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Diff for /loncom/interface/lonnavmaps.pm between versions 1.427 and 1.530

version 1.427, 2009/02/24 22:05:26 version 1.530, 2017/04/08 18:50:35
Line 31 Line 31
   
 =head1 NAME  =head1 NAME
   
 Apache::lonnavmaps.pm  Apache::lonnavmaps - Subroutines to handle and render the navigation
   
 =head1 SYNOPSIS  =head1 SYNOPSIS
   
Line 163  If true, the resource's folder will not Line 163  If true, the resource's folder will not
 it. Default is false. True implies printCloseAll is false, since you  it. Default is false. True implies printCloseAll is false, since you
 can't close or open folders when this is on anyhow.  can't close or open folders when this is on anyhow.
   
   =item * B<map_no_edit_link>:
   
   If true, the title of the folder or page will not be followed by an
   icon/link to direct editing of a folder or composite page, originally
   added via the Course Editor.
   
 =back  =back
   
 =item * B<Apache::lonnavmaps::communication_status>:  =item * B<Apache::lonnavmaps::communication_status>:
Line 463  returns 4 Line 469  returns 4
   
 =item add_linkitem()  =item add_linkitem()
   
 =item show_linkitems()  =item show_linkitems_toolbar()
   
 =back  =back
   
Line 477  use Apache::loncommon(); Line 483  use Apache::loncommon();
 use Apache::lonenc();  use Apache::lonenc();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::lonnet;  use Apache::lonnet;
   use Apache::lonmap;
   
 use POSIX qw (floor strftime);  use POSIX qw (floor strftime);
 use Time::HiRes qw( gettimeofday tv_interval );  use Time::HiRes qw( gettimeofday tv_interval );
 use LONCAPA;  use LONCAPA;
 use DateTime();  use DateTime();
   use HTML::Entities;
   
   # For debugging
   
   #use Data::Dumper;
   
   
 # symbolic constants  # symbolic constants
 sub SYMB { return 1; }  sub SYMB { return 1; }
Line 491  sub NOTHING { return 3; } Line 505  sub NOTHING { return 3; }
   
 my $resObj = "Apache::lonnavmaps::resource";  my $resObj = "Apache::lonnavmaps::resource";
   
 # Keep these mappings in sync with lonquickgrades, which uses the colors  # Keep these mappings in sync with lonquickgrades, which usesthe colors
 # instead of the icons.  # instead of the icons.
 my %statusIconMap =   my %statusIconMap = 
     (      (
Line 504  my %statusIconMap = Line 518  my %statusIconMap =
      $resObj->ERROR        => ''       $resObj->ERROR        => ''
      );       );
   
 my %iconAltTags =   my %iconAltTags =   #texthash does not work here
     ( 'navmap.correct.gif' => 'Correct',      ( 'navmap.correct.gif'  => 'Correct',
       'navmap.wrong.gif'   => 'Incorrect',        'navmap.wrong.gif'    => 'Incorrect',
       'navmap.open.gif'    => 'Open' );        'navmap.open.gif'     => 'Is Open',
         'navmap.partial.gif'  => 'Partially Correct',
         'navmap.ellipsis.gif' => 'Attempted',
        );
   
 # Defines a status->color mapping, null string means don't color  # Defines a status->color mapping, null string means don't color
 my %colormap =   my %colormap = 
Line 523  my %colormap = Line 540  my %colormap =
       $resObj->OPEN                   => '',        $resObj->OPEN                   => '',
       $resObj->NOTHING_SET            => '',        $resObj->NOTHING_SET            => '',
       $resObj->ATTEMPTED              => '',        $resObj->ATTEMPTED              => '',
         $resObj->CREDIT_ATTEMPTED       => '',
       $resObj->ANSWER_SUBMITTED       => '',        $resObj->ANSWER_SUBMITTED       => '',
       $resObj->PARTIALLY_CORRECT      => '#006600'        $resObj->PARTIALLY_CORRECT      => '#006600'
       );        );
Line 530  my %colormap = Line 548  my %colormap =
 # is not yet done and due in less than 24 hours  # is not yet done and due in less than 24 hours
 my $hurryUpColor = "#FF0000";  my $hurryUpColor = "#FF0000";
   
 sub close {  
     if ($env{'environment.remotenavmap'} ne 'on') { return ''; }  
     return(<<ENDCLOSE);  
 <script type="text/javascript">  
 window.status='Accessing Nav Control';  
 menu=window.open("/adm/rat/empty.html","loncapanav",  
                  "height=600,width=400,scrollbars=1");  
 window.status='Closing Nav Control';  
 menu.close();  
 window.status='Done.';  
 </script>  
 ENDCLOSE  
 }  
   
 sub update {  
     if ($env{'environment.remotenavmap'} ne 'on') { return ''; }  
     if (!$env{'request.course.id'}) { return ''; }  
     if ($ENV{'REQUEST_URI'}=~m|^/adm/navmaps|) { return ''; }  
     return(<<ENDUPDATE);  
 <form name="navform"></form>  
 <script type="text/javascript">  
 this.document.navform.action='/adm/navmaps#curloc';  
 this.document.navform.target='loncapanav';  
 this.document.navform.submit();  
 </script>  
 ENDUPDATE  
 }  
   
   
 sub addToFilter {  sub addToFilter {
     my $hashIn = shift;      my $hashIn = shift;
     my $addition = shift;      my $addition = shift;
Line 594  sub getLinkForResource { Line 583  sub getLinkForResource {
     my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb());      my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb());
     if ($map=~/\.page$/) {      if ($map=~/\.page$/) {
  my $url=&Apache::lonnet::clutter($map);   my $url=&Apache::lonnet::clutter($map);
  $anchor=&escape($src->shown_symb());   $anchor=&escape($res->shown_symb());
  return ($url,$res->shown_symb(),$anchor);   return ($url,$res->shown_symb(),$anchor);
     }      }
         }          }
Line 629  sub getDescription { Line 618  sub getDescription {
         return &mt("Having technical difficulties; please check status later");           return &mt("Having technical difficulties; please check status later"); 
     }      }
     if ($status == $res->NOTHING_SET) {      if ($status == $res->NOTHING_SET) {
         return &mt("Not currently assigned.");          return &Apache::lonhtmlcommon::direct_parm_link(&mt('Not currently assigned'),$res->symb(),'opendate',$part);
     }      }
     if ($status == $res->OPEN_LATER) {      if ($status == $res->OPEN_LATER) {
         return &mt("Open ") .timeToHumanString($open,'start');          return &mt("Open [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($open,'start'),$res->symb(),'opendate',$part));
       }
       my $slotinfo;
       if ($res->simpleStatus($part) == $res->OPEN) {
           unless (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {
               my ($slot_status,$slot_time,$slot_name)=$res->check_for_slot($part);
               my $slotmsg;
               if ($slot_status == $res->UNKNOWN) {
                   $slotmsg = &mt('Reservation status unknown');
               } elsif ($slot_status == $res->RESERVED) {
                   $slotmsg = &mt('Reserved - ends [_1]',
                              timeToHumanString($slot_time,'end'));
               } elsif ($slot_status == $res->RESERVED_LOCATION) {
                   $slotmsg = &mt('Reserved - specific location(s) - ends [_1]',
                              timeToHumanString($slot_time,'end'));
               } elsif ($slot_status == $res->RESERVED_LATER) {
                   $slotmsg = &mt('Reserved - next open [_1]',
                              timeToHumanString($slot_time,'start'));
               } elsif ($slot_status == $res->RESERVABLE) {
                   $slotmsg = &mt('Reservable, reservations close [_1]',
                              timeToHumanString($slot_time,'end'));
               } elsif ($slot_status == $res->RESERVABLE_LATER) {
                   $slotmsg = &mt('Reservable, reservations open [_1]',
                              timeToHumanString($slot_time,'start'));
               } elsif ($slot_status == $res->NOT_IN_A_SLOT) {
                   $slotmsg = &mt('Reserve a time/place to work');
               } elsif ($slot_status == $res->NOTRESERVABLE) {
                   $slotmsg = &mt('Reservation not available');
               } elsif ($slot_status == $res->WAITING_FOR_GRADE) {
                   $slotmsg = &mt('Submission in grading queue');
               }
               if ($slotmsg) {
                   if ($res->is_task() || !$due) {
                        return $slotmsg;
                   }
                   $slotinfo = ('&nbsp;' x 2).'('.$slotmsg.')';
               }
           }
     }      }
     if ($status == $res->OPEN) {      if ($status == $res->OPEN) {
         if ($due) {          if ($due) {
     if ($res->is_practice()) {      if ($res->is_practice()) {
  return &mt("Closes ")."  " .timeToHumanString($due,'start');   return &mt("Closes [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'start'),$res->symb(),'duedate',$part)).$slotinfo;
     } else {      } else {
  return &mt("Due")."  " .timeToHumanString($due,'end');   return &mt("Due [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'end'),$res->symb(),'duedate',$part)).$slotinfo;
     }      }
         } else {          } else {
             return &mt("Open, no due date");              return &Apache::lonhtmlcommon::direct_parm_link(&mt("Open, no due date"),$res->symb(),'duedate',$part).$slotinfo;
         }          }
     }      }
     if ($status == $res->PAST_DUE_ANSWER_LATER) {      if ($status == $res->PAST_DUE_ANSWER_LATER) {
         return &mt("Answer open")." " .timeToHumanString($answer,'start');          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 == $res->PAST_DUE_NO_ANSWER) {
  if ($res->is_practice()) {   if ($res->is_practice()) {
     return &mt("Closed")." " . timeToHumanString($due,'start');      return &mt("Closed [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'start'),$res->symb(),'answerdate,duedate',$part));
  } else {   } else {
     return &mt("Was due")." " . timeToHumanString($due,'end');      return &mt("Was due [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'end'),$res->symb(),'answerdate,duedate',$part));
  }   }
     }      }
     if (($status == $res->ANSWER_OPEN || $status == $res->PARTIALLY_CORRECT)      if (($status == $res->ANSWER_OPEN || $status == $res->PARTIALLY_CORRECT)
  && $res->handgrade($part) ne 'yes') {   && $res->handgrade($part) ne 'yes') {
         return &mt("Answer available");          return &Apache::lonhtmlcommon::direct_parm_link(&mt("Answer available"),$res->symb(),'answerdate,duedate',$part);
     }      }
     if ($status == $res->EXCUSED) {      if ($status == $res->EXCUSED) {
         return &mt("Excused by instructor");          return &mt("Excused by instructor");
     }      }
     if ($status == $res->ATTEMPTED) {      if ($status == $res->ATTEMPTED) {
         return &mt("Answer submitted, not yet graded");          if ($res->is_anonsurvey($part) || $res->is_survey($part)) {
               return &mt("Survey submission recorded");
           } else {
               return &mt("Answer submitted, not yet graded");
           }
       }
       if ($status == $res->CREDIT_ATTEMPTED) {
           if ($res->is_anonsurvey($part) || $res->is_survey($part)) {
               return &mt("Credit for survey submission");
           }
     }      }
     if ($status == $res->TRIES_LEFT) {      if ($status == $res->TRIES_LEFT) {
         my $tries = $res->tries($part);          my $tries = $res->tries($part);
         my $maxtries = $res->maxtries($part);          my $maxtries = $res->maxtries($part);
         my $triesString = "";          my $triesString = "";
         if ($tries && $maxtries) {          if ($tries && $maxtries) {
             $triesString = '<font size="-1"><i>('.&mt('[_1] of [quant,_2,try,tries] used',$tries,$maxtries).')</i></font>';              $triesString = '<span class="LC_fontsize_medium"><i>('.&mt('[_1] of [quant,_2,try,tries] used',$tries,$maxtries).')</i></span>';
             if ($maxtries > 1 && $maxtries - $tries == 1) {              if ($maxtries > 1 && $maxtries - $tries == 1) {
                 $triesString = "<b>$triesString</b>";                  $triesString = "<b>$triesString</b>";
             }              }
         }          }
         if ($due) {          if ($due) {
             return &mt("Due")." " . timeToHumanString($due,'end') .              return &mt("Due [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'end'),$res->symb(),'duedate',$part)) .
                 " $triesString";                  " $triesString";
         } else {          } else {
             return &mt("No due date")." $triesString";              return &Apache::lonhtmlcommon::direct_parm_link(&mt("No due date"),$res->symb(),'duedate',$part)." $triesString";
         }          }
     }      }
     if ($status == $res->ANSWER_SUBMITTED) {      if ($status == $res->ANSWER_SUBMITTED) {
Line 761  sub timeToHumanString { Line 796  sub timeToHumanString {
   
         # Less than an hour          # Less than an hour
         if ( $delta < $hour ) {          if ( $delta < $hour ) {
             # If so, use minutes              # If so, use minutes; or minutes, seconds (if format requires)
             my $minutes = floor($delta / 60);              my $minutes = floor($delta / 60);
               if (($format ne '') && ($format =~ /\%(T|S)/)) {
                   my $display;
                   if ($minutes == 1) {
                       $display = "${prefix}1 minute";
                   } else {
                       $display = "$prefix$minutes minutes";
                   }
                   my $seconds = $delta % $minute;
                   if ($seconds == 0) {
                       $display .= $tense;
                   } elsif ($seconds == 1) {
                       $display .= ", 1 second$tense";
                   } else {
                       $display .= ", $seconds seconds$tense";
                   }
                   return $display;
               }
             if ($minutes == 1) { return "${prefix}1 minute$tense"; }              if ($minutes == 1) { return "${prefix}1 minute$tense"; }
             return "$prefix$minutes minutes$tense";              return "$prefix$minutes minutes$tense";
         }          }
                   
         # Is it less than 24 hours away? If so,          # Is it less than 24 hours away? If so,
         # display hours + minutes          # display hours + minutes, (and + seconds, if format specified it)  
         if ( $delta < $hour * 24) {          if ( $delta < $hour * 24) {
             my $hours = floor($delta / $hour);              my $hours = floor($delta / $hour);
             my $minutes = floor(($delta % $hour) / $minute);              my $minutes = floor(($delta % $hour) / $minute);
Line 783  sub timeToHumanString { Line 835  sub timeToHumanString {
             if ($minutes == 0) {              if ($minutes == 0) {
                 $minuteString = "";                  $minuteString = "";
             }              }
               if (($format ne '') && ($format =~ /\%(T|S)/)) {
                   my $display = "$prefix$hourString$minuteString";
                   my $seconds = $delta-(($hours * $hour)+($minutes * $minute));
                   if ($seconds == 0) {
                       $display .= $tense;
                   } elsif ($seconds == 1) {
                       $display .= ", 1 second$tense";
                   } else {
                       $display .= ", $seconds seconds$tense";
                   }
                   return $display;
               }
             return "$prefix$hourString$minuteString$tense";              return "$prefix$hourString$minuteString$tense";
         }          }
   
