loncom/interface/lonhtmlcommon.pm - diff

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Diff for /loncom/interface/lonhtmlcommon.pm between versions 1.84.2.2 and 1.309

-version 1.84.2.2, 2004/08/29 07:53:00
+version 1.309, 2012/04/16 19:24:59
  Line 55  html.
  package Apache::lonhtmlcommon;
+ use strict;
  use Time::Local;
  use Time::HiRes;
  use Apache::lonlocal;
- use strict;
+ use Apache::lonnet;
+ use HTML::Entities();
+ use LONCAPA;
+ sub java_not_enabled {
+    return "\n".'<span class="LC_error">'.
+           &mt('The required Java applet could not be started. Please make sure to have Java installed and active in your browser.').
+           "</span>\n";
+ }
+ sub coursepreflink {
+    my ($text,$category)=@_;
+    if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
+       return '<a target="_top" href="'.&HTML::Entities::encode("/adm/courseprefs?phase=display&actions=$category",'<>&"').'"><span class="LC_setting">'.$text.'</span></a>';
+    } else {
+       return '';
+    }
+ }
+ sub raw_href_to_link {
+    my ($message)=@_;
+    $message=~s/(https?\:\/\/[^\s\'\"\<]+)([\s\<]|$)/<a href="$1"><tt>$1<\/tt><\/a>$2/gi;
+    return $message;
+ }
+ sub entity_encode {
+     my ($text)=@_;
+     return &HTML::Entities::encode($text, '<>&"');
+ }
+ sub direct_parm_link {
+     my ($linktext,$symb,$filter,$part,$target)=@_;
+     $symb=&entity_encode($symb);
+     $filter=&entity_encode($filter);
+     $part=&entity_encode($part);
+     if (($symb) && (&Apache::lonnet::allowed('opa')) && ($target ne 'tex')) {
+        return "<a target='_top' href='/adm/parmset?symb=$symb&filter=$filter&part=$part'><span class='LC_setting'>$linktext</span></a>";
+     } else {
+        return $linktext;
+     }
+ }
+ ##############################################
+ ##############################################
+ =item &confirm_success()
+ Successful completion of an operation message
+ =cut
+ sub confirm_success {
+    my ($message,$failure)=@_;
+    if ($failure) {
+       return '<span class="LC_error" style="font-size: inherit;">'."\n"
+             .'<img src="/adm/lonIcons/navmap.wrong.gif" alt="'.&mt('Error').'" /> '."\n"
+             .$message."\n"
+             .'</span>'."\n";
+    } else {
+       return '<span class="LC_success">'."\n"
+             .'<img src="/adm/lonIcons/navmap.correct.gif" alt="'.&mt('OK').'" /> '."\n"
+             .$message."\n"
+             .'</span>'."\n";
+    }
+ }
  ##############################################
  ##############################################
  =pod
- =item authorbombs
+ =item &dragmath_button()
+ Creates a button that launches a dragmath popup-window, in which an
+ expression can be edited and pasted as LaTeX into a specified textarea.
+   textarea - Name of the textarea to edit.
+   helpicon - If true, show a help icon to the right of the button.
+ =cut
+ sub dragmath_button {
+     my ($textarea,$helpicon) = @_;
+     my $help_text;
+     if ($helpicon) {
+         $help_text = &Apache::loncommon::help_open_topic('Authoring_Math_Editor',undef,undef,undef,undef,'mathhelpicon_'.$textarea);
+     }
+     my $buttontext=&mt('Edit Math');
+     return <<ENDDRAGMATH;
+                 <input type="button" value="$buttontext" onclick="javascript:mathedit('$textarea',document)" />$help_text
+ ENDDRAGMATH
+ }
+ ##############################################
+ =pod
+ =item &dragmath_js()
+ Javascript used to open pop-up window containing dragmath applet which
+ can be used to paste LaTeX into a textarea.
+ =cut
+ sub dragmath_js {
+     my ($popup) = @_;
+     return <<ENDDRAGMATHJS;
+                 <script type="text/javascript">
+                 // <![CDATA[
+                   function mathedit(textarea, doc) {
+                      targetEntry = textarea;
+                      targetDoc   = doc;
+                      newwin  = window.open("/adm/dragmath/applet/$popup.html","","width=565,height=500,resizable");
+                   }
+                 // ]]>
+                 </script>
+ ENDDRAGMATHJS
+ }
+ ##############################################
+ ##############################################
+ =pod
+ =item &dependencies_button()
+ Creates a button that launches a popup-window, in which dependencies
+ for the web page in the main window can be added to, replaced or deleted.
+ =cut
+ sub dependencies_button {
+     my $buttontext=&mt('Manage Dependencies');
+     return <<"END";
+                 <input type="button" value="$buttontext" onclick="javascript:dependencycheck();" />
+ END
+ }
+ ##############################################
+ =pod
+ =item &dependencycheck_js()
+ Javascript used to open pop-up window containing interface to manage
+ dependencies for a web page uploaded diretcly to a course.
+ =cut
+ sub dependencycheck_js {
+     my ($symb,$title) = @_;
+     my $link = '/adm/dependencies?symb='.&HTML::Entities::encode($symb,'<>&"').
+                '&title='.&HTML::Entities::encode($title,'<>&"');
+     return <<ENDJS;
+                 <script type="text/javascript">
+                 // <![CDATA[
+                   function dependencycheck() {
+                      depwin  = window.open("$link","","width=750,height=500,resizable,scrollbars=yes");
+                   }
+                 // ]]>
+                 </script>
+ ENDJS
+ }
+ ##############################################
+ ##############################################
+ =pod
+ =item &authorbombs()
  =cut
- Line 75  use strict;
+ Line 238  use strict;
  sub authorbombs {
      my $url=shift;
      $url=&Apache::lonnet::declutter($url);
-     my ($udom,$uname)=($url=~/^(\w+)\/(\w+)\//);
+     my ($udom,$uname)=($url=~m{^($LONCAPA::domain_re)/($LONCAPA::username_re)/});
      my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
-     foreach (keys %bombs) {
+     foreach my $bomb (keys(%bombs)) {
- 	if ($_=~/^$udom\/$uname\//) {
+ 	if ($bomb =~ /^$udom\/$uname\//) {
  	    return '<a href="/adm/bombs/'.$url.
- 		'"><img src="/adm/lonMisc/bomb.gif" border="0" /></a>'.
+ 		'"><img src="'.&Apache::loncommon::lonhttpdurl('/adm/lonMisc/bomb.gif').'" alt="'.&mt('Bomb').'" border="0" /></a>'.
  		&Apache::loncommon::help_open_topic('About_Bombs');
  	}
      }
- Line 92  sub authorbombs {
+ Line 255  sub authorbombs {
  sub recent_filename {
      my $area=shift;
-     return 'nohist_recent_'.&Apache::lonnet::escape($area);
+     return 'nohist_recent_'.&escape($area);
  }
  sub store_recent {
-     my ($area,$name,$value)=@_;
+     my ($area,$name,$value,$freeze)=@_;
      my $file=&recent_filename($area);
      my %recent=&Apache::lonnet::dump($file);
-     if (scalar(keys(%recent))>10) {
+     if (scalar(keys(%recent))>20) {
  # remove oldest value
- 	my $oldest=time;
+ 	my $oldest=time();
  	my $delkey='';
- 	foreach (keys %recent) {
+ 	foreach my $item (keys(%recent)) {
- 	    my $thistime=(split(/\&/,$recent{$_}))[0];
+ 	    my $thistime=(split(/\&/,$recent{$item}))[0];
- 	    if ($thistime<$oldest) {
+ 	    if (($thistime ne "always_include") && ($thistime<$oldest)) {
  		$oldest=$thistime;
- 		$delkey=$_;
+ 		$delkey=$item;
  	    }
  	}
  	&Apache::lonnet::del($file,[$delkey]);
      }
  # store new value
+     my $timestamp;
+     if ($freeze) {
+         $timestamp = "always_include";
+     } else {
+         $timestamp = time();
+     }
      &Apache::lonnet::put($file,{ $name =>
- 				 time.'&'.&Apache::lonnet::escape($value) });
+ 				 $timestamp.'&'.&escape($value) });
+ }
+ sub remove_recent {
+     my ($area,$names)=@_;
+     my $file=&recent_filename($area);
+     return &Apache::lonnet::del($file,$names);
  }
  sub select_recent {
      my ($area,$fieldname,$event)=@_;
      my %recent=&Apache::lonnet::dump(&recent_filename($area));
      my $return="\n<select name='$fieldname'".
- 	($event?" onChange='$event'":'').
+ 	($event?" onchange='$event'":'').
  	">\n<option value=''>--- ".&mt('Recent')." ---</option>";
-     foreach (sort keys %recent) {
+     foreach my $value (sort(keys(%recent))) {
- 	unless ($_=~/^error\:/) {
+ 	unless ($value =~/^error\:/) {
- 	    $return.="\n<option value='$_'>".
+ 	    my $escaped = &Apache::loncommon::escape_url($value);
- 		&Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]).
+ 	    &Apache::loncommon::inhibit_menu_check(\$escaped);
+             if ($area eq 'residx') {
+                 next if ((!&Apache::lonnet::allowed('bre',$value)) && (!&Apache::lonnet::allowed('bro',$value)));
+             }
+ 	    $return.="\n<option value='$escaped'>".
+ 		&unescape((split(/\&/,$recent{$value}))[1]).
  		'</option>';
  	}
      }
- Line 134  sub select_recent {
+ Line 314  sub select_recent {
      return $return;
  }
+ sub get_recent {
+     my ($area, $n) = @_;
+     my %recent=&Apache::lonnet::dump(&recent_filename($area));
+ # Create hash with key as time and recent as value
+ # Begin filling return_hash with any 'always_include' option
+     my %time_hash = ();
+     my %return_hash = ();
+     foreach my $item (keys(%recent)) {
+         my ($thistime,$thisvalue)=(split(/\&/,$recent{$item}));
+         if ($thistime eq 'always_include') {
+             $return_hash{$item} = &unescape($thisvalue);
+             $n--;
+         } else {
+             $time_hash{$thistime} = $item;
+         }
+     }
+ # Sort by decreasing time and return key value pairs
+     my $idx = 1;
+     foreach my $item (reverse(sort(keys(%time_hash)))) {
+        $return_hash{$time_hash{$item}} =
+                   &unescape((split(/\&/,$recent{$time_hash{$item}}))[1]);
+        if ($n && ($idx++ >= $n)) {last;}
+     }
+     return %return_hash;
+ }
+ sub get_recent_frozen {
+     my ($area) = @_;
+     my %recent=&Apache::lonnet::dump(&recent_filename($area));
+ # Create hash with all 'frozen' items
+     my %return_hash = ();
+     foreach my $item (keys(%recent)) {
+         my ($thistime,$thisvalue)=(split(/\&/,$recent{$item}));
+         if ($thistime eq 'always_include') {
+             $return_hash{$item} = &unescape($thisvalue);
+         }
+     }
+     return %return_hash;
+ }
  =pod
- =item textbox
+ =item &textbox()
  =cut
- Line 146  sub select_recent {
+ Line 371  sub select_recent {
  sub textbox {
      my ($name,$value,$size,$special) = @_;
      $size = 40 if (! defined($size));
+     $value = &HTML::Entities::encode($value,'<>&"');
      my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
          'value="'.$value.'" '.$special.' />';
      return $Str;
- Line 156  sub textbox {
+ Line 382  sub textbox {
  =pod
- =item checkbox
+ =item &checkbox()
  =cut
- Line 169  sub checkbox {
+ Line 395  sub checkbox {
          $Str .= 'value="'.$value.'"';
      }
      if ($checked) {
-         $Str .= ' checked="1"';
+         $Str .= ' checked="checked"';
+     }
+     $Str .= ' />';
+     return $Str;
+ }
+ =pod
+ =item &radiobutton()
+ =cut
+ ##############################################
+ ##############################################
+ sub radio {
+     my ($name,$checked,$value) = @_;
+     my $Str = '<input type="radio" name="'.$name.'" ';
+     if (defined($value)) {
+         $Str .= 'value="'.$value.'"';
+     }
+     if ($checked eq $value) {
+         $Str .= ' checked="checked"';
      }
      $Str .= ' />';
      return $Str;
- Line 180  sub checkbox {
+ Line 428  sub checkbox {
  =pod
- =item &date_setter
+ =item &date_setter()
  &date_setter returns html and javascript for a compact date-setting form.
- To retrieve values from it, use &get_date_from_form().
+ To retrieve values from it, use &get_date_from_form.
  Inputs
- Line 199  dname_hour, dname_min, and dname_sec.
+ Line 447  dname_hour, dname_min, and dname_sec.
  The current setting for this time parameter.  A unix format time
  (time in seconds since the beginning of Jan 1st, 1970, GMT.
- An undefined value is taken to indicate the value is the current time.
+ An undefined value is taken to indicate the value is the current time
+ unless it is requested to leave it empty. See $includeempty.
  Also, to be explicit, a value of 'now' also indicates the current time.
  =item $special
- Line 209  the date_setter.  See lonparmset for exa
+ Line 458  the date_setter.  See lonparmset for exa
  =item $includeempty
+ If it is set (true) and no date/time value is provided,
+ the date/time fields are left empty.
  =item $state
  Specifies the initial state of the form elements.  Either 'disabled' or empty.
