loncom/interface/loncommon.pm - diff

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Diff for /loncom/interface/loncommon.pm between versions 1.172 and 1.329

-version 1.172, 2004/01/15 01:43:43
+version 1.329, 2006/04/10 19:54:54
  Line 55  redundancy from other modules and increa
  package Apache::loncommon;
  use strict;
- use Apache::lonnet();
+ use Apache::lonnet;
  use GDBM_File;
  use POSIX qw(strftime mktime);
- use Apache::Constants qw(:common :http :methods);
- use Apache::lonmsg();
  use Apache::lonmenu();
  use Apache::lonlocal;
  use HTML::Entities;
- Line 74  my $readit;
+ Line 72  my $readit;
  my %language;
  my %supported_language;
  my %cprtag;
+ my %scprtag;
  my %fe; my %fd;
  my %category_extensions;
- Line 131  BEGIN {
+ Line 130  BEGIN {
              close($fh);
          }
      }
+ # ------------------------------------------------------------------ source copyrights
- # -------------------------------------------------------------- domain designs
-     my $filename;
-     my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
-     opendir(DIR,$designdir);
-     while ($filename=readdir(DIR)) {
- 	my ($domain)=($filename=~/^(\w+)\./);
      {
-         my $designfile = $designdir.'/'.$filename;
+         my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
-         if ( open (my $fh,"<$designfile") ) {
+                                   '/source_copyright.tab';
+         if ( open (my $fh,"<$sourcecopyrightfile") ) {
              while (<$fh>) {
                  next if /^\#/;
                  chomp;
-                 my ($key,$val)=(split(/\=/,$_));
+                 my ($key,$val)=(split(/\s+/,$_,2));
-                 if ($val) { $designhash{$domain.'.'.$key}=$val; }
+                 $scprtag{$key}=$val;
              }
              close($fh);
          }
      }
+ # -------------------------------------------------------------- domain designs
+     my $filename;
+     my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
+     opendir(DIR,$designdir);
+     while ($filename=readdir(DIR)) {
+ 	if ($filename!~/\.tab$/) { next; }
+ 	my ($domain)=($filename=~/^(\w+)\./);
+ 	{
+ 	    my $designfile = $designdir.'/'.$filename;
+ 	    if ( open (my $fh,"<$designfile") ) {
+ 		while (<$fh>) {
+ 		    next if /^\#/;
+ 		    chomp;
+ 		    my ($key,$val)=(split(/\=/,$_));
+ 		    if ($val) { $designhash{$domain.'.'.$key}=$val; }
+ 		}
+ 		close($fh);
+ 	    }
+ 	}
      }
      closedir(DIR);
- Line 220  formname and elementname indicate the na
+ Line 234  formname and elementname indicate the na
  the element that the results of the browsing selection are to be placed in.
  Specifying 'only' will restrict the browser to displaying only files
- with the given extension.  Can be a comma seperated list.
+ with the given extension.  Can be a comma separated list.
  Specifying 'omit' will restrict the browser to NOT displaying files
- with the given extension.  Can be a comma seperated list.
+ with the given extension.  Can be a comma separated list.
  =item * opensearcher(formname, elementname) [javascript]
- Line 235  of the element the selection from the se
+ Line 249  of the element the selection from the se
  =cut
  sub browser_and_searcher_javascript {
+     my ($mode)=@_;
+     if (!defined($mode)) { $mode='edit'; }
      my $resurl=&lastresurl();
      return <<END;
+ // <!-- BEGIN LON-CAPA Internal
      var editbrowser = null;
      function openbrowser(formname,elementname,only,omit,titleelement) {
          var url = '$resurl/?';
- Line 244  sub browser_and_searcher_javascript {
+ Line 261  sub browser_and_searcher_javascript {
              url += 'launch=1&';
          }
          url += 'catalogmode=interactive&';
-         url += 'mode=edit&';
+         url += 'mode=$mode&';
          url += 'form=' + formname + '&';
          if (only != null) {
              url += 'only=' + only + '&';
-         }
+         } else {
+             url += 'only=&';
+ 	}
          if (omit != null) {
              url += 'omit=' + omit + '&';
-         }
+         } else {
+             url += 'omit=&';
+ 	}
          if (titleelement != null) {
              url += 'titleelement=' + titleelement + '&';
-         }
+         } else {
+ 	    url += 'titleelement=&';
+ 	}
          url += 'element=' + elementname + '';
          var title = 'Browser';
-         var options = 'scrollbars=1,resizable=1,menubar=0';
+         var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
          options += ',width=700,height=600';
          editbrowser = open(url,title,options,'1');
          editbrowser.focus();
- Line 269  sub browser_and_searcher_javascript {
+ Line 292  sub browser_and_searcher_javascript {
              url += 'launch=1&';
          }
          url += 'catalogmode=interactive&';
-         url += 'mode=edit&';
+         url += 'mode=$mode&';
          url += 'form=' + formname + '&';
          if (titleelement != null) {
              url += 'titleelement=' + titleelement + '&';
-         }
+         } else {
+ 	    url += 'titleelement=&';
+ 	}
          url += 'element=' + elementname + '';
          var title = 'Search';
          var options = 'scrollbars=1,resizable=1,menubar=0';
- Line 281  sub browser_and_searcher_javascript {
+ Line 306  sub browser_and_searcher_javascript {
          editsearcher = open(url,title,options,'1');
          editsearcher.focus();
      }
+ // END LON-CAPA Internal -->
  END
  }
  sub lastresurl {
-     if ($ENV{'environment.lastresurl'}) {
+     if ($env{'environment.lastresurl'}) {
- 	return $ENV{'environment.lastresurl'}
+ 	return $env{'environment.lastresurl'}
      } else {
  	return '/res';
      }
- Line 303  sub storeresurl {
+ Line 329  sub storeresurl {
  sub studentbrowser_javascript {
     unless (
-             (($ENV{'request.course.id'}) &&
+             (($env{'request.course.id'}) &&
-              (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
+              (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
-          || ($ENV{'request.role'}=~/^(au|dc|su)/)
+ 	      || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
+ 					  '/'.$env{'request.course.sec'})
+ 	      ))
+          || ($env{'request.role'}=~/^(au|dc|su)/)
            ) { return ''; }
     return (<<'ENDSTDBRW');
  <script type="text/javascript" language="Javascript" >
- Line 334  ENDSTDBRW
+ Line 363  ENDSTDBRW
  sub selectstudent_link {
     my ($form,$unameele,$udomele)=@_;
-    if ($ENV{'request.course.id'}) {
+    if ($env{'request.course.id'}) {
-        unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
+        if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
+ 	   && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
+ 					'/'.$env{'request.course.sec'})) {
  	   return '';
         }
         return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
          '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
     }
-    if ($ENV{'request.role'}=~/^(au|dc|su)/) {
+    if ($env{'request.role'}=~/^(au|dc|su)/) {
         return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
          '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
     }
- Line 353  sub coursebrowser_javascript {
+ Line 384  sub coursebrowser_javascript {
     return (<<ENDSTDBRW);
  <script type="text/javascript" language="Javascript" >
      var stdeditbrowser;
-     function opencrsbrowser(formname,uname,udom) {
+     function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag) {
          var url = '/adm/pickcourse?';
          var filter;
          if (filter != null) {
- Line 368  sub coursebrowser_javascript {
+ Line 399  sub coursebrowser_javascript {
  	   }
          }
          url += 'form=' + formname + '&cnumelement='+uname+
-                                     '&cdomelement='+udom;
+ 	                            '&cdomelement='+udom+
+                                     '&cnameelement='+desc;
+         if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
+             url += '&roleelement='+extra_element;
+             if (domainfilter == null || domainfilter == '') {
+                 url += '&domainfilter='+extra_element;
+             }
+         }
+         if (multflag !=null && multflag != '') {
+             url += '&multiple='+multflag;
+         }
          var title = 'Course_Browser';
          var options = 'scrollbars=1,resizable=1,menubar=0';
          options += ',width=700,height=600';
- Line 380  ENDSTDBRW
+ Line 421  ENDSTDBRW
  }
  sub selectcourse_link {
-    my ($form,$unameele,$udomele)=@_;
+    my ($form,$unameele,$udomele,$desc,$extra_element,$multflag)=@_;
      return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
-         '","'.$udomele.'");'."'>".&mt('Select Course')."</a>";
+         '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'");'."'>".&mt('Select Course')."</a>";
  }
+ sub check_uncheck_jscript {
+     my $jscript = <<"ENDSCRT";
+ function checkAll(field) {
+     if (field.length > 0) {
+         for (i = 0; i < field.length; i++) {
+             field[i].checked = true ;
+         }
+     } else {
+         field.checked = true
+     }
+ }
+ function uncheckAll(field) {
+     if (field.length > 0) {
+         for (i = 0; i < field.length; i++) {
+             field[i].checked = false ;
+         }     } else {
+         field.checked = false ;
+     }
+ }
+ ENDSCRT
+     return $jscript;
+ }
  =pod
  =item * linked_select_forms(...)
- Line 465  sub linked_select_forms {
+ Line 531  sub linked_select_forms {
      my $first = "document.$formname.$firstselectname";
      # output the javascript to do the changing
      my $result = '';
-     $result.="<script>\n";
+     $result.="<script type=\"text/javascript\">\n";
      $result.="var select2data = new Object();\n";
      $" = '","';
      my $debug = '';
- Line 514  END
+ Line 580  END
      $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
      foreach my $value (sort(keys(%$hashref))) {
          $result.="    <option value=\"$value\" ";
-         $result.=" selected=\"true\" " if ($value eq $firstdefault);
+         $result.=" selected=\"selected\" " if ($value eq $firstdefault);
          $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
      }
      $result .= "</select>\n";
- Line 524  END
+ Line 590  END
      my $seconddefault = $hashref->{$firstdefault}->{'default'};
      foreach my $value (sort(keys(%select2))) {
          $result.="    <option value=\"$value\" ";
-         $result.=" selected=\"true\" " if ($value eq $seconddefault);
+         $result.=" selected=\"selected\" " if ($value eq $seconddefault);
          $result.=">".&mt($select2{$value})."</option>\n";
      }
      $result .= "</select>\n";
- Line 560  sub help_open_topic {
+ Line 626  sub help_open_topic {
      my ($topic, $text, $stayOnPage, $width, $height) = @_;
      $text = "" if (not defined $text);
      $stayOnPage = 0 if (not defined $stayOnPage);
-     if ($ENV{'browser.interface'} eq 'textual' ||
+     if ($env{'browser.interface'} eq 'textual' ||
- 	$ENV{'environment.remote'} eq 'off' ) {
+ 	$env{'environment.remote'} eq 'off' ) {
  	$stayOnPage=1;
      }
      $width = 350 if (not defined $width);
- Line 592  sub help_open_topic {
+ Line 658  sub help_open_topic {
      }
      # Add the graphic
+     my $title = &mt('Online Help');
+     my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
      $template .= <<"ENDTEMPLATE";
-  <a href="$link"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
+  <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
  ENDTEMPLATE
      if ($text ne '') { $template.='</td></tr></table>' };
      return $template;
- Line 620  sub helpLatexCheatsheet {
+ Line 688  sub helpLatexCheatsheet {
  	.'</td></tr></table>';
  }
+ sub help_open_menu {
+     my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
+     $text = "" if (not defined $text);
+     $stayOnPage = 0 if (not defined $stayOnPage);
+     if ($env{'browser.interface'} eq 'textual' ||
+         $env{'environment.remote'} eq 'off' ) {
+         $stayOnPage=1;
+     }
+     $width = 620 if (not defined $width);
+     $height = 600 if (not defined $height);
+     my $link='';
+     my $title = &mt('Get help');
+     my $origurl = $ENV{'REQUEST_URI'};
+     $origurl=~s|^/~|/priv/|;
+     my $timestamp = time;
+     foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
+         $$_ = &Apache::lonnet::escape($$_);
+     }
+     if (!$stayOnPage) {
+          $link = "javascript:helpMenu('open')";
+     } else {
+         $link = "javascript:helpMenu('display')";
+     }
+     my $banner_link = "/adm/helpmenu?page=banner&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp&stayonpage=$stayOnPage";
+     my $details_link = "/adm/helpmenu?page=body&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp";
+     my $template;
+     if ($text ne "") {
+ 	$template .=
+   "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
+   "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
+     }
+     my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
+     my $html=&Apache::lonxml::xmlbegin();
+     my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
+     $template .= <<"ENDTEMPLATE";
+  <script type="text/javascript">
+ // <!-- BEGIN LON-CAPA Internal
+ // <![CDATA[
+ function helpMenu(target) {
+     var caller = this;
+     if (target == 'open') {
+         var newWindow = null;
+         try {
+             newWindow =  window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
+         }
+         catch(error) {
+             writeHelp(caller);
+             return;
+         }
+         if (newWindow) {
+             caller = newWindow;
+         }
+     }
+     writeHelp(caller);
+     return;
+ }
+ function writeHelp(caller) {
+     caller.document.writeln('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
+     caller.document.writeln("<frameset rows='105,*' border='0'><frame name='bannerframe'  src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
+     caller.document.writeln("</html>")
+     caller.document.close()
+     caller.focus()
+ }
+ // ]]>
+ // END LON-CAPA Internal -->
+  </script>
+  <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
+ ENDTEMPLATE
+     if ($component_help) {
+ 	if (!$text) {
+ 	    $template=&help_open_topic($component_help,undef,$stayOnPage,
+ 				       $width,$height).' '.$template;
+ 	} else {
+ 	    my $help_text;
+ 	    $help_text=&Apache::lonnet::unescape($topic);
+ 	    $template='<table><tr><td>'.