           # Date/time is more than 24 hours away
   
  my $dt = DateTime->from_epoch(epoch => $time)   my $dt = DateTime->from_epoch(epoch => $time)
                  ->set_time_zone(&Apache::lonlocal::gettimezone());                   ->set_time_zone(&Apache::lonlocal::gettimezone());
   
  # If there's a caller supplied format, use it.   # If there's a caller supplied format, use it, unless it only displays
           # H:M:S or H:M.
   
  if ($format ne '') {   if (($format ne '') && ($format ne '%T') && ($format ne '%R')) {
     my $timeStr = $dt->strftime($format);      my $timeStr = $dt->strftime($format);
     return $timeStr.' ('.$dt->time_zone_short_name().')';      return $timeStr.' ('.$dt->time_zone_short_name().')';
  }   }
Line 843  sub part_status_summary { return 4; } Line 910  sub part_status_summary { return 4; }
 sub render_resource {  sub render_resource {
     my ($resource, $part, $params) = @_;      my ($resource, $part, $params) = @_;
   
       my $editmapLink;
     my $nonLinkedText = ''; # stuff after resource title not in link      my $nonLinkedText = ''; # stuff after resource title not in link
   
     my $link = $params->{"resourceLink"};      my $link = $params->{"resourceLink"};
       if ($resource->ext()) {
           $link =~ s/\#.+(\?)/$1/g;
       }
   
     #  The URL part is not escaped at this point, but the symb is...       #  The URL part is not escaped at this point, but the symb is... 
     #  The stuff to the left of the ? must have ' replaced by \' since  
     #  it will be quoted with ' in the href.  
   
     my ($left,$right) = split(/\?/, $link);  
     $link = $left.'?'.$right;  
   
     my $src = $resource->src();      my $src = $resource->src();
     my $it = $params->{"iterator"};      my $it = $params->{"iterator"};
Line 865  sub render_resource { Line 931  sub render_resource {
     my $location=&Apache::loncommon::lonhttpdurl("/adm/lonIcons");      my $location=&Apache::loncommon::lonhttpdurl("/adm/lonIcons");
     # If this is a new branch, label it so      # If this is a new branch, label it so
     if ($params->{'isNewBranch'}) {      if ($params->{'isNewBranch'}) {
         $newBranchText = "<img src='$location/branch.gif' alt='Branch' />";          $newBranchText = "<img src='$location/branch.gif' alt=".mt('Branch')." />";
     }      }
   
     # links to open and close the folder      # links to open and close the folder
Line 929  sub render_resource { Line 995  sub render_resource {
             $linkopen = "";              $linkopen = "";
             $linkclose = "";              $linkclose = "";
         }          }
     }          if (((&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) ||
                 (&Apache::lonnet::allowed('cev',$env{'request.course.id'}))) &&
     if ($resource->randomout()) {              ($resource->symb=~/\_\_\_[^\_]+\_\_\_uploaded/)) {
         $nonLinkedText .= ' <i>('.&mt('hidden').')</i> ';              if (!$params->{'map_no_edit_link'}) {
                   my $icon = &Apache::loncommon::lonhttpdurl('/res/adm/pages').'/editmap.png';
                   $editmapLink='&nbsp;'.
                            '<a href="/adm/coursedocs?command=directnav&amp;symb='.&escape($resource->symb()).'">'.
                            '<img src="'.$icon.'" alt="'.&mt('Edit Content').'" title="'.&mt('Edit Content').'" />'.
                            '</a>';
               }
           }
           if ($params->{'mapHidden'} || $resource->randomout()) {
               $nonLinkedText .= ' <span class="LC_warning">('.&mt('hidden').')</span> ';
           }
       } else {
           if ($resource->randomout()) {
               $nonLinkedText .= ' <span class="LC_warning">('.&mt('hidden').')</span> ';
           }
     }      }
     if (!$resource->condval()) {      if (!$resource->condval()) {
         $nonLinkedText .= ' <i>('.&mt('conditionally hidden').')</i> ';          $nonLinkedText .= ' <span class="LC_info">('.&mt('conditionally hidden').')</span> ';
     }      }
     if (($resource->is_practice()) && ($resource->is_raw_problem())) {      if (($resource->is_practice()) && ($resource->is_raw_problem())) {
         $nonLinkedText .=' <font color="green"><b>'.&mt('not graded').'</b></font>';          $nonLinkedText .=' <span class="LC_info"><b>'.&mt('not graded').'</b></span>';
     }      }
   
     # We're done preparing and finally ready to start the rendering      # We're done preparing and finally ready to start the rendering
Line 962  sub render_resource { Line 1042  sub render_resource {
     # Is this the current resource?      # Is this the current resource?
     if (!$params->{'displayedHereMarker'} &&       if (!$params->{'displayedHereMarker'} && 
         $resource->symb() eq $params->{'here'} ) {          $resource->symb() eq $params->{'here'} ) {
         $curMarkerBegin = '<em style="font-weight:bold;">';          unless ($resource->is_map()) {
         $curMarkerEnd = '</em>';              $curMarkerBegin = '<span class="LC_current_nav_location">';
               $curMarkerEnd = '</span>';
           }
  $params->{'displayedHereMarker'} = 1;   $params->{'displayedHereMarker'} = 1;
     }      }
   
Line 979  sub render_resource { Line 1061  sub render_resource {
         $nonLinkedText .= ' ('.&mt('[_1] parts', $resource->countParts()).')';          $nonLinkedText .= ' ('.&mt('[_1] parts', $resource->countParts()).')';
     }      }
   
     my $target;  
     if ($env{'environment.remotenavmap'} eq 'on') {  
  $target=' target="loncapaclient" ';  
     }  
     if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {      if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {
         $result .= "$curMarkerBegin<a $target href=\"$link\">$title$partLabel</a>$curMarkerEnd$nonLinkedText</td>";          $result .= "$curMarkerBegin<a href=\"$link\">$title$partLabel</a>$curMarkerEnd$editmapLink$nonLinkedText</td>";
     } else {      } else {
         $result .= "$curMarkerBegin$linkopen$title$partLabel</a>$curMarkerEnd$nonLinkedText</td>";          $result .= "$curMarkerBegin$linkopen$title$partLabel</a>$curMarkerEnd$editmapLink$nonLinkedText</td>";
     }      }
   
     return $result;      return $result;
Line 997  sub render_communication_status { Line 1075  sub render_communication_status {
     my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = "";      my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = "";
   
     my $link = $params->{"resourceLink"};      my $link = $params->{"resourceLink"};
     my $target;      my $linkopen = "<a href=\"$link\">";
     if ($env{'environment.remotenavmap'} eq 'on') {  
  $target=' target="loncapaclient" ';  
     }  
     my $linkopen = "<a $target href=\"$link\">";  
     my $linkclose = "</a>";      my $linkclose = "</a>";
     my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");      my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");
   
     if ($resource->hasDiscussion()) {      if ($resource->hasDiscussion()) {
         $discussionHTML = $linkopen .          $discussionHTML = $linkopen .
             '<img alt="'.&mt('New Discussion').'" src="'.$location.'/chat.gif" />' .              '<img alt="'.&mt('New Discussion').'" src="'.$location.'/chat.gif" title="'.&mt('New Discussion').'"/>' .
             $linkclose;              $linkclose;
     }      }
           
Line 1014  sub render_communication_status { Line 1089  sub render_communication_status {
         my $feedback = $resource->getFeedback();          my $feedback = $resource->getFeedback();
         foreach my $msgid (split(/\,/, $feedback)) {          foreach my $msgid (split(/\,/, $feedback)) {
             if ($msgid) {              if ($msgid) {
                 $feedbackHTML .= '&nbsp;<a '.$target.' href="/adm/email?display='                  $feedbackHTML .= '&nbsp;<a href="/adm/email?display='
                     . &escape($msgid) . '">'                      . &escape($msgid) . '">'
                     . '<img alt="'.&mt('New E-mail').'" src="'.$location.'/feedback.gif" /></a>';                      . '<img alt="'.&mt('New E-mail').'" src="'.$location.'/feedback.gif" title="'.&mt('New E-mail').'"/></a>';
             }              }
         }          }
     }      }
Line 1028  sub render_communication_status { Line 1103  sub render_communication_status {
             last if ($errorcount>=10); # Only output 10 bombs maximum              last if ($errorcount>=10); # Only output 10 bombs maximum
             if ($msgid) {              if ($msgid) {
                 $errorcount++;                  $errorcount++;
                 $errorHTML .= '&nbsp;<a '.$target.' href="/adm/email?display='                  $errorHTML .= '&nbsp;<a href="/adm/email?display='
                     . &escape($msgid) . '">'                      . &escape($msgid) . '">'
                     . '<img alt="'.&mt('New Error').'" src="'.$location.'/bomb.gif" /></a>';                      . '<img alt="'.&mt('New Error').'" src="'.$location.'/bomb.gif" title="'.&mt('New Error').'"/></a>';
             }              }
         }          }
     }      }
Line 1048  sub render_quick_status { Line 1123  sub render_quick_status {
         $params->{'multipart'} && $part eq "0";          $params->{'multipart'} && $part eq "0";
   
     my $link = $params->{"resourceLink"};      my $link = $params->{"resourceLink"};
     my $target;      my $linkopen = "<a href=\"$link\">";
     if ($env{'environment.remotenavmap'} eq 'on') {  
  $target=' target="loncapaclient" ';  
     }  
     my $linkopen = "<a $target href=\"$link\">";  
     my $linkclose = "</a>";      my $linkclose = "</a>";
   
  $result .= '<td class="LC_middle">';   $result .= '<td class="LC_middle">';
Line 1063  sub render_quick_status { Line 1134  sub render_quick_status {
         if ($icon) {          if ($icon) {
     my $location=      my $location=
  &Apache::loncommon::lonhttpdurl("/adm/lonIcons/$icon");   &Apache::loncommon::lonhttpdurl("/adm/lonIcons/$icon");
             $result .= "$linkopen<img src='$location' alt='$alt' />$linkclose";   $result .= $linkopen.'<img src="'.$location.'" alt="'.&mt($alt).'" title="'.&mt($alt).'" />'.$linkclose;            
         } else {          } else {
             $result .= "&nbsp;";              $result .= "&nbsp;";
         }          }
Line 1080  sub render_long_status { Line 1151  sub render_long_status {
         $params->{'multipart'} && $part eq "0";          $params->{'multipart'} && $part eq "0";
                                   
     my $color;      my $color;
       my $info = '';
     if ($resource->is_problem() || $resource->is_practice()) {      if ($resource->is_problem() || $resource->is_practice()) {
         $color = $colormap{$resource->status};          $color = $colormap{$resource->status};
           
         if (dueInLessThan24Hours($resource, $part) ||          if (dueInLessThan24Hours($resource, $part)) {
             lastTry($resource, $part)) {  
             $color = $hurryUpColor;              $color = $hurryUpColor;
         }              $info = ' title="'.&mt('Due in less than 24 hours!').'"';
           } elsif (lastTry($resource, $part)) {
               unless (($resource->problemstatus($part) eq 'no') ||
                       ($resource->problemstatus($part) eq 'no_feedback_ever')) {
                   $color = $hurryUpColor;
                   $info = ' title="'.&mt('One try remaining!').'"';
               }
            }
     }      }
           
     if ($resource->kind() eq "res" &&      if ($resource->kind() eq "res" &&
         ($resource->is_problem() || $resource->is_practice()) &&          $resource->is_raw_problem() &&
         !$firstDisplayed) {          !$firstDisplayed) {
         if ($color) {$result .= "<font color=\"$color\"><b>"; }          if ($color) {$result .= '<span style="color:'.$color.'"'.$info.'><b>'; }
         $result .= getDescription($resource, $part);          $result .= getDescription($resource, $part);
         if ($color) {$result .= "</b></font>"; }          if ($color) {$result .= "</b></span>"; }
     }      }
     if ($resource->is_map() && &advancedUser() && $resource->randompick()) {      if ($resource->is_map() && &advancedUser() && $resource->randompick()) {
         $result .= &mt('(randomly select [_1])', $resource->randompick());          $result .= &mt('(randomly select [_1])', $resource->randompick());
Line 1176  sub render_parts_summary_status { Line 1254  sub render_parts_summary_status {
     }      }
     $return.= $td . $totalParts . ' parts: ';      $return.= $td . $totalParts . ' parts: ';
     foreach my $status (@statuses) {      foreach my $status (@statuses) {
  if ($overallstatus{$status}) {          if ($overallstatus{$status}) {
     $return.="<font color='" . $statusColors{$status} .              $return.='<span style="color:' . $statusColors{$status}
  "'>" . $overallstatus{$status} . ' '                     . '">' . $overallstatus{$status} . ' '
  . $statusStrings{$status} . "</font>";                     . $statusStrings{$status} . '</span>';
  }          }
     }      }
     $return.= $endtd;      $return.= $endtd;
     return $return;      return $return;
Line 1387  sub render { Line 1465  sub render {
  my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");   my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");
         if ($navmap->{LAST_CHECK}) {          if ($navmap->{LAST_CHECK}) {
             $result .=               $result .= 
                 '<img src="'.$location.'/chat.gif"> '.&mt('New discussion since').' '.                  '<img src="'.$location.'/chat.gif" alt="" /> '.&mt('New discussion since').' '.
                 strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})).                  strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})).
                 '</td><td align="center" valign="bottom">&nbsp;&nbsp;'.                  '</td><td align="center" valign="bottom">&nbsp;&nbsp;'.
                 '<img src="'.$location.'/feedback.gif"> '.&mt('New message (click to open)').'<p>'.                  '<img src="'.$location.'/feedback.gif" alt="" /> '.&mt('New message (click to open)').'<p>'.
                 '</td>';                   '</td>'; 
         } else {          } else {
             $result .= '<td align="center" valign="bottom">&nbsp;&nbsp;'.              $result .= '<td align="center" valign="bottom">&nbsp;&nbsp;'.
                 '<img src="'.$location.'/chat.gif"> '.&mt('Discussions').'</td><td align="center" valign="bottom">'.                  '<img src="'.$location.'/chat.gif" alt="" /> '.&mt('Discussions').'</td><td align="center" valign="bottom">'.
                 '&nbsp;&nbsp;<img src="'.$location.'/feedback.gif"> '.&mt('New message (click to open)').                  '&nbsp;&nbsp;<img src="'.$location.'/feedback.gif" alt="" /> '.&mt('New message (click to open)').
                 '</td>';                   '</td>'; 
         }          }
   
