--- loncom/interface/lonwhatsnew.pm	2007/05/02 01:33:49	1.71
+++ loncom/interface/lonwhatsnew.pm	2021/01/01 15:29:14	1.105.2.19
@@ -1,5 +1,7 @@
+# The LearningOnline Network
+# What's New in a course
 #
-# $Id: lonwhatsnew.pm,v 1.71 2007/05/02 01:33:49 albertel Exp $
+# $Id: lonwhatsnew.pm,v 1.105.2.19 2021/01/01 15:29:14 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,11 +38,13 @@ use Apache::lonlocal;
 use Apache::loncoursedata();
 use Apache::lonnavmaps();
 use Apache::lonuserstate;
+use Apache::lonuserutils; 
 use Apache::Constants qw(:common :http);
 use Time::Local;
 use GDBM_File;
 use lib '/home/httpd/lib/perl/';
 use LONCAPA;
+use HTML::Entities;
 
 #----------------------------
 # handler
@@ -60,14 +64,37 @@ sub handler {
     my $command = $env{'form.command'};
     my $refpage = $env{'form.refpage'};
 
-    my %checkallowed = ( coursenormalmail => 1,
-			 coursecritmail => 1, );
+    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
+
+    my ($isadhoc,%checkallowed);
+
+    if ($env{'request.role'} =~ m{^(cc|co)/}) {
+        my $rolecode = $1;
+        if ($env{"environment.internal.$cdom.$crs.$env{'request.role'}.adhoc"}) {
+            $isadhoc = 1;
+        }
+    } elsif ($env{'request.role'} =~ m{^cr/$cdom/$cdom\-domainconfig/(\w+)\./}) {
+        my $rolename = $1;
+        if ($env{"environment.internal.$cdom.$crs.cr/$cdom/$cdom-domainconfig/$rolename.adhoc"}) {
+            $isadhoc = 1;
+        }
+    }
+    unless ($isadhoc) {
+        %checkallowed = ( coursenormalmail => 1,
+                          coursecritmail => 1,);
+    }
     foreach my $perm_check (['whn','whatsnew',1],
 			    ['pch','coursediscussion',1],
 			    ['mgr','handgrading',1],
 			    ['vgr','abovethreshold',1],
-			    ['opa','haserrors',1],
-			    ['mdc','versionchanges',0],
+			    ['vgr','haserrors',1],
+			    ['whn','versionchanges',1],
+                            ['vcl','newroles',1],
+                            ['vcl','oldroles',1],
+                            ['whn','crslogin',1],
+                            ['vcl','sessions',1],
+                            ['mgr','resetcounters',1],
 			    ) {
 	my ($perm,$key,$check_section) = @{ $perm_check };
 	my $scope = $env{'request.course.id'};
@@ -84,7 +111,7 @@ sub handler {
 
     if ( ! $env{'request.course.fn'} || ! $checkallowed{'whatsnew'}) {
         # Not in a course, or no whn priv in course
-        $env{'user.error.msg'}="/adm/whatsnew::whn:0:0:Cannot display what's new page";
+        $env{'user.error.msg'}="/adm/whatsnew:whn:0:0:Cannot display what's new page";
         return HTTP_NOT_ACCEPTABLE;
     }
 
@@ -96,41 +123,69 @@ sub handler {
     &Apache::lonhtmlcommon::clear_breadcrumbs();
     &Apache::lonhtmlcommon::add_breadcrumb
             ({href=>'/adm/whatsnew',
-              text=>"Display Action Items"});
+              text=>"What's New?"});
     if (($command eq 'chgthreshold') && $checkallowed{'abovethreshold'}) {
         &Apache::lonhtmlcommon::add_breadcrumb
-            ({href=>'/adm/whatsnew?command=chgthreshold&refpage='.$refpage,
+            ({href=>'/adm/whatsnew?command=chgthreshold&refpage='.$refpage,
               text=>"Change thresholds"});
         $r->print(&Apache::lonhtmlcommon::breadcrumbs
             ("What's New?",#'Course_Action_Items_Thresholds'
 	     ));
     } elsif (($command eq 'chginterval') && $checkallowed{'versionchanges'} ) {
         &Apache::lonhtmlcommon::add_breadcrumb
-            ({href=>'/adm/whatsnew?command=chginterval&refpage='.$refpage,
+            ({href=>'/adm/whatsnew?command=chginterval&refpage='.$refpage,
               text=>"Change interval"});
         $r->print(&Apache::lonhtmlcommon::breadcrumbs
             ("What's New?",#'Course_Action_Items_Intervals'
 	     ));
     } elsif (($command eq 'chgdisc') && $checkallowed{'coursediscussion'}) {
         &Apache::lonhtmlcommon::add_breadcrumb
-            ({href=>'/adm/whatsnew?command=chgdisc&refpage='.$refpage,
+            ({href=>'/adm/whatsnew?command=chgdisc&refpage='.$refpage,
               text=>"Change discussion display"});
         $r->print(&Apache::lonhtmlcommon::breadcrumbs
             ("What's New?",#'Course_Action_Items_Intervals'
 	     ));
     } elsif ($command eq 'courseinit') {
         &Apache::lonhtmlcommon::add_breadcrumb
-            ({href=>'/adm/whatsnew?command=courseinit&refpage='.$refpage,
+            ({href=>'/adm/whatsnew?command=courseinit&refpage='.$refpage,
               text=>"Course initialization preference"});
         $r->print(&Apache::lonhtmlcommon::breadcrumbs
             ("What's New?",#'Course_Action_Items_Initialization'
 	     ));
+    } elsif ($command eq 'chgoldroleinterval' && $checkallowed{'oldroles'}) {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({href=>'/adm/whatsnew?command=chgoldroleinterval&refpage='.$refpage,
+              text=>"Change interval"});
+        $r->print(&Apache::lonhtmlcommon::breadcrumbs
+            ("What's New?",#'Course_Action_Items_Intervals'
+             ));
+    } elsif ($command eq 'chgnewroleinterval' && $checkallowed{'newroles'}) {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({href=>'/adm/whatsnew?command=chgnewroleinterval&refpage='.$refpage,
+              text=>"Change interval"});
+        $r->print(&Apache::lonhtmlcommon::breadcrumbs
+            ("What's New?",#'Course_Action_Items_Intervals'
+             ));
+    } elsif ($command eq 'chgcrslogininterval' && $checkallowed{'crslogin'}) {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({href=>'/adm/whatsnew?command=chgcrslogininterval&refpage='.$refpage,
+              text=>"Change interval"});
+        $r->print(&Apache::lonhtmlcommon::breadcrumbs
+            ("What's New?",#'Course_Action_Items_Intervals'
+             ));
+    } elsif ($command eq 'chgsessionlimit' && $checkallowed{'sessions'}) {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({href=>'/adm/whatsnew?command=chgsessionlimit&refpage='.$refpage,
+              text=>"Change session range"});
+        $r->print(&Apache::lonhtmlcommon::breadcrumbs
+            ("What's New?",#'Course_Action_Items_Sessions'
+             ));
     } else {
         $r->print(&Apache::lonhtmlcommon::breadcrumbs
             ("What's New?",#'Course_Action_Items_Display'
 	     ));
     }
-    &display_main_box($r,$command,$refpage,\%checkallowed);
+    &display_main_box($r,$command,$refpage,\%checkallowed,$cdom,$crs);
     return OK;
 }
 
@@ -141,7 +196,7 @@ sub handler {
 #------------------------------
                                                                                 
 sub display_main_box {
-    my ($r,$command,$refpage,$checkallowed) = @_;
+    my ($r,$command,$refpage,$checkallowed,$cdom,$crs) = @_;
     my $domain=&Apache::loncommon::determinedomain();
     my $function = &Apache::loncommon::get_users_function();
     my $lctype = lc(&Apache::loncommon::course_type());
@@ -152,35 +207,74 @@ sub display_main_box {
                          degdiff => 'Degree of difficulty',
                          numstudents => 'Total number of students with submissions',
     );
-
-    my %interval_titles = &Apache::lonlocal::texthash (
-                            -1 => "since start of $lctype",
-                       2592000 => 'since last month',
-                        604800 => 'since last week',
-                         86400 => 'since yesterday',
+    my %versions = (
+                       -1 => "version changes since start of $lctype",
+                  2592000 => 'version changes since last month',
+                   604800 => 'version changes since last week',
+                    86400 => 'version changes since yesterday',
+                   );
+    my %newroles = (
+                       -1 => "roles which have become active since start of $lctype",
+                  2592000 => 'roles which have become active since last month',
+                   604800 => 'roles which have become active since last week',
+                    86400 => 'roles which have become active since yesterday',
+                   );
+    my %oldroles = (
+                       -1 => "roles which expired since start of $lctype",
+                  2592000 => 'roles which expired since last month',
+                   604800 => 'roles which expired since last week',
+                    86400 => 'roles which expired since yesterday',
+                   );
+    my %crslogins = (
+                       -1 => 'last logins for anyone who has ever logged in',
+                  2592000 => 'last logins for users in last 30 days',
+                   604800 => 'last logins for users in last 7 days',
+                    86400 => 'last logins for users in last 24 hours',
+                   );
+    my %sessions = (
+                     300  => 'course sessions active in the last 5 minutes',
+                     600  => 'course sessions active in the last 10 minutes',
+                     1800 => 'course sessions active in the last 30 minutes',
+                     7200 => 'course sessions active in the last 2 hours',
+                    -7200 => 'course sessions with last activity more than 2 hours ago',
+                   );
+    my %interval_titles = (
+        versions => \%versions,
+        newroles => \%newroles,
+        oldroles => \%oldroles,
+        crslogin => \%crslogins,
+        sessions => \%sessions,
     );
-
     my %initpage = &Apache::lonlocal::texthash (
                      firstres => "first resource in the $lctype",
-                     whatsnew => "what's new? page",
+                     whatsnew => "What's New Page",
                      userpref => 'your general user preferences',
                      coursespecific => "specific setting for this $lctype",
                    );
-    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
-    my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
 