+ 		&help_open_topic($component_help,$help_text,$stayOnPage,
+ 				 $width,$height).'</td><td>'.$template.
+ 				 '</td></tr></table>';
+ 	}
+     }
+     if ($text ne '') { $template.='</td></tr></table>' };
+     return $template;
+ }
  sub help_open_bug {
      my ($topic, $text, $stayOnPage, $width, $height) = @_;
-     unless ($ENV{'user.adv'}) { return ''; }
+     unless ($env{'user.adv'}) { return ''; }
      unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
      $text = "" if (not defined $text);
      $stayOnPage = 0 if (not defined $stayOnPage);
-     if ($ENV{'browser.interface'} eq 'textual' ||
+     if ($env{'browser.interface'} eq 'textual' ||
- 	$ENV{'environment.remote'} eq 'off' ) {
+ 	$env{'environment.remote'} eq 'off' ) {
  	$stayOnPage=1;
      }
-     $width = 350 if (not defined $width);
+     $width = 600 if (not defined $width);
-     $height = 400 if (not defined $height);
+     $height = 600 if (not defined $height);
      $topic=~s/\W+/\+/g;
      my $link='';
- Line 646  sub help_open_bug {
+ Line 799  sub help_open_bug {
      {
  	$link = $url;
      }
      # Add the text
      if ($text ne "")
      {
- Line 656  sub help_open_bug {
+ Line 808  sub help_open_bug {
      }
      # Add the graphic
+     my $title = &mt('Report a Bug');
+     my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
      $template .= <<"ENDTEMPLATE";
-  <a href="$link"><image src="/adm/lonMisc/smallBug.gif" border="0" alt="(Bug: $topic)" /></a>
+  <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
  ENDTEMPLATE
      if ($text ne '') { $template.='</td></tr></table>' };
      return $template;
- Line 666  ENDTEMPLATE
+ Line 820  ENDTEMPLATE
  sub help_open_faq {
      my ($topic, $text, $stayOnPage, $width, $height) = @_;
-     unless ($ENV{'user.adv'}) { return ''; }
+     unless ($env{'user.adv'}) { return ''; }
      unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
      $text = "" if (not defined $text);
      $stayOnPage = 0 if (not defined $stayOnPage);
-     if ($ENV{'browser.interface'} eq 'textual' ||
+     if ($env{'browser.interface'} eq 'textual' ||
- 	$ENV{'environment.remote'} eq 'off' ) {
+ 	$env{'environment.remote'} eq 'off' ) {
  	$stayOnPage=1;
      }
      $width = 350 if (not defined $width);
- Line 694  sub help_open_faq {
+ Line 848  sub help_open_faq {
      if ($text ne "")
      {
  	$template .=
-   "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
+   "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
-   "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
+   "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
      }
      # Add the graphic
+     my $title = &mt('View the FAQ');
+     my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
      $template .= <<"ENDTEMPLATE";
-  <a href="$link"><image src="/adm/lonMisc/smallFAQ.gif" border="0" alt="(FAQ: $topic)" /></a>
+  <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
  ENDTEMPLATE
      if ($text ne '') { $template.='</td></tr></table>' };
      return $template;
  }
- =pod
+ ###############################################################
+ ###############################################################
- =item * csv_translate($text)
- Translate $text to allow it to be output as a 'comma seperated values'
- format.
- =cut
- sub csv_translate {
-     my $text = shift;
-     $text =~ s/\"/\"\"/g;
-     $text =~ s/\n//g;
-     return $text;
- }
  =pod
- Line 755  pretty much any HTML.
+ Line 898  pretty much any HTML.
  sub change_content_javascript {
      # If we're on Netscape 4, we need to use Layer-based code
-     if ($ENV{'browser.type'} eq 'netscape' &&
+     if ($env{'browser.type'} eq 'netscape' &&
- 	$ENV{'browser.version'} =~ /^4\./) {
+ 	$env{'browser.version'} =~ /^4\./) {
  	return (<<NETSCAPE4);
  	function change(name, content) {
  	    doc = document.layers[name+"___escape"].layers[0].document;
- Line 793  the area will originally contain, which
+ Line 936  the area will originally contain, which
  sub changable_area {
      my ($name, $origContent) = @_;
-     if ($ENV{'browser.type'} eq 'netscape' &&
+     if ($env{'browser.type'} eq 'netscape' &&
- 	$ENV{'browser.version'} =~ /^4\./) {
+ 	$env{'browser.version'} =~ /^4\./) {
  	# If this is netscape 4, we need to use the Layer tag
  	return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
      } else {
- Line 806  sub changable_area {
+ Line 949  sub changable_area {
  =back
+ =head1 Excel and CSV file utility routines
+ =over 4
+ =cut
+ ###############################################################
+ ###############################################################
+ =pod
+ =item * csv_translate($text)
+ Translate $text to allow it to be output as a 'comma separated values'
+ format.
+ =cut
+ ###############################################################
+ ###############################################################
+ sub csv_translate {
+     my $text = shift;
+     $text =~ s/\"/\"\"/g;
+     $text =~ s/\n/ /g;
+     return $text;
+ }
+ ###############################################################
+ ###############################################################
+ =pod
+ =item * define_excel_formats
+ Define some commonly used Excel cell formats.
+ Currently supported formats:
+ =over 4
+ =item header
+ =item bold
+ =item h1
+ =item h2
+ =item h3
+ =item h4
+ =item i
+ =item date
+ =back
+ Inputs: $workbook
+ Returns: $format, a hash reference.
+ =cut
+ ###############################################################
+ ###############################################################
+ sub define_excel_formats {
+     my ($workbook) = @_;
+     my $format;
+     $format->{'header'} = $workbook->add_format(bold      => 1,
+                                                 bottom    => 1,
+                                                 align     => 'center');
+     $format->{'bold'} = $workbook->add_format(bold=>1);
+     $format->{'h1'}   = $workbook->add_format(bold=>1, size=>18);
+     $format->{'h2'}   = $workbook->add_format(bold=>1, size=>16);
+     $format->{'h3'}   = $workbook->add_format(bold=>1, size=>14);
+     $format->{'h4'}   = $workbook->add_format(bold=>1, size=>12);
+     $format->{'i'}    = $workbook->add_format(italic=>1);
+     $format->{'date'} = $workbook->add_format(num_format=>
+                                             'mm/dd/yyyy hh:mm:ss');
+     return $format;
+ }
+ ###############################################################
+ ###############################################################
+ =pod
+ =item * create_workbook
+ Create an Excel worksheet.  If it fails, output message on the
+ request object and return undefs.
+ Inputs: Apache request object
+ Returns (undef) on failure,
+     Excel worksheet object, scalar with filename, and formats
+     from &Apache::loncommon::define_excel_formats on success
+ =cut
+ ###############################################################
+ ###############################################################
+ sub create_workbook {
+     my ($r) = @_;
+         #
+     # Create the excel spreadsheet
+     my $filename = '/prtspool/'.
+         $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
+         time.'_'.rand(1000000000).'.xls';
+     my $workbook  = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
+     if (! defined($workbook)) {
+         $r->log_error("Error creating excel spreadsheet $filename: $!");
+         $r->print('<p>'.&mt("Unable to create new Excel file.  ".
+                             "This error has been logged.  ".
+                             "Please alert your LON-CAPA administrator").
+                   '</p>');
+         return (undef);
+     }
+     #
+     $workbook->set_tempdir('/home/httpd/perl/tmp');
+     #
+     my $format = &Apache::loncommon::define_excel_formats($workbook);
+     return ($workbook,$filename,$format);
+ }
+ ###############################################################
+ ###############################################################
+ =pod
+ =item * create_text_file
+ Create a file to write to and eventually make available to the usre.
+ If file creation fails, outputs an error message on the request object and
+ return undefs.
+ Inputs: Apache request object, and file suffix
+ Returns (undef) on failure,
+     Filehandle and filename on success.
+ =cut
+ ###############################################################
+ ###############################################################
+ sub create_text_file {
+     my ($r,$suffix) = @_;
+     if (! defined($suffix)) { $suffix = 'txt'; };
+     my $fh;
+     my $filename = '/prtspool/'.
+         $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
+         time.'_'.rand(1000000000).'.'.$suffix;
+     $fh = Apache::File->new('>/home/httpd'.$filename);
+     if (! defined($fh)) {
+         $r->log_error("Couldn't open $filename for output $!");
+         $r->print("Problems occured in creating the output file.  ".
+                   "This error has been logged.  ".
+                   "Please alert your LON-CAPA administrator.");
+     }
+     return ($fh,$filename)
+ }
+ =pod
+ =back
  =cut
  ###############################################################
- Line 845  sub domain_select {
+ Line 1156  sub domain_select {
      } &get_domains;
      if ($multiple) {
  	$domains{''}=&mt('Any domain');
- 	return &multiple_select_form($name,$value,%domains);
+ 	return &multiple_select_form($name,$value,4,\%domains);
      } else {
  	return &select_form($name,$value,%domains);
      }
  }
+ #-------------------------------------------
+ =pod
+ =item * multiple_select_form($name,$value,$size,$hash,$order)
+ Returns a string containing a <select> element int multiple mode
+ Args:
+   $name - name of the <select> element
+   $value - sclara or array ref of values that should already be selected
+   $size - number of rows long the select element is
+   $hash - the elements should be 'option' => 'shown text'
+           (shown text should already have been &mt())
+   $order - (optional) array ref of the order to show the elments in
+ =cut
+ #-------------------------------------------
  sub multiple_select_form {
-     my ($name,$value,%hash)=@_;
+     my ($name,$value,$size,$hash,$order)=@_;
      my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
      my $output='';
-     my $size =(scalar keys %hash<4?scalar keys %hash:4);
+     if (! defined($size)) {
+         $size = 4;
+         if (scalar(keys(%$hash))<4) {
+             $size = scalar(keys(%$hash));
+         }
+     }
      $output.="\n<select name='$name' size='$size' multiple='1'>";
-     foreach (sort keys %hash) {
+     my @order = ref($order) ? @$order
-         $output.="<option name='$_'".
+                             : sort(keys(%$hash));
-             ($selected{$_}?' selected="1"' :'').">$hash{$_}</option>\n";
+     foreach my $key (@order) {
+         $output.='<option value="'.$key.'" ';
+         $output.='selected="selected" ' if ($selected{$key});
+         $output.='>'.$hash->{$key}."</option>\n";
      }
      $output.="</select>\n";
      return $output;
- Line 889  sub select_form {
+ Line 1228  sub select_form {
      }
      foreach (@keys) {
          $selectform.="<option value=\"$_\" ".
-             ($_ eq $def ? 'selected' : '').
+             ($_ eq $def ? 'selected="selected" ' : '').
