[BACK]Return to lonnavmaps.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / interface

Diff for /loncom/interface/lonnavmaps.pm between versions 1.221 and 1.234

version 1.221, 2003/08/07 17:26:44 version 1.234, 2003/09/24 15:58:06
Line 46  use strict; Line 46  use strict;
 use Apache::Constants qw(:common :http);  use Apache::Constants qw(:common :http);
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonmenu();  use Apache::lonmenu();
   use Apache::lonlocal;
 use POSIX qw (floor strftime);  use POSIX qw (floor strftime);
 use Data::Dumper; # for debugging, not always used  use Data::Dumper; # for debugging, not always used
   
Line 61  my $resObj = "Apache::lonnavmaps::resour Line 62  my $resObj = "Apache::lonnavmaps::resour
 # Keep these mappings in sync with lonquickgrades, which uses the colors  # Keep these mappings in sync with lonquickgrades, which uses the colors
 # instead of the icons.  # instead of the icons.
 my %statusIconMap =   my %statusIconMap = 
     ( $resObj->NETWORK_FAILURE    => '',      (
       $resObj->NOTHING_SET        => '',       $resObj->CLOSED       => '',
       $resObj->CORRECT            => 'navmap.correct.gif',       $resObj->OPEN         => 'navmap.open.gif',
       $resObj->EXCUSED            => 'navmap.correct.gif',       $resObj->CORRECT      => 'navmap.correct.gif',
       $resObj->PAST_DUE_NO_ANSWER => 'navmap.wrong.gif',       $resObj->INCORRECT    => 'navmap.wrong.gif',
       $resObj->PAST_DUE_ANSWER_LATER => 'navmap.wrong.gif',       $resObj->ATTEMPTED    => 'navmap.ellipsis.gif',
       $resObj->ANSWER_OPEN        => 'navmap.wrong.gif',       $resObj->ERROR        => ''
       $resObj->OPEN_LATER         => '',       );
       $resObj->TRIES_LEFT         => 'navmap.open.gif',  
       $resObj->INCORRECT          => 'navmap.wrong.gif',  
       $resObj->OPEN               => 'navmap.open.gif',  
       $resObj->ATTEMPTED          => 'navmap.ellipsis.gif',  
       $resObj->ANSWER_SUBMITTED   => 'navmap.ellipsis.gif' );  
   
 my %iconAltTags =   my %iconAltTags = 
     ( 'navmap.correct.gif' => 'Correct',      ( 'navmap.correct.gif' => 'Correct',
Line 111  sub real_handler { Line 107  sub real_handler {
     # Handle header-only request      # Handle header-only request
     if ($r->header_only) {      if ($r->header_only) {
         if ($ENV{'browser.mathml'}) {          if ($ENV{'browser.mathml'}) {
             $r->content_type('text/xml');              &Apache::loncommon::content_type($r,'text/xml');
         } else {          } else {
             $r->content_type('text/html');              &Apache::loncommon::content_type($r,'text/html');
         }          }
         $r->send_http_header;          $r->send_http_header;
         return OK;          return OK;
Line 121  sub real_handler { Line 117  sub real_handler {
   
     # Send header, don't cache this page      # Send header, don't cache this page
     if ($ENV{'browser.mathml'}) {      if ($ENV{'browser.mathml'}) {
         $r->content_type('text/xml');          &Apache::loncommon::content_type($r,'text/xml');
     } else {      } else {
         $r->content_type('text/html');          &Apache::loncommon::content_type($r,'text/html');
     }      }
     &Apache::loncommon::no_cache($r);      &Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
Line 139  sub real_handler { Line 135  sub real_handler {
     }      }
   
     $r->print("<html><head>\n");      $r->print("<html><head>\n");
     $r->print("<title>Navigate Course Contents</title>");      $r->print("<title>".&mt('Navigate Course Contents')."</title>");
 # ------------------------------------------------------------ Get query string  # ------------------------------------------------------------ Get query string
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register']);      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register']);
           
Line 168  sub real_handler { Line 164  sub real_handler {
   
     # See if there's only one map in the top-level, if we don't      # See if there's only one map in the top-level, if we don't
     # already have a filter... if so, automatically display it      # already have a filter... if so, automatically display it
       # (older code; should use retrieveResources)
     if ($ENV{QUERY_STRING} !~ /filter/) {      if ($ENV{QUERY_STRING} !~ /filter/) {
         my $iterator = $navmap->getIterator(undef, undef, undef, 0);          my $iterator = $navmap->getIterator(undef, undef, undef, 0);
         my $depth = 1;          my $curRes;
         $iterator->next();  
         my $curRes = $iterator->next();  
         my $sequenceCount = 0;          my $sequenceCount = 0;
         my $sequenceId;          my $sequenceId;
         while ($depth > 0) {          while ($curRes = $iterator->next()) {
             if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }  
             if ($curRes == $iterator->END_MAP()) { $depth--; }  
               
             if (ref($curRes) && $curRes->is_sequence()) {              if (ref($curRes) && $curRes->is_sequence()) {
                 $sequenceCount++;                  $sequenceCount++;
                 $sequenceId = $curRes->map_pc();                  $sequenceId = $curRes->map_pc();
             }              }
               