     if (($command eq 'chgthreshold') 
 	&& $checkallowed->{'abovethreshold'}) {
-        &display_threshold_config($r,$refpage,\%threshold_titles,
-                                                                   $cdom,$crs);
+        &display_threshold_config($r,$refpage,\%threshold_titles,$cdom,$crs);
     } elsif (($command eq 'chginterval') 
 	     && $checkallowed->{'versionchanges'}) {
-        &display_interval_config($r,$refpage,\%interval_titles);
+        &display_interval_config($r,$refpage,\%interval_titles,'versions');
     } elsif (($command eq 'chgdisc') 
 	     && $checkallowed->{'coursediscussion'}) {
         &display_discussion_config($r,$refpage);
     } elsif ($command eq 'courseinit') {
         &courseinit_config($r,$refpage,\%initpage);
+    } elsif (($command eq 'chgnewroleinterval')
+             && $checkallowed->{'newroles'}) {
+        &display_interval_config($r,$refpage,\%interval_titles,'newroles');
+    } elsif (($command eq 'chgoldroleinterval')
+             && $checkallowed->{'oldroles'}) {
+        &display_interval_config($r,$refpage,\%interval_titles,'oldroles');
+    } elsif (($command eq 'chgcrslogininterval')
+             && $checkallowed->{'crslogin'}) {
+        &display_interval_config($r,$refpage,\%interval_titles,'crslogin');
+    } elsif (($command eq 'chgsessionlimit')
+             && $checkallowed->{'sessions'}) {
+        &display_interval_config($r,$refpage,\%interval_titles,'sessions');
     } else {
         &display_actions_box($r,$command,$refpage,\%threshold_titles,
                         \%interval_titles,\%initpage,$cdom,$crs,$checkallowed);
@@ -205,12 +299,15 @@ sub display_header {
     my ($command,$checkallowed) = @_;
     
     my $scripttag;
-    unless ($command eq 'chgthreshold' || $command eq 'chginterval') {
+    unless ($command eq 'chgthreshold' || $command eq 'chginterval' || 
+            $command eq 'chgoldroleinterval' ||
+            $command eq 'chgnewroleinterval' || $command eq 'chgcrslogininterval') {
        $scripttag = <<"END";
 <script type="text/javascript">
+// <![CDATA[
 function change_display(caller,change) {
     caller.value = change;
-    document.visible.submit(); 
+    document.visible.submit();
 }
 
 function changeAll(change) {
@@ -222,13 +319,65 @@ END
                             "\n";
             }
         }
-        $scripttag.='document.visible.submit();
+        $scripttag.=<<"ENDTOGG";
+    document.visible.submit();
 }
+
+function thresholdreset() {
+    document.visible.command.value="reset";
+    document.visible.submit();
+}
+
+function toggledetails(prefix) {
+    var total = document.visible[prefix+'count'].value;
+    var sumrow = document.visible[prefix+'row'].value;
+    if (total == 0) {
+        return;
+    }
+    var showdetails = 0;
+    for (var i=0; i<document.visible[prefix+'details'].length; i++) {
+        if (document.visible[prefix+'details'][i].checked) {
+            showdetails = document.visible[prefix+'details'][i].value;
+        }
+    }
+    var detval = "none";
+    var sumval = "";
+    if (showdetails == 1) {
+        detval = "";
+        sumval = "none";
+    }
+    for (var j=0; j<total; j++) {
+        var counter = j+1;
+        var itemid = prefix+"det_"+counter;
+        personele = document.getElementById(itemid);
+        if (personele != null) {
+            personele.style.display = detval;
+        }
+    }
+    var detheaderele = document.getElementById(prefix+"titledet");
+    if (detheaderele != null) {
+        detheaderele.style.display = detval;
+    }
+    for (var k=0; k<sumrow; k++) {
+        var counter = k+1;
+        var itemid = prefix+"sum_"+counter;
+        catele = document.getElementById(itemid);
+        if (catele != null) {
+            catele.style.display = sumval;
+        }
+    }
+    var sumheaderele = document.getElementById(prefix+"titlesum");
+    if (sumheaderele != null) {
+        sumheaderele.style.display = sumval;
+    }
+    return;
+}
+// ]]>
 </script>
-';
+ENDTOGG
     }
     my $course_type=&Apache::loncommon::course_type();
-    return &Apache::loncommon::start_page($course_type.' Action Items',
+    return &Apache::loncommon::start_page("What's New?",
 					  $scripttag);
 }
 
@@ -249,7 +398,7 @@ sub display_actions_box {
     my $lctype = lc($crstype);
     my %stulabel = (
                     'Course' => 'students',
-                    'Group' => 'members',
+                    'Community' => 'members',
                    );
     my %lt = &Apache::lonlocal::texthash(
                  'yacc' => 'You are accessing an invalid course',
@@ -271,7 +420,14 @@ sub display_actions_box {
     my @warnings = ();
     my $msgcount = 0;
     my $critmsgcount = 0;
-
+    my $expirecount;
+    my %expired;
+    my $activecount;
+    my %activated;
+    my %loggedin;
+    my $logincount;
+    my %sessions;
+    my $sessioncount;
     my %res_title = ();
     my %show = ();
     my $needitems = 0;
@@ -285,7 +441,7 @@ sub display_actions_box {
     my %threshold = ();
     my %pagedesc = &Apache::lonlocal::texthash (
                      firstres => 'First resource',
-                     whatsnew => "What's New? page",
+                     whatsnew => "What's New Page",
                      userpref => 'user preference',
                      coursespecific => $lctype.' only',
                      default => 'default',
@@ -295,26 +451,37 @@ sub display_actions_box {
     my $currinit = $pagedesc{$initdisp}.' ('.$pagedesc{$initcontrol}.')';
 
     unless ($cid) {
-        $r->print('<br /><b><center>'.$lt{'yacc'}.'</center></b><br /><br />');
+        $r->print('<p><span style="text-align: center; font-weight: bold;">'.$lt{'yacc'}.'</span></p>');
         return;
     }
 
+    my $header = '';
     if ($refpage eq 'start') {
         if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
             &GDBM_READER(),0640)) {
-            my $furl=$bighash{'first_url'};
+            my $furl=&HTML::Entities::encode($bighash{'first_url'},'"<>&');
             untie(%bighash);
-            $r->print('<font size="+1"><a href="'.$furl.'">'.$lt{'gtfr'}.
-                  '</a></font><br />');
+            $header .= '<b><a href="'.$furl.'">'.$lt{'gtfr'}.
+                  '</a></b><br />';
         }
     }
-    $r->print(&mt('Page set to be displayed after you have selected a role in this '.$lctype).
-              '. <nobr>'.&mt('Currently: <i>[_1]</i>',$currinit).'.&nbsp;&nbsp;'.
-              &mt('<b>Change</b> for just <a href="/adm/whatsnew?command=courseinit&refpage=[_1]">this '.$lctype.'</a>',$refpage).' '.
-              &mt('or for all <a href="/adm/preferences?action=changecourseinit&refpage=[_1]">your courses</a>.',$refpage).'</nobr><br /><hr />');
+    $header .= &mt('Page set to be displayed after you have selected a role in this '.$lctype).'.'
+              .' <span class="LC_nobreak">'
+              .&mt('Currently: [_1].','<i>'.$currinit.'</i>')
+              .'&nbsp;&nbsp;'
+              .&mt('[_1]Change[_2] for just [_3]this '.$lctype.'[_4] or for [_5]all your courses/communities[_6].'
+                  ,'<b>'
+                  ,'</b>'
+                  ,'<a href="/adm/whatsnew?command=courseinit&amp;refpage='.$refpage.'">'
+                  ,'</a>'
+                  ,'<a href="/adm/preferences?action=changecourseinit&amp;refpage='.$refpage.'">'
+                  ,'</a>')
+              .' </span>';
+
+    $r->print(&Apache::loncommon::head_subbox($header));
 
     if ($command eq 'reset') {
-        $result = &process_reset($cdom,$crs);
+        $result = &process_reset($cdom,$crs,$checkallowed);
     } elsif ($command eq 'update') {
         $result = &process_update($uname,$udom,$threshold_titles);
     } elsif ($command eq 'newinterval') {
@@ -328,49 +495,153 @@ sub display_actions_box {
     unless ($store_result eq 'ok') { 
         &Apache::lonnet::logthis('Error saving whatsnew settings: '.
             $store_result.' for '.'user '.$uname.':'.$udom.' in '.$lctype.' '.$cid);
-        $result .= &mt('Unable to save visibility settings due to [_1]',
-                       $store_result); 
+        $result .= '<span class="LC_error">'
+                  .&mt('Unable to save visibility settings due to [_1]',
+                       $store_result)
+                  .'</span>';
     }
 
     if ($result) {
-        $r->print($result.'<hr width="100%" />');
+        $r->print($result.'<hr />');
     }
     $r->rflush();
 
-
+    my (%timediff,%interval);
     my %display_settings = &get_display_settings($uname,$udom,$cid);
-    my $timediff = $display_settings{$cid.':interval'};
-    unless (defined($timediff)) { $timediff = 604800; } 
-    my $now = time;
-    my $interval = $$interval_titles{$timediff};
-    if ($timediff == -1) {
-        $timediff = time;
-    } 
-    my $starttime = $now - $timediff;
-    my $countunread = $display_settings{$cid.':countunread'};
-    unless (defined($countunread)) {
-        $countunread = 'on';
-    }
+    $timediff{'versions'} = $display_settings{$cid.':interval'};
+    unless (defined($timediff{'versions'})) { $timediff{'versions'} = 604800; } 
+    $interval{'versions'} = $interval_titles->{'versions'}->{$timediff{'versions'}};
 
     my %headings = &Apache::lonlocal::texthash(
-                coursediscussion =>  'Unread '.$lctype.' discussion posts',
-                handgrading =>  'Problems requiring handgrading',
-                haserrors => 'Problems with errors',
-                versionchanges => 'Resources in '.$lctype.' with version changes '.$interval,
+                coursediscussion => 'Unread '.$lctype.' discussion posts',
+                handgrading      => 'Problems requiring handgrading',
+                haserrors        => 'Problems with errors',
                 coursenormalmail => 'New '.$lctype.' messages',
-                coursecritmail => 'New critical messages in '.$lctype,
+                coursecritmail   => 'New critical messages in '.$lctype,
     );
 
