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Diff for /loncom/homework/lonhomework.pm between versions 1.349.2.3 and 1.356

version 1.349.2.3, 2015/05/26 13:25:52 version 1.356, 2015/07/17 19:11:09
Line 49  use Apache::matchresponse(); Line 49  use Apache::matchresponse();
 use Apache::chemresponse();  use Apache::chemresponse();
 use Apache::functionplotresponse();  use Apache::functionplotresponse();
 use Apache::drawimage();  use Apache::drawimage();
   use Apache::loncapamath();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::loncommon();  use Apache::loncommon();
 use Apace::lonparmset();  use Apache::lonparmset();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Time::HiRes qw( gettimeofday tv_interval );  use Time::HiRes qw( gettimeofday tv_interval );
 use HTML::Entities();  use HTML::Entities();
Line 209  sub proctor_checked_in { Line 210  sub proctor_checked_in {
 }  }
   
 sub check_slot_access {  sub check_slot_access {
     my ($id,$type)=@_;      my ($id,$type,$symb)=@_;
   
     # does it pass normal muster      # does it pass normal muster
     my ($status,$datemsg)=&check_access($id);      my ($status,$datemsg)=&check_access($id,$symb);
           
     my $useslots = &Apache::lonnet::EXT("resource.0.useslots");      my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
     if ($useslots ne 'resource' && $useslots ne 'map'       if ($useslots ne 'resource' && $useslots ne 'map' 
  && $useslots ne 'map_map') {   && $useslots ne 'map_map') {
  return ($status,$datemsg);   return ($status,$datemsg);
Line 238  sub check_slot_access { Line 239  sub check_slot_access {
  }   }
     }      }
   
     my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent");      my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent",$symb);
     my $available = &Apache::lonnet::EXT("resource.0.available");      my $available = &Apache::lonnet::EXT("resource.0.available",$symb);
     my @slots= (split(':',$availablestudent),split(':',$available));      my @slots= (split(':',$availablestudent),split(':',$available));
   
 #    if (!@slots) {  #    if (!@slots) {
Line 311  sub check_slot_access { Line 312  sub check_slot_access {
                 if ($env{'request.course.id'}) {                  if ($env{'request.course.id'}) {
                     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};                      my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};                      my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
                     my ($symb)=&Apache::lonnet::whichuser();                      unless ($symb) {
                           ($symb)=&Apache::lonnet::whichuser();
                       }
                     $slotstatus = 'NOTRESERVABLE';                      $slotstatus = 'NOTRESERVABLE';
                     my ($reservable_now_order,$reservable_now,$reservable_future_order,                      my ($reservable_now_order,$reservable_now,$reservable_future_order,
                         $reservable_future) =                           $reservable_future) = 
Line 365  sub check_slot_access { Line 368  sub check_slot_access {
 # JB, 9/24/2002: Any changes in this function may require a change  # JB, 9/24/2002: Any changes in this function may require a change
 # in lonnavmaps::resource::getDateStatus.  # in lonnavmaps::resource::getDateStatus.
 sub check_access {  sub check_access {
     my ($id) = @_;      my ($id,$symb) = @_;
     my $date ='';      my $date ='';
     my $status;      my $status;
     my $datemsg = '';      my $datemsg = '';
Line 395  sub check_access { Line 398  sub check_access {
     &Apache::lonxml::debug("checking for part :$id:");      &Apache::lonxml::debug("checking for part :$id:");
     &Apache::lonxml::debug("time:".time);      &Apache::lonxml::debug("time:".time);
   
     my ($symb)=&Apache::lonnet::whichuser();      unless ($symb) {
           ($symb)=&Apache::lonnet::whichuser();
       }
     &Apache::lonxml::debug("symb:".$symb);      &Apache::lonxml::debug("symb:".$symb);
     #if ($env{'request.state'} ne "construct" && $symb ne '') {      #if ($env{'request.state'} ne "construct" && $symb ne '') {
     if ($env{'request.state'} ne "construct") {      if ($env{'request.state'} ne "construct") {
         my $idacc = &Apache::lonnet::EXT("resource.$id.acc");          my $idacc = &Apache::lonnet::EXT("resource.$id.acc",$symb);
  my $allowed=&Apache::loncommon::check_ip_acc($idacc);   my $allowed=&Apache::loncommon::check_ip_acc($idacc);
  if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {   if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
     $status='INVALID_ACCESS';      $status='INVALID_ACCESS';
Line 415  sub check_access { Line 420  sub check_access {
  foreach my $temp ("opendate","duedate","answerdate") {   foreach my $temp ("opendate","duedate","answerdate") {
     $lastdate = $date;      $lastdate = $date;
     if ($temp eq 'duedate') {      if ($temp eq 'duedate') {
  $date = &due_date($id);   $date = &due_date($id,$symb);
     } else {      } else {
  $date = &Apache::lonnet::EXT("resource.$id.$temp");   $date = &Apache::lonnet::EXT("resource.$id.$temp",$symb);
     }      }
           
