--- loncom/interface/lonuserutils.pm	2010/08/10 04:00:16	1.109.2.4
+++ loncom/interface/lonuserutils.pm	2010/05/22 01:11:53	1.119
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Utility functions for managing LON-CAPA user accounts
 #
-# $Id: lonuserutils.pm,v 1.109.2.4 2010/08/10 04:00:16 raeburn Exp $
+# $Id: lonuserutils.pm,v 1.119 2010/05/22 01:11:53 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,7 +36,6 @@ use Apache::loncommon();
 use Apache::lonhtmlcommon;
 use Apache::lonlocal;
 use Apache::longroup;
-use Apache::lonnavmaps;
 use LONCAPA qw(:DEFAULT :match);
 
 ###############################################################
@@ -1186,10 +1185,8 @@ sub default_role_selector {
                     'exs'  => "Existing sections",
                     'new'  => "New section",
                   );
-    $options = '<select name="defaultrole">'."\n";
-    unless (($context eq 'course') && (&Apache::loncommon::needs_gci_custom())) {
-        $options .= ' <option value="">'.&mt('Please select').'</option>'."\n";
-    }
+    $options = '<select name="defaultrole">'."\n".
+               ' <option value="">'.&mt('Please select').'</option>'."\n"; 
     if ($context eq 'course') {
         $options .= &default_course_roles($context,$checkpriv,$crstype,%customroles);
     } elsif ($context eq 'author') {
@@ -1451,8 +1448,12 @@ sub print_userlist {
     }
     if (!(($context eq 'domain') && 
           (($env{'form.roletype'} eq 'course') || ($env{'form.roletype'} eq 'community')))) {
-        $r->print('&nbsp;'.&list_submit_button(&mt('Update Display')).
-                  "\n</p>\n");
+        $r->print(
+            "\n</p>\n"
+           .'<p>'
+           .&list_submit_button(&mt('Update Display'))
+           ."</p>\n"
+        );
     }
     my ($indexhash,$keylist) = &make_keylist_array();
     my (%userlist,%userinfo,$clearcoursepick);
@@ -1691,7 +1692,7 @@ sub role_filter {
         $role_select .= '</select>';
         $output = '<label><span class="LC_nobreak">'
                  .&mt('Role: [_1]',$role_select)
-                 .'</span></label>';
+                 .'</span></label> ';
     }
     return $output;
 }
@@ -1731,7 +1732,7 @@ sub section_group_filter {
         }
         if (@options > 0) {
             my $currsel;
-            $markup = '<select name="'.$name{$item}.'" />'."\n";
+            $markup = '<select name="'.$name{$item}.'">'."\n";
             foreach my $option ('all','none',@options) { 
                 $currsel = '';
                 if ($env{'form.'.$name{$item}} eq $option) {
@@ -1746,7 +1747,9 @@ sub section_group_filter {
                 $markup .= '</option>'."\n";
             }
             $markup .= '</select>'."\n";
-            $output .= ('&nbsp;'x3).'<label>'.$title{$item}.': '.$markup.'</label>';
+            $output .= ('&nbsp;'x3).'<span class="LC_nobreak">'
+                      .'<label>'.$title{$item}.': '.$markup.'</label>'
+                      .'</span> ';
         }
     }
     return $output;
@@ -2096,7 +2099,6 @@ sub process_date_info {
 
 sub show_users_list {
     my ($r,$context,$mode,$permission,$statusmode,$userlist,$keylist,$formname)=@_;
-    my $custommenu; 
     if ($formname eq '') {
         $formname = 'studentform';
     }
@@ -2121,17 +2123,11 @@ sub show_users_list {
         $sortby = 'username';
     }
     my $setting = $env{'form.roletype'};
-    my ($cid,$cdom,$cnum,$classgroups,$displayphotos,$displayclickers,$crstype,
-        $clickersupport,$displaygroups);
+    my ($cid,$cdom,$cnum,$classgroups,$displayphotos,$displayclickers,$crstype);
     if ($context eq 'course') {
         $cid = $env{'request.course.id'};
         $crstype = &Apache::loncommon::course_type();
         ($cnum,$cdom) = &get_course_identity($cid);
-        $custommenu = &Apache::loncommon::needs_gci_custom();
-        unless ($custommenu) {
-            $clickersupport = 1;
-            $displaygroups = 1;
-        }
         ($classgroups) = &Apache::loncoursedata::get_group_memberships(
                                      $userlist,$keylist,$cdom,$cnum);
         if ($mode eq 'autoenroll') {
@@ -2252,8 +2248,6 @@ END
                        'role'       => "role",
                        'type'       => "enroll type/action",
                        'email'      => "e-mail address",
-                       'lastlogin'  => "last login",
-                       'submissions' => "test status",
                        'photo'      => "photo",
                        'extent'     => "extent",
                        'pr'         => "Proceed",
@@ -2300,19 +2294,9 @@ END
             push(@cols,'status');
         }
         if ($context eq 'course') {
-            if ($displaygroups) {
-                push(@cols,'groups');
-            }
+            push(@cols,'groups');
         }
         push(@cols,'email');
-        if ($context eq 'course') {
-            if ($custommenu) {
-                push(@cols,'lastlogin');
-                if (($env{'form.showrole'} eq 'Any') || ($env{'form.showrole'} eq 'st')) {
-                    push(@cols,'submissions');
-                }
-            }
-        }
     }
 
     my $rolefilter = $env{'form.showrole'};
@@ -2419,7 +2403,7 @@ END
             if ($env{'form.userwin'}) {
                 $checkwin = ' checked="checked"';
             }
-            $output .= '</td><td valign="top"><span class="LC_nobreak"><input type="checkbox" name="userwin" value="1"'.$checkwin.' />'.$lt{'owin'}.'</span></td></tr></table></fieldset></div>';
+            $output .= '</td><td valign="top"  style="border-left: 1px solid;"><span class="LC_nobreak"><input type="checkbox" name="userwin" value="1"'.$checkwin.' />'.$lt{'owin'}.'</span></td></tr></table></fieldset></div>';
         }
         $output .= "\n".'<div class="LC_clear_float_footer">&nbsp;</div>'."\n".