Line 1405  sub render { Line 1483  sub render {
     if ($printCloseAll && !$args->{'resource_no_folder_link'}) {      if ($printCloseAll && !$args->{'resource_no_folder_link'}) {
  my ($link,$text);   my ($link,$text);
         if ($condition) {          if ($condition) {
     $link='"navmaps?condition=0&amp;filter=&amp;'.$queryString.      $link='navmaps?condition=0&amp;filter=&amp;'.$queryString.
  '&here='.&escape($here).'"';   '&amp;here='.&escape($here);
     $text='Close all folders';      $text='Close all folders';
         } else {          } else {
     $link='"navmaps?condition=1&amp;filter=&amp;'.$queryString.      $link='navmaps?condition=1&amp;filter=&amp;'.$queryString.
  '&here='.&escape($here).'"';   '&amp;here='.&escape($here);
     $text='Open all folders';      $text='Open all folders';
         }          }
           if ($env{'form.register'}) {
               $link .= '&amp;register='.$env{'form.register'};
           }
  if ($args->{'caller'} eq 'navmapsdisplay') {   if ($args->{'caller'} eq 'navmapsdisplay') {
     &add_linkitem($args->{'linkitems'},'changefolder',              unless ($args->{'notools'}) {
   'location.href='.$link,$text);                  &add_linkitem($args->{'linkitems'},'changefolder',
                                 "location.href='$link'",$text);
               }
  } else {   } else {
     $result.='<a href='.$link.'>'.&mt($text).'</a>';      $result.= '<a href="'.$link.'">'.&mt($text).'</a>';
  }   }
         $result .= "\n";          $result .= "\n";
     }      }
   
     # Check for any unread discussions in all resources.      # Check for any unread discussions in all resources.
     if ($args->{'caller'} eq 'navmapsdisplay') {      if (($args->{'caller'} eq 'navmapsdisplay') && (!$args->{'notools'})) {
  &add_linkitem($args->{'linkitems'},'clearbubbles',   &add_linkitem($args->{'linkitems'},'clearbubbles',
       'document.clearbubbles.submit()',        'document.clearbubbles.submit()',
       'Mark all posts read');        'Mark all posts read');
  my $time=time;   my $time=time;
           my $querystr = &HTML::Entities::encode($ENV{'QUERY_STRING'},'<>&"');
  $result .= (<<END);   $result .= (<<END);
     <form name="clearbubbles" method="post" action="/adm/feedback">      <form name="clearbubbles" method="post" action="/adm/feedback">
  <input type="hidden" name="navurl" value="$ENV{'QUERY_STRING'}" />   <input type="hidden" name="navurl" value="$querystr" />
  <input type="hidden" name="navtime" value="$time" />   <input type="hidden" name="navtime" value="$time" />
 END  END
           if ($env{'form.register'}) {
               $result .= '<input type="hidden" name="register" value="'.$env{'form.register'}.'" />';
           }
         if ($args->{'sort'} eq 'discussion') {           if ($args->{'sort'} eq 'discussion') { 
     my $totdisc = 0;      my $totdisc = 0;
     my $haveDisc = '';      my $haveDisc = '';
Line 1453  END Line 1540  END
  }   }
  $result.='</form>';   $result.='</form>';
     }      }
       if (($args->{'caller'} eq 'navmapsdisplay') &&
           ((&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 
               "uploaded/$cdom/$cnum/default.sequence") {
               &add_linkitem($args->{'linkitems'},'edittoplevel',
                             "javascript:gocmd('/adm/coursedocs','editdocs');",
                             'Content Editor');
           }
       }
   
      
     if ($args->{'caller'} eq 'navmapsdisplay') {      if ($args->{'caller'} eq 'navmapsdisplay') {
         $result .= '<table><tr><td>'.          $result .= &show_linkitems_toolbar($args,$condition);
                    &Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT').'</td>';  
  if ($env{'environment.remotenavmap'} ne 'on') {  
     $result .= '<td>&nbsp;</td>';   
         } else {  
     $result .= '</tr><tr>';   
         }  
  $result.=&show_linkitems($args->{'linkitems'});  
         if ($args->{'sort_html'}) {  
     if ($env{'environment.remotenavmap'} ne 'on') {  
  $result.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>'.  
     '<td align="right">'.$args->{'sort_html'}.'</td></tr>';  
     } else {  
  $result.='</tr><tr><td align="left"><br />'.  
     $args->{'sort_html'}.'</td></tr>';  
     }  
  }  
         $result .= '</table>';  
     } elsif ($args->{'sort_html'}) {       } elsif ($args->{'sort_html'}) { 
         $result.=$args->{'sort_html'};           $result.=$args->{'sort_html'}; 
     }      }
Line 1486  END Line 1567  END
     }      }
     # End parameter setting      # End parameter setting
           
     $result .= "\n<table id=\"LC_nav_location\">\n<tbody>\n<tr>\n<td class=\"LC_current_location\"> &nbsp; </td>\n</tr>\n</tbody>\n</table>\n";  
     $result .= "<br />\n";      $result .= "<br />\n";
   
     # Data      # Data
     $result .= '<table id="LC_tableOfContent">' ."\n";      $result.=&Apache::loncommon::start_data_table("LC_tableOfContent");    
   
     my $res = "Apache::lonnavmaps::resource";      my $res = "Apache::lonnavmaps::resource";
     my %condenseStatuses =      my %condenseStatuses =
         ( $res->NETWORK_FAILURE    => 1,          ( $res->NETWORK_FAILURE    => 1,
           $res->NOTHING_SET        => 1,            $res->NOTHING_SET        => 1,
           $res->CORRECT            => 1 );            $res->CORRECT            => 1 );
     my @backgroundColors = ("LC_trEven", "LC_trOdd");  
   
     # Shared variables      # Shared variables
     $args->{'counter'} = 0; # counts the rows      $args->{'counter'} = 0; # counts the rows
Line 1505  END Line 1584  END
     $args->{'isNewBranch'} = 0;      $args->{'isNewBranch'} = 0;
     $args->{'condensed'} = 0;         $args->{'condensed'} = 0;   
   
     my $location = &Apache::loncommon::lonhttpdurl("/adm/lonIcons/whitespace_21_21.gif");      my $location = &Apache::loncommon::lonhttpdurl("/adm/lonIcons/whitespace_21.gif");
     $args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='$location' alt='' />");      $args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='$location' alt='' />");
     $args->{'displayedHereMarker'} = 0;      $args->{'displayedHereMarker'} = 0;
   
     # If we're suppressing empty sequences, look for them here. Use DFS for speed,      # If we're suppressing empty sequences, look for them here.
     # since structure actually doesn't matter, except what map has what resources.      # We also do this even if $args->{'suppressEmptySequences'}
     if ($args->{'suppressEmptySequences'}) {      # is not true, so we can hide empty sequences for which the
         my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap,      # hiddenresource parameter is set to yes (at map level), or
                                                          $it->{FIRST_RESOURCE},      # mark as hidden for users who have $userCanSeeHidden.  
                                                          $it->{FINISH_RESOURCE},      # Use DFS for speed, since structure actually doesn't matter,
                                                          {}, undef, 1);      # except what map has what resources.
         my $depth = 0;  
         $dfsit->next();      my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap,
         my $curRes = $dfsit->next();                                                       $it->{FIRST_RESOURCE},
         while ($depth > -1) {                                                       $it->{FINISH_RESOURCE},
             if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; }                                                       {}, undef, 1);
             if ($curRes == $dfsit->END_MAP()) { $depth--; }      my $depth = 0;
       $dfsit->next();
             if (ref($curRes)) {       my $curRes = $dfsit->next();
                 # Parallel pre-processing: Do sequences have non-filtered-out children?      while ($depth > -1) {
                 if ($curRes->is_map()) {          if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; }
                     $curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0;          if ($curRes == $dfsit->END_MAP()) { $depth--; }
                     # Sequences themselves do not count as visible children,  
                     # unless those sequences also have visible children.          if (ref($curRes)) { 
                     # This means if a sequence appears, there's a "promise"              # Parallel pre-processing: Do sequences have non-filtered-out children?
                     # that there's something under it if you open it, somewhere.              if ($curRes->is_map()) {
                 } else {                  $curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0;
                     # Not a sequence: if it's filtered, ignore it, otherwise                  # Sequences themselves do not count as visible children,
                     # rise up the stack and mark the sequences as having children                  # unless those sequences also have visible children.
                     if (&$filterFunc($curRes)) {                  # This means if a sequence appears, there's a "promise"
                         for my $sequence (@{$dfsit->getStack()}) {                  # that there's something under it if you open it, somewhere.
                             $sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1;              } elsif ($curRes->src()) {
                         }                  # Not a sequence: if it's filtered, ignore it, otherwise
                   # rise up the stack and mark the sequences as having children
                   if (&$filterFunc($curRes)) {
                       for my $sequence (@{$dfsit->getStack()}) {
                           $sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1;
                     }                      }
                 }                  }
             }              }
         } continue {  
             $curRes = $dfsit->next();  
         }          }
       } continue {
           $curRes = $dfsit->next();
     }      }
   
     my $displayedJumpMarker = 0;      my $displayedJumpMarker = 0;
Line 1601  END Line 1684  END
  undef($args->{'sort'});   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'};
       }
   
     while (1) {      while (1) {
  if ($args->{'sort'}) {   if ($args->{'sort'}) {
Line 1636  END Line 1736  END
         }           } 
   
         # If this is an empty sequence and we're filtering them, continue on          # If this is an empty sequence and we're filtering them, continue on
         if ($curRes->is_map() && $args->{'suppressEmptySequences'} &&          $args->{'mapHidden'} = 0;
             !$curRes->{DATA}->{HAS_VISIBLE_CHILDREN}) {          if (($curRes->is_map()) && (!$curRes->{DATA}->{HAS_VISIBLE_CHILDREN})) {
             next;              if ($args->{'suppressEmptySequences'}) {
                   next;
               } else {
                   my $mapname = &Apache::lonnet::declutter($curRes->src());
                   $mapname = &Apache::lonnet::deversion($mapname); 
                   if (lc($navmap->get_mapparam(undef,$mapname,"0.hiddenresource")) eq 'yes') {
                       if ($userCanSeeHidden) {
                           $args->{'mapHidden'} = 1;
                       } else {
                           next;
                       }
                   }
               }
         }          }
   
         # If we're suppressing navmaps and this is a navmap, continue on          # If we're suppressing navmaps and this is a navmap, continue on
Line 1722  END Line 1834  END
  $stack=$it->getStack();   $stack=$it->getStack();
     }      }
     ($src,$symb,$anchor)=getLinkForResource($stack);      ($src,$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.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) {
                       if ($hostname ne '') {
                           $src = 'http://'.$hostname.$src;
                       }
                       $src .= ($srcHasQuestion? '&amp;' : '?') . 'usehttp=1';
                       $srcHasQuestion = 1;
                   } elsif (($is_ssl) && ($src =~ m{^\Q/adm/wrapper/ext/\E(?!https:)})) {
                       if ($hostname ne '') {
                           $src = 'http://'.$hostname.$src;
                       }
                   }
               }
     if (defined($anchor)) { $anchor='#'.$anchor; }      if (defined($anchor)) { $anchor='#'.$anchor; }
     my $srcHasQuestion = $src =~ /\?/;  
     $args->{"resourceLink"} = $src.      $args->{"resourceLink"} = $src.
  ($srcHasQuestion?'&':'?') .   ($srcHasQuestion?'&amp;':'?') .
  'symb=' . &escape($symb).$anchor;   'symb=' . &escape($symb).$anchor;
  }   }
         # Now, we've decided what parts to show. Loop through them and          # Now, we've decided what parts to show. Loop through them and
         # show them.          # show them.
         foreach my $part (@parts) {          foreach my $part (@parts) {
             $rownum ++;              $rownum ++;
             my $backgroundColor = $backgroundColors[$rownum % scalar(@backgroundColors)];  
                           
             $result .= "  <tr class='$backgroundColor'>\n";              $result .= &Apache::loncommon::start_data_table_row();
   
             # Set up some data about the parts that the cols might want              # Set up some data about the parts that the cols might want
             my $filter = $it->{FILTER};              my $filter = $it->{FILTER};
Line 1760  END Line 1885  END
                 }                  }
                 $result .= $colHTML . "\n";                  $result .= $colHTML . "\n";
             }              }
             $result .= "    </tr>\n";              $result .= &Apache::loncommon::end_data_table_row();
             $args->{'isNewBranch'} = 0;              $args->{'isNewBranch'} = 0;
         }          }
   
Line 1779  END Line 1904  END
     }      }
  }   }
     }      }
   
       $result.=&Apache::loncommon::end_data_table();
           
     # Print out the part that jumps to #curloc if it exists      # Print out the part that jumps to #curloc if it exists
     # delay needed because the browser is processing the jump before      # delay needed because the browser is processing the jump before
Line 1788  END Line 1915  END
     # it's quite likely this might fix other browsers, too, and       # it's quite likely this might fix other browsers, too, and 
     # certainly won't hurt anything.      # certainly won't hurt anything.
     if ($displayedJumpMarker) {      if ($displayedJumpMarker) {
         $result .= "          $result .= &Apache::lonhtmlcommon::scripttag("
 <script>  
 if (location.href.indexOf('#curloc')==-1) {  if (location.href.indexOf('#curloc')==-1) {
     setTimeout(\"location += '#curloc';\", 0)      setTimeout(\"location += '#curloc';\", 0)
 }  }
 </script>";  ");
     }      }
   
