"javascript:window.open('$esclink','resourcepreview','height=400,width=500,scrollbars=1,resizable=1,menubar=0,location=1'); return false;\" />";
+        } else {
+            $linkopen .= "<a href=\"$link\" onclick=\"javascript:openMyModal('$esclink',600,500,'yes','true'); return false;\">";
+        }
+    } else {
+        $linkopen .= "<a href=\"$link\">";
+    }
     my $linkclose = "</a>";
 
     # Default icon: unknown page
@@ -967,8 +999,12 @@ sub render_resource {
         if ($it->{CONDITION}) {
             $nowOpen = !$nowOpen;
         }
-	
-	my $folderType = $resource->is_sequence() ? 'folder' : 'page';
+	my $folderType;
+	if (&advancedUser() && $resource->is_missing_map()) {
+	    $folderType = 'none';
+	} else {
+	    $folderType = $resource->is_sequence() ? 'folder' : 'page';
+	}
         my $title=$resource->title;
 		$title=~s/\"/\&qout;/g;
         if (!$params->{'resource_no_folder_link'}) {
@@ -992,11 +1028,15 @@ sub render_resource {
             # Don't allow users to manipulate folder
             $icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif';
             $icon = "<img class=\"LC_space\" src='$whitespace' alt='' />"."<img class=\"LC_contentImage\" src='$location/$icon' alt=\"".($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" />";
-
-            $linkopen = "";
-            $linkclose = "";
+            if ($params->{'caller'} eq 'sequence') {
+                $linkopen = "<a href=\"$link\">";
+            } else {
+                $linkopen = "";
+                $linkclose = "";
+            }
         }
-        if ((&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
+        if (((&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) ||
+             (&Apache::lonnet::allowed('cev',$env{'request.course.id'}))) &&
             ($resource->symb=~/\_\_\_[^\_]+\_\_\_uploaded/)) {
             if (!$params->{'map_no_edit_link'}) {
                 my $icon = &Apache::loncommon::lonhttpdurl('/res/adm/pages').'/editmap.png';
@@ -1062,10 +1102,19 @@ sub render_resource {
     }
 
     if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {
-        $result .= "$curMarkerBegin<a href=\"$link\">$title$partLabel</a>$curMarkerEnd$editmapLink$nonLinkedText</td>";
-    } else {
-        $result .= "$curMarkerBegin$linkopen$title$partLabel</a>$curMarkerEnd$editmapLink$nonLinkedText</td>";
+        $linkclose = '</a>';
+        if ($params->{'modalLink'}) {
+            my $esclink = &js_escape($link);
+            if ($nomodal) {
+                $linkopen = "<a href=\"#\" onclick=\"javascript:window.open('$esclink','resourcepreview','height=400,width=500,scrollbars=1,resizable=1,menubar=0,location=1'); return false;\" />";
+            } else {
+                $linkopen = "<a href=\"$link\" onclick=\"javascript:openMyModal('$esclink',600,500,'yes','true'); return false;\">";
+            }
+        } else {
+            $linkopen = "<a href=\"$link\">";
+        }
     }
+    $result .= "$curMarkerBegin$linkopen$title$partLabel$linkclose$curMarkerEnd$editmapLink$nonLinkedText</td>";
 
     return $result;
 }
@@ -1356,10 +1405,11 @@ sub render {
             my $currenturl = $env{'form.postdata'};
             #$currenturl=~s/^http\:\/\///;
             #$currenturl=~s/^[^\/]+//;
-            
-            $here = $jump = &Apache::lonnet::symbread($currenturl);
+            unless ($args->{'caller'} eq 'sequence') { 
+                $here = $jump = &Apache::lonnet::symbread($currenturl);
+            }
 	}
-	if ($here eq '') {
+	if (($here eq '') && ($args->{'caller'} ne 'sequence')) { 
 	    my $last;
 	    if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                     &GDBM_READER(),0640)) {
@@ -1373,11 +1423,15 @@ sub render {
         my $mapIterator = $navmap->getIterator(undef, undef, undef, 1);
         my $curRes;
         my $found = 0;
+        my $here_is_navmaps = 0;
+        if ($here =~ m{___\d+___adm/navmaps$}) {
+            $here_is_navmaps = 1;
+        }
         