                   &Apache::loncommon::start_data_table().
@@ -2435,32 +2419,27 @@ END
             }
         }
         foreach my $item (@cols) {
-            if (grep(/^\Q$item\E$/,@sortable)) {
-                $output .= "<th><a href=\"javascript:document.$formname.sortby.value='$item';document.$formname.submit();\">$lt{$item}</a></th>\n";
-            } else {
-                $output .= "<th>$lt{$item}</th>\n";
-            }
+            $output .= "<th><a href=\"javascript:document.$formname.sortby.value='$item';document.$formname.submit();\">$lt{$item}</a></th>\n";
         }
         my %role_types = &role_type_names();
         if ($context eq 'course' && $mode ne 'autoenroll') {
             if ($env{'form.showrole'} eq 'st' || $env{'form.showrole'} eq 'Any') {
                 # Clicker display on or off?
-                if ($clickersupport) {
-                    my %clicker_options = (
-                                            'on' => 'Show',
-                                            'off' => 'Hide',
-                                          );
-                    my $clickerchg = 'on';
-                    if ($displayclickers eq 'on') {
-                        $clickerchg = 'off';
-                    }
-                    $output .= '    <th>'."\n".'     '
-                       .&mt('[_1]'.$clicker_options{$clickerchg}.'[_2] clicker id'
+                my %clicker_options = (
+                                        'on' => 'Show',
+                                        'off' => 'Hide',
+                                      );
+                my $clickerchg = 'on';
+                if ($displayclickers eq 'on') {
+                    $clickerchg = 'off';
+                }
+                $output .= '    <th>'."\n".'     '
+                        .&mt('[_1]'.$clicker_options{$clickerchg}.'[_2] clicker id'
                             ,'<a href="javascript:document.'.$formname.'.displayclickers.value='
                              ."'".$clickerchg."'".';document.'.$formname.'.submit();">'
                             ,'</a>')
                         ."\n".'    </th>'."\n";
-                }
+
                 # Photo display on or off?
                 if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
                     my %photo_options = &Apache::lonlocal::texthash(
@@ -2499,18 +2478,14 @@ END
             $CSVfile = undef;
         }
         #
-        if ($clickersupport) {
-            push @cols,'clicker';
-        }
+        push @cols,'clicker';
         # Write headers and data to file
         print $CSVfile '"'.$results_description.'"'."\n"; 
         print $CSVfile '"'.join('","',map {
             &Apache::loncommon::csv_translate($lt{$_})
             } (@cols))."\"\n";
     } elsif ($mode eq 'excel') {
-        if ($clickersupport) {
-            push @cols,'clicker';
-        }
+        push @cols,'clicker';
         # Create the excel spreadsheet
         ($excel_workbook,$excel_filename,$format) =
             &Apache::loncommon::create_workbook($r);
@@ -2546,40 +2521,6 @@ END
                                                 Future  => 'Future',
                                                 Expired => 'Expired',
                                                );
-    # If this is for a single course get last course "log-in" and submissions.
-    my (%crslogins,%stusubmissions,%elapsed,$numparts,%nummultipart,$multipart);
-    my $now = time;
-    if ($context eq 'course') {
-        if ($custommenu) {
-            %crslogins=&Apache::lonnet::dump('nohist_crslastlogin',$cdom,$cnum);
-            %stusubmissions=&Apache::lonnet::dump('nohist_submissiontracker',$cdom,$cnum);
-            %elapsed = &Apache::lonlocal::texthash(    
-                                         -1 => 'more than a month ago',
-                                    2592000 => 'within last 30 days',
-                                     604800 => 'within last 7 days',
-                                      86400 => 'within last 24 hours',
-                                   );
-            my $navmap = Apache::lonnavmaps::navmap->new();
-            if (defined($navmap)) {
-                my @allres=$navmap->retrieveResources('/uploaded/'.$cdom.'/'.$cnum.'/default_1261144274.sequence',sub { $_[0]->is_problem() },0);
-                foreach my $resource (@allres) {
-                    my @parts = $resource->parts();
-                    my $count = scalar(@parts);
-                    if ($count > 1) {
-                        $nummultipart{$count} ++;
-                    }
-                    $numparts += $count;
-                }
-                if (keys(%nummultipart) > 0) {
-                   $multipart = '<br />'.'contains';
-                   foreach my $key (sort {$a <=> $b} keys(%nummultipart)) {
-                       $multipart .= " nummultipart{$key} multipart questions (with $key parts)";