             $curRes = $iterator->next();  
         }          }
                   
         if ($sequenceCount == 1) {          if ($sequenceCount == 1) {
Line 202  sub real_handler { Line 192  sub real_handler {
         $jumpToFirstHomework = 1;          $jumpToFirstHomework = 1;
         # Find the next homework problem that they can do.          # Find the next homework problem that they can do.
         my $iterator = $navmap->getIterator(undef, undef, undef, 1);          my $iterator = $navmap->getIterator(undef, undef, undef, 1);
         my $depth = 1;          my $curRes;
         $iterator->next();  
         my $curRes = $iterator->next();  
         my $foundDoableProblem = 0;          my $foundDoableProblem = 0;
         my $problemRes;          my $problemRes;
                   
         while ($depth > 0 && !$foundDoableProblem) {          while (($curRes = $iterator->next()) && !$foundDoableProblem) {
             if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }  
             if ($curRes == $iterator->END_MAP()) { $depth--; }  
   
             if (ref($curRes) && $curRes->is_problem()) {              if (ref($curRes) && $curRes->is_problem()) {
                 my $status = $curRes->status();                  my $status = $curRes->status();
                 if ($curRes->completable()) {                  if ($curRes->completable()) {
Line 229  sub real_handler { Line 214  sub real_handler {
                     $ENV{'form.postsymb'} = $curRes->symb();                      $ENV{'form.postsymb'} = $curRes->symb();
                 }                  }
             }              }
         } continue {  
             $curRes = $iterator->next();  
         }          }
   
         # If we found no problems, print a note to that effect.          # If we found no problems, print a note to that effect.
Line 239  sub real_handler { Line 222  sub real_handler {
         }          }
     } else {      } else {
         $r->print("<a href='navmaps?jumpToFirstHomework'>" .          $r->print("<a href='navmaps?jumpToFirstHomework'>" .
                   "Go To My First Homework Problem</a>&nbsp;&nbsp;&nbsp;&nbsp;");         &mt("Go To My First Homework Problem")."</a>&nbsp;&nbsp;&nbsp;&nbsp;");
     }      }
   
     my $suppressEmptySequences = 0;      my $suppressEmptySequences = 0;
Line 254  sub real_handler { Line 237  sub real_handler {
         $filterFunc = sub { my $res = shift;           $filterFunc = sub { my $res = shift; 
                             return $res->completable() || $res->is_map();                              return $res->completable() || $res->is_map();
                         };                          };
         $r->print("<p><font size='+2'>Uncompleted Homework</font></p>");          $r->print("<p><font size='+2'>".&mt("Uncompleted Homework")."</font></p>");
         $ENV{'form.filter'} = '';          $ENV{'form.filter'} = '';
         $ENV{'form.condition'} = 1;          $ENV{'form.condition'} = 1;
  $resource_no_folder_link = 1;   $resource_no_folder_link = 1;
     } else {      } else {
         $r->print("<a href='navmaps?showOnlyHomework'>" .          $r->print("<a href='navmaps?showOnlyHomework'>" .
                   "Show Only Uncompleted Homework</a>&nbsp;&nbsp;&nbsp;&nbsp;");         &mt("Show Only Uncompleted Homework")."</a>&nbsp;&nbsp;&nbsp;&nbsp;");
     }      }
   
     # renderer call      # renderer call
Line 279  sub real_handler { Line 262  sub real_handler {
     # user knows there was no error.      # user knows there was no error.
     if ($renderArgs->{'counter'} == 0) {      if ($renderArgs->{'counter'} == 0) {
         if ($showOnlyHomework) {          if ($showOnlyHomework) {
             $r->print("<p><font size='+1'>All homework is currently completed.</font></p>");              $r->print("<p><font size='+1'>".&mt("All homework is currently completed").".</font></p>");
         } else { # both jumpToFirstHomework and normal use the same: course must be empty          } else { # both jumpToFirstHomework and normal use the same: course must be empty
             $r->print("<p><font size='+1'>This course is empty.</font></p>");              $r->print("<p><font size='+1'>This course is empty.</font></p>");
         }          }
Line 349  sub getDescription { Line 332  sub getDescription {
     my $status = $res->status($part);      my $status = $res->status($part);
   
