# The LearningOnline Network with CAPA
# Handler to set configuration settings for a course
#
# $Id: courseprefs.pm,v 1.2 2009/04/26 00:43:14 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
#
###############################################################
##############################################################

package Apache::courseprefs;

use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet;
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::lonconfigsettings;
use Apache::lonlocal;
use LONCAPA qw(:DEFAULT :match);

sub handler {
    my $r=shift;
    if ($r->header_only) {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
        return OK;
    }
    my $context = 'course';
    my $cid = $env{'request.course.id'};
    my ($cnum,$cdom) = &get_course($cid);
    my $crstype = &Apache::loncommon::course_type();
    my $parm_permission = &Apache::lonnet::allowed('opa',$cid);
    my $navmap = Apache::lonnavmaps::navmap->new();
    if ($parm_permission && $navmap) {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
    } else {
        if ($navmap) {
            $env{'user.error.msg'}=
                "/adm/courseprefs:opa:0:0:Cannot modify course settings";
        } else {
           $env{'user.error.msg'}=
                "/adm/courseprefs::0:1:Course environment gone, reinitialize the course";
        }
        return HTTP_NOT_ACCEPTABLE;
    }

    &Apache::lonhtmlcommon::clear_breadcrumbs();
    &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/courseprefs',
        text=>"Course Configuration"});
    my $breadcrumbs =
        &Apache::lonhtmlcommon::breadcrumbs('Edit Course Configuration');

    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                            ['phase','actions']);

    my $phase = 'pickactions';
    if ( exists($env{'form.phase'}) ) {
        $phase = $env{'form.phase'};
    }

    if ($phase eq 'categorizecourse') {
        &assign_course_categories($r);
        return OK;
    }

    my %values=&Apache::lonnet::dump('environment',$cdom,$cnum);
    my @prefs_order = ('courseinfo','localization','feedback','discussion',
                       'classlists','appearance','grading','printouts',
                       'spreadsheet','bridgetasks','other');

    my %prefs = (
        'courseinfo' =>
                   { text => 'General course settings',
                     help => 'Course_Environment',
                     header => [{col1 => 'Setting',
                                 col2 => 'Value'}],
                     ordered => ['description','courseid','categories',
                                 'hidefromcat','cloners','externalsyllabus',
                                 'url','rolenames'],
                    },
        'localization' =>
                    { text => 'Language/TimeZone/Locale',
                      help => 'Course_Environment',
                      header => [{col1 => 'Setting',
                                  col2 => 'Value',}],
                      ordered => ['languages','timezone','datelocale'],
                    },
        'feedback' =>
                    { text => 'Feedback messages',
                      help => 'Course_Environment',
                      header => [{col1 => 'Questions about:',
                                  col2 => 'Recipients'},
                                 {col1 => 'Questions about:',
                                  col2 => 'Custom Text'}],
                      ordered => ['question','comment','policy'],
                    },
        'discussion' =>
                    { text => 'Discussion and Chat',
                      help => 'Course_Environment',
                      header => [{col1 => 'Setting',
                                  col2 => 'Value',}],
                      ordered => ['plc.roles.denied','plc.users.denied',
                                  'pch.roles.denied','pch.users.denied',
                                  'allow_limited_html_in_feedback',
                                  'allow_discussion_post_editing'],
                    },
        'classlists' =>
                   { text => 'Classlists and Staff Listing',
                     help => 'Course_Environment',
                     header => [{col1 => 'Type',
                                 col2 => 'Default dates for student access'},
                                {col1 => 'Setting',
                                 col2 => 'Privileged users (Domain Coordinators) in staff listing'},
                                {col1 => 'Setting',
                                 col2 => 'Student-viewable classlist options'}],
                     ordered => ['default_enrollment_start_date',
                                 'default_enrollment_end_date',
                                 'nothideprivileged','student_classlist_view',
                                 'student_opt_in','student_classlist_portfiles'],
                   },
        'appearance' =>
                   { text => 'Display of resources ',
                     help => 'Course_Environment',
                     header => [{col1 => 'Setting',
                                 col2 => 'Value'}],
                     ordered => ['default_xml_style','pageseparators',
                                 'disable_receipt_display','texengine',
                                 'tthoptions'],
                  },
        'grading' =>
                  { text => 'Grading',
                    help => 'Course_Environment',
                    header => [{col1 => 'Setting',
                                col2 => 'Value',}],
                    ordered => ['grading','rndseed',
                                'receiptalg','disablesigfigs'],
                  },
        'printouts' =>
                  { text => 'Printout generation',
                    help => 'Course_Environment',
                    header => [{col1 => 'Setting',
                                col2 => 'Value',}],
                    ordered => ['problem_stream_switch','suppress_tries',
                                'default_paper_size','print_header_format',
                                'disableexampointprint'],
                  },
        'spreadsheet' =>
                  { text => 'Spreadsheets',
                    help => 'Course_Environment',
                    header => [{col1 => 'Setting',
                                col2 => 'Value'}],
                    ordered => ['spreadsheet_default_classcalc',
                                'spreadsheet_default_studentcalc',
                                'spreadsheet_default_assesscalc','hideemptyrows'],
                  },
        'bridgetasks' =>
                  { text => 'Bridge tasks',
                    help => 'Course_Environment',
                    header => [{col1 => 'Setting',
                                col2 => 'Value'}],
                    ordered => ['task_messages','task_grading',
                                'suppress_embed_prompt'],
                  },
        'other' =>
                  { text => 'Other settings',
                    help => 'Course_Environment',
                    header => [ {col1 => 'Item',
                                 col2 => 'Value',
                              }],
                  },
    );
    if ($phase eq 'process') {
        &Apache::lonconfigsettings::make_changes($r,$cdom,$phase,$context,
                                                 \@prefs_order,\%prefs,\%values);
    } elsif ($phase eq 'display') {
        my $jscript = &get_jscript($cdom);
        my @allitems;
        foreach my $item (keys(%prefs)) {
            if (ref($prefs{$item}) eq 'HASH') {
                if (ref($prefs{$item}{'ordered'}) eq 'ARRAY') {
                    push(@allitems,@{$prefs{$item}{'ordered'}});
                    if ($item eq 'feedback') {
                        push(@allitems,(map { $_.'.email'; } @{$prefs{$item}{'ordered'}}));
                    }
                }
            }
        }
        &Apache::lonconfigsettings::display_settings($r,$cdom,$phase,$context,
            \@prefs_order,\%prefs,\%values,undef,$jscript,\@allitems);
    } else {
        &Apache::lonconfigsettings::display_choices($r,$phase,$context,
                                                    \@prefs_order,\%prefs);
    }
    return OK;
}