                  ">".&mt($hash{$_})."</option>\n";
      }
      $selectform.="</select>";
- Line 926  sub select_level_form {
+ Line 1265  sub select_level_form {
      my $selectform = "<select name=\"$name\" size=\"1\">\n";
      for (my $i=0; $i<=18; $i++) {
          $selectform.="<option value=\"$i\" ".
-             ($i==$deflevel ? 'selected' : '').
+             ($i==$deflevel ? 'selected="selected" ' : '').
                  ">".&gradeleveldescription($i)."</option>\n";
      }
      $selectform.="</select>";
- Line 956  sub select_dom_form {
+ Line 1295  sub select_dom_form {
      my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
      foreach (@domains) {
          $selectdomain.="<option value=\"$_\" ".
-             ($_ eq $defdom ? 'selected' : '').
+             ($_ eq $defdom ? 'selected="selected" ' : '').
                  ">$_</option>\n";
      }
      $selectdomain.="</select>";
- Line 1055  Outputs:
+ Line 1394  Outputs:
  ###############################################################
  ###############################################################
  sub decode_user_agent {
+     my ($r)=@_;
      my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
      my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
      my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
+     if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
      my $clientbrowser='unknown';
      my $clientversion='0';
      my $clientmathml='';
- Line 1158  END
+ Line 1499  END
      }
      my $radioval = "'nochange'";
+     if (exists($in{'curr_authtype'}) &&
+         defined($in{'curr_authtype'}) &&
+         $in{'curr_authtype'} ne '') {
+         $radioval = "'$in{'curr_authtype'}arg'";
+     }
      my $argfield = 'null';
      if ( grep/^mode$/,(keys %in) ) {
          if ($in{'mode'} eq 'modifycourse')  {
- Line 1248  sub authform_nochange{
+ Line 1594  sub authform_nochange{
                kerb_def_dom => 'MSU.EDU',
                @_,
            );
-     my $result = &mt('[_1] Do not change login data',
+     my $result = '<label>'.&mt('[_1] Do not change login data',
                       '<input type="radio" name="login" value="nochange" '.
                       'checked="checked" onclick="'.
-             "javascript:changed_radio('nochange',$in{'formname'});".'" />');
+             "javascript:changed_radio('nochange',$in{'formname'});".'" />').
+ 	    '</label>';
      return $result;
  }
- Line 1283  sub authform_kerberos{
+ Line 1630  sub authform_kerberos{
      my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
      my $result .= &mt
          ('[_1] Kerberos authenticated with domain [_2] '.
-          '[_3] Version 4 [_4] Version 5',
+          '[_3] Version 4 [_4] Version 5 [_5]',
-          '<input type="radio" name="login" value="krb" '.
+          '<label><input type="radio" name="login" value="krb" '.
               'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
-          '<input type="text" size="10" name="krbarg" '.
+          '</label><input type="text" size="10" name="krbarg" '.
               'value="'.$krbarg.'" '.
               'onchange="'.$jscall.'" />',
-          '<input type="radio" name="krbver" value="4" '.$check4.' />',
+          '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
-          '<input type="radio" name="krbver" value="5" '.$check5.' />');
+          '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
+ 	 '</label>');
      return $result;
  }
- Line 1315  sub authform_internal{
+ Line 1663  sub authform_internal{
      my $jscall = "javascript:changed_radio('int',$args{'formname'});";
      my $result.=&mt
          ('[_1] Internally authenticated (with initial password [_2])',
-          '<input type="radio" name="login" value="int" '.$intcheck.
+          '<label><input type="radio" name="login" value="int" '.$intcheck.
               ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
-          '<input type="text" size="10" name="intarg" '.$intarg.
+          '</label><input type="text" size="10" name="intarg" '.$intarg.
               ' onchange="'.$jscall.'" />');
      return $result;
  }
- Line 1342  sub authform_local{
+ Line 1690  sub authform_local{
      my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
      my $result.=&mt('[_1] Local Authentication with argument [_2]',
-                     '<input type="radio" name="login" value="loc" '.$loccheck.
+                     '<label><input type="radio" name="login" value="loc" '.$loccheck.
                          ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
-                     '<input type="text" size="10" name="locarg" '.$locarg.
+                     '</label><input type="text" size="10" name="locarg" '.$locarg.
                          ' onchange="'.$jscall.'" />');
      return $result;
  }
- Line 1358  sub authform_filesystem{
+ Line 1706  sub authform_filesystem{
      my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
      my $result.= &mt
          ('[_1] Filesystem Authenticated (with initial password [_2])',
-          '<input type="radio" name="login" value="fsys" '.
+          '<label><input type="radio" name="login" value="fsys" '.
           'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
-          '<input type="text" size="10" name="fsysarg" value="" '.
+          '</label><input type="text" size="10" name="fsysarg" value="" '.
                    'onchange="'.$jscall.'" />');
      return $result;
  }
- Line 1567  sub get_related_words {
+ Line 1915  sub get_related_words {
  =over 4
- =item * plainname($uname,$udom)
+ =item * plainname($uname,$udom,$first)
  Takes a users logon name and returns it as a string in
  "first middle last generation" form
+ if $first is set to 'lastname' then it returns it as
+ 'lastname generation, firstname middlename' if their is a lastname
  =cut
  ###############################################################
  sub plainname {
-     my ($uname,$udom)=@_;
+     my ($uname,$udom,$first)=@_;
-     my %names=&Apache::lonnet::get('environment',
+     my %names=&getnames($uname,$udom);
-                     ['firstname','middlename','lastname','generation'],
+     my $name=&Apache::lonnet::format_name($names{'firstname'},
- 					 $udom,$uname);
+ 					  $names{'middlename'},
-     my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
+ 					  $names{'lastname'},
- 	$names{'lastname'}.' '.$names{'generation'};
+ 					  $names{'generation'},$first);
+     $name=~s/^\s+//;
      $name=~s/\s+$//;
      $name=~s/\s+/ /g;
+     if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
      return $name;
  }
- Line 1606  if the user does not
+ Line 1959  if the user does not
  sub nickname {
      my ($uname,$udom)=@_;
-     my %names=&Apache::lonnet::get('environment',
+     my %names=&getnames($uname,$udom);
-   ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
      my $name=$names{'nickname'};
      if ($name) {
         $name='&quot;'.$name.'&quot;';
- Line 1620  sub nickname {
+ Line 1972  sub nickname {
      return $name;
  }
+ sub getnames {
+     my ($uname,$udom)=@_;
+     my $id=$uname.':'.$udom;
+     my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
+     if ($cached) {
+ 	return %{$names};
+     } else {
+ 	my %loadnames=&Apache::lonnet::get('environment',
+                     ['firstname','middlename','lastname','generation','nickname'],
+ 					 $udom,$uname);
+ 	&Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
+ 	return %loadnames;
+     }
+ }
  # ------------------------------------------------------------------ Screenname
- Line 1633  Gets a users screenname and returns it a
+ Line 1999  Gets a users screenname and returns it a
  sub screenname {
      my ($uname,$udom)=@_;
-     my %names=
+     if ($uname eq $env{'user.name'} &&
-  &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
+ 	$udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
+     my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
      return $names{'screenname'};
  }
  # ------------------------------------------------------------- Message Wrapper
  sub messagewrapper {
-     my ($link,$un,$do)=@_;
+     my ($link,$username,$domain)=@_;
      return
- "<a href='/adm/email?compose=individual&recname=$un&recdom=$do'>$link</a>";
+         '<a href="/adm/email?compose=individual&'.
+         'recname='.$username.'&recdom='.$domain.'" '.
+         'title="'.&mt('Send message').'">'.$link.'</a>';
  }
  # --------------------------------------------------------------- Notes Wrapper
- Line 1656  sub noteswrapper {
+ Line 2026  sub noteswrapper {
  sub aboutmewrapper {
      my ($link,$username,$domain,$target)=@_;
-     return "<a href='/adm/$domain/$username/aboutme'".
+     return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
- 	($target?" target='$target'":'').">$link</a>";
+ 	($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
  }
  # ------------------------------------------------------------ Syllabus Wrapper
- Line 1668  sub syllabuswrapper {
+ Line 2038  sub syllabuswrapper {
      if ($fontcolor) {
          $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
      }
-     return "<a href='/public/$domain/$coursedir/syllabus'>$linktext</a>";
+     return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
+ }
+ sub track_student_link {
+     my ($linktext,$sname,$sdom,$target,$start) = @_;
+     my $link ="/adm/trackstudent?";
+     my $title = 'View recent activity';
+     if (defined($sname) && $sname !~ /^\s*$/ &&
+         defined($sdom)  && $sdom  !~ /^\s*$/) {
+         $link .= "selected_student=$sname:$sdom";
+         $title .= ' of this student';
+     }
+     if (defined($target) && $target !~ /^\s*$/) {
+         $target = qq{target="$target"};
+     } else {
+         $target = '';
+     }
+     if ($start) { $link.='&amp;start='.$start; }
+     return qq{<a href="$link" title="$title" $target>$linktext</a>};
  }
  =pod
- Line 1740  sub copyrightdescription {
+ Line 2128  sub copyrightdescription {
  =pod
+ =item * source_copyrightids()
+ returns list of all source copyrights
+ =cut
+ sub source_copyrightids {
+     return sort(keys(%scprtag));
+ }
+ =pod
+ =item * source_copyrightdescription()
+ returns description of a specified source copyright id
+ =cut
+ sub source_copyrightdescription {
+     return &mt($scprtag{shift(@_)});
+ }
+ =pod
  =item * filecategories()
  returns list of all file categories
- Line 1778  sub fileembstyle {
+ Line 2190  sub fileembstyle {
  sub filecategoryselect {
      my ($name,$value)=@_;
-     return &select_form($name,$value,
+     return &select_form($value,$name,
  			'' => &mt('Any category'),
  			map { $_,$_ } sort(keys(%category_extensions)));
  }
- Line 1792  returns description for a specified file
+ Line 2204  returns description for a specified file
  =cut
  sub filedescription {
-     return &mt($fd{lc(shift(@_))});
+     my $file_description = $fd{lc(shift())};
+     $file_description =~ s:([\[\]]):~$1:g;
+     return &mt($file_description);
  }
  =pod
- Line 1806  extra formatting
+ Line 2220  extra formatting
  sub filedescriptionex {
      my $ex=shift;
-     return '.'.$ex.' '.&mt($fd{lc($ex)});
+     my $file_description = $fd{lc($ex)};
+     $file_description =~ s:([\[\]]):~$1:g;
+     return '.'.$ex.' '.&mt($file_description);
  }
  # End of .tab access
- Line 1831  sub display_languages {
+ Line 2247  sub display_languages {
  	$languages{$_}=1;
      }
      &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
-     if ($ENV{'form.displaylanguage'}) {
+     if ($env{'form.displaylanguage'}) {
- 	foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
+ 	foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
  	    $languages{$_}=1;
          }
      }
- Line 1841  sub display_languages {
+ Line 2257  sub display_languages {
  sub preferred_languages {
      my @languages=();
-     if ($ENV{'environment.languages'}) {
+     if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
- 	@languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
-     }
-     if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
  	@languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
- 	         $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
+ 	         $env{'course.'.$env{'request.course.id'}.'.languages'}));
+     }
+     if ($env{'environment.languages'}) {
+ 	@languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
      }
      my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
      if ($browser) {
  	@languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
      }
-     if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
+     if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
  	@languages=(@languages,
- 		$Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
+ 		$Apache::lonnet::domain_lang_def{$env{'user.domain'}});
      }
-     if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
+     if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
  	@languages=(@languages,
- 		$Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
+ 		$Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
      }
      if ($Apache::lonnet::domain_lang_def{
  	                          $Apache::lonnet::perlvar{'lonDefDomain'}}) {
- Line 2027  show a snapshot of what student was look
+ Line 2443  show a snapshot of what student was look
  =cut
  sub get_student_view {
-   my ($symb,$username,$domain,$courseid,$target) = @_;
+   my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
    my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
-   my (%old,%moreenv);
+   my (%form);
    my @elements=('symb','courseid','domain','username');
    foreach my $element (@elements) {
-     $old{$element}=$ENV{'form.grade_'.$element};
+       $form{'grade_'.$element}=eval '$'.$element #'
-     $moreenv{'form.grade_'.$element}=eval '$'.$element #'
    }
-   if ($target eq 'tex') {$moreenv{'form.grade_target'} = 'tex';}
+   if (defined($moreenv)) {
-   &Apache::lonnet::appenv(%moreenv);
+       %form=(%form,%{$moreenv});
-   $feedurl=&Apache::lonnet::clutter($feedurl);
-   my $userview=&Apache::lonnet::ssi_body($feedurl);
-   &Apache::lonnet::delenv('form.grade_');
-   foreach my $element (@elements) {
-     $ENV{'form.grade_'.$element}=$old{$element};
    }
+   if (defined($target)) { $form{'grade_target'} = $target; }
+   $feedurl=&Apache::lonnet::clutter($feedurl);
+   my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
    $userview=~s/\<body[^\>]*\>//gi;
    $userview=~s/\<\/body\>//gi;
    $userview=~s/\<html\>//gi;
- Line 2065  show a snapshot of how student was answe
+ Line 2478  show a snapshot of how student was answe
  sub get_student_answers {
    my ($symb,$username,$domain,$courseid,%form) = @_;
    my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
-   my (%old,%moreenv);
+   my (%moreenv);
    my @elements=('symb','courseid','domain','username');
    foreach my $element (@elements) {
-     $old{$element}=$ENV{'form.grade_'.$element};
+     $moreenv{'grade_'.$element}=eval '$'.$element #'
-     $moreenv{'form.grade_'.$element}=eval '$'.$element #'
-   }
-   $moreenv{'form.grade_target'}='answer';
-   &Apache::lonnet::appenv(%moreenv);
-   my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%form);
-   &Apache::lonnet::delenv('form.grade_');
-   foreach my $element (@elements) {
-     $ENV{'form.grade_'.$element}=$old{$element};
    }
+   $moreenv{'grade_target'}='answer';
+   %moreenv=(%form,%moreenv);
+   my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
    return $userview;
  }
- Line 2085  sub get_student_answers {
+ Line 2493  sub get_student_answers {
  =item * &submlink()
- Inputs: $text $uname $udom $symb
+ Inputs: $text $uname $udom $symb $target
  Returns: A link to grades.pm such as to see the SUBM view of a student
- Line 2093  Returns: A link to grades.pm such as to
+ Line 2501  Returns: A link to grades.pm such as to
  ###############################################
  sub submlink {
-     my ($text,$uname,$udom,$symb)=@_;
+     my ($text,$uname,$udom,$symb,$target)=@_;
+     if (!($uname && $udom)) {
+ 	(my $cursymb, my $courseid,$udom,$uname)=
+ 	    &Apache::lonxml::whichuser($symb);
+ 	if (!$symb) { $symb=$cursymb; }
+     }
+     if (!$symb) { $symb=&Apache::lonnet::symbread(); }
+     $symb=&Apache::lonnet::escape($symb);
+     if ($target) { $target="target=\"$target\""; }
+     return '<a href="/adm/grades?&command=submission&'.