- Line 226  The method used to restrict user input w
+ Line 478  The method used to restrict user input w
  ##############################################
  sub date_setter {
      my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
-         $no_hh_mm_ss) = @_;
+         $no_hh_mm_ss,$defhour,$defmin,$defsec,$nolink) = @_;
+     my $now = time;
+     my $tzname;
+     my ($sec,$min,$hour,$mday,$month,$year) = ('', '', undef,''.''.'');
+     #other potentially useful values:    wkday,yrday,is_daylight_savings
      if (! defined($state) || $state ne 'disabled') {
          $state = '';
      }
      if (! defined($no_hh_mm_ss)) {
          $no_hh_mm_ss = 0;
      }
-     if (! defined($currentvalue) || $currentvalue eq 'now') {
+     if ($currentvalue eq 'now') {
- 	unless ($includeempty) {
+         $currentvalue = $now;
- 	    $currentvalue = time;
- 	} else {
- 	    $currentvalue = 0;
- 	}
      }
-     # other potentially useful values:     wkday,yrday,is_daylight_savings
-     my ($sec,$min,$hour,$mday,$month,$year)=('','',undef,'','','');
+     # Default value: Set empty date field to current time
+     # unless empty inclusion is requested
+     if ((!$includeempty) && (!$currentvalue)) {
+         $currentvalue = $now;
+     }
+     # Do we have a date? Split it!
      if ($currentvalue) {
- 	($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) =
+ 	($tzname,$sec,$min,$hour,$mday,$month,$year) = &get_timedates($currentvalue);
- 	    localtime($currentvalue);
- 	$year += 1900;
+         #No values provided for hour, min, sec? Use default 0
+         if (($defhour) || ($defmin) || ($defsec)) {
+             $sec  = ($defsec  ? $defsec  : 0);
+             $min  = ($defmin  ? $defmin  : 0);
+             $hour = ($defhour ? $defhour : 0);
+         }
      }
      my $result = "\n<!-- $dname date setting form -->\n";
      $result .= <<ENDJS;
- <script language="Javascript">
+ <script type="text/javascript">
+ // <![CDATA[
      function $dname\_checkday() {
          var day   = document.$formname.$dname\_day.value;
          var month = document.$formname.$dname\_month.value;
- Line 280  sub date_setter {
+ Line 545  sub date_setter {
              document.$formname.$dname\_day.value = 30;
          }
      }
      function $dname\_disable() {
          document.$formname.$dname\_month.disabled=true;
          document.$formname.$dname\_day.disabled=true;
- Line 310  document.$formname.$dname\_year.value,
+ Line 575  document.$formname.$dname\_year.value,
          }
      }
+ // ]]>
  </script>
  ENDJS
-     $result .= "  <nobr><select name=\"$dname\_month\" ".$special.' '.
+     $result .= '  <span class="LC_nobreak">';
-         $state.' '.
+     my $monthselector = qq{<select name="$dname\_month" $special $state onchange="javascript:$dname\_checkday()" >};
-         "onChange=\"javascript:$dname\_checkday()\" >\n";
      # Month
      my @Months = qw/January February  March     April   May      June
                      July    August    September October November December/;
      # Pad @Months with a bogus value to make indexing easier
      unshift(@Months,'If you can read this an error occurred');
-     if ($includeempty) { $result.="<option value=''></option>"; }
+     if ($includeempty) { $monthselector.="<option value=''></option>"; }
      for(my $m = 1;$m <=$#Months;$m++) {
-         $result .= "      <option value=\"$m\" ";
+         $monthselector .= qq{      <option value="$m"};
-         $result .= "selected " if ($m-1 eq $month);
+         $monthselector .= ' selected="selected"' if ($m-1 eq $month);
-         $result .= "> ".&mt($Months[$m])." </option>\n";
+         $monthselector .= '> '.&mt($Months[$m]).' </option>'."\n";
      }
-     $result .= "  </select>\n";
+     $monthselector.= '  </select>';
      # Day
-     $result .= "  <input type=\"text\" name=\"$dname\_day\" ".$state.' '.
+     my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
-             "value=\"$mday\" size=\"3\" ".$special.' '.
-             "onChange=\"javascript:$dname\_checkday()\" />\n";
      # Year
-     $result .= "  <input type=\"year\" name=\"$dname\_year\" ".$state.' '.
+     my $yearselector = qq{<input type="text" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
-             "value=\"$year\" size=\"5\" ".$special.' '.
+     #
-             "onChange=\"javascript:$dname\_checkday()\" />\n";
+     my $hourselector = qq{<select name="$dname\_hour" $special $state >};
-     $result .= "&nbsp;&nbsp;";
+     if ($includeempty) {
-     if (! $no_hh_mm_ss) {
+         $hourselector.=qq{<option value=''></option>};
-         # Hours
+     }
-         $result .= "  <select name=\"$dname\_hour\" ".$special." ".$state.' '.
+     for (my $h = 0;$h<24;$h++) {
-             ">\n";
+         $hourselector .= qq{<option value="$h"};
-         if ($includeempty) { $result.="<option value=''></option>"; }
+         $hourselector .= ' selected="selected"' if (defined($hour) && $hour == $h);
-         for (my $h = 0;$h<24;$h++) {
+         $hourselector .= ">";
-             $result .= "      <option value=\"$h\" ";
+         my $timest='';
-             $result .= "selected " if (defined($hour) && $hour == $h);
+         if ($h == 0) {
-             $result .= "> ";
+             $timest .= "12 am";
-             my $timest='';
+         } elsif($h == 12) {
-             if ($h == 0) {
+             $timest .= "12 noon";
-                 $timest .= "12 am";
+         } elsif($h < 12) {
-             } elsif($h == 12) {
+             $timest .= "$h am";
-                 $timest .= "12 noon";
+         } else {
-             } elsif($h < 12) {
+             $timest .= $h-12 ." pm";
-                 $timest .= "$h am";
+         }
-             } else {
+         $timest=&mt($timest);
-                 $timest .= $h-12 ." pm";
+         $hourselector .= $timest." </option>\n";
-             }
+     }
-             $timest=&mt($timest);
+     $hourselector .= "  </select>\n";
-             $result .= $timest." </option>\n";
+     my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
-         }
+     my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
-         $result .= "  </select>\n";
+     my $cal_link;
-         $result .= "  <input type=\"text\" name=\"$dname\_minute\" ".
+     if (!$nolink) {
-             $special.' '.
+         $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
-             $state.' '.
+     }
-             "value=\"$min\" size=\"3\" /> m\n";
+     #
-         $result .= "  <input type=\"text\" name=\"$dname\_second\" ".
+     my $tzone = ' '.$tzname.' ';
-             $special.' '.
+     if ($no_hh_mm_ss) {
-             $state.' '.
+         $result .= &mt('[_1] [_2] [_3] ',
-             "value=\"$sec\" size=\"3\" /> s\n";
+                        $monthselector,$dayselector,$yearselector).
+                    $tzone;
+         if (!$nolink) {
+             $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
+         }
+     } else {
+         $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s ',
+                       $monthselector,$dayselector,$yearselector,
+                       $hourselector,$minuteselector,$secondselector).
+                    $tzone;
+         if (!$nolink) {
+             $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
+         }
      }
-     $result .= "<a href=\"javascript:$dname\_opencalendar()\">".
+     $result .= "</span>\n<!-- end $dname date setting form -->\n";
-     &mt('Select Date')."</a></nobr>\n<!-- end $dname date setting form -->\n";
      return $result;
  }
+ sub get_timedates {
+     my ($epoch) = @_;
+     my $dt = DateTime->from_epoch(epoch => $epoch)
+                      ->set_time_zone(&Apache::lonlocal::gettimezone());
+     my $tzname = $dt->time_zone_short_name();
+     my $sec = $dt->second;
+     my $min = $dt->minute;
+     my $hour = $dt->hour;
+     my $mday = $dt->day;
+     my $month = $dt->month;
+     if ($month) {
+         $month --;
+     }
+     my $year = $dt->year;
+     return ($tzname,$sec,$min,$hour,$mday,$month,$year);
+ }
+ sub build_url {
+     my ($base, $fields)=@_;
+     my $url;
+     $url = $base.'?';
+     foreach my $key (keys(%$fields)) {
+         $url.=&escape($key).'='.&escape($$fields{$key}).'&amp;';
+     }
+     $url =~ s/&amp;$//;
+     return $url;
+ }
  ##############################################
  ##############################################
  =pod
- =item &get_date_from_form
+ =item &get_date_from_form()
  get_date_from_form retrieves the date specified in an &date_setter form.
- Line 388  Inputs:
+ Line 691  Inputs:
  =item $dname
- The name passed to &datesetter, which prefixes the form elements.
+ The name passed to &date_setter, which prefixes the form elements.
  =item $defaulttime
- Line 406  sub get_date_from_form {
+ Line 709  sub get_date_from_form {
      my ($dname) = @_;
      my ($sec,$min,$hour,$day,$month,$year);
      #
-     if (defined($ENV{'form.'.$dname.'_second'})) {
+     if (defined($env{'form.'.$dname.'_second'})) {
-         my $tmpsec = $ENV{'form.'.$dname.'_second'};
+         my $tmpsec = $env{'form.'.$dname.'_second'};
          if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
              $sec = $tmpsec;
          }
- Line 415  sub get_date_from_form {
+ Line 718  sub get_date_from_form {
      } else {
          $sec = 0;
      }
-     if (defined($ENV{'form.'.$dname.'_minute'})) {
+     if (defined($env{'form.'.$dname.'_minute'})) {
-         my $tmpmin = $ENV{'form.'.$dname.'_minute'};
+         my $tmpmin = $env{'form.'.$dname.'_minute'};
          if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
              $min = $tmpmin;
          }
- Line 424  sub get_date_from_form {
+ Line 727  sub get_date_from_form {
      } else {
          $min = 0;
      }
-     if (defined($ENV{'form.'.$dname.'_hour'})) {
+     if (defined($env{'form.'.$dname.'_hour'})) {
-         my $tmphour = $ENV{'form.'.$dname.'_hour'};
+         my $tmphour = $env{'form.'.$dname.'_hour'};
          if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
              $hour = $tmphour;
          }
      } else {
          $hour = 0;
      }
-     if (defined($ENV{'form.'.$dname.'_day'})) {
+     if (defined($env{'form.'.$dname.'_day'})) {
-         my $tmpday = $ENV{'form.'.$dname.'_day'};
+         my $tmpday = $env{'form.'.$dname.'_day'};
          if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
              $day = $tmpday;
          }
      }
-     if (defined($ENV{'form.'.$dname.'_month'})) {
+     if (defined($env{'form.'.$dname.'_month'})) {
-         my $tmpmonth = $ENV{'form.'.$dname.'_month'};
+         my $tmpmonth = $env{'form.'.$dname.'_month'};
          if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
-             $month = $tmpmonth - 1;
+             $month = $tmpmonth;
          }
      }
-     if (defined($ENV{'form.'.$dname.'_year'})) {
+     if (defined($env{'form.'.$dname.'_year'})) {
-         my $tmpyear = $ENV{'form.'.$dname.'_year'};
+         my $tmpyear = $env{'form.'.$dname.'_year'};
-         if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
+         if (($tmpyear =~ /^\d+$/) && ($tmpyear >= 1970)) {
-             $year = $tmpyear - 1900;
+             $year = $tmpyear;
          }
      }
-     if (($year<70) || ($year>137)) { return undef; }
+     if (($year<1970) || ($year>2037)) { return undef; }
      if (defined($sec) && defined($min)   && defined($hour) &&
-         defined($day) && defined($month) && defined($year) &&
+         defined($day) && defined($month) && defined($year)) {
-         eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
+         my $timezone = &Apache::lonlocal::gettimezone();
-         return &timelocal($sec,$min,$hour,$day,$month,$year);
+         my $dt = DateTime->new( year   => $year,
+                                 month  => $month,
+                                 day    => $day,
+                                 hour   => $hour,
+                                 minute => $min,
+                                 second => $sec,
+                                 time_zone => $timezone,
+                               );
+         my $epoch_time  = $dt->epoch;
+         if ($epoch_time ne '') {
+             return $epoch_time;
+         } else {
+             return undef;
+         }
      } else {
          return undef;
      }
- Line 476  parameter setting wizard.
+ Line 792  parameter setting wizard.
  ##############################################
  sub pjump_javascript_definition {
      my $Str = <<END;
-     function pjump(type,dis,value,marker,ret,call) {
+     function pjump(type,dis,value,marker,ret,call,hour,min,sec) {
-         parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
+         openMyModal("/adm/rat/parameter.html?type="+escape(type)
                   +"&value="+escape(value)+"&marker="+escape(marker)
                   +"&return="+escape(ret)
-                  +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
+                  +"&call="+escape(call)+"&name="+escape(dis)
-                  "height=350,width=350,scrollbars=no,menubar=no");
+                  +"&defhour="+escape(hour)+"&defmin="+escape(min)
+                  +"&defsec="+escape(sec)+"&modal=1",350,350,'no');
      }
  END
      return $Str;
- Line 507  sub javascript_nothing {
+ Line 824  sub javascript_nothing {
      my $nothing = "''";
      my $user_browser;
      my $user_os;
-     $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
+     $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
-     $user_os      = $ENV{'browser.os'}   if (exists($ENV{'browser.os'}));
+     $user_os      = $env{'browser.os'}   if (exists($env{'browser.os'}));
      if (! defined($user_browser) || ! defined($user_os)) {
          (undef,$user_browser,undef,undef,undef,$user_os) =
                             &Apache::loncommon::decode_user_agent();
- Line 519  sub javascript_nothing {
+ Line 836  sub javascript_nothing {
      return $nothing;
  }
+ ##############################################
+ ##############################################
+ sub javascript_docopen {
+     my ($mimetype) = @_;
+     $mimetype ||= 'text/html';
+     # safari does not understand document.open() and loads "text/html"
+     my $nothing = "''";
+     my $user_browser;
+     my $user_os;
+     $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
+     $user_os      = $env{'browser.os'}   if (exists($env{'browser.os'}));
+     if (! defined($user_browser) || ! defined($user_os)) {
+         (undef,$user_browser,undef,undef,undef,$user_os) =
+                            &Apache::loncommon::decode_user_agent();
+     }
+     if ($user_browser eq 'safari' && $user_os =~ 'mac') {
+         $nothing = "document.clear()";
+     } else {
+ 	$nothing = "document.open('$mimetype','replace')";
+     }
+     return $nothing;
+ }
  ##############################################
  ##############################################
- Line 533  enrollment status of students.  The sele
+ Line 873  enrollment status of students.  The sele
  Inputs:
  $status: the currently selected status.  If undefined the value of
- $ENV{'form.Status'} is taken.  If that is undefined, a value of 'Active'
+ $env{'form.Status'} is taken.  If that is undefined, a value of 'Active'
  is used.
