File:  [LON-CAPA] / loncom / interface / loncoursegroups.pm
Revision 1.28: download - view: text, annotated - select for diffs
Wed Jun 28 16:01:01 2006 UTC (17 years, 10 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- typo

# The LearningOnline Network with CAPA
#
# $Id: loncoursegroups.pm,v 1.28 2006/06/28 16:01:01 albertel 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::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 $function = &Apache::loncommon::get_users_function();
    my $tabcol = &Apache::loncommon::designparm($function.'.tabbg');
    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 %functions = (
                      email => 'E-mail',
                      discussion => 'Discussion boards',
                      chat => 'Chat',
                      files => 'File repository',
                      roster => 'Membership roster',
                      homepage => 'Group 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();

    my $rowColor1 = "#dddddd";
    my $rowColor2 = "#eeeeee";

    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,$function,
                                  $tabcol,\%functions,\%idx,$view_permission,
                                  $manage_permission,$rowColor1,$rowColor2);
        } else {
            $r->print(&mt('You do not have group administration '.
                          'privileges in this course'));
        }
    } else {
        &print_main_menu($r,$cdom,$cnum,$function,$tabcol,\%functions,\%idx,
                         $view_permission,$manage_permission,$action,$state,
                         $rowColor1,$rowColor2);
    }
    return OK;
}

sub print_main_menu {
    my ($r,$cdom,$cnum,$function,$tabcol,$functions,$idx,$view_permission,
        $manage_permission,$action,$state,$rowColor1,$rowColor2) = @_;
    my $jscript = qq|
function changeSort(caller) {
    document.$state.sortby.value = caller;
    document.$state.submit();
}\n|;
    $r->print(&header('Course Groups',$jscript,$action,$state,
                      undef,$function));
    &Apache::lonhtmlcommon::add_breadcrumb
        ({href=>"/adm/coursegroups",
          text=>"Course Groups",});
    $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Groups'));
    &display_groups($r,$cdom,$cnum,$function,$tabcol,$functions,$idx,
                    $view_permission,$manage_permission,$action,$state,
                    $rowColor1,$rowColor2);
    $r->print(&footer());
    return;
}

sub display_groups {
    my ($r,$cdom,$cnum,$function,$tabcol,$functions,$idx,$view_permission,
        $manage_permission,$action,$state,$rowColor1,$rowColor2) = @_;
    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='.
                         $env{'form.refpage'}.'&groupname=',
    );
    my %lt = &Apache::lonlocal::texthash( 
                          modify => 'Modify',
                          view   => 'View',
                          delete => 'Delete',
                          act    => 'Action',
                          gname  => 'Group Name',
                          desc   => 'Description',
                          crea   => 'Creator',
                          crtd   => 'Created',
                          last   => 'Last Modified',
                          func   => 'Functionality',
                          quot   => 'Quota (Mb)',
                          memb   => 'Members',
                          file   => 'Files',
                          dibd   => 'Discussion Boards',
                          dius   => 'Disk Use',
                          nogr   => 'No groups exist.',
                          crng   => 'Create a new group',
                          alth   => 'Although your current role has privileges'.
                                    ' to view any existing groups in this course,'.
                                    ' you do not have privileges to create new'.
                                    ' groups.',
                     );
    if ($view_permission) {
        if (!defined($action)) {
            $action = 'view';
        }
        my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
        if (%curr_groups) {
            $r->print('<br /><br />');
            $r->print(&Apache::lonhtmlcommon::start_pick_box());
            $r->print(<<"END");
      <table border="0" cellpadding="4" cellspacing="1">
       <tr bgcolor="$tabcol" align="center">
        <td><b>$lt{'act'}</b></td>
        <td><b><a href="javascript:changeSort('groupname')">$lt{'gname'}</a></b></td>
        <td><b><a href="javascript:changeSort('description')">$lt{'desc'}</a></b></td>
        <td><b><a href="javascript:changeSort('creator')">$lt{'crea'}</a></b>
        </td>
        <td><b><a href="javascript:changeSort('creation')">$lt{'crtd'}</a></b>
        </td>
        <td><b><a href="javascript:changeSort('modified')">$lt{'last'}</a></b>
        </td>
        <td><b>$lt{'func'}</b>
        </td>
        <td><b><a href="javascript:changeSort('quota')">$lt{'quot'}</a></b></td>
        <td><b><a href="javascript:changeSort('totalmembers')">$lt{'memb'}</a></b></td>
        <td><b><a href="javascript:changeSort('totalfiles')">$lt{'file'}</a></b></td>
        <td><b><a href="javascript:changeSort('boards')">$lt{'dibd'}</a></b></td>
        <td><b><a href="javascript:changeSort('diskuse')">$lt{'dius'}</a></b></td>
       </tr>
END
            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 $files_result = &group_files($group,\%grp_info); 
                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);
                }
            }
            my $rowNum = 0;
            my $rowColor;
            foreach my $key (sort(keys(%Sortby))) {
                foreach my $group (@{$Sortby{$key}}) {
                    if ($rowNum %2 == 1) {
                        $rowColor = $rowColor1;
                    } else {
                        $rowColor = $rowColor2;
                    }
                    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 $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.'/grppg';
                    }
                    $link .= '">'.$lt{$action}.'</a>';
                    if ($action eq 'view') { 
                        if (($manage_permission) && 
                            ($env{'form.refpage'} ne 'enrl')) {
                            $link .= '&nbsp;&nbsp;'.$actionlinks{'modify'}.
                                      $group.'">'.$lt{'modify'}.'</a>';
                        }
                    }
                    $r->print('<tr bgcolor="'.$rowColor.'"><td><small>'.$link.'</small></td><td><small>'.$group.'</small></td><td><small>'.$description.'</small></td><td><small>'.$creator.'</small></td><td><small>'. &Apache::lonnavmaps::timeToHumanString($creation).'</small></td><td><small>'. &Apache::lonnavmaps::timeToHumanString($modified).'</small></td><td><small>'.$functionality.'</small></td><td><small>'.$quota.'</small></td><td><small>'.$totalmembers.'</small></td><td><small>'.$totalfiles.'</small></td><td><small>'.$boards.'</small></td><td><small>'.$diskuse.'</small></td></tr>');
                    $rowNum ++;
                }
            }
            $r->print('</table>');
            $r->print(&Apache::lonhtmlcommon::end_pick_box());
            $r->print('<input type="hidden" name="refpage" '.
                      'value="'.$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{'crng'});

            }
        }
    } 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.'/grppg">'.$group,'</a><font><br /><small>'.$description.'</small><br /><br />');
                }
            }
        } else {
            $r->print(&mt('You are not currently a member of any '.
                          'active groups in this course'));
        }
    }
    return;
}

sub group_administration {
    my ($r,$action,$state,$cdom,$cnum,$function,$tabcol,$functions,$idx,
        $view_permission,$manage_permission,$rowColor1,$rowColor2) = @_;
    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);

    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 (($action eq 'create') || (($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'};
            }
        }
    }

    my %toolprivs =
	(
	 email      => {
	     sgm => 'Send group mail',
	     sgb => 'Broadcast mail',
	 },
	 discussion => {
	     cgb => 'Create boards',
	     pgd => 'Post',
	     pag => 'Anon. posts',
	     rgi => 'Get identities', 
	     vgb => 'View boards',
	 },
	 chat       => {
	     pgc => 'Chat',
	 },
	 files      => {
	     rgf => 'Retrieve',
	     ugf => 'Upload',
             mgf => 'Modify',
	     dgf => 'Delete',
             agf => 'Control Access',
	 },
	 roster     => {
	     vgm => 'View',
	 },
	 homepage   => {
	     vgh => 'View page',
	     mgh => 'Modify page',
	 },
	 );

    my %fixedprivs = 
	(
	 email      => {sgm => 1},
	 discussion => {vgb => 1},
	 chat       => {pgc => 1},
	 files      => {rgf => 1},
	 roster     => {vgm => 1},
	 homepage   => {vgh => 1},
	 );