         # We only need to do this if we need to open the maps to show the
         # current position. This will change the counter so we can't count
         # for the jump marker with this loop.
-        while ($here && ($curRes = $mapIterator->next()) && !$found) {
+        while ($here && ($curRes = $mapIterator->next()) && !$found && !$here_is_navmaps) {
             if (ref($curRes) && $curRes->symb() eq $here) {
                 my $mapStack = $mapIterator->getStack();
                 
@@ -1419,10 +1473,13 @@ sub render {
         if ($args->{'iterator_map'}) {
             my $map = $args->{'iterator_map'};
             $map = $navmap->getResourceByUrl($map);
-            my $firstResource = $map->map_start();
-            my $finishResource = $map->map_finish();
-
-            $args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition);
+            if (ref($map)) {
+                my $firstResource = $map->map_start();
+                my $finishResource = $map->map_finish();
+                $args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition);
+            } else {
+                return;
+            }
         } else {
             $args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition,undef,$args->{'include_top_level_map'});
         }
@@ -1491,9 +1548,6 @@ sub render {
 		'&amp;here='.&escape($here);
 	    $text='Open all folders';
         }
-        if ($env{'form.register'}) {
-            $link .= '&amp;register='.$env{'form.register'};
-        }
 	if ($args->{'caller'} eq 'navmapsdisplay') {
             unless ($args->{'notools'}) {
                 &add_linkitem($args->{'linkitems'},'changefolder',
@@ -1517,9 +1571,6 @@ sub render {
 	<input type="hidden" name="navurl" value="$querystr" />
 	<input type="hidden" name="navtime" value="$time" />
 END
-        if ($env{'form.register'}) {
-            $result .= '<input type="hidden" name="register" value="'.$env{'form.register'}.'" />';
-        }
         if ($args->{'sort'} eq 'discussion') { 
 	    my $totdisc = 0;
 	    my $haveDisc = '';
@@ -1541,7 +1592,8 @@ END
 	$result.='</form>';
     }
     if (($args->{'caller'} eq 'navmapsdisplay') &&
-        (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
+        ((&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) ||
+         (&Apache::lonnet::allowed('cev',$env{'request.course.id'})))) {
         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
         if ($env{'course.'.$env{'request.course.id'}.'.url'} eq 
@@ -1684,6 +1736,28 @@ END
 	undef($args->{'sort'});
     }
 
+    # Determine if page will be served with https in case
+    # it contains a syllabus which uses an external URL
+    # which points at an http site.
+
+    my ($is_ssl,$cdom,$cnum,$hostname);
+    if ($ENV{'SERVER_PORT'} == 443) {
+        $is_ssl = 1;
+        if ($r) {
+            $hostname = $r->hostname();
+        } else {
+            $hostname = $ENV{'SERVER_NAME'};
+        }
+    }
+    if ($env{'request.course.id'}) {
+        $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+        $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+    }
+
+    my $inhibitmenu;
+    if ($args->{'modalLink'}) {
+        $inhibitmenu = '&amp;inhibitmenu=yes';
+    }
 
