File:  [LON-CAPA] / loncom / interface / loncoursegroups.pm
Revision 1.49: download - view: text, annotated - select for diffs
Fri Jul 7 21:25:02 2006 UTC (17 years, 10 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
Replacing grppg with smppg for file name of group home pages. Detection of group context from presence of course's domain and coursenumber in page URL (instead of a username and user domain).

# The LearningOnline Network with CAPA
#
# $Id: loncoursegroups.pm,v 1.49 2006/07/07 21:25:02 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::loncoursegroups;

use strict;
use Apache::lonnet;
use Apache::loncommon;
use Apache::lonhtmlcommon;
use Apache::lonlocal;
use Apache::lonnavmaps;
use Apache::longroup;
use Apache::portfolio;
use Apache::Constants qw(:common :http);
use lib '/home/httpd/lib/perl/';
use LONCAPA;

sub handler {
    my ($r) = @_;

    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;

    if ($r->header_only) {
        return OK;
    }

    #  Needs to be in a course
    if (! ($env{'request.course.fn'})) {
        # Not in a course
        $env{'user.error.msg'}=
     "/adm/coursegroups:mdg:0:0:Cannot edit or view course groups";
        return HTTP_NOT_ACCEPTABLE;
    }

    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                        ['action','refpage','state','groupname','branch']);
    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};

    my $view_permission =
          &Apache::lonnet::allowed('vcg',$env{'request.course.id'});
    my $manage_permission =
          &Apache::lonnet::allowed('mdg',$env{'request.course.id'});
    &Apache::lonhtmlcommon::clear_breadcrumbs();

    my $gpterm = &Apache::loncommon::group_term();
    my $ucgpterm = $gpterm;
    $ucgpterm =~ s/^(\w)/uc($1)/e;
    my $crstype = &Apache::loncommon::course_type();

    my %functions = (
                      email => 'E-mail',
                      discussion => 'Discussion boards',
                      chat => 'Chat',
                      files => 'File repository',
                      roster => 'Membership roster',
                      homepage => $ucgpterm.' home page',
                    );

    my %idx = ();
    $idx{id} = &Apache::loncoursedata::CL_ID();
    $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
    $idx{udom} = &Apache::loncoursedata::CL_SDOM();
    $idx{uname} = &Apache::loncoursedata::CL_SNAME();
    $idx{section} = &Apache::loncoursedata::CL_SECTION();

    my $action = $env{'form.action'};
    my $state = $env{'form.state'};
    if ((!defined($action)) || ($action eq 'view')) {
        if (!defined($state)) {
            $state = 'view';
        }
    }
    if ($action eq 'create' || $action eq 'modify' || $action eq 'view') { 
        if ($view_permission || $manage_permission) {
            &group_administration($r,$action,$state,$cdom,$cnum,
                                  \%functions,\%idx,$view_permission,
                                  $manage_permission,$gpterm,$ucgpterm,
				  $crstype);
        } else {
            $r->print(&mt('You do not have [_1] administration '.
                          'privileges in this [_2]',$gpterm,lc($crstype)));
        }
    } else {
        &print_main_menu($r,$cdom,$cnum,\%functions,\%idx,$view_permission,
			 $manage_permission,$action,$state,$gpterm,$ucgpterm,
			 $crstype);
    }
    return OK;
}

sub print_main_menu {
    my ($r,$cdom,$cnum,$functions,$idx,$view_permission,$manage_permission,
	$action,$state,$gpterm,$ucgpterm,$crstype) = @_;
    my $pagename = "$crstype $ucgpterm".'s';
    my $jscript = qq|
function changeSort(caller) {
    document.$state.sortby.value = caller;
    document.$state.submit();
}\n|;
    $r->print(&header($pagename,$jscript,$action,$state));
    &Apache::lonhtmlcommon::add_breadcrumb
        ({href=>"/adm/coursegroups",
          text=>"$pagename"});
    $r->print(&Apache::lonhtmlcommon::breadcrumbs($pagename));
    &display_groups($r,$cdom,$cnum,$functions,$idx,$view_permission,
		    $manage_permission,$action,$state,$gpterm,$ucgpterm,
		    $crstype);
    $r->print(&footer());
    return;
}

sub display_groups {
    my ($r,$cdom,$cnum,$functions,$idx,$view_permission,
        $manage_permission,$action,$state,$gpterm,$ucgpterm,$crstype) = @_;
    my %curr_groups = ();
    my %grp_info = ();
    my %actionlinks = (
      modify => '<a href="/adm/coursegroups?action=modify&refpage='.
                         $env{'form.refpage'}.'&groupname=',
      view => '<a href="/adm/'.$cdom.'/'.$cnum.'/',
      delete => '<a href="/adm/coursegroups?action=delete&refpage='.
                         $env{'form.refpage'}.'&groupname=',
    );
    my %lt = &Apache::lonlocal::texthash( 
                          modify => 'Modify',
                          view   => 'View',
                          delete => 'Delete',
                          act    => 'Action',
                          gname  => "$ucgpterm Name",
                          desc   => 'Description',
                          crea   => 'Creator',
                          crtd   => 'Created',
                          last   => 'Last Modified',
                          func   => 'Functionality',
                          quot   => 'Quota (Mb)',
                          memb   => 'Members',
                          file   => 'Files',
                          dibd   => 'Discussion Boards',
                          dius   => 'Disk Use (%)',
                          nogr   => 'No '.$gpterm.'s exist.',
                          crng   => 'Create a new '.$gpterm,
                          alth   => 'Although your current role has privileges'.
                                    ' to view any existing '.$gpterm.'s in this'.
                                    lc($crstype).', you do not have privileges'.
                                    'to create new '.$gpterm.'s.',
                     );
    if ($view_permission) {
        if (!defined($action)) {
            $action = 'view';
        }
        my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
        if (%curr_groups) {
            if ($manage_permission) {
                $r->print('<br /><a href="/adm/coursegroups?action=create&refpage='.$env{'form.refpage'}.'">'.$lt{'crng'}.'</a>');
            }
            $r->print('<br /><br />');
	    $r->print(&Apache::loncommon::start_data_table().
		      &Apache::loncommon::start_data_table_header_row());
		      
            $r->print(<<"END");
        <th>$lt{'act'}</th>
        <th><a href="javascript:changeSort('groupname')">$lt{'gname'}</a></th>
        <th><a href="javascript:changeSort('description')">$lt{'desc'}</a></th>
        <th><a href="javascript:changeSort('creator')">$lt{'crea'}</a></th>
        <th><a href="javascript:changeSort('creation')">$lt{'crtd'}</a></th>
        <th><a href="javascript:changeSort('modified')">$lt{'last'}</a></th>
        <th>$lt{'func'}</b></td>
        <th><a href="javascript:changeSort('quota')">$lt{'quot'}</a></th>
        <th><a href="javascript:changeSort('totalmembers')">$lt{'memb'}</a></th>
        <th><a href="javascript:changeSort('totalfiles')">$lt{'file'}</a></th>
        <th><a href="javascript:changeSort('boards')">$lt{'dibd'}</a></th>
        <th><a href="javascript:changeSort('diskuse')">$lt{'dius'}</a></th>
END
	    $r->print(&Apache::loncommon::end_data_table_header_row());
            my %Sortby = ();
            foreach my $group (sort(keys(%curr_groups))) {
                %{$grp_info{$group}} = 
                                  &Apache::longroup::get_group_settings(
                                                         $curr_groups{$group});
                my $members_result = &group_members($cdom,$cnum,$group,
                                                    \%grp_info);
                my $port_path = '/userfiles/groups/'.$group.'/portfolio';
                my $port_dir = &Apache::loncommon::propath($cdom,$cnum).$port_path;
                my $totaldirs = 0;
                my $totalfiles = 0;
                &group_files($group,$port_dir,\$totalfiles,\$totaldirs);
                $grp_info{$group}{'totalfiles'} = $totalfiles;
                $grp_info{$group}{'totaldirs'} = $totaldirs;
                my $diskuse = &Apache::lonnet::diskusage($cdom,$cnum,$port_dir);
                if ($grp_info{$group}{'quota'} > 0) {
                    my $pct_use = 0.1 * $diskuse/$grp_info{$group}{'quota'};
                    $grp_info{$group}{'diskuse'} = sprintf("%.0f",$pct_use);
                } else {
                    $grp_info{$group}{'diskuse'} = 'N/A';
                }
                my ($groupboards,$boardshash)=&Apache::longroup::get_group_bbinfo(
                                                               $cdom,$cnum,$group);
                $grp_info{$group}{'boards'} = scalar(@{$groupboards});
                if ($env{'form.sortby'} eq 'groupname') {
                    push(@{$Sortby{$group}},$group);
                } elsif ($env{'form.sortby'} eq 'description') {
                    push(@{$Sortby{$grp_info{$group}{'description'}}},$group);
                } elsif ($env{'form.sortby'} eq 'creator') {
                    push(@{$Sortby{$grp_info{$group}{'creator'}}},$group);
                } elsif ($env{'form.sortby'} eq 'creation') {
                    push(@{$Sortby{$grp_info{$group}{'creation'}}},$group);
                } elsif ($env{'form.sortby'} eq 'modified') {
                    push(@{$Sortby{$grp_info{$group}{'modified'}}},$group);
                } elsif ($env{'form.sortby'} eq 'quota') {
                    push(@{$Sortby{$grp_info{$group}{'quota'}}},$group);
                } elsif ($env{'form.sortby'} eq 'totalmembers') {
                    push(@{$Sortby{$grp_info{$group}{'totalmembers'}}},
                                                                       $group);
                } elsif ($env{'form.sortby'} eq 'totalfiles') {
                    push(@{$Sortby{$grp_info{$group}{'totalfiles'}}},$group);
                } elsif ($env{'form.sortby'} eq 'boards') {
                    push(@{$Sortby{$grp_info{$group}{'boards'}}},$group);
                } elsif ($env{'form.sortby'} eq 'diskuse') {
                    push(@{$Sortby{$grp_info{$group}{'diskuse'}}},$group);
                } else {
                    push(@{$Sortby{$group}},$group);
                }
            }
            foreach my $key (sort(keys(%Sortby))) {
                foreach my $group (@{$Sortby{$key}}) {
                    my $description = 
			&unescape($grp_info{$group}{'description'});
                    my $creator = $grp_info{$group}{'creator'};
                    my $creation = $grp_info{$group}{'creation'};
                    my $modified = $grp_info{$group}{'modified'}; 
                    my $quota = $grp_info{$group}{'quota'};
                    my $totalmembers = $grp_info{$group}{'totalmembers'};
                    my $totalfiles = $grp_info{$group}{'totalfiles'};
                    my $totaldirs = $grp_info{$group}{'totaldirs'};
                    my $boards = $grp_info{$group}{'boards'};
                    my $diskuse = $grp_info{$group}{'diskuse'};
                    my $functionality;
                    foreach my $tool (sort(keys(%{$functions}))) {
                        if ($grp_info{$group}{functions}{$tool} eq 'on') {
                            $functionality .= ' '.$tool;
                        }
                    }
                    if (!$functionality) {
                        $functionality = &mt('None available');
                    }
                    my $link = $actionlinks{$action};
                    if ($action eq 'modify' || $action eq 'delete') {
                        $link .= $group;
                    } else {
                        $link .= $group.'/smppg';
                    }
                    $link .= '">'.$lt{$action}.'</a>';
                    if ($action eq 'view') { 
                        if (($manage_permission) && 
                            ($env{'form.refpage'} ne 'enrl')) {
                            $link .= '&nbsp;&nbsp;'.$actionlinks{'modify'}.
                                      $group.'">'.$lt{'modify'}.'</a>';
                        }
                    }
                    $r->print(&Apache::loncommon::start_data_table_row('LC_data_table_dense').
			      '<td>'.$link.'</td>'.
			      '<td>'.$group.'</td>'.
			      '<td>'.$description.'</td>'.
			      '<td>'.$creator.'</td>'.
			      '<td>'. &Apache::lonnavmaps::timeToHumanString($creation).'</td>'.
			      '<td>'. &Apache::lonnavmaps::timeToHumanString($modified).'</td>'.
			      '<td>'.$functionality.'</td>'.
			      '<td align="right">'.$quota.'</td>'.
			      '<td align="right">'.$totalmembers.'</td>'.
			      '<td align="right"><nobr>'.&mt('Files: ').$totalfiles.'</nobr><br /><nobr>'.&mt('Folders: ').$totaldirs.'</nobr></td>'.
			      '<td align="right">'.$boards.'</td>'.
			      '<td align="right">'.$diskuse.'</td>'.
			      &Apache::loncommon::end_data_table_row());
                }
            }
            $r->print(&Apache::loncommon::end_data_table());
            $r->print('<input type="hidden" name="refpage" '.
                      'value="'.$env{'form.refpage'}.'" />');
            if ($action eq 'view') {
                if (!defined($state)) {
                    $state = 'view';
                }
                $r->print('<input type="hidden" name="state" value="'.
                      $state.'" />');
            }
        } else {
            $r->print($lt{'nogr'});
            if ($manage_permission) {
                $r->print('<br /><br /><a href="/adm/coursegroups?action=create&refpage='.$env{'form.refpage'}.'">'.$lt{'crng'}.'</a>');
            } else {
                $r->print('<br /><br />'.$lt{'alth'});

            }
        }
    } else {
        my @coursegroups = split(/:/,$env{'request.course.groups'});
        if (@coursegroups > 0) {
            $r->print('<br /><br />');
            my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
            if (%curr_groups) {
                foreach my $group (@coursegroups) {
                    my %group_info =  &Apache::longroup::get_group_settings(
                                        $curr_groups{$group});
                    my $description = &unescape(
                                        $group_info{description});
                    my ($uname,$udom) = split(/:/,$group_info{creator});
                    $r->print('<font size="+1"><a href="/adm/'.$udom.'/'.$uname.'/'.$group.'/smppg">'.$group,'</a><font><br /><small>'.$description.'</small><br /><br />');
                }
            }
        } else {
            $r->print(&mt('You are not currently a member of any '.
                          'active [_1]s in this [_2]',$gpterm,
                          lc($crstype)));
        }
    }
    return;
}

sub group_administration {
    my ($r,$action,$state,$cdom,$cnum,$functions,$idx,$view_permission,
	$manage_permission,$gpterm,$ucgpterm,$crstype) = @_;
    my %sectioncount = ();
    my @tools = ();
    my @types = ();
    my @roles = ();
    my @sections = ();
    my %users = ();
    my %userdata = ();
    my @members = ();
    my %usertools = ();
    my %stored = ();
    my %memchg;
    my @member_changes = ('deletion','expire','activate','reenable',
                          'changefunc','changepriv');
    my ($groupname,$description,$startdate,$enddate,$granularity,$specificity,
        $quota,$validate_script);

    if (defined($env{'form.groupname'})) {
        $groupname = $env{'form.groupname'};
    }

    if (($action eq 'create') && ($state eq '')) {
        $state = 'pick_name';
    }
    if (($action eq 'create') || 
        (($action eq 'modify') && ($state eq 'chgresult'))) { 
        ($startdate,$enddate) = &get_dates_from_form();
        if (defined($env{'form.description'})) {
            $description = $env{'form.description'};
        }
        if (defined($env{'form.tool'})) {
            @tools=&Apache::loncommon::get_env_multiple('form.tool');
        }
        if (defined($env{'form.granularity'})) {
            $granularity=$env{'form.granularity'};
        }
        if (defined($env{'form.specificity'})) {
            $specificity=$env{'form.specificity'};
        }
        if (defined($env{'form.quota'})) {
            $quota=$env{'form.quota'};
        }
    }
    if (($action eq 'create') || (($action eq 'modify') 
        && (($state eq 'pick_privs') || ($state eq 'addresult')))) {
        if (defined($env{'form.member'})) {
            @members = &Apache::loncommon::get_env_multiple('form.member');
            foreach my $user (@members) {
                %{$usertools{$user}} = ();
            }
        }
    }

    if ($action eq 'modify') {
        if ($state eq '') {
            if (defined($env{'form.groupname'})) {
                $state = 'pick_task';
            } else {
                $state = 'pick_group';
            }
        } else {
            %stored = &retrieve_settings($cdom,$cnum,$groupname);
            if (ref($stored{'types'}) eq 'ARRAY') {
                @types = @{$stored{'types'}};
            }
            if (ref($stored{'roles'}) eq 'ARRAY') {
                @roles = @{$stored{'roles'}};
            }
            if (ref($stored{'sectionpick'}) eq 'ARRAY') {
                @sections = @{$stored{'sectionpick'}};
            }
            unless ($state eq 'chgresult') {
                if (ref($stored{'tool'}) eq 'ARRAY') { 
                    @tools = @{$stored{'tool'}};
                }
                $startdate = $stored{'startdate'};
                $enddate = $stored{'enddate'};
                $description = $stored{'description'};
                $granularity = $stored{'granularity'};
                $specificity =  $stored{'specificity'};
                $quota = $stored{'quota'};
            }
        }
    }

    my $toolprivs = &Apache::longroup::get_tool_privs($gpterm);

    my $fixedprivs = &Apache::longroup::get_fixed_privs();

    my %elements = 
	(
	 create => {
	     pick_name => {
		 startdate_month  => 'selectbox',
		 startdate_hour   => 'selectbox',
		 enddate_month    => 'selectbox',
		 enddate_hour     => 'selectbox',
		 startdate_day    => 'text',
		 startdate_year   => 'text',
		 startdate_minute => 'text',
		 startdate_second => 'text',
		 enddate_day      => 'text',
		 enddate_year     => 'text',
		 enddate_minute   => 'text',
		 enddate_second   => 'text',
		 groupname        => 'text',
		 description      => 'text',
                 quota            => 'text',
		 tool             => 'checkbox',
		 granularity      => 'radio',
		 no_end_date      => 'checkbox',
	     },
	     pick_members => {
		 member          => 'checkbox',
		 defpriv         => 'checkbox',
	     },
	 },
	 );
    