     if ($status == $res->NETWORK_FAILURE) {       if ($status == $res->NETWORK_FAILURE) { 
         return "Having technical difficulties; please check status later";           return &mt("Having technical difficulties; please check status later"); 
     }      }
     if ($status == $res->NOTHING_SET) {      if ($status == $res->NOTHING_SET) {
         return "Not currently assigned.";          return &mt("Not currently assigned.");
     }      }
     if ($status == $res->OPEN_LATER) {      if ($status == $res->OPEN_LATER) {
         return "Open " . timeToHumanString($res->opendate($part));          return "Open " . timeToHumanString($res->opendate($part));
     }      }
     if ($status == $res->OPEN) {      if ($status == $res->OPEN) {
         if ($res->duedate($part)) {          if ($res->duedate($part)) {
             return "Due " . timeToHumanString($res->duedate($part));              return &mt("Due")."  " .timeToHumanString($res->duedate($part));
         } else {          } else {
             return "Open, no due date";              return &mt("Open, no due date");
         }          }
     }      }
     if ($status == $res->PAST_DUE_ANSWER_LATER) {      if ($status == $res->PAST_DUE_ANSWER_LATER) {
         return "Answer open " . timeToHumanString($res->answerdate($part));          return &mt("Answer open")." " . timeToHumanString($res->answerdate($part));
     }      }
     if ($status == $res->PAST_DUE_NO_ANSWER) {      if ($status == $res->PAST_DUE_NO_ANSWER) {
         return "Was due " . timeToHumanString($res->duedate($part));          return &mt("Was due")." " . timeToHumanString($res->duedate($part));
     }      }
     if ($status == $res->ANSWER_OPEN) {      if ($status == $res->ANSWER_OPEN) {
         return "Answer available";          return &mt("Answer available");
     }      }
     if ($status == $res->EXCUSED) {      if ($status == $res->EXCUSED) {
         return "Excused by instructor";          return &mt("Excused by instructor");
     }      }
     if ($status == $res->ATTEMPTED) {      if ($status == $res->ATTEMPTED) {
         return "Answer submitted, not yet graded.";          return &mt("Answer submitted, not yet graded");
     }      }
     if ($status == $res->TRIES_LEFT) {      if ($status == $res->TRIES_LEFT) {
         my $tries = $res->tries($part);          my $tries = $res->tries($part);
Line 390  sub getDescription { Line 373  sub getDescription {
             }              }
         }          }
         if ($res->duedate()) {          if ($res->duedate()) {
             return "Due " . timeToHumanString($res->duedate($part)) .              return &mt("Due")." " . timeToHumanString($res->duedate($part)) .
                 " $triesString";                  " $triesString";
         } else {          } else {
             return "No due date $triesString";              return &mt("No due date")." $triesString";
         }          }
     }      }
     if ($status == $res->ANSWER_SUBMITTED) {      if ($status == $res->ANSWER_SUBMITTED) {
         return 'Answer submitted';          return &mt('Answer submitted');
     }      }
 }  }
   
Line 447  sub timeToHumanString { Line 430  sub timeToHumanString {
     my ($time) = @_;      my ($time) = @_;
     # zero, '0' and blank are bad times      # zero, '0' and blank are bad times
     if (!$time) {      if (!$time) {
         return 'never';          return &mt('never');
     }      }
       unless (&Apache::lonlocal::current_language()=~/^en/) {
    return localtime($time);
       } 
     my $now = time();      my $now = time();
   
     my @time = localtime($time);      my @time = localtime($time);
Line 673  can't close or open folders when this is Line 658  can't close or open folders when this is
   
 =back  =back
   
 =item B<Apache::lonnavmaps::communication_status>:  =item * B<Apache::lonnavmaps::communication_status>:
   
 Whether there is discussion on the resource, email for the user, or  Whether there is discussion on the resource, email for the user, or
 (lumped in here) perl errors in the execution of the problem. This is  (lumped in here) perl errors in the execution of the problem. This is
 the second column in the main nav map.  the second column in the main nav map.
   
 =item B<Apache::lonnavmaps::quick_status>:  =item * B<Apache::lonnavmaps::quick_status>:
   
 An icon for the status of a problem, with five possible states:  An icon for the status of a problem, with five possible states:
 Correct, incorrect, open, awaiting grading (for a problem where the  Correct, incorrect, open, awaiting grading (for a problem where the
Line 687  computer's grade is suppressed, or the c Line 672  computer's grade is suppressed, or the c
 essay problem), or none (not open yet, not a problem). The  essay problem), or none (not open yet, not a problem). The
 third column of the standard navmap.  third column of the standard navmap.
   
 =item B<Apache::lonnavmaps::long_status>:  =item * B<Apache::lonnavmaps::long_status>:
   
 A text readout of the details of the current status of the problem,  A text readout of the details of the current status of the problem,
 such as "Due in 22 hours". The fourth column of the standard navmap.  such as "Due in 22 hours". The fourth column of the standard navmap.
   
   =item * B<Apache::lonnavmaps::part_status_summary>:
   
   A text readout summarizing the status of the problem. If it is a
   single part problem, will display "Correct", "Incorrect", 
   "Not yet open", "Open", "Attempted", or "Error". If there are
   multiple parts, this will output a string that in HTML will show a
   status of how many parts are in each status, in color coding, trying
   to match the colors of the icons within reason.
   