    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',
		 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';
                    }
                }
            }
        }
    }
 
    my $jscript = &Apache::loncommon::check_uncheck_jscript();
    $jscript .= qq|
function nextPage(formname,nextstate) {
    formname.state.value= nextstate;
    formname.submit();
}
function backPage(formname,prevstate) {
    formname.state.value = prevstate;
    formname.submit();
}
function changeSort(caller) {
    document.$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);
    $r->print(&header('Course Groups Manager',
		      $jscript,$action,$state,$page,$function,$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=>"Course Groups",
          faq=>9,bug=>'Instructor Interface',});
    }

    my %trail = ();
    %{$trail{'create'}} = &Apache::lonlocal::texthash (
                            pick_name => 'Group Settings',
                            pick_members => 'Select Members',
                            pick_privs => 'Choose Privileges',
                            result => 'Creation Complete',
                          );
    %{$trail{'modify'}} = &Apache::lonlocal::texthash(
                            pick_group => 'Groups',
                            pick_task => 'Choose Task',
                            change_settings => 'Group 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 group',
                             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}"});
                $r->print(&Apache::lonhtmlcommon::breadcrumbs
			  ('Course Groups Manager'));
                &display_control($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                       \%sectioncount,$groupname,$description,$functions,
                       \@tools,\%toolprivs,\%fixedprivs,$startdate,$enddate,
                       \%users,\%userdata,$idx,\%memchg,\%usertools,
                       $function,$view_permission,$manage_permission,
                       \%stored,$granularity,$specificity,\@types,\@roles,
                       \@sections,\%states,\%navbuttons,$rowColor1,$rowColor2);
                last;
            } else {
                if (($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 groups"});
        $r->print(&Apache::lonhtmlcommon::breadcrumbs
		  ('Course Groups Manager'));
        &display_groups($r,$cdom,$cnum,$function,$tabcol,$functions,$idx,
                        $view_permission,$manage_permission,$action,$state,
                        $rowColor1,$rowColor2);

    }
    $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'};

    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,$cnum,$tabcol,$action,$state,$page,$sectioncount,$groupname,
        $description,$functions,$tools,$toolprivs,$fixedprivs,$startdate,
        $enddate,$users,$userdata,$idx,$memchg,$usertools,$function,
        $view_permission,$manage_permission,$stored,$granularity,$specificity,
        $types,$roles,$sections,$states,$navbuttons,$rowColor1,$rowColor2)=@_;
    if ($action eq 'create') {
        if ($state eq 'pick_name') {
            &general_settings_form($r,$cdom,$cnum,$action,$tabcol,$state,$page,
                                   $functions,$tools,$toolprivs,$fixedprivs,
                                   $sectioncount,$stored,$states,$navbuttons,
                                   $rowColor1,$rowColor2);
        } elsif ($state eq 'pick_members') {
            &choose_members_form($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                                 $groupname,$description,$granularity,
                                 $startdate,$enddate,$tools,$fixedprivs,
                                 $toolprivs,$functions,$users,$userdata,$idx,
                                 $stored,$states,$navbuttons,$rowColor1,
                                 $rowColor2);
        } elsif ($state eq 'pick_privs') {
            &choose_privs_form($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                               $startdate,$enddate,$tools,$functions,
                               $toolprivs,$fixedprivs,$userdata,$usertools,
                               $idx,$states,$stored,$sectioncount,$navbuttons,
                               $rowColor1,$rowColor2);
        } elsif ($state eq 'result') {
            &process_request($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                             $groupname,$description,$specificity,$userdata,
                             $startdate,$enddate,$tools,$functions,
                             $toolprivs,$usertools,$idx,$types,$roles,
                             $sections,$states,$navbuttons,$memchg,
                             $sectioncount,$stored,$rowColor1,$rowColor2);
        }
    } elsif ($action eq 'modify') {
        my $groupname = $env{'form.groupname'};
        if ($state eq 'pick_group') {
            &display_groups($r,$cdom,$cnum,$function,$tabcol,$functions,$idx,
                            $view_permission,$manage_permission,$action,$state,
                            $rowColor1,$rowColor2);
        } elsif ($state eq 'pick_task') {
            &modify_menu($r,$groupname,$page);
        } elsif ($state eq 'change_settings') {
            &general_settings_form($r,$cdom,$cnum,$action,$tabcol,$state,$page,
                                   $functions,$tools,$toolprivs,$fixedprivs,
                                   $sectioncount,$stored,$states,$navbuttons,
                                   $rowColor1,$rowColor2);
        } elsif ($state eq 'change_members') {
            &change_members_form($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                                 $groupname,$description,$startdate,$enddate,
                                 $tools,$fixedprivs,$functions,$users,
                                 $userdata,$granularity,$specificity,$idx,
                                 $states,$navbuttons,$rowColor1,$rowColor2);
        } elsif ($state eq 'add_members') {
            &add_members_form($r,$tabcol,$action,$state,$page,$startdate,
                              $enddate,$groupname,$description,$granularity,
                              $sectioncount,$tools,$functions,$stored,$states,
                              $navbuttons,$rowColor1,$rowColor2);
        } elsif ($state eq 'pick_members') {
            &choose_members_form($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                                 $groupname,$description,$granularity,
                                 $startdate,$enddate,$tools,$fixedprivs,
                                 $toolprivs,$functions,$users,$userdata,$idx,
                                 $stored,$states,$navbuttons,$rowColor1,
                                 $rowColor2);
        } elsif ($state eq 'pick_privs') {
            &choose_privs_form($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                               $startdate,$enddate,$tools,$functions,
                               $toolprivs,$fixedprivs,$userdata,$usertools,
                               $idx,$states,$stored,$sectioncount,$navbuttons,
                               $rowColor1,$rowColor2);
        } elsif ($state eq 'change_privs') {
            &change_privs_form($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                               $startdate,$enddate,$tools,$functions,
                               $toolprivs,$fixedprivs,$userdata,$usertools,
                               $memchg,$idx,$states,$stored,$sectioncount,
                               $navbuttons,$rowColor1,$rowColor2);
        } elsif ($state eq 'chgresult' || $state eq 'memresult' || 
                 $state eq 'addresult') {
            &process_request($r,$cdom,$cnum,$tabcol,$action,$state,$page,
                             $groupname,$description,$specificity,$userdata,
                             $startdate,$enddate,$tools,$functions,
                             $toolprivs,$usertools,$idx,$types,$roles,
                             $sections,$states,$navbuttons,$memchg,
                             $sectioncount,$stored,$rowColor1,$rowColor2);
        }
    }
}

sub header {
    my ($bodytitle,$jscript,$action,$state,$page,$function,$loaditems) = @_;
    my $start_page=
	&Apache::loncommon::start_page($bodytitle,
				       '<script type="text/javascript">'.
				       $jscript.'</script>',
				       {'function'    => $function,
					'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 {
    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'} = $active.' - active<br />'.$previous.' -previous<br />'.$future.' -future';
    }
    return 'ok';
}