  $formname: The name of the form.  If defined the onchange attribute of
- Line 551  Returns: a perl string as described.
+ Line 891  Returns: a perl string as described.
  ##############################################
  ##############################################
  sub StatusOptions {
-     my ($status, $formName,$size,$onchange)=@_;
+     my ($status, $formName,$size,$onchange,$mult)=@_;
      $size = 1 if (!defined($size));
      if (! defined($status)) {
          $status = 'Active';
-         $status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
+         $status = $env{'form.Status'} if (exists($env{'form.Status'}));
      }
-     my $OpSel1 = '';
-     my $OpSel2 = '';
-     my $OpSel3 = '';
-     if($status eq 'Any')         { $OpSel3 = ' selected'; }
-     elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
-     else                         { $OpSel1 = ' selected'; }
      my $Str = '';
      $Str .= '<select name="Status"';
+     if (defined($mult)){
+         $Str .= ' multiple="multiple" ';
+     }
      if(defined($formName) && $formName ne '' && ! defined($onchange)) {
          $Str .= ' onchange="document.'.$formName.'.submit()"';
      }
- Line 576  sub StatusOptions {
+ Line 911  sub StatusOptions {
      }
      $Str .= ' size="'.$size.'" ';
      $Str .= '>'."\n";
-     $Str .= '<option value="Active" '.$OpSel1.'>'.
+     foreach my $type (['Active',  &mt('Currently Has Access')],
-         &mt('Currently Enrolled').'</option>'."\n";
+ 		      ['Future',  &mt('Will Have Future Access')],
-     $Str .= '<option value="Expired" '.$OpSel2.'>'.
+ 		      ['Expired', &mt('Previously Had Access')],
-         &mt('Previously Enrolled').'</option>'."\n";
+ 		      ['Any',     &mt('Any Access Status')]) {
-     $Str .= '<option value="Any" '.$OpSel3.'>'.
+ 	my ($name,$label) = @$type;
-         &mt('Any Enrollment Status').'</option>'."\n";
+ 	$Str .= '<option value="'.$name.'" ';
+ 	if ($status eq $name) {
+ 	    $Str .= 'selected="selected" ';
+ 	}
+ 	$Str .= '>'.$label.'</option>'."\n";
+     }
      $Str .= '</select>'."\n";
  }
- Line 599  of items completed and an estimate of th
+ Line 940  of items completed and an estimate of th
  =over 4
- =item &Create_PrgWin
+ =item &Create_PrgWin()
  Writes javascript to the client to open a progress window and returns a
  data structure used for bookkeeping.
- Line 630  Inputs
+ Line 971  Inputs
  Returns a hash containing the progress state data structure.
- =item &Update_PrgWin
+ =item &Update_PrgWin()
  Updates the text in the progress indicator.  Does not increment the count.
  See &Increment_PrgWin.
- Line 650  Inputs:
+ Line 991  Inputs:
  Returns: none
- =item Increment_PrgWin
+ =item Increment_PrgWin()
- Increment the count of items completed for the progress window by 1.
+ Increment the count of items completed for the progress window by $step or 1 if no step is provided.
  Inputs:
- Line 665  Inputs:
+ Line 1006  Inputs:
  =item $extraInfo A description of the items being iterated over.  Typically
  'student'.
+ =item $step (optional) counter step. Will be set to default 1 if ommited. step must be greater than 0 or empty.
  =back
  Returns: none
- =item Close_PrgWin
+ =item &Close_PrgWin()
  Closes the progress window.
- Line 693  Returns: none
+ Line 1036  Returns: none
  ########################################################
  ########################################################
- my $uniq=0;
- sub get_uniq_name {
-     $uniq++;
-     return 'uniquename'.$uniq;
- }
  # Create progress
  sub Create_PrgWin {
-     my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
+     my ($r,$number_to_do)=@_;
- 	$inputname)=@_;
-     if (!defined($type)) { $type='popup'; }
-     if (!defined($width)) { $width=55; }
      my %prog_state;
-     $prog_state{'type'}=$type;
-     if ($type eq 'popup') {
- 	$prog_state{'window'}='popwin';
- 	#the whole function called through timeout is due to issues
- 	#in mozilla Read BUG #2665 if you want to know the whole story
- 	&r_print($r,'<script>'.
-         "var popwin;
-          function openpopwin () {
-          popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
-         "popwin.document.writeln(\'<html><head><title>$title</title></head>".
- 	      "<body bgcolor=\"#88DDFF\">".
-               "<h4>$heading</h4>".
-               "<form name=popremain>".
-               '<input type="text" size="'.$width.'" name="remaining" value="'.
- 	      &mt('Starting').'"></form>'.
-               "</body></html>\');".
-         "popwin.document.close();}".
-         "\nwindow.setTimeout(openpopwin,0)</script>");
- 	$prog_state{'formname'}='popremain';
- 	$prog_state{'inputname'}="remaining";
-     } elsif ($type eq 'inline') {
- 	$prog_state{'window'}='window';
- 	if (!$formname) {
- 	    $prog_state{'formname'}=&get_uniq_name();
- 	    &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
- 	} else {
- 	    $prog_state{'formname'}=$formname;
- 	}
- 	if (!$inputname) {
- 	    $prog_state{'inputname'}=&get_uniq_name();
- 	    &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
- 		     '" size="'.$width.'" />');
- 	} else {
- 	    $prog_state{'inputname'}=$inputname;
- 	}
- 	if (!$formname) { &r_print($r,'</form>'); }
- 	&Update_PrgWin($r,\%prog_state,&mt('Starting'));
-     }
      $prog_state{'done'}=0;
      $prog_state{'firststart'}=&Time::HiRes::time();
      $prog_state{'laststart'}=&Time::HiRes::time();
      $prog_state{'max'}=$number_to_do;
+     &Apache::loncommon::LCprogressbar($r);
      return %prog_state;
  }
  # update progress
  sub Update_PrgWin {
      my ($r,$prog_state,$displayString)=@_;
-     &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
+     &Apache::loncommon::LCprogressbarUpdate($r,undef,$displayString);
- 	     $$prog_state{'formname'}.'.'.
- 	     $$prog_state{'inputname'}.'.value="'.
- 	     $displayString.'";</script>');
      $$prog_state{'laststart'}=&Time::HiRes::time();
  }
  # increment progress state
  sub Increment_PrgWin {
-     my ($r,$prog_state,$extraInfo)=@_;
+     my ($r,$prog_state,$extraInfo,$step)=@_;
-     $$prog_state{'done'}++;
+     $step = $step > 0 ? $step : 1;
+     $$prog_state{'done'} += $step;
+     # Catch (max modulo step) <> 0
+     my $current = $$prog_state{'done'};
+     my $last = ($$prog_state{'max'} - $current);
+     if ($last <= 0) {
+         $last = 1;
+         $current = $$prog_state{'max'};
+     }
      my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
-         $$prog_state{'done'} *
+         $current * $last;
- 	($$prog_state{'max'}-$$prog_state{'done'});
      $time_est = int($time_est);
      #
      my $min = int($time_est/60);
      my $sec = $time_est % 60;
-     #
-     my $str;
-     if ($min == 1 && $sec > 1) {
-         $str = '[_2] seconds';
-     } elsif ($min == 1 && $sec < 2) {
-         $str = '1 minute';
-     } elsif ($min < 10 && $sec > 1) {
-         $str = '[_1] minutes, [_2] seconds';
-     } elsif ($min >= 10 || $sec < 2) {
-         $str = '[_1] minutes';
-     }
-     $time_est = &mt($str,$min,$sec);
-     #
      my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
      if ($lasttime > 9) {
          $lasttime = int($lasttime);
- Line 796  sub Increment_PrgWin {
+ Line 1085  sub Increment_PrgWin {
      } else {
          $lasttime = sprintf("%3.2f",$lasttime);
      }
-     if ($lasttime == 1) {
-         $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
+     $sec = 0 if ($min >= 10); # Don't show seconds if remaining time >= 10 min.
-     } else {
+     $sec = 1 if ( ($min == 0) && ($sec == 0) ); # Little cheating: pretend to have 1 second remaining instead of 0 to have something to display
-         $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
-     }
+     my $timeinfo =
-     #
+         &mt('[_1]/[_2]:'
-     my $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
+            .' [quant,_3,minute,minutes,] [quant,_4,second ,seconds ,]remaining'
-     my $user_os      = $ENV{'browser.os'}   if (exists($ENV{'browser.os'}));
+            .' ([quant,_5,second] for '.$extraInfo.')',
-     if (! defined($user_browser) || ! defined($user_os)) {
+             $current,
-         (undef,$user_browser,undef,undef,undef,$user_os) =
+             $$prog_state{'max'},
-                            &Apache::loncommon::decode_user_agent();
+             $min,
-     }
+             $sec,
-     if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
+             $lasttime);
-         $lasttime = '';
+     my $percent=0;
+     if ($$prog_state{'max'}) {
+        $percent=int(100.*$current/$$prog_state{'max'});
      }
-     &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
+     &Apache::loncommon::LCprogressbarUpdate($r,$percent,$timeinfo);
- 	     $$prog_state{'formname'}.'.'.
- 	     $$prog_state{'inputname'}.'.value="'.
- 	     $$prog_state{'done'}.'/'.$$prog_state{'max'}.
- 	     ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
      $$prog_state{'laststart'}=&Time::HiRes::time();
  }
  # close Progress Line
  sub Close_PrgWin {
      my ($r,$prog_state)=@_;
-     if ($$prog_state{'type'} eq 'popup') {
+     &Apache::loncommon::LCprogressbarClose($r);
- 	&r_print($r,'<script>popwin.close()</script>'."\n");
-     } elsif ($$prog_state{'type'} eq 'inline') {
- 	&Update_PrgWin($r,$prog_state,&mt('Done'));
-     }
      undef(%$prog_state);
  }
- sub r_print {
-     my ($r,$to_print)=@_;
-     if ($r) {
- 	$r->print($to_print);
- 	$r->rflush();
-     } else {
- 	print($to_print);
-     }
- }
  # ------------------------------------------------------- Puts directory header
  sub crumbs {
-     my ($uri,$target,$prefix,$form,$size,$noformat)=@_;
+     my ($uri,$target,$prefix,$form,$skiplast)=@_;
-     if (! defined($size)) {
+ # You cannot crumbnify uploaded or adm resources
-         $size = '+2';
+     if ($uri=~/^\/*(uploaded|adm)\//) { return &mt('(Internal Course/Group Content)'); }
-     }
+     if ($target) {
-     my $output='';
+         $target = ' target="'.