+ 	'symb='.$symb.'&student='.$uname.
+ 	'&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
+ }
+ ##############################################
+ =pod
+ =item * &pgrdlink()
+ Inputs: $text $uname $udom $symb $target
+ Returns: A link to grades.pm such as to see the PGRD view of a student
+ =cut
+ ###############################################
+ sub pgrdlink {
+     my $link=&submlink(@_);
+     $link=~s/(&command=submission)/$1&showgrading=yes/;
+     return $link;
+ }
+ ##############################################
+ =pod
+ =item * &pprmlink()
+ Inputs: $text $uname $udom $symb $target
+ Returns: A link to parmset.pm such as to see the PPRM view of a
+ student and a specific resource
+ =cut
+ ###############################################
+ sub pprmlink {
+     my ($text,$uname,$udom,$symb,$target)=@_;
      if (!($uname && $udom)) {
  	(my $cursymb, my $courseid,$udom,$uname)=
  	    &Apache::lonxml::whichuser($symb);
  	if (!$symb) { $symb=$cursymb; }
      }
-     if (!$symb) { $symb=&symbread(); }
+     if (!$symb) { $symb=&Apache::lonnet::symbread(); }
-     return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
+     $symb=&Apache::lonnet::escape($symb);
- 	'&userdom='.$udom.'&command=submission">'.$text.'</a>';
+     if ($target) { $target="target=\"$target\""; }
+     return '<a href="/adm/parmset?&command=set&'.
+ 	'symb='.$symb.'&uname='.$uname.
+ 	'&udom='.$udom.'" '.$target.'>'.$text.'</a>';
  }
  ##############################################
- Line 2131  sub maketime {
+ Line 2588  sub maketime {
      my %th=@_;
      return POSIX::mktime(
          ($th{'seconds'},$th{'minutes'},$th{'hours'},
-          $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
+          $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
  }
  #########################################
- Line 2139  sub maketime {
+ Line 2596  sub maketime {
  sub findallcourses {
      my %courses=();
      my $now=time;
-     foreach (keys %ENV) {
+     foreach (keys %env) {
  	if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
- 	    my ($starttime,$endtime)=$ENV{$_};
+ 	    my ($starttime,$endtime)=$env{$_};
              my $active=1;
              if ($starttime) {
  		if ($now<$starttime) { $active=0; }
- Line 2178  sub determinedomain {
+ Line 2635  sub determinedomain {
     if (! $domain) {
          # Determine domain if we have not been given one
          $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
-         if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
+         if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
-         if ($ENV{'request.role.domain'}) {
+         if ($env{'request.role.domain'}) {
-             $domain=$ENV{'request.role.domain'};
+             $domain=$env{'request.role.domain'};
          }
      }
      return $domain;
- Line 2202  sub domainlogo {
+ Line 2659  sub domainlogo {
      my $domain = &determinedomain(shift);
       # See if there is a logo
      if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
- 	my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
+ 	my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
- 	if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
+         return '<img src="'.$logo.'" alt="'.$domain.'" />';
-         return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
- 	    '/adm/lonDomLogos/'.$domain.'.gif" alt="'.$domain.'" />';
      } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
          return $Apache::lonnet::domaindescription{$domain};
      } else {
- Line 2227  Returns: value of designparamter $which
+ Line 2682  Returns: value of designparamter $which
  ##############################################
  sub designparm {
      my ($which,$domain)=@_;
-     if ($ENV{'browser.blackwhite'} eq 'on') {
+     if ($env{'browser.blackwhite'} eq 'on') {
  	if ($which=~/\.(font|alink|vlink|link)$/) {
  	    return '#000000';
  	}
- Line 2238  sub designparm {
+ Line 2693  sub designparm {
  	    return '#CCCCCC';
  	}
      }
-     if ($ENV{'environment.color.'.$which}) {
+     if ($env{'environment.color.'.$which}) {
- 	return $ENV{'environment.color.'.$which};
+ 	return $env{'environment.color.'.$which};
      }
      $domain=&determinedomain($domain);
      if ($designhash{$domain.'.'.$which}) {
- Line 2281  Inputs:
+ Line 2736  Inputs:
  =item * $forcereg, if page should register as content page (relevant for
              text interface only)
+ =item * $customtitle, alternate text to use instead of $title
+                       in the title box that appears, this text
+                       is not auto translated like the $title is
+ =item * $notopbar, if true, keep the 'what is this' info but remove the
+                    navigational links
+ =item * $bgcolor, used to override the bg coor on a webpage to a specific value
  =back
  Returns: A uniform header for LON-CAPA web pages.
- Line 2291  other decorations will be returned.
+ Line 2755  other decorations will be returned.
  =cut
  sub bodytag {
-     my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
+     my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,
+ 	$notopbar,$bgcolor)=@_;
      $title=&mt($title);
-     unless ($function) {
+     $function = &get_users_function() if (!$function);
- 	$function='student';
-         if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
- 	    $function='coordinator';
-         }
- 	if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
-             $function='admin';
-         }
-         if (($ENV{'request.role'}=~/^(au|ca)/) ||
-             ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
-             $function='author';
-         }
-     }
      my $img=&designparm($function.'.img',$domain);
-     my $pgbg=&designparm($function.'.pgbg',$domain);
+     my $pgbg= $bgcolor || &designparm($function.'.pgbg',$domain);
      my $tabbg=&designparm($function.'.tabbg',$domain);
      my $font=&designparm($function.'.font',$domain);
      my $link=&designparm($function.'.link',$domain);
- Line 2315  sub bodytag {
+ Line 2768  sub bodytag {
      my $vlink=&designparm($function.'.vlink',$domain);
      my $sidebg=&designparm($function.'.sidebg',$domain);
  # Accessibility font enhance
-     unless ($addentries) { $addentries=''; }
      my $addstyle='';
-     if ($ENV{'browser.fontenhance'} eq 'on') {
+     if ($env{'browser.fontenhance'} eq 'on') {
  	$addstyle=' font-size: x-large;';
      }
   # role and realm
      my ($role,$realm)
-        =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
+        =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
  # realm
-     if ($ENV{'request.course.id'}) {
+     if ($env{'request.course.id'}) {
  	$realm=
-          $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
+          $env{'course.'.$env{'request.course.id'}.'.description'};
      }
      unless ($realm) { $realm='&nbsp;'; }
  # Set messages
- Line 2334  sub bodytag {
+ Line 2786  sub bodytag {
  # Port for miniserver
      my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
      if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
+     my $extra_body_attr;
+     if ($forcereg) {
+ 	if (ref($addentries)) {
+ 	    $addentries->{'onload'}   = &Apache::lonmenu::loadevents().
+ 		$addentries->{'onload'};
+ 	    $addentries->{'onunload'} = &Apache::lonmenu::unloadevents().
+ 		$addentries->{'onunload'};
+ 	} else {
+ 	    $extra_body_attr.=' onload="'.&Apache::lonmenu::loadevents().
+ 		'" onunload="'.&Apache::lonmenu::unloadevents().'"';
+ 	}
+     }
+     if (!ref($addentries)) {
+ 	$extra_body_attr .= $addentries;
+     } else {
+ 	foreach my $attr (keys(%$addentries)) {
+ 	    $extra_body_attr .= " $attr=\"".$addentries->{$attr}.'" ';
+ 	}
+     }
  # construct main body tag
      my $bodytag = <<END;
- <style>
+ <style type="text/css">
  h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
  a:focus { color: red; background: yellow }
+ table.thinborder { border-collapse: collapse; }
+ table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
+ form, .inline { display: inline; }
+ .center { text-align: center; }
+ .filename {font-family: monospace;}
  </style>
  <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
- style="margin-top: 0px;$addstyle" $addentries>
+ style="margin-top: 0px;$addstyle" $extra_body_attr>
  END
+     &Apache::lontexconvert::jsMath_reset();
+     if ($env{'environment.texengine'} eq 'jsMath' ||
+ 	$env{'form.texengine'}        eq 'jsMath' ) {
+ 	$bodytag.=&Apache::lontexconvert::jsMath_header();
+     }
      my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
                     $lonhttpdPort.$img.'" alt="'.$function.'" />';
      if ($bodyonly) {
          return $bodytag;
-     } elsif ($ENV{'browser.interface'} eq 'textual') {
+     } elsif ($env{'browser.interface'} eq 'textual') {
  # Accessibility
          return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
                                                        $forcereg).
                 '<h1>LON-CAPA: '.$title.'</h1>';
-     } elsif ($ENV{'environment.remote'} eq 'off') {
+     } elsif ($env{'environment.remote'} eq 'off') {
  # No Remote
-         return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
+ 	my $roleinfo=(<<ENDROLE);
-                                                       $forcereg).
+ <td bgcolor="$tabbg" align="right">
-       '<table bgcolor="'.$pgbg.'" width="100%" border="0" cellspacing="3" cellpadding="3"><tr><td bgcolor="'.$tabbg.'"><font face="Arial, Helvetica, sans-serif" size="+3" color="'.$font.'"><b>'.$title.
