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

Diff for /loncom/interface/lonhelper.pm between versions 1.125 and 1.137

version 1.125, 2005/10/17 20:21:31 version 1.137, 2006/04/24 23:05:35
Line 573  sub display { Line 573  sub display {
     }      }
   
     # Phase 4: Display.      # Phase 4: Display.
     my $html=&Apache::lonxml::xmlbegin();  
     my $stateTitle=&mt($state->title());      my $stateTitle=&mt($state->title());
     my $helperTitle = &mt($self->{TITLE});      my $browser_searcher_js = 
     my $bodytag = &Apache::loncommon::bodytag($helperTitle,'','');   '<script type="text/javascript">'."\n".
    &Apache::loncommon::browser_and_searcher_javascript().
    "\n".'</script>';
   
       $result .= &Apache::loncommon::start_page($self->{TITLE},
         $browser_searcher_js);
       
     my $previous = HTML::Entities::encode(&mt("<- Previous"), '<>&"');      my $previous = HTML::Entities::encode(&mt("<- Previous"), '<>&"');
     my $next = HTML::Entities::encode(&mt("Next ->"), '<>&"');      my $next = HTML::Entities::encode(&mt("Next ->"), '<>&"');
     # FIXME: This should be parameterized, not concatenated - Jeremy      # FIXME: This should be parameterized, not concatenated - Jeremy
     my $loncapaHelper = &mt("LON-CAPA Helper:");  
   
     $result .= <<HEADER;  
 $html  
     <head>  
         <title>$loncapaHelper: $helperTitle</title>  
     </head>  
     $bodytag  
 HEADER  
     if (!$state->overrideForm()) { $result.="<form name='helpform' method='POST'>"; }      if (!$state->overrideForm()) { $result.="<form name='helpform' method='POST'>"; }
     $result .= <<HEADER;      $result .= <<HEADER;
         <table border="0" width='100%'><tr><td>          <table border="0" width='100%'><tr><td>
Line 651  HEADER Line 649  HEADER
             </tr>              </tr>
           </table>            </table>
         </form>          </form>
     </body>  
 </html>  
 FOOTER  FOOTER
   
       $result .= &Apache::loncommon::end_page();
     # Handle writing out the vars to the file      # Handle writing out the vars to the file
     my $file = Apache::File->new('>'.$self->{FILENAME});      my $file = Apache::File->new('>'.$self->{FILENAME});
     print $file $self->_varsInFile();      print $file $self->_varsInFile();
Line 1072  will be the state transistioned to if th Line 1069  will be the state transistioned to if th
 the choice is not multichoice. This will override the nextstate  the choice is not multichoice. This will override the nextstate
 passed to the parent C<choices> tag.  passed to the parent C<choices> tag.
   
   <choice> may optionally contain a 'relatedvalue' attribute, which
   if present will cause a text entry to appear to the right of the
   selection.  The value of the relatedvalue attribute is a variable
   into which the text entry will be stored e.g.:
   <choice computer='numberprovided" relatedvalue="num">Type the number in:</choice>
   
   <choice> may contain a relatededefault atribute which, if the
   relatedvalue attribute is present will be the initial value of the input
   box.
   
 =back  =back
   
 To create the choices programmatically, either wrap the choices in   To create the choices programmatically, either wrap the choices in 
Line 1162  sub start_choice { Line 1169  sub start_choice {
     my $computer = $token->[2]{'computer'};      my $computer = $token->[2]{'computer'};
     my $human = &mt(&Apache::lonxml::get_all_text('/choice',      my $human = &mt(&Apache::lonxml::get_all_text('/choice',
                                               $parser));                                                $parser));
     my $nextstate = $token->[2]{'nextstate'};      my $nextstate  = $token->[2]{'nextstate'};
     my $evalFlag = $token->[2]{'eval'};      my $evalFlag   = $token->[2]{'eval'};
       my $relatedVar = $token->[2]{'relatedvalue'}; 
       my $relatedDefault = $token->[2]{'relateddefault'};
     push @{$paramHash->{CHOICES}}, [&mtn($human), $computer, $nextstate,       push @{$paramHash->{CHOICES}}, [&mtn($human), $computer, $nextstate, 
                                     $evalFlag];                                      $evalFlag, $relatedVar, $relatedDefault];
     return '';      return '';
 }  }
   