sub print_config_box {
    my ($r,$cdom,$phase,$action,$item,$settings,$allitems) = @_;
    my $ordered = $item->{'ordered'};
    my $rowtotal = 0;
    my $output =
         '<table class="LC_nested_outer">
          <tr>
           <th align="left" valign="middle"><span class="LC_font_larger">'.
           &mt($item->{text}).'&nbsp;'.
           &Apache::loncommon::help_open_topic($item->{'help'}).'</span></th>'."\n".
          '</tr>';
    if (($action eq 'feedback') || ($action eq 'classlists')) {
        $output .= '
          <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item">'.&mt($item->{'header'}->[0]->{'col1'}).'</td>
              <td class="LC_right_item">'.&mt($item->{'header'}->[0]->{'col2'}).'</td>
             </tr>';
        $rowtotal ++;
        if ($action eq 'feedback') {
            $output .= &print_feedback('top',$cdom,$settings,$ordered,\$rowtotal);
        } elsif ($action eq 'classlists') {
            $output .= &print_classlists('top',$cdom,$settings,\$rowtotal);
        }
        $output .= '
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item">'.&mt($item->{'header'}->[1]->{'col1'}).'</td>';
        $output .= '
              <td class="LC_right_item">'.&mt($item->{'header'}->[1]->{'col2'}).'</td>
             </tr>';
        if ($action eq 'classlists') {
            $output .= &print_classlists('middle',$cdom,$settings,\$rowtotal).
                       '
            </table>
           </td>
          </tr>
          <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item" valign="top">'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
              <td class="LC_right_item" valign="top">'.&mt($item->{'header'}->[2]->{'col2'}).'</td>
             </tr>';
        }
    } else {
        $output .= '
          <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item" valign="top">'.&mt($item->{'header'}->[0]->{'col1'}).'</td>
              <td class="LC_right_item" valign="top">'.&mt($item->{'header'}->[0]->{'col2'}).'</td>
             </tr>';
    }
    $rowtotal ++;
    if ($action eq 'courseinfo') {
        $output .= &print_courseinfo($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'localization') {
        $output .= &print_localization($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'feedback') {
        $output .= &print_feedback('bottom',$cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'discussion') {
        $output .= &print_discussion($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'classlists') {
        $output .= &print_classlists('bottom',$cdom,$settings,\$rowtotal);
    } elsif ($action eq 'appearance') {
        $output .= &print_appearance($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'grading') {
        $output .= &print_grading($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'printouts') {
        $output .= &print_printouts($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'spreadsheet') {
        $output .= &print_spreadsheet($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'bridgetasks') {
        $output .= &print_bridgetasks($cdom,$settings,$ordered,\$rowtotal);
    } elsif ($action eq 'other') {
        $output .= &print_other($cdom,$settings,$allitems,\$rowtotal);
    }
    $output .= '
   </table>
  </td>
 </tr>
</table><br />';
    return ($output,$rowtotal);
}

sub process_changes {
    my ($r,$cdom,$action,$values) = @_;
    my %domconfig;
    if (ref($values) eq 'HASH') {
        %domconfig = %{$values};
    }
    return &modify_crsenv($action,$cdom,%domconfig); 
}

sub get_course {
    my ($courseid) = @_;
    if (!defined($courseid)) {
        $courseid = $env{'request.course.id'};
    }
    my $cdom=$env{'course.'.$courseid.'.domain'};
    my $cnum=$env{'course.'.$courseid.'.num'};
    return ($cnum,$cdom);
}

sub get_jscript {
    my ($cdom) = @_;
    my ($can_toggle_cat,$can_categorize) = &can_modify_catsettings($cdom);
    my ($jscript,$categorize_js);
    my $stubrowse_js = &Apache::loncommon::studentbrowser_javascript();
    my $browse_js = &Apache::loncommon::browser_and_searcher_javascript('parmset');
    if ($can_categorize) {
        $categorize_js = <<ENDSCRIPT;
function catsbrowser() {
    var catswin = null;
    var url = '/adm/courseprefs?phase=categorizecourse';
    if (!catswin || catswin.closed) {
        catswin=window.open(url,'categorieswin','height=480,width=600,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
    } else {
        catswin.focus();
    }
}
ENDSCRIPT
    }
    $jscript = '<script type="text/javascript" language="Javascript">'."\n".
               $browse_js."\n".$categorize_js."\n".'</script>'."\n".$stubrowse_js."\n";
    return $jscript;
}

sub print_courseinfo {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my ($cathash,$categoriesform);
    my $crstype = &Apache::loncommon::course_type();
    my %domconf = 
        &Apache::lonnet::get_dom('configuration',['coursecategories'],$cdom);
    if (ref($domconf{'coursecategories'}) eq 'HASH') {
        $cathash = $domconf{'coursecategories'}{'cats'};
        if (ref($cathash) eq 'HASH') {
            $categoriesform = 
                &Apache::loncommon::assign_categories_table($cathash,
                                                $settings->{'categories'})."\n";
        }
    }
    if (!defined($categoriesform)) {
        $categoriesform = &mt('No categories defined for this domain');
    }

    my ($can_toggle_cat,$can_categorize) = &can_modify_catsettings($cdom);

    my %items = (
        'url' => { 
                   text => '<b>'.&mt('Top Level Map').'</b>'.('&nbsp;'x2).
                           '<a href="javascript:openbrowser'.
                           "('display','url','sequence')\">".
                           &mt('Select Map').'</a><br /><span class="LC_warning"> '.
                           &mt('Modification may make assessment data inaccessible!').
                           '</span>',
                   input => 'textbox',
                   size  => '40',
                 },
        'description'  => { 
                   text => '<b>'.&mt('Course Description').'</b>',
                   input => 'textbox',
                   size  => '25',
                          },
        'courseid'     => { 
                   text => '<b>'.&mt('Course ID or number').
                           '</b><br />'.
                           '('.&mt('internal, optional').')',
                   input => 'textbox',
                   size  => '25',
                          },
        'cloners'      => { 
                   text => '<b>'.&mt('Users allowed to clone course').'</b><br />'.
                           &mt('Course Coordinators included automatically'),
                   input => 'textbox',
                   size  => '40',
                         },
        'rolenames'  => { 
                   text  => '<b>'.&mt('Replacement titles for standard course roles').'</b><br />'.
                            '('.&mt('To replace the standard title for a course role, enter a title, otherwise leave blank').')',
                   input => 'textbox',
                   size  => '20',
                        },
        'externalsyllabus' => {
                   text => '<b>'.&mt('URL of Syllabus').'</b><br />('.&mt('not using internal handler)'),
                   input => 'textbox',
                   size  => '40',
                        },
        'hidefromcat' => {
                   text => '<b>'.&mt('Exclude from course catalog').'</b><br />'.
                           ' ('.&mt('included by default if assigned institutional code, or categorized').')',
                   input => 'radio',
                         },
        'categories' => {
                   text => '<b>'.&mt('Categorize course').'</b> <a href="javascript:catsbrowser()">'.
                           &mt('Display Categories').'</a>',
                   input => 'textbox',
                   size  => '25',
                        },
    );
    my $datatable;
    my $count = 0;
    foreach my $item (@{$ordered}) {
        if ($item eq 'hidefromcat') {
            next if (!$can_toggle_cat);
        } elsif ($item eq 'categories') {
            next if (!$can_categorize);
        }
        $count ++;
        $datatable .= &item_table_row_start($items{$item}{text},$count);
        if ($items{$item}{input} eq 'radio') {
            $datatable .= &yesno_radio($item,$settings);
        } elsif ($item eq 'cloners') {
            my $includeempty = 1;
            my $num = 0;
            $datatable .= &Apache::loncommon::start_data_table().
                          &Apache::loncommon::start_data_table_row().
                          '<td><span class="LC_nobreak"><label>'.
                          &mt('Any user in any domain:').
                          '&nbsp;<input type="radio" name="cloners_all" value="1" ';
            if ($settings->{$item} eq '*') {
                $datatable .= ' checked="checked" ';
            }
            $datatable .= 'onchange="javascript:update_cloners('.
                          "'cloners_all'".');" />'.&mt('Yes').'</label>'.
                          ('&nbsp;'x2).'<input type="radio" name="cloners_all" value="0" ';
            if ($settings->{$item} ne '*') {
                $datatable .= ' checked="checked" ';
            }
            $datatable .= ' onchange="javascript:update_cloners('.
                          "'cloners_all'".');"/>'.&mt('No').'</label></td>'.
                          &Apache::loncommon::end_data_table_row().
                          &Apache::loncommon::end_data_table().
                          '<table><tr><td align="left">'.&mt('Or').
                          '</td></tr></table>'.
                          &Apache::loncommon::start_data_table();
            my @cloners;
            if ($settings->{$item} eq '') {
                $datatable .= &new_cloners_dom_row($cdom,'0');
            } elsif ($settings->{$item} ne '*') {
                my @entries = split(/,/,$settings->{$item});
                if (@entries > 0) {
                    foreach my $entry (@entries) {
                        my ($uname,$udom) = split(/:/,$entry);
                        if ($uname eq '*') {
                            $datatable .= 
                                &Apache::loncommon::start_data_table_row().
                                '<td valign="top"><span class="LC_nobreak">'.
                                &mt('Domain:').'<b>&nbsp;'.$udom.
                                '</b><input type="hidden" name="cloners_dom_'.$num.
                                '" value="'.$udom.'" /></span><br />'.
                                '<span class="LC_nobreak"><label><input type="checkbox" '.
                                'name="cloners_delete" value="'.$num.'" onchange="javascript:update_types('."'cloners_delete','$num'".');" />'.
                                &mt('Delete').'</label></span></td>'.
                                &Apache::loncommon::end_data_table_row();
                            $num ++;
                        } else {
                            push(@cloners,$entry);
                        }
                    }
                }
            }
            my $add_domtitle = &mt('Any user in additional domain:');
            if ($settings->{$item} eq '*') {
                $add_domtitle = &mt('Any user in specific domain:');
            } elsif ($settings->{$item} eq '') {
                $add_domtitle = &mt('Any user in other domain:');
            }
            my $cloners_str = join(',',@cloners);
            $datatable .= &Apache::loncommon::start_data_table_row().
                          '<td align="left"><span class="LC_nobreak">'.
                          $add_domtitle.'</span><br />'.
                          &Apache::loncommon::select_dom_form('','cloners_newdom',
                                                              $includeempty).
                          '<input type="hidden" name="cloners_total" value="'.$num.'" />'.
                          '</td>'.&Apache::loncommon::end_data_table_row().
                          &Apache::loncommon::end_data_table().'<br />'.
                          &Apache::loncommon::start_data_table().
                          &Apache::loncommon::start_data_table_row().
                          '<td align="left">'.
                          &mt('Specific users').'&nbsp;(<tt>'.
                          &mt('user:domain,user:domain').'</tt>)<br />'.
                          &Apache::lonhtmlcommon::textbox($item,$cloners_str,
                                                          $items{$item}{'size'}).
                          '</td>'.&Apache::loncommon::end_data_table_row().
                          &Apache::loncommon::end_data_table();
        } elsif ($item eq 'rolenames') {
            $datatable .= &Apache::loncommon::start_data_table();
            foreach my $role ('cc','in','ta','ep','ad','st') {
                $datatable .= &Apache::loncommon::start_data_table_row().
                              '<td align="left"><span class="LC_nobreak">'.
                              &Apache::lonnet::plaintext($role,$crstype,undef,1).
                              '</span></td><td align="left">'.
                              &Apache::lonhtmlcommon::textbox('rolenames_'.$role,
                                                 $settings->{$role.'.plaintext'},
                                                 $items{$item}{size}).'</td>'.
                              &Apache::loncommon::end_data_table_row();
            }
            $datatable .= &Apache::loncommon::end_data_table().'</td>';
        } elsif ($item eq 'categories') {
            $datatable .= '<input type="hidden" name="categories" value="'.$settings->{$item}.'" />'.&Apache::lonhtmlcommon::textbox($item.'_display',$settings->{$item},$items{$item}{size});
        } else {
            $datatable .= &Apache::lonhtmlcommon::textbox($item,$settings->{$item},$items{$item}{size});
        }
        $datatable .= &item_table_row_end();
    }
    $$rowtotal += scalar(@{$ordered});
    return $datatable;
}