-     unless ($noformat) { $output.='<br /><tt><b>'; }
+                   &Apache::loncommon::escape_single($target).'"';
-     $output.='<font size="'.$size.'">'.$prefix.'/';
+     }
-     if ($ENV{'user.adv'}) {
+     my $output='<span class="LC_filename">';
- 	my $path=$prefix.'/';
+     $output.=$prefix.'/';
- 	foreach (split('/',$uri)) {
+     if (($env{'user.adv'}) || ($env{'user.author'})) {
- 	    unless ($_) { next; }
+         my $path=$prefix.'/';
- 	    $path.=$_;
+         foreach my $dir (split('/',$uri)) {
- 	    unless ($path eq $uri) { $path.='/'; }
+             if (! $dir) { next; }
- 	    my $linkpath=$path;
+             $path .= $dir;
- 	    if ($form) {
+             if ($path eq $uri) {
- 		$linkpath="javascript:$form.action='$path';$form.submit();";
+                 if ($skiplast) {
- 	    }
+                     $output.=$dir;
- 	    $output.='<a href="'.$linkpath.'"'.($target?' target="'.$target.'"':'').'>'.$_.'</a>/';
+                     last;
- 	}
+                 }
+             } else {
+                 $path.='/';
+             }
+             my $href_path = &HTML::Entities::encode($path,'<>&"');
+             &Apache::loncommon::inhibit_menu_check(\$href_path);
+             if ($form) {
+                 my $href = 'javascript:'.$form.".action='".$href_path."';".$form.'.submit();';
+                 $output.=qq{<a href="$href"$target>$dir</a>/};
+             } else {
+                 $output.=qq{<a href="$href_path"$target>$dir</a>/};
+             }
+         }
      } else {
- 	$output.=$uri;
+         foreach my $dir (split('/',$uri)) {
+             if (! $dir) { next; }
+             $output.=$dir.'/';
+         }
      }
-     unless ($uri=~/\/$/) { $output=~s/\/$//; }
+     if ($uri !~ m|/$|) { $output=~s|/$||; }
-     return $output.'</font>'.($noformat?'':'</b></tt><br />');
+     $output.='</span>';
+     return $output;
  }
- # ------------------------------------------------- Output headers for HTMLArea
+ # --------------------- A function that generates a window for the spellchecker
- sub htmlareaheaders {
+ sub spellheader {
-     if (&htmlareablocked()) { return ''; }
+     my $start_page=
-     unless (&htmlareabrowser()) { return ''; }
+ 	&Apache::loncommon::start_page('Speller Suggestions',undef,
-     my $lang='en';
+ 				       {'only_body'   => 1,
-     if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
+ 					'js_ready'    => 1,
- 	$lang=&mt('htmlarea_lang');
+ 					'bgcolor'     => '#DDDDDD',
-     }
+ 				        'add_entries' => {
-     return (<<ENDHEADERS);
+ 					    'onload' =>
- <script type="text/javascript">
+                                                'document.forms.spellcheckform.submit()',
- _editor_url='/htmlarea/';
+                                              }
- _editor_lang='$lang';
+ 				        });
+     my $end_page=
+ 	&Apache::loncommon::end_page({'js_ready'  => 1});
+     my $nothing=&javascript_nothing();
+     return (<<ENDCHECK);
+ <script type="text/javascript">
+ // <![CDATA[
+ //<!-- BEGIN LON-CAPA Internal
+ var checkwin;
+ function spellcheckerwindow(string) {
+     var esc_string = string.replace(/\"/g,'&quot;');
+     checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
+     checkwin.document.writeln('$start_page<form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="'+esc_string+'" /><\\/form>$end_page');
+     checkwin.document.close();
+ }
+ // END LON-CAPA Internal -->
+ // ]]>
  </script>
- <script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
+ ENDCHECK
- ENDHEADERS
  }
- # ------------------------------------------------- Activate additional buttons
+ # ---------------------------------- Generate link to spell checker for a field
- sub htmlareaaddbuttons {
+ sub spelllink {
-     if (&htmlareablocked()) { return ''; }
+     my ($form,$field)=@_;
-     unless (&htmlareabrowser()) { return ''; }
+     my $linktext=&mt('Check Spelling');
-     return (<<ENDADDBUTTON);
+     return (<<ENDLINK);
-     var config=new HTMLArea.Config();
+ <a href="javascript:if (typeof(document.$form.onsubmit)!='undefined') { if (document.$form.onsubmit!=null) { document.$form.onsubmit();}};spellcheckerwindow(this.document.forms.$form.$field.value);">$linktext</a>
-     config.registerButton('ed_math','LaTeX Inline',
+ ENDLINK
- 			  '/htmlarea/images/ed_math.gif',false,
- 			    function(editor,id) {
- 			      editor.surroundHTML('&nbsp;<m>\$','\$</m>&nbsp;');
- 			    }
- 			  );
-     config.registerButton('ed_math_eqn','LaTeX Equation',
- 			  '/htmlarea/images/ed_math_eqn.gif',false,
- 			    function(editor,id) {
- 			      editor.surroundHTML(
- 				     '&nbsp;\\n<center><m>\\\\[','\\\\]</m></center>\\n&nbsp;');
- 			    }
- 			  );
-     config.toolbar.push(['ed_math','ed_math_eqn']);
- ENDADDBUTTON
  }
- # ----------------------------------------------------------------- Preferences
+ # ------------------------------------------------- Output headers for CKEditor
- sub disablelink {
+ sub htmlareaheaders {
-     my @fields=@_;
+ 	my $s="";
-     if (defined($#fields)) {
+ 	if (&htmlareabrowser()) {
- 	unless ($#fields>=0) { return ''; }
+ 		$s.=(<<ENDEDITOR);
-     }
+ <script type="text/javascript" src="/ckeditor/ckeditor.js"></script>
-     return '<a href="/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl='.&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
+ ENDEDITOR
+ 	}
+     $s.=(<<ENDJQUERY);
+ <script type="text/javascript" src="/adm/jQuery/js/jquery-1.6.2.min.js"></script>
+ <script type="text/javascript" src="/adm/jQuery/js/jquery-ui-1.8.16.custom.min.js"></script>
+ <link rel="stylesheet" type="text/css" href="/adm/jQuery/css/smoothness/jquery-ui-1.8.16.custom.css" />
+ <script type="text/javascript" src="/adm/jpicker/js/jpicker-1.1.6.min.js" >
+ </script>
+ <link rel="stylesheet" type="text/css" href="/adm/jpicker/css/jPicker-1.1.6.min.css" />
+ <script type='text/javascript' src='/adm/countdown/js/jquery.countdown.js'></script>
+ <link rel="stylesheet" type="text/css" src='/adm/countdown/css/jquery.countdown.css' />
+ ENDJQUERY
+ 	return $s;
  }
- sub enablelink {
+ # ----------------------------------------------------------------- Preferences
-     my @fields=@_;
-     if (defined($#fields)) {
+ # ------------------------------------------------- lang to use in html editor
- 	unless ($#fields>=0) { return ''; }
+ sub htmlarea_lang {
+     my $lang='en';
+     if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
+ 	$lang=&mt('htmlarea_lang');
      }
-     return '<a href="/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl='.&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
+     return $lang;
  }
  # ----------------------------------------- Script to activate only some fields
  sub htmlareaselectactive {
-     my @fields=@_;
+     my ($args) = @_;
      unless (&htmlareabrowser()) { return ''; }
-     if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
+     my $output='<script type="text/javascript" defer="defer">'."\n"
-     my $output='<script type="text/javascript" defer="1">'.
+               .'// <![CDATA['."\n";
- 	&htmlareaaddbuttons();
+     my $lang = &htmlarea_lang();
-     foreach(@fields) {
+     my $fullpage = 'false';
- 	$output.="\nHTMLArea.replace('$_',config);";
+     my ($dragmath_prefix,$dragmath_helpicon,$dragmath_whitespace);
+     if (ref($args) eq 'HASH') {
+         if (exists($args->{'lang'})) {
+             if ($args->{'lang'} ne '') {
+                 $lang = $args->{'lang'};
+             }
+         }
+         if (exists($args->{'fullpage'})) {
+             if ($args->{'fullpage'} eq 'true') {
+                 $fullpage = $args->{'fullpage'};
+             }
+         }
+         if (exists($args->{'dragmath'})) {
+             if ($args->{'dragmath'} ne '') {
+                 $dragmath_prefix = $args->{'dragmath'};
+                 $dragmath_helpicon=&Apache::loncommon::lonhttpdurl("/adm/help/help.png");
+                 $dragmath_whitespace=&Apache::loncommon::lonhttpdurl("/adm/lonIcons/transparent1x1.gif");
+             }
+         }
+     }
+     $output.='
+     function containsBlockHtml(id) {
+ 		var re = $("#"+id).html().search(/(?:\&lt\;|\<)(br|h1|h2|h3|h4|h5|h6|p|ol|ul|table|pre|address|blockquote|center|div)[\s]*((?:[\/]*[\s]*(?:\&gt\;|\>)|(?:\&gt\;|\>)[\s\S]*(?:\&lt\;|\<)\/[\s]*\1[\s]*\(?:\&gt\;|\>))/im);
+     	return (re >= 0);
+     }
+     function startRichEditor(id) {
+     	CKEDITOR.replace(id,
+     		{
+     			customConfig: "/ckeditor/loncapaconfig.js",
+                         language : "'.$lang.'",
+                         fullPage : '.$fullpage.',
+     		}
+     	);
+     }
+     function destroyRichEditor(id) {
+     	CKEDITOR.instances[id].destroy();
      }
-     $output.="\nwindow.status='Activated Editfields';\n</script><br />".
- 	&disablelink(@fields);
+     function editorHandler(event) {
+     	var rawid = $(this).attr("id");
+     	var id = new RegExp("LC_rt_(.*)").exec(rawid)[1];
+     	event.preventDefault();
+     	var rt_enabled  = $(this).hasClass("LC_enable_rt");
+         if (rt_enabled) {
+     		startRichEditor(id);
+ 			$("#LC_rt_"+id).html("<b>&laquo; Plain text</b>");
+ 			$("#LC_rt_"+id).attr("title", "Disable rich text formatting and edit in plain text");
+ 			$("#LC_rt_"+id).addClass("LC_disable_rt");
+ 			$("#LC_rt_"+id).removeClass("LC_enable_rt");
+     	} else {
+ 			destroyRichEditor(id);
+ 			$("#LC_rt_"+id).html("<b>Rich formatting &raquo;</b>");
+ 			$("#LC_rt_"+id).attr("title", "Enable rich text formatting (bold, italic, etc.)");
+ 			$("#LC_rt_"+id).addClass("LC_enable_rt");
+ 			$("#LC_rt_"+id).removeClass("LC_disable_rt");
+ 	}';
+     if ($dragmath_prefix ne '') {
+         $output .= "\n                 var visible = '';
+                                        if (rt_enabled) {
+                                            visible = 'none';
+                                        }
+                                        editmath_visibility(id,visible);\n";
+     }
+     $output .= '
+     }
+     $(document).ready(function(){
+ 		$(".LC_richAlwaysOn").each(function() {
+ 			startRichEditor($(this).attr("id"));
+ 		});
+ 		$(".LC_richDetectHtml").each(function() {
+ 			var id = $(this).attr("id");
+                         var rt_enabled = containsBlockHtml(id);
+ 			if(rt_enabled) {
+ 				$(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Disable rich text formatting and edit in plain text\" class=\"LC_disable_rt\"><b>&laquo; Plain text</b></a></div>");
+ 				startRichEditor(id);
+ 				$("#LC_rt_"+id).click(editorHandler);
+ 			}
+ 			else {
+ 				$(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Enable rich text formatting (bold, italic, etc.)\" class=\"LC_enable_rt\"><b>Rich formatting &raquo;</b></a></div>");
+ 				$("#LC_rt_"+id).click(editorHandler);
+ 			}';
+     if ($dragmath_prefix ne '') {
+         $output .= "\n                 var visible = '';
+                                        if (rt_enabled) {
+                                            visible = 'none';
+                                        }
+                                        editmath_visibility(id,visible);\n";
+     }
+     $output .= '
+ 		});
+ 		$(".LC_richDefaultOn").each(function() {
+ 			var id = $(this).attr("id");
+ 			$(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Disable rich text formatting and edit in plain text\" class=\"LC_disable_rt\"><b>&laquo; Plain text</b></a></div>");
+ 			startRichEditor(id);
+ 			$("#LC_rt_"+id).click(editorHandler);
+ 		});
+ 		$(".LC_richDefaultOff").each(function() {
+ 			var id = $(this).attr("id");
+ 			$(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Enable rich text formatting (bold, italic, etc.)\" class=\"LC_enable_rt\"><b>Rich formatting &raquo;</b></a></div>");
+ 			$("#LC_rt_"+id).click(editorHandler);
+ 		});
+                 $.fn.jPicker.defaults.images.clientPath="/adm/jpicker/images/";
+                 $(".colorchooser").jPicker();
+ 	});
+ ';
+     # Code to put a due date countdown in 'duedatecountdown' span.
+     # This is currently located in the breadcrumb headers.
+     # note that the dueDateLayout is internatinoalized below.
+     # Here document is used to support the substitution into the javascript below.
+     # ..which unforunately necessitates escaping the $'s in the javascript.
+     # There are several times of importance
+     #
+     # serverDueDate -  The absolute time at which the problem expires.
+     # serverTime    -  The server's time when the problem finished computing.
+     # clientTime    -  The client's time...as close to serverTime as possible.
+     #                  The clientTime will be slightly later due to
+     #                  1. The latency between problem computation and
+     #                     the first network action.
+     #                  2. The time required between the page load-start and the actual
+     #                     initial javascript execution that got clientTime.
+     # These are used as follows:
+     #   The difference between clientTime and serverTime are used to
+     #   correct for differences in clock settings between the browser's system and the
+     #   server's.
+     #
+     #   The difference between clientTime and the time at which the ready() method
+     #   starts executing is used to estimate latencies for page load and submission.
+     #   Since this is an estimate, it is doubled.  The latency estimate + one minute
+     #   is used to determine when the countdown timer turns red to warn the user
+     #   to think about submitting.
+     my $dueDateLayout = '<b>' .  &mt('Due in: {dn} {dl} {hnn}{sep}{mnn}{sep}{snn} - Submit early!') . '</b>';
+     $output .= <<JAVASCRIPT;
+     var documentReadyTime;
+ \$(document).ready(function() {
+    if (typeof(dueDate) != "undefined") {
+        documentReadyTime = (new Date()).getTime();
+       \$("#duedatecountdown").countdown({until: dueDate, compact: true,
+          layout: "$dueDateLayout",
+          onTick: function (periods) {
+ 	    var latencyEstimate = (documentReadyTime - clientTime) * 2;
+             if(\$.countdown.periodsToSeconds(periods) < (60 + latencyEstimate)) {
+                \$(this).css("color", "red");   //Highlight last minute.
+             }
+          }
+       });
+    }
+ });
+ JAVASCRIPT
+     if ($dragmath_prefix ne '') {
+         $output .= '
+      function editmath_visibility(id,value) {
+          if ((id == "") || (id == null)) {
+              return;
+          }
+          var mathid = "'.$dragmath_prefix.'_"+id;
+          mathele = document.getElementById(mathid);
+          if (mathele == null) {
+              return;
+          }
+          mathele.style.display = value;
+          var mathhelpicon = "'.$dragmath_prefix.'helpicon'.'_"+id;
+          mathhelpiconele = document.getElementById(mathhelpicon);
+          if (mathhelpiconele == null) {
+              return;
+          }
+          if (value == "none") {
+              mathhelpiconele.src = "'.$dragmath_whitespace.'";
+          } else {
+              mathhelpiconele.src = "'.$dragmath_helpicon.'";
+          }
+      }
+ ';
+     }
+     $output.="\nwindow.status='Activated Editfields';\n"
+             .'// ]]>'."\n"
+             .'</script>';
      return $output;
  }
  # --------------------------------------------------------------------- Blocked
  sub htmlareablocked {
-     unless ($ENV{'environment.wysiwygeditor'} eq 'on') { return 1; }
+     unless ($env{'environment.wysiwygeditor'} eq 'on') { return 1; }
      return 0;
  }
- Line 958  sub htmlareabrowser {
+ Line 1450  sub htmlareabrowser {
      return 1;
  }
+ #
+ # Should the "return to content" link be shown?
+ #
+ sub show_return_link {
+     unless ($env{'request.course.id'}) { return 0; }
+     if ($env{'request.noversionuri'}=~m{^/priv/} ||
+         $env{'request.uri'}=~m{^/~}) { return 1; }
+     if (($env{'request.noversionuri'} =~ m{^/adm/(viewclasslist|navmaps)($|\?)})
+         || ($env{'request.noversionuri'} =~ m{^/adm/.*/aboutme($|\?)})) {
+         return if ($env{'form.register'});
+     }
+     return (($env{'request.noversionuri'}=~m{^/(res|public)/} &&
+              $env{'request.symb'} eq '')
+             ||
+             ($env{'request.noversionuri'}=~ m{^/cgi-bin/printout.pl})
+             ||
+             (($env{'request.noversionuri'}=~/^\/adm\//) &&
+              ($env{'request.noversionuri'}!~/^\/adm\/wrapper\//) &&
+              ($env{'request.noversionuri'}!~
+               m{^/adm/.*/(smppg|bulletinboard)($|\?)})
+            ));
+ }
+ ##
+ #   Set the dueDate variable...note this is done in the timezone
+ #   of the browser.