-                   }
-                }
-            }
-        }
-    }
-
     # Get groups, role, permanent e-mail so we can sort on them if
     # necessary.
     foreach my $user (keys(%{$userlist})) {
@@ -2726,34 +2667,6 @@ END
         } else {
             $in{'end'} = &Apache::lonlocal::locallocaltime($in{'end'});
         }
-        if ($context eq 'course') {
-            if ($custommenu) {
-                my $lastlogin = $crslogins{$in{'username'}.':'.$in{'domain'}.':'.$in{'section'}.':'.$role};
-                if ($lastlogin ne '') {
-                    my $sincelogin = $now - $lastlogin;
-                    if ($sincelogin < 86400) {
-                        $in{'lastlogin'} = $elapsed{'86400'};
-                    } elsif ($sincelogin < 604800) {
-                        $in{'lastlogin'} = $elapsed{'604800'};
-                    } elsif ($sincelogin < 2592000 ) {
-                        $in{'lastlogin'} = $elapsed{'2592000'};
-                    } else {
-                        $in{'lastlogin'} = $elapsed{'-1'};
-                    }
-                }
-            }
-            if ($role eq 'st') {
-                my $numsub = $stusubmissions{$in{'username'}.':'.$in{'domain'}."\0attempts"} + 
-                             $stusubmissions{$in{'username'}.':'.$in{'domain'}."\0pilotsubs"};
-                if (!$numsub) {
-                    $in{'submissions'} = 'not attempted';
-                } elsif ($numsub < $numparts) {
-                    $in{'submissions'} = 'incomplete ('.$numsub.'/'.$numparts.')';
-                } else {
-                    $in{'submissions'} = 'completed';
-                }
-            }
-        }
         if ($mode eq 'view' || $mode eq 'html' || $mode eq 'autoenroll' || $mode eq 'pickauthor') {
             $r->print(&Apache::loncommon::start_data_table_row());
             my $checkval;
@@ -2827,27 +2740,19 @@ END
                         $showitem = $ltstatus{$in{$item}};
                     }
                     $r->print('<td>'.$showitem.'</td>'."\n");
-                } elsif ($item eq 'submissions') {
-                    if ($in{$item} =~ /^incomplete/) { 
-                        $r->print('<td>'.$in{$item}.$multipart.'</td>');
-                    } else {
-                        $r->print('<td>'.$in{$item}.'</td>'."\n");
-                    }
                 } else {
                     $r->print('<td>'.$in{$item}.'</td>'."\n");
                 }
             }
             if (($context eq 'course') && ($mode ne 'autoenroll')) {
                 if ($env{'form.showrole'} eq 'st' || $env{'form.showrole'} eq 'Any') {
-                    if ($clickersupport) {
-                        if ($displayclickers eq 'on') {
-                            my $clickers =
+                    if ($displayclickers eq 'on') {
+                        my $clickers =
                    (&Apache::lonnet::userenvironment($in{'domain'},$in{'username'},'clickers'))[1];
-                            if ($clickers!~/\w/) { $clickers='-'; }
-                            $r->print('<td>'.$clickers.'</td>');
-                        } else {
-                            $r->print('    <td>&nbsp;</td>  ');
-                        }
+                        if ($clickers!~/\w/) { $clickers='-'; }
+                        $r->print('<td>'.$clickers.'</td>');
+                    } else {
+                        $r->print('    <td>&nbsp;</td>  ');
                     }
                     if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
                         if ($displayphotos eq 'on' && $role eq 'st' && $in{'photo'} ne '') {
@@ -3038,7 +2943,7 @@ sub print_username_link {
         $output = $in->{'username'};
     } else {
         $output = '<a href="javascript:username_display_launch('.
-                  "'$in->{'username'}','$in->{'domain'}'".')" />'.
+                  "'$in->{'username'}','$in->{'domain'}'".')">'.
                   $in->{'username'}.'</a>';
     }
     return $output;
@@ -3268,9 +3173,9 @@ ENDJS
     my %lt = &Apache::lonlocal::texthash (
                  chac => 'Access dates to apply for selected users',
                  chse => 'Changes in section affiliation to apply to selected users',
-                 fors => 'For student roles changing the section, will result in a section switch as students may only be in one section of a course at a time.',
-                 forn => 'For a role in a course that is not a student role, a user may have roles in more than one section of a course at a time.',
-                 reta => "Retain each user's current section affiliations?", 
+                 fors => 'For student roles, changing the section will result in a section switch as students may only be in one section of a course at a time.',
+                 forn => 'For a course role that is not "student", users may have roles in more than one section at a time.',
+                 reta => "Retain each user's current section affiliations?",
                  dnap => '(Does not apply to student roles).',
             );
     my ($date_items,$headertext);
@@ -3288,14 +3193,13 @@ ENDJS
                                           $permission,$crstype);
     }
     $output .= '<h3>'.$headertext.'</h3>'.