sub new_cloners_dom_row {
    my ($newdom,$num) = @_;
    my $output;
    if ($newdom ne '') {
        $output .= &Apache::loncommon::start_data_table_row().
                   '<td valign="top"><span class="LC_nobreak">'.
                   &mt('Any user in domain:').'&nbsp;<b>'.$newdom.'</b>'.
                   ('&nbsp;'x2).'<label><input type="radio" '.
                   'name="cloners_activate" value="'.$num.'" '.
                   'onchange="javascript:update_types('.
                   "'cloners_activate','$num'".');" />'.
                   &mt('Yes').'</label>'.('&nbsp;'x2).
                   '<label><input type="radio" '.
                   'name="cloners_activate" value="" checked="checked" '.
                   'onchange="javascript:update_types('.
                   "'cloners_activate','$num'".');" />'.
                   &mt('No').'</label></span></td>'.
                   &Apache::loncommon::end_data_table_row();
    }
    return $output;
}

sub can_modify_catsettings {
    my ($dom) = @_;
    my %domconf = &Apache::lonnet::get_dom('configuration',['coursecategories'],$dom);
    my ($can_toggle_cat,$can_categorize);
    if (ref($domconf{'coursecategories'}) eq 'HASH') {
        if ($domconf{'coursecategories'}{'togglecats'} eq 'crs') {
            $can_toggle_cat = 1;
        }
        if ($domconf{'coursecategories'}{'categorize'} eq 'crs') {
            $can_categorize = 1;
        }
    }
    return ($can_toggle_cat,$can_categorize);
}

sub assign_course_categories {
    my ($r) = @_;
    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
    my $hascats = 0;
    my $cathash;
    my %domconf = &Apache::lonnet::get_dom('configuration',['coursecategories'],$cdom);
    if (ref($domconf{'coursecategories'}) eq 'HASH') {
        $cathash = $domconf{'coursecategories'}{'cats'};
        if (ref($cathash) eq 'HASH') {
            $hascats = 1;
        }
    }
    my $catwin_js;
    if ($hascats) {
        my $alert = &mt('Use \"Save\" in the main window to save course categories');
        $catwin_js = <<ENDSCRIPT;
<script type="text/javascript">

function updateCategories() {
    var newcategories = '';
    var unescapedcats = '';
    if (document.chgcats.usecategory.length) {
        for (var i=0; i<document.chgcats.usecategory.length; i++) {
            if (document.chgcats.usecategory[i].checked == true) {
                newcategories = newcategories + document.chgcats.usecategory[i].value + '&';
                unescapedcats = unescapedcats + document.chgcats.catname[i].value + ' & ';
            }
        }
        if (newcategories.length > 0) {
            newcategories = newcategories.slice(0,-1);
        }
        if (unescapedcats.length > 0) {
            unescapedcats = unescapedcats.slice(0,-3);
        }
    } else {
         if (document.chgcats.usecategory.checked == true) {
             newcategories = document.chgcats.usecategory.value;
             unescapedcats = document.chgcats.catname.value;
         }
    }
    opener.document.display.categories.value = newcategories;
    opener.document.display.categories_display.value = unescapedcats;
    alert("$alert");
    self.close();
    return;
}