sub general_settings_form {
    my ($r,$cdom,$cnum,$action,$tabcol,$formname,$page,$functions,$tools,
        $toolprivs,$fixedprivs,$sectioncount,$stored,$states,$navbuttons,
        $rowColor1,$rowColor2) = @_;
    my ($nexttext,$prevtext);
    $r->print(' <br />
 <table width="100%" cellpadding="0" cellspacing="0" border="0">
');
    &groupsettings_options($r,$tabcol,$functions,$action,$formname,$stored,1);
    $r->print(' 
  <tr>
   <td colspan="4">&nbsp;</td>
  </tr>');
    &access_date_settings($r,$tabcol,$action,$formname,$stored,2);
    $r->print('
  <tr>
   <td colspan="4">&nbsp;</td>
  </tr>');
    if ($action eq 'create') {
        &membership_options($r,$action,$formname,$tabcol,$sectioncount,3);
        $nexttext = $$navbuttons{'gtns'};
    } else {
        my @available = ();
        my @unavailable = ();
        &check_tools($functions,$tools,\@available,\@unavailable);
        @{$tools} = sort(keys(%{$functions}));
        &privilege_specificity($r,$tabcol,$rowColor1,$rowColor2,$action,
                               3,$tools,$stored,$toolprivs,$fixedprivs,
                               \@available,$formname);
        $r->print('
  <tr>
   <td colspan="4">&nbsp;</td>
  </tr>');
        &mapping_options($r,$action,$formname,$page,$tabcol,$sectioncount,
                         $states,$stored,$navbuttons,4,5,$rowColor1,
                         $rowColor2);
        $nexttext = $$navbuttons{'mose'};
    }
    $prevtext = $$navbuttons{'gtpp'};
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    $r->print('
 </table>');
    return;
}

sub groupsettings_options {
    my ($r,$tabcol,$functions,$action,$formname,$stored,$image) = @_;
    my %lt = &Apache::lonlocal::texthash(
        'gdat' => 'Group open and close dates',
        'sten' => 'Set a start date/time and end date/time for the group',
        'gfun' => 'Group functionality',
        'gnde' => 'Group name, description and available functionality',
        'desc' => 'Description',
        'func' => 'Functionality',
        'gnam' => 'Group Name',
        'doyo' => 'Do you want to assign different functionality '.
                  'to different group members?',
    );
    &topic_bar($r,$tabcol,$image,$lt{'gnde'});
    $r->print('
   <tr>
    <td>&nbsp;</td>
    <td colspan="3">
     <table border="0" cellpadding="2" cellspacing="2">
      <tr>
       <td><b>'.$lt{'gnam'}.':</b></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'});
    }
    $r->print(<<"END");
       </td>
      <tr>
      <tr>
       <td><b>$lt{'desc'}:</b></td>
       <td colspan="5"><input type="text" name="description" size="40"
                                                    value="" />
       </td>
      <tr>
      <tr>
       <td><b>$lt{'func'}:</b></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><b>Granularity:</b></td>
       <td colspan="9">'.$lt{'doyo'}.'&nbsp;<label><input type="radio" name="granularity" value="Yes" />'.&mt('Yes').'</label>&nbsp;<label><input type="radio" name="granularity" value="No" checked="checked" />'.&mt('No').'</label>');
    if ($action eq 'modify') {
        $r->print('&nbsp;&nbsp;('.&mt('Currently set to "[_1]"',
                                      $$stored{'granularity'}).')');
    }
    $r->print('
       </td>
      </tr>
     </table>
    </td>
   </tr>
');
    return;
}

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

    my @roles = ('st','cc','in','ta','ep','cr');

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

    &topic_bar($r,$tabcol,$image,$lt{'pipa'});
    $r->print('
   <tr>
    <td>&nbsp;</td>
    <td colspan="3">
     <b>'.$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'});
    }
    $r->print('
     <br />
     <br />
     <table border="0">
      <tr>
       <td><b>'.$lt{'acty'}.'</b></td>
       <td>&nbsp;</td>
       <td><b>'.$lt{'coro'}.'</b></td>');
    if (@sections >0) {
        $r->print('
       <td>&nbsp;</td>
       <td><b>'.$lt{'cose'}.'</b></td>
       <td>&nbsp;</td>');
    }
    $r->print('</tr><tr>');
    $r->print(&Apache::lonhtmlcommon::status_select_row(\%status_types));
    $r->print('<td>&nbsp;</td>');
    $r->print(&Apache::lonhtmlcommon::role_select_row(\@roles));
    if (@sections > 0) {
        @sections = sort {$a cmp $b} @sections;
        unshift(@sections,'all'); # Put 'all' at the front of the list
        unshift(@sections,'none'); # Put 'no sections' next
        $r->print('<td>&nbsp;</td>
                   <td colspan="3" align="center" valign="top">'.
        &sections_selection(\@sections,'sectionpick').'</td>');
    }
    $r->print('
      </tr>
     </table>
    </td>
   </tr>');
    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.'" />all sections'."\n";
        } elsif ($sec eq 'none') {
            $section_sel .= '  <option value="'.$sec.'" />no section'."\n"; 
        } else {
            $section_sel .= '  <option value="'.$sec.'" />'.$sec."\n";
        }
    }
    my $output = '
        <select name="'.$elementname.'" multiple="true" size="'.$numvisible.'">
          '.$section_sel.'
        </select>';
    return $output;
}

sub access_date_settings {
    my ($r,$tabcol,$action,$formname,$stored,$image) = @_;
    my %lt = &Apache::lonlocal::texthash(
                'sten' => 'Default start and end dates for group 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 ($start_table,$end_table) = &date_setting_table
                                    ($starttime,$endtime,$formname);
    &topic_bar($r,$tabcol,$image,$lt{'sten'});
    $r->print('
   <tr>
    <td>&nbsp;</td>
    <td colspan="3">'.$start_table.'</td>
   <tr>
   <tr>
    <td colspan="4">&nbsp;</td>
   </tr>
   <tr>
    <td>&nbsp;</td>
    <td colspan="3">'.$end_table.'</td>
   <tr>');
    return;
}

sub choose_members_form {
    my ($r,$cdom,$cnum,$tabcol,$action,$formname,$page,$groupname,$description,
        $granularity,$startdate,$enddate,$tools,$fixedprivs,$toolprivs,
        $functions,$users,$userdata,$idx,$stored,$states,$navbuttons,
        $rowColor1,$rowColor2) = @_;
    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);
    $r->print('
<table width="100%" cellpadding="0" cellspacing="0" border="0">
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
');
    if ($earlyout) {
        $r->print($earlyout.'</td></tr>');
        &display_navbuttons($r,$formname,$$states{$action}[$page-1],
                           $$navbuttons{'gtps'});
        $r->print('</table>');
        return;
    } 
    my ($specimg,$memimg);
    my @available = ();
    my @unavailable = ();
    &check_tools($functions,$tools,\@available,\@unavailable);
    if ($action eq 'create') {
        &print_current_settings($r,$action,$tabcol,$rowColor1,$rowColor2,
                                $functions,$startdate,$enddate,$groupname,
                                $description,$granularity,\@available,
                                \@unavailable);
        $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($r,$tabcol,$rowColor1,$rowColor2,$action,
                          $specimg,$tools,$stored,$toolprivs,
                          $fixedprivs,\@available,$formname);
    my $newusers = &pick_new_members($r,$action,$formname,$tabcol,$rowColor1,
                                    $rowColor2,\@available,$idx,$stored,
                                    $memimg,$users,$userdata,$granularity,
                                    \%origmembers);
    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'});
    }
    $r->print('</table>');
    return;
}

sub display_navbuttons {
    my ($r,$formname,$prev,$prevtext,$next,$nexttext) = @_;
    $r->print('
    <tr>
     <td colspan="4">&nbsp;</td>
    </tr>
    <tr>
     <td>&nbsp;</td>
     <td colspan="3">');
    if ($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('
     </td>
    </tr>
');
}