-               '<form name="'.$formname.'" method="post">'."\n".
+               '<form name="'.$formname.'" method="post" action="">'."\n".
                 $date_items;
     if ($context eq 'course' && $env{'form.bulkaction'} eq 'chgsec') {
         my ($cnum,$cdom) = &get_course_identity();
-        my $crstype = &Apache::loncommon::course_type();
         if ($crstype eq 'Community') {
-            $lt{'fors'} = &mt('For member roles changing the section, will result in a section switch as members may only be in one section of a community at a time.');
-            $lt{'forn'} = &mt('For a role in a community that is not a member role, a user may have roles in more than one section of a community at a time.');
+            $lt{'fors'} = &mt('For member roles, changing the section will result in a section switch, as members may only be in one section of a community at a time.');
+            $lt{'forn'} = &mt('For a community role that is not "member", users may have roles in more than one section at a time.');
             $lt{'dnap'} = &mt('(Does not apply to member roles).'); 
         }
         my $info;
@@ -3336,7 +3240,7 @@ sub section_picker {
     my ($cdom,$cnum,$role,$rowtitle,$permission,$context,$mode,$crstype) = @_;
     my %sections_count = &Apache::loncommon::get_sections($cdom,$cnum);
     my $sections_select .= &course_sections(\%sections_count,$role);
-    my $secbox = '<p>'.&Apache::lonhtmlcommon::start_pick_box()."\n";
+    my $secbox = '<div>'.&Apache::lonhtmlcommon::start_pick_box()."\n";
     if ($mode eq 'upload') {
         my ($options,$cb_script,$coursepick) =
             &default_role_selector($context,1,$crstype);
@@ -3349,7 +3253,7 @@ sub section_picker {
                    '<td align="center">'.&mt('Existing sections')."\n".
                    '<br />'.$sections_select.'</td><td align="center">'.
                    &mt('New section').'<br />'."\n".
-                   '<input type="text" name="newsec" size="15" />'."\n".
+                   '<input type="text" name="newsec" size="15" value="" />'."\n".
                    '<input type="hidden" name="sections" value="" />'."\n".
                    '</td></tr></table>'."\n";
     } else {
@@ -3358,7 +3262,7 @@ sub section_picker {
                    $env{'request.course.sec'};
     }
     $secbox .= &Apache::lonhtmlcommon::row_closure(1)."\n".
-               &Apache::lonhtmlcommon::end_pick_box().'</p>';
+               &Apache::lonhtmlcommon::end_pick_box().'</div>';
     return $secbox;
 }
 
@@ -3499,7 +3403,7 @@ sub results_header_row {
                 if ($rolefilter eq 'Any') {
                     $description .= &mt('All users with co-author roles in domain',$showfilter);
                 } else {
-                    $description .= &mt('All co-authors in domain  with [_1] roles',$rolefilter);
+                    $description .= &mt('All co-authors in domain with [_1] roles',$rolefilter);
                 }
             }
         } elsif (($env{'form.roletype'} eq 'course') || 
@@ -3563,10 +3467,6 @@ sub show_drop_list {
     my ($r,$classlist,$nosort,$permission,$crstype) = @_;
     my $cid = $env{'request.course.id'};
     my ($cnum,$cdom) = &get_course_identity($cid);
-    my $displaygroups;
-    unless (&Apache::loncommon::needs_gci_custom()) {
-        $displaygroups = 1;
-    }
     if (! exists($env{'form.sortby'})) {
         &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                                 ['sortby']);
@@ -3644,10 +3544,8 @@ END
     <th>$lt{'sec'}</th>
     <th>$lt{'start'}</th>
     <th>$lt{'end'}</th>
+    <th>$lt{'groups'}</th>
 END
-        if ($displaygroups) {
-            $r->print("    <th>$lt{'groups'}</th>\n");
-        }
         $r->print(&Apache::loncommon::end_data_table_header_row());
     } else  {
         $r->print(&Apache::loncommon::start_data_table().