Line 1275  BUTTONS Line 1284  BUTTONS
         }          }
         $result .= qq{id="id$id"};          $result .= qq{id="id$id"};
         my $choiceLabel = $choice->[0];          my $choiceLabel = $choice->[0];
         if ($choice->[4]) {  # if we need to evaluate this choice          if ($choice->[3]) {  # if we need to evaluate this choice
             $choiceLabel = "sub { my $helper = shift; my $state = shift;" .              $choiceLabel = "sub { my $helper = shift; my $state = shift;" .
                 $choiceLabel . "}";                  $choiceLabel . "}";
             $choiceLabel = eval($choiceLabel);              $choiceLabel = eval($choiceLabel);
             $choiceLabel = &$choiceLabel($helper, $self);              $choiceLabel = &$choiceLabel($helper, $self);
         }          }
         $result .= "/></td><td> ".qq{<label for="id$id">}.          $result .= "/></td><td> ".qq{<label for="id$id">}.
             $choiceLabel. "</label></td></tr>\n";              $choiceLabel. "</label></td>";
    if ($choice->[4]) {
       $result .='<td><input type="text" size="5" name="'
    .$choice->[4].'.forminput" value="'
                   .$choice->[5].'" /></td>';
    }
    $result .= "</tr>\n";
     }      }
     $result .= "</table>\n\n\n";      $result .= "</table>\n\n\n";
     $result .= $buttons;      $result .= $buttons;
Line 1316  sub postprocess { Line 1331  sub postprocess {
                 $helper->changeState($choice->[2]);                  $helper->changeState($choice->[2]);
             }              }
         }          }
    if ($choice->[4]) {
       my $varname = $choice->[4];
       $helper->{'VARS'}->{$varname} = $env{'form.'."$varname.forminput"};
    }
     }      }
     return 1;      return 1;
 }  }
Line 1559  sub render { Line 1578  sub render {
     my $time=time;      my $time=time;
     my ($anytime,$onclick);      my ($anytime,$onclick);
   
     if (defined($self->{DEFAULT_VALUE})) {  
       # first check VARS for a valid new value from the user
       # then check DEFAULT_VALUE for a valid default time value
       # otherwise pick now as reasonably good time
   
       if (defined($helper->{VARS}{$var})
    &&  $helper->{VARS}{$var} > 0) {
    $date = localtime($helper->{VARS}{$var});
       } elsif (defined($self->{DEFAULT_VALUE})) {
         my $valueFunc = eval($self->{DEFAULT_VALUE});          my $valueFunc = eval($self->{DEFAULT_VALUE});
         die('Error in default value code for variable ' .           die('Error in default value code for variable ' . 
             $self->{'variable'} . ', Perl said: ' . $@) if $@;              $self->{'variable'} . ', Perl said: ' . $@) if $@;
         $time = &$valueFunc($helper, $self);          $time = &$valueFunc($helper, $self);
  if (lc($time) eq 'anytime') { $time=time; $anytime=1; }   if (lc($time) eq 'anytime') {
       $anytime=1;
       $date = localtime(time);
       $date->min(0);
    } elsif (defined($time) && $time ne 0) {
       $date = localtime($time);
    } else {
       # leave date undefined so it'll default to now
    }
     }      }
   
       if (!defined($date) && !$anytime) {
    $date = localtime(time);
    $date->min(0);
       }
   
       &Apache::lonnet::logthis("date mode ");
   
     if ($anytime) {      if ($anytime) {
  $onclick = "onclick=\"javascript:updateCheck(this.form,'${var}anytime',false)\"";   $onclick = "onclick=\"javascript:updateCheck(this.form,'${var}anytime',false)\"";
     }      }
     # Default date: The current hour.      # Default date: The current hour.
     $date = localtime($time);  
     $date->min(0);  
   
     if (defined $self->{ERROR_MSG}) {      if (defined $self->{ERROR_MSG}) {
         $result .= '<font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br /><br />';          $result .= '<font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br /><br />';
Line 1722  sub postprocess { Line 1763  sub postprocess {
  $helper->{VARS}->{$var} = $chosenDate;   $helper->{VARS}->{$var} = $chosenDate;
     }      }
   