     $result .= "</table>";  
       
     if ($r) {      if ($r) {
         $r->print($result);          $r->print($result);
         $result = "";          $result = "";
Line 1813  sub add_linkitem { Line 1937  sub add_linkitem {
     $$linkitems{$name}{'text'}=&mt($text);      $$linkitems{$name}{'text'}=&mt($text);
 }  }
   
 sub show_linkitems {  sub show_linkitems_toolbar {
     my ($linkitems)=@_;      my ($args,$condition) = @_;
     my @linkorder = ("blank","launchnav","closenav","firsthomework",      my $result;
      "everything","uncompleted","changefolder","clearbubbles");      if (ref($args) eq 'HASH') {
               if (ref($args->{'linkitems'}) eq 'HASH') {
     my $result .= (<<ENDBLOCK);              my $numlinks = scalar(keys(%{$args->{'linkitems'}}));
               <td align="left">              if ($numlinks > 1) {
 <script type="text/javascript">                  $result = '<td>'.
     function changeNavDisplay () {                            &Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',
  var navchoice = document.linkitems.toplink[document.linkitems.toplink.selectedIndex].value;                                                               undef,'RAT').
 ENDBLOCK                            '</td>'.
     foreach my $link (@linkorder) {                            '<td>&nbsp;</td>'.
  $result.= "if (navchoice == '$link') {".                            '<td class="LC_middle">'.&mt('Tools:').'</td>';
     $linkitems->{$link}{'cmd'}."}\n";              }
     }              $result .= '<td align="left">'."\n".
     $result.='}                         '<ul id="LC_toolbar">';
               </script>              my @linkorder = ('firsthomework','everything','uncompleted',
                    <form name="linkitems" method="post">                               'changefolder','clearbubbles','edittoplevel');
                        <span class="LC_nobreak"><select name="toplink">'."\n";              foreach my $link (@linkorder) {
     foreach my $link (@linkorder) {                  if (ref($args->{'linkitems'}{$link}) eq 'HASH') {
  if (defined($linkitems->{$link})) {                      if ($args->{'linkitems'}{$link}{'text'} ne '') {
     if ($linkitems->{$link}{'text'} ne '') {                          $args->{'linkitems'}{$link}{'cmd'}=~s/"/'/g;
  $result .= ' <option value="'.$link.'">'.                          if ($args->{'linkitems'}{$link}{'cmd'}) {
     $linkitems->{$link}{'text'}."</option>\n";                              my $link_id = 'LC_content_toolbar_'.$link;
     }                              if ($link eq 'changefolder') {
  }                                  if ($condition) {
                                       $link_id='LC_content_toolbar_changefolder_toggled';
                                   } else {
                                       $link_id='LC_content_toolbar_changefolder';
                                   }
                               }
                               $result .= '<li><a href="#" '.
                                          'onclick="'.$args->{'linkitems'}{$link}{'cmd'}.'" '.
                                          'id="'.$link_id.'" '.
                                          'class="LC_toolbarItem" '.
                                          'title="'.$args->{'linkitems'}{$link}{'text'}.'">'.
                                          '</a></li>'."\n";
                           }
                       }
                   }
               }
               $result .= '</ul>'.
                          '</td>';
               if (($numlinks==1) && (exists($args->{'linkitems'}{'edittoplevel'}))) {
                   $result .= '<td><a href="'.$args->{'linkitems'}{'edittoplevel'}{'cmd'}.'">'.
                              &mt('Content Editor').'</a></td>';
               }
           }
           if ($args->{'sort_html'}) {
               $result .= '<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>'.
                          '<td align="right">'.$args->{'sort_html'}.'</td>';
           }
       }
       if ($result) {
           $result = "<table><tr>$result</tr></table>";
     }      }
     $result .= '</select>&nbsp;<input type="button" name="chgnav"  
                    value="Go" onClick="javascript:changeNavDisplay()" />  
                 </span></form></td>'."\n";  
   
     return $result;      return $result;
 }  }
   
Line 1933  sub new { Line 2082  sub new {
     my $proto = shift;      my $proto = shift;
     my $class = ref($proto) || $proto;      my $class = ref($proto) || $proto;
     my $self = {};      my $self = {};
       bless($self); # So we can call change_user if necessary
   
       $self->{USERNAME} = shift || $env{'user.name'};
       $self->{DOMAIN}   = shift || $env{'user.domain'};
       $self->{CODE}     = shift;
       $self->{NOHIDE} = shift;
   
   
   
     # Resource cache stores navmap resources as we reference them. We generate      # Resource cache stores navmap resources as we reference them. We generate
     # them on-demand so we don't pay for creating resources unless we use them.      # them on-demand so we don't pay for creating resources unless we use them.
Line 1942  sub new { Line 2099  sub new {
     # failed      # failed
     $self->{NETWORK_FAILURE} = 0;      $self->{NETWORK_FAILURE} = 0;
   
     # tie the nav hash      # We can only tie the nav hash as done below if the username/domain
       # match the env one. Otherwise change_user does everything we need...since we can't
       # assume there are course hashes for the specific requested user:domain
       # Note: change_user is also called if we need the nav hash when printing CODEd 
       # assignments or printing an exam, in which the enclosing folder for the items in
       # the exam has hidden set.
       #
   
     my %navmaphash;      if (($self->{USERNAME} eq $env{'user.name'}) && ($self->{DOMAIN} eq $env{'user.domain'}) &&
     my %parmhash;           !$self->{CODE} && !$self->{NOHIDE}) {
     my $courseFn = $env{"request.course.fn"};  
     if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db",   # tie the nav hash
               &GDBM_READER(), 0640))) {  
         return undef;   my %navmaphash;
    my %parmhash;
    my $courseFn = $env{"request.course.fn"};
    if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db",
     &GDBM_READER(), 0640))) {
       return undef;
    }
   
    if (!(tie(%parmhash, 'GDBM_File', "${courseFn}_parms.db",
     &GDBM_READER(), 0640)))
    {
       untie %{$self->{PARM_HASH}};
       return undef;
    }
   
    $self->{NAV_HASH} = \%navmaphash;
    $self->{PARM_HASH} = \%parmhash;
    $self->{PARM_CACHE} = {};
       } else {
    $self->change_user($self->{USERNAME}, $self->{DOMAIN},  $self->{CODE}, $self->{NOHIDE});
     }      }
   
       return $self;
   }
   
   #
   #  In some instances it is useful to be able to dynamically change the
   # username/domain associated with a navmap (e.g. to navigate for someone
   # else besides the current user...if sufficiently privileged.
   # Parameters:
   #    user  - New user.
   #    domain- Domain the user belongs to.
   #    code  - Anonymous CODE in use.
   # Implicit inputs:
   #   
   sub change_user {
       my $self = shift;
       $self->{USERNAME} = shift;
       $self->{DOMAIN}   = shift;
       $self->{CODE}     = shift;
       $self->{NOHIDE}   = shift;
   
       # If the hashes are already tied make sure to break that bond:
   
       untie %{$self->{NAV_HASH}}; 
       untie %{$self->{PARM_HASH}};
   
       # The assumption is that we have to
       # use lonmap here to re-read the hash and from it reconstruct
       # new big and parameter hashes.  An implicit assumption at this time
       # is that the course file is probably not created locally yet
       # an that we will therefore just read without tying.
   
       my ($cdom, $cnum) = split(/\_/, $env{'request.course.id'});
   
       my %big_hash;
       &Apache::lonmap::loadmap($cnum, $cdom, $self->{USERNAME}, $self->{DOMAIN}, $self->{CODE}, $self->{NOHIDE}, \%big_hash);
       $self->{NAV_HASH} = \%big_hash;
   
   
   
       # Now clear the parm cache and reconstruct the parm hash from the big_hash
       # param.xxxx keys.
   
       $self->{PARM_CACHE} = {};
           
     if (!(tie(%parmhash, 'GDBM_File', "${courseFn}_parms.db",      my %parm_hash = {};
               &GDBM_READER(), 0640)))      foreach my $key (keys(%big_hash)) {
     {   if ($key =~ /^param\./) {
         untie %{$self->{PARM_HASH}};      my $param_key = $key;
         return undef;      $param_key =~ s/^param\.//;
       $parm_hash{$param_key} = $big_hash{$key};
    }
     }      }
   
     $self->{NAV_HASH} = \%navmaphash;      $self->{PARM_HASH} = \%parm_hash;
     $self->{PARM_HASH} = \%parmhash;  
     $self->{PARM_CACHE} = {};  
   
     bless($self);  
           
     return $self;  
 }  }
   
 sub generate_course_user_opt {  sub generate_course_user_opt {
     my $self = shift;      my $self = shift;
     if ($self->{COURSE_USER_OPT_GENERATED}) { return; }      if ($self->{COURSE_USER_OPT_GENERATED}) { return; }
   
     my $uname=$env{'user.name'};      my $uname=$self->{USERNAME};
     my $udom=$env{'user.domain'};      my $udom=$self->{DOMAIN};
   
     my $cid=$env{'request.course.id'};      my $cid=$env{'request.course.id'};
     my $cdom=$env{'course.'.$cid.'.domain'};      my $cdom=$env{'course.'.$cid.'.domain'};
     my $cnum=$env{'course.'.$cid.'.num'};      my $cnum=$env{'course.'.$cid.'.num'};
Line 2007  sub generate_course_user_opt { Line 2231  sub generate_course_user_opt {
     return;      return;
 }  }
   
   
   
 sub generate_email_discuss_status {  sub generate_email_discuss_status {
     my $self = shift;      my $self = shift;
     my $symb = shift;      my $symb = shift;
Line 2016  sub generate_email_discuss_status { Line 2242  sub generate_email_discuss_status {
     my $cdom=$env{'course.'.$cid.'.domain'};      my $cdom=$env{'course.'.$cid.'.domain'};
     my $cnum=$env{'course.'.$cid.'.num'};      my $cnum=$env{'course.'.$cid.'.num'};
           
     my %emailstatus = &Apache::lonnet::dump('email_status');      my %emailstatus = &Apache::lonnet::dump('email_status',$self->{DOMAIN},$self->{USERNAME});
     my $logoutTime = $emailstatus{'logout'};      my $logoutTime = $emailstatus{'logout'};
     my $courseLeaveTime = $emailstatus{'logout_'.$env{'request.course.id'}};      my $courseLeaveTime = $emailstatus{'logout_'.$env{'request.course.id'}};
     $self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ?      $self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ?
Line 2024  sub generate_email_discuss_status { Line 2250  sub generate_email_discuss_status {
     my %discussiontime = &Apache::lonnet::dump('discussiontimes',       my %discussiontime = &Apache::lonnet::dump('discussiontimes', 
        $cdom, $cnum);         $cdom, $cnum);
     my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss',      my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss',
                                         $env{'user.domain'},$env{'user.name'},'lastread');                                          $self->{DOMAIN},$self->{USERNAME},'lastread');
     my %lastreadtime = ();      my %lastreadtime = ();
     foreach my $key (keys %lastread) {      foreach my $key (keys(%lastread)) {
         my $shortkey = $key;          my $shortkey = $key;
         $shortkey =~ s/_lastread$//;          $shortkey =~ s/_lastread$//;
         $lastreadtime{$shortkey} = $lastread{$key};          $lastreadtime{$shortkey} = $lastread{$key};
Line 2034  sub generate_email_discuss_status { Line 2260  sub generate_email_discuss_status {
   
     my %feedback=();      my %feedback=();
     my %error=();      my %error=();
     my @keys = &Apache::lonnet::getkeys('nohist_email',$env{'user.domain'},      my @keys = &Apache::lonnet::getkeys('nohist_email',$self->{DOMAIN},
  $env{'user.name'});   $self->{USERNAME});
           
     foreach my $msgid (@keys) {      foreach my $msgid (@keys) {
  if ((!$emailstatus{$msgid}) || ($emailstatus{$msgid} eq 'new')) {   if ((!$emailstatus{$msgid}) || ($emailstatus{$msgid} eq 'new')) {
Line 2083  sub get_user_data { Line 2309  sub get_user_data {
   
     # Retrieve performance data on problems      # Retrieve performance data on problems
     my %student_data = Apache::lonnet::currentdump($env{'request.course.id'},      my %student_data = Apache::lonnet::currentdump($env{'request.course.id'},
    $env{'user.domain'},     $self->{DOMAIN},
    $env{'user.name'});     $self->{USERNAME});
     $self->{STUDENT_DATA} = \%student_data;      $self->{STUDENT_DATA} = \%student_data;
   
     $self->{RETRIEVED_USER_DATA} = 1;      $self->{RETRIEVED_USER_DATA} = 1;
Line 2313  resource object. Line 2539  resource object.
 Based on the symb of the resource, get a resource object for that  Based on the symb of the resource, get a resource object for that
 resource. This is one of the proper ways to get a resource object.  resource. This is one of the proper ways to get a resource object.
   
 =item * B<getMapByMapPc>(map_pc):  =item * B<getByMapPc>(map_pc):
   
 Based on the map_pc of the resource, get a resource object for  Based on the map_pc of the resource, get a resource object for
 the given map. This is one of the proper ways to get a resource object.  the given map. This is one of the proper ways to get a resource object.
Line 2398  sub parmval { Line 2624  sub parmval {
     my $self = shift;      my $self = shift;
     my ($what,$symb,$recurse)=@_;      my ($what,$symb,$recurse)=@_;
     my $hashkey = $what."|||".$symb;      my $hashkey = $what."|||".$symb;
       my $cache = $self->{PARM_CACHE};
     if (defined($self->{PARM_CACHE}->{$hashkey})) {      if (defined($self->{PARM_CACHE}->{$hashkey})) {
         if (ref($self->{PARM_CACHE}->{$hashkey}) eq 'ARRAY') {           if (ref($self->{PARM_CACHE}->{$hashkey}) eq 'ARRAY') { 
             if (defined($self->{PARM_CACHE}->{$hashkey}->[0])) {              if (defined($self->{PARM_CACHE}->{$hashkey}->[0])) {
Line 2412  sub parmval { Line 2638  sub parmval {
             return $self->{PARM_CACHE}->{$hashkey};              return $self->{PARM_CACHE}->{$hashkey};
         }          }
     }      }
   
     my $result = $self->parmval_real($what, $symb, $recurse);      my $result = $self->parmval_real($what, $symb, $recurse);
     $self->{PARM_CACHE}->{$hashkey} = $result;      $self->{PARM_CACHE}->{$hashkey} = $result;
     if (wantarray) {      if (wantarray) {
Line 2420  sub parmval { Line 2647  sub parmval {
     return $result->[0];      return $result->[0];
 }  }
   
   
 sub parmval_real {  sub parmval_real {
     my $self = shift;      my $self = shift;
     my ($what,$symb,$recurse) = @_;      my ($what,$symb,$recurse) = @_;
   
   
     # Make sure the {USER_OPT} and {COURSE_OPT} hashes are populated      # Make sure the {USER_OPT} and {COURSE_OPT} hashes are populated
     $self->generate_course_user_opt();      $self->generate_course_user_opt();
   
Line 2435  sub parmval_real { Line 2664  sub parmval_real {
         @cgrps = sort(@cgrps);          @cgrps = sort(@cgrps);
         $cgroup = $cgrps[0];          $cgroup = $cgrps[0];
     }       } 
     my $uname=$env{'user.name'};      my $uname=$self->{USERNAME};
     my $udom=$env{'user.domain'};      my $udom=$self->{DOMAIN};
   
     unless ($symb) { return ['']; }      unless ($symb) { return ['']; }
     my $result='';      my $result='';
   
     my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);      my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);
     $mapname = &Apache::lonnet::deversion($mapname);      $mapname = &Apache::lonnet::deversion($mapname);
       my ($recursed,@recurseup); 
       
 # ----------------------------------------------------- Cascading lookup scheme  # ----------------------------------------------------- Cascading lookup scheme
     my $rwhat=$what;      my $rwhat=$what;
     $what=~s/^parameter\_//;      $what=~s/^parameter\_//;
     $what=~s/\_/\./;      $what=~s/\_/\./;
   
     my $symbparm=$symb.'.'.$what;      my $symbparm=$symb.'.'.$what;
       my $recurseparm=$mapname.'___(rec).'.$what;
     my $mapparm=$mapname.'___(all).'.$what;      my $mapparm=$mapname.'___(all).'.$what;
     my $usercourseprefix=$cid;      my $usercourseprefix=$cid;
       