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,$tabcol,$rowColor1,$rowColor2,$functions,$startdate,$enddate,
           $groupname,$description,$granularity,$available,$unavailable) =@_;

    my %lt = &Apache::lonlocal::texthash(
        grna => 'Group Name',
        desc => 'Description',
        grfn => 'Group Functions',
        gran => 'Granularity',
        dfac => 'Default access dates',
        ygrs => 'Your group selections',
        tfwa => 'The following settings will apply to the group:',
        difn => 'Different functionality<br />for different users:',
        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);
    }
    $r->print('<table border="0" cellpadding="0" cellspacing="20">');
    if ($action eq 'create') {
        $r->print('
<tr>
 <td><font face="arial,helvetica,sans-serif"><b>'.$lt{'ygrs'}.'</b></font>
<br />'.$lt{'tfwa'}.'
 </td>
</tr>');
    }
    $r->print('<tr><td>');
    $r->print(&Apache::lonhtmlcommon::start_pick_box());
    $r->print('
<tr>
 <td>
<table cellspacing="1" cellpadding="4">
 <tr bgcolor="'.$tabcol.'" align="center">
  <td><b>'.$lt{'grna'}.'</b></td>
  <td><b>'.$lt{'desc'}.'</b></td>
  <td><b>'.$lt{'grfn'}.'</b></td>
  <td><b>'.$lt{'gran'}.'</b></td>
  <td><b>'.$lt{'dfac'}.'</b></td>
 </tr>
 <tr bgcolor="'.$rowColor2.'">
  <td valign="top"><small>'.$groupname.'</small></td>
  <td valign="top"><small>'.$description.'</small></td>
  <td>
');
    if (@{$available} > 0) {
        $r->print('<small><b>Available:</b></small>
                    <table cellpadding="" cellspacing="1"><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><small>'.$$functions{$$available[$i]}.
                                          '</small></td><td>&nbsp;</td>');
        }
        if ((@{$available} > 3) && (@{$available}%2)) {
            $r->print('<td>&nbsp;</td><td>&nbsp;</td>');
        }
        $r->print('</tr></table><br />');
    }
    if (@{$unavailable} > 0) {
        $r->print('<small><b>Unavailable:</b></small>
                    <table cellpadding="0" cellspacing="1"  border="0"><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><small>'.$$functions{$$unavailable[$j]}.
                                              '</small></td><td>&nbsp;</td>');
        }
        if ((@{$unavailable} > 3) && (@{$unavailable}%2)) {
            $r->print('<td>&nbsp;</td><td>&nbsp;</td>');
        }
        $r->print('</tr></table>');
    }
    $r->print(<<"END");
  </td>
  <td valign="top"><small><b>$lt{'difn'}
  </b> $granularity</small> 
  <td valign="top"><small><b>$lt{'stda'}</b> $showstart<br />
      <b>$lt{'enda'}</b> $showend</small>
  </td>
 </tr>
</table>
</td>
</tr>
END
    $r->print(&Apache::lonhtmlcommon::end_pick_box());
    $r->print('</td></tr></table><br />');
    return;
}

sub pick_new_members {
    my ($r,$action,$formname,$tabcol,$rowColor1,$rowColor2,$available,$idx,
        $stored,$img,$users,$userdata,$granularity,$origmembers) = @_;
    my %lt = &Apache::lonlocal::texthash(
          'gpme' => 'Group 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 group.',
          '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,$tabcol,$img,$lt{'gpme'});
    if (keys(%members) > 0) {
        $r->print('
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
    <table>
     <tr>');
        &check_uncheck_buttons($r,$formname,'member',$lt{'addm'});
        if (@{$available} > 0 && $granularity eq 'Yes') {
            $r->print('<td><nobr>
     <fieldset><legend><b>'.$lt{'setf'}.'</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('</tr></table>
  </td>
 </tr>
 <tr>
  <td colspan="4">&nbsp;</td>
 </tr>
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
        ');
        $r->print(&Apache::lonhtmlcommon::start_pick_box());
        $r->print('
   <table border="0" cellpadding="4" cellspacing="1">
    <tr bgcolor="'.$tabcol.'" align="center">
     <td><b>'.&mt('Add?').'</b></td>
     <td><b><a href="javascript:changeSort('."'fullname'".')">'.&mt('Name').'</a></b></td>
     <td><b><a href="javascript:changeSort('."'username'".')">'.&mt('Username').'</a></b>
     </td>
     <td><b><a href="javascript:changeSort('."'domain'".')">'.&mt('Domain').'</a></b></td>
     <td><b><a href="javascript:changeSort('."'id'".')">ID</a></b></td>
');
        if (@{$available} > 0) {
            $r->print('<td><b>'.$lt{'func'}.'</b></td>');
        }
        $r->print('</tr>');
        if (@{$available} > 0) {
            if ($granularity eq 'Yes') {
                $r->print('<tr bgcolor="#cccccc">
 <td colspan="5">&nbsp;</td>
 <td align="center"><small><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></small></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}[$$idx{id}]}},$user);
            } else {
                push(@{$Sortby{$members{$user}[$$idx{fullname}]}},$user);
            }
        }
        my $rowNum = 0;
        my $rowColor;
        foreach my $key (sort(keys(%Sortby))) {
            foreach my $user (@{$Sortby{$key}}) {
                if ($rowNum %2 == 1) {
                    $rowColor = $rowColor1;
                } else {
                    $rowColor = $rowColor2;
                }
                my $id = $members{$user}[$$idx{id}];
                my $fullname = $members{$user}[$$idx{fullname}];
                my $udom = $members{$user}[$$idx{udom}];
                my $uname = $members{$user}[$$idx{uname}];
                $r->print('<tr bgcolor="'.$rowColor.'"><td align="right">
   <input type="checkbox" name="member" value="'.$user.'" /></td><td><small>'.
    $fullname.'</small></td><td><small>'.$uname.'</small></td><td><small>'.
    $udom.'</small></td><td><small>'.$id.'</small></td>');
                if (@{$available} > 0) {
                    $r->print('<td align="center"><nobr><small>'.
                              '&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('</small></nobr></td>');
                }
                $r->print('</tr>'."\n");
                $rowNum ++;
            }
        }
        $r->print(&Apache::lonhtmlcommon::end_pick_box());
        $r->print('
     </td>
    </tr>');
    } else {
        $r->print('
    <tr>
     <td>&nbsp;</td>
     <td colspan="3">
');
        if ($totalusers > 0) {
            $r->print($lt{'nnew'}.'<br /><br />'.$lt{'yoma'});
        } else { 
            $r->print($lt{'nome'});
        }
        $r->print('
     </td>
    </tr>');
    }
    return $newusers;
}