       if (defined($self->{VALIDATOR})) {
    my $validator = eval($self->{VALIDATOR});
    die 'Died during evaluation of evaulation code; Perl said: ' . $@ if $@;
    my $invalid = &$validator($helper, $state, $self, $self->getValue());
    if ($invalid) {
       $self->{ERROR_MSG} = $invalid;
       return 0;
    }
       }
   
     if (defined($self->{NEXTSTATE})) {      if (defined($self->{NEXTSTATE})) {
         $helper->changeState($self->{NEXTSTATE});          $helper->changeState($self->{NEXTSTATE});
     }      }
Line 2296  sub render { Line 2347  sub render {
             }               } 
         }          }
     }      }
       function checkexpired()  {
    for (i=0; i<document.forms.helpform.elements.length; i++) {
               if (document.forms.helpform.elements[i].value.indexOf(':Expired') != -1) {
                   document.forms.helpform.elements[i].checked=true;
               } 
           }
       }
     function uncheckexpired() {      function uncheckexpired() {
  for (i=0; i<document.forms.helpform.elements.length; i++) {   for (i=0; i<document.forms.helpform.elements.length; i++) {
             if (document.forms.helpform.elements[i].value.indexOf(':Expired') != -1) {              if (document.forms.helpform.elements[i].value.indexOf(':Expired') != -1) {
Line 2364  SCRIPT Line 2422  SCRIPT
 </table>  </table>
 <br />  <br />
 BUTTONS  BUTTONS
       $result .= $buttons;   
   
     }      }
   
     if (defined $self->{ERROR_MSG}) {      if (defined $self->{ERROR_MSG}) {
         $result .= '<font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br /><br />';          $result .= '<font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br /><br />';
     }      }
   
       my %defaultUsers;
       if (defined($self->{DEFAULT_VALUE})) {
           my $valueFunc = eval($self->{DEFAULT_VALUE});
           die 'Error in default value code for variable ' . 
               $self->{'variable'} . ', Perl said: ' . $@ if $@;
           my @defaultUsers = &$valueFunc($helper, $self);
    if (!$self->{'multichoice'} && @defaultUsers) { # only allowed 1
       @defaultUsers = ($defaultUsers[0]);
    }
    %defaultUsers = map { if ($_) {($_,1) } } @defaultUsers;
    delete($defaultUsers{''});
       }
     my $choices = [];      my $choices = [];
       my $expired_students = []; # Will hold expired students.
   
     # Load up the non-students, if necessary      # Load up the non-students, if necessary
     if ($self->{'coursepersonnel'}) {      if ($self->{'coursepersonnel'}) {
Line 2408  BUTTONS Line 2481  BUTTONS
         }          }
         return $classlist->{$a}->[$fullname] cmp $classlist->{$b}->[$fullname];          return $classlist->{$a}->[$fullname] cmp $classlist->{$b}->[$fullname];
     } @keys;      } @keys;
       #
       #  now add the fancy section choice... first enumerate the sections:
       if ($self->{'multichoice'}) {
    my %sections;
    for my $key (@keys) {
       my $section_name = $classlist->{$key}->[$section];
       if ($section_name ne "") {
    $sections{$section_name} = 1;
       }
    }
    #  The variable $choice_widget will have the html to make the choice 
    #  selector.
    my $size=5;
    if (scalar(keys(%sections)) < 5) {
       $size=scalar(keys(%sections));
    }
    my $choice_widget = '<select multiple name="chosensections" size="'.$size.'">'."\n";
    foreach my $sec (sort {lc($a) cmp lc($b)} (keys(%sections))) {
       $choice_widget .= "<option name=\"$sec\">$sec</option>\n";
    }
    $choice_widget .= "<option>none</option></select>\n";
   
    # Build a table without any borders to contain the section based
    # selection:
   
    my $section_selectors =<<SECTIONSELECT;
   <table border="0">
     <tr valign="top">
      <td>For Sections:</td><td>$choice_widget</td>
      <td><label><input type="radio" name="personstate" value="Active" checked />
                  Current Students</label></td>
      <td><label><input type="radio" name="personstate" value="All" />
                  All students</label></td>
      <td><label><input type="radio" name="personstate" value="Expired" />
                  Expired Students</label></td>
     </tr>
     <tr>
      <td><input type="button" value="Select" onclick="checksections(true);" /></td>
      <td><input type="button" value="Unselect" onclick="checksections(false);" /></td></tr>
   </table>
   <br />
   SECTIONSELECT
            $result .= $section_selectors;
       }
   