    $elements{'modify'} = {
	change_settings => {
	    %{$elements{'create'}{'pick_name'}},
	    specificity => 'radio',
	    defpriv     => 'checkbox',
	    autorole    => 'checkbox',
	    autoadd     => 'radio',
	    autodrop    => 'radio',
	},
	add_members => {
	    types       => 'selectbox',
	    roles       => 'selectbox',
	},
    };

    if (ref($stored{'autorole'}) eq 'ARRAY') {
        foreach my $role (@{$stored{'autorole'}}) {
            unless ($role eq 'cc') {
                $elements{'modify'}{'change_settings'}{'sec_'.$role} = 
                                                                   'selectbox';
            }
        }
    }

    if (($action eq 'create') && ($state eq 'pick_name')) {
        $elements{'create'}{'pick_name'}{'types'} = 'selectbox';
        $elements{'create'}{'pick_name'}{'roles'} = 'selectbox';
    }
    if ((($action eq 'create') &&  
        (($state eq 'pick_name') || ($state eq 'pick_privs'))) ||
       (($action eq 'modify') && (($state eq 'change_settings') ||
                                  ($state eq 'add_members')))) {
        %sectioncount = &Apache::loncommon::get_sections($cdom,$cnum);
        if (%sectioncount) {
            $elements{'create'}{'pick_name'}{'sectionpick'} = 'selectbox';
            $elements{'modify'}{'change_mapping'}{'sectionpick'} = 'selectbox';
            $elements{'modify'}{'add_members'}{'sectionpick'} = 'selectbox';
        }
    }

    if (($action eq 'create') || 
        ($action eq 'modify' && $state eq 'pick_members')) {
        if (defined($env{'form.types'})) {
            @types=&Apache::loncommon::get_env_multiple('form.types');
        }
        if (defined($env{'form.roles'})) {
            @roles=&Apache::loncommon::get_env_multiple('form.roles');
        }
        if (defined($env{'form.sectionpick'})) {
            @sections=&Apache::loncommon::get_env_multiple('form.sectionpick');
            if (grep/^all$/,@sections) {
                @sections = sort {$a cmp $b} keys(%sectioncount);
            }
        }
    }

    if (($state eq 'pick_members') || ($state eq 'pick_privs') || ($state eq 'change_privs')) {
        &build_members_list($cdom,$cnum,\@types,\@roles,\@sections,\%users,
                            \%userdata);
    }
    if ($state eq 'pick_members') {
        if ((keys(%users) > 0) && (@tools > 0)) {
            if ($granularity eq 'Yes') {
                $elements{$action}{'pick_members'}{'togglefunc'} = 'checkbox';
            }
            foreach my $tool (@tools) {
                if ($granularity eq 'Yes') {
                    $elements{$action}{'pick_members'}{'user_'.$tool} = 'checkbox';
                }
            }
            $elements{$action}{'pick_members'}{'specificity'} = 'radio';
        }
    }
    if ($state eq 'change_members') {
        my %membership = &Apache::lonnet::get_group_membership($cdom,$cnum,
                                                               $groupname);
        my $now = time;
        my $num_expire = 0;
        my $num_activate = 0;
        my $num_reenable = 0;
        my $num_deletion = 0;
        my $numusers = 0;
        foreach my $key (sort(keys(%membership))) {
            if ($key =~ /^\Q$groupname\E:([^:]+:[^:]+)$/) {
                my $user = $1;
                my($end,$start,@userprivs) = split(/:/,$membership{$key});
                unless ($start == -1) {
                    $numusers ++;
                    $num_deletion ++;
                    if (($end > 0) && ($end < $now)) {
                        $num_reenable ++;
                        next;
                    } elsif (($start > $now)) {
                        $num_activate = 1;
                        next;
                    } else {
                        $num_expire ++;
                        next;
                    }
                    next;
                }
                if ($num_reenable && $num_activate && $num_expire) {
                    last;
                }
            }
        }
        if ($num_deletion) {
            $elements{$action}{'change_members'}{'deletion'} = 'checkbox';
        }
        if ($num_expire) {
            $elements{$action}{'change_members'}{'expire'} = 'checkbox';
        }
        if ($num_activate) {
            $elements{$action}{'change_members'}{'activate'} = 'checkbox';
        }
        if ($num_reenable) {
            $elements{$action}{'change_members'}{'reenable'} = 'checkbox';
        }
        if ($numusers) {
            if ($granularity eq 'Yes') {
                $elements{$action}{'change_members'}{'togglefunc'} = 'checkbox';
            }
            foreach my $tool (@tools) {
                if ($granularity eq 'Yes') {
                    $elements{$action}{'change_members'}{'user_'.$tool} = 'checkbox';
                }
            }
            if ($specificity eq 'Yes') {
                $elements{$action}{'change_members'}{'changepriv'} = 'checkbox';
            }
        }
    }

    if (($state eq 'pick_privs') || ($state eq 'change_privs') ||
         (($specificity eq 'No') && 
          ($state eq 'memresult' || $state eq 'result' || $state eq 'addresult'))) { 
        foreach my $tool (@tools) {
            my @values = &Apache::loncommon::get_env_multiple('form.user_'.$tool);
            foreach my $user (@values) {
                if ($state eq 'pick_privs' || $state eq 'result' 
                    || $state eq 'addresult') {
                    if (!grep(/^\Q$user\E$/,@members)) {
                        next;
                    }
                }
                unless(exists($usertools{$user}{$tool})) {
                    $usertools{$user}{$tool} = 1;
                }
            }
        }
    }

    if (($action eq 'modify') && (($state eq 'change_privs') || ($state eq 'memresult'))) {
        foreach my $chg (@member_changes) {
            if (defined($env{'form.'.$chg})) {
                @{$memchg{$chg}} = &Apache::loncommon::get_env_multiple('form.'.$chg);
            }
        }
                                                                              
        if ($state eq 'change_privs') {
            my %membership = &Apache::lonnet::get_group_membership($cdom,$cnum,
                                                                   $groupname);
            my $now = time;
            foreach my $key (sort(keys(%membership))) {
                if ($key =~ /^\Q$groupname\E:([^:]+:[^:]+)$/) {
                    my $user = $1;
                    my $changefunc = 0;
                    my ($end,$start,@userprivs) = split(/:/,$membership{$key});
                    unless ($start == -1) {
                        if (($end > 0) && ($end < $now)) {
                            unless (grep/^$user$/,$memchg{'reenable'}) {
                                next;
                            }
                        }
                        my @currtools = ();
                        if (@userprivs > 0) {
                            foreach my $tool (sort(keys(%{$fixedprivs}))) {
                                foreach my $priv (keys(%{$$fixedprivs{$tool}})) {
                                    if (grep/^$priv$/,@userprivs) {
                                        push(@currtools,$tool);
                                        last;
                                    }
                                }
                            }
                        }
                        foreach my $tool (@currtools) {
                            if (keys(%{$usertools{$user}}) > 0) {
                                if (!$usertools{$user}{$tool}) {
                                    push(@{$memchg{'changefunc'}},$user);
                                    $changefunc = 1;
                                    last;
                                }
                            } else {
                                push(@{$memchg{'changefunc'}},$user);
                                $changefunc = 1;
                            }
                        }
                        if ($changefunc) {
                            next;
                        }
                        if (keys(%{$usertools{$user}}) > 0) {
                            foreach my $tool (keys(%{$usertools{$user}})) {
                                if (!grep/^$tool$/,@currtools) {
                                    push(@{$memchg{'changefunc'}},$user);
                                    $changefunc = 1;
                                    last;
                                }
                            }
                        }
                    }
                }
            }
            &check_changes(\@member_changes,\%memchg);
            my %temptools;
            foreach my $change (@member_changes) {
                if (($change eq 'deletion') || ($change eq 'expire')) {
                    next;
                }
                foreach my $user (@{$memchg{$change}}) {
                    unless (exists($usertools{$user})) {
                        %{$usertools{$user}} = ();
                    }
                    %{$temptools{$user}} = %{$usertools{$user}}; 
                }
            }
            %usertools = %temptools;
        } elsif ($state eq 'memresult') {
            foreach my $change (@member_changes) {
                if ($change eq 'expire' || $change eq 'deletion') {
                    next;
                }
                if (ref($memchg{$change}) eq 'ARRAY') { 
                    my @users = @{$memchg{$change}};
                    foreach my $user (@users) {
                        unless (exists($usertools{$user})) {
                            %{$usertools{$user}} = ();
                        }
                    }
                }
            }
        }
    }

    if ((($state eq 'pick_privs') || ($state eq 'change_privs'))
        && ($specificity eq 'Yes')) {
        foreach my $user (sort(keys(%usertools))) {
            foreach my $tool (keys(%{$usertools{$user}})) {
                foreach my $priv (keys(%{$$toolprivs{$tool}})) {
                    unless (exists($$fixedprivs{$tool}{$priv})) {
                        $elements{$action}{$state}{'userpriv_'.$priv} = 'checkbox';
                    }
                }
            }
        }
    }

    if (($action eq 'create' && $state eq 'pick_name') || 
        ($action eq 'modify' && $state eq 'change_settings')) {
        my ($crsquota,$freespace,$maxposs) = &get_quota_constraints($action,\%stored);
        my $space_trim = '/^\s*|\s*\$/g,""';
        my $float_check = '/^([0-9]*\.?[0-9]*)$/';
        $validate_script = '
    var newquota = document.'.$state.'.quota.value;
    newquota.replace('.$space_trim.');
    if (newquota == "" ) {
        document.'.$state.'.quota.value = 0;
        newquota = 0;       
    }
    var maxposs = '.$maxposs.';
    if (newquota > maxposs) {
        alert("The file repository quota you entered for this group ("+newquota+" Mb) exceeds the maximum possible ("+maxposs+" Mb). Please enter a smaller number.");
        return;
    }
    var re_quota = '.$float_check.';
    var check_quota = newquota.match(re_quota);
    if (check_quota == null) {
        alert("The quota you entered contains invalid characters, the quota should only include numbers, with or without a decimal point.");
        return;
    }
    if (newquota == 0) {
        var warn_zero = 0;
        for (var i=0; i<document.'.$state.'.tool.length; i++) {
            if (document.'.$state.'.tool[i].value == "files") {
                if (document.'.$state.'.tool[i].checked) {
                    warn_zero = 1;
                }
            }
        }
        if (warn_zero == 1) {
            alert("You have indicated that the file repository should be enabled, but you have set the respository quota to 0 Mb.\nThis will prevent any upload of files.\nPlease set a value or disable the repository feature.");
            return;
        }
    } 
';
    }
    my $jscript = &Apache::loncommon::check_uncheck_jscript();
    $jscript .= qq|
function nextPage(formname,nextstate) {
    formname.state.value= nextstate;
    $validate_script
    formname.submit();
}
function backPage(formname,prevstate) {
    formname.state.value = prevstate;
    formname.submit();
}
function changeSort(caller) {
    document.$state.state.value = '$state';
    document.$state.sortby.value = caller;
    document.$state.submit();
} 

|;
    $jscript .= &Apache::lonhtmlcommon::set_form_elements(
                           \%{$elements{$action}{$state}},\%stored);
    my $page = 0;
    my %states = ();
    my %branchstates = ();
    @{$states{'create'}} = ('pick_name','pick_members','pick_privs','result');
    @{$states{'modify'}} = ('pick_group','pick_task');
    @{$branchstates{'noprivs'}} = ('result');
    @{$branchstates{'settings'}} = ('change_settings','chgresult');
    @{$branchstates{'members'}} = ('change_members','change_privs','memresult');
    @{$branchstates{'adds'}} = ('add_members','pick_members','pick_privs',
                                'addresult');

    if (defined($env{'form.branch'})) {
        push (@{$states{$action}},@{$branchstates{$env{'form.branch'}}});
    }

    if (($action eq 'create') || ($action eq 'modify')) {
        my $done = 0;
        my $i=0;
        while ($i<@{$states{$action}} && !$done) {
            if ($states{$action}[$i] eq $state) {
                $page = $i;
                $done = 1;
            }
            $i++;
        }
    }

    my $loaditems =  &onload_action($action,$state);
    my $crumbtitle = "$crstype $ucgpterm".'s'; 
    $r->print(&header("$crumbtitle Manager",
		      $jscript,$action,$state,$page,$loaditems));

    if ($env{'form.refpage'} eq 'enrl') {
        &Apache::lonhtmlcommon::add_breadcrumb
        ({href=>"/adm/dropadd",
          text=>"Enrollment Manager",
          faq=>9,bug=>'Instructor Interface',});
    } else {
        &Apache::lonhtmlcommon::add_breadcrumb
       ({href=>"/adm/coursegroups",
          text=>"$crumbtitle",
          faq=>9,bug=>'Instructor Interface',});
    }

    my %trail = ();
    %{$trail{'create'}} = &Apache::lonlocal::texthash (
                            pick_name => $ucgpterm.' Settings',
                            pick_members => 'Select Members',
                            pick_privs => 'Choose Privileges',
                            result => 'Creation Complete',
                          );
    %{$trail{'modify'}} = &Apache::lonlocal::texthash(
                            pick_group => $ucgpterm.'s',
                            pick_task => 'Choose Task',
                            change_settings => "$ucgpterm Settings",
                            change_members => 'Modify/Delete Members',
                            change_privs => 'Change Privileges',
                            change_mapping => 'Membership Mapping',
                            add_members => 'Add Members',
                            pick_members => 'Select Members',
                            pick_privs => 'Choose Privileges',
                            chgresult => 'Setting Changes Complete',
                            memresult => 'Modifications Complete',
                            addresult => 'Additions Complete',
                          );
    my %navbuttons = &Apache::lonlocal::texthash(
                             gtns => 'Go to next step',
                             gtps => 'Go to previous step',
                             crgr => 'Create '.$gpterm,
                             mose => 'Modify settings',
                             gtpp => 'Go to previous page',
                             adme => 'Add members',
    );
    if ((($action eq 'create') || ($action eq 'modify')) &&
              ($manage_permission)) {
        for (my $i=0; $i<@{$states{$action}}; $i++) {
            if ($state eq $states{$action}[$i]) {
                &Apache::lonhtmlcommon::add_breadcrumb(
                   {text=>"$trail{$action}{$state}"});
                $r->print(&Apache::lonhtmlcommon::breadcrumbs
			  ("$crumbtitle Manager"));
                &display_control($r,$cdom,$cnum,$action,$state,$page,
                       \%sectioncount,$groupname,$description,$functions,
                       \@tools,$toolprivs,$fixedprivs,$startdate,$enddate,
                       \%users,\%userdata,$idx,\%memchg,\%usertools,
                       $view_permission,$manage_permission,
                       \%stored,$granularity,$quota,$specificity,\@types,\@roles,
                       \@sections,\%states,\%navbuttons,$gpterm,$ucgpterm,
				 $crstype);
                last;
            } else {
                if (($state eq 'result') && ($i > 0)) {
                    &Apache::lonhtmlcommon::add_breadcrumb(
    {href=>"javascript:backPage(document.$state,'$states{$action}[0]')",
      text=>"$trail{$action}{$states{$action}[$i]}"});
                } else { 
                    &Apache::lonhtmlcommon::add_breadcrumb(
     {href=>"javascript:backPage(document.$state,'$states{$action}[$i]')",
      text=>"$trail{$action}{$states{$action}[$i]}"});
                }
            }
        }
    } elsif (($action eq 'view') && ($view_permission)) {
                        &Apache::lonhtmlcommon::add_breadcrumb(
                   {text=>"View $gpterm".'s'});
        my $crumbtitle = "$crstype $ucgpterm".'s Manager';
        $r->print(&Apache::lonhtmlcommon::breadcrumbs
		  (&mt($crumbtitle)));
        &display_groups($r,$cdom,$cnum,$functions,$idx,$view_permission,
			$manage_permission,$action,$state,$gpterm,$ucgpterm,
			$crstype);

    }
    $r->print(&footer());
    return;
}

sub retrieve_settings {
    my ($cdom,$cnum,$groupname) = @_;
    my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum,$groupname);

    return if (!%curr_groups);

    my %groupinfo = 
	&Apache::longroup::get_group_settings($curr_groups{$groupname});

    my %stored;