   
   
     my $grplevel=$usercourseprefix.'.['.$cgroup.'].'.$what;      my $grplevel=$usercourseprefix.'.['.$cgroup.'].'.$what;
     my $grplevelr=$usercourseprefix.'.['.$cgroup.'].'.$symbparm;      my $grplevelr=$usercourseprefix.'.['.$cgroup.'].'.$symbparm;
       my $grpleveli=$usercourseprefix.'.['.$cgroup.'].'.$recurseparm;
     my $grplevelm=$usercourseprefix.'.['.$cgroup.'].'.$mapparm;      my $grplevelm=$usercourseprefix.'.['.$cgroup.'].'.$mapparm;
   
   
     my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what;      my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what;
     my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm;      my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm;
       my $secleveli=$usercourseprefix.'.['.$csec.'].'.$recurseparm;
     my $seclevelm=$usercourseprefix.'.['.$csec.'].'.$mapparm;      my $seclevelm=$usercourseprefix.'.['.$csec.'].'.$mapparm;
   
   
     my $courselevel= $usercourseprefix.'.'.$what;      my $courselevel= $usercourseprefix.'.'.$what;
     my $courselevelr=$usercourseprefix.'.'.$symbparm;      my $courselevelr=$usercourseprefix.'.'.$symbparm;
       my $courseleveli=$usercourseprefix.'.'.$recurseparm;
     my $courselevelm=$usercourseprefix.'.'.$mapparm;      my $courselevelm=$usercourseprefix.'.'.$mapparm;
   
   
     my $useropt = $self->{USER_OPT};      my $useropt = $self->{USER_OPT};
     my $courseopt = $self->{COURSE_OPT};      my $courseopt = $self->{COURSE_OPT};
     my $parmhash = $self->{PARM_HASH};      my $parmhash = $self->{PARM_HASH};
Line 2472  sub parmval_real { Line 2712  sub parmval_real {
     if ($uname and defined($useropt)) {      if ($uname and defined($useropt)) {
         if (defined($$useropt{$courselevelr})) { return [$$useropt{$courselevelr},'resource']; }          if (defined($$useropt{$courselevelr})) { return [$$useropt{$courselevelr},'resource']; }
         if (defined($$useropt{$courselevelm})) { return [$$useropt{$courselevelm},'map']; }          if (defined($$useropt{$courselevelm})) { return [$$useropt{$courselevelm},'map']; }
           if (defined($$useropt{$courseleveli})) { return [$$useropt{$courseleveli},'map']; }
           unless ($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},'map'];
                   } else {
                       last;
                   }
               }
               my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
               if (defined($$useropt{$recursechk})) { return [$$useropt{$recursechk},'map']; } 
           }
         if (defined($$useropt{$courselevel})) { return [$$useropt{$courselevel},'course']; }          if (defined($$useropt{$courselevel})) { return [$$useropt{$courselevel},'course']; }
     }      }
   
Line 2479  sub parmval_real { Line 2736  sub parmval_real {
     if ($cgroup ne '' and defined($courseopt)) {      if ($cgroup ne '' and defined($courseopt)) {
         if (defined($$courseopt{$grplevelr})) { return [$$courseopt{$grplevelr},'resource']; }          if (defined($$courseopt{$grplevelr})) { return [$$courseopt{$grplevelr},'resource']; }
         if (defined($$courseopt{$grplevelm})) { return [$$courseopt{$grplevelm},'map']; }          if (defined($$courseopt{$grplevelm})) { return [$$courseopt{$grplevelm},'map']; }
           if (defined($$courseopt{$grpleveli})) { return [$$courseopt{$grpleveli},'map']; } 
           unless ($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},'map'];
                   } else {
                      last;
                   }
               }
               my $recursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(rec).'.$what;
               if (defined($$courseopt{$recursechk})) { return [$$courseopt{$recursechk},'map']; }      
           }
         if (defined($$courseopt{$grplevel})) { return [$$courseopt{$grplevel},'course']; }          if (defined($$courseopt{$grplevel})) { return [$$courseopt{$grplevel},'course']; }
     }      }
   
     if ($csec and defined($courseopt)) {      if ($csec ne '' and defined($courseopt)) {
         if (defined($$courseopt{$seclevelr})) { return [$$courseopt{$seclevelr},'resource']; }          if (defined($$courseopt{$seclevelr})) { return [$$courseopt{$seclevelr},'resource']; }
         if (defined($$courseopt{$seclevelm})) { return [$$courseopt{$seclevelm},'map']; }          if (defined($$courseopt{$seclevelm})) { return [$$courseopt{$seclevelm},'map']; }
           if (defined($$courseopt{$secleveli})) { return [$$courseopt{$secleveli},'map']; } 
           unless ($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},'map'];
                   } else {
                       last;
                   }
               }
               my $recursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(rec).'.$what;
               if (defined($$courseopt{$recursechk})) { return [$$courseopt{$recursechk},'map']; }
           }
         if (defined($$courseopt{$seclevel})) { return [$$courseopt{$seclevel},'course']; }          if (defined($$courseopt{$seclevel})) { return [$$courseopt{$seclevel},'course']; }
     }      }
   
Line 2508  sub parmval_real { Line 2799  sub parmval_real {
 # --------------------------------------------------- fifth, check more course  # --------------------------------------------------- fifth, check more course
     if (defined($courseopt)) {      if (defined($courseopt)) {
         if (defined($$courseopt{$courselevelm})) { return [$$courseopt{$courselevelm},'map']; }          if (defined($$courseopt{$courselevelm})) { return [$$courseopt{$courselevelm},'map']; }
           if (defined($$courseopt{$courseleveli})) { return [$$courseopt{$courseleveli},'map']; }
           unless ($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},'map'];
                   } else {
                       last;
                   }
               }
               my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
               if (defined($$courseopt{$recursechk})) {
                   return [$$courseopt{$recursechk},'map'];
               }
           }
         if (defined($$courseopt{$courselevel})) {          if (defined($$courseopt{$courselevel})) {
            my $ret = [$$courseopt{$courselevel},'course'];             my $ret = [$$courseopt{$courselevel},'course'];
            return $ret;             return $ret;
Line 2531  sub parmval_real { Line 2841  sub parmval_real {
     return [''];      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;
   }
   
   #
   #  Determines the open/close dates for printing a map that
   #  encloses a resource.
   #
   sub map_printdates {
       my ($self, $res, $part) = @_;
   
   
   
   
   
       my $opendate = $self->get_mapparam($res->symb(),'',"$part.printstartdate");
       my $closedate= $self->get_mapparam($res->symb(),'',"$part.printenddate");
   
   
       return ($opendate, $closedate);
   }
   
   sub get_mapparam {
       my ($self, $symb, $mapname, $what) = @_;
   
       # Ensure the course option hash is populated:
   
       $self->generate_course_user_opt();
   
       # Get the course id and section if there is one.
   
       my $cid=$env{'request.course.id'};
       my $csec=$env{'request.course.sec'};
       my $cgroup='';
       my @cgrps=split(/:/,$env{'request.course.groups'});
       if (@cgrps > 0) {
           @cgrps = sort(@cgrps);
           $cgroup = $cgrps[0];
       } 
       my $uname=$self->{USERNAME};
       my $udom=$self->{DOMAIN};
   
       unless ($symb || $mapname) { return; }
       my $result='';
       my ($recursed,@recurseup);
   
   
       # Figure out which map we are in.
   
       if ($symb && !$mapname) {
           my ($id,$fn);
           ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);
           $mapname = &Apache::lonnet::deversion($mapname);
       }
   
   
       my $rwhat=$what;
       $what=~s/^parameter\_//;
       $what=~s/\_/\./;
   
       # Build the hash keys for the lookup:
   
       my $mapparm=$mapname.'___(all).'.$what;
       my $recurseparm=$mapname.'___(rec).'.$what; 
       my $usercourseprefix=$cid;
   
   
       my $grplevelm    = "$usercourseprefix.[$cgroup].$mapparm";
       my $seclevelm    = "$usercourseprefix.[$csec].$mapparm";
       my $courselevelm = "$usercourseprefix.$mapparm";
   
       my $grpleveli    = "$usercourseprefix.[$cgroup].$recurseparm";
       my $secleveli    = "$usercourseprefix.[$csec].$recurseparm";
       my $courseleveli = "$usercourseprefix.$recurseparm";
   
       # Get handy references to the hashes we need in $self:
   
       my $useropt = $self->{USER_OPT};
       my $courseopt = $self->{COURSE_OPT};
       my $parmhash = $self->{PARM_HASH};
   
       # Check per user 
   
   
   
       if ($uname and defined($useropt)) {
    if (defined($$useropt{$courselevelm})) {
       return $$useropt{$courselevelm};
    }
           if (defined($$useropt{$courseleveli})) {
               return $$useropt{$courseleveli};
           }
           unless ($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};
                   } else {
                       last;
                   }
               }
               my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
               if (defined($$useropt{$recursechk})) {
                   return $$useropt{$recursechk};
               }
           }
       }
   
       # Check course -- group
   
   
   
       if ($cgroup ne '' and defined ($courseopt)) {
    if (defined($$courseopt{$grplevelm})) {
       return $$courseopt{$grplevelm};
    }
           if (defined($$courseopt{$grpleveli})) {
               return $$courseopt{$grpleveli};
           }
           unless ($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};
                   } else {
                       last;
                   }
               }
               my $recursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(rec).'.$what;
               if (defined($$courseopt{$recursechk})) {
                   return $$courseopt{$recursechk};
               }
           }
       }
   
       # Check course -- section
   
   
       if ($csec ne '' and defined($courseopt)) {
    if (defined($$courseopt{$seclevelm})) {
       return $$courseopt{$seclevelm};
    }
           if (defined($$courseopt{$secleveli})) {
               return $$courseopt{$secleveli};
           }
           unless ($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};
                   } else {
                       last;
                   }
               }
               my $recursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(rec).'.$what;
               if (defined($$courseopt{$recursechk})) {
                   return $$courseopt{$recursechk};
               }
           }
       }
       # Check the map parameters themselves:
   
       if ($symb) {
           my $symbparm=$symb.'.'.$what;
           my $thisparm = $$parmhash{$symbparm};
           if (defined($thisparm)) {
       return $thisparm;
           }
       }
   
   
       # Additional course parameters:
   
       if (defined($courseopt)) {
    if (defined($$courseopt{$courselevelm})) {
       return $$courseopt{$courselevelm};
    }
           unless ($recursed) {
               @recurseup = $self->recurseup_maps($mapname);
               $recursed = 1;
           }
           if (@recurseup) {
               foreach my $item (@recurseup) {
                   my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
                   if (defined($$courseopt{$norecursechk})) {
                       if ($what =~ /\.(encrypturl|hiddenresource)$/) {
                           return $$courseopt{$norecursechk};
                       } else {
                           last;
                       }
                   }
                   my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what;
                   if (defined($$courseopt{$recursechk})) {
                       return $$courseopt{$recursechk};
                   }
               }
           }
       }
       return undef; # Undefined if we got here.
   }
   
   sub course_printdates {
       my ($self, $symb,  $part) = @_;
   
   
       my $opendate  = $self->getcourseparam($symb, $part . '.printstartdate');
       my $closedate = $self->getcourseparam($symb, $part . '.printenddate');
       return ($opendate, $closedate);
   
   }
   
   sub getcourseparam {
       my ($self, $symb, $what) = @_;
   
       $self->generate_course_user_opt(); # If necessary populate the hashes.
   
       my $uname = $self->{USERNAME};
       my $udom  = $self->{DOMAIN};
       
       # Course, section, group ids come from the env:
   
       my $cid   = $env{'request.course.id'};
       my $csec  = $env{'request.course.sec'};
       my $cgroup = ''; # Assume no group
   
       my @cgroups = split(/:/, $env{'request.course.groups'});
       if(@cgroups > 0) {
    @cgroups = sort(@cgroups);
    $cgroup  = $cgroups[0]; # There is a course group. 
      }
       my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);
       $mapname = &Apache::lonnet::deversion($mapname);
   
       #
       # Make the various lookup keys:
       #
   
       $what=~s/^parameter\_//;
       $what=~s/\_/\./;
   
       # Local refs to the hashes we're going to look at:
   
       my $useropt   = $self->{USER_OPT};
       my $courseopt = $self->{COURSE_OPT};
   
       # 
       # We want the course level stuff from the way
       # parmval_real operates 
       # TODO: Factor some of this stuff out of
       # both parmval_real and here
       #
       my $courselevel = $cid . '.' .  $what;
       my $grplevel    = $cid . '.[' . $cgroup   . ']' . $what;
       my $seclevel    = $cid . '.[' . $csec     . ']' . $what;
   
   
       # Try for the user's course level option:
   
       if ($uname and defined($useropt)) {
    if (defined($$useropt{$courselevel})) {
       return $$useropt{$courselevel};
    }
       }
       # Try for the group's course level option:
   
       if ($cgroup ne '' and defined($courseopt)) {
    if (defined($$courseopt{$grplevel})) {
       return $$courseopt{$grplevel};
    }
       }
   
       #  Try for section level parameters:
   
       if ($csec ne '' and defined($courseopt)) {
    if (defined($$courseopt{$seclevel})) {
       return $$courseopt{$seclevel};
    }
       }
       # Try for 'additional' course parameters:
   
       if (defined($courseopt)) {
    if (defined($$courseopt{$courselevel})) {
       return $$courseopt{$courselevel};
    }
       }
       return undef;
   
   }
   
   
 =pod  =pod
   
 =item * B<getResourceByUrl>(url,multiple):  =item * B<getResourceByUrl>(url,multiple):
Line 2545  resource appears multiple times in the c Line 3169  resource appears multiple times in the c
 will be returned (useful for maps), unless the multiple parameter has  will be returned (useful for maps), unless the multiple parameter has
 been included, in which case all instances are returned in an array.  been included, in which case all instances are returned in an array.
   