+ <font size="2" face="Arial, Helvetica, sans-serif">
- '</b></font></td></tr></table>';
+     $env{'environment.firstname'}
+     $env{'environment.middlename'}
+     $env{'environment.lastname'}
+     $env{'environment.generation'}
+     </font>&nbsp;
+ <br />
+ <font size="2" face="Arial, Helvetica, sans-serif">$role</font>&nbsp;
+ <br />
+ <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>&nbsp;
+ </td>
+ ENDROLE
+         my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
+ 		$font.'"><b>'.$title.'</b></font>';
+         if ($customtitle) {
+             $titleinfo = $customtitle;
+         }
+ 	if ($env{'request.state'} eq 'construct') {
+ 	    my ($uname,$thisdisfn)=
+ 		($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
+ 	    my $formaction='/priv/'.$uname.'/'.$thisdisfn;
+ 	    $formaction=~s/\/+/\//g;
+             unless ($customtitle) {  #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
+                 my $parentpath = '';
+                 my $lastitem = '';
+                 if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
+                     $parentpath = $1;
+                     $lastitem = $2;
+                 } else {
+                     $lastitem = $thisdisfn;
+                 }
+ 	        $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
+                       '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font>&nbsp;'.
+                       '<form name="dirs" method="post" action="'.$formaction
+ 		    .'" target="_top"><tt><b>'
+ 		    .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
+ 		    .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
+ 		    .'</form>'
+ 		    .&Apache::lonmenu::constspaceform();
+             }
+ 	    $forcereg=1;
+         }
+         my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
+                          'cellspacing="3" cellpadding="3">'.
+                          '<tr><td bgcolor="'.$tabbg.'">'.
+                          $titleinfo.'</td>'.$roleinfo.'</tr></table>';
+         if ($env{'request.state'} eq 'construct') {
+             if ($notopbar) {
+                 $bodytag .= $titletable;
+             } else {
+                 $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
+             }
+ 	} else {
+             if ($notopbar) {
+                 $bodytag .= $titletable;
+             } else {
+                 $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
+                         $titletable;
+             }
+         }
+         return $bodytag;
      }
  #
  # Top frame rendering, Remote is up
  #
+     my $titleinfo = '&nbsp;<font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
+     if ($customtitle) {
+         $titleinfo = $customtitle;
+     }
+     #
+     # Extra info if you are the DC
+     my $dc_info = '';
+     if ($env{'user.adv'} && exists($env{'user.role.dc./'.
+                         $env{'course.'.$env{'request.course.id'}.
+                                  '.domain'}.'/'})) {
+         my $cid = $env{'request.course.id'};
+         $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
+         $dc_info = '('.$dc_info.')';
+     }
+     # Explicit link to get inline menu
+     my $menu='<br /><font size="2" face="Arial, Helvetica, sans-serif">&nbsp;<a href="/adm/remote?action=collapse">'.&mt('Switch to Inline Menu Mode').'</a></font>';
+     #
      return(<<ENDBODY);
  $bodytag
  <table width="100%" cellspacing="0" border="0" cellpadding="0">
- Line 2372  $upperleft</td>
+ Line 2934  $upperleft</td>
  </tr>
  <tr>
  <td rowspan="3" bgcolor="$tabbg">
- &nbsp;<font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
+ $titleinfo $dc_info $menu
- <td bgcolor="$tabbg" align="right">
+ </td><td bgcolor="$tabbg" align="right">
  <font size="2" face="Arial, Helvetica, sans-serif">
-     $ENV{'environment.firstname'}
+     $env{'environment.firstname'}
-     $ENV{'environment.middlename'}
+     $env{'environment.middlename'}
-     $ENV{'environment.lastname'}
+     $env{'environment.lastname'}
-     $ENV{'environment.generation'}
+     $env{'environment.generation'}
      </font>&nbsp;
  </td>
  </tr>
- Line 2387  $upperleft</td>
+ Line 2949  $upperleft</td>
  </td></tr>
  <tr>
  <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font>&nbsp;</td></tr>
- </table><br>
+ </table><br />
  ENDBODY
  }
  ###############################################
+ ###############################################
+ =pod
+ =back
+ =head1 HTML Helpers
+ =over 4
+ =item * &endbodytag()
+ Returns a uniform footer for LON-CAPA web pages.
+ Inputs: none
+ =back
+ =cut
+ sub endbodytag {
+     my $endbodytag='</body>';
+     $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
+     if ( exists( $env{'internal.head.redirect'} ) ) {
+ 	$endbodytag=
+ 	    "<br /><a href=\"$env{'internal.head.redirect'}\">".
+ 	    &mt('Continue').'</a>'.
+ 	    $endbodytag;
+     }
+     return $endbodytag;
+ }
+ =pod
+ =over 4
+ =item * &headtag()
+ Returns a uniform footer for LON-CAPA web pages.
+ Inputs: $title - optional title for the head
+         $head_extra - optional extra HTML to put inside the <head>
+         $args - optional arguments
+             force_register - if is true call registerurl so the remote is
+                              informed
+             redirect - array ref of seconds before redirect occurs
+                                     url to redirect to
+                            (side effect of setting
+                                $env{'internal.head.redirect'} to the url
+                                redirected too)
+ =back
+ =cut
+ sub headtag {
+     my ($title,$head_extra,$args) = @_;
+     my $result =
+ 	'<head>'.
+ 	&Apache::lonxml::fontsettings().
+ 	&Apache::lonhtmlcommon::htmlareaheaders();
+     if ($args->{'force_register'}) {
+ 	$result .= &Apache::lonmenu::registerurl(1);
+     }
+     if (ref($args->{'redirect'})) {
+ 	my ($time,$url) = @{$args->{'redirect'}};
+ 	$url = &Apache::lonenc::check_encrypt($url);
+ 	$env{'internal.head.redirect'} = $url;
+ 	$result.=<<ADDMETA
+ <meta http-equiv="pragma" content="no-cache" />
+ <meta HTTP-EQUIV="Refresh" CONTENT="$time; url=$url" />
+ ADDMETA
+     }
+     if (!defined($title)) {
+ 	$title = 'The LearningOnline Network with CAPA';
+     }
+     $result .= '<title> LON-CAPA '.&mt($title).'</title>'.$head_extra;
+     return $result;
+ }
+ =pod
+ =over 4
+ =item * &endheadtag()
+ Returns a uniform </head> for LON-CAPA web pages.
+ Inputs: none
+ =back
+ =cut
+ sub endheadtag {
+     return '</head>';
+ }
+ =pod
+ =over 4
+ =item * &head()
+ Returns a uniform complete <head>..</head> section for LON-CAPA web pages.
+ Inputs: $title - optional title for the page
+         $head_extra - optional extra HTML to put inside the <head>
+ =back
+ =cut
+ sub head {
+     my ($title,$head_extra,$args) = @_;
+     return &headtag($title,$head_extra,$args).&endheadtag();
+ }
+ =pod
+ =over 4
+ =item * &start_page()
+ Returns a complete <html> .. <body> section for LON-CAPA web pages.
+ Inputs: $title - optional title for the page
+         $head_extra - optional extra HTML to incude inside the <head>
+         $args - additional optional args supported are:
+                   only_body      -> is true will set &bodytag() onlybodytag
+                                     arg on
+                   no_nav_bar     -> is true will set &bodytag() notopbar arg on
+                   add_entries    -> additional attributes to add to the  <body>
+                   domain         -> force to color decorate a page for a
+                                     specific domain
+                   function       -> force usage of a specific rolish color
+                                     scheme
+                   redirect       -> see &headtag()
+                   bgcolor        -> override the default page bg color
+                   js_ready       -> return a string ready for being used in
+                                     a javascript writeln
+                   html_encode    -> return a string ready for being used in
+                                     a html attribute
+                   force_register -> if is true will turn on the &bodytag()
+                                     $forcereg arg
+                   body_title     -> alternate text to use instead of $title
+                                     in the title box that appears, this text
+                                     is not auto translated like the $title is
+ =back
+ =cut
+ sub start_page {
+     my ($title,$head_extra,$args) = @_;
+     #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
+     my %head_args;
+     foreach my $arg ('redirect','force_register') {
+ 	if (defined($args->{$arg})) {
+ 	    $head_args{$arg} = $args->{$arg};
+ 	}
+     }
+     $env{'internal.start_page'}++;
+     my $result =
+ 	&Apache::lonxml::xmlbegin().
+ 	&headtag($title,$head_extra,\%head_args).&endheadtag().
+ 	&bodytag($title,
+ 		 $args->{'function'},       $args->{'add_entries'},
+ 		 $args->{'only_body'},      $args->{'domain'},
+ 		 $args->{'force_register'}, $args->{'body_title'},
+ 		 $args->{'no_nav_bar'},     $args->{'bgcolor'});
+     if ($args->{'js_ready'}) {
+ 	$result = &js_ready($result);
+     }
+     if ($args->{'html_encode'}) {
+ 	$result = &html_encode($result);
+     }
+     return $result;
+ }
+ =pod
+ =over 4
+ =item * &head()
+ Returns a complete </body></html> section for LON-CAPA web pages.
+ Inputs:         $args - additional optional args supported are:
+                  js_ready     -> return a string ready for being used in
+                                  a javascript writeln
+                  html_encode  -> return a string ready for being used in
+                                  a html attribute
+ =back
+ =cut
+ sub end_page {
+     my ($args) = @_;
+     #&Apache::lonnet::logthis("end_page ".join(':',caller(0)));
+     $env{'internal.end_page'}++;
+     my $result = &endbodytag()."\n</html>";
+     if ($args->{'js_ready'}) {
+ 	$result = &js_ready($result);
+     }
+     if ($args->{'html_encode'}) {
+ 	$result = &html_encode($result);
+     }
+     return $result;
+ }
+ sub html_encode {
+     my ($result) = @_;
+     $result = &HTML::Entities::encode($result,'<>&"');
+     return $result;
+ }
+ sub js_ready {
+     my ($result) = @_;
+     $result =~ s/[\n\r]/ /xmsg;
+     $result =~ s/\\/\\\\/xmsg;
+     $result =~ s/'/\\'/xmsg;
+     $result =~ s{</script>}{</scrip'+'t>}xmsg;
+     return $result;
+ }
+ sub validate_page {
+     if (  exists($env{'internal.start_page'})
+ 	  &&     $env{'internal.start_page'} > 1) {
+ 	&Apache::lonnet::logthis('start_page called multiple times '.
+ 				 $env{'internal.start_page'}.' '.
+ 				 $ENV{'request.filename'});
+     }
+     if (  exists($env{'internal.end_page'})
+ 	  &&     $env{'internal.end_page'} > 1) {
+ 	&Apache::lonnet::logthis('end_page called multiple times '.
+ 				 $env{'internal.end_page'}.' '.
+ 				 $env{'request.filename'});
+     }
+     if (     exists($env{'internal.start_page'})
+ 	&& ! exists($env{'internal.end_page'})) {
+ 	&Apache::lonnet::logthis('start_page called without end_page '.
+ 				 $env{'request.filename'});
+     }
+     if (   ! exists($env{'internal.start_page'})
+ 	&&   exists($env{'internal.end_page'})) {
+ 	&Apache::lonnet::logthis('end_page called without start_page'.
+ 				 $env{'request.filename'});
+     }
+ }
+ sub simple_error_page {
+     my ($r,$title,$msg) = @_;
+     my $page =
+ 	&Apache::loncommon::start_page($title).
+ 	&mt($msg).
+ 	&Apache::loncommon::end_page();
+     if (ref($r)) {
+ 	$r->print($page);
+ 	return;
+     }
+     return $page;
+ }
+ ###############################################
+ =pod
+ =over 4
+ =item get_users_function
+ Used by &bodytag to determine the current users primary role.
+ Returns either 'student','coordinator','admin', or 'author'.
+ =cut
+ ###############################################
+ sub get_users_function {
+     my $function = 'student';
+     if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
+         $function='coordinator';
+     }
+     if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
+         $function='admin';
+     }
+     if (($env{'request.role'}=~/^(au|ca)/) ||
+         ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
+         $function='author';
+     }
+     return $function;
+ }
+ ###############################################
+ =pod
+ =item check_user_status
+ Determines current status of supplied role for a
+ specific user. Roles can be active, previous or future.
+ Inputs:
+ user's domain, user's username, course's domain,
+ course's number, optional section/group.
+ Outputs:
+ role status: active, previous or future.