</script>
ENDSCRIPT
    } else {
        my $onload;
    }
    my $start_page =
        &Apache::loncommon::start_page('Course Categories',$catwin_js,
                                       {'only_body'      => 1,});
    my $end_page = &Apache::loncommon::end_page();
    my $categoriesform = '<h3>'.&mt('Categorize Course').'</h3>';
    if ($hascats) {
        my %currsettings =
            &Apache::lonnet::get('environment',['hidefromcat','categories'],$cdom,$cnum);
        $categoriesform .= &mt('Assign one or more categories to this course.').'<br /><br />'.
                               '<form name="chgcats" action="/adm/courseprefs" method="post">'."\n".
                               &Apache::loncommon::assign_categories_table($cathash,
                                                       $currsettings{'categories'})."\n".
                               '<br /><input type="button" name="changes" value="'.
                               &mt('Copy to main window').'" '.
                               'onclick="javascript:updateCategories()" /></form><br />';
    } else {
        $categoriesform .= &mt('No categories defined for this domain');
    }
    $r->print($start_page.$categoriesform.$end_page);
    return;
}

sub print_localization {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my %items = (
        languages => {
                        text => &mt('Languages used').'<br />'.&mt("(will override user's preference)"),
                        input => 'selectbox',
                     }, 
        timezone => {
                        text  => &mt('Timezone in which the course takes place'),
                        input => 'selectbox',
                    },
        datelocale  => { 
                         text => &mt('Locale used for course calendar'),
                         input => 'selectbox',
                       },
    );
    my $datatable;
    my $count = 0;
    foreach my $item (@{$ordered}) {
        $count ++;
        $datatable .= &item_table_row_start($items{$item}{text},$count);
        if ($item eq 'timezone') {
            my $includeempty = 1;
            my $timezone = &Apache::lonlocal::gettimezone();
            $datatable .= 
                &Apache::loncommon::select_timezone($item,$timezone,undef,
                                                    $includeempty);
        } elsif ($item eq 'datelocale') {
            my $includeempty = 1;
            my $locale_obj = &Apache::lonlocal::getdatelocale();
            my $currdatelocale;
            if (ref($locale_obj)) {
                $currdatelocale = $locale_obj->id();
            }
            $datatable .= 
                &Apache::loncommon::select_datelocale($item,$currdatelocale,
                                                      undef,$includeempty);
        } else {
            if ($settings->{$item} eq '') {
                $datatable .= 
                    &Apache::loncommon::select_language('language_0','',1);
            } else {
                my $num = 0;
                my @languages = split(/\s*(\,|\;|\:)\s*/,$settings->{$item});
                $datatable .= &Apache::loncommon::start_data_table();
                if (@languages > 0) {
                    foreach my $lang (@languages) {
                        my $showlang = $lang;
                        my $code = &Apache::loncommon::supportedlanguagecode($lang);
                        if ($code) {
                            $showlang = &plainlanguagedescription($lang);
                        }
                        $datatable .=
                            &Apache::loncommon::start_data_table_row().
                            '<td valign="top"><span class="LC_nobreak">'.
                            &mt('Language:').'<b>&nbsp;'.$showlang.
                            '</b><input type="hidden" name="languages_'.$num.
                            '" value="'.$lang.'" /></span><br />'.
                            '<span class="LC_nobreak"><label><input type="checkbox" '.
                            'name="languages_delete" value="'.$num.'" />'.
                            &mt('Delete').'</label></span></td>'.
                            &Apache::loncommon::end_data_table_row().'</td>';
                            $num ++;
                    }
                }
                $datatable .= &Apache::loncommon::start_data_table_row().
                              '<td><span class="LC_nobreak">'.
                              &mt('Additional language:').'</span><br />'.
                              &Apache::loncommon::select_language($item);
                              '<input type="hidden" name="languages_total" value="'.$num.'" />'.
                              '</td>'.&Apache::loncommon::end_data_table_row().
                              &Apache::loncommon::end_data_table();
            }
        }
        $datatable .= &item_table_row_end();
    }
    $$rowtotal += scalar(@{$ordered});
    return $datatable;
}

sub print_feedback {
    my ($position,$cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my %items = (
        'question' => {
                   text => '<b>'.&mt('Resource Content').'</b>',
                   input => 'textbox',
                   size  => '50',
                 },

        'comment'  => {
                   text => '<b>'.&mt('Course Content').'</b>',
                   input => 'textbox',
                   size  => '50',
                 },

        'policy'   => {
                   text => '<b>'.&mt('Course Policy').'</b>',
                   input => 'textbox',
                   size  => '50',
                 },
    );
    my $datatable;
    my $count = 0;
    my ($cnum) = &get_course();
    my %sections = &Apache::loncommon::get_sections($cdom,$cnum);
    my @sections = sort( { $a <=> $b } keys(%sections));
    my %lt = &Apache::lonlocal::texthash (
                                           currone => 'Current recipient:',
                                           curmult => 'Current recipients:',
                                           add     => 'Additional recipient:',
                                           del     => 'Delete?',
                                           sec     => 'Sections:',
                                         );

    foreach my $item (@{$ordered}) {
        $count ++;
        $datatable .= &item_table_row_start($items{$item}{text},$count);
        if ($position eq 'top') {
            my $includeempty = 0;
            $datatable .= &user_table($cdom,$item,\@sections,
                                      $settings->{$item.'.email'},\%lt);
        } else {
            $datatable .= &Apache::lonhtmlcommon::textbox($item.'_text',
                              $settings->{$item},$items{$item}{size});  
        }
        $datatable .= &item_table_row_end();
    }
    $$rowtotal += scalar(@{$ordered});
    return $datatable;
}

sub user_table {
    my ($cdom,$item,$sections,$currvalue,$lt) = @_;
    my $output;
    if ($currvalue eq '') {
        $output .= &select_recipient($item,'0',$cdom,$sections);
    } else {
        my $num = 0;
        my @curr = split(/,/,$currvalue);
        $output .= &Apache::loncommon::start_data_table();
        my ($currusers);
        foreach my $val (@curr) {
            next if ($val eq '');
            my ($uname,$udom,$seclist) = ($val =~ /^($match_username):($match_domain)(\(?[^\)]*\)?)$/);
            my @selsec;
            if ($seclist) {
                $seclist =~ s/(^\(|\)$)//g;
                @selsec = split(/\s*;\s*/,$seclist);
            }
            $currusers .= '<tr>'.
                        '<td valign="top"><span class="LC_nobreak">'.
                        '<label><input type="checkbox" '.
                        'name="'.$item.'_delete" value="'.$num.'" />'.
                        $lt->{'del'}.'</label>'.
                        '<input type="hidden" name="'.$item.'_user_'.
                        $num.'" value="'.$val.'" />'.('&nbsp;'x2).
                        &Apache::loncommon::aboutmewrapper(
                            &Apache::loncommon::plainname($uname,$udom,'firstname'),
                            $uname,$udom,'aboutuser');
            if (ref($sections) eq 'ARRAY') {
                if (@{$sections}) {
                    $currusers.= ('&nbsp;'x3).$lt->{'sec'}.'&nbsp;'.
                                  &select_sections($item,$num,$sections,
                                  \@selsec);
                }
            }
            $currusers .= '</span></td></tr>';
            $num ++;
        }
        if ($num) {
            $output .= &Apache::loncommon::start_data_table_row().
                       '<td align="left"><i>';
            if ($num > 1) {
                $output .= $lt->{'currone'};
            } else {
                $output .= $lt->{'currmult'};
            }
            $output .= '</i><br />'.
                          '<table>'.$currusers.'</table></td>'.
                          &Apache::loncommon::end_data_table_row();
        }
        $output .= &Apache::loncommon::start_data_table_row().
                  '<td align="left"><span class="LC_nobreak"><i>'.
                  $lt->{'add'}.'</i></span><br />'.
                  &select_recipient($item,$num,$cdom,$sections).
                  '<input type="hidden" name="'.$item.'_total" value="'.$num.'" />'.
                              '</td>'.&Apache::loncommon::end_data_table_row().
                              &Apache::loncommon::end_data_table();
    }
    return $output;
}

sub select_recipient {
    my ($item,$num,$cdom,$sections,$selected,$includeempty) = @_;
    my $domform = &Apache::loncommon::select_dom_form($cdom,$item.'_udom_'.$num,$includeempty);
    my $selectlink =
        &Apache::loncommon::selectstudent_link('display',$item.'_uname_'.$num,
                                               $item.'_udom_'.$num,1);
    my $output = 
        '<table><tr><td align="center">'.&mt('Username').'<br />'.
        '<input type="text" name="'.$item.'_uname_'.$num.'" value="" /></td>'.
        '<td align="center">'.&mt('Domain').'<br />'.$domform.'</td>';
    if (ref($sections) eq 'ARRAY') {
        if (@{$sections}) {
            $output .= '<td align="center">'.&mt('Sections').'<br />'.
                       &select_sections($item,$num,$sections,$selected).'</td>'; 
        }
    }
    $output .= '<td valign="top">'.
               $selectlink.'</td></tr></table>';
    return $output;
}