     while (1) {
 	if ($args->{'sort'}) {
@@ -1817,11 +1891,35 @@ END
 		$stack=$it->getStack();
 	    }
 	    ($src,$symb,$anchor)=getLinkForResource($stack);
+            my $srcHasQuestion = $src =~ /\?/;
+            if ($env{'request.course.id'}) {
+                if (($is_ssl) && ($src =~ m{^\Q/public/$cdom/$cnum/syllabus\E($|\?)}) &&
+                    ($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) {
+                    unless ((&Apache::lonnet::uses_sts()) || (&Apache::lonnet::waf_allssl($hostname))) {
+                        if ($hostname ne '') {
+                            $src = 'http://'.$hostname.$src;
+                        }
+                        $src .= ($srcHasQuestion? '&amp;' : '?') . 'usehttp=1';
+                        $srcHasQuestion = 1;
+                    }
+                } elsif (($is_ssl) && ($src =~ m{^\Q/adm/wrapper/ext/\E(?!https:)})) {
+                    unless ((&Apache::lonnet::uses_sts()) || (&Apache::lonnet::waf_allssl($hostname))) {
+                        if ($hostname ne '') {
+                            $src = 'http://'.$hostname.$src;
+                        }
+                        $src .= ($srcHasQuestion? '&amp;' : '?') . 'usehttp=1';
+                        $srcHasQuestion = 1;
+                    }
+                }
+            }
 	    if (defined($anchor)) { $anchor='#'.$anchor; }
-	    my $srcHasQuestion = $src =~ /\?/;
-	    $args->{"resourceLink"} = $src.
-		($srcHasQuestion?'&amp;':'?') .
-		'symb=' . &escape($symb).$anchor;
+            if (($args->{'caller'} eq 'sequence') && ($curRes->is_map())) {
+                $args->{"resourceLink"} = $src.($srcHasQuestion?'&amp;':'?') .'navmap=1';
+            } else {
+	        $args->{"resourceLink"} = $src.
+		    ($srcHasQuestion?'&amp;':'?') .
+		    'symb=' . &escape($symb).$inhibitmenu.$anchor;
+            }
 	}
         # Now, we've decided what parts to show. Loop through them and
         # show them.
@@ -1849,7 +1947,7 @@ END
                     $currentJumpDelta) {
                     # Jam the anchor after the <td> tag;
                     # necessary for valid HTML (which Mozilla requires)
-                    $colHTML =~ s/\>/\>\<a name="curloc" \/\>/;
+                    $colHTML =~ s/\>/\>\<a name="curloc" \>\<\/a\>/;
                     $displayedJumpMarker = 1;
                 }
                 $result .= $colHTML . "\n";
@@ -2235,7 +2333,7 @@ sub generate_email_discuss_status {
     foreach my $msgid (@keys) {
 	if ((!$emailstatus{$msgid}) || ($emailstatus{$msgid} eq 'new')) {
             my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid,
-                $symb,$error) = &Apache::lonmsg::unpackmsgid($msgid);
+                $symb,$error) = &Apache::lonmsg::unpackmsgid(&LONCAPA::escape($msgid));
             &Apache::lonenc::check_decrypt(\$symb); 
             if (($fromcid ne '') && ($fromcid ne $cid)) {
                 next;
@@ -2732,6 +2830,116 @@ sub parmval_real {
     if (defined($pack_def)) { return [$pack_def,'resource']; }
     return [''];
 }
+
+sub recurseup_maps {
+    my ($self,$mapname) = @_;
+    my @recurseup;
+    if ($mapname) {
+        my $res = $self->getResourceByUrl($mapname);
+        if (ref($res)) {
+            my @pcs = split(/,/,$res->map_hierarchy());
+            shift(@pcs);
+            if (@pcs) {
+                @recurseup = map { &Apache::lonnet::declutter($self->getByMapPc($_)->src()); } reverse(@pcs);
+            }
+        }
+    }
+    return @recurseup;
+}
+
+sub recursed_crumbs {
+    my ($self,$mapurl,$restitle) = @_;
+    my (@revmapinfo,@revmapres);
+    my $mapres = $self->getResourceByUrl($mapurl);
+    if (ref($mapres)) {