    $stored{'description'} = 
	&unescape($groupinfo{'description'});
    $stored{'startdate'} = $groupinfo{'startdate'};
    $stored{'enddate'} = $groupinfo{'enddate'};
    if ($stored{'enddate'} == 0) {
	$stored{'no_end_date'} = 1;
    }
    $stored{'granularity'} = $groupinfo{'granularity'};
    $stored{'specificity'} = $groupinfo{'specificity'};
    $stored{'creation'} = $groupinfo{'creation'};
    $stored{'creator'} = $groupinfo{'creator'};
    $stored{'quota'} = $groupinfo{'quota'};

    foreach my $tool (sort(keys(%{$groupinfo{'functions'}}))) {
	if ($groupinfo{functions}{$tool} eq 'on') {
	    push(@{$stored{tool}},$tool);
	}
    }
    foreach my $role (@{$groupinfo{'roles'}}) {
	push(@{$stored{roles}},$role);
    }
    foreach my $type (@{$groupinfo{'types'}}) {
	push(@{$stored{types}},$type);
    }
    foreach my $section (@{$groupinfo{'sectionpick'}}) {
	push(@{$stored{sectionpick}},$section);
    }
    foreach my $defpriv (@{$groupinfo{'defpriv'}}) {
	push(@{$stored{defpriv}},$defpriv);
    }
    $stored{'autoadd'} = $groupinfo{'autoadd'};
    $stored{'autodrop'} = $groupinfo{'autodrop'};
    if (exists($groupinfo{'autosec'})) {
	foreach my $role (sort(keys(%{$groupinfo{'autosec'}}))) {
            if (ref($groupinfo{'autosec'}{$role}) eq 'ARRAY') {
	        foreach my $section (@{$groupinfo{'autosec'}{$role}}) {
	            push (@{$stored{'sec_'.$role}},$section);
	        }
	        if (@{$groupinfo{'autosec'}{$role}} > 0) {
		    push(@{$stored{'autorole'}},$role);
	        }
            }
	}
    }
    return %stored;
}

sub display_control {
    my ($r,$cdom,$cnum,$action,$state,$page,$sectioncount,$groupname,
        $description,$functions,$tools,$toolprivs,$fixedprivs,$startdate,
        $enddate,$users,$userdata,$idx,$memchg,$usertools,
        $view_permission,$manage_permission,$stored,$granularity,$quota,
        $specificity,$types,$roles,$sections,$states,$navbuttons,
	$gpterm,$ucgpterm,$crstype) = @_;
    if ($action eq 'create') {
        if ($state eq 'pick_name') {
            &general_settings_form($r,$cdom,$cnum,$action,$state,$page,
                                   $functions,$tools,$toolprivs,$fixedprivs,
                                   $sectioncount,$stored,$states,$navbuttons,
                                   $gpterm,$ucgpterm,$crstype);
        } elsif ($state eq 'pick_members') {
            &choose_members_form($r,$cdom,$cnum,$action,$state,$page,
                                 $groupname,$description,$granularity,$quota,
                                 $startdate,$enddate,$tools,$fixedprivs,
                                 $toolprivs,$functions,$users,$userdata,$idx,
                                 $stored,$states,$navbuttons,$gpterm,$ucgpterm,
				 $crstype);
        } elsif ($state eq 'pick_privs') {
            &choose_privs_form($r,$cdom,$cnum,$action,$state,$page,
                               $startdate,$enddate,$tools,$functions,
                               $toolprivs,$fixedprivs,$userdata,$usertools,
                               $idx,$states,$stored,$sectioncount,$navbuttons,
                               $gpterm,$ucgpterm,$crstype);
        } elsif ($state eq 'result') {
            &process_request($r,$cdom,$cnum,$action,$state,$page,
                             $groupname,$description,$specificity,$userdata,
                             $startdate,$enddate,$tools,$functions,
                             $toolprivs,$usertools,$idx,$types,$roles,
                             $sections,$states,$navbuttons,$memchg,
                             $sectioncount,$stored,$gpterm,$ucgpterm,$crstype);
        }
    } elsif ($action eq 'modify') {
        my $groupname = $env{'form.groupname'};
        if ($state eq 'pick_group') {
            &display_groups($r,$cdom,$cnum,$functions,$idx,$view_permission,
			    $manage_permission,$action,$state,$gpterm,
			    $ucgpterm,$crstype);
        } elsif ($state eq 'pick_task') {
            &modify_menu($r,$groupname,$page,$gpterm);
        } elsif ($state eq 'change_settings') {
            &general_settings_form($r,$cdom,$cnum,$action,$state,$page,
                                   $functions,$tools,$toolprivs,$fixedprivs,
                                   $sectioncount,$stored,$states,$navbuttons,
                                   $gpterm,$ucgpterm,$crstype);
        } elsif ($state eq 'change_members') {
            &change_members_form($r,$cdom,$cnum,$action,$state,$page,
                                 $groupname,$description,$startdate,$enddate,
                                 $tools,$fixedprivs,$functions,$users,
                                 $userdata,$granularity,$quota,$specificity,
                                 $idx,$states,$navbuttons,$gpterm,$ucgpterm);
        } elsif ($state eq 'add_members') {
            &add_members_form($r,$action,$state,$page,$startdate,
                              $enddate,$groupname,$description,$granularity,
                              $quota,$sectioncount,$tools,$functions,$stored,
                              $states,$navbuttons,$gpterm,$ucgpterm);
        } elsif ($state eq 'pick_members') {
            &choose_members_form($r,$cdom,$cnum,$action,$state,$page,
                                 $groupname,$description,$granularity,$quota,
                                 $startdate,$enddate,$tools,$fixedprivs,
                                 $toolprivs,$functions,$users,$userdata,$idx,
                                 $stored,$states,$navbuttons,$gpterm,$ucgpterm,
				 $crstype);
        } elsif ($state eq 'pick_privs') {
            &choose_privs_form($r,$cdom,$cnum,$action,$state,$page,
                               $startdate,$enddate,$tools,$functions,
                               $toolprivs,$fixedprivs,$userdata,$usertools,
                               $idx,$states,$stored,$sectioncount,$navbuttons,
                               $gpterm,$ucgpterm,$crstype);
        } elsif ($state eq 'change_privs') {
            &change_privs_form($r,$cdom,$cnum,$action,$state,$page,
                               $startdate,$enddate,$tools,$functions,
                               $toolprivs,$fixedprivs,$userdata,$usertools,
                               $memchg,$idx,$states,$stored,$sectioncount,
                               $navbuttons,$gpterm,$ucgpterm);
        } elsif ($state eq 'chgresult' || $state eq 'memresult' || 
                 $state eq 'addresult') {
            &process_request($r,$cdom,$cnum,$action,$state,$page,
                             $groupname,$description,$specificity,$userdata,
                             $startdate,$enddate,$tools,$functions,
                             $toolprivs,$usertools,$idx,$types,$roles,
                             $sections,$states,$navbuttons,$memchg,
                             $sectioncount,$stored,$gpterm,$ucgpterm,$crstype);
        }
    }
}

sub header {
    my ($bodytitle,$jscript,$action,$state,$page,$loaditems) = @_;
    my $start_page=
	&Apache::loncommon::start_page($bodytitle,
				       '<script type="text/javascript">'.
				       $jscript.'</script>',
				       {'add_entries' => $loaditems,});
    my $output = <<"END";
$start_page
<form method="POST" name="$state">

END
    if ($action eq 'create' || $action eq 'modify') {
        $output .= <<"END";
 <input type="hidden" name="action" value="$action" />
 <input type="hidden" name="state" value="" />
 <input type="hidden" name="origin" value="$state" />
 <input type="hidden" name="page" value="$page" />
END
    }
    return $output;
}

sub onload_action {
    my ($action,$state) = @_;
    my %loaditems;
    if ((defined($env{'form.origin'})) && ($action eq 'create') &&
                ($state eq 'pick_name' || $state eq 'pick_members' || 
                 $state eq 'pick_privs')) {
        unless ($env{'form.origin'} eq '') {
	    $loaditems{'onload'} = 
		'javascript:setFormElements(document.'.$state.')';
        }
    }
    if (($action eq 'modify') &&
                ($state eq 'change_settings' || $state eq 'change_members' ||
                 $state eq 'change_privs' || $state eq 'add_members' ||
                 $state eq 'pick_members')) {
	$loaditems{'onload'} = 
	    'javascript:setFormElements(document.'.$state.')';
    }
    return \%loaditems;
}

sub footer {
    my $end_page = &Apache::loncommon::end_page();
       return(<<ENDFOOT);
   <input type="hidden" name="sortby" value="$env{'form.sortby'}" />
  </form>
$end_page
ENDFOOT
}

sub build_members_list {
    my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
    my %access = ();
    foreach my $role (@{$roles}) {
        %{$$users{$role}} = ();
    }
    foreach my $type (@{$types}) {
        $access{$type} = $type;
    }
    &Apache::loncommon::get_course_users($cdom,$cnum,\%access,$roles,
                                         $sections,$users,$userdata);
    return;
}

sub group_files {
    my ($group,$currdir,$numfiles,$numdirs) = @_;
    my $dirptr=16384;
    my @dir_list=&Apache::portfolio::get_dir_list($currdir,$group);
    foreach my $line (@dir_list) {
        my ($filename,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef)=split(/\&/,$line,16);
        if (($filename !~ /^\.\.?$/) && ($filename !~ /\.meta$/ ) && ($filename !~ /(.*)\.(\d+)\.([^\.]*)$/) && ($filename ne 'no_such_dir')) { 
            if ($dirptr&$testdir) {
                $currdir .= '/'.$filename;
                $$numdirs ++;
                &group_files($numfiles,$numdirs)
            } else {
                $$numfiles ++;
            }
        }
    }
    return;
}

sub group_members {
    my ($cdom,$cnum,$group,$group_info) = @_;
    my %memberhash = &Apache::lonnet::get_group_membership($cdom,$cnum,$group);
    my $now = time;
    my ($tmp)=keys(%memberhash);
    if ($tmp=~/^error:/) {
        $$group_info{'totalmembers'} = 'Unknown - an error occurred';
        return $tmp;
    }
    my $totalmembers = 0;
    my $active = 0;
    my $previous = 0;
    my $future = 0;
    foreach my $member (keys %memberhash) {
        $totalmembers ++;
        my ($end,$start) = split(/:/,$memberhash{$member});
        unless ($start == -1) {
            if (($end!=0) && ($end<$now)) {
                $previous ++;
            } elsif (($start!=0) && ($start>$now)) {
                $future ++;
            } else {
               $active ++;
            }
        }
    }
    if ($totalmembers == 0) {
        $$group_info{$group}{'totalmembers'} = 'None';
    } else {
        $$group_info{$group}{'totalmembers'} = '<nobr>'.$active.
            '&nbsp;-&nbsp;active</nobr><br /><nobr>'.$previous.
            '&nbsp;-&nbsp;previous</nobr><br /><nobr>'.$future.
            '&nbsp;-&nbsp;future</nobr>';
    }
    return 'ok';
}


sub general_settings_form {
    my ($r,$cdom,$cnum,$action,$formname,$page,$functions,$tools,
        $toolprivs,$fixedprivs,$sectioncount,$stored,$states,$navbuttons,
        $gpterm,$ucgpterm,$crstype) = @_;
    my ($nexttext,$prevtext);
    &groupsettings_options($r,$functions,$action,$formname,$stored,1,
                           $gpterm,$ucgpterm,$crstype);
    &access_date_settings($r,$action,$formname,$stored,2,$gpterm,$ucgpterm);
    if ($action eq 'create') {
        &membership_options($r,$action,$formname,$sectioncount,3,$gpterm,
			    $ucgpterm);
        $nexttext = $$navbuttons{'gtns'};
    } else {
        my @available = ();
        my @unavailable = ();
        &check_tools($functions,$tools,\@available,\@unavailable);
        @{$tools} = sort(keys(%{$functions}));
        &privilege_specificity($r,$action,3,$tools,$stored,$toolprivs,
			       $fixedprivs,\@available,$formname,
			       $gpterm,$ucgpterm);
        &mapping_options($r,$action,$formname,$page,$sectioncount,
                         $states,$stored,$navbuttons,4,5,
			 $gpterm,$ucgpterm,$crstype);
        $nexttext = $$navbuttons{'mose'};
    }
    $prevtext = $$navbuttons{'gtpp'};
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    return;
}

sub groupsettings_options {
    my ($r,$functions,$action,$formname,$stored,$image,$gpterm,
        $ucgpterm,$crstype) = @_;
    my %lt = &Apache::lonlocal::texthash(
        'gdat' => "$ucgpterm open and close dates",
        'sten' => "Set a start date/time and end date/time for the $gpterm",
        'gfun' => "$ucgpterm functionality",
        'gnde' => "$ucgpterm name, description and available functionality",
        'desc' => 'Description',
        'func' => 'Functionality',
        'gnam' => "$ucgpterm Name",
        'doyo' => "Do you want to assign different functionality ".
                  "to different $gpterm members?",
    );
    my ($crsquota,$freespace,$maxposs) = &get_quota_constraints($action,$stored);
    &topic_bar($r,$image,$lt{'gnde'});
    $r->print('
     <table class="LC_descriptive_input">
      <tr>
       <td class="LC_description">'.$lt{'gnam'}.':</td>
       <td colspan="5">
');
    if ($action eq 'create') {
        $r->print('<input type="text" name="groupname" size="25" />');
    } else {
        $r->print('<input type="hidden" name="groupname" value="'.
                         $env{'form.groupname'}.'" />'.$env{'form.groupname'});
    }
    $r->print(<<"END");
       </td>
      <tr>
      <tr>
       <td class="LC_description">$lt{'desc'}:</td>
       <td colspan="5"><input type="text" name="description" size="40"
                                                    value="" />
       </td>
      <tr>
      <tr>
       <td class="LC_description">$lt{'func'}:</td>
END
    my $numitems = keys(%{$functions});
    my $halfnum = int($numitems/2);
    my $remnum = $numitems%2;
    if ($remnum) {
        $halfnum ++;
    }
    my @allfunctions = sort(keys (%{$functions}));
    for (my $i=0; $i<$halfnum; $i++) {
        $r->print('<td><label><input type="checkbox" name="tool" value="'.
                  $allfunctions[$i].'" />&nbsp;'.
                   $$functions{$allfunctions[$i]}.'</label></td>
                   <td>&nbsp;</td><td>&nbsp;</td>');
    }
    $r->print('<td><input type="button" value="check all" '.
              'onclick="javascript:checkAll(document.'.$formname.'.tool)" />'.
              '</td></tr><tr><td>&nbsp;</td>');
    for (my $j=$halfnum; $j<@allfunctions; $j++) {
        $r->print('<td><label><input type="checkbox" name="tool" value="'.
                  $allfunctions[$j].'" />&nbsp;'.
                  $$functions{$allfunctions[$j]}.'</label></td>
                  <td>&nbsp;</td><td>&nbsp;</td>');
    }
    if ($remnum) {
        $r->print('<td>&nbsp;</td>');
    }
    $r->print('
       <td>
        <input type="button" value="uncheck all"
          onclick="javascript:uncheckAll(document.'.$formname.'.tool)" />
       </td>
      </tr>
      <tr>
       <td class="LC_description">'.&mt('Granularity:').'</td>
       <td colspan="10">'.$lt{'doyo'}.'&nbsp;<label><input type="radio" name="granularity" value="Yes" />'.&mt('Yes').'</label>&nbsp;<label><input type="radio" name="granularity" value="No" checked="checked" />'.&mt('No').'</label>');
    if ($action eq 'modify') {
        $r->print('&nbsp;&nbsp;('.&mt('Currently set to "[_1]"',
                                      $$stored{'granularity'}).')');
    }
    $r->print('
       </td>
      </tr>
      <tr>
       <td class="LC_description">'.&mt('Disk quota: ').'</td><td colspan="10">');
    if ($action eq 'create') {
        $r->print(&mt('If you enable the file repository for the [_1], allocate a disk quota.',$gpterm));
    } else {
        $r->print(&mt('Quota allocated to file repository:'));
    } 
    $r->print('&nbsp;<input type="text" name="quota" size="4" />Mb');
    if ($action eq 'create') {
        $r->print('<br />'.
                  &mt('A total of [_1] Mb is shared between all [_2]s in the '.
                  '[_3], and [_4] Mb are currently unallocated.',$crsquota,
                  $gpterm,lc($crstype),$freespace));
    } else {
        $r->print('&nbsp;&nbsp;('.&mt('The quota is currently [_1] Mb',
                                      $$stored{'quota'}).').');

        $r->print('<br />'.&mt('The quota can be increased to [_1] Mb, '.
                  'by adding all unallocated space for [_2]s in the [_3].',
                  $maxposs,$gpterm,lc($crstype)));
    }
    $r->print('
       </td>
      </tr>
     </table>
');
    return;
}

sub get_quota_constraints {
    my ($action,$stored) = @_;
    my ($crsquota,$freespace,$maxposs); 
    $crsquota = $env{'course.'.$env{'request.course.id'}.'.internal.coursequota'};
    if ($crsquota eq '') {
        $crsquota = 20;
    }
    $freespace = $crsquota - &Apache::longroup::sum_quotas();
    if ($action eq 'create') {
        $maxposs = $freespace;
    } else {
        $maxposs = $$stored{'quota'} + $freespace;
    }
    return ($crsquota,$freespace,$maxposs);
}

sub membership_options {
    my ($r,$action,$state,$sectioncount,$image,$gpterm,$ucgpterm) = @_;
    my $crstype = &Apache::loncommon::course_type();
    my %lt = &Apache::lonlocal::texthash(
                'pipa' => 'Pick parameters to generate membership list',
                'gmem' => "$ucgpterm membership options",
                'picr' => 'Pick the criteria to use to build a list of '.
                          lc($crstype).' users from which you will select ',
                'meof' => "members of the new $gpterm.",
                'admg' => "additional members of the $gpterm.",
                'ifno' => "If you do not wish to add members when you first ".
                          "create the $gpterm, do not make any selections.",
                'asub' => "A subsequent step will also allow you to specify automatic adding/dropping of $gpterm members triggered by specified role and section changes.",
                'acty' => 'Access types',
                'coro' => $crstype.' roles',
                'cose' => $crstype.' sections',
             );
    my %status_types = (
                   active => &mt('Currently has access'),
                   previous => &mt('Previously had access'),
                   future => &mt('Will have future access'),
                   );