@@ -3668,13 +3566,10 @@ END
        <a href="/adm/createuser?action=$action&sortby=start">$lt{'start'}</a>
     </th><th>
        <a href="/adm/createuser?action=$action&sortby=end">$lt{'end'}</a>
+    </th><th>
+       <a href="/adm/createuser?action=$action&sortby=groups">$lt{'groups'}</a>
     </th>
 END
-       if ($displaygroups) {
-           $r->print("<th>
-       <a href=\"/adm/createuser?action=$action&sortby=groups\">$lt{'groups'}</a>
-    </th>\n");
-        }
         $r->print(&Apache::loncommon::end_data_table_header_row());
     }
     #
@@ -3727,10 +3622,8 @@ END
     <td>$section</td>
     <td>$start $startitem</td>
     <td>$end</td>
+    <td>$active_groups</td>
 END
-        if ($displaygroups) {
-            $r->print("    <td>$active_groups</td>\n");
-        }
         $r->print(&Apache::loncommon::end_data_table_row());
     }
     $r->print(&Apache::loncommon::end_data_table().'<br />');
@@ -3767,7 +3660,7 @@ sub print_first_users_upload_form {
     $str .= '<input type="hidden" name="action" value="upload" />';
     $str .= '<input type="hidden" name="state"  value="got_file" />';
 
-    $str .= '<h3>'.&mt('Upload a file containing information about users').'</h3>'."\n";
+    $str .= '<h2>'.&mt('Upload a file containing information about users').'</h2>'."\n";
 
     # Excel and CSV Help
     $str .= '<div class="LC_left_float">'
@@ -3778,8 +3671,15 @@ sub print_first_users_upload_form {
                 &mt("How do I create a CSV file from a spreadsheet"))
            .'</div><br clear="all" />'."\n";
     $str .= &Apache::lonhtmlcommon::start_pick_box()
-           .&Apache::lonhtmlcommon::row_title(&mt('File'))
-           .&Apache::loncommon::upfile_select_html()
+           .&Apache::lonhtmlcommon::row_title(&mt('File'));
+    if (&Apache::lonlocal::current_language() ne 'en') {
+        if ($context eq 'course') { 
+            $str .= '<p class="LC_info">'."\n"
+                   .&mt('Please upload an UTF8 encoded file to ensure a correct character encoding in your classlist.')."\n"
+                   .'</p>'."\n";
+        }
+    }
+    $str .= &Apache::loncommon::upfile_select_html()
            .&Apache::lonhtmlcommon::row_closure()
            .&Apache::lonhtmlcommon::row_title(
                 '<label for="noFirstLine">'
@@ -4492,10 +4392,9 @@ sub print_drop_menu {
 # ================================================================== Phase four
 
 sub update_user_list {
-    my ($r,$context,$setting,$choice) = @_;
+    my ($r,$context,$setting,$choice,$crstype) = @_;
     my $now = time;
     my $count=0;
-    my $crstype;
     if ($context eq 'course') {
         $crstype = &Apache::loncommon::course_type();
     }
@@ -4510,7 +4409,7 @@ sub update_user_list {
                                    'reenable' => 'Re-enabled',
                                    'activate' => 'Activated',
                                    'chgdates' => 'Changed Access Dates for',
-                                   'chgsec'   => 'Changed section for',
+                                   'chgsec'   => 'Changed section(s) for',
                                    'drop'     => 'Dropped',
                                  },
                         error => {'revoke'    => 'revoking',
@@ -4527,8 +4426,9 @@ sub update_user_list {
         ($startdate,$enddate) = &get_dates_from_form();
     }
     foreach my $item (@changelist) {
-        my ($role,$uname,$udom,$cid,$sec,$scope,$result,$type,$locktype,@sections,
-            $scopestem);
+        my ($role,$uname,$udom,$cid,$sec,$scope,$result,$type,$locktype,
+            @sections,$scopestem,$singlesec,$showsecs,$warn_singlesec,
+            $nothingtodo,$keepnosection);
         if ($choice eq 'drop') {
             ($uname,$udom,$sec) = split(/:/,$item,-1);
             $role = 'st';
@@ -4627,14 +4527,23 @@ sub update_user_list {
             } elsif ($choice eq 'chgsec') {
                 my (@newsecs,$revresult,$nochg,@retained);
                 if (($role ne 'cc') && ($role ne 'co')) {
-                    @newsecs = split(/,/,$env{'form.newsecs'});
+                    my @secs = sort(split(/,/,$env{'form.newsecs'}));
+                    if (@secs) {
+                        my %curr_groups = &Apache::longroup::coursegroups();
+                        foreach my $sec (@secs) {
+                            next if (($sec =~ /\W/) || ($sec eq 'none') ||
+                            (exists($curr_groups{$sec})));
+                            push(@newsecs,$sec);