     my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");      my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type",$symb);
     if ($thistype =~ /^(con_lost|no_such_host)/ ||      if ($thistype =~ /^(con_lost|no_such_host)/ ||
  $date     =~ /^(con_lost|no_such_host)/) {   $date     =~ /^(con_lost|no_such_host)/) {
  $status='UNAVAILABLE';   $status='UNAVAILABLE';
Line 429  sub check_access { Line 434  sub check_access {
     }      }
     if ($thistype eq 'date_interval') {      if ($thistype eq 'date_interval') {
  if ($temp eq 'opendate') {   if ($temp eq 'opendate') {
     $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;      $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)-$date;
  }   }
  if ($temp eq 'answerdate') {   if ($temp eq 'answerdate') {
     $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;      $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)+$date;
  }   }
     }      }
     &Apache::lonxml::debug("found :$date: for :$temp:");      &Apache::lonxml::debug("found :$date: for :$temp:");
Line 466  sub check_access { Line 471  sub check_access {
  (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {   (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
  #check #tries, and if correct.   #check #tries, and if correct.
  my $tries = $Apache::lonhomework::history{"resource.$id.tries"};   my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
  my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");   my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries",$symb);
  if ( $tries eq '' ) { $tries = '0'; }   if ( $tries eq '' ) { $tries = '0'; }
  if ( $maxtries eq '' &&    if ( $maxtries eq '' && 
      $env{'request.state'} ne 'construct') { $maxtries = '2'; }        $env{'request.state'} ne 'construct') { $maxtries = '2'; } 
Line 475  sub check_access { Line 480  sub check_access {
  if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)   if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
       && (&show_problem_status()) ) {        && (&show_problem_status()) ) {
             if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||              if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
                 (&Apache::lonnet::EXT("resource.$id.retrypartial") !~/^1|on|yes$/i)) {                  (&Apache::lonnet::EXT("resource.$id.retrypartial",$symb) !~/^1|on|yes$/i)) {
         $status = 'CANNOT_ANSWER';          $status = 'CANNOT_ANSWER';
             }              }
         } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {          } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
Line 487  sub check_access { Line 492  sub check_access {
  }   }
     }      }
     if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {      if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
  my @interval=&Apache::lonnet::EXT("resource.$id.interval");   my @interval=&Apache::lonnet::EXT("resource.$id.interval",$symb);
  &Apache::lonxml::debug("looking for interval @interval");   &Apache::lonxml::debug("looking for interval @interval");
  if ($interval[0]) {   if ($interval[0]) {
     my $first_access=&Apache::lonnet::get_first_access($interval[1]);      my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
     &Apache::lonxml::debug("looking for accesstime $first_access");      &Apache::lonxml::debug("looking for accesstime $first_access");
     if (!$first_access) {      if (!$first_access) {
  $status='NOT_YET_VIEWED';   $status='NOT_YET_VIEWED';
  my $due_date = &due_date($id);   my $due_date = &due_date($id,$symb);
  my $seconds_left = $due_date - time;   my $seconds_left = $due_date - time;
  if ($seconds_left > $interval[0] || $due_date eq '') {   if ($seconds_left > $interval[0] || $due_date eq '') {
     $seconds_left = $interval[0];      $seconds_left = $interval[0];
Line 1015  sub editxmlmode { Line 1020  sub editxmlmode {
                 &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').                  &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
               '</div><div class="LC_edit_actionbar" id="actionbar">';                '</div><div class="LC_edit_actionbar" id="actionbar">';
   
         $result.='<input type="hidden" name="problemmode" value="saveedit" />'.      $result.='<input type="hidden" name="problemmode" value="saveedit" />'.
                   &Apache::structuretags::problem_edit_buttons('editxml');                    &Apache::structuretags::problem_edit_buttons('editxml');
         $result.='<div class="LC_edit_problem_discards">';      $result.='<div>';
   
  unless ($env{'environment.nocodemirror'}) {      $result .= '<ol class="LC_primary_menu" style="display:inline-block;font-size:90%;vertical-align:middle;">';
  # dropdown menues  
     $result .= '<ol class="LC_primary_menu LC_floatleft">'.      unless ($env{'environment.nocodemirror'}) {
     &Apache::lonmenu::create_submenu("#", "", &mt("Insert Menu"), &Apache::structuretags::insert_menu_datastructure(),"").'</ol>';          # dropdown menus
  }          $result .= Apache::lonmenu::create_submenu("#", "", 
     $result .= '<ol class="LC_primary_menu LC_floatleft">'.              &mt("Problem Templates"), template_dropdown_datastructure());
     Apache::lonmenu::create_submenu("#", "", &mt("Help"), &Apache::structuretags::helpmenu_datastructure(),"").'</ol>';  
     $result.="</div>";          $result .= Apache::lonmenu::create_submenu("#", "", 
               &mt("Response Types"), responseblock_dropdown_datastructure());
   