    #FIXME need to plumb around for the various cr roles defined by the user
    my @roles = ('st','cc','in','ta','ep');

    my @sections = keys(%{$sectioncount});

    &topic_bar($r,$image,$lt{'pipa'});
    $r->print('
     <b>'.$lt{'gmem'}.'</b><br />'.$lt{'picr'});
    if ($action eq 'create') {
        $r->print($lt{'meof'}.'<br />'.$lt{'ifno'}.'<br />'.$lt{'asub'});
    } else {
        $r->print($lt{'admg'});
    }
    $r->print('
     <br />
     <br />
     <table class="LC_status_selector">
      <tr>
       <th>'.$lt{'acty'}.'</th>
       <th>'.$lt{'coro'}.'</th>');
    if (@sections >0) {
        $r->print('
       <th>'.$lt{'cose'}.'</th>');
    }
    $r->print('</tr><tr><td>');
    $r->print(&Apache::lonhtmlcommon::status_select_row(\%status_types));
    $r->print('</td><td>');
    $r->print(&Apache::lonhtmlcommon::role_select_row(\@roles));
    if (@sections > 0) {
        @sections = sort {$a cmp $b} @sections;
        unshift(@sections,'none'); # Put 'no sections' next
        unshift(@sections,'all'); # Put 'all' at the front of the list
        $r->print('</td><td>'.
        &sections_selection(\@sections,'sectionpick').'</td>');
    }
    $r->print('
      </tr>
     </table>');
    return;
}

sub sections_selection {
    my ($sections,$elementname) = @_;
    my $section_sel;
    my $numvisible = 4;
    if (@{$sections} < 4) {
        $numvisible = @{$sections};
    }
    foreach my $sec (@{$sections}) {
        if ($sec eq 'all') {
            $section_sel .= '  <option value="'.$sec.'" selected="selected">'.&mt('all sections').'</option>'."\n";
        } elsif ($sec eq 'none') {
            $section_sel .= '  <option value="'.$sec.'">'.&mt('no section').'</option>'."\n"; 
        } else {
            $section_sel .= '  <option value="'.$sec.'">'.$sec."</option>\n";
        }
    }
    my $output = '
        <select name="'.$elementname.'" multiple="true" size="'.$numvisible.'">
          '.$section_sel.'
        </select>';
    return $output;
}

sub access_date_settings {
    my ($r,$action,$formname,$stored,$image,$gpterm,$ucgpterm) = @_;
    my %lt = &Apache::lonlocal::texthash(
                'sten' => "Default start and end dates for $gpterm access",
             );
    my $starttime = time;
    my $endtime = time+(6*30*24*60*60); # 6 months from now, approx
    if ($action eq 'modify') {
        $starttime = $$stored{'startdate'};
        unless ($$stored{'enddate'} == 0) {
            $endtime = $$stored{'enddate'};
        }
    }
    my ($table) = &date_setting_table($starttime,$endtime,$formname);
    &topic_bar($r,$image,$lt{'sten'});
    $r->print('
    '.$table.'
    ');
    return;
}

sub choose_members_form {
    my ($r,$cdom,$cnum,$action,$formname,$page,$groupname,$description,
        $granularity,$quota,$startdate,$enddate,$tools,$fixedprivs,$toolprivs,
        $functions,$users,$userdata,$idx,$stored,$states,$navbuttons,
        $gpterm,$ucgpterm,$crstype) = @_;
    my @regexps = ('user_','userpriv_','sec_');
    my %origmembers;
    $r->print(&Apache::lonhtmlcommon::echo_form_input(
         ['origin','action','state','page','member','specificity','branch',
          'defpriv','autorole','autoadd','autodrop','sortby','togglefunc'],
         \@regexps));
    my $earlyout = &validate_groupname($groupname,$action,$cdom,$cnum,$gpterm,
                                       $ucgpterm,$crstype);
    if ($earlyout) {
	$r->print($earlyout);
        &display_navbuttons($r,$formname,$$states{$action}[$page-1],
                           $$navbuttons{'gtps'});
        return;
    } 
    my ($specimg,$memimg);
    my @available = ();
    my @unavailable = ();
    &check_tools($functions,$tools,\@available,\@unavailable);
    if ($action eq 'create') {
        &print_current_settings($r,$action,$functions,$startdate,$enddate,
				$groupname,$description,$granularity,$quota,
				\@available,\@unavailable,$gpterm,$ucgpterm);
        $specimg = 4;
        $memimg = 5;
    } else {
        $specimg = 2;
        $memimg = 3;
        my %membership = &Apache::lonnet::get_group_membership($cdom,$cnum,
                                                               $groupname);
        foreach my $key (sort(keys(%membership))) {
            if ($key =~ /^\Q$groupname\E:([^:]+):([^:]+)$/) {
                my ($end,$start,@userprivs) = split(/:/,$membership{$key});
                unless ($start == -1) {  
                    my $uname = $1;
                    my $udom = $2;
                    my $user = $uname.':'.$udom;
                    $origmembers{$user} = 1; 
                }
            }
        }
    }
    &privilege_specificity($r,$action,$specimg,$tools,$stored,$toolprivs,
                          $fixedprivs,\@available,$formname,$gpterm,$ucgpterm);
    my $newusers = &pick_new_members($r,$action,$formname,\@available,$idx,
				     $stored,$memimg,$users,$userdata,
				     $granularity,\%origmembers,$gpterm,
				     $ucgpterm);
    if ($newusers || $action eq 'create') {
        &display_navbuttons($r,$formname,$$states{$action}[$page-1],
                            $$navbuttons{'gtps'},$$states{$action}[$page+1],
                            $$navbuttons{'gtns'});
    } else {
        &display_navbuttons($r,$formname,$$states{$action}[$page-1],
                            $$navbuttons{'gtps'});
    }
    return;
}

sub display_navbuttons {
    my ($r,$formname,$prev,$prevtext,$next,$nexttext) = @_;
    $r->print('<div class="LC_navbuttons">');
    if ($prev) {
        $r->print('
      <input type="button" name="previous" value = "'.$prevtext.'"
    onclick="javascript:backPage(document.'.$formname.','."'".$prev."'".')"/>
   &nbsp;&nbsp;&nbsp;');
    }
    if ($next) {
        $r->print('
      <input type="button" name="next" value="'.$nexttext.'"
 onclick="javascript:nextPage(document.'.$formname.','."'".$next."'".')" />');
    }
    $r->print('</div>');
}

sub check_tools {
    my ($functions,$tools,$available,$unavailable) = @_;
    foreach my $item (sort(keys(%{$functions}))) {
        if (grep/^$item$/,@{$tools}) {
            push(@{$available},$item);
        } else {
            push(@{$unavailable},$item);
        }
    }
    return;
}

sub print_current_settings {
    my ($r,$action,$functions,$startdate,$enddate,$groupname,$description,
	$granularity,$quota,$available,$unavailable,$gpterm,$ucgpterm) = @_;

    my %lt = &Apache::lonlocal::texthash(
        grna => "$ucgpterm Name",
        desc => 'Description',
        grfn => "$ucgpterm Functions",
        gran => 'Granularity',
        quot => 'File quota',
        dfac => 'Default access dates',
        ygrs => "Your $gpterm selections",
        tfwa => "The following settings will apply to the $gpterm:",
        difn => 'Different functionality<br />for different members:',
        stda => 'Start date',
        enda => 'End date:',
    );
    my $showstart = &Apache::lonlocal::locallocaltime($startdate);
    my $showend;
    if ($enddate == 0) {
        $showend = &mt('No end date set'); 
    } else {
        $showend = &Apache::lonlocal::locallocaltime($enddate);
    }
    if ($action eq 'create') {
        $r->print('
<div><span style="font-size: larger">'.$lt{'ygrs'}.'</span>
<br />'.$lt{'tfwa'}.'
</div>');
    }
    $r->print(&Apache::loncommon::start_data_table('LC_course_group_status').
	      &Apache::loncommon::start_data_table_header_row());
    $r->print('
  <th>'.$lt{'grna'}.'</th>
  <th>'.$lt{'desc'}.'</th>
  <th>'.$lt{'grfn'}.'</th>
  <th>'.$lt{'gran'}.'</th>
  <th>'.$lt{'quot'}.'</th>
  <th>'.$lt{'dfac'}.'</th>
');
    $r->print(&Apache::loncommon::end_data_table_header_row().
	      &Apache::loncommon::start_data_table_row('LC_data_table_dense'));
    $r->print('
  <td valign="top">'.$groupname.'</td>
  <td valign="top">'.$description.'</td>
  <td>
');
    if (@{$available} > 0) {
        $r->print('<b>Available:</b>
                    <table class="LC_group_priv"><tr>');
        my $rowcell = int(@{$available}/2) + @{$available}%2;
        for (my $i=0; $i<@{$available}; $i++) {
            if (@{$available} > 3) {
                if ($i==$rowcell) {
                    $r->print('</tr><tr>');
                }
            }
            $r->print('<td>'.$$functions{$$available[$i]}.
		      '</td><td>&nbsp;</td>');
        }
        if ((@{$available} > 3) && (@{$available}%2)) {
            $r->print('<td>&nbsp;</td><td>&nbsp;</td>');
        }
        $r->print('</tr></table><br />');
    }
    if (@{$unavailable} > 0) {
        $r->print('<b>Unavailable:</b>
                    <table class="LC_group_priv"><tr>');
        my $rowcell = int(@{$unavailable}/2) + @{$unavailable}%2;
        for (my $j=0; $j<@{$unavailable}; $j++) {
            if (@{$unavailable} > 3) {
                if ($j==$rowcell) {
                    $r->print('</tr><tr>');
                }
            }
            $r->print('<td>'.$$functions{$$unavailable[$j]}.
		      '</td><td>&nbsp;</td>');
        }
        if ((@{$unavailable} > 3) && (@{$unavailable}%2)) {
            $r->print('<td>&nbsp;</td><td>&nbsp;</td>');
        }
        $r->print('</tr></table>');
    }
    $r->print(<<"END");
  </td>
  <td valign="top"><b>$lt{'difn'}</b> $granularity</td>
  <td valign="top">$quota Mb</td> 
  <td valign="top"><b>$lt{'stda'}</b> $showstart<br />
      <b>$lt{'enda'}</b> $showend
  </td>
END
    $r->print(&Apache::loncommon::end_data_table_row().
	      &Apache::loncommon::end_data_table());
    return;
}

sub pick_new_members {
    my ($r,$action,$formname,$available,$idx,$stored,$img,$users,$userdata,
	$granularity,$origmembers,$gpterm,$ucgpterm) = @_;
    my %lt = &Apache::lonlocal::texthash(
          'gpme' => "$ucgpterm membership",
          'addm' => 'Add members',
          'setf' => 'Set functionality',
          'func' => 'Functionality',
          'nome' => 'No members to add at this time.',
          'nnew' => "There are no users to add as new members, as all users".
                    " matching the specified type(s), role(s), and/or ".
                    "section(s) are already affiliated with this $gpterm.",
          'yoma' =>  'You may need to use the '."'".'modify existing, past or '.
                     'future members'."'".' page if you need to re-enable '.
                     'or activate access for previous or future members.',
    );
    my %members;
    my $totalusers = 0;
    my $newusers = 0;
    foreach my $role (keys(%{$users})) {
        foreach my $user (keys(%{$$users{$role}})) {
            $totalusers ++;
            if (ref($origmembers) eq 'HASH') {
                if (exists($$origmembers{$user})) {
                    next;
                }
            }    
            unless (defined($members{$user})) {
                @{$members{$user}} = @{$$userdata{$user}};
                $newusers ++;
            }
        }
    }
    if (keys(%members) > 0) {
        if (@{$available} > 0 && $granularity eq 'Yes') {
            $r->print(&check_uncheck_tools($r,$available));
        }
    }
    &topic_bar($r,$img,$lt{'gpme'});
    if (keys(%members) > 0) {
        $r->print('
    <table>
     <tr>');
        &check_uncheck_buttons($r,$formname,'member',$lt{'addm'});
        if (@{$available} > 0 && $granularity eq 'Yes') {
            $r->print('<td>
     <fieldset><legend><b>'.$lt{'setf'}.'</b></legend>
      <nobr>
      <input type="button" value="check all"
        onclick="javascript:checkAllTools(document.'.$formname.')" />
        &nbsp;&nbsp;
      <input type="button" value="uncheck all"
        onclick="javascript:uncheckAllTools(document.'.$formname.')" />
      </nobr>
     </fieldset></td>');
        }
        $r->print('</tr></table>
        ');
        $r->print(&Apache::loncommon::start_data_table().
		  &Apache::loncommon::start_data_table_header_row());
        $r->print('
     <th>'.&mt('Add?').'</b></td>
     <th><a href="javascript:changeSort('."'fullname'".')">'.&mt('Name').'</a></td>
     <th><a href="javascript:changeSort('."'username'".')">'.&mt('Username').'</a></td>
     <th><a href="javascript:changeSort('."'domain'".')">'.&mt('Domain').'</a></td>
     <th><a href="javascript:changeSort('."'id'".')">'.&mt('ID').'</a></td>
     <th><a href="javascript:changeSort('."'section'".')">'.&mt('Section').'</a></td>
');
        if (@{$available} > 0) {
            $r->print('<th>'.$lt{'func'}.'</th>');
        }
        $r->print(&Apache::loncommon::end_data_table_header_row());
        if (@{$available} > 0) {
            if ($granularity eq 'Yes') {
                $r->print(&Apache::loncommon::start_data_table_row('LC_data_table_dense LC_data_table_highlight').'
 <td colspan="6">&nbsp;</td>
 <td align="center"><nobr><b>'.&mt('All:').'</b>&nbsp;');
                foreach my $tool (@{$available}) {
                    $r->print('<label><input type="checkbox" name="togglefunc" '.
   'onclick="javascript:toggleTools(document.'.$formname.'.user_'.$tool.',this);"'.
   ' value="'.$tool.'">'.'<b>'.$tool.'</b></label>&nbsp;&nbsp;&nbsp;');
                }
                $r->print('</nobr></td></tr>');
            }
        }
        my %Sortby = ();
        foreach my $user (sort(keys(%members))) {
            if ($env{'form.sortby'} eq 'fullname') {
                push(@{$Sortby{$members{$user}[$$idx{fullname}]}},$user);
            } elsif ($env{'form.sortby'} eq 'username') {
                push(@{$Sortby{$members{$user}[$$idx{uname}]}},$user);
            } elsif ($env{'form.sortby'} eq 'domain') {
                push(@{$Sortby{$members{$user}[$$idx{udom}]}},$user);
            } elsif ($env{'form.sortby'} eq 'id') {
                push(@{$Sortby{$members{$user}[$$idx{id}]}},$user);
            } elsif ($env{'form.sortby'} eq 'section') {
                push(@{$Sortby{$members{$user}[$$idx{section}]}},$user);
            } else {
                push(@{$Sortby{$members{$user}[$$idx{fullname}]}},$user);
            }
        }
        foreach my $key (sort(keys(%Sortby))) {
            foreach my $user (@{$Sortby{$key}}) {
                my $id = $members{$user}[$$idx{id}];
                my $fullname = $members{$user}[$$idx{fullname}];
                my $udom = $members{$user}[$$idx{udom}];
                my $uname = $members{$user}[$$idx{uname}];
                my $section = $members{$user}[$$idx{section}];
                $r->print(&Apache::loncommon::start_data_table_row('LC_data_table_dense').
			  '<td align="right"><input type="checkbox" name="member" value="'.$user.'" /></td>'.
			  '<td>'.$fullname.'</td>'.
			  '<td>'.$uname.'</td>'.
			  '<td>'.$udom.'</td>'.
			  '<td>'.$id.'</td>'.
			  '<td>'.$section.'</td>');
                if (@{$available} > 0) {
                    $r->print('<td align="center"><nobr>'.
                              '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;');
                    foreach my $tool (@{$available}) {
                        if ($granularity eq 'Yes') {
                            $r->print('<input type="checkbox" name="user_'.
                          $tool.'" value="'.$user.'" />'.$tool.'&nbsp;&nbsp;&nbsp;');
                        } else {
                            $r->print('<input type="hidden" name="user_'.
                          $tool.'" value="'.$user.'" />'.$tool.'&nbsp;&nbsp;&nbsp;');
                        }
                    }
                    $r->print('</nobr></td>');
                }
                $r->print(&Apache::loncommon::end_data_table_row()."\n");
            }
        }
        $r->print(&Apache::loncommon::end_data_table());
    } else {
        if ($totalusers > 0) {
            $r->print($lt{'nnew'}.'<br /><br />'.$lt{'yoma'});
        } else { 
            $r->print($lt{'nome'});
        }
    }
    return $newusers;
}