+    if ($timediff{'versions'} == -1) {
+        $headings{'versionchanges'} = &mt('Resources in '.$lctype.' with version changes since start of '.$lctype);
+    } elsif ($timediff{'versions'} == 2592000) {
+        $headings{'versionchanges'} = &mt('Resources in '.$lctype.' with version changes since last month');
+    } elsif ($timediff{'versions'} == 604800) {
+        $headings{'versionchanges'} = &mt('Resources in '.$lctype.' with version changes since last week');
+    } elsif ($timediff{'versions'} == 86400) {
+        $headings{'versionchanges'} = &mt('Resources in '.$lctype.' with version changes since yesterday');
+    }
+
+    $timediff{'oldroles'} = $display_settings{$cid.':oldroleinterval'};
+    unless (defined($timediff{'oldroles'})) { $timediff{'oldroles'} = 604800; }
+    $interval{'oldroles'} = $interval_titles->{'oldroles'}->{$timediff{'oldroles'}};
+
+    if ($timediff{'oldroles'} == -1) {
+        $headings{'oldroles'} = &mt('Roles for which access to '.$lctype.' has expired since start of '.$lctype);
+    } elsif ($timediff{'oldroles'} == 2592000) {
+        $headings{'oldroles'} = &mt('Roles for which access to '.$lctype.' has expired since last month');
+    } elsif ($timediff{'oldroles'} == 604800) {
+        $headings{'oldroles'} = &mt('Roles for which access to '.$lctype.' has expired since last week');
+    } elsif ($timediff{'oldroles'} == 86400) {
+        $headings{'oldroles'} = &mt('Roles for which access to '.$lctype.' has expired since yesterday');
+    }
+
+    $timediff{'newroles'} = $display_settings{$cid.':newroleinterval'};
+    unless (defined($timediff{'newroles'})) { $timediff{'newroles'} = 604800; }
+    $interval{'newroles'} = $interval_titles->{'newroles'}->{$timediff{'newroles'}};
+
+    if ($timediff{'newroles'} == -1) {
+        $headings{'newroles'} = &mt('Roles for which access to '.$lctype.' has become available since start of '.$lctype);
+    } elsif ($timediff{'newroles'} == 2592000) {
+        $headings{'newroles'} = &mt('Roles for which access to '.$lctype.' has become available since last month');
+    } elsif ($timediff{'newroles'} == 604800) {
+        $headings{'newroles'} = &mt('Roles for which access to '.$lctype.' has become available since last week');
+    } elsif ($timediff{'newroles'} == 86400) {
+        $headings{'newroles'} = &mt('Roles for which access to '.$lctype.' has become available since yesterday');
+    }
+
+    $timediff{'crslogin'} = $display_settings{$cid.':crslogininterval'};
+    unless (defined($timediff{'crslogin'})) { $timediff{'crslogin'} = 604800; }
+    $interval{'crslogin'} = $interval_titles->{'crslogin'}->{$timediff{'crslogin'}};
+
+    if ($timediff{'crslogin'} == -1) {
+        $headings{'crslogin'} = &mt('Last login for anyone who has ever logged in');
+    } elsif ($timediff{'crslogin'} == 2592000) {
+        $headings{'crslogin'} = &mt('Last login for users in last 30 days');
+    } elsif ($timediff{'crslogin'} == 604800) {
+        $headings{'crslogin'} = &mt('Last login for users in last 7 days');
+    } elsif ($timediff{'crslogin'} == 86400) {
+        $headings{'crslogin'} = &mt('Last login for users in last 24 hours');
+    }
+
+    $timediff{'sessions'} = $display_settings{$cid.':sessionactivity'};
+    unless (defined($timediff{'sessions'})) { $timediff{'sessions'} = 7200; }
+    $interval{'sessions'} = $interval_titles->{'sessions'}->{$timediff{'sessions'}};
+
+    if ($timediff{'sessions'} == -7200) {
+        $headings{'sessions'} = &mt('Session with activity more than 2 hours ago');
+    } elsif ($timediff{'sessions'} == 7200) {
+        $headings{'sessions'} = &mt('Session with activity in last 2 hours');
+    } elsif ($timediff{'sessions'} == 1800) {
+        $headings{'sessions'} = &mt('Session with activity in last 30 minutes');
+    } elsif ($timediff{'sessions'} == 600) {
+        $headings{'sessions'} = &mt('Session with activity in last 10 minutes');
+    } elsif ($timediff{'sessions'} == 300) {
+        $headings{'sessions'} = &mt('Session with activity in last 5 minutes');
+    }
+
+    my ($now,$starttime,$activatedstart,$expiredstart,$crsloginstart);
+    $now = time;
+
+    if ($timediff{'versions'} == -1) {
+        $starttime = 0;
+    } else {
+        $starttime = $now - $timediff{'versions'};
+    }
+
+    if ($timediff{'newroles'} == -1) {
+        $activatedstart = 0;
+    } else {
+        $activatedstart = $now - $timediff{'newroles'};
+    }
+
+    if ($timediff{'oldroles'} == -1) {
+        $expiredstart = 0;
+    } else {
+        $expiredstart = $now - $timediff{'oldroles'};
+    }
+
+    if ($timediff{'crslogin'} == -1) {
+        $crsloginstart = 0;
+    } else {
+        $crsloginstart = $now - $timediff{'crslogin'};
+    }
+
+    my $countunread = $display_settings{$cid.':countunread'};
+    unless (defined($countunread)) {
+        $countunread = 'on';
+    }
     if ($$checkallowed{'abovethreshold'}) {
         &get_curr_thresholds(\%threshold,$uname,$udom,$cid,$cdom,$crs);
     }
 
     $headings{'abovethreshold'} = 
-	&mt('Problems with av. attempts &ge; [_1] or deg. difficulty &ge; [_2] <br /> and total number of '.$stulabel{$crstype}.' with submissions &ge; [_3]',
+	&mt('(Problems with av. attempts &ge; [_1] or deg. difficulty &ge; [_2]) [_3] and total number of '.$stulabel{$crstype}.' with submissions &ge; [_4]',
 	    $threshold{'av_attempts'},$threshold{'degdiff'},
-	    $threshold{'numstudents'});
+	    '<br />',$threshold{'numstudents'});
 
-    my @actionorder = ('handgrading','haserrors','abovethreshold','versionchanges','coursediscussion','coursenormalmail','coursecritmail');
+    my @actionorder = ('handgrading','haserrors','abovethreshold','versionchanges','coursediscussion','coursenormalmail','coursecritmail','newroles','oldroles','crslogin','sessions');
+    my %actioncolumn = (
+                         handgrading      => 'left',
+                         haserrors        => 'left',
+                         abovethreshold   => 'left',
+                         versionchanges   => 'left',
+                         coursediscussion => 'right',
+                         coursenormalmail => 'right',
+                         coursecritmail   => 'right',
+                         newroles         => 'right',
+                         oldroles         => 'right',
+                         crslogin         => 'right',
+                         sessions         => 'right',
+                       );
 
     foreach my $key (keys(%{$checkallowed})) {
 	if ($key =~ /_section$/) { next; }
@@ -383,7 +654,9 @@ sub display_actions_box {
     }
 
     foreach my $item (@actionorder) {
-        unless ($item eq 'coursenormalmail' || $item eq 'coursecritmail') {
+        unless ($item eq 'coursenormalmail' || $item eq 'coursecritmail' ||
+                $item eq 'newroles' || $item eq 'oldroles' || 
+                $item eq 'crslogin' || $item eq 'sessions') {
             if ($show{$item}) {
                 $needitems = 1;
                 last;
@@ -391,8 +664,13 @@ sub display_actions_box {
         }
     }
 
+    my $itemserror;
     if ($needitems) {
-        &getitems(\%unread,\%ungraded,\%bombed,\%triggered,\%changed,\@newdiscussions,\@tograde,\@bombs,\@warnings,\%threshold,$cdom,$crs,\%res_title,\%show,$starttime,$countunread);
+        $itemserror = &getitems(\%unread,\%ungraded,\%bombed,\%triggered,\%changed,\@newdiscussions,\@tograde,\@bombs,\@warnings,\%threshold,$cdom,$crs,\%res_title,\%show,$starttime,$countunread,$checkallowed);
+    }
+    my $classlist;
+    if ($show{'oldroles'} || $show{'newroles'} || $show{'crslogin'} || $show{'sessions'}) {
+        $classlist = &Apache::loncoursedata::get_classlist();
     }
     if ($show{'coursenormalmail'}) {
         $msgcount = &getnormalmail(\@newmsgs);
@@ -400,7 +678,18 @@ sub display_actions_box {
     if ($show{'coursecritmail'}) {
         $critmsgcount = &getcritmail(\@critmsgs);
     }
-
+    if ($show{'oldroles'}) {
+        $expirecount = &getexpired(\%expired,$expiredstart,'previous',$classlist);
+    }
+    if ($show{'newroles'}) {
+        $activecount = &getactivated(\%activated,$activatedstart,'active',$classlist);
+    }
+    if ($show{'crslogin'}) {
+        $logincount = &getloggedin($cdom,$crs,\%loggedin,$crsloginstart);
+    }
+    if ($show{'sessions'}) {
+        $sessioncount = &getsessions($cdom,$crs,\%sessions,$timediff{'sessions'},$classlist);
+    }
     $r->print(qq|<a href="javascript:changeAll('hide');">$lt{'hial'}</a>
      &nbsp;&nbsp;<a href="javascript:changeAll('show');">$lt{'shal'}</a>
      <form method="post" name="visible" action="/adm/whatsnew">\n|);
@@ -411,7 +700,7 @@ sub display_actions_box {
         }
     }
 