sub privilege_specificity {
    my ($r,$tabcol,$rowColor1,$rowColor2,$action,$img,$tools,$stored,
        $toolprivs,$fixedprivs,$available,$formname) = @_;
    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 group is configured ',
      'sdif' => 'so different group members can receive different privileges.',
      'sall' => 'so all group members will receive the same privileges.',
      'algm' => 'All group members will receive the same privileges.',
      'smgp' => 'Some group members will receive different privileges from '.
                'others.',
      'thwi' => 'These will be the privileges all group 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 group assignment '.
                'for specific sections/roles ',
      'asyo' => 'As you have chosen not to include any functionality in the '.
                'group, 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,$tabcol,$img,$lt{'uprv'});
    $r->print('
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
  ');
    if ((($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 ($$stored{'specificity'} eq 'Yes') {
                $r->print($lt{'sdif'});
                $specific{'Yes'} = $specific{'No'};
                $specific{'No'} = '';
            } else {
                $r->print($lt{'sall'});
            }
        }
        if ($totaloptionalprivs) {
            $r->print('
<br /><br /><label><nobr><input type="radio" name="specificity" value="No" '.$specific{'No'}.' />&nbsp;'.$lt{'algm'}.'</nobr></label><br/>
<label><nobr><input type="radio" name="specificity" value="Yes" '.$specific{'Yes'}.' />&nbsp;'.$lt{'smgp'}.'</nobr></label>
  </td>
 </tr>
 <tr>
  <td colspan="4">&nbsp;</td>
 </tr>');
        } else {
            $r->print('<input type="hidden" name="specificity" value="No" />');
        }
        if ($totaloptionalprivs) {
            $r->print('
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">'.$lt{'plin'});
            if ($action eq 'create') {
                $r->print(' '.$lt{'thwi'});
            }
            $r->print('<br />'.$lt{'thes'});
            if ($action eq 'create') {
                $r->print('('.&mt('if enabled on the next page').').');
            } else {
                $r->print('('.&mt('if enabled below').').');
            }
            $r->print('<br /><br />
  </td>
 </tr>
 <tr>
  <td>&nbsp;</td>
  <td colspan="2"><table><tr>');
        &check_uncheck_buttons($r,$formname,'defpriv',$lt{'oppr'});
        $r->print('
    </tr>
   </table>
  </td>
  <td width="100%">&nbsp;</td>
 </tr><tr>
  <td>&nbsp;</td>
  <td colspan="3">
   <br />
');
        } else {
            $r->print('<tr><td>&nbsp;</td><td colspan="3">'.$lt{'algm'}.'<br /><br />');
        }
        &default_privileges($r,$action,$tabcol,$rowColor1,$rowColor2,
                            $tools,$toolprivs,$fixedprivs,$available);
    } else {
        if ($action eq 'create') {
            $r->print($lt{'asyo'});
        } elsif ($action eq 'modify' && $formname eq 'pick_members') {
            my @defprivs;
            if (ref($$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($r,$tabcol,$rowColor1,$rowColor2,$tools,
                              $toolprivs,\@defprivs);
        }
    }
    $r->print('
  </td>
 </tr>
');
    return;
}

sub default_privileges {
    my ($r,$action,$tabcol,$rowColor1,$rowColor2,$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());
    $r->print('<tr>
                <td bgcolor="'.$tabcol.'" valign="top">
                 <table cellspacing="0" cellpadding="1">
                  <tr>
                   <td valign="top"><b>'.$lt{'func'}.'</b></td>
                  </tr>
                  <tr>
                   <td valign="top"><b>'.$lt{'fixp'}.'</b></td>
                  </tr>
                  <tr>
                   <td valign="top"><b>'.$lt{'oppr'}.'</b></td>
                  </tr>
                 </table>
                </td>
    ');
    foreach my $tool (@{$tools}) {
        $r->print('<td align="center" valign="top">
                    <table cellspacing="0" cellpadding="1">
                     <tr bgcolor="#cccccc">
                      <td colspan="2" align="center"><b>'.$tool.'</b></td>
                     </tr>
        ');
        my $privcount = 0;
        my $fixed = '';
        my $dynamic = '';
        foreach my $priv (sort(keys(%{$$toolprivs{$tool}}))) {
            if (exists($$fixedprivs{$tool}{$priv})) {
                $fixed .= '<input type="hidden" name="defpriv" value="'.$priv.'" />'.$$toolprivs{$tool}{$priv}.'&nbsp;';
                if ($action eq 'modify') {
                    if (grep/^$tool$/,@{$available}) {
                        $fixed .= '<small>'.&mt('(on)').'<small>&nbsp;';
                    } else {
                        $fixed .= '<small>'.&mt('(off)').'<small>&nbsp;';
                    }
                }
            } else {
                $privcount ++;
                if ($privcount == 3) {
                    $dynamic .= '</tr>
                                 <tr bgcolor="'.$rowColor1.'">'."\n";
                }
                $dynamic .= '<td><label><input type="checkbox" name="defpriv" value="'.$priv.'" />'.$$toolprivs{$tool}{$priv}.'</label></td>'."\n";
            }
        }
        if ($dynamic eq '') {
            $dynamic = '<td>None</td>'."\n";
        }
        if ($privcount < 3) {
            $dynamic .= '</tr>
                         <tr bgcolor="'.$rowColor1.'">
                          <td colspan="2">&nbsp;</td>'."\n";
        } elsif ($privcount%2) {
            $dynamic = '<td>&nbsp;</td>'."\n";
        }
        $r->print('<tr bgcolor="'.$rowColor2.'">
                    <td colspan="2" align="center"><nobr>'.$fixed.'</nobr></td>
                   </tr>
                   <tr bgcolor="'.$rowColor1.'">'."\n".$dynamic.'</tr>'."\n".'</table>'."\n".'</td>
        ');
    }
    $r->print('</tr>'."\n");
    $r->print(&Apache::lonhtmlcommon::end_pick_box());
    $r->print('<br />');
    return;
}

sub display_defprivs {
    my ($r,$tabcol,$rowColor1,$rowColor2,$tools,$toolprivs,$defprivs) = @_;
    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,$cnum,$tabcol,$action,$formname,$page,$groupname,$description,
        $startdate,$enddate,$tools,$fixedprivs,$functions,$users,$userdata,
        $granularity,$specificity,$idx,$states,$navbuttons,$rowColor1,
        $rowColor2) = @_;
    my %lt = &Apache::lonlocal::texthash(
                                         grse => 'Group settings',
                                         mogm => 'Modify group 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'};
    $r->print('
<br />
<table width="100%" cellpadding="0" cellspacing="0" border="0">
');
    &topic_bar($r,$tabcol,1,$lt{'grse'});
    $r->print('
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
');
    &print_current_settings($r,$action,$tabcol,$rowColor1,$rowColor2,
                            $functions,$startdate,$enddate,$groupname,
                          $description,$granularity,\@available,\@unavailable);
$r->print('
</td></tr><tr><td colspan="4">&nbsp;</td></tr>');
    &topic_bar($r,$tabcol,2,$lt{'mogm'});
    $r->print('
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
');
    &current_membership($r,$cdom,$cnum,$formname,$tabcol,$rowColor1,
                        $rowColor2,$groupname,\@available,\@unavailable,
                        $fixedprivs,$granularity,$specificity);
    $r->print('</td>');
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    $r->print('</table>');
    return;
}

sub current_membership {
    my ($r,$cdom,$cnum,$formname,$tabcol,$rowColor1,$rowColor2,$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' 
                                        );
    if (keys(%membership) > 0) {
        my %current = ();
        my %allnames = ();
        my $hastools = 0;
        my $addtools = 0;
        my $num_reenable = 0;
        my $num_activate = 0;
        my $num_expire = 0;
        foreach my $key (sort(keys(%membership))) {
            if ($key =~ /^\Q$groupname\E:([^:]+):([^:]+)$/) {
                my $uname = $1;
                my $udom = $2;
                my $user = $uname.':'.$udom;
                my($end,$start,@userprivs) = split(/:/,$membership{$key});
                unless ($start == -1) {
                    $allnames{$udom}{$uname} = 1;
                    $current{$user} = {
			uname     => $uname,
			udom      => $udom,
			start     => &Apache::lonlocal::locallocaltime($start),
			currtools => [],
			newtools  => [],
		    };