sub select_sections {
    my ($item,$num,$sections,$selected) = @_;
    my ($output,@currsecs,$allsec);
    if (ref($selected) eq 'ARRAY') {
        @currsecs = @{$selected};
    }
    if (!@currsecs) {
        $allsec = ' selected="selected"';
    }
    if (ref($sections) eq 'ARRAY') {
        if (@{$sections}) {
            my $mult;
            if (@{$sections} > 1) {
                $mult = ' multiple="multiple"';
                if (@{$sections} > 3) {
                    $mult .= ' size="4"';
                }
            }
            $output = '<select name="'.$item.'_sections_'.$num.'"'.$mult.'>'.
                      ' <option value=""'.$allsec.'>'.&mt('All').'</option>';
            foreach my $sec (@{$sections}) {
                my $is_sel;
                if ((@currsecs) && (grep(/^\Q$sec\E$/,@currsecs))) {
                    $is_sel = 'selected="selected"';
                }
                $output .= '<option value="'.$sec.'"'.$is_sel.'>'.$sec.'</option>';
            }
            $output .= '</select>';
        }
    }
    return $output;
}

sub print_discussion {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my %items = (
        'plc.roles.denied' => {
                   text => '<b>'.&mt('No Chat room use').'</b>'.
                           &Apache::loncommon::help_open_topic("Course_Disable_Discussion"),
                   input => 'checkbox',
                 },

        'plc.users.denied'  => {
                   text => '<b>'.&mt('No Chat room use').'</b>',
                   input => 'checkbox',
                 },

        'pch.roles.denied'   => {
                   text => '<b>'.&mt('No Resource Discussion').'</b>'.
                           &Apache::loncommon::help_open_topic("Course_Disable_Discussion"),
                   input => 'checkbox',
                 },

        'pch.users.denied'   => {
                   text => '<b>'.&mt('No Resource Discussion').'</b>',
                   input => 'checkbox',
                 },
        'allow_limited_html_in_feedback' => {
                   text => '<b>'.&mt('Allow limited HTML in discussion posts').'</b>',
                   input => 'radio',
                 },

        'allow_discussion_post_editing' => {
                   text => '<b>'.&mt('Users can edit/delete own discussion posts').'</b>',
                   input => 'checkbox',
                 },
    );
    my $datatable;
    my $count;
    my ($cnum) = &get_course();
    my %sections = &Apache::loncommon::get_sections($cdom,$cnum);
    my @sections = sort( { $a <=> $b } keys(%sections));
    my %lt = &Apache::lonlocal::texthash (
                                          currone => 'Disallowed:',
                                          curmult => 'Disallowed:',
                                          add     => 'Disallow more:',
                                          del     => 'Delete?',
                                          sec     => 'Sections:',
                                         );

    foreach my $item (@{$ordered}) {
        $count ++;
        $datatable .= &item_table_row_start($items{$item}{text},$count);
        if ($item eq 'plc.roles.denied') {
            $datatable .= '<table>'.&role_checkboxes($cdom,$cnum,$item,$settings).
                          '</table>';
        } elsif ($item eq 'plc.users.denied') {
            $datatable .= &user_table($cdom,$item,undef,
                                      $settings->{$item},\%lt);
        } elsif ($item eq 'pch.roles.denied') {
            $datatable .= '<table>'.&role_checkboxes($cdom,$cnum,$item,$settings).
                          '</table>';
        } elsif ($item eq 'pch.users.denied') {
            $datatable .= &user_table($cdom,$item,undef,
                                      $settings->{$item},\%lt);
        } elsif ($item eq 'allow_limited_html_in_feedback') {
            $datatable .= &yesno_radio($item,$settings);
        } elsif ($item eq 'allow_discussion_post_editing') {
            $datatable .= &Apache::loncommon::start_data_table().
                          &Apache::loncommon::start_data_table_row().
                          '<th align="left">'.&mt('Role').'</th><th>'.
                          &mt('Sections').'</th>'.
                          &Apache::loncommon::end_data_table_row().
                          &role_checkboxes($cdom,$cnum,$item,$settings,1).
                          &Apache::loncommon::end_data_table();
        }
        $datatable .= &item_table_row_end();
    }
    $$rowtotal += scalar(@{$ordered});
    return $datatable;
}

sub role_checkboxes {
    my ($cdom,$cnum,$item,$settings,$showsections) = @_;
    my @roles = ('st','ad','ta','ep','in','cc');
    my $output;
    my (@current,@curr_roles,%currsec,@sections);
    if ($showsections) {
        my %sections = &Apache::loncommon::get_sections($cdom,$cnum);
        @sections = sort( { $a <=> $b } keys(%sections));
    }
    if (ref($settings) eq 'HASH') {
        if ($settings->{$item}) {
            @current = split(',',$settings->{$item});
            if ($showsections) {
                foreach my $role (@current) {
                    if ($role =~ /:/) {
                        my ($trole,$sec) = split(':',$role);
                        push(@curr_roles,$trole);
                        if (ref($currsec{$trole}) eq 'ARRAY') {
                            if (!grep(/^\Q$sec\E/,@{$currsec{$trole}})) {
                                push(@{$currsec{$trole}},$sec);
                            }
                        }
                    } else {
                        push(@curr_roles,$role);
                    }
                }
                @current = @curr_roles;
            }
        }
    }
    my $numinrow = 3;
    my $count = 0;
    foreach my $role (@roles) {
        my $checked = '';
        if (grep(/^\Q$role\E$/,@current)) {
            $checked = ' checked="checked" ';
        }
        my $plrole=&Apache::lonnet::plaintext($role);
        if ($showsections) {
            $output .= &Apache::loncommon::start_data_table_row();
        } else {
            my $rem = $count%($numinrow);
            if ($rem == 0) {
                if ($count > 0) {
                    $output .= '</tr>';
                }
                $output .= '<tr>';
            }
        }
        $output .= '<td align="left"><span class="LC_nobreak"><label><input type="checkbox" name='.
                   $item.'" value="'.$role.'"'.$checked.'/>&nbsp;'.
                   $plrole.'</label></span></td>';
        if ($showsections) {
            $output .= '<td align="left">'.
                       &select_sections($item,$role,\@sections,$currsec{$role}).
                       '</td></tr>';
        }
        $count ++;
    }
    my %adv_roles =
        &Apache::lonnet::get_course_adv_roles($env{'request.course.id'},1);
    my $total = @roles;
    foreach my $role (sort(keys(%adv_roles))) {
        if ($role =~ m{^cr/($match_domain)/($match_name)/\w$}) {
            my $rolename = $3;
            my $value = 'cr_'.$1.'_'.$2.'_'.$rolename;
            my $checked = '';
            if (grep(/^\Q$value\E$/,@current)) {
                $checked = ' checked="checked" ';
            }
            if ($showsections) {
                $output .= &Apache::loncommon::start_data_table_row();
            } else {
                my $rem = $count%($numinrow);
                if ($rem == 0) {
                    if ($count > 0) {
                        $output .= '</tr>';
                    }
                    $output .= '<tr>';
                }
            }
            $output .= '<td><span class="LC_nobreak"><label><input type="checkbox" name='.
                       $item.'" value="'.$value.'"'.$checked.' />&nbsp;'.$rolename.
                       '</label></span></td>';
            if ($showsections) {
                $output .= '<td>'.
                           &select_sections($item,$role,\@sections,$currsec{$role}).
                           '</td>'.&Apache::loncommon::end_data_table_row();
            }
            $total ++;
            $count ++;
        }
    }
    if (!$showsections) {
        my $rem = $total%($numinrow);
        my $colsleft = $numinrow - $rem;
        if ($colsleft > 1 ) {
            $output .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                       '&nbsp;</td>';
        } elsif ($colsleft == 1) {
            $output .= '<td class="LC_left_item">&nbsp;</td>';
        }
        $output .= '</tr>';
    }
    return $output;
}

sub print_classlists {
    my ($position,$cdom,$settings,$rowtotal) = @_;
    my @ordered;
    if ($position eq 'top') {
        @ordered = ('default_enrollment_start_date',
                    'default_enrollment_end_date');
    } elsif ($position eq 'middle') {
        @ordered = ('nothideprivileged');
    } else {
        @ordered = ('student_classlist_view',
                    'student_opt_in','student_classlist_portfiles');
    }
    my %items = (
        'default_enrollment_start_date' => {
                   text => '<b>'.&mt('Start date').'</b>',
                   input => 'dates',
                 },
        'default_enrollment_end_date'  => {
                   text => '<b>'.&mt('End date').'</b>',
                   input => 'dates',
                 },