   Note this only makes sense if you are I<not> showing parts. If 
   C<showParts> is true (see below), this column will not output
   anything. 
   
 =back  =back
   
 If you add any others please be sure to document them here.  If you add any others please be sure to document them here.
Line 859  sub resource { return 0; } Line 857  sub resource { return 0; }
 sub communication_status { return 1; }  sub communication_status { return 1; }
 sub quick_status { return 2; }  sub quick_status { return 2; }
 sub long_status { return 3; }  sub long_status { return 3; }
   sub part_status_summary { return 4; }
 # Data for render_resource  
   
 sub render_resource {  sub render_resource {
     my ($resource, $part, $params) = @_;      my ($resource, $part, $params) = @_;
Line 1049  sub render_quick_status { Line 1046  sub render_quick_status {
   
     if ($resource->is_problem() &&      if ($resource->is_problem() &&
         !$firstDisplayed) {          !$firstDisplayed) {
         my $icon = $statusIconMap{$resource->status($part)};  
           my $icon = $statusIconMap{$resource->simpleStatus($part)};
         my $alt = $iconAltTags{$icon};          my $alt = $iconAltTags{$icon};
         if ($icon) {          if ($icon) {
             $result .= "<td width='30' valign='center' width='50' align='right'>$linkopen<img width='25' height='25' src='/adm/lonIcons/$icon' border='0' alt='$alt' />$linkclose</td>\n";              $result .= "<td width='30' valign='center' width='50' align='right'>$linkopen<img width='25' height='25' src='/adm/lonIcons/$icon' border='0' alt='$alt' />$linkclose</td>\n";
Line 1098  sub render_long_status { Line 1096  sub render_long_status {
     return $result;      return $result;
 }  }
   
   # Colors obtained by taking the icons, matching the colors, and
   # possibly reducing the Value (HSV) of the color, if it's too bright
   # for text, generally by one third or so.
   my %statusColors = 
       (
        $resObj->CLOSED => '#000000',
        $resObj->OPEN   => '#998b13',
        $resObj->CORRECT => '#26933f',
        $resObj->INCORRECT => '#c48207',
        $resObj->ATTEMPTED => '#a87510',
        $resObj->ERROR => '#000000'
        );
   my %statusStrings = 
       (
        $resObj->CLOSED => 'Not yet open',
        $resObj->OPEN   => 'Open',
        $resObj->CORRECT => 'Correct',
        $resObj->INCORRECT => 'Incorrect',
        $resObj->ATTEMPTED => 'Attempted',
        $resObj->ERROR => 'Network Error'
        );
   my @statuses = ($resObj->CORRECT, $resObj->ATTEMPTED, $resObj->INCORRECT, $resObj->OPEN, $resObj->CLOSED, $resObj->ERROR);
   
   use Data::Dumper;
   sub render_parts_summary_status {
       my ($resource, $part, $params) = @_;
       if (!$resource->is_problem()) { return '<td></td>'; }
       if ($params->{showParts}) { 
    return '<td></td>';
       }
   
       my $td = "<td align='right'>\n";
       my $endtd = "</td>\n";
   
       # If there is a single part, just show the simple status
       if ($resource->singlepart()) {
    my $status = $resource->simpleStatus('0');
    return $td . "<font color='" . $statusColors{$status} . "'>"
       . $statusStrings{$status} . "</font>" . $endtd;
       }
   
       # Now we can be sure the $part doesn't really matter.
       my $statusCount = $resource->simpleStatusCount();
       my @counts;
       foreach my $status(@statuses) {
    # decouple display order from the simpleStatusCount order
    my $slot = Apache::lonnavmaps::resource::statusToSlot($status);
    if ($statusCount->[$slot]) {
       push @counts, "<font color='" . $statusColors{$status} .
    "'>" . $statusCount->[$slot] . ' '
    . $statusStrings{$status} . "</font>";
    }
       }
   
       return $td . $resource->countParts() . ' parts: ' . join (', ', @counts) . $endtd;
   }
   
 my @preparedColumns = (\&render_resource, \&render_communication_status,  my @preparedColumns = (\&render_resource, \&render_communication_status,
                        \&render_quick_status, \&render_long_status);                         \&render_quick_status, \&render_long_status,
          \&render_parts_summary_status);
   
 sub setDefault {  sub setDefault {
     my ($val, $default) = @_;      my ($val, $default) = @_;
Line 1185  sub render { Line 1241  sub render {
   
         # Step three: Ensure the folders are open          # Step three: Ensure the folders are open
         my $mapIterator = $navmap->getIterator(undef, undef, undef, 1);          my $mapIterator = $navmap->getIterator(undef, undef, undef, 1);
         my $depth = 1;          my $curRes;
         $mapIterator->next(); # discard the first BEGIN_MAP  
         my $curRes = $mapIterator->next();  
         my $found = 0;          my $found = 0;
                   