                    if ($end == 0) {
                        $current{$user}{end} =  'No end date';
                    } else {
                        $current{$user}{end} = 
                                     &Apache::lonlocal::locallocaltime($end);
                    }
                    my $now = time;
                    if (($end > 0) && ($end < $now)) {
                        $current{$user}{changestate} = 'reenable';
                        $num_reenable++;
                    } elsif (($start > $now)) {
                        $current{$user}{changestate} = 'activate';
                        $num_activate ++;
                    } else {
                        $current{$user}{changestate} = 'expire';
                        $num_expire ++;
                    }
                    if (@userprivs > 0) {
                        foreach my $tool (sort(keys(%{$fixedprivs}))) {
                            foreach my $priv (keys(%{$$fixedprivs{$tool}})) {
                                if (grep/^$priv$/,@userprivs) {
                                    push(@{$current{$user}{currtools}},$tool);
                                    last;
                                }
                            }
                        }
                        $hastools = 1;
                    }
                    if (@{$available} > 0) {
                        if (@{$current{$user}{currtools}} > 0) {
                            if ("@{$available}" ne "@{$current{$user}{currtools}}") {
                                foreach my $tool (@{$available}) {
                                    unless (grep/^$tool$/,@{$current{$user}{currtools}}) {
                                        push(@{$current{$user}{newtools}},$tool);
                                    }
                                }
                            }
                        } else {
                            @{$current{$user}{newtools}} = @{$available};
                        }
                        if (@{$current{$user}{newtools}} > 0) {
                            $addtools = 1;
                        }
                    }
                }
            }
        }
        if (keys(%current) > 0) {
            my %idhash;
            foreach my $udom (keys(%allnames)) {
                %{$idhash{$udom}} = &Apache::lonnet::idrget($udom,
                                                keys(%{$allnames{$udom}}));
                foreach my $uname (keys(%{$idhash{$udom}})) {
                    $current{$uname.':'.$udom}{'id'} = $idhash{$udom}{$uname};
                }
                foreach my $uname (keys(%{$allnames{$udom}})) {
                    $current{$uname.':'.$udom}{'fullname'} =
                                &Apache::loncommon::plainname($uname,$udom,
                                                                  'lastname');
                }
            }
            $r->print('
 <tr>
  <td>&nbsp;</td>
  <td colspan="2">
   <table>
    <tr>');
            if ($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>
  </td>
  <td width="100%">&nbsp;</td>
 </tr>
 <tr>
  <td colspan="4">&nbsp;</td>
 </tr>
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
END
            $r->print(&Apache::lonhtmlcommon::start_pick_box());
            $r->print(<<"END");
   <table border="0" cellpadding="4" cellspacing="1">
    <tr bgcolor="$tabcol" align="center">
     <td><b>$lt{'actn'}</b></td>
     <td><b><a href="javascript:changeSort('fullname')">$lt{'name'}</a></b></td>
     <td><b><a href="javascript:changeSort('username')">$lt{'usnm'}</a></b>
     </td>
     <td><b><a href="javascript:changeSort('domain')">$lt{'doma'}</a></b></td>
     <td><b><a href="javascript:changeSort('id')">ID</a></b></td>
     <td><b><a href="javascript:changeSort('start')">$lt{'stda'}</a></b></td>
     <td><b><a href="javascript:changeSort('end')">$lt{'enda'}</a></b></td>
END
            my $colspan = 0;
            if ($hastools) {
                $r->print('<td><b>'.$lt{'curf'}.'</b></td>');
                $colspan ++;  
            }
            if ($addtools) {
                $r->print('<td><b>Additional Functionality</b></td>');
                $colspan ++;
            }
            $r->print('</tr>');
            if ($colspan) {
                if ($granularity eq 'Yes') {
                    $r->print('<tr bgcolor="#cccccc">
 <td colspan="7">&nbsp;</td>
 <td colspan="'.$colspan.'" align="center"><small><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></small></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);
                }
            }
            my $rowNum = 0;
            my $rowColor;
            foreach my $key (sort(keys(%Sortby))) {
                foreach my $user (@{$Sortby{$key}}) {
                    if ($rowNum %2 == 1) {
                        $rowColor = $rowColor1;
                    } else {
                        $rowColor = $rowColor2;
                    }
                    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};
                    $r->print('<tr bgcolor="'.$rowColor.'">
                                <td><small>');
                    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><small>'.
    $fullname.'</small></td><td><small>'.$uname.'</small></td><td><small>'.
    $udom.'</small></td><td><small>'.$id.'</small></td><td><small>'.$start.
    '</small></td><td><small>'.$end.'</small></td>');
                    if ($hastools) {
                        $r->print('<td align="left"><small><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;');
                        }
                        $r->print('</nobr></small></td>');
                    }
                    if ($addtools) {
                        $r->print('<td align="left"><small>');
                        if ($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('</small></td>');
                    }
                    $r->print('</tr>'."\n");
                    $rowNum ++;
                }
            }
            $r->print(&Apache::lonhtmlcommon::end_pick_box());
            $r->print('
  </td>
 </tr>');
        }
    }
    return;
}

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


sub change_privs_form {
    my ($r,$cdom,$cnum,$tabcol,$action,$formname,$page,$startdate,$enddate,
       $tools,$functions,$toolprivs,$fixedprivs,$userdata,$usertools,
       $memchg,$idx,$states,$stored,$sectioncount,$navbuttons,$rowColor1,
       $rowColor2) = @_;
    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 group.',
    );
    $r->print(&Apache::lonhtmlcommon::echo_form_input(
         ['origin','action','state','page','sortby'],\@regexps));
    if ($env{'form.branch'} eq 'adds') {
        $nexttext = $$navbuttons{'adme'};
    } else {
        $nexttext = $$navbuttons{'mose'};
    }
    $r->print('<br /><table width="100%" cellpadding="0" cellspacing="0" border="0">');
    &topic_bar($r,$tabcol,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}[$$idx{fullname}].
                          '&nbsp;('.$user.')</li>');
            }
            $r->print('</ul></td><tr><td colspan="4">&nbsp;</td></tr>');
            $exp_or_del += @{$$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}[$$idx{fullname}].
                          '&nbsp;('.$user.')</li>');
            }
            $r->print('</ul></td><tr><td colspan="4">&nbsp;</td></tr>');
            $exp_or_del += @{$$memchg{'expire'}};
        }
    }
    if (!$exp_or_del) {
        $r->print('<tr><td>&nbsp;</td><td colspan="3">'.$lt{'nome'}.
                  '</td></tr><tr><td colspan="4">&nbsp;</td></tr>');
    }
    
    &topic_bar($r,$tabcol,4,&mt('Group member privileges'));

    my $numchgs = &member_privileges_form($r,$tabcol,$action,$formname,$tools,
                                          $toolprivs,$fixedprivs,$userdata,
                                          $usertools,$idx,$memchg,$states,
                                          $stored,$rowColor1,$rowColor2);
    $r->print('</td></tr><tr><td colspan="4">&nbsp;</td></tr>');
    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);
    }
    $r->print('</table>');
    return;
}

sub add_members_form {
    my ($r,$tabcol,$action,$formname,$page,$startdate,$enddate,$groupname,
        $description,$granularity,$sectioncount,$tools,$functions,$stored,
        $states,$navbuttons,$rowColor1,$rowColor2) = @_; 
    $r->print(' <br />
<table width="100%" cellpadding="0" cellspacing="0" border="0">
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
');
    my @available = ();
    my @unavailable = ();
    &check_tools($functions,$tools,\@available,\@unavailable);
    &print_current_settings($r,$action,$tabcol,$rowColor1,$rowColor2,
                            $functions,$startdate,$enddate,$groupname,
                            $description,$granularity,\@available,\@unavailable);
    $r->print('
   </td>
  </tr>
  <tr>
   <td colspan="4">&nbsp;</td>
  </tr>');