        'nothideprivileged'   => {
                   text => '<b>'.&mt('Domain Coodinators in course').'</b>',
                   input => 'checkbox',
                 },

        'student_classlist_view'   => {
                   text => '<b>'.&mt('Student-viewable classlist').'</b>',
                   input => 'selectbox',
                   options => {
                                disabled => &mt('No viewable classlist'),
                                section  => &mt("Classlist of viewer's section"),
                                all      => &mt('Classlist of all students'),
                              },
                   order => ['disabled','all','section'],
                 },
        'student_opt_in' => {
                   text => '<b>'.&mt('Student agreement needed to be listed').'</b>',
                   input => 'radio',
                 },

        'student_classlist_portfiles' => {
                   text => '<b>'.&mt('Include link to accessible portfolio files').'</b>',
                   input => 'radio',
                 },
    );
    unless (($settings->{'student_classlist_view'} eq 'all') || 
            ($settings->{'student_classlist_view'} eq 'section')) { 
        $settings->{'student_classlist_view'} = 'disabled';
    }
    return &make_item_rows($cdom,\%items,\@ordered,$settings,$rowtotal);
}

sub print_appearance {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my %items = (
        'default_xml_style' => {
                   text => '<b>'.&mt('Default XML Style File').'</b> '.
                           '<a href="javascript:openbrowser'.
                           "('display','default_xml_style'".
                           ",'sty')".'">'.&mt('Select Style File').'</a>',
                   input => 'textbox',
                   size => 35,
                 },

        'pageseparators'  => {
                   text => '<b>'.&mt('Visibly Separate Items on Pages').'</b>',
                   input => 'radio',
                 },
        'disable_receipt_display' => {
                   text => '<b>'.&mt('Disable display of problem receipts').'</b>',
                   input => 'radio',
                 },
        'texengine'  => {
                   text => '<b>'.&mt('Force use of a specific math rendering engine.').'</b>',
                   input => 'selectbox',
                   options => {
                                jsMath   => 'jsMath',
                                mimetex => &mt('Convert to Images'),
                                tth      => &mt('TeX to HTML'),
                              },
                   order  => ['jsMath','mimetex','tth'],
                   nullval => &mt("None specified - use student's choice"),
                 },
        'tthoptions' => {
                   text => '<b>'.&mt('Default set of options to pass to tth/m when converting TeX').'</b>',
                   input => 'textbox',
                   size => 40,
                 },
    );
    return &make_item_rows($cdom,\%items,$ordered,$settings,$rowtotal);
}

sub print_grading {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my %items = (
        'grading'  => {
                   text => '<b>'.&mt('Grading').'</b>'.
                           &Apache::loncommon::help_open_topic('GradingOptions'),
                   input => 'selectbox',
                   options => {
                                standard => &mt('Standard: shows points'),
                                external => &mt('External: shows number of completed parts'),
                                spreadsheet => &mt('Spreadsheet: (with link to detailed scores)'), 
                              },
                   order => ['standard','external','spreadsheet'],
                 },
        'rndseed' => {
                   text => '<b>'.&mt('Randomization algorithm used').'</b>'.
                           '<span class="LC_error">'.'<br />'.
                           &mt('Modifying this will make problems have different numbers and answers!').
                           '</span>',
                   input => 'selectbox',
                   options => {
                                '32bit'  => '32bit',
                                '64bit'  => '64bit',
                                '64bit2' => '64bit2',
                                '64bit3' => '64bit3',
                                '64bit4' => '64bit4',
                                '64bit5' => '64bit5',
                              },
                   order => ['32bit','64bit','64bit2','64bit3','64bit4','64bit5'],
                 },
        'receiptalg'  => {
                   text => '<b>'.&mt('Receipt algorithm used').'</b><br />'.
                           &mt('This controls how receipt numbers are generated.'),
                   input => 'selectbox',
                   options => {
                                receipt  => 'receipt',
                                receipt2 => 'receipt2',
                                receipt3 => 'receipt3',
                              },
                   order => ['receipt','receipt2','receipt3'],
                 },
        'disablesigfigs' => {
                   text => '<b>'.&mt('Disable checking of Significant Figures').'</b>',
                   input => 'radio',
                 },
    );
    return &make_item_rows($cdom,\%items,$ordered,$settings,$rowtotal);
}

sub print_printouts {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my %items = (
        problem_stream_switch => {
            text => '<b>'.&mt('Allow problems to be split over pages').'</b>',
            input => 'radio',
                                 },
        suppress_tries => {
            text => '<b>'.&mt('Suppress number of tries in printing').'</b>',
            input => 'radio',
                          },
        default_paper_size => {
            text => '<b>'.&mt('Default paper type').'</b>',
            input => 'selectbox',
            options => {
                         Letter    => &mt('Letter').' [8 1/2x11 in]',
                         Legal     => &mt('Legal').' [8 1/2x14 in]',
                         Tabloid   => &mt('Tabloid').' [11x17 in]',
                         Executive => &mt('Executive').' [7 1/2x10 in]',
                         A2        => &mt('A2').' [420x594 mm]',
                         A3        => &mt('A3').' [297x420 mm]',
                         A4        => &mt('A4').' [210x297 mm]',
                         A5        => &mt('A5').' [148x210 mm]',
                         A6        => &mt('A6').' [105x148 mm]',
                       },
            order => ['Letter','Legal','Tabloid','Executive','A2','A3','A4','A5','A6'],
            nullval => 'None specified',
                              },
        print_header_format => {
            text => '<b>'.&mt('Print header format').'</b>',
            input => 'checkbox',
                               },
        disableexampointprint => {
            text => '<b>'.&mt('Disable automatically printing point values on exams').'</b>',
            input => 'radio',
                                 },
    );
    return &make_item_rows($cdom,\%items,$ordered,$settings,$rowtotal);
}

sub print_spreadsheet {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my $SelectSpreadsheetFile=&mt('Select Spreadsheet File');
    my %items = (
        spreadsheet_default_classcalc => {
            text => '<b>'.&mt('Default Course Spreadsheet').'</b> '.
                    '<span class="LC_nobreak"><a href="javascript:openbrowser'.
                    "('display','spreadsheet_default_classcalc'".
                    ",'spreadsheet')".'">'.$SelectSpreadsheetFile.'</a></span>',
            input => 'textbox',
                                         },
        spreadsheet_default_studentcalc => {
            text => '<b>'.&mt('Default Student Spreadsheet').'</b> '.
                    '<span class="LC_nobreak"><a href="javascript:openbrowser'.
                    "('display','spreadsheet_default_calc'".
                    ",'spreadsheet')".'">'.$SelectSpreadsheetFile.'</a></span>',
            input => 'textbox',
                                           },
        spreadsheet_default_assesscalc => {
            text => '<b>'.&mt('Default Assessment Spreadsheet').'</b> '.
                    '<span class="LC_nobreak"><a href="javascript:openbrowser'.
                    "('display','spreadsheet_default_assesscalc'".
                    ",'spreadsheet')".'">'.$SelectSpreadsheetFile.'</a></span>',
            input => 'textbox',
                                          },
        hideemptyrows => {
            text => '<b>'.&mt('Hide Empty Rows in Spreadsheets').'</b>',
            input => 'radio',
                         },
                );
    return &make_item_rows($cdom,\%items,$ordered,$settings,$rowtotal);
} 