sub privilege_specificity {
    my ($r,$action,$img,$tools,$stored,$toolprivs,$fixedprivs,$available,
	$formname,$gpterm,$ucgpterm) = @_;
    my %lt = &Apache::lonlocal::texthash (
      'uprv' => 'User privileges',
      'frty' => 'For each type of functionality you have chosen to include, '.
                'there is a set of standard privileges which apply to all '.
                'of those for whom the functionality is enabled.',
      'thar' => 'There are also additional privileges which can be set for '.
                'some, or all, members. Please choose one of the following:',
      'fort' => 'For the types of functionality you have chosen to include '.
                'there are no additional privileges which can be set for some '.
                'or all members.',
      'eaty' => 'Each of the types of functionality includes standard '.
                'privileges which apply to members with access to that '.
                'functionality, and may also include additional privileges '.
                'which can be set for specific members.',
      'cutg' => "Currently the $gpterm is configured ",
      'sdif' => "so different $gpterm members can receive different privileges.",
      'sall' => "so all $gpterm members will receive the same privileges.",
      'algm' => "All $gpterm members will receive the same privileges.",
      'smgp' => "Some $gpterm members will receive different privileges from ".
                "others.",
      'thwi' => "These will be the privileges all $gpterm members receive, ". 
                "if you selected the first option above.",
      'thes' => "These will be the privileges given to members assigned ".   
                "in the future, including via automatic $gpterm assignment ".
                "for specific sections/roles ",
      'asyo' => "As you have chosen not to include any functionality in the ".
                "$gpterm, no default user privileges settings need to be set.",
      'plin' => 'Please indicate which <b>optional</b> privileges members '.
                'will receive by default.',
      'oppr' => 'Optional privileges',
      'defp' => 'The default privileges new members will receive are:', 
    );
    my $totaloptionalprivs = 0;
    foreach my $tool (@{$tools}) {
        foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
            if (!exists($$fixedprivs{$tool}{$priv})) {
                $totaloptionalprivs ++;
            }
        }
    }
    &topic_bar($r,$img,$lt{'uprv'});
    if ((($action eq 'create') && (@{$available} > 0)) || 
        (($action eq 'modify') && ($formname eq 'change_settings'))) {  
        my %specific = (
                      'No'  => 'checked="checked"',
                      'Yes' => '',
                  );
        if ($action eq 'create') {
            $r->print($lt{'frty'}.'<br />');
            if ($totaloptionalprivs) {
                $r->print($lt{'thar'});
            } else {
                $r->print($lt{'fort'});
            }
        } else {
            $r->print($lt{'eaty'}.'&nbsp;'.$lt{cutg});
            if ($$stored{'specificity'} eq 'Yes') {
                $r->print($lt{'sdif'});
                $specific{'Yes'} = $specific{'No'};
                $specific{'No'} = '';
            } else {
                $r->print($lt{'sall'});
            }
        }
        if ($totaloptionalprivs) {
            $r->print('
<br /><br />
<label><nobr><input type="radio" name="specificity" value="No" '.$specific{'No'}.' />&nbsp;'.$lt{'algm'}.'</nobr></label><br />
<label><nobr><input type="radio" name="specificity" value="Yes" '.$specific{'Yes'}.' />&nbsp;'.$lt{'smgp'}.'</nobr></label>');
        } else {
            $r->print('<input type="hidden" name="specificity" value="No" />');
        }
        if ($totaloptionalprivs) {
            $r->print($lt{'plin'});
            if ($action eq 'create') {
                $r->print(' '.$lt{'thwi'});
            }
            $r->print('<br />'.$lt{'thes'});
            if ($action eq 'create') {
                $r->print('('.&mt('if enabled on the next page').').');
            } else {
                $r->print('('.&mt('if enabled below').').');
            }
            $r->print('<br /><br />
  <table><tr>');
        &check_uncheck_buttons($r,$formname,'defpriv',$lt{'oppr'});
        $r->print('
    </tr>
   </table>
   <br />
');
        } else {
            $r->print($lt{'algm'}.'<br /><br />');
        }
        &default_privileges($r,$action,$tools,$toolprivs,$fixedprivs,
			    $available);
    } else {
        if ($action eq 'create') {
            $r->print($lt{'asyo'});
        } elsif ($action eq 'modify' && $formname eq 'pick_members') {
            my @defprivs;
            if (ref($$stored{'defpriv'}) eq 'ARRAY') {
                @defprivs = @{$$stored{'defpriv'}};
            }
            $r->print($lt{'eaty'}.'&nbsp;'.$lt{cutg});
            if ($$stored{'specificity'} eq 'Yes') {
                $r->print($lt{'sdif'});
            } else {
                $r->print($lt{'sall'});
            }
            $r->print(' '.$lt{'defp'}.'<br /><br />');
            &display_defprivs($r,$tools,$toolprivs,\@defprivs);
        }
    }
    return;
}

sub default_privileges {
    my ($r,$action,$tools,$toolprivs,$fixedprivs,$available) = @_;
    my %lt = &Apache::lonlocal::texthash(
                                'addp' => 'Additional privileges',
                                'fixp' => 'Fixed privileges',
                                'oppr' => 'Optional privileges',
                                'func' => 'Function',
    );
    $r->print(&Apache::lonhtmlcommon::start_pick_box('LC_group_priv_box').
	      &Apache::lonhtmlcommon::row_title($lt{'func'},undef,
						'LC_groups_functionality'));
    $r->print(join('</td><td class="LC_groups_functionality">',@{$tools}));
    $r->print(&Apache::lonhtmlcommon::row_closure(1));
    my $fixed = '';
    my $dynamic = '';
    foreach my $tool (@{$tools}) {
        my $privcount = 0;
	if ($dynamic ne '') {
	    $dynamic .= '</td><td class="LC_groups_optional">';
	}
	$dynamic .= '<table class="LC_group_priv"><tr>';
        foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
            if (exists($$fixedprivs{$tool}{$priv})) {
		if ($fixed ne '') {
		    $fixed .= '</td><td class="LC_groups_fixed">';
		}
                $fixed .= '<input type="hidden" name="defpriv" value="'.$priv.'" />'.$$toolprivs{$tool}{$priv}.'&nbsp;';
                if ($action eq 'modify') {
                    if (grep(/^$tool$/,@{$available})) {
                        $fixed .= '<small>'.&mt('(on)').'<small>&nbsp;';
                    } else {
                        $fixed .= '<small>'.&mt('(off)').'<small>&nbsp;';
                    }
                }
            } else {
                $privcount++;
                if ($privcount == 3) {
                    $dynamic .= '</tr>
                                 <tr>'."\n";
                }
                $dynamic .= '<td><label><input type="checkbox" name="defpriv" value="'.$priv.'" />'.$$toolprivs{$tool}{$priv}.'</label></td>'."\n";
            }
        }
        if ($privcount == 0) {
            $dynamic .= '<td>None</td>'."\n";
        }
        if ($privcount < 3) {
            $dynamic .= '</td>
                         <td>&nbsp;</td>'."\n";
        } elsif ($privcount%2) {
            $dynamic = '<td>&nbsp;</td>'."\n";
        }
	$dynamic .= '</tr></table>';
    }
    $r->print(&Apache::lonhtmlcommon::row_title($lt{'fixp'},undef,
						'LC_groups_fixed').
	      $fixed.
	      &Apache::lonhtmlcommon::row_closure(1));
    $r->print(&Apache::lonhtmlcommon::row_title($lt{'oppr'},undef,
						'LC_groups_optional').
	      $dynamic.
	      &Apache::lonhtmlcommon::end_pick_box());
    $r->print('<br />');
    return;

}

sub display_defprivs {
    my ($r,$tools,$toolprivs,$defprivs) = @_;
    my $function = &Apache::loncommon::get_users_function();
    my $tabcol = &Apache::loncommon::designparm($function.'.tabbg');
    my $rowColor1 = "#dddddd";
    my $rowColor2 = "#eeeeee";
    my %lt = &Apache::lonlocal::texthash(
                                'priv' => 'Privileges',
                                'func' => 'Function',
    );
    $r->print(&Apache::lonhtmlcommon::start_pick_box());
    $r->print('<tr>');
    my $numrows = 0;
    my %currprivs;
    foreach my $tool (@{$tools}) {
        @{$currprivs{$tool}} = ();
        foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
            if (ref($defprivs) eq 'ARRAY') {
                if (grep(/^\Q$priv\E$/,@{$defprivs})) {
                    push(@{$currprivs{$tool}},$priv);
                }
            }
        }
        my $rowcount = int(@{$currprivs{$tool}}/3);
        if (@{$currprivs{$tool}}%3 > 0) {
            $rowcount ++;
        }
        if ($rowcount > $numrows) {
            $numrows = $rowcount;
        }
    }
    my @rowCols = ($rowColor1,$rowColor2);
    foreach my $tool (@{$tools}) {
        $r->print('<td align="center" valign="top">
                    <table cellspacing="0" cellpadding="5">
                     <tr bgcolor="#cccccc">
                      <td colspan="3" align="center"><b>'.$tool.'</b></td>
                     </tr>
        ');
        my $rownum = 1;
        my $privcount = 0;
        $r->print('<tr bgcolor="'.$rowColor1.'">');
        foreach my $priv (@{$currprivs{$tool}}) {
            $privcount ++;
            if ($privcount%4 == 0) {
                $rownum ++;
                my $bgcol = $rownum%2; 
                $r->print('</tr>
                             <tr bgcolor="'.$rowCols[$bgcol].'">'."\n");
            }
            $r->print('<td>'.$$toolprivs{$tool}{$priv}.'</td>'."\n");
        }
        if ($privcount%3 > 0) {
            my $emptycells = 3-($privcount%3);
            while($emptycells > 0) {
                $r->print('<td>&nbsp;</td>'."\n");
                $emptycells --;
            }
        }
        while ($rownum < $numrows) {
            $rownum ++;
            my $bgcol = $rownum%2;
            $r->print('<tr bgcolor="'.$rowCols[$bgcol].'"><td colspan="3">&nbsp;</td></tr>');
        }
        $r->print('</table>'."\n".'</td>');
    }
    $r->print('</tr>'."\n");
    $r->print(&Apache::lonhtmlcommon::end_pick_box());
    $r->print('<br />');
    return;
}


sub change_members_form {
    my ($r,$cdom,$cnum,$action,$formname,$page,$groupname,$description,
        $startdate,$enddate,$tools,$fixedprivs,$functions,$users,$userdata,
        $granularity,$quota,$specificity,$idx,$states,$navbuttons,$gpterm,
	$ucgpterm) = @_;
    my %lt = &Apache::lonlocal::texthash(
                                         grse => "$ucgpterm settings",
                                         mogm => "Modify $gpterm membership",
                                        );
    my @regexps = ('user_','userpriv_');
    $r->print(&Apache::lonhtmlcommon::echo_form_input(
                         ['origin','action','state','page','expire','deletion',
                          'reenable','activate','changepriv','sortby',
                          'togglefunc'],\@regexps));
    my $rowimg = 1;
    my @available = ();
    my @unavailable = ();
    &check_tools($functions,$tools,\@available,\@unavailable);
    my $nexttext = $$navbuttons{'gtns'};
    my $prevtext = $$navbuttons{'gtpp'};
    $r->print('
<br />
');
    &topic_bar($r,1,$lt{'grse'});
    &print_current_settings($r,$action,$functions,$startdate,$enddate,
			    $groupname,$description,$granularity,$quota,
			    \@available,\@unavailable,$gpterm,$ucgpterm);
    &topic_bar($r,2,$lt{'mogm'});
    &current_membership($r,$cdom,$cnum,$formname,$groupname,\@available,
			\@unavailable,$fixedprivs,$granularity,$specificity);
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    return;
}

sub current_membership {
    my ($r,$cdom,$cnum,$formname,$groupname,$available,$unavailable,
	$fixedprivs,$granularity,$specificity) = @_;
    my %membership = &Apache::lonnet::get_group_membership($cdom,$cnum,
                                                                   $groupname);
    my %lt = &Apache::lonlocal::texthash(
                                          'actn' => 'Action?',
                                          'name' => 'Name',
                                          'usnm' => 'Username',
                                          'doma' => 'Domain',
                                          'stda' => 'Start Date',
                                          'enda' => 'End Date',
                                          'expi' => 'Expire',
                                          'reen' => 'Re-enable',
                                          'acti' => 'Activate',
                                          'dele' => 'Delete',
                                          'curf' => 'Current Functionality',
                                          'chpr' => 'Change Privileges' 
                                        );
    my ($current,$hastools,$addtools,$num_reenable,$num_activate,$num_expire) =
        &Apache::longroup::group_memberlist($cdom,$cnum,$groupname,$fixedprivs,
                                            $available);
    if (keys(%{$current}) > 0) {
        $r->print('
   <table>
    <tr>');
        if ($num_expire) {
            &check_uncheck_buttons($r,$formname,'expire',$lt{'expi'});
        }
        if ($num_reenable) {
            &check_uncheck_buttons($r,$formname,'reenable',$lt{'reen'});
        }
        if ($num_activate) {
            &check_uncheck_buttons($r,$formname,'activate',$lt{'acti'});
        }
        &check_uncheck_buttons($r,$formname,'deletion',$lt{'dele'});
        if (@{$available} > 0) {
            if ($specificity eq 'Yes') {
                &check_uncheck_buttons($r,$formname,'changepriv',$lt{'chpr'});
            }
            if ($granularity eq 'Yes') {
                $r->print(&check_uncheck_tools($r,$available));
                $r->print('
     <td>
      <nobr>
       <fieldset><legend><b>'.$lt{'curf'}.'</b></legend>
       <input type="button" value="check all"
       onclick="javascript:checkAllTools(document.'.$formname.')" />
       &nbsp;&nbsp;
       <input type="button" value="uncheck all"
        onclick="javascript:uncheckAllTools(document.'.$formname.')" />
      </fieldset>
     </nobr>
    </td>
');
            }
        }
        $r->print(<<"END");
   </tr>
  </table>
  <br />
END
        $r->print(&Apache::loncommon::start_data_table().
		  &Apache::loncommon::start_data_table_header_row());
        $r->print(<<"END");
     <th>$lt{'actn'}</th>
     <th><a href="javascript:changeSort('fullname')">$lt{'name'}</a></th>
     <th><a href="javascript:changeSort('username')">$lt{'usnm'}</a></th>
     <th><a href="javascript:changeSort('domain')">$lt{'doma'}</a></th>
     <th><a href="javascript:changeSort('id')">ID</a></th>
     <th><a href="javascript:changeSort('start')">$lt{'stda'}</a></th>
     <th><a href="javascript:changeSort('end')">$lt{'enda'}</a></th>
END
        my $colspan = 0;
        if ($hastools) {
            $r->print('<th>'.$lt{'curf'}.'</th>');
            $colspan++;  
        }
        if ($addtools) {
            $r->print('<th>'.&mt('Additional Functionality').'</th>');
            $colspan++;
        }
        $r->print(&Apache::loncommon::end_data_table_header_row());
        if ($colspan) {
            if ($granularity eq 'Yes') {
                $r->print(&Apache::loncommon::start_data_table_row('LC_data_table_dense LC_data_table_highlight').'
 <td colspan="7">&nbsp;</td>
 <td colspan="'.$colspan.'" align="center"><nobr><b>'.&mt('All:').
  '</b>&nbsp;');
                foreach my $tool (@{$available}) {
                    $r->print('<label><input type="checkbox" name="togglefunc"'.
   ' onclick="javascript:toggleTools(document.'.$formname.'.user_'.$tool.',this);"'.
   ' value="'.$tool.'" />'.'<b>'.$tool.'</b></label>&nbsp;&nbsp;&nbsp;');
                }
                $r->print('</nobr></td></tr>');
            }
        }
        my %Sortby = ();
        foreach my $user (sort(keys(%{$current}))) {
            if ($env{'form.sortby'} eq 'fullname') {
                push(@{$Sortby{$$current{$user}{fullname}}},$user);
            } elsif ($env{'form.sortby'} eq 'username') {
                push(@{$Sortby{$$current{$user}{uname}}},$user);
            } elsif ($env{'form.sortby'} eq 'domain') {
                push(@{$Sortby{$$current{$user}{udom}}},$user);
            } elsif ($env{'form.sortby'} eq 'id') {
                push(@{$Sortby{$$current{$user}{id}}},$user);
            } else {
                push(@{$Sortby{$$current{$user}{fullname}}},$user);
            }
        }
        foreach my $key (sort(keys(%Sortby))) {
            foreach my $user (@{$Sortby{$key}}) {
                my $id = $$current{$user}{id};
                my $fullname = $$current{$user}{fullname};
                my $udom = $$current{$user}{udom};
                my $uname = $$current{$user}{uname};
                my $start = $$current{$user}{start};
                my $end = $$current{$user}{end};
                $r->print(&Apache::loncommon::start_data_table_row('LC_data_table_dense').'
                            <td>');
                if ($$current{$user}{changestate} eq 'reenable') {
                    $r->print('<nobr><label>'. 
   '<input type="checkbox" name="reenable" value="'.$user.'" />'.
   $lt{'reen'}.'</label></nobr><br />');
                } elsif ($$current{$user}{changestate} eq 'expire') {
                    $r->print('<nobr><label>'.
   '<input type="checkbox" name="expire" value="'.$user.'" />'.
   $lt{'expi'}.'</label></nobr><br />');
                } elsif ($$current{$user}{changestate} eq 'activate') {
                    $r->print('<nobr><label>'.
   '<input type="checkbox" name="activate" value="'.$user.'" />'.
   $lt{'acti'}.'</label></nobr><br />');
                }
                $r->print('<nobr><label>'.
   '<input type="checkbox" name="deletion" value="'.$user.'" />'.
   $lt{'dele'}.'</label></nobr>');
                if ($specificity eq 'Yes') {
                    $r->print('<br /><nobr><label>'.
   '<input type="checkbox" name="changepriv" value="'.$user.'" />'.$lt{'chpr'}.
   '</label></nobr>');
                }
                $r->print('
   </td>'.
   '<td>'.$fullname.'</td>'.
   '<td>'.$uname.'</td>'.
   '<td>'. $udom.'</td>'.
   '<td>'.$id.'</td>'.
   '<td>'.$start.'</td>'.
   '<td>'.$end.'</td>');
                if ($hastools) {
                    $r->print('<td align="left"><nobr>'.
                                  '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;');
                    foreach my $tool (@{$$current{$user}{currtools}}) {
                        if ($granularity eq 'Yes') {
                            $r->print('<label><input type="checkbox" '. 
                                       'checked="checked" '. 
                                       'name="user_'.$tool.'" value="'.
                                       $user.'" />'.$tool.'</label>');
                         } else {
                             $r->print('<input type="hidden" '.
                                       'checked="checked" '.
                                       'name="user_'.$tool.'" value="'.
                                       $user.'" />'.$tool);
                         }
                         $r->print('&nbsp;&nbsp;&nbsp;');
                    }
                    $r->print('</nobr></td>');
                }
                if ($addtools) {
                    $r->print('<td align="left">');
                    if ($granularity eq 'Yes') {
                        foreach my $tool (@{$$current{$user}{newtools}}) {
                            $r->print('<nobr><label><input type="checkbox"
                                          name="user_'.$tool.'" value="'.
                                          $user.'" />'.$tool.
                                          '</label></nobr>&nbsp;&nbsp;&nbsp;');
                        }
                    } else {
                        foreach my $tool (@{$$current{$user}{newtools}}) {
                            $r->print('<nobr><input type="hidden" 
                                          name="user_'. $tool.'" value="'.
                                          $user.'" />'.$tool.
                                          '</nobr>&nbsp;&nbsp;&nbsp;');
                        }
                    }
                    $r->print('</td>');
                }
                $r->print(&Apache::loncommon::end_data_table_row()."\n");
            }
        }
        $r->print(&Apache::loncommon::end_data_table());
    }
    return;
}