+ #
+ # @param epoch relative time at which the problem is due.
+ #
+ # @return the javascript fragment to set the date:
+ #
+ sub set_due_date {
+     my $dueStamp = shift;
+     my $duems    = $dueStamp * 1000; # Javascript Date object needs ms not seconds.
+     my $now = time()*1000;
+     # This slightly obscure bit of javascript sets the dueDate variable
+     # to the time in the browser at which the problem was due.
+     # The code should correct for gross differences between the server
+     # and client's time setting
+     my $js = "
+ <script type='text/javascript'>
+   //<![CDATA[
+ var serverDueDate = $duems;
+ var serverTime    = $now;
+ var clientTime    = (new Date()).getTime();
+ var dueDate       = new Date(serverDueDate + (clientTime - serverTime));
+   //]]>
+ </script>
+ ";
+     return $js;
+ }
+ ##
+ # Sets the time at which the problem finished computing.
+ # This just updates the serverTime and clientTime variables above.
+ # Calling this in e.g. end_problem provides a better estimate of the
+ # difference beetween the server and client time setting as
+ # the difference contains less of the latency/problem compute time.
+ #
+ sub set_compute_end_time {
+     my $now = time()*1000;	# Javascript times are in ms.
+     my $js = "
+ <script type='text/javascript'>
+ //<![CDATA[
+ serverTime = $now;
+ clientTime = (new Date()).getTime();
+ //]]>
+ </script>
+ ";
+     return $js;
+ }
  ############################################################
  ############################################################
  =pod
- =item breadcrumbs
+ =item &breadcrumbs()
  Compiles the previously registered breadcrumbs into an series of links.
- FAQ and BUG links will be placed on the left side of the table if they
- are defined for the last registered breadcrumb.
  Additionally supports a 'component', which will be displayed on the
- right side of the table (without a link).
+ right side of the breadcrumbs enclosing div (without a link).
  A link to help for the component will be included if one is specified.
  All inputs can be undef without problems.
- Inputs: $color (the background color of the table returned),
+ Inputs: $component (the text on the right side of the breadcrumbs trail),
-         $component (the large text on the right side of the table),
          $component_help
-         $function (role to get colors from)
-         $domain   (domian of role)
          $menulink (boolean, controls whether to include a link to /adm/menu)
+         $helplink (if 'nohelp' don't include the orange help link)
+         $css_class (optional name for the class to apply to the table for CSS)
+         $no_mt (optional flag, 1 if &mt() is _not_ to be applied to $component
+            when including the text on the right.
  Returns a string containing breadcrumbs for the current page.
- =item clear_breadcrumbs
+ =item &clear_breadcrumbs()
  Clears the previously stored breadcrumbs.
- =item add_breadcrumb
+ =item &add_breadcrumb()
  Pushes a breadcrumb on the stack of crumbs.
  input: $breadcrumb, a hash reference.  The keys 'href','title', and 'text'
  are required.  If present the keys 'faq' and 'bug' will be used to provide
- links to the FAQ and bug sites.
+ links to the FAQ and bug sites. If the key 'no_mt' is present the 'title'
+ and 'text' values won't be sent through &mt()
  returns: nothing
- Line 1003  returns: nothing
+ Line 1578  returns: nothing
  ############################################################
  {
      my @Crumbs;
+     my %tools = ();
      sub breadcrumbs {
-         my ($color,$component,$component_help,$function,$domain,$menulink,
+         my ($component,$component_help,$menulink,$helplink,$css_class,$no_mt, $CourseBreadcrumbs) = @_;
- 	    $helplink) = @_;
-         if (! defined($color)) {
-             if (! defined($function)) {
-                 $function = &Apache::loncommon::get_users_function();
-             }
-             $color = &Apache::loncommon::designparm($function.'.tabbg',
-                                                     $domain);
-         }
-         #
-         my $Str = "\n".
-             '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
-             '<tr><td bgcolor="'.$color.'">'.
-             '<font size="-1">';
          #
+         $css_class ||= 'LC_breadcrumbs';
          # Make the faq and bug data cascade
-         my $faq = '';
+         my $faq  = '';
-         my $bug = '';
+         my $bug  = '';
+         my $help = '';
+         # Crumb Symbol
+         my $crumbsymbol = '&raquo;';
          # The last breadcrumb does not have a link, so handle it separately.
          my $last = pop(@Crumbs);
          #
          # The first one should be the course or a menu link
- 	if (!defined($menulink)) { $menulink=1; }
+         if (!defined($menulink)) { $menulink=1; }
          if ($menulink) {
              my $description = 'Menu';
-             if (exists($ENV{'request.course.id'}) &&
+             my $no_mt_descr = 0;
-                 $ENV{'request.course.id'} ne '') {
+             if ((exists($env{'request.course.id'})) &&
+                 ($env{'request.course.id'} ne '') &&
+                 ($env{'course.'.$env{'request.course.id'}.'.description'} ne '')) {
                  $description =
-                     $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
+                     $env{'course.'.$env{'request.course.id'}.'.description'};
+                 $no_mt_descr = 1;
              }
-             unshift(@Crumbs,{
+             $menulink =  {  href   =>'/adm/menu',
-                     href   =>'/adm/menu',
+                             title  =>'Go to main menu',
-                     title  =>'Go to main menu',
+                             target =>'_top',
-                     target =>'_top',
+                             text   =>$description,
-                     text   =>$description,
+                             no_mt  =>$no_mt_descr, };
-                 });
+             if($last) {
-         }
+                 #$last set, so we have some crumbs
-         my $links .=
+                 unshift(@Crumbs,$menulink);
-             join('-&gt;',
+             } else {
-                  map {
+                 #only menulink crumb present
-                      $faq = $_->{'faq'} if (exists($_->{'faq'}));
+                 $last = $menulink;
-                      $bug = $_->{'bug'} if (exists($_->{'bug'}));
+             }
-                      my $result = '<a href="'.$_->{'href'}.'" ';
+         }
-                      if (defined($_->{'target'}) && $_->{'target'} ne '') {
+         my $links;
-                          $result .= 'target="'.$_->{'target'}.'" ';
+         if ((&show_return_link) && (!$CourseBreadcrumbs)) {
-                      }
+             my $alttext = &mt('Go Back');
-                      $result .='title="'.&mt($_->{'title'}).'">'.
+             $links=&htmltag( 'a',"<img src='/res/adm/pages/reload.png' border='0' style='vertical-align:middle;' alt='$alttext' />",
-                          &mt($_->{'text'}).'</a>';
+                             { href => '/adm/flip?postdata=return:',
-                      $result;
+                               title => &mt("Back to most recent content resource") });
-                      } @Crumbs
+             $links=&htmltag('li',$links);
-                  );
+         }
-         $links .= '-&gt;' if ($links ne '');
+         $links.= join "",
-         $links .= '<b>'.&mt($last->{'text'}).'</b>';
+              map {
-         #
+                  $faq  = $_->{'faq'}  if (exists($_->{'faq'}));
+                  $bug  = $_->{'bug'}  if (exists($_->{'bug'}));
+                  $help = $_->{'help'} if (exists($_->{'help'}));
+                  my $result = $_->{no_mt} ? $_->{text} : &mt($_->{text});
+                  if ($_->{href}){
+                      $result = &htmltag( 'a', $result,
+                        { href   => $_->{href},
+                          title  => $_->{no_mt} ? $_->{title} : &mt($_->{title}),
+                          target => $_->{target}, });
+                  }
+                  $result = &htmltag( 'li', "$result $crumbsymbol");
+              } @Crumbs;
+         #should the last Element be translated?
+         my $lasttext = $last->{'no_mt'} ? $last->{'text'}
+                      : mt( $last->{'text'} );
+         # last breadcrumb is the first order heading of a page
+         # for course breadcrumbs it's just bold
+         $links .= &htmltag( 'li', htmltag($CourseBreadcrumbs ? 'b' : 'h1',
+                 $lasttext), {title => $lasttext});
+ 	$links .=   '<li> <span id="duedatecountdown"></span></li>';
          my $icons = '';
-         $faq = $last->{'faq'} if (exists($last->{'faq'}));
+         $faq  = $last->{'faq'}  if (exists($last->{'faq'}));
-         $bug = $last->{'bug'} if (exists($last->{'bug'}));
+         $bug  = $last->{'bug'}  if (exists($last->{'bug'}));
+         $help = $last->{'help'} if (exists($last->{'help'}));
+         $component_help=($component_help?$component_help:$help);
  #        if ($faq ne '') {
  #            $icons .= &Apache::loncommon::help_open_faq($faq);
  #        }
  #        if ($bug ne '') {
  #            $icons .= &Apache::loncommon::help_open_bug($bug);
  #        }
- 	if ($helplink ne 'nohelp') {
+         if ($faq ne '' || $component_help ne '' || $bug ne '') {
- 	    $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
+             $icons .= &Apache::loncommon::help_open_menu($component,
- 	}
+                                                          $component_help,
-         if ($icons ne '') {
+                                                          $faq,$bug);
-             $Str .= $icons.'&nbsp;';
          }
          #
-         $Str .= $links.'</font></td>';
-         #
-         if (defined($component)) {
-             $Str .= '<td align="right" bgcolor="'.$color.'">'.
+         unless ($CourseBreadcrumbs) {
-                 '<font size="+1">'.&mt($component).'</font></td>';
+             $links = &htmltag('ol',  $links, { id => "LC_MenuBreadcrumbs"   });
+         } else {
+             $links = &htmltag('ul',  $links, { class => "LC_CourseBreadcrumbs" });
          }
-         $Str .= '</tr></table>'."\n";
-         #
+         if ($component) {
+             $links = &htmltag('span',
+                              ( $no_mt ? $component : mt($component) ).
+                              ( $icons ? $icons : '' ),
+                              { class => 'LC_breadcrumbs_component' } )
+                              .$links
+ ;
+         }
+         &render_tools(\$links);
+         $links = &htmltag('div', $links,
+                         { id => "LC_breadcrumbs" }) unless ($CourseBreadcrumbs) ;
+         &render_advtools(\$links);
          # Return the @Crumbs stack to what we started with
          push(@Crumbs,$last);
          shift(@Crumbs);
-         #
-         return $Str;
+         # Return the breadcrumb's line
+         return "$links";
      }
      sub clear_breadcrumbs {
          undef(@Crumbs);
+         undef(%tools);
      }
      sub add_breadcrumb {
-         push (@Crumbs,@_);
+         push(@Crumbs,@_);
+     }
+ =item &add_breadcrumb_tool($category, $html)
+ Adds $html to $category of the breadcrumb toolbar container.
+ $html is usually a link to a page that invokes a function on the currently
+ displayed data (e.g. print when viewing a problem)
+ Currently there are 3 possible values for $category:
+ =over
+ =item navigation
+ left of breadcrumbs line
+ =item tools
+ right of breadcrumbs line
+ =item advtools
+ advanced tools shown in a separate box below breadcrumbs line
+ =back
+ returns: nothing
+ =cut
+     sub add_breadcrumb_tool {
+         my ($category, @html) = @_;
+         return unless @html;
+         if (!keys(%tools)) {
+             %tools = ( navigation => [], tools => [], advtools => []);
+         }
+         #this cleans data received from lonmenu::innerregister
+         @html = grep {defined $_ && $_ ne ''} @html;
+         for (@html) {
+             s/align="(right|left)"//;
+ #            s/<span.*?\/span>// if $category ne 'advtools';
+         }
+         push @{$tools{$category}}, @html;
+     }
+ =item &clear_breadcrumb_tools()
+ Clears the breadcrumb toolbar container.
+ returns: nothing
+ =cut
+     sub clear_breadcrumb_tools {
+         undef(%tools);
+     }
+ =item &render_tools(\$breadcrumbs)
+ Creates html for breadcrumb tools (categories navigation and tools) and inserts
+ \$breadcrumbs at the correct position.
+ input: \$breadcrumbs - a reference to the string containing prepared
+ breadcrumbs.
+ returns: nothing
+ =cut
+ #TODO might split this in separate functions for each category
+     sub render_tools {
+         my ($breadcrumbs) = @_;
+         return unless (keys(%tools));
+         my $navigation = list_from_array($tools{navigation},
+                    { listattr => { class=>"LC_breadcrumb_tools_navigation" } });
+         my $tools = list_from_array($tools{tools},
+                    { listattr => { class=>"LC_breadcrumb_tools_tools" } });
+         $$breadcrumbs = list_from_array([$navigation, $tools, $$breadcrumbs],
+                    { listattr => { class=>'LC_breadcrumb_tools_outerlist' } });
+     }
+ =pod
+ =item &render_advtools(\$breadcrumbs)
+ Creates html for advanced tools (category advtools) and inserts \$breadcrumbs
+ at the correct position.
+ input: \$breadcrumbs - a reference to the string containing prepared
+ breadcrumbs (after render_tools call).
+ returns: nothing
+ =cut
+     sub render_advtools {
+         my ($breadcrumbs) = @_;
+         return unless     (defined $tools{'advtools'})
+                       and (scalar(@{$tools{'advtools'}}) > 0);
+         $$breadcrumbs .= Apache::loncommon::head_subbox(
+                             funclist_from_array($tools{'advtools'}) );
      }
  } # End of scope for @Crumbs
- Line 1103  returns: nothing
+ Line 1828  returns: nothing
  ############################################################
  ############################################################
+ # Nested table routines.
+ #
+ # Routines to display form items in a multi-row table with 2 columns.