+                        }
+                    }
                 }
                 # remove existing section if not to be retained.   
-                if (!$env{'form.retainsec'}) {
+                if (!$env{'form.retainsec'} || ($role eq 'st')) {
                     if ($sec eq '') {
                         if (@newsecs == 0) {
-                            $result = &mt('No change in section assignment (none)');
+                            $result = 'ok';
                             $nochg = 1;
+                            $nothingtodo = 1;
                         } else {
                             $revresult =
                                 &Apache::lonnet::revokerole($udom,$uname,
@@ -4661,13 +4570,23 @@ sub update_user_list {
                 } else {
                     if ($sec eq '') {
                         $nochg = 1;
-                    } else { 
+                        $keepnosection = 1;
+                    } else {
                         push(@retained,$sec);
                     }
                 }
                 # add new sections
+                my (@diffs,@shownew);
+                if (@retained) {
+                    @diffs = &Apache::loncommon::compare_arrays(\@retained,\@newsecs);
+                } else {
+                    @diffs = @newsecs;
+                }
                 if (@newsecs == 0) {
-                    if (!$nochg) {
+                    if ($nochg) {
+                        $result = 'ok';
+                        $nothingtodo = 1;
+                    } else {
                         if ($role eq 'st') {
                             $result = 
                                 &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,undef,$end,$start,$type,$locktype,$cid,'',$context);
@@ -4676,22 +4595,58 @@ sub update_user_list {
                             $result = &Apache::lonnet::assignrole($udom,$uname,$newscope,$role,$end,$start,'','',$context);
                         }
                     }
+                    $showsecs = &mt('No section');
+                } elsif (@diffs == 0) {
+                    $result = 'ok';
+                    $nothingtodo = 1;
                 } else {
-                    foreach my $newsec (@newsecs) { 
+                    foreach my $newsec (@newsecs) {
                         if (!grep(/^\Q$newsec\E$/,@retained)) {
                             if ($role eq 'st') {
                                 $result = &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,$newsec,$end,$start,$type,$locktype,$cid,'',$context);
+                                if (@newsecs > 1) {
+                                    my $showsingle; 
+                                    if ($newsec eq '') {
+                                        $showsingle = &mt('No section');
+                                    } else {
+                                        $showsingle = $newsec;
+                                    }
+                                    if ($crstype eq 'Community') {
+                                        $warn_singlesec = &mt('Although more than one section was indicated, a role was only added for the first section - [_1], as each community member may only be in one section at a time.','<i>'.$showsingle.'</i>');
+                                    } else { 
+                                        $warn_singlesec = &mt('Although more than one section was indicated, a role was only added for the first section - [_1], as each student may only be in one section of a course at a time.','<i>'.$showsingle.'</i>');
+                                    }
+                                    $showsecs = $showsingle; 
+                                    last;
+                                } else {
+                                    if ($newsec eq '') {
+                                        $showsecs = &mt('No section');
+                                    } else {
+                                        $showsecs = $newsec;
+                                    }
+                                }
                             } else {
                                 my $newscope = $scopestem;
                                 if ($newsec ne '') {
                                    $newscope .= '/'.$newsec;
+                                   push(@shownew,$newsec); 
                                 }
                                 $result = &Apache::lonnet::assignrole($udom,$uname,
                                                         $newscope,$role,$end,$start);
+                                
                             }
                         }
                     }
                 }
+                unless ($role eq 'st') {
+                    unless ($showsecs) {
+                        my @tolist = sort(@shownew,@retained);
+                        if ($keepnosection) {
+                            push(@tolist,&mt('No section'));
+                        }
+                        $showsecs = join(', ',@tolist);
+                    }
+                }
             }
         }
         my $extent = $scope;
@@ -4702,13 +4657,48 @@ sub update_user_list {
             }
         }
         if ($result eq 'ok' || $result eq 'ok:') {
-            $r->print(&mt("$result_text{'ok'}{$choice} role of '[_1]' in [_2] for [_3]",
-                          $plrole,$extent,$uname.':'.$udom).'<br />');
-            $count++;
+            my $dates;
+            if (($choice eq 'chgsec') || ($choice eq 'chgdates')) {
+                $dates = &dates_feedback($start,$end,$now);
+            }
+            if ($choice eq 'chgsec') {
+                if ($nothingtodo) {
+                    $r->print(&mt("Section assignment for role of '[_1]' in [_2] for '[_3]' unchanged.",$plrole,$extent,'<i>'.
+                          &Apache::loncommon::plainname($uname,$udom).
+                          '</i>').' ');
+                    if ($sec eq '') {
+                        $r->print(&mt('[_1]No section[_2] - [_3]','<b>','</b>',$dates));
+                    } else {
+                        $r->print(&mt('Section(s): [_1] - [_2]',
+                                      '<b>'.$showsecs.'</b>',$dates));
+                    }
+                    $r->print('<br />');
+                } else {
+                    $r->print(&mt("$result_text{'ok'}{$choice} role of '[_1]' in [_2] for '[_3]' to [_4] - [_5]",$plrole,$extent,
+                        '<i>'.&Apache::loncommon::plainname($uname,$udom).'</i>',
+                        '<b>'.$showsecs.'</b>',$dates).'<br />');
+                   $count ++;
+               }
+               if ($warn_singlesec) {
+                   $r->print('<div class="LC_warning">'.$warn_singlesec.'</div>');
+               }
+            } elsif ($choice eq 'chgdates') {
+                $r->print(&mt("$result_text{'ok'}{$choice} role of '[_1]' in [_2] for '[_3]' - [_4]",$plrole,$extent, 
+                      '<i>'.&Apache::loncommon::plainname($uname.':'.$udom).'</i>',
+                      $dates).'<br />');
+               $count ++;
+            } else {
+                $r->print(&mt("$result_text{'ok'}{$choice} role of '[_1]' in [_2] for '[_3]'.",$plrole,$extent,
+                      '<i>'.&Apache::loncommon::plainname($uname.':'.$udom).'</i>').