         # We only need to do this if we need to open the maps to show the          # We only need to do this if we need to open the maps to show the
         # current position. This will change the counter so we can't count          # current position. This will change the counter so we can't count
         # for the jump marker with this loop.          # for the jump marker with this loop.
         while ($depth > 0 && !$found) {          while (($curRes = $mapIterator->next()) && !$found) {
             if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; }  
             if ($curRes == $mapIterator->END_MAP()) { $depth--; }  
               
             if (ref($curRes) && $curRes->symb() eq $here) {              if (ref($curRes) && $curRes->symb() eq $here) {
                 my $mapStack = $mapIterator->getStack();                  my $mapStack = $mapIterator->getStack();
                                   
Line 1210  sub render { Line 1261  sub render {
                 }                  }
                 $found = 1;                  $found = 1;
             }              }
               
             $curRes = $mapIterator->next();  
         }                      }            
     }              }        
   
Line 1249  sub render { Line 1298  sub render {
     # Note this does not take filtering or hidden into account... need      # Note this does not take filtering or hidden into account... need
     # to be fixed?      # to be fixed?
     my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0);      my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0);
     my $depth = 1;      my $curRes;
     $mapIterator->next();  
     my $curRes = $mapIterator->next();  
     my $foundJump = 0;      my $foundJump = 0;
     my $counter = 0;      my $counter = 0;
           
     while ($depth > 0 && !$foundJump) {      while (($curRes = $mapIterator->next()) && !$foundJump) {
         if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; }  
         if ($curRes == $mapIterator->END_MAP()) { $depth--; }  
         if (ref($curRes)) { $counter++; }          if (ref($curRes)) { $counter++; }
                   
         if (ref($curRes) && $jump eq $curRes->symb()) {          if (ref($curRes) && $jump eq $curRes->symb()) {
Line 1268  sub render { Line 1313  sub render {
             $args->{'currentJumpIndex'} = $counter;              $args->{'currentJumpIndex'} = $counter;
             $foundJump = 1;              $foundJump = 1;
         }          }
           
         $curRes = $mapIterator->next();  
     }      }
   
     my $showParts = setDefault($args->{'showParts'}, 1);      my $showParts = setDefault($args->{'showParts'}, 1);
Line 1288  sub render { Line 1331  sub render {
         $result.='<tr><td align="right" valign="bottom">Key:&nbsp;&nbsp;</td>';          $result.='<tr><td align="right" valign="bottom">Key:&nbsp;&nbsp;</td>';
         if ($navmap->{LAST_CHECK}) {          if ($navmap->{LAST_CHECK}) {
             $result .=               $result .= 
                 '<img src="/adm/lonMisc/chat.gif"> New discussion since '.                  '<img src="/adm/lonMisc/chat.gif"> '.&mt('New discussion since').' '.
                 strftime("%A, %b %e at %I:%M %P", localtime($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="/adm/lonMisc/feedback.gif"> New message (click to open)<p>'.                  '<img src="/adm/lonMisc/feedback.gif"> '.&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="/adm/lonMisc/chat.gif"> Discussions</td><td align="center" valign="bottom">'.                  '<img src="/adm/lonMisc/chat.gif"> '.&mt('Discussions').'</td><td align="center" valign="bottom">'.
                 '&nbsp;&nbsp;<img src="/adm/lonMisc/feedback.gif"> New message (click to open)'.                  '&nbsp;&nbsp;<img src="/adm/lonMisc/feedback.gif"> '.&mt('New message (click to open)').
                 '</td>';                   '</td>'; 
         }          }
   
Line 1307  sub render { Line 1350  sub render {
         if ($condition) {          if ($condition) {
             $result.="<a href=\"navmaps?condition=0&filter=&$queryString" .              $result.="<a href=\"navmaps?condition=0&filter=&$queryString" .
                 "&here=" . Apache::lonnet::escape($here) .                  "&here=" . Apache::lonnet::escape($here) .
                 "\">Close All Folders</a>";                  "\">".&mt('Close All Folders')."</a>";
         } else {          } else {
             $result.="<a href=\"navmaps?condition=1&filter=&$queryString" .              $result.="<a href=\"navmaps?condition=1&filter=&$queryString" .
                 "&here=" . Apache::lonnet::escape($here) .                   "&here=" . Apache::lonnet::escape($here) . 
                 "\">Open All Folders</a>";                  "\">".&mt('Open All Folders')."</a>";
         }          }
         $result .= "<br /><br />\n";          $result .= "<br /><br />\n";
     }          }    
Line 1347  sub render { Line 1390  sub render {
                                                          $it->{FIRST_RESOURCE},                                                           $it->{FIRST_RESOURCE},
                                                          $it->{FINISH_RESOURCE},                                                           $it->{FINISH_RESOURCE},
                                                          {}, undef, 1);                                                           {}, undef, 1);
         $depth = 0;          my $depth = 0;
         $dfsit->next();          $dfsit->next();
         my $curRes = $dfsit->next();          my $curRes = $dfsit->next();
         while ($depth > -1) {          while ($depth > -1) {
Line 1379  sub render { Line 1422  sub render {
   