     # username, fullname, section, type      # username, fullname, section, type
     for (@keys) {      for (@keys) {
  # Filter out inactive students if we've set "activeonly"  
  if (!$self->{'activeonly'} || $classlist->{$_}->[$status] eq   # We split the active students into the choices array and
           # inactive ones into expired_students so that we can put them in 2 separate
    # tables.
   
    if ( $classlist->{$_}->[$status] eq
     'Active') {      'Active') {
     push @$choices, [$_, $classlist->{$_}->[$fullname],       push @$choices, [$_, $classlist->{$_}->[$fullname], 
      $classlist->{$_}->[$section],       $classlist->{$_}->[$section],
      $classlist->{$_}->[$status], 'Student'];       $classlist->{$_}->[$status], 'Student'];
    } else {
       push @$expired_students, [$_, $classlist->{$_}->[$fullname], 
         $classlist->{$_}->[$section],
         $classlist->{$_}->[$status], 'Student'];
  }   }
     }      }
   
Line 2431  BUTTONS Line 2556  BUTTONS
  "<td align='center'><b>".&mt('Username').":".&mt('Domain')."</b></td></tr>";   "<td align='center'><b>".&mt('Username').":".&mt('Domain')."</b></td></tr>";
   
     my $checked = 0;      my $checked = 0;
       #
       # Give the active students and staff:
       #
     for my $choice (@$choices) {      for my $choice (@$choices) {
         $result .= "<tr><td><input type='$type' name='" .          $result .= "<tr><td><input type='$type' name='" .
             $self->{'variable'} . '.forminput' . "'";              $self->{'variable'} . '.forminput' . "'";
                           
         if (!$self->{'multichoice'} && !$checked) {   if (%defaultUsers) {
       my $user=$choice->[0];
       if (exists($defaultUsers{$user})) {
    $result .= " checked='checked' ";
    $checked = 1;
       }
    } elsif (!$self->{'multichoice'} && !$checked) {
             $result .= " checked='checked' ";              $result .= " checked='checked' ";
             $checked = 1;              $checked = 1;
         }          }
Line 2456  BUTTONS Line 2590  BUTTONS
     . HTML::Entities::encode($choice->[0],'<>&"')      . HTML::Entities::encode($choice->[0],'<>&"')
     . "</td></tr>\n";      . "</td></tr>\n";
     }      }
   
     $result .= "</table>\n\n";      $result .= "</table>\n\n";
     $result .= $buttons;     
       # If activeonly is not set then we can also give the expired students:
     #      #
     #  now add the fancy section choice... first enumerate the sections:      if (!$self->{'activeonly'} && ((scalar @$expired_students) > 0)) {
     if ($self->{'multichoice'}) {   $result .= "<p>Inactive students: </p>\n";
  my %sections;   $result .= <<INACTIVEBUTTONS;
  for my $key (@keys) {     <table>
     my $section_name = $classlist->{$key}->[$section];                <tr>
     if ($section_name ne "") {                   <td><input type="button" value="Select expired" onclick="checkexpired();" /> </td>
  $sections{$section_name} = 1;   <td><input type="button" value="Unselect expired" onclick="uncheckexpired();" /></td>
                 </tr>
              </table>
   INACTIVEBUTTONS
    $result .= "<table>\n";
   
    for my $choice (@$expired_students) {
           $result .= "<tr><td><input type='$type' name='" .
               $self->{'variable'} . '.forminput' . "'";
               