+ =cut
+ sub check_user_status {
+     my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
+     my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
+     my @uroles = keys %userinfo;
+     my $srchstr;
+     my $active_chk = 'none';
+     if (@uroles > 0) {
+         if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
+             $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
+         } else {
+             $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role;         }
+         if (grep/^$srchstr$/,@uroles) {
+             my $role_end = 0;
+             my $role_start = 0;
+             $active_chk = 'active';
+             if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
+                 $role_end = $2;
+                 if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
+                     $role_start = $3;
+                 }
+             }
+             if ($role_start > 0) {
+                 if (time < $role_start) {
+                     $active_chk = 'future';
+                 }
+             }
+             if ($role_end > 0) {
+                 if (time > $role_end) {
+                     $active_chk = 'previous';
+                 }
+             }
+         }
+     }
+     return $active_chk;
+ }
+ ###############################################
+ =pod
+ =item get_sections
+ Determines all the sections for a course including
+ sections with students and sections containing other roles.
+ Incoming parameters: domain, course number, reference to
+ section hash (keys to be section/group IDs), reference to
+ array containing roles for which sections should be gathered
+ (optional). If the fourth argument is undefined, sections
+ are gathered for any role.
+ Returns number of sections.
+ =cut
+ ###############################################
+ sub get_sections {
+     my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
+     if (!($cdom && $cnum)) { return 0; }
+     my $numsections = 0;
+     if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
+ 	my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
+ 	my $sec_index = &Apache::loncoursedata::CL_SECTION();
+ 	my $status_index = &Apache::loncoursedata::CL_STATUS();
+ 	while (my ($student,$data) = each %$classlist) {
+ 	    my ($section,$status) = ($data->[$sec_index],
+ 				     $data->[$status_index]);
+ 	    unless ($section eq '-1' || $section =~ /^\s*$/) {
+ 		if (!defined($$sectioncount{$section})) { $numsections++; }
+ 		$$sectioncount{$section}++;
+ 	    }
+ 	}
+     }
+     my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
+     foreach my $user (sort(keys(%courseroles))) {
+ 	if ($user !~ /^(\w{2})/) { next; }
+ 	my ($role) = ($user =~ /^(\w{2})/);
+ 	if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
+ 	my $section;
+ 	if ($role eq 'cr' &&
+ 	    $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
+ 	    $section=$1;
+ 	}
+ 	if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
+ 	if (!defined($section) || $section eq '-1') { next; }
+ 	if (!defined($$sectioncount{$section})) { $numsections++; }
+ 	$$sectioncount{$section}++;
+     }
+     return $numsections;
+ }
+ ###############################################
+ =pod
+ =item coursegroups
+ Retrieve information about groups in a course,
+ Input:
+. Reference to hash to populate with group information.
+. Optional course domain
+. Optional course number
+. Optional group name
+ Course domain and number will be taken from user's
+ environment if not supplied. Optional group name will'
+ be passed to lonnet::get_coursegroups() as a regexp to
+ use in the call to the dump function.
+ Output
+ Returns number of groups in the course (subject to the
+ optional group name filter).
+ Side effects:
+ Populates the referenced curr_groups hash, with key,
+ value pairs. Keys are group names, corresponding values
+ are scalars containing group information in XML. This
+ can be sent to &get_group_settings() to be parsed.
+ =cut
+ ###############################################
+ sub coursegroups {
+     my ($curr_groups,$cdom,$cnum,$group) = @_;
+     my $numgroups;
+     if (!defined($cdom) || !defined($cnum)) {
+         my $cid =  $env{'request.course.id'};
+         $cdom = $env{'course.'.$cid.'.domain'};
+         $cnum = $env{'course.'.$cid.'.num'};
+     }
+     %{$curr_groups} = &Apache::lonnet::get_coursegroups($cdom,$cnum,$group);
+     my ($tmp) = keys(%{$curr_groups});
+     if ($tmp=~/^error:/) {
+         unless ($tmp eq 'error: 2 tie(GDBM) Failed while attempting dump') {
+             &logthis('Error retrieving groups: '.$tmp.' in '.$cnum.':'.
+                                                                    $cdom);
+         }
+         $numgroups = 0;
+     } else {
+         $numgroups = keys(%{$curr_groups});
+     }
+     return $numgroups;
+ }
+ ###############################################
+ =pod
+ =item get_group_settings
+ Uses TokeParser to extract group information from the
+ XML used to describe course groups.
+ Input:
+ Scalar containing XML  - as retrieved from &coursegroups().
+ Output:
+ Hash containing group information as key=values for (a), and
+ hash of hashes for (b)
+ Keys (in two categories):
+ (a) groupname, creator, creation, modified, startdate,enddate.
+ Corresponding values are name of the group, creator of the group
+ (username:domain), UNIX time for date group was created, and
+ settings were last modified, and default start and end access
+ times for group members.
+ (b) functions returned in hash of hashes.
+ Outer hash key is functions.
+ Inner hash keys are chat,discussion,email,files,homepage,roster.
+ Corresponding values are either on or off, depending on
+ whether this type of functionality is available for the group.
+ =cut
+ ###############################################
+ sub get_group_settings {
+     my ($groupinfo)=@_;
+     my $parser=HTML::TokeParser->new(\$groupinfo);
+     my $token;
+     my $tool = '';
+     my $role = '';
+     my %content=();
+     while ($token=$parser->get_token) {
+         if ($token->[0] eq 'S')  {
+             my $entry=$token->[1];
+             if ($entry eq 'functions' || $entry eq 'autosec') {
+                 %{$content{$entry}} = ();
+                 $tool = $entry;
+             } elsif ($entry eq 'role') {
+                 if ($tool eq 'autosec') {
+                     $role = $token->[2]{id};
+                 }
+             } else {
+                 my $value=$parser->get_text('/'.$entry);
+                 if ($entry eq 'name') {
+                     if ($tool eq 'functions') {
+                         my $function = $token->[2]{id};
+                         $content{$tool}{$function} = $value;
+                     }
+                 } elsif ($entry eq 'groupname') {
+                     $content{$entry}=&Apache::lonnet::unescape($value);
+                 } elsif (($entry eq 'roles') || ($entry eq 'types') ||
+                          ($entry eq 'sectionpick') || ($entry eq 'defpriv')) {
+                     push(@{$content{$entry}},$value);
+                 } elsif ($entry eq 'section') {
+                     if ($tool eq 'autosec'  && $role ne '') {
+                         push(@{$content{$tool}{$role}},$value);
+                     }
+                 } else {
+                     $content{$entry}=$value;
+                 }
+             }
+         } elsif ($token->[0] eq 'E') {
+             if ($token->[1] eq 'functions' || $token->[1] eq 'autosec') {
+                 $tool = '';
+             } elsif ($token->[1] eq 'role') {
+                 $role = '';
+             }
+         }
+     }
+     return %content;
+ }
+ sub check_group_access {
+     my ($group) = @_;
+     my $access = 1;
+     my $now = time;
+     my ($start,$end) = split(/\./,$env{'user.role.gr/'.$env{'request.course,id'}.'/'.$group});
+     if (($end!=0) && ($end<$now)) { $access = 0; }
+     if (($start!=0) && ($start>$now)) { $access=0; }
+     return $access;
+ }
+ ###############################################
+ =pod
+ =item get_course_users
+ Retrieves usernames:domains for users in the specified course
+ with specific role(s), and access status.
+ Incoming parameters:
+. course domain
+. course number
+. access status: users must have - either active,
+ previous, future, or all.
+. reference to array of permissible roles
+. reference to array of section restrictions (optional)
+. reference to results object (hash of hashes).
+. reference to optional userdata hash
+ Keys of top level hash are roles.
+ Keys of inner hashes are username:domain, with
+ values set to access type.
+ Optional userdata hash returns an array with arguments in the
+ same order as loncoursedata::get_classlist() for student data.
+ Entries for end, start, section and status are blank because
+ of the possibility of multiple values for non-student roles.
+ =cut
+ ###############################################
+ sub get_course_users {
+     my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
+     my %idx = ();
+     $idx{udom} = &Apache::loncoursedata::CL_SDOM();
+     $idx{uname} =  &Apache::loncoursedata::CL_SNAME();
+     $idx{end} = &Apache::loncoursedata::CL_END();
+     $idx{start} = &Apache::loncoursedata::CL_START();
+     $idx{id} = &Apache::loncoursedata::CL_ID();
+     $idx{section} = &Apache::loncoursedata::CL_SECTION();
+     $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
+     $idx{status} = &Apache::loncoursedata::CL_STATUS();
+     if (grep(/^st$/,@{$roles})) {
+         my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
+         my $now = time;
+         foreach my $student (keys(%{$classlist})) {
+             my $match = 0;
+             if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
+ 		unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
+ 			    @{$sections})) {
+ 		    next;
+ 		}
+             }
+             if (defined($$types{'active'})) {
+                 if ($$classlist{$student}[$idx{status}] eq 'Active') {
+                     push(@{$$users{st}{$student}},'active');
+                     $match = 1;
+                 }
+             }
+             if (defined($$types{'previous'})) {
+                 if ($$classlist{$student}[$idx{end}] <= $now) {
+                     push(@{$$users{st}{$student}},'previous');
+                     $match = 1;
+                 }
+             }
+             if (defined($$types{'future'})) {
+                 if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
+                     push(@{$$users{st}{$student}},'future');
+                     $match = 1;
+                 }
+             }
+             if ($match && defined($userdata)) {
+                 $$userdata{$student} = $$classlist{$student};
+             }
+         }
+     }
+     if ((@{$roles} > 0) && (@{$roles} ne "st")) {
+         my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
+         foreach my $person (@coursepersonnel) {
+             my $match = 0;
+             my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
+             $user =~ s/:$//;
+             if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
+                 my ($uname,$udom,$usec) = split(/:/,$user);
+                 if ($usec ne '' && (ref($sections) eq 'ARRAY') &&
+ 		    @{$sections} > 0) {
+ 		    unless(grep(/^\Q$usec\E$/,@{$sections})) {
+ 			next;
+ 		    }
+                 }
+                 if ($uname ne '' && $udom ne '') {
+                     my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
+                     foreach my $type (keys(%{$types})) {
+                         if ($status eq $type) {
+                             @{$$users{$role}{$user}} = $type;
+                             $match = 1;
+                         }
+                     }
+                     if ($match && defined($userdata) &&
+                         !exists($$userdata{$uname.':'.$udom})) {
+ 			&get_user_info($udom,$uname,\%idx,$userdata);
+                     }
+                 }
+             }
+         }
+         if (grep(/^ow$/,@{$roles})) {
+             if ((defined($cdom)) && (defined($cnum))) {
+                 my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
+                 if ( defined($csettings{'internal.courseowner'}) ) {
+                     my $owner = $csettings{'internal.courseowner'};
+                     @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
+                     if (defined($userdata) &&
+ 			!exists($$userdata{$owner.':'.$cdom})) {
+ 			&get_user_info($cdom,$owner,\%idx,$userdata);
+ 		    }
+                 }
+             }
+         }
+     }
+     return;
+ }
+ sub get_user_info {
+     my ($udom,$uname,$idx,$userdata) = @_;
+     $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
+ 	&plainname($uname,$udom,'lastname');
+     $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
+     $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
+     return;
+ }
+ ###############################################
  sub get_posted_cgi {
      my $r=shift;
      my $buffer;
+     if ($r->header_in('Content-length')) {
-     $r->read($buffer,$r->header_in('Content-length'),0);
+ 	$r->read($buffer,$r->header_in('Content-length'),0);
+     }
      unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
  	my @pairs=split(/&/,$buffer);
  	my $pair;
- Line 2423  sub get_posted_cgi {
+ Line 3675  sub get_posted_cgi {
  		if ($name) {
  		    chomp($value);
  		    if ($fname) {
- 			$ENV{"form.$name.filename"}=$fname;
+ 			$env{"form.$name.filename"}=$fname;
- 			$ENV{"form.$name.mimetype"}=$fmime;
+ 			$env{"form.$name.mimetype"}=$fmime;
  		    } else {
  			$value=~s/\s+$//s;
  		    }
- Line 2456  sub get_posted_cgi {
+ Line 3708  sub get_posted_cgi {
  	    }
  	}
      }
-     $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
+ #
-     $r->method_number(M_GET);
+ # Digested POSTed values
+ #
+ # Remember the way this was originally done (GET or POST)
+ #
+     $env{'request.method'}=$ENV{'REQUEST_METHOD'};
+ #
+ # There may also be stuff in the query string
+ # Tell subsequent handlers that this was GET, not POST, so they can access query string.