    &membership_options($r,$action,$formname,$tabcol,$sectioncount,1);
    my $nexttext = $$navbuttons{'gtns'};
    my $prevtext = $$navbuttons{'gtpp'};
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    $r->print('
 </table>');
    return;
}

sub choose_privs_form {
    my ($r,$cdom,$cnum,$tabcol,$action,$formname,$page,$startdate,$enddate,
       $tools,$functions,$toolprivs,$fixedprivs,$userdata,$usertools,$idx,
       $states,$stored,$sectioncount,$navbuttons,$rowColor1,$rowColor2) = @_;

    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'};
    }

    $r->print('<br /><table width="100%" cellpadding="0" cellspacing="0" border="0">');
    &topic_bar($r,$tabcol,6,&mt('Group member privileges'));

    &member_privileges_form($r,$tabcol,$action,$formname,$tools,$toolprivs,
                            $fixedprivs,$userdata,$usertools,$idx,undef,
                            $states,$stored,$rowColor1,$rowColor2);

    $r->print('</td></tr><tr><td colspan="4">&nbsp;</td></tr>');
    if ($action eq 'create') {
        if (keys(%{$sectioncount}) > 0) {
            my $img1 = 7;
            my $img2 = 8;
            &mapping_options($r,$action,$formname,$page,$tabcol,$sectioncount,
                             $states,$stored,$navbuttons,$img1,$img2,
                             $rowColor1,$rowColor2);
        }
    }
    my $prevtext = $$navbuttons{'gtps'};
    &display_navbuttons($r,$formname,$$states{$action}[$page-1],$prevtext,
                        $$states{$action}[$page+1],$nexttext);
    $r->print('</table>');
    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 ($r,$tabcol,$action,$formname,$tools,$toolprivs,$fixedprivs,$userdata,
        $usertools,$idx,$memchg,$states,$stored,$rowColor1,$rowColor2) = @_;
    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 group members will receive the same privileges.',
            'asno' => 'As no group members are being added, '.
                      'there are no specific user privileges to set.',
            'asng' => 'As no group tools will be made available to users, '.
                      'there are no specific user privileges to set.',
            'nogm' => 'No group 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) {
            $r->print('<tr><td>&nbsp;</td><td colspan="3">'.$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('
 <tr>
  <td>&nbsp;</td>
  <td colspan="3">
   <table border="0" cellspacing="2" cellpadding="2" border="0">
    <tr>
');
                    foreach my $tool (@{$tools}) {
                        if (@{$showboxes{$tool}} > 0) {
                            $r->print('<td valign="top">');
                            $r->print('<table class="thinborder"><tr bgcolor="'.
                                      $tabcol.'"><th colspan="'.$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></td></tr>');
                    $r->print('<tr><td colspan="4">&nbsp;</td></tr>');
                }
                $r->print('<tr><td>&nbsp;</td><td colspan="3">');
                $r->print(&Apache::lonhtmlcommon::start_pick_box());
                $r->print(<<"END");
   <tr bgcolor="$tabcol">
    <th><b>$lt{'full'}</th>
    <th><b>$lt{'user'}</th>
    <th>$lt{'doma'}</th>
    <th colspan="$numtools">$lt{'addp'}</th>
  </tr>
END
                &member_privs_entries($r,$tabcol,$rowColor1,$rowColor2,
                                      $usertools,$toolprivs,$fixedprivs,
                                      $userdata,$idx,\@showtools,\@defprivs,
                                      \@excluded);
                $r->print('</td>');
                $r->print(&Apache::lonhtmlcommon::end_pick_box());
                $r->print('</td></tr>
 <tr>
  <td colspan="4">&nbsp;</td>
 </tr>
');
            } else {
                $r->print('<tr><td>&nbsp;</td><td colspan="3">'.$lt{'forf'}.
                          '<br />');
                &display_defprivs($r,$tabcol,$rowColor1,$rowColor2,$tools,
                            $toolprivs,\@defprivs);
            }
        } else {
            if (keys(%{$usertools}) > 0) {
                $r->print('<tr><td>&nbsp;</td><td colspan="3">'.$lt{'algr'}.
                          '<br /><br />');
                &display_defprivs($r,$tabcol,$rowColor1,$rowColor2,$tools,
                            $toolprivs,\@defprivs);
            } else {
                $r->print('<tr><td>&nbsp;</td><td colspan="3">'.$lt{'asno'}.
                          '<br />');
            }
        }
    } else {
        $r->print('<tr><td>&nbsp;</td><td colspan="3">'.$lt{'asng'});
    }
    return $numchgs;
}

sub process_request {
    my ($r,$cdom,$cnum,$tabcol,$action,$state,$page,$groupname,$description,
        $specificity,$userdata,$startdate,$enddate,$tools,$functions,$toolprivs,
        $usertools,$idx,$types,$roles,$sections,$states,$navbuttons,$memchg,
        $sectioncount,$stored,$rowColor1,$rowColor2) = @_;

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

    my $earlyout = &validate_groupname($groupname,$action,$cdom,$cnum);
    if ($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,$stored); 
    }
    if (($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);
    }
    return;
}

sub write_group_data {
    my ($r,$cdom,$cnum,$action,$state,$groupname,$description,$startdate,
        $enddate,$specificity,$functions,$tools,$sectioncount,$roles,$types,
        $sections,$defprivs,$stored) = @_;
    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');
    my @mult_attributes = ('roles','types','sectionpick','defpriv');

    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'},
                   );
    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 $put_result = &create_homepage($cdom,$cnum,$groupname,
                                              \%groupinfo,$tools);
            $r->print('Group '.$groupname.' was created.<br />');
        } else {
            $r->print('Group '.$groupname.' was updated.<br />');
        }
    } else {
        my %actiontype = (
                          'create' => 'creating',
                          'modify' => 'modifying',
                         );
        &Apache::lonnet::logthis('Failed to store group '.$groupname.
                                 'in course: '.$cnum.' in domain: '.$cdom);
        $r->print(&mt('An error occurred when [_1] the new group. '.
                      'Please try again.',$actiontype{$action}));
    }
    return $result;
}

sub process_membership {
    my ($r,$cdom,$cnum,$action,$state,$groupname,$tools,$enddate,$startdate,
        $userdata,$idx,$toolprivs,$usertools,$specificity,$defprivs,$memchg)=@_;
    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 ($curr_privs{$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};
            }
            $type = 'modified';
            if (@activate > 0) {
                if (grep/^$user$/,@activate) {
                    $start = $now;
                    $end = $enddate;
                    $type = 'activated';
                }
            }
            if (@reenable > 0) {
                if (grep/^$user$/,@reenable) {
                    $start = $startdate;
                    $end = $enddate;
                    $type = 'reenabled';
                }
            }
        } 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('Group membership list updated.'));
    } else {
        $r->print('<br />'.&mt('An error occurred while updating the group membership list -').$roster_result.'<br />');
    }
    return;
}