sub check_uncheck_buttons {
    my ($r,$formname,$field,$title,$colspan) = @_;
    $r->print('
     <td '.$colspan.'>
       <fieldset>
       <legend><b>'.$title.'</b></legend>
      <nobr>
       <input type="button" value="check all"
       onclick="javascript:checkAll(document.'.$formname.'.'.$field.')" />
       &nbsp;&nbsp;
       <input type="button" value="uncheck all"
       onclick="javascript:uncheckAll(document.'.$formname.'.'.$field.')" />
      </nobr>
       </fieldset>
     </td>
');
}


sub change_privs_form {
    my ($r,$cdom,$cnum,$action,$formname,$page,$startdate,$enddate,
	$tools,$functions,$toolprivs,$fixedprivs,$userdata,$usertools,
	$memchg,$idx,$states,$stored,$sectioncount,$navbuttons,$gpterm,
	$ucgpterm) = @_;
    my @regexps = ('userpriv_');
    my $nexttext;
    my %lt = &Apache::lonlocal::texthash(
               'tode' => 'To be deleted',
               'toex' => 'To be expired',
               'nome' => "No members to be deleted or expired from the $gpterm.",
    );
    $r->print(&Apache::lonhtmlcommon::echo_form_input(
         ['origin','action','state','page','sortby'],\@regexps));
    if ($env{'form.branch'} eq 'adds') {
        $nexttext = $$navbuttons{'adme'};
    } else {
        $nexttext = $$navbuttons{'mose'};
    }
    &topic_bar($r,3,&mt('Members to delete or expire'));
    my $exp_or_del = 0;
    if (ref($$memchg{'deletion'}) eq 'ARRAY') {
        if (@{$$memchg{'deletion'}} > 0) {
            $r->print('<tr><td>&nbsp;</td><td colspan="3"><b>'.$lt{'tode'}.':</b><br /><ul>');
            foreach my $user (@{$$memchg{'deletion'}}) {
                $r->print('<li>'.$$userdata{$user}[$$idx{fullname}].
                          '&nbsp;('.$user.')</li>');
            }
            $r->print('</ul>');
            $exp_or_del += @{$$memchg{'deletion'}};
        }
    }
    if (ref($$memchg{'expire'}) eq 'ARRAY') {
        if (@{$$memchg{'expire'}} > 0) {
            $r->print('<tr><td>&nbsp;</td><td colspan="3"><b>'.$lt{'toex'}.':</b><br /><ul>');
            foreach my $user (@{$$memchg{'expire'}}) {
                $r->print('<li>'.$$userdata{$user}[$$idx{fullname}].
                          '&nbsp;('.$user.')</li>');
            }
            $r->print('</ul>');
            $exp_or_del += @{$$memchg{'expire'}};
        }
    }
    if (!$exp_or_del) {
        $r->print($lt{'nome'}.'<br />');
    }
    
    &topic_bar($r,4,&mt('[_1] member privileges',$ucgpterm));

    my $numchgs = &member_privileges_form($r,$action,$formname,$tools,
                                          $toolprivs,$fixedprivs,$userdata,
                                          $usertools,$idx,$memchg,$states,
                                          $stored,$gpterm);
    my $prevtext = $$navbuttons{'gtps'};
    if ($numchgs || $exp_or_del) {
        &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                            $$states{$action}[$page+1],$nexttext);
    } else {
        &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext);
    }
    return;
}

sub add_members_form {
    my ($r,$action,$formname,$page,$startdate,$enddate,$groupname,
        $description,$granularity,$quota,$sectioncount,$tools,$functions,
        $stored,$states,$navbuttons,$gpterm,$ucgpterm)=@_; 
    $r->print(' <br />');
    my @available = ();
    my @unavailable = ();
    &check_tools($functions,$tools,\@available,\@unavailable);
    &print_current_settings($r,$action,$functions,$startdate,$enddate,
			    $groupname,$description,$granularity,$quota,
			    \@available,\@unavailable,$gpterm,$ucgpterm);
    &membership_options($r,$action,$formname,$sectioncount,1,$gpterm,$ucgpterm);
    my $nexttext = $$navbuttons{'gtns'};
    my $prevtext = $$navbuttons{'gtpp'};
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    return;
}

sub choose_privs_form {
    my ($r,$cdom,$cnum,$action,$formname,$page,$startdate,$enddate,
	$tools,$functions,$toolprivs,$fixedprivs,$userdata,$usertools,$idx,
	$states,$stored,$sectioncount,$navbuttons,$gpterm,$ucgpterm,
	$crstype) = @_;

    my @regexps = ('userpriv_');
    my $nexttext;
    
    if ($action eq 'create') {
        push(@regexps,'sec_');
        $r->print(&Apache::lonhtmlcommon::echo_form_input(
         ['origin','action','state','page','sortby','autoadd','autodrop'],
         \@regexps));
        $nexttext = $$navbuttons{'crgr'};
    } else {
        $r->print(&Apache::lonhtmlcommon::echo_form_input(
         ['origin','action','state','page','sortby'],\@regexps));
        $nexttext = $$navbuttons{'adme'};
    }

    &topic_bar($r,6,&mt('[_1] member privileges',$ucgpterm));

    &member_privileges_form($r,$action,$formname,$tools,$toolprivs,
                            $fixedprivs,$userdata,$usertools,$idx,undef,
                            $states,$stored,$gpterm);

    if ($action eq 'create') {
        if (keys(%{$sectioncount}) > 0) {
            my $img1 = 7;
            my $img2 = 8;
            &mapping_options($r,$action,$formname,$page,$sectioncount,
                             $states,$stored,$navbuttons,$img1,$img2,
                             $gpterm,$ucgpterm,$crstype);
        }
    }
    my $prevtext = $$navbuttons{'gtps'};
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    return;
}

sub build_boxes {
    my ($r,$tools,$usertools,$fixedprivs,$toolprivs,$showtools,
        $showboxes,$prefix,$specificity,$excluded) = @_;
    my $totalboxes = 0;
    if (@{$tools} > 0) {
        if ($specificity eq 'Yes') {
            foreach my $tool (@{$tools}) {
                @{$$showboxes{$tool}} = ();
                foreach my $user (sort(keys(%{$usertools}))) {
                    if (ref($excluded) eq 'ARRAY') {
                        if (grep/^$user$/,@{$excluded}) {
                            next;
                        }
                    }
                    if ($$usertools{$user}{$tool}) {
                        unless (grep/^$tool$/,@{$showtools}) {
                            push(@{$showtools},$tool);
                        }
                        foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
                            unless (exists($$fixedprivs{$tool}{$priv})) {
                                unless(grep(/^$priv$/,@{$$showboxes{$tool}})) {
                                    push(@{$$showboxes{$tool}},$priv);
                                    $totalboxes ++;
                                }
                            }
                        }
                    }
                }
            }
            if ($totalboxes > 0) {
                $r->print('
<script type="text/javascript">
function checkAllTools(formname) {
');
                foreach my $tool (sort(keys(%{$showboxes}))) {
                    foreach my $priv (@{$$showboxes{$tool}}) {
                        $r->print('  checkAll(formname.'.$prefix.$priv.');'."\n");
                    }
                }
                $r->print('
}
function uncheckAllTools(formname) {
');
                foreach my $tool (sort(keys(%{$showboxes}))) {
                    foreach my $priv (@{$$showboxes{$tool}}) {
                        $r->print('  uncheckAll(formname'.$prefix.$priv.');'."\n");
                    }
                }
                $r->print('
}
</script>
                ');
            }
        }
    }
    return $totalboxes;
}

sub member_privileges_form {
    my ($r,$action,$formname,$tools,$toolprivs,$fixedprivs,$userdata,
        $usertools,$idx,$memchg,$states,$stored,$gpterm) = @_;
    my %lt = &Apache::lonlocal::texthash(
            'addp' => 'Additional privileges',
            'fixp' => 'Fixed privileges',
            'oppr' => 'Optional privileges',
            'func' => 'Function',
            'forf' => 'For the functionality you have chosen to include '.
                      'there are no optional privileges to set besides '.
                      'the standard privileges.',
            'algr' => "All $gpterm members will receive the same privileges.",
            'asno' => "As no $gpterm members are being added, ".
                      "there are no specific user privileges to set.",
            'asng' => "As no $gpterm tools will be made available to users, ".
                      "there are no specific user privileges to set.",
            'nogm' => "No $gpterm member privileges to display or set, ".
                      "as you have not indicated that you will be activating,".
                      " re-enabling, changing privileges, or adding/removing ".
                      "functionality for any current members ",
            'full' => 'Fullname',
            'user' => 'Username',
            'doma' => 'Domain',
    );
    my @defprivs;
    my $specificity;
    if ($action eq 'create') {
        if (defined($env{'form.defpriv'})) {
            @defprivs = &Apache::loncommon::get_env_multiple('form.defpriv');
        }
        $specificity = $env{'form.specificity'};
    } else {
        if (defined($$stored{'defpriv'})) {
            @defprivs = @{$$stored{'defpriv'}};
        }
        $specificity = $$stored{'specificity'};
    }
    my @showtools;
    my %showboxes = ();
    my $numtools = 1 + @{$tools};

    my @excluded = ();
    my $numchgs = 0;
    if ($formname eq 'change_privs') {
        my @currmembers = ();
        if (ref($$memchg{'deletion'}) eq 'ARRAY') {
            push(@excluded,@{$$memchg{'deletion'}});
        }
        if (ref($$memchg{'expire'}) eq 'ARRAY') {
            push(@excluded,@{$$memchg{'expire'}});
        }
        if (@excluded > 0) {
            foreach my $user (sort(keys(%{$usertools}))) {
                if (grep/^$user$/,@excluded) {
                    next;
                }
                push(@currmembers,$user);
            }
        } else {
            @currmembers = sort(keys(%{$usertools}));
        }
        $numchgs = @currmembers;
        if (!$numchgs) {
            $r->print($lt{'nogm'}); 
            return $numchgs;
        }
    }
 
    my $totalboxes = &build_boxes($r,$tools,$usertools,$fixedprivs,
                                   $toolprivs,\@showtools,\%showboxes,
                                   'userpriv_',$specificity,\@excluded);
    if (@{$tools} > 0) {
        if ($specificity eq 'Yes') {
            if ($totalboxes > 0) {
                my $numcells = 2;
                my $colspan = $numcells + 1;
                my %total;
                if (keys(%{$usertools}) > 1) {
                    $r->print('
   <table border="0" cellspacing="2" cellpadding="2">
    <tr>
');
                    foreach my $tool (@{$tools}) {
                        if (@{$showboxes{$tool}} > 0) {
                            $r->print('<td valign="top">');
                            $r->print('<table class="thinborder"><tr>'.
				      '<th colspan="'.$colspan.'">'.
                                      $tool.'</th></tr><tr>');
                            my $privcount = 0;
                            foreach my $priv (@{$showboxes{$tool}}) {
                                $privcount ++;
                                if (($privcount == @{$showboxes{$tool}}) && 
                                    ($privcount > 1)) {
                                    if ($privcount%$numcells) {
                                        $r->print('<td colspan="'.$colspan.'">');
                                    } else {
                                        $r->print('<td>');
                                    }
                                } else {
                                    $r->print('<td>');
                                }
                                $r->print(qq|
       <fieldset><legend><b>$$toolprivs{$tool}{$priv}</b></legend>
       <nobr>
       <input type="button" value="check all"
         onclick="javascript:checkAll(document.$formname.userpriv_$priv)" />
       &nbsp;
       <input type="button" value="uncheck all"
        onclick="javascript:uncheckAll(document.$formname.userpriv_$priv)" />
      </nobr></fieldset><br />|);
                                $r->print('</td>');
                                if ($privcount < @{$showboxes{$tool}}) {
                                    if (@{$showboxes{$tool}} > 2) {
                                        if ($privcount%$numcells == 0) {
                                            $r->print('</tr><tr>');
                                        }
                                    } else {
                                        $r->print('<tr></tr>');
                                    }
                                }
                            }
                            $r->print('</tr></table></td><td>&nbsp;</td>');
                        }
                    }
                    $r->print('</tr></table>');
                }
                $r->print(&Apache::loncommon::start_data_table().
			  &Apache::loncommon::start_data_table_header_row());
                $r->print(<<"END");
    <th>$lt{'full'}</th>
    <th>$lt{'user'}</th>
    <th>$lt{'doma'}</th>
    <th colspan="$numtools">$lt{'addp'}</th>
END
                $r->print(&Apache::loncommon::end_data_table_header_row());
                &member_privs_entries($r,$usertools,$toolprivs,$fixedprivs,
                                      $userdata,$idx,\@showtools,\@defprivs,
                                      \@excluded);
                $r->print(&Apache::loncommon::end_data_table());
            } else {
                $r->print($lt{'forf'}.'<br />');
                &display_defprivs($r,$tools,$toolprivs,\@defprivs);
            }
        } else {
            if (keys(%{$usertools}) > 0) {
                $r->print($lt{'algr'}.'<br /><br />');
                &display_defprivs($r,$tools,$toolprivs,\@defprivs);
            } else {
                $r->print($lt{'asno'}.'<br />');
            }
        }
    } else {
        $r->print($lt{'asng'});
    }
    return $numchgs;
}

sub process_request {
    my ($r,$cdom,$cnum,$action,$state,$page,$groupname,$description,
        $specificity,$userdata,$startdate,$enddate,$tools,$functions,$toolprivs,
        $usertools,$idx,$types,$roles,$sections,$states,$navbuttons,$memchg,
        $sectioncount,$stored,$gpterm,$ucgpterm,$crstype) = @_;

    $r->print(&Apache::lonhtmlcommon::echo_form_input(
                                 ['origin','action','state','page','sortby']));

    my $earlyout = &validate_groupname($groupname,$action,$cdom,$cnum,$gpterm,
                                       $ucgpterm,$crstype);
    if ($earlyout) {
        $r->print('
<table width="100%" cellpadding="0" cellspacing="0" border="0">
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
'.$earlyout.'</td></tr>');
        &display_navbuttons($r,$state,$$states{$action}[$page-1],
                            $$navbuttons{'gtps'});
        $r->print('</table>');
        return;
    }

    my @defprivs = ();
    if ($action eq 'create' || $state eq 'chgresult') { 
        if (defined($env{'form.defpriv'})) {
            @defprivs = &Apache::loncommon::get_env_multiple('form.defpriv');
        }
        if ($state eq 'chgresult') {
            my @okprivs = ();
            foreach my $tool (@{$tools}) {
                foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
                    push(@okprivs,$priv);
                }
            }
            my @temp = ();
            foreach my $defpriv (@defprivs) {
                if (grep/^$defpriv$/,@okprivs) {
                    push(@temp,$defpriv);
                }
            }
            @defprivs = @temp; 
        }
    } else {
        if (defined($$stored{'defpriv'})) {
            @defprivs = @{$$stored{'defpriv'}};
        }
    }

    my $outcome;
    if ($action eq 'create' || $state eq 'chgresult') {
        $outcome = &write_group_data($r,$cdom,$cnum,$action,$state,$groupname,
                                     $description,$startdate,$enddate,
                                     $specificity,$functions,$tools,
                                     $sectioncount,$roles,$types,$sections,
                                     \@defprivs,$stored,$gpterm,$ucgpterm,
                                     $crstype); 
    }
    if (($action eq 'create' && $outcome eq 'ok') || (($action eq 'modify') && 
       (($state eq 'memresult') || ($state eq 'addresult')))) {
        &process_membership($r,$cdom,$cnum,$action,$state,$groupname,$tools,
                            $enddate,$startdate,$userdata,$idx,$toolprivs,
                            $usertools,$specificity,\@defprivs,$memchg,$gpterm,
                            $ucgpterm);
    }
    return;
}

sub write_group_data {
    my ($r,$cdom,$cnum,$action,$state,$groupname,$description,$startdate,
        $enddate,$specificity,$functions,$tools,$sectioncount,$roles,$types,
        $sections,$defprivs,$stored,$gpterm,$ucgpterm,$crstype) = @_;
    my $now = time;
    my $creation = $now;
    my $creator = $env{'user.name'}.':'.$env{'user.domain'};
    if ($state eq 'chgresult') {
        $creation = $$stored{'creation'};
        $creator = $$stored{'creator'};
    }
    my $esc_description = &escape($description);
    my @single_attributes = ('description','functions','startdate','enddate',
                             'creation','modified','creator','granularity',
                             'specificity','autoadd','autodrop','quota');
    my @mult_attributes = ('roles','types','sectionpick','defpriv');

    my ($crsquota,$freespace,$maxposs) = &get_quota_constraints($action,
                                                                $stored);
    my $quota = $env{'form.quota'};
    