sub print_bridgetasks {
    my ($cdom,$settings,$ordered,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        return;
    }
    my %items = (
         task_messages => {
              text => '<b>'.&mt('Send message to student when clicking Done on Tasks').'</b>',
              input => 'selectbox',
              options => {
                           only_student => &mt('Send message to student'),
                           student_and_user_notes_screen => &mt('Message to student and add to user notes'),
                         },
              order   => ['only_student','student_and_user_notes_screen'],
              nullval => &mt('No message or record in user notes'),
                          },
         task_grading => {
              text => '<b>'.&mt('Bridge Task grading by instructors and TAs in sections').'</b>',
              input => 'selectbox',
              options => {
                           any => &mt('Grade BTs in any section'),
                           section => &mt('Grade BTs only in own section')
                         },
              order => ['any','section'],
                         },
         suppress_embed_prompt => {
             text => '<b>'.&mt('Hi$de upload references prompt if uploading file to portfolio').'</b><span class="LC_nobreak">&nbsp;'.
                     &mt('(applies when current role is student)').'</span>',
             input => 'radio',
                                  },
                );
    return &make_item_rows($cdom,\%items,$ordered,$settings,$rowtotal);
}

sub print_other {
    my ($cdom,$settings,$allitems,$rowtotal) = @_;
    unless ((ref($settings) eq 'HASH') && (ref($allitems) eq 'ARRAY')) {
        return;
    }
    my @ordered;
    my %items;
    if (ref($settings) eq 'HASH') {
        foreach my $parameter (sort(keys(%{$settings}))) {
            next if (grep/^\Q$parameter\E$/,@{$allitems});
            next if (($parameter eq 'course.helper.not.run') && 
                     (!exists($env{'user.role.dc./'.$env{'request.role.domain'}.'/'}))); 
            unless (($parameter =~ m/^internal\./)||($parameter =~ m/^metadata\./) ||
                    ($parameter =~ m/^selfenroll_/) || ($parameter =~ /_selfenroll$/)
                    || ($parameter eq 'type') ||
                    ($parameter =~ m/^(cc|in|ta|ep|ad|st)\.plaintext$/)) {
                push(@ordered,$parameter);
                $items{$parameter} = {
                    text  => $parameter,
                    input => 'textbox',
                    size  => '15',
                                     },
            }
        }
    }
    return &make_item_rows($cdom,\%items,\@ordered,$settings,$rowtotal);
}

sub item_table_row_start {
    my ($text,$count) = @_;
    my $output;
    if ($count%2) {
        $output .= '<tr class="LC_odd_row">';
    } else {
        $output .= '<tr>';
    }
    $output .= '<td class="LC_left_item">'.$text.
               '</td><td class="LC_right_item">';
    return $output;
}

sub item_table_row_end {
    return '</td></tr>';
}

sub yesno_radio {
    my ($item,$settings) = @_;
    my $itemon = ' ';
    my $itemoff = ' checked="checked" ';
    if (ref($settings) eq 'HASH') {
        if ($settings->{$item} eq 'yes') {
            $itemon = $itemoff;
            $itemoff = ' ';
        }
    }
    return '<span class="LC_nobreak"><label>'.
           '<input type="radio" name="'.$item.'"'.
           $itemon.' value="yes" />'.&mt('Yes').'</label>&nbsp;'.
           '<label><input type="radio" name="'.$item.'"'.
           $itemoff.' value="" />'.&mt('No').'</label></span>';
}

sub select_from_options {
    my ($item,$order,$options,$curr,$nullval,$multiple,$maxsize,$onchange) = @_;
    my $output;
    if ((ref($order) eq 'ARRAY') && (ref($options) eq 'HASH')) {
        $output='<select name="'.$item.'" '.$onchange;
        if ($multiple) {
            $output .= ' multiple="multiple"';
            my $num = @{$order};
            $num ++ if ($nullval ne '');
            if (($maxsize) && ($maxsize < $num)) {
                $output .= ' size="'.$maxsize.'"';
            }
        }
        $output .= '>'."\n";
        if ($nullval ne '') {
            $output .= '<option value=""';
            if (ref($curr) eq 'ARRAY') {
                if ((@{$curr} == 0) || (grep(/^$/,@{$curr}))) {
                    $output .= ' selected="selected" ';
                }
            } else {
                if ($curr eq '') {
                    $output .= ' selected="selected" ';
                }
            }
            $output .= '>'.$nullval.'</option>';
        }
        foreach my $option (@{$order}) {
            $output.= '<option value="'.$option.'"';
            if (ref($curr) eq 'ARRAY') {
                if (grep(/^\Q$option\E$/,@{$curr})) {
                    $output .= ' selected="selected" ';
                }
            } else {
                if ($option eq $curr) {
                    $output.=' selected="selected"';
                }
            }
            $output.=">$options->{$option}</option>\n";
        }
        $output.="</select>";
    }
    return $output;
}

sub make_item_rows {
    my ($cdom,$items,$ordered,$settings,$rowtotal) = @_;
    my $datatable;
    if ((ref($items) eq 'HASH') && (ref($ordered) eq 'ARRAY')) {
        my $count = 0;
        foreach my $item (@{$ordered}) {
            $count ++;
            $datatable .= &item_table_row_start($items->{$item}{text},$count);
            if ($item eq 'nothideprivileged') {
                $datatable .= &nothidepriv_row($cdom,$item,$settings);
            } elsif ($item eq 'print_header_format') {
                $datatable .= &print_hdrfmt_row($item,$settings);
            } elsif ($items->{$item}{input} eq 'dates') {
               $datatable .=
                   &Apache::lonhtmlcommon::date_setter('display',$item,
                                                       $settings->{$item});
            } elsif ($items->{$item}{input} eq 'radio') {
                $datatable .= &yesno_radio($item,$settings);
            } elsif ($items->{$item}{input} eq 'selectbox') {
                my $curr = $settings->{$item};
                $datatable .=
                    &select_from_options($item,$items->{$item}{'order'},
                                         $items->{$item}{'options'},$curr,
                                         $items->{$item}{'nullval'});
            } elsif ($items->{$item}{input} eq 'textbox') {
                $datatable .= 
                    &Apache::lonhtmlcommon::textbox($item,$settings->{$item},
                                                    $items->{$item}{size});
            }
            $datatable .= &item_table_row_end();
        }
        if (ref($rowtotal)) {
            $$rowtotal += scalar(@{$ordered});
        }
    }
    return $datatable;
}