sub mapping_options {
    my ($r,$action,$formname,$page,$tabcol,$sectioncount,$states,$stored,
        $navbuttons,$img1,$img2,$rowColor1,$rowColor2) = @_;
    my %lt = &Apache::lonlocal::texthash(
        'auto' => 'Settings for automatic group enrollment',
        'gmma' => 'Group membership mapping to specific sections/roles',
        'endi' => 'Enable/disable automatic group enrollment for '.
                          'users in specified roles and sections',
        'adds'  => 'If automatic group enrollment is enabled, when a user is assigned a course-wide or section-specific role, he/she will automatically be added as a member of the group, with start and end access dates defined by the default dates set for the group, unless he/she is already a group member, with access dates that permit either current or future group access.',
        'drops'  => "If automatic group disenrollment is enabled, when a user's role is expired, access to the group will be terminated unless the user continues to have other course-wide or section-specific active or future roles which receive automatic membership in the group.",
        'pirs' => 'Pick roles and sections for automatic group enrollment',
        'curr' => 'Currently set to',
        'on' => 'on',
        'off' => 'off',
        'auad' => 'Automatically enable group membership when roles are added?',
        'auex' => 'Automatically expire group membership when roles are removed?',
        'mapr' => 'Mapping of roles and sections affected by automatic group enrollment/disenrollment follows scheme chosen below.',
    );
    &automapping($r,$action,$tabcol,$stored,\%lt,$img1);
    $r->print('
   <tr>
    <td colspan="4">&nbsp;</td>
   </tr>');
    &mapping_settings($r,$tabcol,$rowColor1,$rowColor2,$sectioncount,\%lt,
                                                       $stored,$img2);
    return;
}

sub automapping {
    my ($r,$action,$tabcol,$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($r,$tabcol,$image,$$lt{'endi'});
    $r->print('
  <tr>
   <td>&nbsp;</td>
   <td colspan="3">
    <b>'.$$lt{'gmma'}.':</b><br />'.$$lt{'adds'}.'<br />'.$$lt{'drops'}.'<br />
   </td>
  </tr>
  <tr>
   <td colspan="4">&nbsp;</td>
  </tr>
  <tr>
   <td>&nbsp;</td>
   <td colspan="3">
   <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>'.$$lt{$add}.'</b>)');
    }
    $r->print('
    </nobr>
   </td>
  </tr>
  <tr>
   <td>&nbsp;</td>
   <td colspan="3">
    <nobr>'.$$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>
   </td>
  </tr>
  <tr>
   <td colspan="4">&nbsp;</td>
  </tr>
  <tr>
   <td>&nbsp;</td>
   <td colspan="3">'.$$lt{'mapr'}.'
   </td>
  </tr>
');
}

sub mapping_settings {
    my ($r,$tabcol,$rowColor1,$rowColor2,$sectioncount,$lt,$stored,$image) = @_;
    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,$tabcol,$image,$$lt{'pirs'});
    $r->print('
   <tr>
    <td>&nbsp;</td>
    <td colspan="3">
');
    my @roles = &standard_roles();
    my %customroles = &my_custom_roles();
    $r->print(&Apache::lonhtmlcommon::start_pick_box());
    $r->print('
                <tr bgcolor="'.$tabcol.'">
                 <th>'.&mt('Active?').'</th>
                 <th>'.&mt('Role').'</th>');
    if (@sections > 0) {
        $r->print('<th>'.&mt('Sections').'</th></tr>'."\n");
    }
    my $rowNum = 0;
    my $rowColor;
    foreach my $role (@roles) {
        my $plrole=&Apache::lonnet::plaintext($role);
        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>';
            }
        }
        if ($rowNum %2 == 1) {
            $rowColor = $rowColor1;
        } else {
            $rowColor = $rowColor2;
        }
        $r->print('<tr bgcolor="'.$rowColor.'"><td><input type="checkbox" '.
                  'name="autorole" value="'.$role.'"></td><td>'.$plrole.
                  '</td>'.$sections_sel.'</tr>');
        $rowNum ++;
    }
    foreach my $role (sort(keys(%customroles))) {
        my $sections_sel;
        if (@sections > 0) {
            $sections_sel = '<td>'.&sections_selection(\@sections,'sec_'.$role).
                                                                        '</td>';
        }
        if ($rowNum %2 == 1) {
            $rowColor = $rowColor1;
        } else {
            $rowColor = $rowColor2;
        }
        $r->print('<tr bgcolor="'.$rowColor.'"><td><input type="checkbox" '.
                  'value="'.$role.'"></td><td>'.$role.'</td>'.
                  $sections_sel.'</tr>');
        $rowNum ++;
    }
    $r->print(&Apache::lonhtmlcommon::end_pick_box());
    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) = @_;
    my @menu =
        (
          { text => 'Modify default group 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 group',
            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 ($r,$tabcol,$rowColor1,$rowColor2,$usertools,$toolprivs,
        $fixedprivs,$userdata,$idx,$showtools,$defprivs,$excluded) = @_;
    my $rowColor;
    my $rowNum = 0;
    foreach my $user (sort(keys(%{$usertools}))) {
        if (defined($excluded)) {
            if (ref($excluded) eq 'ARRAY') {
                if (grep/^$user$/,@{$excluded}) {
                    next;
                }
            }
        }
        my ($uname,$udom) = split(/:/,$user);
        if ($rowNum %2 == 1) {
            $rowColor = $rowColor1;
        } else {
            $rowColor = $rowColor2;
        }
        $r->print('<tr bgcolor="'.$rowColor.'">
                <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($$usertools{$user}{$tool})) {
                $r->print('<td valign="top"><table><tr bgcolor="'.$tabcol.'"><td colspan="2" align="center"><b>'.$tool.'</b></td></tr>');
                my $privcount = 0;
                my $fixed = '';
                my $dynamic = '';
                foreach my $priv (sort(keys(%{$$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 {
                $r->print('<td valign="top"><table width="100%"><tr bgcolor="'.$tabcol.'"><td colspan="2" align="center"><b>'.$tool.'</b></td></tr><tr><td>&nbsp;</td></tr><tr><td>&nbsp;</td></tr></table></td>');
            }
        }
        $rowNum ++;
    }
}

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" />
                                                no ending date</label></nobr>';
    my $start_table = '';
    $start_table .= "<table>\n";
    $start_table .= '<tr><td align="right">Default starting date for 
                                           member access</td>'.
        '<td>'.$startform.'</td>'.
        '<td>&nbsp;</td>'."</tr>\n";
    $start_table .= "</table>";
    my $end_table = '';
    $end_table .= "<table>\n";
    $end_table .= '<tr><td align="right">Default ending date for 
                                         member access</td>'.
        '<td>'.$endform.'</td>'.
        '<td>'.$perpetual.'</td>'."</tr>\n";
    $end_table .= "</table>\n";
    return ($start_table, $end_table);
}

sub create_homepage {
    my ($cdom,$cnum,$name,$groupinfo,$tools) = @_;
    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' => 'Group: '.$name,
                     'abb_links' => $functionality,
                     'bbb_content' => $content,
                     'ccc_webreferences' => '',
                     'uploaded.lastmodified' => time,
                   );
   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) = @_;
    my %sectioncount = &Apache::loncommon::get_sections($cdom,$cnum);
    my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);

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

    my $exitmsg = '<b>'.$lt{'igna'}.'</b><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 group').
	    $lt{'inth'}.'<br />'.$lt{'grna'};

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

sub topic_bar {
    my ($r,$tabcol,$imgnum,$title) = @_;
    $r->print('
 <tr bgcolor="'.$tabcol.'">
  <td>&nbsp;</td>
  <td valign="middle" align="left">
   <nobr>
    <img src="/res/adm/pages/bl_step'.$imgnum.'.gif" valign="middle">&nbsp;
   </nobr>
  </td>
  <th align="left"><nobr>'.$title.'<nobr>
  </th>
  <td width="100%">&nbsp;</td>
 </tr>
 <tr>
  <td colspan="4">&nbsp;</td>
 </tr>
');
    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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