+                          '<br />');
+                $count ++;
+            }
         } else {
             $r->print(
-                &mt("Error $result_text{'error'}{$choice} [_1] in [_2] for [_3]: [_4].",
-                    $plrole,$extent,$uname.':'.$udom,$result).'<br />');
+                &mt("Error $result_text{'error'}{$choice} [_1] in [_2] for '[_3]': [_4].",
+                    $plrole,$extent,
+                    '<i>'.&Apache::loncommon::plainname($uname.':'.$udom).'</i>',
+                    $result).'<br />');
         }
     }
     $r->print('<form name="studentform" method="post" action="/adm/createuser">'."\n");
@@ -4724,7 +4714,7 @@ sub update_user_list {
             }
         }
     }
-    $r->print('<p><b>'.&mt("$result_text{'ok'}{$choice} role(s) for [quant,_1,user,users,no users].",$count).'</b></p>');
+    $r->print('<p><b>'.&mt("$result_text{'ok'}{$choice} for [quant,_1,user role,user roles,no user roles].",$count).'</b></p>');
     if ($count > 0) {
         if ($choice eq 'revoke' || $choice eq 'drop') {
             $r->print('<p>'.&mt('Re-enabling will re-activate data for the role.').'</p>');
@@ -4744,6 +4734,27 @@ sub update_user_list {
     $r->print('<a href="javascript:document.studentform.submit()">'.$linktext.'</a></form>'."\n");
 }
 
+sub dates_feedback {
+    my ($start,$end,$now) = @_;
+    my $dates;
+    if ($start < $now) {
+        if ($end == 0) {
+            $dates .= &mt('role(s) active now; no end date');
+        } elsif ($end > $now) {
+            $dates = &mt('role(s) active now; ends [_1].',&Apache::lonlocal::locallocaltime($end));
+        } else {
+            $dates = &mt('role(s) expired: [_1].',&Apache::lonlocal::locallocaltime($end));
+        }
+     } else {
+        if ($end == 0 || $end > $now) {
+            $dates = &mt('future role(s); starts: [_1].',&Apache::lonlocal::locallocaltime($start));
+        } else {
+            $dates = &mt('role(s) expired: [_1].',&Apache::lonlocal::locallocaltime($end));
+        }
+    }
+    return $dates;
+}
+
 sub classlist_drop {
     my ($scope,$uname,$udom,$now) = @_;
     my ($cdom,$cnum) = ($scope=~m{^/($match_domain)/($match_courseid)});
@@ -4924,7 +4935,7 @@ sub setsections_javascript {
                     accr => 'A course coordinator role will be added with access to all sections.',
                     acor => 'A coordinator role will be added with access to all sections',
                     inea => 'In each course, each user may only have one student role at a time.',
-                    inec => 'In each community, each user may only have on member role at a time.',
+                    inec => 'In each community, each user may only have one member role at a time.',
                     youh => 'You had selected ',
                     secs => 'sections.',
                     plmo => 'Please modify your selections so they include no more than one section.',
@@ -4932,16 +4943,21 @@ sub setsections_javascript {
                     plch => 'Please choose a different section name.',
                     mnot => 'may not be used as a section name, as it is the name of a course group.',
                     secn => 'Section names and group names must be distinct. Please choose a different section name.',
+                    nonw => 'Section names may only contain letters or numbers.',
                  );                
     $setsection_js .= <<"ENDSECCODE";
 
 function setSections(formname,crstype) {
     var re1 = /^currsec_/;
+    var re2 =/\\W/;
+    var trimleading = /^\\s+/;
+    var trimtrailing = /\\s+\$/;
     var groups = new Array($groupslist);
     for (var i=0;i<formname.elements.length;i++) {
         var str = formname.elements[i].name;
         var checkcurr = str.match(re1);
         if (checkcurr != null) {
+            var num = i;
             if ($checkincluded) {
                 $rolecode
                 if (role == 'cc' || role == 'co') {
@@ -4953,38 +4969,60 @@ function setSections(formname,crstype) {
                 } else {
                     var sections = '';
                     var numsec = 0;
-                    var sections;
-                    for (var j=0; j<formname.elements[i].length; j++) {
-                        if (formname.elements[i].options[j].selected == true ) {
-                            if (formname.elements[i].options[j].value != "") {
+                    var fromexisting = new Array();
+                    for (var j=0; j<formname.elements[num].length; j++) {
+                        if (formname.elements[num].options[j].selected == true ) {
+                            var addsec = formname.elements[num].options[j].value;
+                            if ((addsec != "") && (addsec != null)) {
+                                fromexisting.push(addsec);
                                 if (numsec == 0) {
-                                    if (formname.elements[i].options[j].value != "") {
-                                        sections = formname.elements[i].options[j].value;
-                                        numsec ++;
-                                    }
-                                }
-                                else {
-                                    sections = sections + "," +  formname.elements[i].options[j].value
-                                    numsec ++;
+                                    sections = addsec;
+                                } else {
+                                    sections = sections + "," +  addsec;
                                 }
+                                numsec ++;
                             }
                         }
                     }
-                    if (numsec > 0) {
-                        if (formname.elements[i+1].value != "" && formname.elements[i+1].value != null) {
-                            sections = sections + "," +  formname.elements[i+1].value;
-                        }
-                    }
-                    else {