-    $r->print('<input type="hidden" name="refpage" value="'.$refpage.'"></form><br /><table border="0" width="100%" cellpadding="2" cellspacing="4"><tr><td align="left" valign="top" width="45%">');
+    $r->print('<input type="hidden" name="refpage" value="'.$refpage.'" /><table class="LC_double_column"><tr><td class="LC_left_col">');
 
     my $displayed = 0;
     my $totalboxes = 0;
@@ -422,24 +711,24 @@ sub display_actions_box {
             $totalboxes ++;
         }
     }
-    my $halfway = int($totalboxes/2) + $totalboxes%2;
+    my $currcolumn = 'left';
+#    my $halfway = int($totalboxes/2) + $totalboxes%2;
     foreach my $actionitem (@actionorder) {
-        if ($$checkallowed{$actionitem}) {
-            if ($displayed == $halfway) {
-                $r->print('</td><td width="6%">&nbsp;</td><td align="left" valign="top" width="47%">');
+        if ($checkallowed->{$actionitem}) {
+            if (($actioncolumn{$actionitem} eq 'right') && ($currcolumn eq 'left')) {
+                $r->print('</td><td>&nbsp;</td><td class="LC_right_col" >');
+                $currcolumn = 'right'; 
             }
-            &display_launcher($r,$actionitem,$refpage,$checkallowed,\%show,\%headings,\%res_title,\@tograde,\%ungraded,\@bombs,\%bombed,\%changed,\@warnings,\%triggered,\@newdiscussions,\%unread,$msgcount,\@newmsgs,$critmsgcount,\@critmsgs,$interval,$countunread);
+            &display_launcher($r,$actionitem,$refpage,$checkallowed,\%show,\%headings,\%res_title,\@tograde,\%ungraded,\@bombs,\%bombed,\%changed,\@warnings,\%triggered,\@newdiscussions,\%unread,$msgcount,\@newmsgs,$critmsgcount,\@critmsgs,\%interval,$countunread,\%expired,$expirecount,\%activated,$activecount,$crstype,$itemserror,\%loggedin,$logincount,\%sessions,$sessioncount,$classlist);
             $displayed ++; 
         }
     }
     $r->print('
-           </table>
-          </td>
-         </tr>
-        </table>
       </td>
     </tr>
-   </table>');
+   </table>
+   </form>
+');
 }
 
 #-------------------------------
@@ -477,7 +766,7 @@ sub display_threshold_config {
     foreach my $type (@thresholditems) {
         my $parameter = $env{'request.course.id'}.':threshold_'.$type;
 # onchange is javascript to automatically check the 'Set' button.
-        my $onchange = 'onFocus="javascript:window.document.forms'.
+        my $onchange = 'onfocus="javascript:window.document.forms'.
               "['thresholdform'].elements['".$parameter."_setparmval']".
               '.checked=true;"';
         $r->print(&Apache::loncommon::start_data_table_row()."\n".
@@ -491,7 +780,7 @@ sub display_threshold_config {
                  &Apache::loncommon::end_data_table_row());
     }
     $r->print(&Apache::loncommon::end_data_table()."\n".
-          '<br /><input type="submit" name="threshold" value="Make changes" />
+          '<br /><input type="submit" name="threshold" value="'.&mt('Save').'" />
                  <input type="hidden" name="command" value="update" />
                  <input type="hidden" name="refpage" value="'.$refpage.'" />
                </form>');
@@ -505,28 +794,62 @@ sub display_threshold_config {
 #-------------------------------
                                                                                    
 sub display_interval_config {
-    my ($r,$refpage,$interval_titles) = @_;
+    my ($r,$refpage,$interval_titles,$context) = @_;
+    my $setting = 'interval';
+    if ($context eq 'oldroles') {
+        $setting = 'oldroleinterval';
+    } elsif ($context eq 'newroles') {
+        $setting = 'newroleinterval'; 
+    } elsif ($context eq 'sessions') {
+        $setting = 'sessionactivity';
+    }
     my $lctype = lc(&Apache::loncommon::course_type());
     my $current = &get_current($env{'user.name'},$env{'user.domain'},
-                                $env{'request.course.id'},'interval');
-    $r->print('<br />'.&mt('Choose the time window to use for display of version changes for resources in the '.$lctype.'.'));
+                                $env{'request.course.id'},$setting);
+    if ($context eq 'oldroles') {
+        $r->print('<br />'.&mt('Choose the time window to use to display roles for which access to the '.$lctype.' expired.').'<br />');
+    } elsif ($context eq 'newroles') {
+        $r->print('<br />'.&mt('Choose the time window to use to display roles for which access to the '.$lctype.' became available.').'<br />');
+    } elsif ($context eq 'crslogin') {
+        $r->print('<br />'.&mt('Choose the time window to use to display the last login by a user in the '.$lctype).'<br />');
+    } elsif ($context eq 'sessions') {
+        $r->print('<br />'.&mt('Choose the time limit to use to display active user sessions in the '.$lctype.'.').'<br />');
+    } else {
+        $r->print('<br />'.&mt('Choose the time window to use to display resources in the '.$lctype.' with version changes.').'<br />');
+    }
     unless ($current eq '') {
-        $r->print(' '.&mt('Current value is [_1]','<b>'.
-                  $$interval_titles{$current}.'</b>.'));
+        if (ref($interval_titles->{$context}) eq 'HASH') {
+            $r->print(' '.&mt('Current value is "[_1]".','<b>'.
+                      $interval_titles->{$context}->{$current}.'</b>').'<br />');
+        }
     }
-    $r->print('<br /><br />
+    $r->print('<br />
 <form method="post" name="intervalswitch" action="/adm/whatsnew">
 <input type="hidden" name="command" value="newinterval" />
-<input type="hidden" name="refpage" value="'.$refpage.'" />
+<input type="hidden" name="intervaltype" value="'.$context.'" />
+<input type="hidden" name="refpage" value="'.$refpage.'" />'.
+&mt('Display:').' 
 <select name="interval">
+<option value="" selected="selected">'.&mt('Select').'</option>
 ');
-    foreach my $key (reverse sort ({$a cmp $b} (keys(%{$interval_titles})))) {
-        $r->print('<option value="'.$key.'">'.&mt('Version changes').' '.$$interval_titles{$key}.
-                  '</option>'."\n");
+    if (ref($interval_titles) eq 'HASH') {
+        if (ref($interval_titles->{$context}) eq 'HASH') {
+            my @sorted;
+            if ($context eq 'sessions') {
+                @sorted = sort { $a <=> $b } (keys(%{$interval_titles->{$context}}));
+                push(@sorted,shift(@sorted));
+            } else {
+                @sorted = reverse sort ({$a cmp $b} (keys(%{$interval_titles->{$context}})));
+            }
+            foreach my $key (@sorted) {
+                $r->print('<option value="'.$key.'">'.&mt($interval_titles->{$context}->{$key}).
+                          '</option>'."\n");
+            }
+        }
     }
     $r->print('</select>&nbsp;&nbsp;
                <input type="submit" name="display" value="'.
-               &mt('Change interval').'" /></form>');
+               &mt('Save').'" /></form>');
     return;
 }
 
@@ -556,7 +879,13 @@ function toggle_countunread(choice) {
     document.discussionswitch.submit();
 }
 </script>');
-    $r->print('<br />'.&mt('Choose whether or not to display a count of the number of new posts for each resource or bulletin board which has unread posts.').'<br />'.&mt("This can increase the time taken to gather data for the '<i>What's New?</i>' page by a few seconds.").'&nbsp;&nbsp;'.&mt("Currently set to <b>$current</b>."));
+    $r->print('<br />'
+             .&mt('Choose whether or not to display a count of the number of new posts for each resource or discussion board which has unread posts.')
+             .'<br />'
+             .&mt("This can increase the time taken to gather data for the [_1]What's New Page[_2] by a few seconds.",'<i>','</i>')
+             .'&nbsp;&nbsp;'
+             .&mt('Currently set to [_1].','<b>'.$current.'</b>')
+    );
     $r->print('<br /><br />
 <form method="post" name="discussionswitch" action="/adm/whatsnew">
 <input type="hidden" name="command" value="newdiscconf" />
@@ -565,10 +894,10 @@ function toggle_countunread(choice) {
 ');
     $r->print('<br/>
                <input type="button" name="display" value="'.
-               &mt('Change to [_1]',$opposite{$current}).'" 
-               onclick="javascript:toggle_countunread('."'change'".')" />
-               &nbsp;&nbsp;&nbsp;&nbsp;&nbsp&nbsp;&nbsp;
-               <input type="button" name="nochange" value="'.
+               &mt('Change to [_1]',&mt($opposite{$current})).'" 
+               onclick="javascript:toggle_countunread('."'change'".')" />'.
+               ('&nbsp;' x7).
+               '<input type="button" name="nochange" value="'.
                &mt("No change").'" 
                onclick="javascript:toggle_countunread('."'unchanged'".')" />
                </form>');
@@ -595,7 +924,7 @@ sub courseinit_config {
                              'anis' => 'and is set to display',
                              'padc' => 'Page display controlled by',
                              'chce' => 'Choose '.$lctype.' entry',
-                             'moce' => 'Modify '.$lctype.' entry',
+                             'moce' => 'Save',
     );
     $r->print(<<"END"); 
 <br />$lt{'chwp'}
@@ -612,9 +941,9 @@ END
         if ($choice eq $control) {
             $chkstring = ' checked="checked" ';
         }  
-        $r->print('<nobr><label><input type="radio" name="courseinit_control" value="'.
+        $r->print('<span class="LC_nobreak"><label><input type="radio" name="courseinit_control" value="'.
                    $choice.'"'.$chkstring.'/>'.$$initpage{$choice}.
-                   '&nbsp;&nbsp;</label></nobr>');
+                   '&nbsp;&nbsp;</label></span>');
     }
     $r->print('<br /><br />'.&mt('If').' '.$$initpage{'coursespecific'}.
               ' - <br />'.$lt{'chce'}.": \n");
@@ -623,9 +952,9 @@ END
         if (($choice eq $current) && ($control eq 'coursespecific')) {
             $chkstring = ' checked="checked" ';
         }
-        $r->print('<nobr><label><input type="radio" name="courseinit_page" value="'.
+        $r->print('<span class="LC_nobreak"><label><input type="radio" name="courseinit_page" value="'.
                   $choice.'"'.$chkstring.'/>'.$$initpage{$choice}.
-                  '&nbsp;&nbsp;</label></nobr>');
+                  '&nbsp;&nbsp;</label></span>');
     }
     $r->print('<br /><br /><input type="submit" name="display" value="'.
                $lt{'moce'}.'" /></form>');
@@ -656,27 +985,41 @@ sub display_launcher {
     my ($r,$action,$refpage,$checkallowed,$show,$headings,$res_title,
         $tograde,$ungraded,$bombs,$bombed,$changed,$warnings,$triggered,
         $newdiscussions,$unread,$msgcount,$newmsgs,$critmsgcount,$critmsgs,
-        $interval,$countunread) = @_;
+        $interval,$countunread,$expired,$expirecount,$activated,$activecount,
+        $crstype,$itemserror,$loggedin,$logincount,$sessions,$sessioncount,
+        $classlist) = @_;
 