    if (%defaultUsers) {
       my $user=$choice->[0];
       if (exists($defaultUsers{$user})) {
    $result .= " checked='checked' ";
    $checked = 1;
     }      }
    } elsif (!$self->{'multichoice'} && !$checked) {
               $result .= " checked='checked' ";
               $checked = 1;
           }
           $result .=
               " value='" . HTML::Entities::encode($choice->[0] . ':' 
    .$choice->[2] . ':' 
    .$choice->[1] . ':' 
    .$choice->[3], "<>&\"'")
               . "' /></td><td>"
               . HTML::Entities::encode($choice->[1],'<>&"')
               . "</td><td align='center'>" 
               . HTML::Entities::encode($choice->[2],'<>&"')
               . "</td>\n<td>" 
       . HTML::Entities::encode($choice->[3],'<>&"')
               . "</td>\n<td>" 
       . HTML::Entities::encode($choice->[4],'<>&"')
               . "</td>\n<td>" 
       . HTML::Entities::encode($choice->[0],'<>&"')
       . "</td></tr>\n";    
  }   }
  #  The variable $choice_widget will have the html to make the choice    $result .= "</table>\n";
  #  selector.  
  my $size=5;      }
  if (scalar(keys(%sections)) < 5) {  
     $size=scalar(keys(%sections));  
  }  
  my $choice_widget = '<select multiple name="chosensections" size="'.$size.'">'."\n";  
  foreach my $sec (sort {lc($a) cmp lc($b)} (keys(%sections))) {  
     $choice_widget .= "<option name=\"$sec\">$sec</option>\n";  
  }  
  $choice_widget .= "<option>none</option></select>\n";  
   
  # Build a table without any borders to contain the section based  
  # selection:  
   
  my $section_selectors =<<SECTIONSELECT;  
 <table border="0">  
   <tr valign="top">  
    <td>For Sections:</td><td>$choice_widget</td>  
    <td><label><input type="radio" name="personstate" value="Active" checked />  
                Current Students</label></td>  
    <td><label><input type="radio" name="personstate" value="All" />  
                All students</label></td>  
    <td><label><input type="radio" name="personstate" value="Expired" />  
                Expired Students</label></td>  
   </tr>  
   <tr>  
    <td><input type="button" value="Select" onclick="checksections(true);" /></td>  
    <td><input type="button" value="Unselect" onclick="checksections(false);" /></td></tr>  
 </table>  
 <br />  
 SECTIONSELECT  
          $result .= $section_selectors;  
     }  
     return $result;      return $result;
 }  }
   
Line 2897  package Apache::lonhelper::section; Line 3037  package Apache::lonhelper::section;
 <section> allows the user to choose one or more sections from the current  <section> allows the user to choose one or more sections from the current
 course.  course.
   
 It takes the standard attributes "variable", "multichoice", and  It takes the standard attributes "variable", "multichoice",
 "nextstate", meaning what they do for most other elements.  "allowempty" and "nextstate", meaning what they do for most other
   elements.
   
   also takes a boolean 'onlysections' whcih will restrict this to only
   have sections and not include groups
   
 =cut  =cut
   
Line 2928  sub start_section { Line 3072  sub start_section {
     $paramHash->{'variable'} = $token->[2]{'variable'};      $paramHash->{'variable'} = $token->[2]{'variable'};
     $helper->declareVar($paramHash->{'variable'});      $helper->declareVar($paramHash->{'variable'});
     $paramHash->{'multichoice'} = $token->[2]{'multichoice'};      $paramHash->{'multichoice'} = $token->[2]{'multichoice'};
       $paramHash->{'allowempty'} = $token->[2]{'allowempty'};
     if (defined($token->[2]{'nextstate'})) {      if (defined($token->[2]{'nextstate'})) {
         $paramHash->{NEXTSTATE} = $token->[2]{'nextstate'};          $paramHash->{NEXTSTATE} = $token->[2]{'nextstate'};
     }      }
Line 2947  sub start_section { Line 3092  sub start_section {
     }       } 
         
     for my $sectionName (sort(keys(%choices))) {      for my $sectionName (sort(keys(%choices))) {
            push @{$paramHash->{CHOICES}}, [$sectionName, $sectionName];
         push @{$paramHash->{CHOICES}}, [$sectionName, $sectionName];      }
       return if ($token->[2]{'onlysections'});
   
       # add in groups to the end of the list
       my %curr_groups;
       if (&Apache::loncommon::coursegroups(\%curr_groups)) {
    foreach my $group_name (sort(keys(%curr_groups))) {
       push(@{$paramHash->{CHOICES}}, [$group_name, $group_name]);
    }
     }      }
 }      }    
   
Line 2962  sub end_section { Line 3115  sub end_section {
 }      }    
 1;  1;
   
   package Apache::lonhelper::group;
   
   =pod
    
   =head2 Element: groupX<group, helper element>
    
   <group> allows the user to choose one or more groups from the current course.
   