    $quota =~ s/^\s*([^\s]*)\s*$/$1/;
    if ($quota eq '') {
        $quota = 0;
    }
    if ($quota !~ /^\d*\.?\d*$/) {
        $quota = 0;
        $r->print(&mt('The value you entered for the quota for the file repository in this [_1] contained invalid characters, so it has been set to 0 Mb. You can change this by modifying the [_1] settings.<br />',$gpterm));
    }
    if ($quota > $maxposs) {
        $quota = $maxposs;
        $r->print(&mt('The value you entered for the quota for the file repository in this [_1] exceeded the maximum possible value, so it has been set to [_2] Mb (the maximum possible value).<br />',$gpterm,$maxposs));
    }
    my %groupinfo = (
                     description => $esc_description,
                     startdate => $startdate,
                     enddate => $enddate,
                     creation => $creation,
                     modified => $now,
                     creator => $creator,
                     granularity => $env{'form.granularity'},
                     specificity => $specificity,
                     autoadd => $env{'form.autoadd'},
                     autodrop => $env{'form.autodrop'},
                     quota => $quota,
                   );

    foreach my $func (keys(%{$functions})) {
        my $status;
        if (grep(/^$func$/,@{$tools})) {
            $status = 'on';
        } else {
            $status = 'off';
        }
        $groupinfo{'functions'} .=  qq|<name id="$func">$status</name>|;
    }

    $groupinfo{'roles'} = $roles;
    $groupinfo{'types'} = $types;
    $groupinfo{'sectionpick'} = $sections;
    $groupinfo{'defpriv'} = $defprivs;

    my %groupsettings = ();
    foreach my $item (@single_attributes) {
        $groupsettings{$groupname} .= qq|<$item>$groupinfo{$item}</$item>|;
    }
    foreach my $item (@mult_attributes) {
        foreach my $entry (@{$groupinfo{$item}}) {
            $groupsettings{$groupname} .= qq|<$item>$entry</$item>|;
        }
    }
    my $autosec;
    my @autorole = &Apache::loncommon::get_env_multiple('form.autorole');

    foreach my $role (@autorole) {
        if (defined($env{'form.sec_'.$role})) {
            my @autosections=&Apache::loncommon::get_env_multiple('form.sec_'.
                                                                  $role);
            $autosec .= '<role id="'.$role.'">';
            foreach my $sec (@autosections) {
                $autosec .= '<section>'.$sec.'</section>';
            }
            $autosec .= '</role>';
        }
    }
    if ($autosec) {
        $groupsettings{$groupname} .= qq|<autosec>$autosec</autosec>|;
    }
    my $result = &Apache::lonnet::modify_coursegroup($cdom,$cnum,
                                                     \%groupsettings);

    if ($result eq 'ok') {
        if ($action eq 'create') {
            my $result = &add_group_folder($cdom,$cnum,$now,$groupname,$action,
                                           $description,$tools,\%groupinfo,
                                           $gpterm,$ucgpterm,$crstype);
            if ($result ne 'ok') {
                $r->print(&mt('A problem occurred when creating folders for the new [_1]. [_2].<br />',$gpterm,$result));
            }
            $r->print(&mt('[_1] [_2] was created.<br />',$ucgpterm,$groupname));
        } else {
            $r->print(&mt('[_1] [_2] was updated.<br />',$ucgpterm,$groupname));
        }
    } else {
        my %actiontype = (
                          'create' => 'creating',
                          'modify' => 'modifying',
                         );
        &Apache::lonnet::logthis("Failed to store $gpterm $groupname ".
                                 'in '.lc($crstype).': '.$cnum.
                                 ' in domain: '.$cdom);
        $r->print(&mt('An error occurred when [_1] the [_2]. '.
                      'Please try again.',$actiontype{$action},$gpterm));
    }
    return $result;
}

sub process_membership {
    my ($r,$cdom,$cnum,$action,$state,$groupname,$tools,$enddate,$startdate,
        $userdata,$idx,$toolprivs,$usertools,$specificity,$defprivs,$memchg,
        $gpterm,$ucgpterm)=@_;
    my %usersettings = ();
    my %added= ();
    my %failed = ();
    my $num_ok = 0;
    my $num_fail = 0;
    my %group_privs = ();
    my %curr_privs = ();
    my %curr_start = ();
    my %curr_end = ();
    my %tooltype = ();

    foreach my $tool (@{$tools}) {
        foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
            $tooltype{$priv} = $tool;
            if ($specificity eq 'Yes') {
                my @users =
                  &Apache::loncommon::get_env_multiple('form.userpriv_'.$priv);
                foreach my $user (@users) {
                    $group_privs{$user} .= $priv.':';
                    if ($state eq 'memresult') { 
                        unless (exists($$usertools{$user}{$tool})) {
                            $$usertools{$user}{$tool} = 1;
                        }
                    }
                }
            } else {
                if (@{$defprivs} > 0) {
                    if (grep/^\Q$priv\E$/,@{$defprivs}) {
                        foreach my $user (sort(keys(%{$usertools}))) {
                            if ($$usertools{$user}{$tool}) {
                                $group_privs{$user} .= $priv.':';
                            }
                        }
                    }
                }
            }
        }
    }
    foreach my $user (keys(%group_privs)) {
        $group_privs{$user} =~ s/:$//;
    }

    my $now = time;
    my @activate = ();
    my @expire = ();
    my @deletion = ();
    my @reenable = ();
    my @unchanged = ();
    if ($state eq 'memresult') {
        if (ref($$memchg{'activate'}) eq 'ARRAY') {
            @activate = @{$$memchg{'activate'}};
        }
        if (ref($$memchg{'expire'}) eq 'ARRAY') {
            @expire = @{$$memchg{'expire'}};
        }
        if (ref($$memchg{'deletion'}) eq 'ARRAY') {
            @deletion = @{$$memchg{'deletion'}};
        }
        if (ref($$memchg{'reenable'}) eq 'ARRAY') {
            @reenable = @{$$memchg{'reenable'}};
        }
        my %membership = &Apache::lonnet::get_group_membership($cdom,$cnum,
                                                                 $groupname);
        foreach my $key (sort(keys(%membership))) {
            if ($key =~ /^\Q$groupname\E:([^:]+:[^:]+)$/) {
                ($curr_end{$1},$curr_start{$1},$curr_privs{$1}) = 
                                                split(/:/,$membership{$key},3);
            }
        }
        if (@expire + @deletion > 0) {
            foreach my $user (@expire) {
                my $savestart = $curr_start{$user};
                if ($savestart > $now) {
                    $savestart = $now;
                }
                $usersettings{$groupname.':'.$user} = $now.':'.$savestart.':'.
                                                      $curr_privs{$user};
                if (&Apache::lonnet::modify_group_roles($cdom,$cnum,$groupname,
                                                       $user,$now,$savestart,
                                                       $curr_privs{$user}) eq 'ok') {
                    push(@{$added{'expired'}},$user);
                    $num_ok ++;
                } else {
                    push(@{$failed{'expired'}},$user);
                    $num_fail ++;
                }
            }
            foreach my $user (@deletion) {
                $usersettings{$groupname.':'.$user} = $now.':-1:';
                if (&Apache::lonnet::modify_group_roles($cdom,$cnum,$groupname,
                                                       $user,$now,'-1','')
                                                         eq 'ok') {
                    push(@{$added{'deleted'}},$user);
                    $num_ok ++;
                } else {
                    push(@{$failed{'deleted'}},$user);
                    $num_fail ++;
                }
            }
        }
    }

    foreach my $user (sort(keys(%{$usertools}))) {
        if ((grep(/^$user$/,@expire)) || (grep(/^$user$/,@deletion))) {
            next;
        }
        my $type;
        my $start = $startdate;
        my $end = $enddate;
        if ($state eq 'memresult') {
            if (@activate > 0) {
                if (grep/^$user$/,@activate) {
                    $start = $now;
                    $end = $enddate;
                    $type = 'activated';
                }
            }
            if (@reenable > 0) {
                if (grep/^$user$/,@reenable) {
                    $start = $startdate;
                    $end = $enddate;
                    $type = 'reenabled';
                }
            }
            if ($type eq '') {
                if ($curr_privs{$user} eq $group_privs{$user}) {
                    push(@unchanged,$user);
                    next;
                }
                if (exists($curr_start{$user})) {
                    $start = $curr_start{$user};
                }
                if (exists($curr_end{$user})) {
                    $end = $curr_end{$user};
                }
                $type = 'modified';
            }
        } else {
            $type = 'added';
        }
        $usersettings{$groupname.':'.$user} = $end.':'.$start.':'.
                                              $group_privs{$user};
        if (&Apache::lonnet::modify_group_roles($cdom,$cnum,$groupname,
                                                $user,$end,$start,
                                                $group_privs{$user}) eq 'ok') {
            push(@{$added{$type}},$user);
            $num_ok ++;
        } else {
            push(@{$failed{$type}},$user);
            $num_fail ++;
        }
    }
    my $roster_result = &Apache::lonnet::modify_coursegroup_membership($cdom,
                                                       $cnum,\%usersettings);
    if ($num_ok) {
        foreach my $type (sort(keys(%added))) { 
            $r->print(&mt('The following users were successfully [_1]',$type));
            if (!($type eq 'deleted' || $type eq 'expired')) {   
                $r->print(&mt(' with the following privileges'));
            }
            $r->print(':<br />');
            foreach my $user (@{$added{$type}}) {
                my $privlist = '';
                if (!($type eq 'deleted' ||  $type eq 'expired')) {
                    $privlist = ': ';
                    my @privs = split(/:/,$group_privs{$user});
                    my $curr_tool = '';
                    foreach my $priv (@privs) {
                        unless ($curr_tool eq $tooltype{$priv}) {
                            $curr_tool = $tooltype{$priv};
                            $privlist .= '<b>'.$curr_tool.'</b>: ';
                        }
                        $privlist .= $$toolprivs{$curr_tool}{$priv}.', ';
                    }
                    $privlist =~ s/, $//;
                }
                $r->print($$userdata{$user}[$$idx{fullname}].'&nbsp;-&nbsp;'.$user.$privlist.'<br />');
            }
            $r->print('<br />');
        }
    }
    if ($num_fail) {
        foreach my $type (sort(keys(%failed))) {
            $r->print(&mt('The following users could not be [_1], because an error occurred:<br />',$type));
            foreach my $user (@{$failed{$type}}) {
                $r->print($$userdata{$user}[$$idx{fullname}].' - '.$user.'<br />');
            }
        }
        $r->print('<br />');
    }
    if (@unchanged > 0) {
        $r->print(&mt('No change occurred for the following users:<br />'));
        foreach my $user (sort(@unchanged)) {
            $r->print($$userdata{$user}[$$idx{fullname}].' - '.$user.'<br />');
        }
        $r->print('<br />');
    }
    if ($roster_result eq 'ok') {
        $r->print('<br />'.&mt('[_1] membership list updated.',$ucgpterm));
	$r->print('<p>'.&mt("For full access to all of [_1]'s privileges, users will need to log out and log back in.",$groupname).'</p>');
    } else {
        $r->print('<br />'.&mt('An error occurred while updating the [_1] membership list -',$gpterm).$roster_result.'<br />');
    }
    return;
}

sub mapping_options {
    my ($r,$action,$formname,$page,$sectioncount,$states,$stored,
        $navbuttons,$img1,$img2,$gpterm,$ucgpterm,$crstype) = @_;
    my %lt = &Apache::lonlocal::texthash(
        'auto' => "Settings for automatic $gpterm enrollment",
        'gmma' => "$ucgpterm membership mapping to specific sections/roles",
        'endi' => "Enable/disable automatic $gpterm enrollment for ".
                          "users in specified roles and sections",
        'adds'  => "If automatic $gpterm enrollment is enabled, when a user is assigned a ".lc($crstype)."-wide or section-specific role, he/she will automatically be added as a member of the $gpterm, with start and end access dates defined by the default dates set for the $gpterm, unless he/she is already a $gpterm member, with access dates that permit either current or future $gpterm access.",
        'drops'  => "If automatic $gpterm disenrollment is enabled, when a user's role is expired, access to the $gpterm will be terminated unless the user continues to have other ".lc($crstype)."-wide or section-specific active or future roles which receive automatic membership in the $gpterm.",
        'pirs' => "Pick roles and sections for automatic $gpterm enrollment",
        'curr' => 'Currently set to',
        'on' => 'on',
        'off' => 'off',
        'auad' => "Automatically enable $gpterm membership when roles are added?",
        'auex' => "Automatically expire $gpterm membership when roles are removed?",
        'mapr' => "Mapping of roles and sections affected by automatic $gpterm enrollment/disenrollment follows scheme chosen below.",
    );
    &automapping($r,$action,$stored,\%lt,$img1);
    &mapping_settings($r,$sectioncount,\%lt,$stored,$img2,$crstype);
    return;
}

sub automapping {
    my ($r,$action,$stored,$lt,$image) = @_;
    my $add = 'off';
    my $drop = 'off';
    if (exists($$stored{'autoadd'})) {
        $add = $$stored{'autoadd'};
    }
    if (exists($$stored{'autodrop'})) {
        $drop = $$stored{'autodrop'};
    }
    &topic_bar($r,$image,$$lt{'endi'});
    $r->print('
    <b>'.$$lt{'gmma'}.':</b><br />'.$$lt{'adds'}.'<br />'.$$lt{'drops'}.'<br /><br />
   <nobr>'.$$lt{'auad'}.':&nbsp;
    <label><input type="radio" name="autoadd" value="on" />on&nbsp;&nbsp;</label><label><input type="radio" name="autoadd" value="off" checked="checked" />off</label>');
    if ($action eq 'modify') {
        $r->print('&nbsp;&nbsp;&nbsp;&nbsp;('.$$lt{'curr'}.' <b>'.$$lt{$add}.'</b>)');
    }
    $r->print('
    </nobr><br />
    <nobr>'.$$lt{'auex'}.':&nbsp;
    <label><input type="radio" name="autodrop" value="on" />on&nbsp;&nbsp;</label><label><input type="radio" name="autodrop" value="off" checked="checked" />off</label>');
    if ($action eq 'modify') {
        $r->print('&nbsp;&nbsp;&nbsp;&nbsp;('.$$lt{'curr'}.' <b>'.$$lt{$drop}.'</b>)');
    }
    $r->print('</nobr><br /><br />'.$$lt{'mapr'});
}

sub mapping_settings {
    my ($r,$sectioncount,$lt,$stored,$image,$crstype) = @_;
    my @sections = keys(%{$sectioncount});
    if (@sections > 0) {
        @sections = sort {$a cmp $b} @sections;
        unshift(@sections,'none'); # Put 'no sections' next
        unshift(@sections,'all'); # Put 'all' at the front of the list
    }
    &topic_bar($r,$image,$$lt{'pirs'});
    my @roles = &standard_roles();
    my %customroles = &my_custom_roles();
    $r->print(&Apache::loncommon::start_data_table().
	      &Apache::loncommon::start_data_table_header_row());
    $r->print('
                 <th>'.&mt('Active?').'</th>
                 <th>'.&mt('Role').'</th>');
    if (@sections > 0) {
        $r->print('<th>'.&mt('Sections').'</th>');
    }
    $r->print(&Apache::loncommon::end_data_table_header_row()."\n");
    foreach my $role (@roles) {
        my $plrole=&Apache::lonnet::plaintext($role,$crstype);
        my $sections_sel;
        if (@sections > 0) {
            if ($role eq 'cc') {
                $sections_sel = '<td align="right">'.
                                &mt('all sections').'<input type="hidden" '. 
                                'name="sec_cc" value="all" /></td>';
            } else { 
                $sections_sel='<td align="right">'.
                              &sections_selection(\@sections,'sec_'.$role).
                              '</td>';
            }
        }
        $r->print(&Apache::loncommon::start_data_table_row().
		  '<td><input type="checkbox" '.
                  'name="autorole" value="'.$role.'" /></td><td>'.$plrole.
                  '</td>'.$sections_sel.
		  &Apache::loncommon::end_data_table_row());
    }
    foreach my $role (sort(keys(%customroles))) {
        my $sections_sel;
        if (@sections > 0) {
            $sections_sel = 
		'<td>'.&sections_selection(\@sections,'sec_'.$role).'</td>';
        }
        $r->print(&Apache::loncommon::start_data_table_row().
		  '<td><input type="checkbox" '.
                  'value="'.$role.'" /></td><td>'.$role.'</td>'.
                  $sections_sel.
		  &Apache::loncommon::end_data_table_row());
    }
    $r->print(&Apache::loncommon::end_data_table());
    return;
}