     if ($$checkallowed{$action}) {
-        &start_box($r,$show,$headings,$action,$refpage,$action);
+        &start_box($r,$show,$headings,$action,$refpage);
         if ($$show{$action}) {
             if ($action eq 'handgrading') {    # UNGRADED ITEMS
-                &display_handgrade($r,$tograde,$ungraded);
+                &display_handgrade($r,$tograde,$ungraded,$itemserror);
             } elsif ($action eq 'haserrors') { # BOMBS
-                &display_haserrors($r,$bombs,$bombed,$res_title);
+                &display_haserrors($r,$bombs,$bombed,$res_title,$itemserror);
             } elsif ($action eq 'versionchanges') { # VERSION CHANGES
-                &display_versionchanges($r,$changed,$res_title,$interval);
+                &display_versionchanges($r,$changed,$res_title,$interval->{'versions'},$itemserror);
             } elsif ($action eq 'abovethreshold') { # DEGDIFF/AV. TRIES TRIGGERS
                 &display_abovethreshold($r,$refpage,$warnings,$triggered,
-					$res_title);
+					$res_title,$itemserror,$checkallowed);
             } elsif ($action eq 'coursediscussion') { # UNREAD COURSE DISCUSSION
                 &display_coursediscussion($r,$newdiscussions,$unread,
-                                $countunread,$res_title);
+                                $countunread,$res_title,$itemserror);
             } elsif ($action eq 'coursenormalmail') { # NORMAL MESSAGES
                 &display_coursenormalmail($r,$msgcount,$newmsgs);
             } elsif ($action eq 'coursecritmail') { # CRITICAL MESSAGES
                 &display_coursecritmail($r,$critmsgcount,$critmsgs);
+            } elsif ($action eq 'newroles') { # ACTIVATED ROLES
+                &display_rolechanges($r,$activecount,$activated,$interval->{'newroles'},
+                                     $crstype,$classlist);
+            } elsif ($action eq 'oldroles') { # EXPIRED ROLES
+                &display_rolechanges($r,$expirecount,$expired,$interval->{'oldroles'},
+                                     $crstype,$classlist);
+            } elsif ($action eq 'crslogin') { #LAST LOGIN
+                &display_activity($r,'logins',$logincount,$loggedin,$interval->{'crslogin'},
+                                   $crstype,$classlist);
+            } elsif ($action eq 'sessions') { #ACTIVE SESSIONS
+                &display_activity($r,'sessions',$sessioncount,$sessions,$interval->{'sessions'},
+                                  $crstype,$classlist);
             }
         }
         &end_box($r);
@@ -687,8 +1030,12 @@ sub display_launcher {
 sub getitems {
     my ($unread,$ungraded,$bombed,$triggered,$changed,$newdiscussions,
         $tograde,$bombs,$warnings,$threshold,$cdom,$crs,$res_title,$show,
-        $starttime,$countunread) = @_;
+        $starttime,$countunread,$checkallowed) = @_;
     my $navmap = Apache::lonnavmaps::navmap->new();
+    if (!defined($navmap)) {
+        my $itemserror = '<span class="LC_warning">'.&mt('An error occurred retrieving information about the course.').'<br />'.&mt('It is recommended that you [_1]re-select the course[_2].','<a href="/adm/roles">','</a>').'</span>';
+        return $itemserror;
+    }
     # force retrieve Resource to seed the part id cache we'll need it later
     my @allres=$navmap->retrieveResources(undef,
                      sub {if ($_[0]->is_problem) { $_[0]->parts();} return 1;});
@@ -743,10 +1090,11 @@ sub getitems {
 # Maxtries and degree of difficulty for problem parts, unless handgradeable
         if ($$show{'abovethreshold'}) {  
             &check_thresholds($resource,$symb,\%resourcetracker,
-			      $triggered,$threshold,$warnings);
+			      $triggered,$threshold,$warnings,
+                              $checkallowed);
         }
-
     }
+    return; 
 }
 
 sub check_discussions {
@@ -775,12 +1123,28 @@ sub check_discussions {
 sub check_handgraded {
     my ($resource,$symb,$title,$cdom,$cnum,$ungraded,$tograde) = @_;
     if ($resource->is_problem()) {
-        my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
+        my ($handgradeable,$is_task);
         my $partlist=$resource->parts();
-        my $handgradeable;
-        foreach my $part (@$partlist) {
-            if ($resource->handgrade($part) eq 'yes') {
-                $handgradeable=1; last;
+        if ($resource->is_task()) {
+            $is_task = 1;
+            foreach my $part (@$partlist) {
+                if ($resource->handgrade($part) eq 'yes') {
+                    $handgradeable=1;
+                    last;
+                }
+            }
+        } else {
+            foreach my $part (@$partlist) {
+                my @types = $resource->responseType($part);
+                if (grep(/^essay$/,@types)) {
+                    $handgradeable=1;
+                    last;
+                } elsif (grep(/^custom$/,@types)) {
+                    if ($resource->handgrade($part) eq 'yes') {
+                        $handgradeable=1;
+                        last;
+                    }
+                }
             }
         }
         if ($handgradeable) {
@@ -789,6 +1153,7 @@ sub check_handgraded {
             if (@ungraded > 0) {
                 $$ungraded{$symb}{count} = scalar(@ungraded);
                 $$ungraded{$symb}{title} = $title;
+                $$ungraded{$symb}{is_task} = $is_task;
                 if ($resource->encrypted()) {
                     $$ungraded{$symb}{'enclink'} = $resource->link();
                     $$ungraded{$symb}{'encsymb'} = $resource->shown_symb();
@@ -816,7 +1181,8 @@ sub check_bombed {
 }
 
 sub check_thresholds {
-    my ($resource,$symb,$resourcetracker,$triggered,$threshold,$warnings) = @_;
+    my ($resource,$symb,$resourcetracker,$triggered,$threshold,$warnings,
+        $checkallowed) = @_;
 # Compile maxtries and degree of difficulty for problem parts, unless handgradeable
     my @parts = @{$resource->parts()};
     my %stats;
@@ -826,6 +1192,9 @@ sub check_thresholds {
         if ($resource->handgrade($part) eq 'yes') {
             next;
         }
+        if ($resource->is_anonsurvey($part)) {
+            next;
+        }
         if ($resource->is_survey($part)) {
             next;
         }
@@ -848,6 +1217,7 @@ sub check_thresholds {
             $av_attempts = $attempts/$users;
             $av_attempts = sprintf("%.2f",$av_attempts);
         }
+        &Apache::lonnet::statslog($symb,$part,$users,$av_attempts,$degdiff);
         if ((($degdiff ne '' && $degdiff >= $$threshold{'degdiff'}) || ($av_attempts ne '' && $av_attempts >= $$threshold{'av_attempts'})) && ($users >= $$threshold{'numstudents'})) {
             $stats{$part}{degdiff} = $degdiff;
             $stats{$part}{attempts} = $av_attempts;
@@ -869,17 +1239,21 @@ sub check_thresholds {
                 my $resettitle = 'title_'.&escape($symb."\0".$part);
                 if (@parts > 1) {
                     $$triggered{$symb}{text}[$partcount] = '
-                     <td>part - '.$part.'</td>';
+                     <td>'.&mt('part - ').$part.'</td>';
                 } else {
                     $$triggered{$symb}{text}[$partcount] = '
-                     <td>single part</td>';
+                     <td>'.&mt('single part').'</td>';
                 }
                 $$triggered{$symb}{text}[$partcount] .= '
                      <td>'.$stats{$part}{users}.'</td>
                      <td>'.$stats{$part}{attempts}.'</td>
                      <td>'.$stats{$part}{degdiff}.'</td>
-                     <td>'.$lastreset{$part}.'</td>
-                     <td><input type="checkbox" name="'.$resetname.'" /><input type="hidden" name="'.$resettitle.'" value="'.&escape($$triggered{$symb}{title}).'" /></td>';
+                     <td>'.$lastreset{$part}.'</td>';
+                if ($checkallowed->{'resetcounters'}) {
+                    $$triggered{$symb}{text}[$partcount] .=
+                        '<td><input type="checkbox" name="'.$resetname.'" />'.
+                        '<input type="hidden" name="'.$resettitle.'" value="'.&escape($$triggered{$symb}{title}).'" /></td>';
+                }
                 $partcount ++;
             }
             $$triggered{$symb}{numparts} = $partcount;
@@ -901,7 +1275,7 @@ sub get_curr_thresholds {
     my $thresholdcount = 0;
     my ($tmp) = %thresholdsettings;
     unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
-        foreach my $item (keys %{$threshold}) { 
+        foreach my $item (keys(%{$threshold})) { 
             if (exists($thresholdsettings{$cid.':threshold_'.$item})) {
                 $$threshold{$item} = 
                              $thresholdsettings{$cid.':threshold_'.$item};
@@ -916,7 +1290,7 @@ sub get_curr_thresholds {
                                               $cdom,$crs,'internal.threshold');
     my ($temp) = %coursesettings;
     unless ($temp =~ /^(con_lost|error|no_such_host)/i) {  
-        foreach my $item (keys %{$threshold}) {
+        foreach my $item (keys(%{$threshold})) {
             unless (exists($thresholdsettings{$cid.':threshold_'.$item})) {
                 if (exists($coursesettings{'internal.threshold_'.$item})) {
                     $$threshold{$item} = 
@@ -941,7 +1315,11 @@ sub get_current {
 }
 
 sub process_reset {
-    my ($dom,$crs) = @_;
+    my ($dom,$crs,$checkallowed) = @_;
+    if (!$checkallowed->{'resetcounters'}) {
+        return '<b>'.&mt('You do not have the required privileges to reset counters').
+               '</b><br />';
+    }
     my $result = '<b>'.&mt('Counters reset for following problems (and parts):').
                            '</b><br />';
     my @agg_types = ('attempts','users','correct');
@@ -982,10 +1360,14 @@ sub process_reset {
 
 sub process_update {
     my ($uname,$udom,$threshold_titles) = @_;
-    my $setoutput = '<b>Changes to threshold(s) for problem tracking:</b><br />';
-    foreach (keys %env) {
-        next if ($_!~/^form\.(.+)\_setparmval$/);
-        my $name  = $1;
+    my $setoutput = '<b>'.&mt('Changes to threshold(s) for problem tracking:').'</b><br/><br />';
+    foreach my $key (keys(%env)) {
+        my $name;
+        if ($key =~/^form\.(.+)\_setparmval$/) {
+            $name  = $1;
+        } else {
+            next;
+        }
         my $value = $env{'form.'.$name.'_value'};
         if ($name && defined($value) && ($value ne '')) {
             my $put_result = &Apache::lonnet::put('nohist_whatsnew',
@@ -993,45 +1375,52 @@ sub process_update {
            