+ # Uses nested tables to divide form elements into segments.
+ # For examples of use see loncom/interface/lonnotify.pm
+ #
+ # Can be used in following order: ...
+ # &start_pick_box()
+ # row1
+ # row2
+ # row3   ... etc.
+ # &submit_row()
+ # &end_pick_box()
+ #
+ # where row1, row 2 etc. are chosen from &role_select_row,&course_select_row,
+ # &status_select_row and &email_default_row
+ #
+ # Can also be used in following order:
+ #
+ # &start_pick_box()
+ # &row_title()
+ # &row_closure()
+ # &row_title()
+ # &row_closure()  ... etc.
+ # &submit_row()
+ # &end_pick_box()
+ #
+ # In general a &submit_row() call should proceed the call to &end_pick_box(),
+ # as this routine adds a button for form submission.
+ # &submit_row() does not require a &row_closure after it.
+ #
+ # &start_pick_box() creates a bounding table with 1-pixel wide black border.
+ # rows should be placed between calls to &start_pick_box() and &end_pick_box.
+ #
+ # &row_title() adds a title in the left column for each segment.
+ # &row_closure() closes a row with a 1-pixel wide black line.
+ #
+ # &role_select_row() provides a select box from which to choose 1 or more roles
+ # &course_select_row provides ways of picking groups of courses
+ #    radio buttons: all, by category or by picking from a course picker pop-up
+ #      note: by category option is only displayed if a domain has implemented
+ #                selection by year, semester, department, number etc.
+ #
+ # &status_select_row() provides a select box from which to choose 1 or more
+ #  access types (current access, prior access, and future access)
+ #
+ # &email_default_row() provides text boxes for default e-mail suffixes for
+ #  different authentication types in a domain.
+ #
+ # &row_title() and &row_closure() are called internally by the &*_select_row
+ # routines, but can also be called directly to start and end rows which have
+ # needs that are not accommodated by the *_select_row() routines.
+ { # Start: row_count block for pick_box
+ my @row_count;
+ sub start_pick_box {
+     my ($css_class) = @_;
+     if (defined($css_class)) {
+ 	$css_class = 'class="'.$css_class.'"';
+     } else {
+ 	$css_class= 'class="LC_pick_box"';
+     }
+     unshift(@row_count,0);
+     my $output = <<"END";
+  <table $css_class>
+ END
+     return $output;
+ }
+ sub end_pick_box {
+     shift(@row_count);
+     my $output = <<"END";
+        </table>
+ END
+     return $output;
+ }
+ sub row_headline {
+     my $output = <<"END";
+            <tr><td colspan="2">
+ END
+     return $output;
+ }
+ sub row_title {
+     my ($title,$css_title_class,$css_value_class, $css_value_furtherAttributes) = @_;
+     $row_count[0]++;
+     my $css_class = ($row_count[0] % 2)?'LC_odd_row':'LC_even_row';
+     $css_title_class ||= 'LC_pick_box_title';
+     $css_title_class = 'class="'.$css_title_class.'"';
+     $css_value_class ||= 'LC_pick_box_value';
+     if ($title ne '') {
+         $title .= ':';
+     }
+     my $output = <<"ENDONE";
+            <tr class="LC_pick_box_row" $css_value_furtherAttributes>
+             <td $css_title_class>
+ 	       $title
+             </td>
+             <td class="$css_value_class $css_class">
+ ENDONE
+     return $output;
+ }
+ sub row_closure {
+     my ($no_separator) =@_;
+     my $output = <<"ENDTWO";
+             </td>
+            </tr>
+ ENDTWO
+     if (!$no_separator) {
+         $output .= <<"ENDTWO";
+            <tr>
+             <td colspan="2" class="LC_pick_box_separator">
+             </td>
+            </tr>
+ ENDTWO
+     }
+     return $output;
+ }
+ } # End: row_count block for pick_box
+ sub role_select_row {
+     my ($roles,$title,$css_class,$show_separate_custom,$cdom,$cnum) = @_;
+     my $crstype = 'Course';
+     if ($cdom ne '' && $cnum ne '') {
+         $crstype = &Apache::loncommon::course_type($cdom.'_'.$cnum);
+     }
+     my $output;
+     if (defined($title)) {
+         $output = &row_title($title,$css_class);
+     }
+     $output .= qq|
+                                   <select name="roles" multiple="multiple">\n|;
+     foreach my $role (@$roles) {
+         my $plrole;
+         if ($role eq 'ow') {
+             $plrole = &mt('Course Owner');
+         } elsif ($role eq 'cr') {
+             if ($show_separate_custom) {
+                 if ($cdom ne '' && $cnum ne '') {
+                     my %course_customroles = &course_custom_roles($cdom,$cnum);
+                     foreach my $crrole (sort(keys(%course_customroles))) {
+                         my ($plcrrole) = ($crrole =~ m|^cr/[^/]+/[^/]+/(.+)$|);
+                         $output .= '  <option value="'.$crrole.'">'.$plcrrole.
+                                    '</option>';
+                     }
+                 }
+             } else {
+                 $plrole = &mt('Custom Role');
+             }
+         } else {
+             $plrole=&Apache::lonnet::plaintext($role,$crstype);
+         }
+         if (($role ne 'cr') || (!$show_separate_custom)) {
+             $output .= '  <option value="'.$role.'">'.$plrole.'</option>';
+         }
+     }
+     $output .= qq|                </select>\n|;
+     if (defined($title)) {
+         $output .= &row_closure();
+     }
+     return $output;
+ }
+ sub course_select_row {
+     my ($title,$formname,$totcodes,$codetitles,$idlist,$idlist_titles,
+ 	$css_class,$crstype,$standardnames) = @_;
+     my $output = &row_title($title,$css_class);
+     $output .= &course_selection($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype,$standardnames);
+     $output .= &row_closure();
+     return $output;
+ }
+ sub course_selection {
+     my ($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype,$standardnames) = @_;
+     my $output = qq|
+ <script type="text/javascript">
+ // <![CDATA[
+     function coursePick (formname) {
+         for  (var i=0; i<formname.coursepick.length; i++) {
+             if (formname.coursepick[i].value == 'category') {
+                 courseSet('');
+             }
+             if (!formname.coursepick[i].checked) {
+                 if (formname.coursepick[i].value == 'specific') {
+                     formname.coursetotal.value = 0;
+                     formname.courselist = '';
+                 }
+             }
+         }
+     }
+     function setPick (formname) {
+         for  (var i=0; i<formname.coursepick.length; i++) {
+             if (formname.coursepick[i].value == 'category') {
+                 formname.coursepick[i].checked = true;
+             }
+             formname.coursetotal.value = 0;
+             formname.courselist = '';
+         }
+     }
+ // ]]>
+ </script>
+     |;
+     my ($allcrs,$pickspec);
+     if ($crstype eq 'Community') {
+         $allcrs = &mt('All communities');
+         $pickspec = &mt('Pick specific communities:');
+     } else {
+         $allcrs = &mt('All courses');
+         $pickspec = &mt('Pick specific course(s):');
+     }
+     my $courseform='<b>'.&Apache::loncommon::selectcourse_link
+                      ($formname,'pickcourse','pickdomain','coursedesc','',1,$crstype).'</b>';
+         $output .= '<input type="radio" name="coursepick" value="all" onclick="coursePick(this.form)" />'.$allcrs.'<br />';
+     if ($totcodes > 0) {
+         my $numtitles = @$codetitles;
+         if ($numtitles > 0) {
+             $output .= '<input type="radio" name="coursepick" value="category" onclick="coursePick(this.form);alert('."'".&mt('Choose categories, from left to right')."'".')" />'.&mt('Pick courses by category:').' <br />';
+             $output .= '<table><tr><td>'.$$codetitles[0].'<br />'."\n".
+                '<select name="'.$standardnames->[0].
+                '" onChange="setPick(this.form);courseSet('."'$$codetitles[0]'".')">'."\n".
+                ' <option value="-1" />Select'."\n";
+             my @items = ();
+             my @longitems = ();
+             if ($$idlist{$$codetitles[0]} =~ /","/) {
+                 @items = split(/","/,$$idlist{$$codetitles[0]});
+             } else {
+                 $items[0] = $$idlist{$$codetitles[0]};
+             }
+             if (defined($$idlist_titles{$$codetitles[0]})) {
+                 if ($$idlist_titles{$$codetitles[0]} =~ /","/) {
+                     @longitems = split(/","/,$$idlist_titles{$$codetitles[0]});
+                 } else {
+                     $longitems[0] = $$idlist_titles{$$codetitles[0]};
+                 }
+                 for (my $i=0; $i<@longitems; $i++) {
+                     if ($longitems[$i] eq '') {
+                         $longitems[$i] = $items[$i];
+                     }
+                 }
+             } else {
+                 @longitems = @items;
+             }
+             for (my $i=0; $i<@items; $i++) {
+                 $output .= ' <option value="'.$items[$i].'">'.$longitems[$i].'</option>';
+             }
+             $output .= '</select></td>';
+             for (my $i=1; $i<$numtitles; $i++) {
+                 $output .= '<td>'.$$codetitles[$i].'<br />'."\n".
+                           '<select name="'.$standardnames->[$i].
+                           '" onChange="courseSet('."'$$codetitles[$i]'".')">'."\n".
+                           '<option value="-1">&lt;-Pick '.$$codetitles[$i-1].'</option>'."\n".
+                           '</select>'."\n".
+                           '</td>';
+             }
+             $output .= '</tr></table><br />';
+         }
+     }
+     $output .= '<input type="radio" name="coursepick" value="specific" onclick="coursePick(this.form);opencrsbrowser('."'".$formname."','dccourse','dcdomain','coursedesc','','1','$crstype'".')" />'.$pickspec.' '.$courseform.'&nbsp;&nbsp;<input type="text" value="0" size="4" name="coursetotal" /><input type="hidden" name="courselist" value="" />selected.<br />'."\n";
+     return $output;
+ }
+ sub status_select_row {
+     my ($types,$title,$css_class) = @_;
+     my $output;
+     if (defined($title)) {
+         $output = &row_title($title,$css_class,'LC_pick_box_select');
+     }
+     $output .= qq|
+                                     <select name="types" multiple="multiple">\n|;
+     foreach my $status_type (sort(keys(%{$types}))) {
+         $output .= '  <option value="'.$status_type.'">'.$$types{$status_type}.'</option>';
+     }
+     $output .= qq|                   </select>\n|;
+     if (defined($title)) {
+         $output .= &row_closure();
+     }
+     return $output;
+ }
+ sub email_default_row {
+     my ($authtypes,$title,$descrip,$css_class) = @_;
+     my $output = &row_title($title,$css_class);
+     $output .= $descrip.
+ 	&Apache::loncommon::start_data_table().
+ 	&Apache::loncommon::start_data_table_header_row().
+ 	'<th>'.&mt('Authentication Method').'</th>'.
+ 	'<th align="right">'.&mt('Username -> e-mail conversion').'</th>'."\n".
+ 	&Apache::loncommon::end_data_table_header_row();
+     my $rownum = 0;
+     foreach my $auth (sort(keys(%{$authtypes}))) {
+         my ($userentry,$size);
+         if ($auth =~ /^krb/) {
+             $userentry = '';
+             $size = 25;
+         } else {
+             $userentry = 'username@';
+             $size = 15;
+         }
+         $output .= &Apache::loncommon::start_data_table_row().
+ 	    '<td>  '.$$authtypes{$auth}.'</td>'.
+ 	    '<td align="right">'.$userentry.
+ 	    '<input type="text" name="'.$auth.'" size="'.$size.'" /></td>'.
+ 	    &Apache::loncommon::end_data_table_row();
+     }
+     $output .= &Apache::loncommon::end_data_table();
+     $output .= &row_closure();
+     return $output;
+ }
+ sub submit_row {
+     my ($title,$cmd,$submit_text,$css_class) = @_;
+     my $output = &row_title($title,$css_class,'LC_pick_box_submit');
+     $output .= qq|
+              <br />
+              <input type="hidden" name="command" value="$cmd" />
+              <input type="submit" value="$submit_text"/> &nbsp;
+              <br /><br />
+             \n|;
+     return $output;
+ }
+ sub course_custom_roles {
+     my ($cdom,$cnum) = @_;
+     my %returnhash=();
+     my %coursepersonnel=&Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
+     foreach my $person (sort(keys(%coursepersonnel))) {
+         my ($role) = ($person =~ /^([^:]+):/);
+         my ($end,$start) = split(/:/,$coursepersonnel{$person});
+         if ($end == -1 && $start == -1) {
+             next;
+         }
+         if ($role =~ m|^cr/[^/]+/[^/]+/[^/]|) {
+             $returnhash{$role} ++;
+         }
+     }
+     return %returnhash;
+ }
+ sub resource_info_box {
+    my ($symb,$onlyfolderflag,$stuvcurrent,$stuvdisp)=@_;
+    my $return='';
+    if ($stuvcurrent ne '') {
+        $return = '<div class="LC_left_float">';
+    }
+    if ($symb) {
+        $return.=&Apache::loncommon::start_data_table();
+        my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symb);
+        my $folder=&Apache::lonnet::gettitle($map);
+        $return.=&Apache::loncommon::start_data_table_row().
+                     '<th align="left">'.&mt('Folder:').'</th><td>'.$folder.'</td>'.
+                     &Apache::loncommon::end_data_table_row();
+        unless ($onlyfolderflag) {
+           $return.=&Apache::loncommon::start_data_table_row().
+                     '<th align="left">'.&mt('Resource:').'</th><td>'.&Apache::lonnet::gettitle($symb).'</td>'.
+                     &Apache::loncommon::end_data_table_row();
+        }
+        if ($stuvcurrent ne '') {
+            $return .= &Apache::loncommon::start_data_table_row().
+                     '<th align="left">'.&mt("Student's current version:").'</th><td>'.$stuvcurrent.'</td>'.