+        @revmapres = map { $self->getByMapPc($_); } split(/,/,$mapres->map_breadcrumbs());
+        shift(@revmapres);
+    }
+    my $allowedlength = 60;
+    my $minlength = 5;
+    my $allowedtitle = 30;
+    if (($env{'environment.icons'} eq 'iconsonly') && (!$env{'browser.mobile'})) {
+        $allowedlength = 100;
+        $allowedtitle = 70;
+    }
+    if (length($restitle) > $allowedtitle) {
+        $restitle = &truncate_crumb_text($restitle,$allowedtitle);
+    }
+    my $totallength = length($restitle);
+    my @links;
+
+    foreach my $map (@revmapres) {
+        my $pc = $map->map_pc();
+        next if ((!$pc) || ($pc == 1));
+        push(@links,$map);
+        my $text = $map->title();
+        if ($text eq '') {
+            $text = '...';
+        }
+        push(@revmapinfo,{'href' => $env{'request.use_absolute'}.$map->link().'?navmap=1','text' => $text,'no_mt' => 1,});
+        $totallength += length($text);
+    }
+    my $numlinks = scalar(@links);
+    if ($numlinks) {
+        if ($totallength - $allowedlength > 0) {
+            my $available = $allowedlength - length($restitle);
+            my $avg = POSIX::ceil($available/$numlinks);
+            if ($avg < $minlength) {
+                $avg = $minlength;
+            }
+            @revmapinfo = ();
+            foreach my $map (@links) {
+                my $title = $map->title();
+                if ($title eq '') {
+                    $title = '...';
+                }
+                my $showntitle = &truncate_crumb_text($title,$avg);
+                if ($showntitle ne '') {
+                    push(@revmapinfo,{'href' => $env{'request.use_absolute'}.$map->link().'?navmap=1','text' => $showntitle,'no_mt' => 1,});
+                }
+            }
+        }
+    }
+    if ($restitle ne '') {
+        push(@revmapinfo,{'text' => $restitle, 'no_mt' => 1});
+    }
+    return @revmapinfo;
+}
+
+sub truncate_crumb_text {
+    my ($title,$limit) = @_;
+    my $showntitle = '';
+    if (length($title) > $limit) {
+        my @words = split(/\b\s*/,$title);
+        if (@words == 1) {
+            $showntitle = substr($title,0,$limit).' ...';
+        } else {
+            my $linklength = 0;
+            my $num = 0;
+            foreach my $word (@words) {
+                $linklength += 1+length($word);
+                if ($word eq '-') {
+                    $showntitle =~ s/ $//;
+                    $showntitle .= $word;
+                } elsif ($linklength > $limit) {
+                    if ($num < @words) {
+                        $showntitle .= $word.' ...';
+                        last;
+                    } else {
+                        $showntitle .= $word;
+                    }
+                } else {
+                    $showntitle .= $word.' ';
+                }
+            }
+            $showntitle =~ s/ $//;
+        }
+        return $showntitle;
+    } else {
+        return $title;
+    }
+}
+
 #
 #  Determines the open/close dates for printing a map that
 #  encloses a resource.
@@ -2812,6 +3020,20 @@ sub get_mapparam {
 	if (defined($$useropt{$courselevel})) {
 	    return $$useropt{$courselevel};
 	}
+        if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+            unless ($recursed) {
+                @recurseup = $self->recurseup_maps($mapname);
+                $recursed = 1;
+            }
+            foreach my $item (@recurseup) {
+                my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
+                if (defined($$useropt{$norecursechk})) {
+                    if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                        return $$useropt{$norecursechk};
+                    }
+                }
+            }
+        }
     }
 