sub standard_roles {
    my @roles = ('cc','in','ta','ep','st');
    return @roles;
}

sub my_custom_roles {
    my %returnhash=();
    my %rolehash=&Apache::lonnet::dump('roles');
    foreach (keys %rolehash) {
        if ($_=~/^rolesdef\_(\w+)$/) {
            $returnhash{$1}=$1;
        }
    }
    return %returnhash;
}

sub modify_menu {
    my ($r,$groupname,$page,$gpterm) = @_;
    my @menu =
        (
          { text => "Modify default $gpterm settings",
            help => 'Course_Modify_Group',
            state => 'change_settings',
            branch => 'settings',
            },
          { text => 'Modify access, tools and/or privileges for previous, '.
                    'future, or current members',
            help => 'Course_Modify_Group_Membership',
            state => 'change_members',
            branch => 'members',
            },
          { text => "Add member(s) to the $gpterm",
            help => 'Course_Group_Add_Members',
            state => 'add_members',
            branch => 'adds',
            },
          );
    my $menu_html = '';
    foreach my $menu_item (@menu) {
        $menu_html .=
        '<p><font size="+1"><a href="/adm/coursegroups?action=modify&refpage='.$env{'form.refpage'}.'&groupname='.$groupname.'&state='.$menu_item->{'state'}.'&branch='.$menu_item->{'branch'}.'">';
        $menu_html.= &mt($menu_item->{'text'}).'</a></font>';
        if (exists($menu_item->{'help'})) {
            $menu_html.=
                &Apache::loncommon::help_open_topic($menu_item->{'help'});
        }
        $menu_html.='</p>'.$/;
    }
    $r->print($menu_html);
    return;
}

sub member_privs_entries {
    my ($r,$usertools,$toolprivs,$fixedprivs,$userdata,$idx,$showtools,
	$defprivs,$excluded) = @_;
    foreach my $user (sort(keys(%{$usertools}))) {
        if (defined($excluded)) {
            if (ref($excluded) eq 'ARRAY') {
                if (grep/^$user$/,@{$excluded}) {
                    next;
                }
            }
        }
        my ($uname,$udom) = split(/:/,$user);
        $r->print(&Apache::loncommon::start_data_table_row().'
                <td>'.$$userdata{$user}[$$idx{fullname}].'</td>
                <td>'.$uname.'</td>
                <td>'.$udom.'</td>
                <td valign="top"><table><tr><td><b>Function</b></td></tr><tr><td><b>Fixed</b></td></tr><tr><td><b>Optional</b></td></tr></table></td>');
        foreach my $tool (@{$showtools}) {
            if (exists($$usertools{$user}{$tool})) {
                $r->print('<td valign="top"><table><tr><th colspan="2">'.$tool.'</th></tr>');
                my $privcount = 0;
                my $fixed = '';
                my $dynamic = '';
                foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
                    if (exists($$fixedprivs{$tool}{$priv})) {
                        $fixed .= '<input type="hidden" name="userpriv_'.$priv.'" value="'.$user.'" />'.$$toolprivs{$tool}{$priv}.'&nbsp;';
                    } else {
                        $privcount ++;
                        if ($privcount == 3) {
                            $dynamic .= '</tr><tr>';
                        }
                        $dynamic .='<td><nobr><label><input type="checkbox" '.
                               'name="userpriv_'.$priv.'" value="'.$user.'"';
                        if (grep/^\Q$priv\E$/,@{$defprivs}) {
                            $dynamic .= ' checked="checked" ';
                        }
                        $dynamic .= ' />'.$$toolprivs{$tool}{$priv}.
                                    '</label></nobr></td>';
                    }
                }
                $r->print('<tr><td colspan="2"><nobr>'.$fixed.'</nobr></td></tr><tr>'.$dynamic.'</tr></table></td>');
            } else {
                $r->print('<td valign="top"><table width="100%"><tr><th colspan="2">'.$tool.'</th></tr><tr><td>&nbsp;</td></tr><tr><td>&nbsp;</td></tr></table></td>');
            }
        }
        $r->print(&Apache::loncommon::end_data_table_row());
    }
}

sub get_dates_from_form {
    my $startdate;
    my $enddate;
    $startdate = &Apache::lonhtmlcommon::get_date_from_form('startdate');
    $enddate   = &Apache::lonhtmlcommon::get_date_from_form('enddate');
    if ( exists ($env{'form.no_end_date'}) ) {
        $enddate = 0;
    }
    return ($startdate,$enddate);
}

sub date_setting_table {
    my ($starttime,$endtime,$formname) = @_;
    my $startform = &Apache::lonhtmlcommon::date_setter($formname,
                                                      'startdate',$starttime);
    my $endform = &Apache::lonhtmlcommon::date_setter($formname,
                                                      'enddate',$endtime);
    my $perpetual = 
	'<nobr><label><input type="checkbox" name="no_end_date" />'.
	&mt('None').'</label></nobr>';
    my $table = "<table class=\"LC_descriptive_input\">\n".
	'<tr><td class="LC_description">'.&mt('Start:').'</td>'.
        '<td>'.$startform.'</td>'.
        '<td>&nbsp;</td>'."</tr>\n".
	'<tr><td class="LC_description">'.&mt('End:').'</td>'.
        '<td>'.$endform.'</td>'.
        '<td>'.$perpetual.'</td>'."</tr>\n".
	"</table>\n";
    return $table;
}

sub add_group_folder {
    my ($cdom,$cnum,$now,$groupname,$action,$description,$tools,$groupinfo,
        $gpterm,$ucgpterm,$crstype) = @_;
    if ($cdom eq '' || $cnum eq '') {
        return &mt('Error: invalid course domain or number - group folder creation failed');  
    }
    my ($outcome,$allgrpsmap,$grpmap,$boardsmap,$grppage);
    my $navmap = Apache::lonnavmaps::navmap->new();
    my $crspath = '/uploaded/'.$cdom.'/'.$cnum.'/';
    $allgrpsmap = $crspath.'group_allfolders.sequence';
    my $topmap = $navmap->getResourceByUrl($allgrpsmap);
    undef($navmap);
    if ($action eq 'create') {
    # check if group_allfolders.sequence exists.
        if (!$topmap) {
            my $grpstitle = &mt('[_1] [_2]',$crstype,$ucgpterm);
            my $topmap_url = '/'.$env{'course.'.$env{'request.course.id'}.'.url'};
            $topmap_url =~ s|/+|/|g;
            if ($topmap_url =~ m|^/uploaded|) {
                $outcome = &map_updater($cdom,$cnum,'group_allfolders.sequence',
                                        'toplevelgroup',$grpstitle,$topmap_url);
                if ($outcome ne 'ok') {
                    return $outcome;
                }
            } else {
                $outcome = &mt('Non-standard course - folder for all groups not added.');
                return $outcome;
            }
        }
        my $grpfolder = &mt('[_1] Folder -',$ucgpterm,).$description;
        $grppage='/adm/'.$cdom.'/'.$cnum.'/'.$groupname.'/smppg';
        my $grptitle = &mt('Group homepage').' - '.$description;
        my ($seqid,$discussions,$disctitle);
        my $outcome = &map_updater($cdom,$cnum,'group_folder_'.$groupname.'.sequence',
                                   'grpseq',$grpfolder,$allgrpsmap,$grppage,
                                   $grptitle);
        if ($outcome ne 'ok') {
            return $outcome;
        }
        my $pageout = &create_homepage($cdom,$cnum,$groupname,$groupinfo,
                                       $tools,$gpterm,$ucgpterm,$now);
        # Link to folder for bulletin boards
        $grpmap = $crspath.'group_folder_'.$groupname.'.sequence';
        if (grep/^discussion$/,@{$tools}) {
            $seqid = $now + 1;
            $disctitle = &mt('Discussion Boards');
            my $outcome = &map_updater($cdom,$cnum,'group_boards_'.$groupname.
                                       '.sequence','bbseq',$disctitle,$grpmap);
            if ($outcome ne 'ok') {
                return $outcome;
            }
            $boardsmap = $crspath.'group_boards_'.$groupname.'.sequence';
        }
    } else {
        #modify group folder if status of discussions tools is changed
    }
    my ($furl,$ferr)= &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
    $navmap = Apache::lonnavmaps::navmap->new();
    # modify parameters
    my $parm_result;
    if ($action eq 'create') {
        if ($allgrpsmap) { 
            $parm_result .= &parm_setter($navmap,$cdom,$allgrpsmap,$groupname);
        }
        if ($grpmap) {
            $parm_result .= &parm_setter($navmap,$cdom,$grpmap,$groupname);
        }
        if ($grppage) {
            $parm_result .= &parm_setter($navmap,$cdom,$grppage,$groupname);
        }
        if ($boardsmap) {
            $parm_result .= &parm_setter($navmap,$cdom,$boardsmap,$groupname);
        }
    }
    if ($parm_result) {
        return $parm_result;
    } else {
        return 'ok';
    }
}

sub map_updater {
    my ($cdom,$cnum,$newfile,$itemname,$itemtitle,$parentmap,$startsrc,
        $starttitle,$endsrc,$endtitle) = @_;
    my $outcome;
    $env{'form.'.$itemname} = &new_map($startsrc,$starttitle,$endsrc,
                                       $endtitle);
    my $newmapurl=&Apache::lonnet::finishuserfileupload($cnum,$cdom,$itemname,
                                                        $newfile);
    if ($newmapurl !~ m|^/uploaded|) {
        $outcome = &mt('Error uploading new folder.')." ($newfile): $newmapurl".'<br />';
        return $outcome;
    } 
    my ($errtext,$fatal)=&Apache::lonratedt::mapread($parentmap);
    if ($fatal) {
        $outcome = &mt('Error reading contents of parent folder')." ($parentmap): $errtext".'<br />';
        return $outcome;
    } else {
        my $newidx=&Apache::lonratedt::getresidx($newmapurl);
        $Apache::lonratedt::resources[$newidx] = $itemtitle.':'.$newmapurl.
                                                 ':false:normal:res';
        $Apache::lonratedt::order[1+$#Apache::lonratedt::order]=$newidx;
        my ($outtext,$errtext) = &Apache::lonratedt::storemap($parentmap,1);
        if ($errtext) {
            $outcome = &mt('Error storing updated parent folder')." ($parentmap):  $errtext".'<br />';
            return $outcome;
        }
    }
    return 'ok';
}

sub new_map {
    my ($startsrc,$starttitle,$endsrc,$endtitle) = @_;
    my $newmapstr = '
<map>
 <resource id="1" src="'.$startsrc.'" type="start" title="'.$starttitle.'"></resource>
 <link from="1" to="2" index="1"></link>
 <resource id="2" src="'.$endsrc.'" type="finish" title="'.$endtitle.'"></resource>
</map>
';
    return $newmapstr;
}

sub parm_setter {
    my ($navmap,$cdom,$url,$groupname) = @_;
    my $allresults;
    my %hide_settings = (
                           'course' =>  {
                                          'num' => 13,
                                          'set' => 'yes',
                                        },
                            'group' =>  {
                                          'num' => 5,
                                          'set' => 'no',
                                          'extra' => $groupname,
                                        },
                        );
    my $res = $navmap->getResourceByUrl($url);
    my $symb = $res->symb();
    foreach my $level (keys(%hide_settings)) {
        my $parmresult =  &Apache::lonparmset::storeparm_by_symb($symb,
                                                 '0_hiddenresource',
                                                 $hide_settings{$level}{'num'},
                                                 $hide_settings{$level}{'set'},
                                                 'string_yesno',undef,$cdom,
                                                 undef,undef,
                                                 $hide_settings{$level}{'extra'});
        if ($parmresult) {
            $allresults .= $level.': '.$parmresult;
        }
    }
    return $allresults;
}

sub create_homepage {
    my ($cdom,$cnum,$name,$groupinfo,$tools,$gpterm,$ucgpterm,$now) = @_;
    my $functionality = join(',',@{$tools});
    my $content = &unescape($$groupinfo{description});
    $content=~s/\s+$//s;
    $content=~s/^\s+//s;
    $content=~s/\<br\s*\/*\>$//s;
    $content=&Apache::lonfeedback::clear_out_html($content,1);

    my %pageinfo = (
                     'aaa_title' => "$ucgpterm: $name",
                     'abb_links' => $functionality,
                     'bbb_content' => $content,
                     'ccc_webreferences' => '',
                     'uploaded.lastmodified' => $now,
                   );
   my $putresult = &Apache::lonnet::put('grppage_'.$name,\%pageinfo,$cdom,$cnum);
   return $putresult;
}

sub check_uncheck_tools {
    my ($r,$available) = @_;
    if (ref($available) eq 'ARRAY') { 
        $r->print('
<script type="text/javascript">
function checkAllTools(formname) {
');
        foreach my $tool (@{$available}) {
            $r->print('  checkAll(formname.user_'.$tool.');'."\n");
        }
        $r->print(' checkAll(formname.togglefunc);'."\n");
        $r->print('
}
function uncheckAllTools(formname) {
');
        foreach my $tool (@{$available}) {
            $r->print('  uncheckAll(formname.user_'.$tool.');'."\n");
        }
        $r->print(' uncheckAll(formname.togglefunc);'."\n");
        $r->print('
}
function toggleTools(field,caller) {
     if (caller.checked) {
         checkAll(field);
     } else {
         uncheckAll(field);
     }
     return;   
}
</script>
');
    }
    return;
}

sub validate_groupname {
    my ($groupname,$action,$cdom,$cnum,$gpterm,$ucgpterm,$crstype) = @_;
    my %sectioncount = &Apache::loncommon::get_sections($cdom,$cnum);
    my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);

    my %lt = &Apache::lonlocal::texthash (
                      igna => "Invalid $gpterm name",
                      tgne => "The $gpterm name entered ",
                      grna => "$ucgpterm names and section names used in a ".
                               "$crstype must be unique.",
                      isno => "is not a valid name.",
                      gnmo => "$ucgpterm names may only contain letters, ". 
                              "numbers or underscores.",
                      cnnb => "can not be used as it is the name of ",
                      inth => " in this $crstype", 
                      thgr => "- does not correspond to the name of an ".
                              "existing $gpterm",    
    );

    my $exitmsg = '<span class="LC_error">'.$lt{'igna'}.'</span><br /><br />'.
	$lt{'tgne'}.' "'.$groupname.'" ';
    my $dupmsg = $lt{'grna'};
    my $earlyout;
    if (($groupname eq '') || ($groupname =~ /\W/)) {
        $earlyout = $exitmsg.$lt{'isno'}.'<br />'.$lt{'gnmo'};
        return $earlyout;
    }
    if (exists($sectioncount{$groupname})) {
	return $exitmsg.$lt{'cnnb'}.&mt('a section').$lt{'inth'}.
	    '<br />'.$lt{'grna'};
    }
    if ($action eq 'create' 
	&& exists($curr_groups{$groupname})) {

	return $exitmsg.$lt{'cnnb'}.&mt('an existing [_1]',$gpterm).
	    $lt{'inth'}.'<br />'.$lt{'grna'};

    } elsif ($action eq 'modify') {
        unless(exists($curr_groups{$groupname})) {
            $earlyout = &mt('[_1] name:',$ucgpterm).' '.$groupname.$lt{'thgr'}.
                        $lt{'inth'};
            return $earlyout;
        }
    }
    return;
}

sub topic_bar {
    my ($r,$imgnum,$title) = @_;
    $r->print('
<div class="LC_topic_bar">
    <img alt="'.&mt('Step [_1]',$imgnum).
	      '"src="/res/adm/pages/bl_step'.$imgnum.'.gif" />&nbsp;
    <span>'.$title.'</span>
</div>
');
    return;
}

sub check_changes {
    my ($member_changes,$memchg) = @_;
    my %exclusions;
    @{$exclusions{'changefunc'}} = ('expire');
    @{$exclusions{'changepriv'}} = ('expire','changefunc');

    foreach my $change (@{$member_changes}) {
        if ($change eq 'deletion') {
            next;
        }
        my @checks = ('deletion');
        if (exists($exclusions{$change})) {
            push(@checks,@{$exclusions{$change}});
        }
        my @temp = ();
        foreach my $item (@{$$memchg{$change}}) {
            my $match = 0;
            foreach my $check (@checks) {
                if (defined($$memchg{$check})) { 
                    if (ref(@{$$memchg{$check}}) eq 'ARRAY') {
                        if (@{$$memchg{$check}} > 0) {
                            if (grep/^$item$/,@{$$memchg{$check}}) {
                                $match = 1;
                                last;
                            }
                        }
                    }
                }
            }
            if ($match) {
                next;
            }
            push(@temp,$item);
        }
        @{$$memchg{$change}} = @temp;
    }
}

1;

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