             my ($shortname) = ($name =~ /^\Q$env{'request.course.id'}\E:threshold_(.+)$/);
             if ($put_result eq 'ok') {
-                $setoutput.=&mt('Set threshold for [_1] to [_2]',
+                $setoutput.= &Apache::lonhtmlcommon::confirm_success(&mt('Set threshold for [_1] to [_2]',
 				'<b>'.$$threshold_titles{$shortname}.'</b>',
-				'<b>'.$value.'</b>').'<br />';
+				'<b>'.$value.'</b>').'<br />');
 	    } else {
-                $setoutput.=&mt('Unable to set threshold for [_1] to [_2] due to [_3].',
+                $setoutput.= &Apache::lonhtmlcommon::confirm_success(&mt('Unable to set threshold for [_1] to [_2] due to [_3].',
 				'<b>'.$name.'</b>','<b>'.$value.'</b>',
-				'<tt>'.$put_result.'</tt>').'<br />';
+				'<tt>'.$put_result.'</tt>').'<br />',1);
             }
         }
     }
-    return $setoutput;
+    return &Apache::loncommon::confirmwrapper($setoutput);
 }
 
 sub getnormalmail {
     my ($newmsgs) = @_;
-# Check for unread mail in course
+# Check for unread messages in user's INBOX (which were sent in context of current course).
     my $msgcount = 0;
-
-    my @messages = sort(&Apache::lonnet::getkeys('nohist_email'));
-    foreach my $message (@messages) {
-	my $msgid=&escape($message);
-        my ($sendtime,$shortsubj,$fromname,$fromdom,$status,$fromcid)=
-            &Apache::lonmsg::unpackmsgid($msgid);
-        if (($fromcid) && ($fromcid eq $env{'request.course.id'})) {
-            if (defined($sendtime) && $sendtime!~/error/) {
-                my $numsendtime = $sendtime;
-                $sendtime = &Apache::lonlocal::locallocaltime($sendtime);
-                if ($status eq 'new') {
-                    $msgcount ++;
-                    if ($shortsubj eq '') {
-                        $shortsubj = &mt('No subject');
+    my @messages = &Apache::lonnet::getkeys('nohist_email');
+    return $msgcount if (!@messages);
+    my %emailstatus = &Apache::lonnet::dump('email_status');
+    foreach my $msgid (sort(@messages)) {
+        if ((!$emailstatus{$msgid}) || ($emailstatus{$msgid} eq 'new')) {
+            my $skipstatus;
+            if ($emailstatus{$msgid} eq 'new') {
+                $skipstatus = 1;
+            }
+            my $esc_msgid = &escape($msgid);
+            my ($sendtime,$shortsubj,$fromname,$fromdom,$status,$fromcid)=
+                &Apache::lonmsg::unpackmsgid($esc_msgid,undef,$skipstatus,undef,
+                                             $env{'request.course.id'});
+            if (($fromcid) && ($fromcid eq $env{'request.course.id'})) {
+                if (defined($sendtime) && $sendtime!~/error/) {
+                    if (($emailstatus{$msgid} eq 'new') || ($status eq 'new')) {
+                        $sendtime = &Apache::lonlocal::locallocaltime($sendtime);
+                        $msgcount ++;
+                        if ($shortsubj eq '') {
+                            $shortsubj = &mt('No subject');
+                        }
+                        push(@{$newmsgs}, {
+                            msgid    => $esc_msgid,
+                            sendtime => $sendtime,
+                            shortsub => $shortsubj,
+                            from     => $fromname,
+                            fromdom  => $fromdom
+                            });
                     }
-                    push(@{$newmsgs}, {
-                        msgid    => $msgid,
-                        sendtime => $sendtime,
-                        shortsub => $shortsubj,
-                        from     => $fromname,
-                        fromdom  => $fromdom
-                        });
                 }
             }
         }
@@ -1041,23 +1430,24 @@ sub getnormalmail {
 
 sub getcritmail {
     my ($critmsgs) = @_; 
-# Check for critical messages in course
+# Check for critical messages which were sent in context of current course.
     my %what=&Apache::lonnet::dump('critical');
     my $result = '';
     my $critmsgcount = 0;
     foreach my $msgid (sort(keys(%what))) {
+        my $esc_msgid = &escape($msgid);
         my ($sendtime,$shortsubj,$fromname,$fromdom,$status,$fromcid)=
-            &Apache::lonmsg::unpackmsgid($msgid);
+            &Apache::lonmsg::unpackmsgid($esc_msgid,undef,1,undef,
+                                         $env{'request.course.id'});
         if (($fromcid) && ($fromcid eq  $env{'request.course.id'})) {
             if (defined($sendtime) && $sendtime!~/error/) {
-                my $numsendtime = $sendtime;
                 $sendtime = &Apache::lonlocal::locallocaltime($sendtime);
                 $critmsgcount ++;
                 if ($shortsubj eq '') {
                     $shortsubj = &mt('No subject');
                 }
                 push(@{$critmsgs}, {
-                        msgid    => $msgid,
+                        msgid    => $esc_msgid,
                         sendtime => $sendtime,
                         shortsub => $shortsubj,
                         from     => $fromname,
@@ -1069,6 +1459,310 @@ sub getcritmail {
     return $critmsgcount;
 }
 