 =item * B<retrieveResources>(map, filterFunc, recursive, bailout, showall):  =item * B<retrieveResources>(map, filterFunc, recursive, bailout, showall, noblockcheck):
   
 The map is a specification of a map to retreive the resources from,  The map is a specification of a map to retreive the resources from,
 either as a url or as an object. The filterFunc is a reference to a  either as a url or as an object. The filterFunc is a reference to a
Line 2554  true if the resource should be included, Line 3178  true if the resource should be included,
 be. If recursive is true, the map will be recursively examined,  be. If recursive is true, the map will be recursively examined,
 otherwise it will not be. If bailout is true, the function will return  otherwise it will not be. If bailout is true, the function will return
 as soon as it finds a resource, if false it will finish. If showall is  as soon as it finds a resource, if false it will finish. If showall is
 true it will not hide maps that contain nothing but one other map. By  true it will not hide maps that contain nothing but one other map. The 
 default, the map is the top-level map of the course, filterFunc is a  noblockcheck arg is propagated to become the sixth arg in the call to
 function that always returns 1, recursive is true, bailout is false,  lonnet::allowed when checking a resource's availability during collection
 showall is false. The resources will be returned in a list containing  of resources using the iterator. noblockcheck needs to be true if 
 the resource objects for the corresponding resources, with B<no  retrieveResources() was called by a routine that itself was called by 
 structure information> in the list; regardless of branching,  lonnet::allowed, in order to avoid recursion.  By default the map  
 recursion, etc., it will be a flat list.  is the top-level map of the course, filterFunc is a function that 
   always returns 1, recursive is true, bailout is false, showall is
   false. The resources will be returned in a list containing the
   resource objects for the corresponding resources, with B<no structure 
   information> in the list; regardless of branching, recursion, etc.,
   it will be a flat list.
   
 Thus, this is suitable for cases where you don't want the structure,  Thus, this is suitable for cases where you don't want the structure,
 just a list of all resources. It is also suitable for finding out how  just a list of all resources. It is also suitable for finding out how
Line 2583  in the filter function. Line 3212  in the filter function.
 Retrieves version infomation for a url. Returns the version (a number, or   Retrieves version infomation for a url. Returns the version (a number, or 
 the string "mostrecent") for resources which have version information in    the string "mostrecent") for resources which have version information in  
 the big hash.  the big hash.
       
 =cut  =cut
   
   
Line 2627  sub retrieveResources { Line 3256  sub retrieveResources {
     my $bailout = shift;      my $bailout = shift;
     if (!defined($bailout)) { $bailout = 0; }      if (!defined($bailout)) { $bailout = 0; }
     my $showall = shift;      my $showall = shift;
       my $noblockcheck = shift;
     # Create the necessary iterator.      # Create the necessary iterator.
     if (!ref($map)) { # assume it's a url of a map.      if (!ref($map)) { # assume it's a url of a map.
         $map = $self->getResourceByUrl($map);          $map = $self->getResourceByUrl($map);
Line 2656  sub retrieveResources { Line 3286  sub retrieveResources {
     # Run down the iterator and collect the resources.      # Run down the iterator and collect the resources.
     my $curRes;      my $curRes;
   
     while ($curRes = $it->next()) {      while ($curRes = $it->next(undef,$noblockcheck)) {
         if (ref($curRes)) {          if (ref($curRes)) {
             if (!&$filterFunc($curRes)) {              if (!&$filterFunc($curRes)) {
                 next;                  next;
Line 2807  Note that inside of the loop, it's frequ Line 3437  Note that inside of the loop, it's frequ
 resource objects will be references, and any non-references will   resource objects will be references, and any non-references will 
 be the tokens described above.  be the tokens described above.
   
 Also note there is some old code floating around that trys to track  The next() routine can take two (optional) arguments:
   closeAllPages - if true will not recurse down a .page
   noblockcheck - passed to browsePriv() for passing as sixth arg to
   call to lonnet::allowed. This needs to be set if retrieveResources
   was already called from another routine called within lonnet::allowed, 
   so as to prevent recursion.
   
   Also note there is some old code floating around that tries to track
 the depth of the iterator to see when it's done; do not copy that   the depth of the iterator to see when it's done; do not copy that 
 code. It is difficult to get right and harder to understand than  code. It is difficult to get right and harder to understand than
 this. They should be migrated to this new style.  this. They should be migrated to this new style.
Line 2838  sub new { Line 3475  sub new {
     weaken($self->{NAV_MAP} = shift);      weaken($self->{NAV_MAP} = shift);
     return undef unless ($self->{NAV_MAP});      return undef unless ($self->{NAV_MAP});
   
       $self->{USERNAME} = $self->{NAV_MAP}->{USERNAME};
       $self->{DOMAIN}   = $self->{NAV_MAP}->{DOMAIN};
   
     # Handle the parameters      # Handle the parameters
     $self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource();      $self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource();
     $self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource();      $self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource();
Line 2951  sub new { Line 3591  sub new {
     if ($resourceCount == 1 && $resource->is_sequence() && !$self->{FORCE_TOP}) {       if ($resourceCount == 1 && $resource->is_sequence() && !$self->{FORCE_TOP}) { 
         my $firstResource = $resource->map_start();          my $firstResource = $resource->map_start();
         my $finishResource = $resource->map_finish();          my $finishResource = $resource->map_finish();
         return    return Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,
             Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,   $finishResource, $self->{FILTER},
                                               $finishResource, $self->{FILTER},   $self->{ALREADY_SEEN}, 
                                               $self->{ALREADY_SEEN},    $self->{CONDITION},
                                               $self->{CONDITION},   $self->{FORCE_TOP});
       $self->{FORCE_TOP});  
           
     }      }
   
     # Set up some bookkeeping information.      # Set up some bookkeeping information.
Line 2976  sub new { Line 3614  sub new {
     $self->{ALREADY_SEEN}->{$self->{FIRST_RESOURCE}->{ID}} = 1;      $self->{ALREADY_SEEN}->{$self->{FIRST_RESOURCE}->{ID}} = 1;
   
     bless ($self);      bless ($self);
   
     return $self;      return $self;
 }  }
   
 sub next {  sub next {
     my $self = shift;      my $self = shift;
     my $closeAllPages=shift;      my $closeAllPages=shift;
       my $noblockcheck = shift;
     if ($self->{FINISHED}) {      if ($self->{FINISHED}) {
  return END_ITERATOR();   return END_ITERATOR();
     }      }
Line 2991  sub next { Line 3629  sub next {
     # do so.      # do so.
     if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0}) {      if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0}) {
         $self->{HAVE_RETURNED_0} = 1;          $self->{HAVE_RETURNED_0} = 1;
    my $nextTopLevel = $self->{NAV_MAP}->getById('0.0');
         return $self->{NAV_MAP}->getById('0.0');          return $self->{NAV_MAP}->getById('0.0');
     }      }
     if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0_BEGIN_MAP}) {      if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0_BEGIN_MAP}) {
Line 3010  sub next { Line 3649  sub next {
         if ($self->{RECURSIVE_DEPTH} == 0) {          if ($self->{RECURSIVE_DEPTH} == 0) {
             $self->{RECURSIVE_ITERATOR_FLAG} = 0;              $self->{RECURSIVE_ITERATOR_FLAG} = 0;
         }          }
   
         return $next;          return $next;
     }      }
   
Line 3086  sub next { Line 3724  sub next {
     # So we need to look at all the resources we can get to from here,      # So we need to look at all the resources we can get to from here,
     # categorize them if we haven't seen them, remember if we have a new      # categorize them if we haven't seen them, remember if we have a new
     my $nextUnfiltered = $here->getNext();      my $nextUnfiltered = $here->getNext();
   
   
     my $maxDepthAdded = -1;      my $maxDepthAdded = -1;
           
     for (@$nextUnfiltered) {      for (@$nextUnfiltered) {
Line 3119  sub next { Line 3759  sub next {
         $self->{RECURSIVE_ITERATOR_FLAG} = 1;          $self->{RECURSIVE_ITERATOR_FLAG} = 1;
         my $firstResource = $self->{HERE}->map_start();          my $firstResource = $self->{HERE}->map_start();
         my $finishResource = $self->{HERE}->map_finish();          my $finishResource = $self->{HERE}->map_finish();
   
         $self->{RECURSIVE_ITERATOR} =           $self->{RECURSIVE_ITERATOR} = 
             Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,              Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,
                                               $finishResource, $self->{FILTER},                                                $finishResource, $self->{FILTER},
Line 3131  sub next { Line 3770  sub next {
     # If this is a blank resource, don't actually return it.      # If this is a blank resource, don't actually return it.
     # Should you ever find you need it, make sure to add an option to the code      # Should you ever find you need it, make sure to add an option to the code
     #  that you can use; other things depend on this behavior.      #  that you can use; other things depend on this behavior.
     my $browsePriv = $self->{HERE}->browsePriv();      my $browsePriv = $self->{HERE}->browsePriv($noblockcheck);
     if (!$self->{HERE}->src() ||       if (!$self->{HERE}->src() || 
         (!($browsePriv eq 'F') && !($browsePriv eq '2')) ) {          (!($browsePriv eq 'F') && !($browsePriv eq '2')) ) {
         return $self->next($closeAllPages);          return $self->next($closeAllPages);
Line 3211  sub new { Line 3850  sub new {
     weaken($self->{NAV_MAP} = shift);      weaken($self->{NAV_MAP} = shift);
     return undef unless ($self->{NAV_MAP});      return undef unless ($self->{NAV_MAP});
   
       $self->{USERNAME} = $self->{NAV_MAP}->{USERNAME};
       $self->{DOMAIN}   = $self->{NAV_MAP}->{DOMAIN};
   
     $self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource();      $self->{FIRST_RESOURCE} = shift || $self->{NAV_MAP}->firstResource();
     $self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource();      $self->{FINISH_RESOURCE} = shift || $self->{NAV_MAP}->finishResource();
   
Line 3447  sub new { Line 4089  sub new {
     weaken($self->{NAV_MAP} = shift);      weaken($self->{NAV_MAP} = shift);
     $self->{ID} = shift;      $self->{ID} = shift;
   
       $self->{USERNAME} = $self->{NAV_MAP}->{USERNAME};
       $self->{DOMAIN}   = $self->{NAV_MAP}->{DOMAIN};
   
     # Store this new resource in the parent nav map's cache.      # Store this new resource in the parent nav map's cache.
     $self->{NAV_MAP}->{RESOURCE_CACHE}->{$self->{ID}} = $self;      $self->{NAV_MAP}->{RESOURCE_CACHE}->{$self->{ID}} = $self;
     $self->{RESOURCE_ERROR} = 0;      $self->{RESOURCE_ERROR} = 0;
   
       $self->{DUEDATE_CACHE} = undef;
   
     # A hash that can be used by two-pass algorithms to store data      # A hash that can be used by two-pass algorithms to store data
     # about this resource in. Not used by the resource object      # about this resource in. Not used by the resource object
     # directly.      # directly.
     $self->{DATA} = {};      $self->{DATA} = {};
          
     bless($self);      bless($self);
           
       # This is a speed optimization, to avoid calling symb() too often.
       $self->{SYMB} = $self->symb();
   
     return $self;      return $self;
 }  }
   
Line 3468  sub navHash { Line 4118  sub navHash {
     my $self = shift;      my $self = shift;
     my $param = shift;      my $param = shift;
     my $id = shift;      my $id = shift;
     return $self->{NAV_MAP}->navhash($param . ($id?$self->{ID}:""));      my $arg = $param . ($id?$self->{ID}:"");
       if (ref($self) && ref($self->{NAV_MAP}) && defined($arg)) {
           return $self->{NAV_MAP}->navhash($arg);
       }
       return;
 }  }
   
 =pod  =pod
Line 3565  sub src { Line 4219  sub src {
 }  }
 sub shown_symb {  sub shown_symb {
     my $self=shift;      my $self=shift;
     if ($self->encrypted()) {return &Apache::lonenc::encrypted($self->symb());}      if ($self->encrypted()) {return &Apache::lonenc::encrypted($self->{SYMB});}
     return $self->symb();      return $self->{SYMB};
 }  }
 sub id {  sub id {
     my $self=shift;      my $self=shift;
Line 3579  sub enclosing_map_src { Line 4233  sub enclosing_map_src {
 }  }
 sub symb {  sub symb {
     my $self=shift;      my $self=shift;
       if (defined $self->{SYMB}) { return $self->{SYMB}; }
     (my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;      (my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;
     my $symbSrc = &Apache::lonnet::declutter($self->src());      my $symbSrc = &Apache::lonnet::declutter($self->src());
     my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first))       my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first)) 
Line 3587  sub symb { Line 4242  sub symb {
 }  }
 sub wrap_symb {  sub wrap_symb {
     my $self = shift;      my $self = shift;
     return $self->{NAV_MAP}->wrap_symb($self->symb());      return $self->{NAV_MAP}->wrap_symb($self->{SYMB});
 }  }
 sub title {   sub title { 
     my $self=shift;       my $self=shift; 
Line 3706  sub is_practice { Line 4361  sub is_practice {
 sub is_problem {  sub is_problem {
     my $self=shift;      my $self=shift;
     my $src = $self->src();      my $src = $self->src();
     if ($src =~ /\.(problem|exam|quiz|assess|survey|form|library|task)$/) {      if ($src =~ /$LONCAPA::assess_re/) {
  return !($self->is_practice());   return !($self->is_practice());
     }      }
     return 0;      return 0;
 }  }
   #
   #  The has below is the set of status that are considered 'incomplete'
   #
   my %incomplete_hash = 
   (
    TRIES_LEFT()     => 1,
    OPEN()           => 1,
    ATTEMPTED()      => 1
   
    );
   #
   #  Return tru if a problem is incomplete... for now incomplete means that
   #  any part of the problem is incomplete. 
   #  Note that if the resources is not a problem, 0 is returned.
   #
   sub is_incomplete {
       my $self = shift;
       if ($self->is_problem()) {
    foreach my $part (@{$self->parts()}) {
       if (exists($incomplete_hash{$self->status($part)})) {
    return 1;
       }
    }
       }
       return 0;
          
   }
 sub is_raw_problem {  sub is_raw_problem {
     my $self=shift;      my $self=shift;
     my $src = $self->src();      my $src = $self->src();
     if ($src =~ /\.(problem|exam|quiz|assess|survey|form|library|task)$/) {      if ($src =~ /$LONCAPA::assess_re/) {
         return 1;          return 1;
     }      }
     return 0;      return 0;
Line 3746  sub is_survey { Line 4428  sub is_survey {
     my $self = shift();      my $self = shift();
     my $part = shift();      my $part = shift();
     my $type = $self->parmval('type',$part);      my $type = $self->parmval('type',$part);
     if ($type eq 'survey') {      if (($type eq 'survey') || ($type eq 'surveycred')) {
         return 1;          return 1;
     }      }
     if ($self->src() =~ /\.(survey)$/) {      if ($self->src() =~ /\.(survey)$/) {
Line 3754  sub is_survey { Line 4436  sub is_survey {
     }      }
     return 0;      return 0;
 }  }
   sub is_anonsurvey {
       my $self = shift();
       my $part = shift();
       my $type = $self->parmval('type',$part);
       if (($type eq 'anonsurvey') || ($type eq 'anonsurveycred')) {
           return 1;
       }
       return 0;
   }
 sub is_task {  sub is_task {
     my $self=shift;      my $self=shift;
     my $src = $self->src();      my $src = $self->src();
Line 3774  sub parmval { Line 4465  sub parmval {
     if (!defined($part)) {       if (!defined($part)) { 
         $part = '0';           $part = '0'; 
     }      }
     return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb());      return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->{SYMB});
 }  }
   
 =pod  =pod
Line 3807  resource of the map. Line 4498  resource of the map.
   