+ # Also, unset POSTed content length to cover all tracks.
+ #
+ # This does not work, because M_GET is not defined (if it's defined, it is just 0).
+ # Commenting out for now ... not sure if harm is done.
+ #    $r->method_number(M_GET);
      $r->method('GET');
      $r->headers_in->unset('Content-length');
  }
- Line 2466  sub get_posted_cgi {
+ Line 3732  sub get_posted_cgi {
  =item * get_unprocessed_cgi($query,$possible_names)
- Modify the %ENV hash to contain unprocessed CGI form parameters held in
+ Modify the %env hash to contain unprocessed CGI form parameters held in
  $query.  The parameters listed in $possible_names (an array reference),
- will be set in $ENV{'form.name'} if they do not already exist.
+ will be set in $env{'form.name'} if they do not already exist.
  Typically called with $ENV{'QUERY_STRING'} as the first parameter.
  $possible_names is an ref to an array of form element names.  As an example:
  get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
- will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
+ will result in $env{'form.uname'} and $env{'form.udom'} being set.
  =cut
- Line 2486  sub get_unprocessed_cgi {
+ Line 3752  sub get_unprocessed_cgi {
      if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
        $value =~ tr/+/ /;
        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
-       &Apache::lonxml::debug("Seting :$name: to :$value:");
+       unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
-       unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
      }
    }
  }
- Line 2501  returns cache-controlling header code
+ Line 3766  returns cache-controlling header code
  =cut
  sub cacheheader {
-   unless ($ENV{'request.method'} eq 'GET') { return ''; }
+     unless ($env{'request.method'} eq 'GET') { return ''; }
-   my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
+     my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
-   my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
+     my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
                  <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
                  <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
-   return $output;
+     return $output;
  }
  =pod
- Line 2518  specifies header code to not have cache
+ Line 3783  specifies header code to not have cache
  =cut
  sub no_cache {
-   my ($r) = @_;
+     my ($r) = @_;
-   unless ($ENV{'request.method'} eq 'GET') { return ''; }
+     if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
-   #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
+ 	$env{'request.method'} ne 'GET') { return ''; }
-   $r->no_cache(1);
+     my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
-   $r->header_out("Pragma" => "no-cache");
+     $r->no_cache(1);
-   #$r->header_out("Expires" => $date);
+     $r->header_out("Expires" => $date);
+     $r->header_out("Pragma" => "no-cache");
  }
  sub content_type {
-   my ($r,$type,$charset) = @_;
+     my ($r,$type,$charset) = @_;
-   unless ($charset) {
+     if ($r) {
-       $charset=&Apache::lonlocal::current_encoding;
+ 	#  Note that printout.pl calls this with undef for $r.
-   }
+ 	&no_cache($r);
-   $r->content_type($type.($charset?'; charset='.$charset:''));
+     }
+     if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
+     unless ($charset) {
+ 	$charset=&Apache::lonlocal::current_encoding;
+     }
+     if ($charset) { $type.='; charset='.$charset; }
+     if ($r) {
+ 	$r->content_type($type);
+     } else {
+ 	print("Content-type: $type\n\n");
+     }
  }
  =pod
  =item * add_to_env($name,$value)
- adds $name to the %ENV hash with value
+ adds $name to the %env hash with value
  $value, if $name already exists, the entry is converted to an array
  reference and $value is added to the array.
- Line 2546  reference and $value is added to the arr
+ Line 3822  reference and $value is added to the arr
  sub add_to_env {
    my ($name,$value)=@_;
-   if (defined($ENV{$name})) {
+   if (defined($env{$name})) {
-     if (ref($ENV{$name})) {
+     if (ref($env{$name})) {
        #already have multiple values
-       push(@{ $ENV{$name} },$value);
+       push(@{ $env{$name} },$value);
      } else {
        #first time seeing multiple values, convert hash entry to an arrayref
-       my $first=$ENV{$name};
+       my $first=$env{$name};
-       undef($ENV{$name});
+       undef($env{$name});
-       push(@{ $ENV{$name} },$first,$value);
+       push(@{ $env{$name} },$first,$value);
      }
    } else {
-     $ENV{$name}=$value;
+     $env{$name}=$value;
    }
  }
- Line 2565  sub add_to_env {
+ Line 3841  sub add_to_env {
  =item * get_env_multiple($name)
- gets $name from the %ENV hash, it seemlessly handles the cases where multiple
+ gets $name from the %env hash, it seemlessly handles the cases where multiple
  values may be defined and end up as an array ref.
  returns an array of values
- Line 2575  returns an array of values
+ Line 3851  returns an array of values
  sub get_env_multiple {
      my ($name) = @_;
      my @values;
-     if (defined($ENV{$name})) {
+     if (defined($env{$name})) {
          # exists is it an array
-         if (ref($ENV{$name})) {
+         if (ref($env{$name})) {
-             @values=@{ $ENV{$name} };
+             @values=@{ $env{$name} };
          } else {
-             $values[0]=$ENV{$name};
+             $values[0]=$env{$name};
          }
      }
      return(@values);
- Line 2598  sub get_env_multiple {
+ Line 3874  sub get_env_multiple {
  =item * upfile_store($r)
  Store uploaded file, $r should be the HTTP Request object,
- needs $ENV{'form.upfile'}
+ needs $env{'form.upfile'}
  returns $datatoken to be put into hidden field
  =cut
  sub upfile_store {
      my $r=shift;
-     $ENV{'form.upfile'}=~s/\r/\n/gs;
+     $env{'form.upfile'}=~s/\r/\n/gs;
-     $ENV{'form.upfile'}=~s/\f/\n/gs;
+     $env{'form.upfile'}=~s/\f/\n/gs;
-     $ENV{'form.upfile'}=~s/\n+/\n/gs;
+     $env{'form.upfile'}=~s/\n+/\n/gs;
-     $ENV{'form.upfile'}=~s/\n+$//gs;
+     $env{'form.upfile'}=~s/\n+$//gs;
-     my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
+     my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
- 	'_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
+ 	'_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
      {
          my $datafile = $r->dir_config('lonDaemons').
                             '/tmp/'.$datatoken.'.tmp';
          if ( open(my $fh,">$datafile") ) {
-             print $fh $ENV{'form.upfile'};
+             print $fh $env{'form.upfile'};
              close($fh);
          }
      }
- Line 2628  sub upfile_store {
+ Line 3904  sub upfile_store {
  =item * load_tmp_file($r)
  Load uploaded file from tmp, $r should be the HTTP Request object,
- needs $ENV{'form.datatoken'},
+ needs $env{'form.datatoken'},
- sets $ENV{'form.upfile'} to the contents of the file
+ sets $env{'form.upfile'} to the contents of the file
  =cut
- Line 2638  sub load_tmp_file {
+ Line 3914  sub load_tmp_file {
      my @studentdata=();
      {
          my $studentfile = $r->dir_config('lonDaemons').
-                               '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
+                               '/tmp/'.$env{'form.datatoken'}.'.tmp';
          if ( open(my $fh,"<$studentfile") ) {
              @studentdata=<$fh>;
              close($fh);
          }
      }
-     $ENV{'form.upfile'}=join('',@studentdata);
+     $env{'form.upfile'}=join('',@studentdata);
  }
  =pod
- Line 2653  sub load_tmp_file {
+ Line 3929  sub load_tmp_file {
  Separate uploaded file into records
  returns array of records,
- needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
+ needs $env{'form.upfile'} and $env{'form.upfiletype'}
  =cut
  sub upfile_record_sep {
-     if ($ENV{'form.upfiletype'} eq 'xml') {
+     if ($env{'form.upfiletype'} eq 'xml') {
      } else {
- 	return split(/\n/,$ENV{'form.upfile'});
+ 	my @records;
+ 	foreach my $line (split(/\n/,$env{'form.upfile'})) {
+ 	    if ($line=~/^\s*$/) { next; }
+ 	    push(@records,$line);
+ 	}
+ 	return @records;
      }
  }
- Line 2668  sub upfile_record_sep {
+ Line 3949  sub upfile_record_sep {
  =item * record_sep($record)
- Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
+ Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
  =cut
+ sub takeleft {
+     my $index=shift;
+     return substr('0000'.$index,-4,4);
+ }
  sub record_sep {
      my $record=shift;
      my %components=();
-     if ($ENV{'form.upfiletype'} eq 'xml') {
+     if ($env{'form.upfiletype'} eq 'xml') {
-     } elsif ($ENV{'form.upfiletype'} eq 'space') {
+     } elsif ($env{'form.upfiletype'} eq 'space') {
          my $i=0;
          foreach (split(/\s+/,$record)) {
              my $field=$_;
              $field=~s/^(\"|\')//;
              $field=~s/(\"|\')$//;
-             $components{$i}=$field;
+             $components{&takeleft($i)}=$field;
              $i++;
          }
-     } elsif ($ENV{'form.upfiletype'} eq 'tab') {
+     } elsif ($env{'form.upfiletype'} eq 'tab') {
          my $i=0;
          foreach (split(/\t/,$record)) {
              my $field=$_;
              $field=~s/^(\"|\')//;
              $field=~s/(\"|\')$//;
-             $components{$i}=$field;
+             $components{&takeleft($i)}=$field;
              $i++;
          }
      } else {
- Line 2709  sub record_sep {
+ Line 3995  sub record_sep {
                  $field=~s/^\s*$delimiter//;
                  $field=~s/$delimiter\s*$//;
              }
-             $components{$i}=$field;
+             $components{&takeleft($i)}=$field;
  	    $i++;
          }
      }
- Line 2746  sub upfile_select_html {
+ Line 4032  sub upfile_select_html {
      return $Str;
  }
+ sub get_samples {
+     my ($records,$toget) = @_;
+     my @samples=({});
+     my $got=0;
+     foreach my $rec (@$records) {
+ 	my %temp = &record_sep($rec);
+ 	if (! grep(/\S/, values(%temp))) { next; }
+ 	if (%temp) {
+ 	    $samples[$got]=\%temp;
+ 	    $got++;
+ 	    if ($got == $toget) { last; }
+ 	}
+     }
+     return \@samples;
+ }
  ######################################################
  ######################################################
- Line 2763  Apache Request ref, $records is an array
+ Line 4065  Apache Request ref, $records is an array
  ######################################################
  sub csv_print_samples {
      my ($r,$records) = @_;
-     my (%sone,%stwo,%sthree);
+     my $samples = &get_samples($records,3);
-     %sone=&record_sep($$records[0]);
-     if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
-     if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
-     #
      $r->print(&mt('Samples').'<br /><table border="2"><tr>');
-     foreach (sort({$a <=> $b} keys(%sone))) {
+     foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
          $r->print('<th>'.&mt('Column&nbsp;[_1]',($_+1)).'</th>'); }
      $r->print('</tr>');
-     foreach my $hash (\%sone,\%stwo,\%sthree) {
+     foreach my $hash (@$samples) {
  	$r->print('<tr>');
- 	foreach (sort({$a <=> $b} keys(%sone))) {
+ 	foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
  	    $r->print('<td>');
  	    if (defined($$hash{$_})) { $r->print($$hash{$_}); }
  	    $r->print('</td>');
- Line 2795  Prints a table to create associations be
+ Line 4094  Prints a table to create associations be
  $r is an Apache Request ref,
  $records is an arrayref from &Apache::loncommon::upfile_record_sep,
- $d is an array of 2 element arrays (internal name, displayed name)
+ $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
  =cut
- Line 2803  $d is an array of 2 element arrays (inte
+ Line 4102  $d is an array of 2 element arrays (inte
  ######################################################
  sub csv_print_select_table {
      my ($r,$records,$d) = @_;
-     my $i=0;my %sone;
+     my $i=0;
-     %sone=&record_sep($$records[0]);
+     my $samples = &get_samples($records,1);
      $r->print(&mt('Associate columns with student attributes.')."\n".