+sub getexpired {
+    my ($rolechgs,$rolechgtime,$status,$classlist) = @_;
+    my $expirecount = &getrolechanges($rolechgs,$rolechgtime,$status,$classlist);
+    return $expirecount;
+}
+
+sub getactivated {
+    my ($rolechgs,$rolechgtime,$status,$classlist) = @_;
+    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+    my $now = time();
+    my $context = 'course';
+    my ($permission,$allowed) =
+        &Apache::lonuserutils::get_permission($context);
+    my $viewablesec = &Apache::lonuserutils::viewable_section($permission);
+    my %changes=&Apache::lonnet::dump('nohist_rolelog',$cdom,$cnum);
+    my (%stucounted,%advcounted);
+    my $activatedcount = 0;
+    if (keys(%changes) > 0) {
+        foreach my $chg (keys(%changes)) {
+            if (ref($changes{$chg}) eq 'HASH') {
+                next if ($changes{$chg}{'delflag'});
+                if ($rolechgtime > 0) {
+                    next if ($changes{$chg}{'exe_time'} < $rolechgtime);
+                }
+                if ($changes{$chg}{'exe_time'}) {
+                    my $timestamp = $changes{$chg}{'exe_time'};
+                    if (ref($changes{$chg}{'logentry'}) eq 'HASH') {
+                        my $end = $changes{$chg}{'logentry'}{'end'};
+                        next if ($end && $end <= $now);
+                        my $start = $changes{$chg}{'logentry'}{'start'};
+                        next if ($start >= $timestamp);
+                        my $section = $changes{$chg}{'logentry'}{'section'};
+                        if (($viewablesec ne '') && ($section ne '')) {
+                            next if ($viewablesec ne $section);
+                        }
+                        my $role = $changes{$chg}{'logentry'}{'role'};
+                        my $uname = $changes{$chg}{'uname'};
+                        my $udom = $changes{$chg}{'udom'};
+                        if ($role eq 'st') {
+                            $stucounted{$uname.':'.$udom.':'.$section} = $start.':'.$end;
+                        } else {
+                            $advcounted{$uname.':'.$udom.':'.$role.':'.$section} = $start.':'.$end;
+                        }
+                        my %chginfo = (
+                                       'section' => $section,
+                                       'uname'   => $uname,
+                                       'udom'    => $udom,
+                                       'role'    => $role,
+                                       'status'  => $status,
+                        );
+                        $activatedcount ++;
+                        push (@{$rolechgs->{$timestamp}},\%chginfo);
+                    }
+                }
+            }
+        }
+    }
+    $activatedcount += &getrolechanges($rolechgs,$rolechgtime,$status,$classlist,\%stucounted,
+                                       \%advcounted);
+    return $activatedcount;
+}
+
+sub getrolechanges {
+    my ($rolechgs,$rolechgtime,$status,$classlist,$stucountref,$advcountref) = @_;
+    my (%stucounted,%advcounted);
+    if (ref($stucountref) eq 'HASH') {
+        %stucounted = %{$stucountref};
+    }
+    if (ref($advcountref) eq 'HASH') {
+        %advcounted = %{$advcountref};
+    }
+    my $withsec = 1;
+    my $hidepriv = 1;
+    my $context = 'course';
+    my @statuses = ($status);
+    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+    my $now = time();
+    my ($permission,$allowed) =
+        &Apache::lonuserutils::get_permission($context);
+    my $viewablesec = &Apache::lonuserutils::viewable_section($permission);
+    my $secidx = &Apache::loncoursedata::CL_SECTION();
+    my $startidx = &Apache::loncoursedata::CL_START();
+    my $endidx = &Apache::loncoursedata::CL_END();
+    my $rolechgcount = 0;
+    if (ref($classlist) eq 'HASH') {
+        foreach my $key (keys(%{$classlist})) {
+            my ($userstatus,$eventtime);   
+            my $student = $classlist->{$key};
+            if (ref($student) eq 'ARRAY') {
+                my $start = $student->[$startidx];
+                my $end = $student->[$endidx];
+                my $sec = $student->[$secidx]; 
+                my ($stuname,$studom) = split(/:/,$key);
+                if ($status eq 'active') {
+                    if (exists($stucounted{$key.':'.$sec})) {
+                        next;
+                    }
+                }
+                if (($end == 0) || ($end > $start)) {
+                    if ($start <= $now) {
+                        if ($end && $end < $now) {
+                            if ($rolechgtime > 0) {
+                                if ($end > $rolechgtime) {
+                                    $userstatus = 'previous';
+                                }
+                            } else {
+                                $userstatus = 'previous';
+                            }
+                        } else {
+                            if ($rolechgtime > 0) {
+                                if ($start >= $rolechgtime) {
+                                    $userstatus = 'active';
+                                }
+                            } else {
+                                $userstatus = 'active';
+                            }
+                        }
+                    }
+                }
+                next if ($userstatus ne $status);
+                if ($status eq 'active') {
+                    $eventtime = $start;
+                } else {
+                    $eventtime = $end;
+                }
+                if (($viewablesec ne '') && ($sec ne '')) {
+                    next if ($viewablesec ne $sec);
+                }
+                my %chginfo = (
+                                'section' => $sec,
+                                'uname'   => $stuname,
+                                'udom'    => $studom,
+                                'role'    => 'st', 
+                                'status'  => $userstatus,
+                              );
+                $rolechgcount ++;
+                push(@{$rolechgs->{$eventtime}},\%chginfo);
+            }
+        }
+    }
+    my %advrolehash = &Apache::lonnet::get_my_roles($cnum,$cdom,undef,
+                              \@statuses,undef,undef,$withsec,$hidepriv);
+    foreach my $item (keys(%advrolehash)) {
+        my ($userstatus,$eventtime);
+        my ($uname,$udom,$role,$section) = split(/:/,$item,-1);
+        my ($start,$end) = split(/:/,$advrolehash{$item});
+        if ($start eq '-1' && $end eq '-1') {
+            next;
+        } else {
+            if ($status eq 'active') {
+                if (exists($advcounted{$item})) {
+                    next;
+                }
+            }
+            if (($end == 0) || ($end > $start)) {
+                if ($start <= $now) {
+                    if ($end && $end < $now) {
+                        if ($rolechgtime > 0) {
+                            if ($end > $rolechgtime) {
+                                $userstatus = 'previous';
+                            }
+                        } else {
+                            $userstatus = 'previous';
+                        }
+                    } else {
+                        if ($rolechgtime > 0) {
+                            if ($start >= $rolechgtime) {
+                                $userstatus = 'active';
+                            }
+                        } else {
+                            $userstatus = 'active';
+                        }
+                    }
+                }
+            }
+            next if ($userstatus ne $status);
+            if ($status eq 'active') {
+                $eventtime = $start;
+            } else {
+                $eventtime = $end;
+            }
+        }
+        if (($viewablesec ne '') && ($section ne '')) {
+            next if ($viewablesec ne $section);
+        }
+        my %chginfo = ( 
+                        'section' => $section,
+                        'uname'   => $uname,
+                        'udom'    => $udom,
+                        'role'    => $role,
+                        'status'  => $userstatus,    
+                      );
+        $rolechgcount ++; 
+        push (@{$rolechgs->{$eventtime}},\%chginfo); 
+    }
+    return $rolechgcount;
+}
+
+sub getloggedin {
+    my ($cdom,$crs,$lastlogins,$starttime) = @_;
+    my $context = 'course';
+    my ($permission,$allowed) =
+        &Apache::lonuserutils::get_permission($context);
+    my $viewablesec = &Apache::lonuserutils::viewable_section($permission);
+    my %crslogins=&Apache::lonnet::dump('nohist_crslastlogin',$cdom,$crs);
+    my $logincount = 0;
+    my ($tmp) = keys(%crslogins);
+    unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
+        if (keys(%crslogins) > 0) {
+            foreach my $key (keys(%crslogins)) {
+                my ($uname,$udom,$section,$role) = split(/:/,$key);
+                my $eventtime = $crslogins{$key};
+                if ($eventtime > $starttime) {
+                    if (($viewablesec ne '') && ($section ne '')) {
+                        next if ($viewablesec ne $section);
+                    }
+                    my %chginfo = (
+                                   'section' => $section,
+                                   'uname'   => $uname,
+                                   'udom'    => $udom,
+                                   'role'    => $role,
+                    );
+                    $logincount ++;
+                    push (@{$lastlogins->{$eventtime}},\%chginfo);
+                }
+            }
+        }
+    }
+    return $logincount;
+}
+
+sub getsessions {
+    my ($cdom,$cnum,$sessions,$lastactive,$classlist) = @_;
+    my $context = 'course';
+    my ($permission,$allowed) =
+        &Apache::lonuserutils::get_permission($context);
+    my %crs_sessions = &Apache::lonnet::get_course_sessions($cnum,$cdom,$lastactive);
+    my $sessioncount = 0;
+    if (keys(%crs_sessions) > 0) {
+        if (ref($classlist) eq 'HASH') {
+            my $viewablesec = &Apache::lonuserutils::viewable_section($permission);
+            my $secidx = &Apache::loncoursedata::CL_SECTION();
+            my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'_'.$cnum,1);
+            my %personnel;
+            foreach my $role (sort(keys(%coursepersonnel))) {
+                my ($rolecode,$section);
+                if ($role =~ /:/) {
+                    ($rolecode,$section) = split(/:/,$role);
+                } else {
+                    $rolecode = $role;
+                }
+                if ($viewablesec ne '') {
+                    next if ($viewablesec ne $section);
+                }
+                foreach my $user (split(/\,/,$coursepersonnel{$role})) {
+                    push(@{$personnel{$user}{$rolecode}},$section);
+                }
+            }
+            foreach my $key (keys(%crs_sessions)) {
+                if (exists($classlist->{$key})) {
+                    my $student = $classlist->{$key};
+                    my $section = $student->[$secidx];
+                    my $lastaccess = $crs_sessions{$key};
+                    if ($viewablesec ne '') {
+                        next if ($viewablesec ne $section);
+                    }
+                    my ($stuname,$studom) = split(/:/,$key);
+                    my %info = (
+                                 'section' => $section,
+                                 'role'    => 'st',
+                                 'uname'   => $stuname,
+                                 'udom'    => $studom,
+                    );
+                    $sessioncount ++;
+                    push(@{$sessions->{$lastaccess}},\%info);
+                } elsif (exists($personnel{$key})) {
+                    my $lastaccess = $crs_sessions{$key};
+                    my ($uname,$udom) = split(/:/,$key);
+                    if (ref($personnel{$key}) eq 'HASH') {
+                        my ($showrole,$showsec);
+                        foreach my $possrole ('cc','co','in','ta','ep','ad','st') {
+                            if (exists($personnel{$key}{$possrole})) {
+                                $showrole = $possrole;
+                                $showsec = join(', ',@{$personnel{$key}{$possrole}});
+                                last;
+                            }
+                        }
+                        my %info = (
+                                     'section' => $showsec,
+                                     'role'    => $showrole,
+                                     'uname'   => $uname,
+                                     'udom'    => $udom,
+                        );
+                        $sessioncount ++;
+                        push(@{$sessions->{$lastaccess}},\%info);
+                    }
+                }
+            }
+        }
+    }
+    return $sessioncount;
+}
 
 sub checkversions {
     my ($cdom,$crs,$navmap,$changed,$starttime) = @_;
@@ -1086,7 +1780,7 @@ sub checkversions {
                                                      'lastrevisiondate');
                     $revdate =  &Apache::lonlocal::locallocaltime($revdate);
                     my $linkurl=&Apache::lonnet::clutter($key);
-                    my $usedversion=$navmap->usedVersion('version_'.$linkurl);
+                    my $usedversion=$navmap->usedVersion($linkurl);
                     my @resources = $navmap->getResourceByUrl($linkurl,1);
                     if (($usedversion) && ($usedversion ne 'mostrecent')) {
                         $version = $usedversion;     
@@ -1111,7 +1805,7 @@ sub checkversions {
 }
 
 sub display_handgrade {
-    my ($r,$tograde,$ungraded) = @_;
+    my ($r,$tograde,$ungraded,$itemserror) = @_;
     my %lt = &Apache::lonlocal::texthash(
                         'prna' => 'Problem Name',
                         'nmun' => 'Number ungraded',
@@ -1125,22 +1819,35 @@ sub display_handgrade {
         foreach my $res (@{$tograde}) {
             $rowNum ++;
             my $css_class = $rowNum%2?' class="LC_odd_row"':'';
-            my ($map,$id,$url)=&Apache::lonnet::decode_symb($res);
-            my $linkurl=&Apache::lonnet::clutter($url);
-            $linkurl .= '?symb='.&escape($res);
-            if ($$ungraded{$res}{'enclink'}) {
-                $linkurl = 
-                    $$ungraded{$res}{'enclink'}.'?symb='.$$ungraded{$res}{'encsymb'};
-            } 
+            my $linkurl;
+            if ($$ungraded{$res}{'is_task'}) {
+                my ($map,$id,$url)=&Apache::lonnet::decode_symb($res);
+                $linkurl=&Apache::lonnet::clutter($url);
+                $linkurl .= '?symb='.&escape($res);
+                if ($$ungraded{$res}{'enclink'}) {
+                    $linkurl =
+                        $$ungraded{$res}{'enclink'}.'?symb='.$$ungraded{$res}{'encsymb'};
+                }
+            } else {
+                $linkurl='/adm/grades';
+                if ($$ungraded{$res}{'enclink'}) {
+                    $linkurl.='?symb='.$$ungraded{$res}{'encsymb'};
+                } else {
+                    $linkurl.='?symb='.&escape($res);
+                }
+                $linkurl.='&amp;command=ungraded';
+            }
             $r->print('<tr'.$css_class.'><td><a href="'.$linkurl.'">'.$$ungraded{$res}{title}.'</a></td><td class="LC_right_item">'.$$ungraded{$res}{count}.'</td></tr>');
         }
+    } elsif ($itemserror) {
+        $r->print('<tr class="LC_empty_row"><td>'.$itemserror.'</td></tr>');
     } else {
         $r->print('<tr class="LC_empty_row"><td>'.$lt{'nopr'}.'</td></tr>');
     }
 }
 
 sub display_haserrors {
-    my ($r,$bombs,$bombed,$res_title) = @_;
+    my ($r,$bombs,$bombed,$res_title,$itemserror) = @_;
     my $bombnum = 0;
     my %lt = &Apache::lonlocal::texthash(
                                    reso => 'Resource',
@@ -1159,6 +1866,8 @@ sub display_haserrors {
                       '</td><td class="LC_right_item">'.
                       $$bombed{$bomb}{errorcount}.'</td></tr>');
         }
+    } elsif ($itemserror) {
+        $r->print('<tr class="LC_empty_row"><td>'.$itemserror.'</td></tr>');
     } else {
         $r->print('<tr class="LC_empty_row"><td>'.$lt{'noer'}.'</td></tr>');
     }
@@ -1166,7 +1875,7 @@ sub display_haserrors {
 }
 