-                        sections = formname.elements[i+1].value;
-                    }
-                    var newsecs = formname.elements[i+1].value;
-                    var numsplit;
+                    var newsecs = formname.elements[num+1].value;
+                    var validsecs = new Array();
+                    var validsecstr = '';
+                    var badsecs = new Array();
                     if (newsecs != null && newsecs != "") {
-                        numsplit = newsecs.split(/,/g);
-                        numsec = numsec + numsplit.length;
+                        var numsplit;
+                        if (newsecs.indexOf(',') == -1) {
+                            numsplit = new Array(newsecs);
+                        } else {
+                            numsplit = newsecs.split(/,/g);
+                        }
+                        for (var m=0; m<numsplit.length; m++) {
+                            var newsec = numsplit[m];
+                            newsec = newsec.replace(trimleading,'');
+                            newsec = newsec.replace(trimtrailing,'');
+                            if (re2.test(newsec) == true) {
+                                badsecs.push(newsec);
+                            } else {
+                                if (newsec != '') {
+                                    var isnew = 1;
+                                    if (fromexisting != null) {
+                                        for (var n=0; n<fromexisting.length; n++) {
+                                            if (newsec == fromexisting[n]) {
+                                                isnew = 0;
+                                            }
+                                        }
+                                    }
+                                    if (isnew == 1) {
+                                        validsecs.push(newsec);
+                                    }
+                                }
+                            }
+                        }
+                        if (badsecs.length > 0) {
+                            alert("$alerts{'nonw'}\\n$alerts{'plch'}");
+                            return;
+                        }
+                        numsec = numsec + validsecs.length;
                     }
-
                     if ((role == 'st') && (numsec > 1)) {
                         if (crstype == 'Community') {
                             alert("$alerts{'inea'} $alerts{'youh'} "+numsec+" $alerts{'secs'}\\n$alerts{'plmo'}");
@@ -4992,25 +5030,36 @@ function setSections(formname,crstype) {
                             alert("$alerts{'inco'} $alerts{'youh'} "+numsec+" $alerts{'secs'}\\n$alerts{'plmo'}");
                         }
                         return;
-                    }
-                    else {
-                        if (numsplit != null) {
-                            for (var j=0; j<numsplit.length; j++) {
-                                if ((numsplit[j] == 'all') ||
-                                    (numsplit[j] == 'none')) {
-                                    alert("'"+numsplit[j]+"' $alerts{'mayn'}\\n$alerts{'plch'}");
+                    } else {
+                        if (validsecs != null) {
+                            for (var j=0; j<validsecs.length; j++) {
+                                if (validsecstr == '' || validsecstr == null) {
+                                    validsecstr = validsecs[j];
+                                } else {
+                                    validsecstr += ','+validsecs[j];
+                                }
+                                if ((validsecs[j] == 'all') ||
+                                    (validsecs[j] == 'none')) {
+                                    alert("'"+validsecs[j]+"' $alerts{'mayn'}\\n$alerts{'plch'}");
                                     return;
                                 }
                                 for (var k=0; k<groups.length; k++) {
-                                    if (numsplit[j] == groups[k]) {
-                                        alert("'"+numsplit[j]+"' $alerts{'mnot'}\\n$alerts{'secn'}");
+                                    if (validsecs[j] == groups[k]) {
+                                        alert("'"+validsecs[j]+"' $alerts{'mnot'}\\n$alerts{'secn'}");
                                         return;
                                     }
                                 }
                             }
                         }
-                        formname.elements[i+2].value = sections;
                     }
+                    if ((validsecstr != '') && (validsecstr != null)) {
+                        if ((sections == '') || (sections == null)) {
+                            sections = validsecstr;
+                        } else {
+                            sections = sections + "," + validsecstr;
+                        }
+                    }
+                    formname.elements[num+2].value = sections;
                 }
             }
         }
@@ -5135,22 +5184,14 @@ sub roles_by_context {
         if ($env{'request.role'} =~ m{^dc\./}) {
             push(@allroles,'ad');
         }
-        if (&Apache::loncommon::needs_gci_custom()) {
-            if ($crstype eq 'Community') {
-                push(@allroles,'co');
-            } else {
-                push(@allroles,'cc');
-            }
+        push(@allroles,('ta','ep','in'));
+        if ($crstype eq 'Community') {
+            push(@allroles,'co');
         } else {
-            push(@allroles,('ta','ep','in'));
-            if ($crstype eq 'Community') {
-                push(@allroles,'co');
-            } else {
-                push(@allroles,'cc');
-            }
-            if ($custom) {
-                push(@allroles,'cr');
-            }
+            push(@allroles,'cc');
+        }
+        if ($custom) {
+            push(@allroles,'cr');
         }
     } elsif ($context eq 'author') {
         @allroles = ('ca','aa');