   It takes the standard attributes "variable", "multichoice",
    "allowempty" and "nextstate", meaning what they do for most other
    elements.
   
   =cut
   
   no strict;
   @ISA = ("Apache::lonhelper::choices");
   use strict;
   
   BEGIN {
       &Apache::lonhelper::register('Apache::lonhelper::group',
                                    ('group'));
   }
   
   sub new {
       my $ref = Apache::lonhelper::choices->new();
       bless($ref);
   }
    
   sub start_group {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    
       if ($target ne 'helper') {
           return '';
       }
   
       $paramHash->{CHOICES} = [];
   
       $paramHash->{'variable'} = $token->[2]{'variable'};
       $helper->declareVar($paramHash->{'variable'});
       $paramHash->{'multichoice'} = $token->[2]{'multichoice'};
       $paramHash->{'allowempty'} = $token->[2]{'allowempty'};
       if (defined($token->[2]{'nextstate'})) {
           $paramHash->{NEXTSTATE} = $token->[2]{'nextstate'};
       }
   
       # Populate the CHOICES element
       my %choices;
   
       my %curr_groups;
       if (&Apache::loncommon::coursegroups(\%curr_groups)) {
    foreach my $group_name (sort(keys(%curr_groups))) {
       push(@{$paramHash->{CHOICES}}, [$group_name, $group_name]);
    }
       }
   }
   
   sub end_group {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
       if ($target ne 'helper') {
           return '';
       }
       Apache::lonhelper::group->new();
   }
   1;
   
 package Apache::lonhelper::string;  package Apache::lonhelper::string;
   
 =pod  =pod
Line 3343  sub render { Line 3562  sub render {
     }      }
     my $previous = HTML::Entities::encode(&mt("<- Previous"), '<>&"');      my $previous = HTML::Entities::encode(&mt("<- Previous"), '<>&"');
     my $next = HTML::Entities::encode(&mt("Next ->"), '<>&"');      my $next = HTML::Entities::encode(&mt("Next ->"), '<>&"');
       my $target = " target='loncapaclient'";
       if (($env{'browser.interface'} eq 'textual') ||
           ($env{'environment.remote'} eq 'off')) {  $target='';  }
     $result .= "<center>\n" .      $result .= "<center>\n" .
  "<form action='".$actionURL."' method='post' target='loncapaclient'>\n" .   "<form action='".$actionURL."' method='post' $target>\n" .
  "<input type='button' onclick='history.go(-1)' value='$previous' />" .   "<input type='button' onclick='history.go(-1)' value='$previous' />" .
  "<input type='hidden' name='orgurl' value='$targetURL' />" .   "<input type='hidden' name='orgurl' value='$targetURL' />" .
  "<input type='hidden' name='selectrole' value='1' />\n" .   "<input type='hidden' name='selectrole' value='1' />\n" .
Line 3545  sub render { Line 3767  sub render {
         $result .= '<li>'.&mt('for section [_1]',"<b>$section</b>").'</li>';          $result .= '<li>'.&mt('for section [_1]',"<b>$section</b>").'</li>';
  $result .= "<input type='hidden' name='csec' value='" .   $result .= "<input type='hidden' name='csec' value='" .
             HTML::Entities::encode($section,"'<>&\"") . "' />\n";              HTML::Entities::encode($section,"'<>&\"") . "' />\n";
       } elsif ($vars->{TARGETS} eq 'group') {
           my $group = $vars->{GROUP_NAME};
           $result .= '<li>'.&mt('for group [_1]',"<b>$group</b>").'</li>';
           $result .= "<input type='hidden' name='cgroup' value='" .
               HTML::Entities::encode($group,"'<>&\"") . "' />\n";
     } else {      } else {
         # FIXME: This is probably wasteful! Store the name!          # FIXME: This is probably wasteful! Store the name!
         my $classlist = Apache::loncoursedata::get_classlist();          my $classlist = Apache::loncoursedata::get_classlist();
Removed from v.1.125  
changed lines
  Added in v.1.137

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