           $result .= Apache::lonmenu::create_submenu("#", "", 
               &mt("Conditional Blocks"), conditional_scripting_datastructure());
   
           $result .= Apache::lonmenu::create_submenu("#", "", 
               &mt("Miscellaneous"), misc_datastructure());
       }
   
       $result .= Apache::lonmenu::create_submenu("#", "", 
           &mt("Help") . ' <img src="/adm/help/help.png" alt="' . &mt("Help") .
           '" style="vertical-align:text-bottom; height: auto; margin:0; "/>', 
           helpmenu_datastructure(),"");
   
       $result.="</ol></div>";
                     
          $result.='<hr style="clear:both;visibility:hidden" /></div></div>'.&Apache::lonxml::message_location().      $result .= '</div></div>' . 
                   &Apache::loncommon::xmleditor_js().          &Apache::lonxml::message_location() .
   '<textarea '.&Apache::edit::element_change_detection().          &Apache::loncommon::xmleditor_js() .
               ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.          '<textarea ' . &Apache::edit::element_change_detection() .
       ' name="editxmltext" id="LC_editxmltext">'.          ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" ' .
       &HTML::Entities::encode($problem,'<>&"').'</textarea>          ' name="editxmltext" id="LC_editxmltext">' .
             <div id="LC_aftertextarea">          &HTML::Entities::encode($problem,'<>&"') .
             </div>          '</textarea> <div id="LC_aftertextarea"> </div> </form>';
         </form>';  
     my $resource = $env{'request.ambiguous'};      my $resource = $env{'request.ambiguous'};
     unless($env{'environment.nocodemirror'}){      unless($env{'environment.nocodemirror'}){
                   $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
         $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">          <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
         <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>          <script>
         <script>              CodeMirror.defineMode("mixedmode", function(config) {
             CodeMirror.defineMode("mixedmode", function(config) {                  return CodeMirror.multiplexingMode(
                 return CodeMirror.multiplexingMode(                      CodeMirror.getMode(config, "xml"),
                     CodeMirror.getMode(config, "xml"),                      {
                     {                          open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
                         open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",                          mode: CodeMirror.getMode(config, "perl"),
                         mode: CodeMirror.getMode(config, "perl"),                          delimStyle: "tag",
                         delimStyle: "tag",                      }
                     }                );
               );              });
             });              var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
             var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),              {
             {                  mode: "mixedmode",
                 mode: "mixedmode",                  lineWrapping: true,
                 lineWrapping: true,                  lineNumbers: true,
                 lineNumbers: true,                  tabSize: 4,
                 tabSize: 4,                  indentUnit: 4,
                 indentUnit: 4,  
                   autoCloseTags: true,
                 autoCloseTags: true,                  autoCloseBrackets: true,
                 autoCloseBrackets: true,                  height: "auto",
                 height: "auto",                  styleActiveLine: true,
                 styleActiveLine: true,                  
                                   extraKeys: {
                 extraKeys: {                      "Tab": "indentMore",
                     "Tab": "indentMore",                      "Shift-Tab": "indentLess",
                     "Shift-Tab": "indentLess",                  }
                 }              });
             });              restoreScrollPosition("'.$resource.'");
             restoreScrollPosition("'.$resource.'");          </script>';
         </script>';      }
     }  
         $result .= &Apache::loncommon::end_page();      $result .= &Apache::loncommon::end_page();
         &Apache::lonxml::add_messages(\$result);      &Apache::lonxml::add_messages(\$result);
         $request->print($result);      $request->print($result);
     }      }
     return '';      return '';
 }  }
Line 1340  sub update_construct_style { Line 1360  sub update_construct_style {
 sub zero_timer {  sub zero_timer {
     my ($symb) = @_;      my ($symb) = @_;
     my ($hastimeleft,$first_access,$now);      my ($hastimeleft,$first_access,$now);
     my @interval=&Apache::lonnet::EXT("resource.0.interval");      my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
     if (@interval > 1) {      if (@interval > 1) {
         if ($interval[1] eq 'course') {          if ($interval[1] eq 'course') {
             return;              return;
Line 1380  sub handler { Line 1400  sub handler {
     my $file=&Apache::lonnet::filelocation("",$request->uri);      my $file=&Apache::lonnet::filelocation("",$request->uri);
   