     # Check course -- group
@@ -2822,6 +3044,20 @@ sub get_mapparam {
 	if (defined($$courseopt{$grplevel})) {
 	    return $$courseopt{$grplevel};
 	}
+        if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+            unless ($recursed) {
+                @recurseup = $self->recurseup_maps($mapname);
+                $recursed = 1;
+            }
+            foreach my $item (@recurseup) {
+                my $norecursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(all).'.$what;
+                if (defined($$courseopt{$norecursechk})) {
+                    if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                        return $$courseopt{$norecursechk};
+                    }
+                }
+            }
+        }
     }
 
     # Check course -- section
@@ -2834,6 +3070,20 @@ sub get_mapparam {
 	if (defined($$courseopt{$seclevel})) {
 	    return $$courseopt{$seclevel};
 	}
+        if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+            unless ($recursed) {
+                @recurseup = $self->recurseup_maps($mapname);
+                $recursed = 1;
+            }
+            foreach my $item (@recurseup) {
+                my $norecursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(all).'.$what;
+                if (defined($$courseopt{$norecursechk})) {
+                    if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                        return $$courseopt{$norecursechk};
+                    }
+                }
+            }
+        }
     }
     # Check the map parameters themselves:
 
@@ -2852,6 +3102,20 @@ sub get_mapparam {
 	if (defined($$courseopt{$courselevel})) {
 	    return $$courseopt{$courselevel};
 	}
+        if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+            unless ($recursed) {
+                @recurseup = $self->recurseup_maps($mapname);
+                $recursed = 1;
+            }
+            foreach my $item (@recurseup) {
+                my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
+                if (defined($$courseopt{$norecursechk})) {
+                    if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                        return $$courseopt{$norecursechk};
+                    }
+                }
+            }
+        }
     }
     return undef;		# Unefined if we got here.
 }
@@ -3549,7 +3813,8 @@ sub next {
     # That ends the main iterator logic. Now, do we want to recurse
     # down this map (if this resource is a map)?
     if ( ($self->{HERE}->is_sequence() || (!$closeAllPages && $self->{HERE}->is_page())) &&
-        (defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) {
+        (defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION}) &&
+        ($env{'request.role.adv'} || !$self->{HERE}->randomout())) {
         $self->{RECURSIVE_ITERATOR_FLAG} = 1;
         my $firstResource = $self->{HERE}->map_start();
         my $finishResource = $self->{HERE}->map_finish();
@@ -4218,6 +4483,11 @@ sub is_sequence {
     return $self->navHash("is_map_", 1) && 
     $self->navHash("map_type_" . $self->map_pc()) eq 'sequence';
 }
+sub is_missing_map {
+    my $self=shift;
+    return $self->navHash("is_map_", 1) &&
+    $self->navHash("map_type_" . $self->map_pc()) eq 'none';
+}
 sub is_survey {
     my $self = shift();
     my $part = shift();
@@ -4298,6 +4568,12 @@ Returns a string with a comma-separated
 for the hierarchy of maps containing a map, with the top level
 map first, then descending to deeper levels, with the enclosing map last.
 
+=item * B<map_breadcrumbs>:
+
+Same as map_hierarchy, except maps containing only a single itemm if
+it's a map, or containing no items are omitted, unless it's the top
+level map (map_pc = 1), which is always included.
+
 =back
 
 =cut
@@ -4333,6 +4609,11 @@ sub map_hierarchy {
     my $pc = $self->map_pc();
     return $self->navHash("map_hierarchy_$pc", 0);
 }
+sub map_breadcrumbs {
+    my $self = shift;
+    my $pc = $self->map_pc();
+    return $self->navHash("map_breadcrumbs_$pc", 0);
+}
 
 #####
 # Property queries
@@ -5060,7 +5341,6 @@ The problem will be opened later.
 
 Open and not yet due.
 
-
 =item * B<PAST_DUE_ANSWER_LATER>:
 
 The due date has passed, but the answer date has not yet arrived.
@@ -5073,6 +5353,26 @@ The due date has passed and there is no
 
 The answer date is here.
 
+=item * B<NOTHING_SET>:
+
+No dates have been set for this problem at all.
+
+=item * B<PAST_DUE_ATMPT_ANS>:
+
+The due date has passed, feedback is suppressed, the problem was attempted, and the answer date has not yet arrived.
+
+=item * B<PAST_DUE_ATMPT_NOANS>:
+
+The due date has passed, feedback is suppressed, the problem was attempted, and there is no answer opening date set.
+
+=item * B<PAST_DUE_NO_ATMT_ANS>:
+
+The due date has passed, feedback is suppressed, the problem was not attempted, and the answer date has not yet arrived.
+
+=item * B<PAST_DUE_NO_ATMT_NOANS>:
+
+The due date has passed, feedback is suppressed, the problem was not attempted, and there is no answer opening date set.
+
 =item * B<NETWORK_FAILURE>:
 
 The information is unknown due to network failure.
@@ -5088,6 +5388,10 @@ sub PAST_DUE_NO_ANSWER     { return 2; }
 sub PAST_DUE_ANSWER_LATER  { return 3; }
 sub ANSWER_OPEN            { return 4; }
 sub NOTHING_SET            { return 5; }
+sub PAST_DUE_ATMPT_ANS     { return 6; }
+sub PAST_DUE_ATMPT_NOANS   { return 7; }
+sub PAST_DUE_NO_ATMT_ANS   { return 8; }
+sub PAST_DUE_NO_ATMT_NOANS { return 9; }
 sub NETWORK_FAILURE        { return 100; }
 
 # getDateStatus gets the date status for a given problem part. 
@@ -5277,6 +5581,26 @@ set.
 The problem is past due, not considered correct, and an answer date in
 the future is set.
 