     my $displayedJumpMarker = 0;      my $displayedJumpMarker = 0;
     # Set up iteration.      # Set up iteration.
     $depth = 1;  
     $it->next(); # discard initial BEGIN_MAP  
     $curRes = $it->next();  
     my $now = time();      my $now = time();
     my $in24Hours = $now + 24 * 60 * 60;      my $in24Hours = $now + 24 * 60 * 60;
     my $rownum = 0;      my $rownum = 0;
Line 1389  sub render { Line 1429  sub render {
     # export "here" marker information      # export "here" marker information
     $args->{'here'} = $here;      $args->{'here'} = $here;
   
     while ($depth > 0) {      $args->{'indentLevel'} = -1; # first BEGIN_MAP takes this to 0
         if ($curRes == $it->BEGIN_MAP()) { $depth++; }      while ($curRes = $it->next()) {
         if ($curRes == $it->END_MAP()) { $depth--; }  
   
         # Maintain indentation level.          # Maintain indentation level.
         if ($curRes == $it->BEGIN_MAP() ||          if ($curRes == $it->BEGIN_MAP() ||
             $curRes == $it->BEGIN_BRANCH() ) {              $curRes == $it->BEGIN_BRANCH() ) {
Line 1545  sub render { Line 1583  sub render {
             $r->rflush();              $r->rflush();
         }          }
     } continue {      } continue {
         $curRes = $it->next();  
   
  if ($r) {   if ($r) {
     # If we have the connection, make sure the user is still connected      # If we have the connection, make sure the user is still connected
     my $c = $r->connection;      my $c = $r->connection;
Line 1942  sub getById { Line 1978  sub getById {
 sub getBySymb {  sub getBySymb {
     my $self = shift;      my $self = shift;
     my $symb = shift;      my $symb = shift;
     my ($mapUrl, $id, $filename) = split (/___/, $symb);      my ($mapUrl, $id, $filename) = &Apache::lonnet::decode_symb($symb);
     my $map = $self->getResourceByUrl($mapUrl);      my $map = $self->getResourceByUrl($mapUrl);
     return $self->getById($map->map_pc() . '.' . $id);      return $self->getById($map->map_pc() . '.' . $id);
 }  }
Line 2018  sub parmval_real { Line 2054  sub parmval_real {
     unless ($symb) { return ''; }      unless ($symb) { return ''; }
     my $result='';      my $result='';
   
     my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);      my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);
   
 # ----------------------------------------------------- Cascading lookup scheme  # ----------------------------------------------------- Cascading lookup scheme
     my $rwhat=$what;      my $rwhat=$what;
Line 2184  sub retrieveResources { Line 2220  sub retrieveResources {
     my @resources = ();      my @resources = ();
   
     # Run down the iterator and collect the resources.      # Run down the iterator and collect the resources.
     my $depth = 1;      my $curRes;
     $it->next();  
     my $curRes = $it->next();      while ($curRes = $it->next()) {
   
     while ($depth > 0) {  
         if ($curRes == $it->BEGIN_MAP()) {  
             $depth++;  
         }  
         if ($curRes == $it->END_MAP()) {  
             $depth--;  
         }  
           
         if (ref($curRes)) {          if (ref($curRes)) {
             if (!&$filterFunc($curRes)) {              if (!&$filterFunc($curRes)) {
                 next;                  next;
Line 2208  sub retrieveResources { Line 2235  sub retrieveResources {
             }              }
         }          }
   
     } continue {  
         $curRes = $it->next();  
     }      }
   
     return @resources;      return @resources;
Line 2285  new branch. The possible tokens are: Line 2310  new branch. The possible tokens are:
   
 =over 4  =over 4
   
   =item * B<END_ITERATOR>:
   
   The iterator has returned all that it's going to. Further calls to the
   iterator will just produce more of these. This is a "false" value, and
   is the only false value the iterator which will be returned, so it can
   be used as a loop sentinel.
   
 =item * B<BEGIN_MAP>:  =item * B<BEGIN_MAP>:
   
 A new map is being recursed into. This is returned I<after> the map  A new map is being recursed into. This is returned I<after> the map
Line 2315  consisting entirely of empty resources e Line 2347  consisting entirely of empty resources e
 ending resource, will cause a lot of BRANCH_STARTs and BRANCH_ENDs,  ending resource, will cause a lot of BRANCH_STARTs and BRANCH_ENDs,
 but only one resource will be returned.  but only one resource will be returned.
   
   =head2 Normal Usage
   
   Normal usage of the iterator object is to do the following:
   
    my $it = $navmap->getIterator([your params here]);
    my $curRes;
    while ($curRes = $it->next()) {
      [your logic here]
    }
   
   Note that inside of the loop, it's frequently useful to check if
   "$curRes" is a reference or not with the reference function; only
   resource objects will be references, and any non-references will 
   be the tokens described above.
   