     #check if we know where we are      #check if we know where we are
     if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {       if ($env{'request.course.fn'} && !&Apache::lonnet::symbread('','',1,1)) {
  # if we are browsing we might not be able to know where we are   # if we are browsing we might not be able to know where we are
  if ($Apache::lonhomework::browse ne 'F' &&    if ($Apache::lonhomework::browse ne 'F' && 
     $env{'request.state'} ne "construct") {      $env{'request.state'} ne "construct") {
Line 1444  sub handler { Line 1464  sub handler {
   
 }  }
   
   sub template_dropdown_datastructure {
       # gathering the all templates and their path, title, category and help topic
       my @templates = get_template_list('problem');
       # template category => title
       my %tmplthash = ();
       # template title => path
       my %tmpltcontent = ();
   
       foreach my $template (@templates){
           # put in hash if the template is not empty
           unless ($template->[1] eq ''){
               push(@{$tmplthash{$template->[2]}}, $template->[1]);
               push(@{$tmpltcontent{$template->[1]}},$template->[0]);
           }
       }
   
    my $catList = [];
       foreach my $cat (sort keys %tmplthash) {
    my $catItems = [];
           foreach my $title (sort @{$tmplthash{$cat}}) {
               my $path = $tmpltcontent{$title}->[0];
               my $code;
               open(FH, "<$path");
               while(<FH>){
                   $code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
               }
               close(FH);
   
    if ($code ne '') {
                   my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code,'<>&"')) . '\')';
    my $currItem = [$href, $title, undef];
    push @{$catItems}, $currItem;
    }
           }
    push @{$catList}, [$catItems, $cat, undef];
       }
   
       return $catList;
   }
   
   sub responseblock_dropdown_datastructure {
   
    my $mathCat = [
    [
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
    ], 
    &mt("Math"), 
    undef
    ];
   
    my $miscCat = [
    [
               ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
               ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
               ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
               ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Two Lists"), undef],
               ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N statements"), undef],
               ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Select from Options"), undef], 
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
    ],
    &mt("Miscellaneous"),
    undef
    ];
   
    my $chemCat = [
    [
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Chemical Structure"), undef]
    ],
    &mt("Chemistry"),
    undef
    ];
   
    my $textCat = [
    [
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
    ],
    &mt("Text"),
    undef
    ];
   
       return [$mathCat, $miscCat, $chemCat, $textCat];
   }
   
   
   sub conditional_scripting_datastructure {
   # TODO: corresponding routines should be used for the javascript:insertText parts
   # instead of the placeholder routine default_xml_tag with the tags
   # e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
   # returns the corresponding content for this case
   
   #TODO translated is currently temporarily here, another solution should be found where the
   # needed string can be retrieved
   
    my $translatedTag = '
   <translated>
       <lang which="en"></lang>
       <lang which="default"></lang>
   </translated>';
       return [
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Block"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Date Block"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
    ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
           ];
   }
   
   sub misc_datastructure {
       return [
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef],
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef],
           ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("part"))) . "\')", &mt("Problem Part"), undef]
       ];
   }
   
   # helper routine for the datastructure building subroutines
   sub default_xml_tag {
    my ($tag) = @_;
    return "\n<$tag></$tag>";
   }
   
   
   sub helpmenu_datastructure {
   
    my $width = 500;
    my $height = 600;
   
    my $helpers = [
    ['Problem_LON-CAPA_Functions', &mt('Script Functions')],
    ['Greek_Symbols', &mt('Greek Symbols')],
     ['Other_Symbols', &mt('Other Symbols')],
    ['Authoring_Output_Tags', &mt('Output Tags')],
    ['Authoring_Multilingual_Problems', 
    &mt('How to create problems in different languages')]
    ];
   
    my $help_structure = [];
   
    foreach my $count (0..(scalar(@{$helpers})-1)) {
    my $filename = $helpers->[$count]->[0];
    my $title = $helpers->[$count]->[1];
    my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename.hlp',$width,$height,'yes');");
    push @{$help_structure}, [$href, $title, undef];
    }
   
    return $help_structure;
   }
   
   # we need substitution to not break javascript code
   sub convert_for_js {
       my $return = shift;
           $return =~ s|script|ESCAPEDSCRIPT|g;
           $return =~ s|\\|\\\\|g;
           $return =~ s|\n|\\r\\n|g;
           $return =~ s|'|\\'|g;
    $return =~ s|&#39;|\\&#39;|g;
       return $return;
   }
   
 1;  1;
 __END__  __END__
Removed from v.1.349.2.3  
changed lines
  Added in v.1.356

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