 Returns a string with the type of the map in it.  Returns a string with the type of the map in it.
   
   =item * B<map_hierarchy>:
   
   Returns a string with a comma-separated ordered list of map_pc IDs
   for the hierarchy of maps containing a map, with the top level
   map first, then descending to deeper levels, with the enclosing map last.
   
 =back  =back
   
 =cut  =cut
Line 3837  sub map_type { Line 4534  sub map_type {
     my $pc = $self->map_pc();      my $pc = $self->map_pc();
     return $self->navHash("map_type_$pc", 0);      return $self->navHash("map_type_$pc", 0);
 }  }
   sub map_hierarchy {
       my $self = shift;
       my $pc = $self->map_pc();
       return $self->navHash("map_hierarchy_$pc", 0);
   }
   
 #####  #####
 # Property queries  # Property queries
Line 3867  their code.) Line 4569  their code.)
   
 =over 4  =over 4
   
 =item * B<acc>:  
   =item * B<printable>
   
   returns true if the current date is such that the 
   specified resource part is printable.
   
   
   =item * B<resprintable>
   
   Returns true if all parts in the resource are printable making the
   entire resource printable.
   
   =item * B<acc>
   
 Get the Client IP/Name Access Control information.  Get the Client IP/Name Access Control information.
   
Line 3920  Get the weight for the problem. Line 4634  Get the weight for the problem.
   
 =cut  =cut
   
   
   
   
   sub printable {
   
       my ($self, $part) = @_;
   
       #  The following cases apply:
       #  - If a start date is not set, it is replaced by the open date.
       #  - Ditto for start/open replaced by content open.
       #  - If neither start nor printdates are set the part is printable.
       #  - Start date set but no end date: Printable if now >= start date.
       #  - End date set but no start date: Printable if now <= end date.
       #  - both defined: printable if start <= now <= end
       #
   
       # Get the print open/close dates for the resource.
   
       my $start = $self->parmval("printstartdate", $part);
       my $end   = $self->parmval("printenddate", $part);
   
       if (!$start) {
    $start = $self->parmval("opendate", $part);
       }
       if (!$start) {
    $start = $self->parmval("contentopen", $part);
       }
   
   
       my $now  = time();
   
   
       my $startok = 1;
       my $endok   = 1;
   
       if ((defined $start) && ($start ne '')) {
    $startok = $start <= $now;
       }
       if ((defined $end) && ($end != '')) {
    $endok = $end >= $now;
       }
       return $startok && $endok;
   }
   
   sub resprintable {
       my $self = shift;
   
       # get parts...or realize there are no parts.
   
       my $partsref = $self->parts();
       my @parts    = @$partsref;
   
       if (!@parts) {
    return $self->printable(0);
       } else {
    foreach my $part  (@parts) {
       if (!$self->printable($part)) { 
    return 0; 
       }
    }
    return 1;
       }
   }
   
 sub acc {  sub acc {
     (my $self, my $part) = @_;      (my $self, my $part) = @_;
     my $acc = $self->parmval("acc", $part);      my $acc = $self->parmval("acc", $part);
Line 3940  sub awarded { Line 4718  sub awarded {
     my $self = shift; my $part = shift;      my $self = shift; my $part = shift;
     $self->{NAV_MAP}->get_user_data();      $self->{NAV_MAP}->get_user_data();
     if (!defined($part)) { $part = '0'; }      if (!defined($part)) { $part = '0'; }
     return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'};      return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.awarded'};
   }
   sub taskversion {
       my $self = shift; my $part = shift;
       $self->{NAV_MAP}->get_user_data();
       if (!defined($part)) { $part = '0'; }
       return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.version'};
   }
   sub taskstatus {
       my $self = shift; my $part = shift;
       $self->{NAV_MAP}->get_user_data();
       if (!defined($part)) { $part = '0'; }
       return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$self->taskversion($part).'.'.$part.'.status'};
   }
   sub solved {
       my $self = shift; my $part = shift;
       $self->{NAV_MAP}->get_user_data();
       if (!defined($part)) { $part = '0'; }
       return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.solved'};
   }
   sub checkedin {
       my $self = shift; my $part = shift;
       $self->{NAV_MAP}->get_user_data();
       if (!defined($part)) { $part = '0'; }
       if ($self->is_task()) {
           my $version = $self->taskversion($part);
           return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$version .'.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$version .'.'.$part.'.checkedin.slot'});
       } else {
           return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.checkedin.slot'});
       }
 }  }
 # this should work exactly like the copy in lonhomework.pm  # this should work exactly like the copy in lonhomework.pm
   # Why is there a copy in lonhomework?  Why not centralized?
   #
   #  TODO: Centralize duedate.
   #
   
 sub duedate {  sub duedate {
     (my $self, my $part) = @_;      (my $self, my $part) = @_;
       if (defined ($self->{DUEDATE_CACHE}->{$part})) {
           return $self->{DUEDATE_CACHE}->{$part};
       }
     my $date;      my $date;
     my @interval=$self->parmval("interval", $part);      my @interval=$self->parmval("interval", $part);
     my $due_date=$self->parmval("duedate", $part);      my $due_date=$self->parmval("duedate", $part);
     if ($interval[0] =~ /\d+/) {      if ($interval[0] =~ /^(\d+)/) {
        my $first_access=&Apache::lonnet::get_first_access($interval[1],          my $timelimit = $1;
                                                           $self->symb);          my $first_access=&Apache::lonnet::get_first_access($interval[1],
                                                              $self->{SYMB});
  if (defined($first_access)) {   if (defined($first_access)) {
            my $interval = $first_access+$interval[0];              my $interval = $first_access+$timelimit;
     $date = (!$due_date || $interval < $due_date) ? $interval       $date = (!$due_date || $interval < $due_date) ? $interval 
                                                           : $due_date;                                                            : $due_date;
  } else {   } else {
Line 3961  sub duedate { Line 4777  sub duedate {
     } else {      } else {
  $date = $due_date;   $date = $due_date;
     }      }
       $self->{DUEDATE_CACHE}->{$part} = $date;
     return $date;      return $date;
 }  }
 sub handgrade {  sub handgrade {
Line 4022  sub weight { Line 4839  sub weight {
     my $self = shift; my $part = shift;      my $self = shift; my $part = shift;
     if (!defined($part)) { $part = '0'; }      if (!defined($part)) { $part = '0'; }
     my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',      my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
                                 $self->symb(), $env{'user.domain'},                                  $self->{SYMB}, $self->{DOMAIN},
                                 $env{'user.name'},                                  $self->{USERNAME},
                                 $env{'request.course.sec'});                                  $env{'request.course.sec'});
     return $weight;      return $weight;
 }  }
Line 4031  sub part_display { Line 4848  sub part_display {
     my $self= shift(); my $partID = shift();      my $self= shift(); my $partID = shift();
     if (! defined($partID)) { $partID = '0'; }      if (! defined($partID)) { $partID = '0'; }
     my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',      my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',
                                      $self->symb);                                       $self->{SYMB});
     if (! defined($display) || $display eq '') {      if (! defined($display) || $display eq '') {
         $display = $partID;          $display = $partID;
     }      }
     return $display;      return $display;
 }  }
   sub slot_control {
       my $self=shift(); my $part = shift();
       if (!defined($part)) { $part = '0'; }
       my $useslots = $self->parmval("useslots", $part);
       my $availablestudent = $self->parmval("availablestudent", $part);
       my $available = $self->parmval("available", $part); 
       return ($useslots,$availablestudent,$available);
   }
   
 # Multiple things need this  # Multiple things need this
 sub getReturnHash {  sub getReturnHash {
     my $self = shift;      my $self = shift;
           
     if (!defined($self->{RETURN_HASH})) {      if (!defined($self->{RETURN_HASH})) {
         my %tmpHash  = &Apache::lonnet::restore($self->symb());          #my %tmpHash  = &Apache::lonnet::restore($self->{SYMB},undef,$self->{DOMAIN},$self->{USERNAME});
         $self->{RETURN_HASH} = \%tmpHash;          #$self->{RETURN_HASH} = \%tmpHash;
           # When info is retrieved for several resources (as when rendering a directory),
           # it is much faster to use the user profile dump and avoid repeated lonnet requests
           # (especially since lonnet::currentdump is using Lond directly whenever possible,
           # and lonnet::restore is not at this point).
           $self->{NAV_MAP}->get_user_data();
           $self->{RETURN_HASH} = $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}};
     }      }
 }         }       
   
Line 4108  and use the link as appropriate. Line 4939  and use the link as appropriate.
   
 sub hasDiscussion {  sub hasDiscussion {
     my $self = shift;      my $self = shift;
     return $self->{NAV_MAP}->hasDiscussion($self->symb());      return $self->{NAV_MAP}->hasDiscussion($self->{SYMB});
 }  }
   
 sub last_post_time {  sub last_post_time {
     my $self = shift;      my $self = shift;
     return $self->{NAV_MAP}->last_post_time($self->symb());      return $self->{NAV_MAP}->last_post_time($self->{SYMB});
 }  }
   
 sub discussion_info {  sub discussion_info {
     my ($self,$filter) = @_;      my ($self,$filter) = @_;
     return $self->{NAV_MAP}->discussion_info($self->symb(),$filter);      return $self->{NAV_MAP}->discussion_info($self->{SYMB},$filter);
 }  }
   
 sub getFeedback {  sub getFeedback {
     my $self = shift;      my $self = shift;
     my $source = $self->src();      my $source = $self->src();
     my $symb = $self->symb();      my $symb = $self->{SYMB};
     if ($source =~ /^\/res\//) { $source = substr $source, 5; }      if ($source =~ /^\/res\//) { $source = substr $source, 5; }
     return $self->{NAV_MAP}->getFeedback($symb,$source);      return $self->{NAV_MAP}->getFeedback($symb,$source);
 }  }
Line 4132  sub getFeedback { Line 4963  sub getFeedback {
 sub getErrors {  sub getErrors {
     my $self = shift;      my $self = shift;
     my $source = $self->src();      my $source = $self->src();
     my $symb = $self->symb();      my $symb = $self->{SYMB};
     if ($source =~ /^\/res\//) { $source = substr $source, 5; }      if ($source =~ /^\/res\//) { $source = substr $source, 5; }
     return $self->{NAV_MAP}->getErrors($symb,$source);      return $self->{NAV_MAP}->getErrors($symb,$source);
 }  }
Line 4282  sub extractParts { Line 5113  sub extractParts {
  if ($partorder) {   if ($partorder) {
     my @parts;      my @parts;
     for my $part (split (/,/,$partorder)) {      for my $part (split (/,/,$partorder)) {
  if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) {   if (!Apache::loncommon::check_if_partid_hidden($part, $self->{SYMB})) {
     push @parts, $part;      push @parts, $part;
     $parts{$part} = 1;      $parts{$part} = 1;
  }   }
Line 4300  sub extractParts { Line 5131  sub extractParts {
     my $part = $1;      my $part = $1;
     # This floods the logs if it blows up      # This floods the logs if it blows up
     if (defined($parts{$part})) {      if (defined($parts{$part})) {
  &Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->symb());   &Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->{SYMB});
     }      }
           
     # check to see if part is turned off.      # check to see if part is turned off.
           
     if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) {      if (!Apache::loncommon::check_if_partid_hidden($part, $self->{SYMB})) {
  $parts{$part} = 1;   $parts{$part} = 1;
     }      }
  }   }
     }      }
     my @sortedParts = sort keys %parts;      my @sortedParts = sort(keys(%parts));
     $self->{PARTS} = \@sortedParts;      $self->{PARTS} = \@sortedParts;
         }          }
                   
Line 4331  sub extractParts { Line 5162  sub extractParts {
         # So we have to use our knowlege of part names to figure out           # So we have to use our knowlege of part names to figure out 
         # where the part names begin and end, and even then, it is possible          # where the part names begin and end, and even then, it is possible
         # to construct ambiguous situations.          # to construct ambiguous situations.
         foreach my $data (split /,/, $metadata) {          foreach my $data (split(/,/, $metadata)) {
             if ($data =~ /^([a-zA-Z]+)response_(.*)/              if ($data =~ /^([a-zA-Z]+)response_(.*)/
  || $data =~ /^(Task)_(.*)/) {   || $data =~ /^(Task)_(.*)/) {
                 my $responseType = $1;                  my $responseType = $1;
                 my $partStuff = $2;                  my $partStuff = $2;
                 my $partIdSoFar = '';                  my $partIdSoFar = '';
                 my @partChunks = split /_/, $partStuff;                  my @partChunks = split(/_/, $partStuff);
                 my $i = 0;                  my $i = 0;
                 for ($i = 0; $i < scalar(@partChunks); $i++) {                  for ($i = 0; $i < scalar(@partChunks); $i++) {
                     if ($partIdSoFar) { $partIdSoFar .= '_'; }                      if ($partIdSoFar) { $partIdSoFar .= '_'; }
Line 4469  sub OPEN                   { return 1; } Line 5300  sub OPEN                   { return 1; }
 sub PAST_DUE_NO_ANSWER     { return 2; }  sub PAST_DUE_NO_ANSWER     { return 2; }
 sub PAST_DUE_ANSWER_LATER  { return 3; }  sub PAST_DUE_ANSWER_LATER  { return 3; }
 sub ANSWER_OPEN            { return 4; }  sub ANSWER_OPEN            { return 4; }
 sub NOTHING_SET            { return 5; }   sub NOTHING_SET            { return 5; }
 sub NETWORK_FAILURE        { return 100; }  sub NETWORK_FAILURE        { return 100; }
   
 # getDateStatus gets the date status for a given problem part.   # getDateStatus gets the date status for a given problem part. 
Line 4555  Information not available due to network Line 5386  Information not available due to network
   
 Attempted, and not yet graded.  Attempted, and not yet graded.
   
   =item * B<CREDIT_ATTEMPTED>:
   
   Attempted, and credit received for attempt (survey and anonymous survey only).
   