sub nothidepriv_row {
    my ($cdom,$item,$settings) = @_;
    my ($cnum) = &get_course();
    my %nothide;
    my $datatable;
    if (ref($settings) eq 'HASH') {
        if ($settings->{$item} ne '') {
            foreach my $user (split(/\s*\,\s*/,$settings->{$item})) {
                if ($user !~ /:/) {
                    $nothide{join(':',split(/[\@]/,$user))}=1;
                } else {
                    $nothide{$user} = 1;
                }
            }
        }
    }
    my %coursepersonnel = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
    my $now = time;
    my @privusers;
    foreach my $person (keys(%coursepersonnel)) {
        my ($role,$user,$usec) = ($person =~ /^([^:]*):([^:]+:[^:]+):([^:]*)/);
        $user =~ s/:$//;
        my ($end,$start) = split(/:/,$coursepersonnel{$person});
        if ($end == -1 || $start == -1) {
            next;
        }
        my ($uname,$udom) = split(':',$user);
        if (&Apache::lonnet::privileged($uname,$udom)) {
            push(@privusers,$user);
        }
    }
    if (@privusers) {
        $datatable .= '<table align="right">';
        foreach my $user (sort(@privusers)) {
            my $hideon = ' checked="checked" ';
            my $hideoff = '';
            if ($nothide{$user}) {
                $hideoff = $hideon;
                $hideon = '';
            }
            my ($uname,$udom) = split(':',$user);
            $datatable .=  '<tr><td align="left">'.
                           &Apache::loncommon::aboutmewrapper(
                           &Apache::loncommon::plainname($uname,$udom,'firstname'),
                           $uname,$udom,'aboutuser').
                          '</td><td align="left">'.
                          '<span class="LC_nobreak"><label>'.
                          '<input type="radio" name="'.$item.'_'.$user.'"'.
                          $hideon.' value="yes" />'.&mt('Hidden').'</label>&nbsp;'.
                          '<label><input type="radio" name="'.$item.'_'.$user.'"'.                          $hideoff.' value="" />'.&mt('Shown').'</label></span></td>'.
                          '</tr>';
        }
        $datatable .= '</table>';
    } else {
        $datatable .= &mt('No Domain Coordinators have course roles');
    }
    return $datatable;
}

sub print_hdrfmt_row {
    my ($item,$settings) = @_;
    my @curr;
    my $currnum = 0;
    my $maxnum = 2;
    my $currstr;
    if ($settings->{$item} ne '') {
        $currstr .= '<b>'.&mt('Current print header:').' <span class="LC_warning"><tt>'.
                   $settings->{$item}.'</tt></span></b><br />';
        my @current = split(/(%\d*[nca])/,$settings->{$item});
        foreach my $item (@current) {
            unless ($item eq '') {
                push(@curr,$item);
            }
        }
        $currnum = @curr;
        $maxnum += $currnum;
    }

    my $output = <<ENDJS;

<script type="text/javascript" language="Javascript">

function reOrder(chgnum) {
    var maxnum = $maxnum;
    var oldidx = 'printfmthdr_oldpos_'+chgnum;
    var newidx = 'printfmthdr_pos_'+chgnum;
    oldidx = getIndexByName(oldidx);
    newidx = getIndexByName(newidx);
    var oldpos = document.display.elements[oldidx].value;
    var newpos = document.display.elements[newidx].options[document.display.elements[newidx].selectedIndex].value;
    document.display.elements[oldidx].value = newpos;
    var chgtype = 'up';
    if (newpos < oldpos) {
        chgtype = 'down';
    }
    for (var j=0; j<maxnum; j++) {
        if (j != chgnum) {
            oldidx = 'printfmthdr_oldpos_'+j;
            newidx = 'printfmthdr_pos_'+j;
            oldidx = getIndexByName(oldidx);
            newidx = getIndexByName(newidx);
            var currpos = document.display.elements[newidx].options[document.display.elements[newidx].selectedIndex].value;
            var currsel = document.display.elements[newidx].selectedIndex;
            if (chgtype == 'up') {
                if ((currpos > oldpos) && (currpos <= newpos)) {
                    document.display.elements[newidx].selectedIndex = currsel-1;
                    document.display.elements[oldidx].value = document.display.elements[newidx].options[document.display.elements[newidx].selectedIndex].value;
                }
            } else {
                if ((currpos >= newpos) && (currpos < oldpos)) {
                    document.display.elements[newidx].selectedIndex = currsel+1;
                    document.display.elements[oldidx].value = document.display.elements[newidx].options[document.display.elements[newidx].selectedIndex].value;
                }
            }
        }
    }
    return;
}

function getIndexByName(item) {
    for (var i=0;i<document.display.elements.length;i++) {
        if (document.display.elements[i].name == item) {
            return i;
        }
    }
    return -1;
}

</script>

ENDJS
    $output .= $currstr.&Apache::loncommon::start_data_table();
    if (@curr > 0) {
        for (my $i=0; $i<@curr; $i++) {
            my $pos = $i+1;
            $output .= &Apache::loncommon::start_data_table_row().
                       '<td align="left"><span class="LC_nobreak">'.
                       &position_selector($pos,$i,$maxnum).&mt('Delete:').
                       '<input type="checkbox" name="printfmthdr_del_'.$i.
                       '" /></span></td>';
            if ($curr[$i] =~ /^%\d*[nca]$/) {
                my ($limit,$subst) = ($curr[$i] =~ /^%(\d*)([nca])$/);
                $output .= '<td align="left">'.
                           &substitution_selector($i,$subst,$limit).'</td>';
            } else {
                $output .= '<td colspan="2" align="left">'.&mt('Text').'<br />'.
                           '<input type="textbox" name="printfmthdr_text_'.$i.'"'.
                           ' value="'.$curr[$i].'" size="25" /></td>';
            }
            $output .= &Apache::loncommon::end_data_table_row();
        }
    }
    my $pos = $currnum+1; 
    $output .= &Apache::loncommon::start_data_table_row().
               '<td align="left"><span class="LC_nobreak">'.
               &position_selector($pos,$currnum,$maxnum).
               '<b>'.&mt('New').'</b></span></td><td align="left">'.
               &substitution_selector($currnum).'</td>'.
               &Apache::loncommon::end_data_table_row();
    $pos ++;
    $currnum ++;
    $output .= &Apache::loncommon::start_data_table_row().
               '<td align="left"><span class="LC_nobreak">'.
               &position_selector($pos,$currnum,$maxnum).
               '<b>'.&mt('New').'</b></span></td>'.
               '<td colspan="2" align="left">'.&mt('Text').'<br />'.
               '<input type="textbox" name="printfmthdr_text_'.$currnum.
               '" value="" size ="25" /></td>'.
               &Apache::loncommon::end_data_table_row().
               &Apache::loncommon::end_data_table(); 
    return $output;
}

sub position_selector {
    my ($pos,$num,$maxnum) = @_;
    my $output = '<select name="printfmthdr_pos_'.$num.'" onchange="reOrder('."'$num'".');">';
    for (my $j=1; $j<=$maxnum; $j++) {
        my $sel = '';
        if ($pos == $j) {
            $sel = ' selected="selected"';
        }
        $output .= '<option value="'.$j.'"'.$sel.'">'.$j.'</option>';
    }
    $output .= '</select><input type="hidden" name="printfmthdr_oldpos_'.$num.
               '" value="'.$pos.'" />';
    return $output;
}

sub substitution_selector {
    my ($num,$subst,$limit) = @_;
    my %lt = &Apache::lonlocal::texthash(
                    n => 'student name',
                    c => 'course ID',
                    a => 'assignment note',
             );
    my $output .= &mt('Substitution').'<br />'.
                  '<select name=""printfmthdr_sub__'.$num.'">';
    if ($subst eq '') {
        $output .= '<option value="" selected="selected"> </option>';
    }
    foreach my $field ('n','c','a') {
        my $sel ='';
        if ($subst eq $field) {
            $sel = ' selected="selected"';
        }
        $output .= '<option value="'.$field.'"'.$sel.'>'.
                   $lt{$field}.'</option>';
    }
    $output .= '</select></td><td align="left">'.&mt('Size limit').'<br />'.
               '<input type="textbox" name="printfmthdr_limit_'.$num.
               '" value="'.$limit.'" size="5" /></span>';
    return $output;
}

sub modify_crsenv {
    my ($action,$cdom,%domconfig) = @_;
    return;
}

1;