+                     &Apache::loncommon::end_data_table_row();
+        }
+        if ($stuvdisp ne '') {
+            $return .= &Apache::loncommon::start_data_table_row().
+                     '<th align="left">'.&mt("Student's version displayed:").'</th><td>'.$stuvdisp.'</td>'.
+                     &Apache::loncommon::end_data_table_row();
+        }
+        $return.=&Apache::loncommon::end_data_table();
+     } else {
+        $return='<p><span class="LC_error">'.&mt('No context provided.').'</span></p>';
+     }
+     if ($stuvcurrent ne '') {
+         $return .= '</div>';
+     }
+     return $return;
+ }
+ ##############################################
+ ##############################################
+ # topic_bar
+ #
+ # Generates a div containing an (optional) number with a white background followed by a
+ # title with a background color defined in the corresponding CSS: LC_topic_bar
+ # Inputs:
+ # 1. number to display.
+ #    If input for number is empty only the title will be displayed.
+ # 2. title text to display.
+ # Outputs - a scalar containing html mark-up for the div.
+ sub topic_bar {
+     my ($num,$title) = @_;
+     my $number = '';
+     if ($num ne '') {
+         $number = '<span>'.$num.'</span>';
+     }
+     return '<div class="LC_topic_bar">'.$number.$title.'</div>';
+ }
+ ##############################################
+ ##############################################
+ # echo_form_input
+ #
+ # Generates html markup to add form elements from the referrer page
+ # as hidden form elements (values encoded) in the new page.
+ #
+ # Intended to support two types of use
+ # (a) to allow backing up to earlier pages in a multi-page
+ # form submission process using a breadcrumb trail.
+ #
+ # (b) to allow the current page to be reloaded with form elements
+ # set on previous page to remain unchanged.  An example would
+ # be where the a page containing a dynamically-built table of data is
+ # is to be redisplayed, with only the sort order of the data changed.
+ #
+ # Inputs:
+ # 1. Reference to array of form elements in the submitted form on
+ # the referrer page which are to be excluded from the echoed elements.
+ #
+ # 2. Reference to array of regular expressions, which if matched in the
+ # name of the form element n the referrer page will be omitted from echo.
+ #
+ # Outputs: A scalar containing the html markup for the echoed form
+ # elements (all as hidden elements, with values encoded).
+ sub echo_form_input {
+     my ($excluded,$regexps) = @_;
+     my $output = '';
+     foreach my $key (keys(%env)) {
+         if ($key =~ /^form\.(.+)$/) {
+             my $name = $1;
+             my $match = 0;
+             if (ref($excluded) eq 'ARRAY') {
+                 next if (grep(/^\Q$name\E$/,@{$excluded}));
+             }
+             if (ref($regexps) eq 'ARRAY') {
+                 if (@{$regexps} > 0) {
+                     foreach my $regexp (@{$regexps}) {
+                         if ($name =~ /$regexp/) {
+                             $match = 1;
+                             last;
+                         }
+                     }
+                 }
+             }
+             next if ($match);
+             if (ref($env{$key}) eq 'ARRAY') {
+                 foreach my $value (@{$env{$key}}) {
+                     $value = &HTML::Entities::encode($value,'<>&"');
+                     $output .= '<input type="hidden" name="'.$name.
+                                '" value="'.$value.'" />'."\n";
+                 }
+             } else {
+                 my $value = &HTML::Entities::encode($env{$key},'<>&"');
+                 $output .= '<input type="hidden" name="'.$name.
+                            '" value="'.$value.'" />'."\n";
+             }
+         }
+     }
+     return $output;
+ }
+ ##############################################
+ ##############################################
+ # set_form_elements
+ #
+ # Generates javascript to set form elements to values based on
+ # corresponding values for the same form elements when the page was
+ # previously submitted.
+ #
+ # Last submission values are read from hidden form elements in referring
+ # page which have the same name, i.e., generated by &echo_form_input().
+ #
+ # Intended to be called by onload event.
+ #
+ # Inputs:
+ # (a) Reference to hash of echoed form elements to be set.
+ #
+ # In the hash, keys are the form element names, and the values are the
+ # element type (selectbox, radio, checkbox or text -for textbox, textarea or
+ # hidden).
+ #
+ # (b) Optional reference to hash of stored elements to be set.
+ #
+ # If the page being displayed is a page which permits modification of
+ # previously stored data, e.g., the first page in a multi-page submission,
+ # then if stored is supplied, form elements will be set to the last stored
+ # values.  If user supplied values are also available for the same elements
+ # these will replace the stored values.
+ #
+ # Output:
+ #
+ # javascript function - set_form_elements() which sets form elements,
+ # expects an argument: formname - the name of the form according to
+ # the DOM, e.g., document.compose
+ sub set_form_elements {
+     my ($elements,$stored) = @_;
+     my %values;
+     my $output .= 'function setFormElements(courseForm) {
+ ';
+     if (defined($stored)) {
+         foreach my $name (keys(%{$stored})) {
+             if (exists($$elements{$name})) {
+                 if (ref($$stored{$name}) eq 'ARRAY') {
+                     $values{$name} = $$stored{$name};
+                 } else {
+                     @{$values{$name}} = ($$stored{$name});
+                 }
+             }
+         }
+     }
+     foreach my $key (keys(%env)) {
+         if ($key =~ /^form\.(.+)$/) {
+             my $name = $1;
+             if (exists($$elements{$name})) {
+                 @{$values{$name}} = &Apache::loncommon::get_env_multiple($key);
+             }
+         }
+     }
+     foreach my $name (keys(%values)) {
+         for (my $i=0; $i<@{$values{$name}}; $i++) {
+             $values{$name}[$i] = &HTML::Entities::decode($values{$name}[$i],'<>&"');
+             $values{$name}[$i] =~ s/([\r\n\f]+)/\\n/g;
+             $values{$name}[$i] =~ s/"/\\"/g;
+         }
+         if (($$elements{$name} eq 'text') || ($$elements{$name} eq 'hidden')) {
+             my $numvalues = @{$values{$name}};
+             if ($numvalues > 1) {
+                 my $valuestring = join('","',@{$values{$name}});
+                 $output .= qq|
+   var textvalues = new Array ("$valuestring");
+   var total = courseForm.elements['$name'].length;
+   if (total > $numvalues) {
+       total = $numvalues;
+   }
+   for (var i=0; i<total; i++) {
+       courseForm.elements['$name']\[i].value = textvalues[i];
+   }
+ |;
+             } else {
+                 $output .= qq|
+   courseForm.elements['$name'].value = "$values{$name}[0]";
+ |;
+             }
+         } else {
+             $output .=  qq|
+   var elementLength = courseForm.elements['$name'].length;
+   if (elementLength==undefined) {
+ |;
+             foreach my $value (@{$values{$name}}) {
+                 if ($$elements{$name} eq 'selectbox') {
+                     $output .=  qq|
+       if (courseForm.elements['$name'].options[0].value == "$value") {
+           courseForm.elements['$name'].options[0].selected = true;
+       }|;
+                 } elsif (($$elements{$name} eq 'radio') ||
+                          ($$elements{$name} eq 'checkbox')) {
+                     $output .= qq|
+       if (courseForm.elements['$name'].value == "$value") {
+           courseForm.elements['$name'].checked = true;
+       } else {
+           courseForm.elements['$name'].checked = false;
+       }|;
+                 }
+             }
+             $output .= qq|
+   }
+   else {
+       for (var i=0; i<courseForm.elements['$name'].length; i++) {
+ |;
+             if ($$elements{$name} eq 'selectbox') {
+                 $output .=  qq|
+           courseForm.elements['$name'].options[i].selected = false;|;
+             } elsif (($$elements{$name} eq 'radio') ||
+                      ($$elements{$name} eq 'checkbox')) {
+                 $output .= qq|
+           courseForm.elements['$name']\[i].checked = false;|;
+             }
+             $output .= qq|
+       }
+       for (var j=0; j<courseForm.elements['$name'].length; j++) {
+ |;
+             foreach my $value (@{$values{$name}}) {
+                 if ($$elements{$name} eq 'selectbox') {
+                     $output .=  qq|
+           if (courseForm.elements['$name'].options[j].value == "$value") {
+               courseForm.elements['$name'].options[j].selected = true;
+           }|;
+                 } elsif (($$elements{$name} eq 'radio') ||
+                          ($$elements{$name} eq 'checkbox')) {
+                       $output .= qq|
+           if (courseForm.elements['$name']\[j].value == "$value") {
+               courseForm.elements['$name']\[j].checked = true;
+           }|;
+                 }
+             }
+             $output .= qq|
+       }
+   }
+ |;
+         }
+     }
+     $output .= "
+     return;
+ }\n";
+     return $output;
+ }
+ ##############################################
+ ##############################################
+ sub file_submissionchk_js {
+     my ($turninpaths,$multiples) = @_;
+     my $overwritewarn = &mt('File(s) you uploaded for your submission will overwrite existing file(s) submitted for this item').'\\n'.
+                       &mt('Continue submission and overwrite the file(s)?');
+     my $delfilewarn = &mt('You have indicated you wish to remove some files previously included in your submission.').'\\n'.
+                       &mt('Continue submission with these files removed?');
+     my ($turninpathtext,$multtext,$arrayindexofjs);
+     if (ref($turninpaths) eq 'HASH') {
+         foreach my $key (sort(keys(%{$turninpaths}))) {
+             $turninpathtext .= "    if (prefix == '$key') {\n".
+                                "        return '$turninpaths->{$key}';\n".
+                                "    }\n";
+         }
+     }
+     $turninpathtext .= "    return '';\n";
+     if (ref($multiples) eq 'HASH') {
+         foreach my $key (sort(keys(%{$multiples}))) {
+             $multtext .= "    if (prefix == '$key') {\n".
+                          "        return '$multiples->{$key}';\n".
+                          "    }\n";
+         }
+     }
+     $multtext .= "    return '';\n";
+     $arrayindexofjs = &Apache::loncommon::javascript_array_indexof();
+     return <<"ENDSCRIPT";
+ <script type="text/javascript">
+ // <![CDATA[
+ function file_submission_check(formname,path,multiresp) {
+     var elemnum = formname.elements.length;
+     if (elemnum == 0) {
+         return true;
+     }
+     var alloverwrites = [];
+     var alldelconfirm = [];
+     var result = [];
+     var submitter;
+     var subprefix;
+     var allsub = getIndexByName(formname,'all_submit');
+     if (allsub == -1) {
+         var idx = getIndexByName(formname,'submitted');
+         if (idx != -1) {
+             var subval = String(formname.elements[idx].value);
+             submitter = subval.replace(/^part_/,'');
+             result = overwritten_check(formname,path,multiresp,submitter);
+             alloverwrites.push.apply(alloverwrites,result['overwrite']);
+             alldelconfirm.push.apply(alldelconfirm,result['delete']);
+         }
+     } else {
+         if (formname.elements[allsub].type == 'submit') {
+             var partsub = /^\\d+\\.\\d+_submit_.+\$/;
+             var allprefixes = [];
+             var allparts = [];
+             for (var i=0; i<formname.elements.length; i++) {
+                 if (formname.elements[i].type == 'submit') {
+                     var elemname = formname.elements[i].name;
+                     var subname = String(elemname);
+                     var savesub = String(elemname);
+                     if (partsub.test(subname)) {
+                         var prefix = subname.replace(/_submit_.+\$/,'');
+                         if (allprefixes.indexOf(prefix) == -1) {
+                             allprefixes.push(prefix);
+                             allparts[prefix] = [];
+                         }
+                         var part = savesub.replace(/^\\d+\\.\\d+_submit_/,'');
+                         allparts[prefix].push(part);
+                     }
+                 }
+             }
+             for (var k=0; k<allprefixes.length; k++) {
+                 var idx = getIndexByName(formname,allprefixes[k]+'_submitted');
+                 if (idx > -1) {
+                     if (formname.elements[idx].value != 'yes') {
+                         submitterval = formname.elements[idx].value;
+                         submitter = submitterval.replace(/^part_/,'');
+                         subprefix = allprefixes[k];
+                         result = overwritten_check(formname,path,multiresp,submitter,subprefix);
+                         alloverwrites.push.apply(alloverwrites,result['overwrite']);
+                         alldelconfirm.push.apply(alldelconfirm,result['delete']);
+                         break;
+                     }
+                 }
+             }
+             if (submitter == '' || submitter == undefined) {
+                 for (var m=0; m<allprefixes.length; m++) {
+                     for (var n=0; n<allparts[allprefixes[m]].length; n++) {
+                         var result = overwritten_check(formname,path,multiresp,allparts[allprefixes[m]][n],allprefixes[m]);
+                         alloverwrites.push.apply(alloverwrites,result['overwrite']);
+                         alldelconfirm.push.apply(alldelconfirm,result['delete']);
+                     }
+                 }
+             }
+         }
+     }
+     if (alloverwrites.length > 0) {
+         if (!confirm("$overwritewarn")) {
+             for (var n=0; n<alloverwrites.length; n++) {
+                 formname.elements[alloverwrites[n]].value = "";
+             }
+             return false;
+         }
+     }
+     if (alldelconfirm.length > 0) {
+         if (!confirm("$delfilewarn")) {
+             for (var p=0; p<alldelconfirm.length; p++) {
+                 formname.elements[alldelconfirm[p]].checked = false;
+             }
+             return false;
+         }
+     }
+     return true;
+ }
+ function getIndexByName(formname,item) {
+     for (var i=0;i<formname.elements.length;i++) {
+         if (formname.elements[i].name == item) {
+             return i;
+         }
+     }
+     return -1;
+ }
+ function overwritten_check(formname,path,multiresp,part,prefix) {
+     var result = [];
+     result['overwrite'] = [];
+     result['delete'] = [];
+     var elemnum = formname.elements.length;
+     if (elemnum == 0) {
+         return result;
+     }
+     var uploadstr;
+     var deletestr;
+     if ((prefix != undefined) && (prefix != '')) {
+         var prepend = prefix+'_';
+         uploadstr = new RegExp("^"+prepend+"HWFILE"+part+".+\$");
+         deletestr = new RegExp("^"+prepend+"HWFILE"+part+".+_\\\\d+_delete\$");
+         multiresp = check_for_multiples(prepend);
+         path = check_for_turninpath(prepend);
+     } else {
+         uploadstr = new RegExp("^HWFILE"+part+".+\$");
+         deletestr = new RegExp("^HWFILE"+part+".+_\\\\d+_delete\$");
+     }
+     var alluploads = [];
+     var allchecked = [];
+     var allskipdel = [];
+     var fnametrim = /[^\\/\\\\]+\$/;
+     for (var i=0; i<formname.elements.length; i++) {
+         var id = formname.elements[i].id;
+         if (id != '') {
+             if (uploadstr.test(id)) {
+                 if (formname.elements[i].type == 'file') {
+                     alluploads.push(id);
+                 } else {
+                     if (deletestr.test(id)) {
+                         if (formname.elements[i].type == 'checkbox') {
+                             if (formname.elements[i].checked) {
+                                 allchecked.push(id);
+                             }
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     for (var j=0; j<alluploads.length; j++) {
+         var delstr = new RegExp("^"+alluploads[j]+"_\\\\d+_delete\$");
+         var delboxes = [];
+         for (var k=0; k<formname.elements.length; k++) {
+             var id = formname.elements[k].id;
+             if ((id != '') && (id != undefined)) {
+                 if (delstr.test(id)) {
+                     if (formname.elements[k].type == 'checkbox') {
+                         delboxes.push(id);
+                     }
+                 }
+             }
+         }
+         if (delboxes.length > 0) {
+             if ((formname.elements[alluploads[j]].value != undefined) &&
+                 (formname.elements[alluploads[j]].value != '')) {
+                 var filepath = formname.elements[alluploads[j]].value;
+                 var newfilename = fnametrim.exec(filepath);
+                 if (newfilename != null) {
+                     var filename = String(newfilename);
+                     var nospaces = filename.replace(/\\s+/g,'_');
+                     var nospecials = nospaces.replace(/[^\\/\\w\\.\\-]/g,'');
+                     var cleanfilename = nospecials.replace(/\\.(\\d+\\.)/g,"_\$1");
+                     if (cleanfilename != '') {
+                         var fullpath = path+"/"+cleanfilename;
+                         if (multiresp == 1) {
+                             var partid = String(alluploads[i]);
+                             var subdir = partid.replace(/^\\d*.?\\d*_?HWFILE/,'');
+                             if (subdir != "" && subdir != undefined) {
+                                 fullpath = path+"/"+subdir+"/"+cleanfilename;
+                             }
+                         }
+                         for (var m=0; m<delboxes.length; m++) {
+                             if (fullpath == formname.elements[delboxes[m]].value) {
+                                 if (formname.elements[delboxes[m]].checked) {
+                                     allskipdel.push(delboxes[m]);
+                                 } else {
+                                     result['overwrite'].push(alluploads[j]);
+                                 }
+                                 break;
+                             }
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     if (allchecked.length > 0) {
+         if (allskipdel.length > 0) {
+             for (var n=0; n<allchecked.length; n++) {
+                 if (allskipdel.indexOf(allchecked[n]) == -1) {
+                     result['delete'].push(allchecked[n]);
+                 }
+             }
+         } else {
+             result['delete'].push.apply(result['delete'],allchecked);
+         }
+     }
+     return result;
+ }
+ function check_for_multiples(prefix) {
+ $multtext
+ }
+ function check_for_turninpath(prefix) {
+ $turninpathtext
+ }
+ // ]]>
+ </script>
+ $arrayindexofjs
+ ENDSCRIPT
+ }
+ ##############################################
+ ##############################################
+ # javascript_valid_email
+ #
+ # Generates javascript to validate an e-mail address.