 =back  =back
   
 =cut  =cut
Line 4566  sub CORRECT               { return 13; } Line 5401  sub CORRECT               { return 13; }
 sub CORRECT_BY_OVERRIDE   { return 14; }  sub CORRECT_BY_OVERRIDE   { return 14; }
 sub EXCUSED               { return 15; }  sub EXCUSED               { return 15; }
 sub ATTEMPTED             { return 16; }  sub ATTEMPTED             { return 16; }
   sub CREDIT_ATTEMPTED      { return 17; }
   
 sub getCompletionStatus {  sub getCompletionStatus {
     my $self = shift;      my $self = shift;
Line 4584  sub getCompletionStatus { Line 5420  sub getCompletionStatus {
     if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; }      if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; }
     if ($status eq 'excused') {return $self->EXCUSED; }      if ($status eq 'excused') {return $self->EXCUSED; }
     if ($status eq 'ungraded_attempted') {return $self->ATTEMPTED; }      if ($status eq 'ungraded_attempted') {return $self->ATTEMPTED; }
       if ($status eq 'credit_attempted') {
           if ($self->is_anonsurvey($part) || $self->is_survey($part)) {
               return $self->CREDIT_ATTEMPTED;
           } else {
               return $self->ATTEMPTED;
           }
       }
     return $self->NOT_ATTEMPTED;      return $self->NOT_ATTEMPTED;
 }  }
   
Line 4673  The item is open and not yet tried. Line 5516  The item is open and not yet tried.
   
 The problem has been attempted.  The problem has been attempted.
   
   =item * B<CREDIT_ATTEMPTED>:
   
   The problem has been attempted, and credit given for the attempt (survey and anonymous survey only).
   
 =item * B<ANSWER_SUBMITTED>:  =item * B<ANSWER_SUBMITTED>:
   
 An answer has been submitted, but the student should not see it.  An answer has been submitted, but the student should not see it.
Line 4681  An answer has been submitted, but the st Line 5528  An answer has been submitted, but the st
   
 =cut  =cut
   
 sub TRIES_LEFT       { return 20; }  sub TRIES_LEFT        { return 20; }
 sub ANSWER_SUBMITTED { return 21; }  sub ANSWER_SUBMITTED  { return 21; }
 sub PARTIALLY_CORRECT{ return 22; }  sub PARTIALLY_CORRECT { return 22; }
   
   sub RESERVED_LATER    { return 30; }
   sub RESERVED          { return 31; }
   sub RESERVED_LOCATION { return 32; }
   sub RESERVABLE        { return 33; }
   sub RESERVABLE_LATER  { return 34; }
   sub NOTRESERVABLE     { return 35; }
   sub NOT_IN_A_SLOT     { return 36; }
   sub NEEDS_CHECKIN     { return 37; }
   sub WAITING_FOR_GRADE { return 38; }
   sub UNKNOWN           { return 39; }
   
 sub status {  sub status {
     my $self = shift;      my $self = shift;
Line 4735  sub status { Line 5593  sub status {
         return ATTEMPTED;          return ATTEMPTED;
     }      }
   
       if ($completionStatus == CREDIT_ATTEMPTED) {
           return CREDIT_ATTEMPTED;
       }
   
     # If it's EXCUSED, then return that no matter what      # If it's EXCUSED, then return that no matter what
     if ($completionStatus == EXCUSED) {      if ($completionStatus == EXCUSED) {
         return EXCUSED;           return EXCUSED; 
Line 4773  sub status { Line 5635  sub status {
     }      }
   
     # Otherwise, it's untried and open      # Otherwise, it's untried and open
     return OPEN;       return OPEN;
   }
   
   sub check_for_slot {
       my $self = shift;
       my $part = shift;
       my $symb = $self->{SYMB};
       my ($use_slots,$available,$availablestudent) = $self->slot_control($part);
       if (($use_slots ne '') && ($use_slots !~ /^\s*no\s*$/i)) {
           my @slots = (split(/:/,$availablestudent),split(/:/,$available));
           my $cid=$env{'request.course.id'};
           my $cdom=$env{'course.'.$cid.'.domain'};
           my $cnum=$env{'course.'.$cid.'.num'};
           my $now = time;
           my $num_usable_slots = 0;
           my ($checkedin,$checkedinslot,%consumed_uniq,%slots);
           if (@slots > 0) {
               %slots=&Apache::lonnet::get('slots',[@slots],$cdom,$cnum);
               if (&Apache::lonnet::error(%slots)) {
                   return (UNKNOWN);
               }
               my @sorted_slots = &Apache::loncommon::sorted_slots(\@slots,\%slots,'starttime');
               foreach my $slot_name (@sorted_slots) {
                   next if (!defined($slots{$slot_name}) || !ref($slots{$slot_name}));
                   my $end = $slots{$slot_name}->{'endtime'};
                   my $start = $slots{$slot_name}->{'starttime'};
                   my $ip = $slots{$slot_name}->{'ip'};
                   if ($self->simpleStatus() == OPEN) {
                       if ($end > $now) {
                           if ($start > $now) {
                               return (RESERVED_LATER,$start,$slot_name);
                           } else {
                               if ($ip ne '') {
                                   if (!&Apache::loncommon::check_ip_acc($ip)) {
                                       return (RESERVED_LOCATION,$end,$slot_name);
                                   }
                               }
                               my @proctors;
                               if ($slots{$slot_name}->{'proctor'} ne '') {
                                   @proctors = split(',',$slots{$slot_name}->{'proctor'});
                               }
                               if (@proctors > 0) {
                                   ($checkedin,$checkedinslot) = $self->checkedin();
                                   unless ((grep(/^\Q$checkedin\E/,@proctors)) &&
                                           ($checkedinslot eq $slot_name)) {
                                       return (NEEDS_CHECKIN,undef,$slot_name); 
                                   }
                               }
                               return (RESERVED,$end,$slot_name);
                           }
                       }
                   } elsif ($end > $now) {
                       $num_usable_slots ++;
                   }
               }
               my ($is_correct,$wait_for_grade);
               if ($self->is_task()) {
                   my $taskstatus = $self->taskstatus();
                   $is_correct = (($taskstatus eq 'pass') || 
                                  ($self->solved() =~ /^correct_/));
                   unless ($taskstatus =~ /^(?:pass|fail)$/) {
                       $wait_for_grade = 1;
                   }
               } else {
                   unless ($self->completable()) {
                       $wait_for_grade = 1;
                   }
                   unless (($self->problemstatus($part) eq 'no') ||
                           ($self->problemstatus($part) eq 'no_feedback_ever')) {
                       $is_correct = ($self->solved($part) =~ /^correct_/);
                       $wait_for_grade = 0;
                   }
               }
               ($checkedin,$checkedinslot) = $self->checkedin();
               if ($checkedin) {
                   if (ref($slots{$checkedinslot}) eq 'HASH') {
                       $consumed_uniq{$checkedinslot} = $slots{$checkedinslot}{'uniqueperiod'};
                   }
                   if ($wait_for_grade) {
                       return (WAITING_FOR_GRADE);
                   } elsif ($is_correct) {
                       return (CORRECT); 
                   }
               }
               if ($num_usable_slots) {
                   return(NOT_IN_A_SLOT);
               }
           }
           my $reservable = &Apache::lonnet::get_reservable_slots($cnum,$cdom,$env{'user.name'},
                                                                  $env{'user.domain'});
           if (ref($reservable) eq 'HASH') {
               my ($map) = &Apache::lonnet::decode_symb($symb);
               if ((ref($reservable->{'now_order'}) eq 'ARRAY') && (ref($reservable->{'now'}) eq 'HASH')) {
                   foreach my $slot (reverse (@{$reservable->{'now_order'}})) {
                       my $canuse;
                       if ($reservable->{'now'}{$slot}{'symb'} eq '') {
                           $canuse = 1;
                       } else {
                           my %oksymbs;
                           my @slotsymbs = split(/\s*,\s*/,$reservable->{'now'}{$slot}{'symb'});
                           map { $oksymbs{$_} = 1; } @slotsymbs;
                           if ($oksymbs{$symb}) {
                               $canuse = 1;
                           } else {
                               foreach my $item (@slotsymbs) {
                                   if ($item =~ /\.(page|sequence)$/) {
                                       (undef,undef, my $sloturl) = &Apache::lonnet::decode_symb($item);
                                       if (($map ne '') && ($map eq $sloturl)) {
                                           $canuse = 1;
                                           last;
                                       }
                                   }
                               }
                           }
                       }
                       if ($canuse) {
                           if ($checkedin) {
                               if (ref($consumed_uniq{$checkedinslot}) eq 'ARRAY') {
                                   my ($uniqstart,$uniqend)=@{$consumed_uniq{$checkedinslot}};
                                   if ($reservable->{'now'}{$slot}{'uniqueperiod'} =~ /^(\d+),(\d+)$/) {
                                       my ($new_uniq_start,$new_uniq_end) = ($1,$2);
                                       next if (!
                                           ($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
                                           ($uniqstart > $new_uniq_end   &&  $uniqend > $new_uniq_end  ));
                                   }
                               }
                           }
                           return(RESERVABLE,$reservable->{'now'}{$slot}{'endreserve'});
                       }
                   }
               }
               if ((ref($reservable->{'future_order'}) eq 'ARRAY') && (ref($reservable->{'future'}) eq 'HASH')) {
                   foreach my $slot (@{$reservable->{'future_order'}}) {
                       my $canuse;
                       if ($reservable->{'future'}{$slot}{'symb'} eq '') {
                           $canuse = 1;
                       } elsif ($reservable->{'future'}{$slot}{'symb'} =~ /,/) {
                           my %oksymbs;
                           my @slotsymbs = split(/\s*,\s*/,$reservable->{'future'}{$slot}{'symb'});
                           map { $oksymbs{$_} = 1; } @slotsymbs;
                           if ($oksymbs{$symb}) {
                               $canuse = 1;
                           } else {
                               foreach my $item (@slotsymbs) {
                                   if ($item =~ /\.(page|sequence)$/) {
                                       (undef,undef, my $sloturl) = &Apache::lonnet::decode_symb($item);
                                       if (($map ne '') && ($map eq $sloturl)) {
                                           $canuse = 1;
                                           last;
                                       }
                                   }
                               }
                           }
                       } elsif ($reservable->{'future'}{$slot}{'symb'} eq $symb) {
                           $canuse = 1;
                       }
                       if ($canuse) {
                           if ($checkedin) {
                               if (ref($consumed_uniq{$checkedinslot}) eq 'ARRAY') {
                                   my ($uniqstart,$uniqend)=@{$consumed_uniq{$checkedinslot}};
                                   if ($reservable->{'future'}{$slot}{'uniqueperiod'} =~ /^(\d+),(\d+)$/) {
                                       my ($new_uniq_start,$new_uniq_end) = ($1,$2);
                                       next if (!
                                           ($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
                                           ($uniqstart > $new_uniq_end   &&  $uniqend > $new_uniq_end  ));
                                   }
                               }
                           }
                           return(RESERVABLE_LATER,$reservable->{'future'}{$slot}{'startreserve'});
                       }
                   }
               }
           }
           return(NOTRESERVABLE);
       }
       return;
 }  }
   
 sub CLOSED { return 23; }  sub CLOSED { return 23; }
Line 4825  my %compositeToSimple = Line 5862  my %compositeToSimple =
       INCORRECT()             => INCORRECT,        INCORRECT()             => INCORRECT,
       OPEN()                  => OPEN,        OPEN()                  => OPEN,
       ATTEMPTED()             => ATTEMPTED,        ATTEMPTED()             => ATTEMPTED,
         CREDIT_ATTEMPTED()      => CORRECT,
       ANSWER_SUBMITTED()      => ATTEMPTED        ANSWER_SUBMITTED()      => ATTEMPTED
      );       );
   
Line 4899  sub completable { Line 5937  sub completable {
         # and it is not "attempted" (manually graded problem), it is          # and it is not "attempted" (manually graded problem), it is
         # not "complete"          # not "complete"
  if ($self->getCompletionStatus($part) == ATTEMPTED() ||   if ($self->getCompletionStatus($part) == ATTEMPTED() ||
               $self->getCompletionStatus($part) == CREDIT_ATTEMPTED() ||
     $status == ANSWER_SUBMITTED() ) {      $status == ANSWER_SUBMITTED() ) {
     # did this part already, as well as we can      # did this part already, as well as we can
     next;      next;
Line 4914  sub completable { Line 5953  sub completable {
   
 =pod  =pod
   
   B<Answerable>
   
   The answerable method differs from the completable method in its handling of problem parts
   for which feedback on correctness is suppressed, but the student still has tries left, and
   the problem part is not past due, (i.e., the student could submit a different answer if
   he/she so chose). For that case completable will return 0, whereas answerable will return 1.
   
   =cut
   
   sub answerable {
       my $self = shift;
       if (!$self->is_problem()) { return 0; }
       my $partCount = $self->countParts();
       foreach my $part (@{$self->parts()}) {
           if ($part eq '0' && $partCount != 1) { next; }
           my $status = $self->status($part);
           if ($self->getCompletionStatus($part) == ATTEMPTED() ||
               $self->getCompletionStatus($part) == CREDIT_ATTEMPTED() ||
               $status == ANSWER_SUBMITTED() ) {
               if ($self->tries($part) < $self->maxtries($part) || !$self->maxtries($part)) {
                   return 1;
               }
           }
           if ($status == OPEN() || $status == TRIES_LEFT() || $status == NETWORK_FAILURE()) {
               return 1;
           }
       }
       # None of the parts were answerable, so neither is this problem.
       return 0;
   }
   
   =pod
   
 =head2 Resource/Nav Map Navigation  =head2 Resource/Nav Map Navigation
   
 =over 4  =over 4
Line 4949  sub getPrevious { Line 6021  sub getPrevious {
     my $self = shift;      my $self = shift;
     my @branches;      my @branches;
     my $from = $self->from();      my $from = $self->from();
     foreach my $branch ( split /,/, $from) {      foreach my $branch ( split(/,/, $from)) {
         my $choice = $self->{NAV_MAP}->getById($branch);          my $choice = $self->{NAV_MAP}->getById($branch);
         my $prev = $choice->comesfrom();          my $prev = $choice->comesfrom();
         $prev = $self->{NAV_MAP}->getById($prev);          $prev = $self->{NAV_MAP}->getById($prev);
Line 4961  sub getPrevious { Line 6033  sub getPrevious {
   
 sub browsePriv {  sub browsePriv {
     my $self = shift;      my $self = shift;
       my $noblockcheck = shift;
     if (defined($self->{BROWSE_PRIV})) {      if (defined($self->{BROWSE_PRIV})) {
         return $self->{BROWSE_PRIV};          return $self->{BROWSE_PRIV};
     }      }
   
     $self->{BROWSE_PRIV} = &Apache::lonnet::allowed('bre',$self->src(),      $self->{BROWSE_PRIV} = &Apache::lonnet::allowed('bre',$self->src(),
     $self->symb());      $self->{SYMB},undef,
                                                       undef,$noblockcheck);
 }  }
   
 =pod  =pod
Removed from v.1.427  
changed lines
  Added in v.1.530

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