   Also note there is some old code floating around that trys to track
   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 then
   this. They should be migrated to this new style.
   
 =back  =back
   
 =cut  =cut
   
 # Here are the tokens for the iterator:  # Here are the tokens for the iterator:
   
   sub END_ITERATOR { return 0; }
 sub BEGIN_MAP { return 1; }    # begining of a new map  sub BEGIN_MAP { return 1; }    # begining of a new map
 sub END_MAP { return 2; }      # end of the map  sub END_MAP { return 2; }      # end of the map
 sub BEGIN_BRANCH { return 3; } # beginning of a branch  sub BEGIN_BRANCH { return 3; } # beginning of a branch
Line 2406  sub new { Line 2459  sub new {
           
         # prime the recursion          # prime the recursion
         $self->{$firstResourceName}->{DATA}->{$valName} = 0;          $self->{$firstResourceName}->{DATA}->{$valName} = 0;
         my $depth = 0;   $iterator->next();
         $iterator->next();  
         my $curRes = $iterator->next();          my $curRes = $iterator->next();
         while ($depth > -1) {   my $depth = 1;
             if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }          while ($depth > 0) {
             if ($curRes == $iterator->END_MAP()) { $depth--; }      if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }
               if ($curRes == $iterator->END_MAP()) { $depth--; }
   
             if (ref($curRes)) {              if (ref($curRes)) {
                 # If there's only one resource, this will save it                  # If there's only one resource, this will save it
                 # we have to filter empty resources from consideration here,                  # we have to filter empty resources from consideration here,
Line 2446  sub new { Line 2499  sub new {
                 $curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;                  $curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;
                 if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}                  if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}
             }              }
         } continue {  
             $curRes = $iterator->next();      $curRes = $iterator->next();
         }          }
     }      }
   
Line 2468  sub new { Line 2521  sub new {
     $self->{MAX_DEPTH} = $maxDepth;      $self->{MAX_DEPTH} = $maxDepth;
     $self->{STACK} = [];      $self->{STACK} = [];
     $self->{RECURSIVE_ITERATOR_FLAG} = 0;      $self->{RECURSIVE_ITERATOR_FLAG} = 0;
       $self->{FINISHED} = 0; # When true, the iterator has finished
   
     for (my $i = 0; $i <= $self->{MAX_DEPTH}; $i++) {      for (my $i = 0; $i <= $self->{MAX_DEPTH}; $i++) {
         push @{$self->{STACK}}, [];          push @{$self->{STACK}}, [];
Line 2485  sub new { Line 2539  sub new {
 sub next {  sub next {
     my $self = shift;      my $self = shift;
   
       if ($self->{FINISHED}) {
    return END_ITERATOR();
       }
   
     # If we want to return the top-level map object, and haven't yet,      # If we want to return the top-level map object, and haven't yet,
     # do so.      # do so.
     if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0}) {      if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0}) {
Line 2544  sub next { Line 2602  sub next {
             $self->{CURRENT_DEPTH}--;              $self->{CURRENT_DEPTH}--;
             return END_BRANCH();              return END_BRANCH();
         } else {          } else {
       $self->{FINISHED} = 1;
             return END_MAP();              return END_MAP();
         }          }
     }      }
Line 3040  sub symb { Line 3099  sub symb {
     my $self=shift;      my $self=shift;
     (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());
     return &Apache::lonnet::declutter(      my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first)) 
          $self->navHash('map_id_'.$first))   
         . '___' . $second . '___' . $symbSrc;          . '___' . $second . '___' . $symbSrc;
       return &Apache::lonnet::symbclean($symb);
 }  }
 sub title {   sub title { 
     my $self=shift;       my $self=shift; 
Line 3478  sub multipart { Line 3537  sub multipart {
     return $self->countParts() > 1;      return $self->countParts() > 1;
 }  }
   
   sub singlepart {
       my $self = shift;
       return $self->countParts() == 1;
   }
   
 sub responseType {  sub responseType {
     my $self = shift;      my $self = shift;
     my $part = shift;      my $part = shift;
   
     $self->extractParts();      $self->extractParts();
     return $self->{RESPONSE_TYPES}->{$part};      return @{$self->{RESPONSE_TYPES}->{$part}};
 }  }
   
 sub responseIds {  sub responseIds {
Line 3491  sub responseIds { Line 3555  sub responseIds {
     my $part = shift;      my $part = shift;
   
     $self->extractParts();      $self->extractParts();
     return $self->{RESPONSE_IDS}->{$part};      return @{$self->{RESPONSE_IDS}->{$part}};
 }  }
   
 # Private function: Extracts the parts information, both part names and  # Private function: Extracts the parts information, both part names and
Line 3565  sub extractParts { Line 3629  sub extractParts {
                         my @otherChunks = @partChunks[$i+1..$#partChunks];                          my @otherChunks = @partChunks[$i+1..$#partChunks];
                         my $responseId = join('_', @otherChunks);                          my $responseId = join('_', @otherChunks);
                         push @{$responseIdHash{$partIdSoFar}}, $responseId;                          push @{$responseIdHash{$partIdSoFar}}, $responseId;
                         $responseTypeHash{$partIdSoFar} = $responseType;                          push @{$responseTypeHash{$partIdSoFar}}, $responseType;
                         last;  
                     }                      }
                 }                  }
             }              }
Line 3881  sub status { Line 3944  sub status {
     # dimension and 5 entries on the other, which we want to colorize,      # dimension and 5 entries on the other, which we want to colorize,
     # plus network failure and "no date data at all".      # plus network failure and "no date data at all".
   