+ # Returns a javascript function which accetps a form field as argumnent, and
+ # returns false if field.value does not satisfy two regular expression matches
+ # for a valid e-mail address.  Backwards compatible with old browsers without
+ # support for javascript RegExp (just checks for @ in field.value in this case).
+ sub javascript_valid_email {
+     my $scripttag .= <<'END';
+ function validmail(field) {
+     var str = field.value;
+     if (window.RegExp) {
+         var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
+         var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$"; //"
+         var reg1 = new RegExp(reg1str);
+         var reg2 = new RegExp(reg2str);
+         if (!reg1.test(str) && reg2.test(str)) {
+             return true;
+         }
+         return false;
+     }
+     else
+     {
+         if(str.indexOf("@") >= 0) {
+             return true;
+         }
+         return false;
+     }
+ }
+ END
+     return $scripttag;
+ }
+ # USAGE: htmltag(element, content, {attribute => value,...});
+ #
+ # EXAMPLES:
+ #  - htmltag('a', 'this is an anchor', {href  => 'www.example.com',
+ #                                       title => 'this is a title'})
+ #
+ #  - You might want to set up needed tags like:
+ #
+ #     my $h3  = sub { return htmltag( "h3",  @_ ) };
+ #
+ #    ... and use them: $h3->("This is a headline")
+ #
+ #  - To set up a couple of tags, see sub inittags
+ #
+ # NOTES:
+ # - Empty elements, such as <br/> are correctly terminated,
+ #   i.e. htmltag('br') returns <br/>
+ # - Empty attributes (title="") are filtered out.
+ # - The function will not check for deprecated attributes.
+ #
+ # OUTPUT: content enclosed in xhtml conform tags
+ sub htmltag{
+     return
+         qq|<$_[0]|
+         . join( '', map { qq| $_="${$_[2]}{$_}"| if ${$_[2]}{$_} } keys %{ $_[2] } )
+         . ($_[1] ? qq|>$_[1]</$_[0]>| : qq|/>|). "\n";
+ };
+ # USAGE: inittags(@tags);
+ #
+ # EXAMPLES:
+ #  - my ($h1, $h2, $h3) = inittags( qw( h1 h2 h3 ) )
+ #    $h1->("This is a headline") #Returns: <h1>This is a headline</h1>
+ #
+ # NOTES: See sub htmltag for further information.
+ #
+ # OUTPUT: List of subroutines.
+ sub inittags {
+     my @tags = @_;
+     return map { my $tag = $_;
+                  sub { return htmltag( $tag, @_ ) }
+                } @tags;
+ }
+ # USAGE: scripttag(scriptcode, [start|end|both]);
+ #
+ # EXAMPLES:
+ #  - scripttag("alert('Hello World!')", 'both')
+ #    returns:
+ #    <script type="text/javascript">
+ #    // BEGIN LON-CAPA Internal
+ #    alert(Hello World!')
+ #    // END LON-CAPA Internal
+ #    </script>
+ #
+ # NOTES:
+ # - works currently only for javascripts
+ #
+ # OUTPUT:
+ # Scriptcode properly enclosed in <script> and CDATA tags (and LC
+ # Internal markers if 2nd argument is given)
+ sub scripttag {
+     my ( $content, $marker ) = @_;
+     return unless defined $content;
+     my $begin = "\n// BEGIN LON-CAPA Internal\n";
+     my $end   = "\n// END LON-CAPA Internal\n";
+     if ($marker) {
+         $content  = $begin . $content if $marker eq 'start' or $marker eq 'both';
+         $content .= $end              if $marker eq 'end'   or $marker eq 'both';
+     }
+     $content = "\n// <![CDATA[\n$content\n// ]]>\n";
+     return htmltag('script', $content, {type => 'text/javascript'});
+ };
+ =pod
+ =item &list_from_array( \@array, { listattr =>{}, itemattr =>{} } )
+ Constructs a XHTML list from \@array.
+ input:
+ =over
+ =item \@array
+ A reference to the array containing text that will be wrapped in <li></li> tags.
+ =item { listattr => {}, itemattr =>{} }
+ Attributes for <ul> and <li> passed in as hash references.
+ See htmltag() for more details.
+ =back
+ returns: XHTML list as String.
+ =cut
+ # \@items, {listattr => { class => 'abc', id => 'xyx' }, itemattr => {class => 'abc', id => 'xyx'}}
+ sub list_from_array {
+     my ($items, $args) = @_;
+     return unless (ref($items) eq 'ARRAY');
+     return unless scalar @$items;
+     my ($ul, $li) = inittags( qw(ul li) );
+     my $listitems = join '', map { $li->($_, $args->{itemattr}) } @$items;
+     return $ul->( $listitems, $args->{listattr} );
+ }
+ ##############################################
+ ##############################################
+ # generate_menu
+ #
+ # Generates html markup for a menu.
+ #
+ # Inputs:
+ # An array of following structure:
+ #   ({	categorytitle => 'Categorytitle',
+ #	items => [
+ #		    {
+ #           linktext    =>	'Text to be displayed',
+ #			url	        =>	'URL the link is pointing to, i.e. /adm/site?action=dosomething',
+ #			permission  =>	'Contains permissions as returned from lonnet::allowed(),
+ #					         must evaluate to true in order to activate the link',
+ #			icon        =>  'icon filename',
+ #			alttext	    =>	'alt text for the icon',
+ #			help	    =>	'Name of the corresponding helpfile',
+ #			linktitle   =>	'Description of the link (used for title tag)'
+ #		    },
+ #		    ...
+ #		]
+ #   },
+ #   ...
+ #   )
+ #
+ # Outputs: A scalar containing the html markup for the menu.
+ sub generate_menu {
+     my @menu = @_;
+     # subs for specific html elements
+     my ($h3, $div, $ul, $li, $a, $img) = inittags( qw(h3 div ul li a img) );
+     my @categories; # each element represents the entire markup for a category
+     foreach my $category (@menu) {
+         my @links;  # contains the links for the current $category
+         foreach my $link (@{$$category{items}}) {
+             next unless $$link{permission};
+             # create the markup for the current $link and push it into @links.
+             # each entry consists of an image and a text optionally followed
+             # by a help link.
+             my $src;
+             if ($$link{icon} ne '') {
+                 $src = '/res/adm/pages/'.$$link{icon};
+             }
+             push(@links,$li->(
+                         $a->(
+                             $img->("", {
+                                 class => "LC_noBorder LC_middle",
+                                 src   => $src,
+                                 alt   => mt(defined($$link{alttext}) ?
+                                 $$link{alttext} : $$link{linktext})
+                             }), {
+                             href  => $$link{url},
+                             title => mt($$link{linktitle}),
+                             class => 'LC_menubuttons_link'
+                             }).
+                         $a->(mt($$link{linktext}), {
+                             href  => $$link{url},
+                             title => mt($$link{linktitle}),
+                             class => "LC_menubuttons_link"
+                             }).
+                          (defined($$link{help}) ?
+                          Apache::loncommon::help_open_topic($$link{help}) : ''),
+                          {class => "LC_menubuttons_inline_text"}));
+         }
+         # wrap categorytitle in <h3>, concatenate with
+         # joined and in <ul> tags wrapped @links
+         # and wrap everything in an enclosing <div> and push it into
+         # @categories
+         # such that each element looks like:
+         # <div><h3>title</h3><ul><li>...</li>...</ul></div>
+         # the category won't be added if there aren't any links
+         push(@categories,
+             $div->($h3->(mt($$category{categorytitle}), {class=>"LC_hcell"}).
+             $ul->(join('' ,@links),  {class =>"LC_ListStyleNormal" }),
+             {class=>"LC_Box LC_400Box"})) if scalar(@links);
+     }
+     # wrap the joined @categories in another <div> (column layout)
+     return $div->(join('', @categories), {class => "LC_columnSection"});
+ }
+ ##############################################
+ ##############################################
+ =pod
+ =item &start_funclist()
+ Start list of available functions
+ Typically used to offer a simple list of available functions
+ at top or bottom of page.
+ All available functions/actions for the current page
+ should be included in this list.
+ If the optional headline text is not provided, a default text will be used.
+ Related routines:
+ =over 4
+ add_item_funclist
+ end_funclist
+ =back
+ Inputs: (optional) headline text
+ Returns: HTML code with function list start
+ =cut
+ ##############################################
+ ##############################################
+ sub start_funclist {
+     my($legendtext)=@_;
+     $legendtext=&mt('Functions') if !$legendtext;
+     return '<ul class="LC_funclist"><li style="font-weight:bold; margin-left:0.8em;">'.$legendtext.'</li>'."\n";
+ }
+ ##############################################
+ ##############################################
+ =pod
+ =item &add_item_funclist()
+ Adds an item to the list of available functions
+ Related routines:
+ =over 4
+ start_funclist
+ end_funclist
+ =back
+ Inputs: content item with text and link to function
+ Returns: HTML code with list item for funclist
+ =cut
+ ##############################################
+ ##############################################
+ sub add_item_funclist {
+     my($content) = @_;
+     return '<li>'.$content.'</li>'."\n";
+ }
+ =pod
+ =item &end_funclist()
+ End list of available functions
+ Related routines:
+ =over 4
+ start_funclist
+ add_item_funclist
+ =back
+ Inputs: ./.
+ Returns: HTML code with function list end
+ =cut
+ sub end_funclist {
+     return "</ul>\n";
+ }
+ =pod
+ =item &funclist_from_array( \@array, {legend => 'text for legend'} )
+ Constructs a XHTML list from \@array with the first item being visually
+ highlighted and set to the value of legend or 'Functions' if legend is
+ empty.
+ =over
+ =item \@array
+ A reference to the array containing text that will be wrapped in <li></li> tags.
+ =item { legend => 'text' }
+ A string that's used as visually highlighted first item. 'Functions' is used if
+ it's value evaluates to false.
+ =back
+ returns: XHTML list as string.
+ =back
+ =cut
+ sub funclist_from_array {
+     my ($items, $args) = @_;
+     return unless(ref($items) eq 'ARRAY');
+     $args->{legend} ||= mt('Functions');
+     return list_from_array( [$args->{legend}, @$items],
+                { listattr => {class => 'LC_funclist'} });
+ }
 ;

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