  	     '<table border="2"><tr>'.
                '<th>'.&mt('Attribute').'</th>'.
                '<th>'.&mt('Column').'</th></tr>'."\n");
      foreach (@$d) {
- 	my ($value,$display)=@{ $_ };
+ 	my ($value,$display,$defaultcol)=@{ $_ };
  	$r->print('<tr><td>'.$display.'</td>');
  	$r->print('<td><select name=f'.$i.
  		  ' onchange="javascript:flip(this.form,'.$i.');">');
  	$r->print('<option value="none"></option>');
- 	foreach (sort({$a <=> $b} keys(%sone))) {
+ 	foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
- 	    $r->print('<option value="'.$_.'">Column '.($_+1).'</option>');
+ 	    $r->print('<option value="'.$_.'"'.
+                       ($_ eq $defaultcol ? ' selected="selected" ' : '').
+                       '>Column '.($_+1).'</option>');
  	}
  	$r->print('</select></td></tr>'."\n");
  	$i++;
- Line 2845  $d is an array of 2 element arrays (inte
+ Line 4146  $d is an array of 2 element arrays (inte
  ######################################################
  sub csv_samples_select_table {
      my ($r,$records,$d) = @_;
-     my %sone; my %stwo; my %sthree;
      my $i=0;
      #
+     my $samples = &get_samples($records,3);
      $r->print('<table border=2><tr><th>'.
                &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
-     %sone=&record_sep($$records[0]);
-     if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
+     foreach my $key (sort(keys(%{ $samples->[0] }))) {
-     if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
-     #
-     foreach (sort keys %sone) {
  	$r->print('<tr><td><select name="f'.$i.'"'.
  		  ' onchange="javascript:flip(this.form,'.$i.');">');
- 	foreach (@$d) {
+ 	foreach my $option (@$d) {
- 	    my ($value,$display)=@{ $_ };
+ 	    my ($value,$display,$defaultcol)=@{ $option };
- 	    $r->print('<option value="'.$value.'">'.$display.'</option>');
+ 	    $r->print('<option value="'.$value.'"'.
+                       ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
+                       $display.'</option>');
  	}
  	$r->print('</select></td><td>');
- 	if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
+ 	foreach my $line (0..2) {
- 	if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
+ 	    if (defined($samples->[$line]{$key})) {
- 	if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
+ 		$r->print($samples->[$line]{$key}."<br />\n");
+ 	    }
+ 	}
  	$r->print('</td></tr>');
  	$i++;
      }
- Line 2953  the routine &Apache::lonnet::transfer_pr
+ Line 4255  the routine &Apache::lonnet::transfer_pr
  my $uniq=0;
  sub get_cgi_id {
      $uniq=($uniq+1)%100000;
-     return (time.'_'.$uniq);
+     return (time.'_'.$$.'_'.$uniq);
  }
  ############################################################
- Line 2984  If $Max is < any data point, the graph w
+ Line 4286  If $Max is < any data point, the graph w
  =item $colors: array ref holding the colors to be used for the data sets when
  they are plotted.  If undefined, default values will be used.
+ =item $labels: array ref holding the labels to use on the x-axis for the bars.
  =item @Values: An array of array references.  Each array reference holds data
  to be plotted in a stacked bar chart.
+ =item If the final element of @Values is a hash reference the key/value
+ pairs will be added to the graph definition.
  =back
  Returns:
- Line 2999  information for the plot.
+ Line 4306  information for the plot.
  ############################################################
  ############################################################
  sub DrawBarGraph {
-     my ($Title,$xlabel,$ylabel,$Max,$colors,@Values)=@_;
+     my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
      #
      if (! defined($colors)) {
          $colors = ['#33ff00',
- Line 3007  sub DrawBarGraph {
+ Line 4314  sub DrawBarGraph {
                    '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
                    ];
      }
+     my $extra_settings = {};
+     if (ref($Values[-1]) eq 'HASH') {
+         $extra_settings = pop(@Values);
+     }
      #
      my $identifier = &get_cgi_id();
      my $id = 'cgi.'.$identifier;
      if (! @Values || ref($Values[0]) ne 'ARRAY') {
          return '';
      }
+     #
+     my @Labels;
+     if (defined($labels)) {
+         @Labels = @$labels;
+     } else {
+         for (my $i=0;$i<@{$Values[0]};$i++) {
+             push (@Labels,$i+1);
+         }
+     }
+     #
      my $NumBars = scalar(@{$Values[0]});
+     if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
      my %ValuesHash;
      my $NumSets=1;
      foreach my $array (@Values) {
- Line 3023  sub DrawBarGraph {
+ Line 4345  sub DrawBarGraph {
      }
      #
      my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
-     if ($NumBars < 10) {
+     if ($NumBars < 3) {
+         $width = 120+$NumBars*32;
+         $xskip = 1;
+         $bar_width = 30;
+     } elsif ($NumBars < 5) {
+         $width = 120+$NumBars*20;
+         $xskip = 1;
+         $bar_width = 20;
+     } elsif ($NumBars < 10) {
          $width = 120+$NumBars*15;
          $xskip = 1;
          $bar_width = 15;
- Line 3041  sub DrawBarGraph {
+ Line 4371  sub DrawBarGraph {
          $bar_width = 4;
      }
      #
-     my @Labels;
-     for (my $i=0;$i<@{$Values[0]};$i++) {
-         push (@Labels,$i+1);
-     }
-     #
      $Max = 1 if ($Max < 1);
      if ( int($Max) < $Max ) {
          $Max++;
- Line 3068  sub DrawBarGraph {
+ Line 4393  sub DrawBarGraph {
      $ValuesHash{$id.'.bar_width'} = $bar_width;
      $ValuesHash{$id.'.labels'} = join(',',@Labels);
      #
+     # Deal with other parameters
+     while (my ($key,$value) = each(%$extra_settings)) {
+         $ValuesHash{$id.'.'.$key} = $value;
+     }
+     #
      &Apache::lonnet::appenv(%ValuesHash);
      return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
  }
- Line 3102  plotted in.  If undefined, default value
+ Line 4432  plotted in.  If undefined, default value
  =item $Xlabels: Array ref containing the labels to be used for the X-axis.
  =item $Ydata: Array ref containing Array refs.
- Each of the contained arrays will be plotted as a seperate curve.
+ Each of the contained arrays will be plotted as a separate curve.
  =item %Values: hash indicating or overriding any default values which are
  passed to graph.png.
- Line 3302  Inputs:
+ Line 4632  Inputs:
  sub chartlink {
      my ($linktext, $sname, $sdomain) = @_;
      my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
-         '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
+         '&amp;SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
-         '&chartoutputmode='.HTML::Entities::encode('html, with all links').
+         '&amp;chartoutputmode='.HTML::Entities::encode('html, with all links').
         '">'.$linktext.'</a>';
  }
- Line 3344  Returns: both routines return nothing
+ Line 4674  Returns: both routines return nothing
  sub store_course_settings {
      # save to the environment
      # appenv the same items, just to be safe
-     my $courseid = $ENV{'request.course.id'};
+     my $courseid = $env{'request.course.id'};
-     my $coursedom = $ENV{'course.'.$courseid.'.domain'};
+     my $udom  = $env{'user.domain'};
+     my $uname = $env{'user.name'};
      my ($prefix,$Settings) = @_;
      my %SaveHash;
      my %AppHash;
      while (my ($setting,$type) = each(%$Settings)) {
-         my $basename = 'env.internal.'.$prefix.'.'.$setting;
+         my $basename = join('.','internal',$courseid,$prefix,$setting);
-         my $envname = 'course.'.$courseid.'.'.$basename;
+         my $envname = 'environment.'.$basename;
-         if (exists($ENV{'form.'.$setting})) {
+         if (exists($env{'form.'.$setting})) {
              # Save this value away
              if ($type eq 'scalar' &&
-                 (! exists($ENV{$envname}) ||
+                 (! exists($env{$envname}) ||
-                  $ENV{$envname} ne $ENV{'form.'.$setting})) {
+                  $env{$envname} ne $env{'form.'.$setting})) {
-                 $SaveHash{$basename} = $ENV{'form.'.$setting};
+                 $SaveHash{$basename} = $env{'form.'.$setting};
-                 $AppHash{$envname}   = $ENV{'form.'.$setting};
+                 $AppHash{$envname}   = $env{'form.'.$setting};
              } elsif ($type eq 'array') {
                  my $stored_form;
-                 if (ref($ENV{'form.'.$setting})) {
+                 if (ref($env{'form.'.$setting})) {
                      $stored_form = join(',',
                                          map {
                                              &Apache::lonnet::escape($_);
-                                         } sort(@{$ENV{'form.'.$setting}}));
+                                         } sort(@{$env{'form.'.$setting}}));
                  } else {
                      $stored_form =
-                         &Apache::lonnet::escape($ENV{'form.'.$setting});
+                         &Apache::lonnet::escape($env{'form.'.$setting});
                  }
                  # Determine if the array contents are the same.
-                 if ($stored_form ne $ENV{$envname}) {
+                 if ($stored_form ne $env{$envname}) {
                      $SaveHash{$basename} = $stored_form;
                      $AppHash{$envname}   = $stored_form;
                  }
- Line 3379  sub store_course_settings {
+ Line 4710  sub store_course_settings {
          }
      }
      my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
-                                           $coursedom,
+                                           $udom,$uname);
-                                           $ENV{'course.'.$courseid.'.num'});
      if ($put_result !~ /^(ok|delayed)/) {
          &Apache::lonnet::logthis('unable to save form parameters, '.
                                   'got error:'.$put_result);
- Line 3391  sub store_course_settings {
+ Line 4721  sub store_course_settings {
  }
  sub restore_course_settings {
-     my $courseid = $ENV{'request.course.id'};
+     my $courseid = $env{'request.course.id'};
      my ($prefix,$Settings) = @_;
      while (my ($setting,$type) = each(%$Settings)) {
-         next if (exists($ENV{'form.'.$setting}));
+         next if (exists($env{'form.'.$setting}));
-         my $envname = 'course.'.$courseid.'.env.internal.'.$prefix.
+         my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
              '.'.$setting;
-         if (exists($ENV{$envname})) {
+         if (exists($env{$envname})) {
              if ($type eq 'scalar') {
-                 $ENV{'form.'.$setting} = $ENV{$envname};
+                 $env{'form.'.$setting} = $env{$envname};
              } elsif ($type eq 'array') {
-                 $ENV{'form.'.$setting} = [
+                 $env{'form.'.$setting} = [
                                             map {
                                                 &Apache::lonnet::unescape($_);
-                                            } split(',',$ENV{$envname})
+                                            } split(',',$env{$envname})
                                             ];
              }
          }
- Line 3437  sub icon {
+ Line 4767  sub icon {
  		$curfext.".gif";
  	}
      }
-     return $iconname;
+     return &lonhttpdurl($iconname);
  }
+ sub lonhttpdurl {
+     my ($url)=@_;
+     my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
+     if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
+     return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
+ }
+ sub connection_aborted {
+     my ($r)=@_;
+     $r->print(" ");$r->rflush();
+     my $c = $r->connection;
+     return $c->aborted();
+ }
+ #    Escapes strings that may have embedded 's that will be put into
+ #    strings as 'strings'.
+ sub escape_single {
+     my ($input) = @_;
+     $input =~ s/\\/\\\\/g;	# Escape the \'s..(must be first)>
+     $input =~ s/\'/\\\'/g;	# Esacpe the 's....
+     return $input;
+ }
+ #  Same as escape_single, but escape's "'s  This
+ #  can be used for  "strings"
+ sub escape_double {
+     my ($input) = @_;
+     $input =~ s/\\/\\\\/g;	# Escape the /'s..(must be first)>
+     $input =~ s/\"/\\\"/g;	# Esacpe the "s....
+     return $input;
+ }
+ #   Escapes the last element of a full URL.
+ sub escape_url {
+     my ($url)   = @_;
+     my @urlslices = split(/\//, $url,-1);
+     my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
+     return join('/',@urlslices).'/'.$lastitem;
+ }
  =pod
  =back

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.172
changed lines
	Added in v.1.329