+=item * B<PAST_DUE_ATMPT_ANS>:
+
+The problem is past due, feedback is suppressed, the problem was
+attempted and an answer date in the future is set.
+
+=item * B<PAST_DUE_ATMPT_NOANS>:
+
+The problem is past due, feedback is suppressed, the problem was
+attempted and no answer date is set.
+
+=item * B<PAST_DUE_NO_ATMT_ANS>:
+
+The problem is past due, feedback is suppressed, the problem was
+not attempted and an answer date in the future is set.
+
+=item * B<PAST_DUE_NO_ATMT_NOANS>:
+
+The problem is past due, feedback is suppressed, the problem was
+not attempted and no answer date is set.
+
 =item * B<ANSWER_OPEN>:
 
 The problem is past due, not correct, and the answer is now available.
@@ -5359,7 +5683,18 @@ sub status {
     # There are a few whole rows we can dispose of:
     if ($completionStatus == CORRECT ||
         $completionStatus == CORRECT_BY_OVERRIDE ) {
-	if ( $suppressFeedback ) { return ANSWER_SUBMITTED }
+	if ( $suppressFeedback ) {
+            if ($dateStatus == PAST_DUE_ANSWER_LATER ||
+                $dateStatus == PAST_DUE_NO_ANSWER ) {
+                if ($dateStatus == PAST_DUE_ANSWER_LATER) {
+                    return PAST_DUE_ATMPT_ANS;
+                } else {
+                    return PAST_DUE_ATMPT_NOANS;
+                }
+            } else {
+                return ANSWER_SUBMITTED;
+            }
+        }
 	my $awarded=$self->awarded($part);
 	if ($awarded < 1 && $awarded > 0) {
             return PARTIALLY_CORRECT;
@@ -5398,7 +5733,23 @@ sub status {
 
     if ($dateStatus == PAST_DUE_ANSWER_LATER ||
         $dateStatus == PAST_DUE_NO_ANSWER ) {
-        return $suppressFeedback ? ANSWER_SUBMITTED : $dateStatus; 
+        if ($suppressFeedback) {
+            if ($completionStatus == NOT_ATTEMPTED) {
+                if ($dateStatus == PAST_DUE_ANSWER_LATER) {
+                    return PAST_DUE_NO_ATMT_ANS;
+                } else {
+                    return PAST_DUE_NO_ATMT_NOANS;
+                }
+            } else {
+                if ($dateStatus == PAST_DUE_ANSWER_LATER) {
+                    return PAST_DUE_ATMPT_ANS;
+                } else {
+                    return PAST_DUE_ATMPT_NOANS;
+                }
+            }
+        } else {
+            return $dateStatus;
+        }
     }
 
     if ($dateStatus == ANSWER_OPEN) {
@@ -5467,7 +5818,7 @@ sub check_for_slot {
                                 ($checkedin,$checkedinslot) = $self->checkedin();
                                 unless ((grep(/^\Q$checkedin\E/,@proctors)) &&
                                         ($checkedinslot eq $slot_name)) {
-                                    return (NEEDS_CHECKIN,undef,$slot_name); 
+                                    return (NEEDS_CHECKIN,$end,$slot_name); 
                                 }
                             }
                             return (RESERVED,$end,$slot_name);
@@ -5608,6 +5959,10 @@ my %compositeToSimple =
       EXCUSED()               => CORRECT,
       PAST_DUE_NO_ANSWER()    => INCORRECT,
       PAST_DUE_ANSWER_LATER() => INCORRECT,
+      PAST_DUE_ATMPT_ANS()    => ATTEMPTED,
+      PAST_DUE_ATMPT_NOANS()  => ATTEMPTED,
+      PAST_DUE_NO_ATMT_ANS()  => CLOSED,
+      PAST_DUE_NO_ATMT_NOANS() => CLOSED,
       ANSWER_OPEN()           => INCORRECT,
       OPEN_LATER()            => CLOSED,
       TRIES_LEFT()            => OPEN,