       #if ($self->{RESOURCE_ERROR}) { return NETWORK_FAILURE; }
     if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }      if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }
   
     my $suppressFeedback = lc($self->parmval("problemstatus", $part)) eq 'no';      my $suppressFeedback = lc($self->parmval("problemstatus", $part)) eq 'no';
Line 3927  sub status { Line 3991  sub status {
     if ($completionStatus == INCORRECT || $completionStatus == INCORRECT_BY_OVERRIDE) {      if ($completionStatus == INCORRECT || $completionStatus == INCORRECT_BY_OVERRIDE) {
         # and there are TRIES LEFT:          # and there are TRIES LEFT:
         if ($self->tries($part) < $self->maxtries($part) || !$self->maxtries($part)) {          if ($self->tries($part) < $self->maxtries($part) || !$self->maxtries($part)) {
             return TRIES_LEFT;              return $suppressFeedback ? ANSWER_SUBMITTED : TRIES_LEFT;
         }          }
         return $suppressFeedback ? ANSWER_SUBMITTED : INCORRECT; # otherwise, return orange; student can't fix this          return $suppressFeedback ? ANSWER_SUBMITTED : INCORRECT; # otherwise, return orange; student can't fix this
     }      }
Line 3936  sub status { Line 4000  sub status {
     return OPEN;       return OPEN; 
 }  }
   
   sub CLOSED { return 23; }
   sub ERROR { return 24; }
   
   =pod
   
   B<Simple Status>
   
   Convenience method B<simpleStatus> provides a "simple status" for the resource.
   "Simple status" corresponds to "which icon is shown on the
   Navmaps". There are six "simple" statuses:
   
   =over 4
   
   =item * B<CLOSED>: The problem is currently closed. (No icon shown.)
   
   =item * B<OPEN>: The problem is open and unattempted.
   
   =item * B<CORRECT>: The problem is correct for any reason.
   
   =item * B<INCORRECT>: The problem is incorrect and can still be
   completed successfully.
   
   =item * B<ATTEMPTED>: The problem has been attempted, but the student
   does not know if they are correct. (The ellipsis icon.)
   
   =item * B<ERROR>: There is an error retrieving information about this
   problem.
   
   =back
   
   =cut
   
   # This hash maps the composite status to this simple status, and
   # can be used directly, if you like
   my %compositeToSimple = 
       (
         NETWORK_FAILURE()       => ERROR,
         NOTHING_SET()           => CLOSED,
         CORRECT()               => CORRECT,
         EXCUSED()               => CORRECT,
         PAST_DUE_NO_ANSWER()    => INCORRECT,
         PAST_DUE_ANSWER_LATER() => INCORRECT,
         ANSWER_OPEN()           => INCORRECT,
         OPEN_LATER()            => CLOSED,
         TRIES_LEFT()            => OPEN,
         INCORRECT()             => INCORRECT,
         OPEN()                  => OPEN,
         ATTEMPTED()             => ATTEMPTED,
         ANSWER_SUBMITTED()      => ATTEMPTED
        );
   
   sub simpleStatus {
       my $self = shift;
       my $part = shift;
       my $status = $self->status($part);
       return $compositeToSimple{$status};
   }
   
   =pod
   
   B<simpleStatusCount> will return an array reference containing, in
   this order, the number of OPEN, CLOSED, CORRECT, INCORRECT, ATTEMPTED,
   and ERROR parts the given problem has.
   
   =cut
       
   # This maps the status to the slot we want to increment
   my %statusToSlotMap = 
       (
        OPEN()      => 0,
        CLOSED()    => 1,
        CORRECT()   => 2,
        INCORRECT() => 3,
        ATTEMPTED() => 4,
        ERROR()     => 5
        );
   
   sub statusToSlot { return $statusToSlotMap{shift()}; }
   
   sub simpleStatusCount {
       my $self = shift;
   
       my @counts = (0, 0, 0, 0, 0, 0, 0);
       foreach my $part (@{$self->parts()}) {
    $counts[$statusToSlotMap{$self->simpleStatus($part)}]++;
       }
   
       return \@counts;
   }
   
 =pod  =pod
   
 B<Completable>  B<Completable>
Removed from v.1.221  
changed lines
  Added in v.1.234

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