 sub display_abovethreshold {
-    my ($r,$refpage,$warnings,$triggered,$res_title) = @_;
+    my ($r,$refpage,$warnings,$triggered,$res_title,$itemserror,$checkallowed) = @_;
     my %lt = &Apache::lonlocal::texthash(
                  reso => 'Resource',
                  part => 'Part',
@@ -1180,16 +1889,16 @@ sub display_abovethreshold {
     );
     if (@{$warnings} > 0) {
         @{$warnings} = sort { &cmp_title($a,$b,$res_title) } @{$warnings};
-        $r->print('<form name="reset_tracking" method="post" action="/adm/whatsnew">'.
-                ' <input type="hidden" name="command" value="reset" />'."\n".
-                ' <input type="hidden" name="refpage" value="'.$refpage.'" />'.
-                "\n");
         $r->print('<tr class="LC_info_row">'.
-		  '<td class="LC_left_item">'.$lt{'reso'}.'</td>'.
+		  '<td class="LC_left_item">'.$lt{'reso'}.
+                  '<input type="hidden" name="command" value="" /></td>'.
 		  '<td>'.$lt{'part'}.'</td><td>'.$lt{'nust'}.'</td>'.
 		  '<td>'.$lt{'avat'}.'</td><td>'.$lt{'dedi'}.'</td>'.
-		  '<td>'.$lt{'lare'}.'</td><td  class="LC_right_item">'.
-                  $lt{'reco'}.'</td></tr>');
+		  '<td>'.$lt{'lare'}.'</td>');
+        if ($checkallowed->{'resetcounters'}) {
+            $r->print('<td  class="LC_right_item">'.$lt{'reco'}.'</td>');
+        }
+        $r->print('</tr>');
 	my $row;
         foreach my $res (@{$warnings}) {
 	    $row++;
@@ -1215,26 +1924,29 @@ sub display_abovethreshold {
             if (ref($$triggered{$res}{text}) eq 'ARRAY') {
                 if (@{$$triggered{$res}{text}} > 1) {
                     for (my $i=1; $i<@{$$triggered{$res}{text}}; $i++) {
-                        $r->print('<tr class="'.$css_class.'">'.
+                        $r->print('<tr '.$css_class.'>'.
                                   $$triggered{$res}{text}[$i].'</tr>');
                     }
                 }
             }
         }
-        $r->print('<tr class="LC_info_row"><td colspan="7" class="LC_right_item"><br /><input type="submit" name="counters" value="'.$lt{'rese'}.'" /></td></tr></form>');
+        if ($checkallowed->{'resetcounters'}) {
+            $r->print('<tr class="LC_info_row"><td colspan="7" class="LC_right_item"><br /><input type="button" name="counters" value="'.$lt{'rese'}.'" onclick="javascript:thresholdreset();" /></td></tr>');
+        }
+    } elsif ($itemserror) {
+        $r->print('<tr class="LC_empty_row"><td>'.$itemserror.'</td></tr>');
     } else {
         $r->print('<tr class="LC_empty_row"><td>'.$lt{'nopr'}.'</td></tr>');
     }
 }
 
 sub display_versionchanges {
-    my ($r,$changed,$res_title,$interval) = @_;
+    my ($r,$changed,$res_title,$interval,$itemserror) = @_;
     my %lt = &Apache::lonlocal::texthash(
         'reso' => 'Resource',
         'revd' => 'Last revised',
         'newv' => 'New version',
         'veru' => 'Version used',
-        'noup' => 'No updated versions', 
     );
     if (keys(%{$changed}) > 0) {
         $r->print('<tr class="LC_info_row"><td class="LC_left_item">'.
@@ -1256,15 +1968,186 @@ sub display_versionchanges {
                       $$changed{$item}{'current'}.'</td><td>'.
                       $$changed{$item}{'version'}.'</td></tr>');
         }
+    } elsif ($itemserror) {
+        $r->print('<tr class="LC_empty_row"><td>'.$itemserror.'</td></tr>');
     } else {
-        $r->print('<tr class="LC_empty_row"><td>'.$lt{'noup'}.
-                  ' '.$interval.'</td></tr>');
+        $r->print('<tr class="LC_empty_row"><td>'
+                 .&mt('No '.$interval).'</td></tr>');
+    }
+    return;
+}
+
+sub display_rolechanges {
+    my ($r,$chgcount,$changed,$interval,$crstype,$classlist) = @_;
+    my $now = time();
+    my %lt = &Apache::lonlocal::texthash(
+        'user'  => 'User',
+        'tich'  => 'Time of change',
+        'role'  => 'Role',
+        'sec'   => 'Section',
+        'status'  => 'Status',
+    );
+    if ($chgcount) {
+        $r->print('<tr class="LC_info_row">'.
+                  '<td class="LC_left_item">'.$lt{'tich'}.'</td>'.
+                  '<td class="LC_left_item">'.$lt{'user'}.'</td>'.
+                  '<td class="LC_left_item">'.$lt{'role'}.'</td>'.
+                  '<td class="LC_left_item">'.$lt{'sec'}.'</td>'.
+                  '<td class="LC_left_item">'.$lt{'status'}.'</td></tr>');
+        if (ref($changed) eq 'HASH') {
+            my @changes = sort { $b <=> $a } (keys(%{$changed}));
+            my $changenum = 0;
+            my $fullnameidx = &Apache::loncoursedata::CL_FULLNAME();
+            foreach my $item (@changes) {
+                if (ref($changed->{$item}) eq 'ARRAY') {
+                    foreach my $chg (@{$changed->{$item}}) {
+                        if (ref($chg) eq 'HASH') {
+                            my $section;
+                            my $role = 
+                                &Apache::lonnet::plaintext($chg->{'role'},$crstype);
+                            my $status = &mt($chg->{'status'});
+                            if ($chg->{'section'} eq '') {
+                                $section = &mt('none');
+                            } else {
+                                $section = $chg->{'section'};
+                            }
+                            my $uname = $chg->{'uname'};
+                            my $udom = $chg->{'udom'};
+                            $changenum ++;
+                            my $css_class = $changenum%2?' class="LC_odd_row"':'';
+                            my $fullname;
+                            if (ref($classlist->{$uname.':'.$udom}) eq 'ARRAY') {
+                                $fullname = $classlist->{$uname.':'.$udom}->[$fullnameidx];
+                            } else {
+                                $fullname = &Apache::loncommon::plainname($uname,$udom,'lastname');
+                            }
+                            my $link = 
+                                &Apache::loncommon::aboutmewrapper($fullname,$uname,$udom);
+                            $r->print('<tr'.$css_class.'>'.
+                                      '<td>'.&Apache::lonlocal::locallocaltime($item).'</td>'.
+                                      '<td>'.$link.'</td>'.
+                                      '<td>'.$role.'</td>'.
+                                      '<td>'.$section.'</td>'.
+                                      '<td>'.$status.'</td></tr>');
+                        }
+                    }
+                }
+            }
+        }
+    } else {
+        $r->print('<tr class="LC_empty_row"><td>'
+                 .&mt('There are no '.$interval).'</td></tr>');
+    }
+    return;
+}
+
+sub display_activity {
+    my ($r,$context,$count,$details,$interval,$crstype,$classlist) = @_;
+    return unless (ref($classlist) eq 'HASH');
+    my %lt = &Apache::lonlocal::texthash(
+        'user'   => 'User',
+        'role'   => 'Role',
+        'sec'    => 'Section',
+        'number' => 'Total number of logins',
+    );
+    my $prefix = 'login';
+    if ($context eq 'sessions') {
+        $lt{'number'} = &mt('Total number of active user sessions');
+        $lt{'active'} = &mt('Last active');
+        $prefix = 'session';
+    }
+    if ($count) {
+
+        my $hdr = '<tr class="LC_info_row" style="display:none" id="'.$prefix.'titledet">'.
+                  '<td class="LC_left_item">'.$lt{'user'}.'</td>'.
+                  '<td class="LC_left_item">'.$lt{'role'}.'</td>'.
+                  '<td class="LC_left_item">'.$lt{'sec'}.'</td>';
+        if ($context eq 'sessions') {
+            $hdr .= '<td class="LC_left_item">'.$lt{'active'}.'</td>';
+        }
+        $hdr .= '</tr>'."\n".
+                '<tr class="LC_info_row" id="'.$prefix.'titlesum">'.
+                '<td class="LC_left_item">'.$lt{'number'}.'</td>'.
+                '<td class="LC_left_item">'.$lt{'role'}.'</td>'.
+                '<td class="LC_left_item">'.$lt{'sec'};
+        my (%bylastname,%counts);
+        if (ref($details) eq 'HASH') {
+            my @items = sort { $b <=> $a } (keys(%{$details}));
+            my $num = 0;
+            my $fullnameidx = &Apache::loncoursedata::CL_FULLNAME();
+            foreach my $item (@items) {
+                if (ref($details->{$item}) eq 'ARRAY') {
+                    foreach my $user (@{$details->{$item}}) {
+                        if (ref($user) eq 'HASH') {
+                            my $section;
+                            my $role =
+                                &Apache::lonnet::plaintext($user->{'role'},$crstype);
+                            if ($user->{'section'} eq '') {
+                                $section = &mt('none');
+                            } else {
+                                $section = $user->{'section'};
+                            }
+                            $counts{$user->{'role'}}{$section} ++;
+                            my $uname = $user->{'uname'};
+                            my $udom = $user->{'udom'};
+                            my $fullname;
+                            if (ref($classlist->{$uname.':'.$udom}) eq 'ARRAY') {
+                                $fullname = $classlist->{$uname.':'.$udom}->[$fullnameidx];
+                            } else {
+                                $fullname = &Apache::loncommon::plainname($uname,$udom,'lastname');
+                            }
+                            my $link =
+                                &Apache::loncommon::aboutmewrapper($fullname,$uname,$udom);
+                            my $entry = '<td>'.$link.'</td>'.
+                                        '<td>'.$role.'</td>'.
+                                        '<td>'.$section.'</td>';
+                            if ($context eq 'sessions') {
+                                $entry .= '<td>'.&Apache::lonlocal::locallocaltime($item).'</td>';
+                            }
+                            push(@{$bylastname{$fullname}},$entry);
+                        }
+                    }
+                }
+            }
+            my $table;
+            foreach my $person (sort(keys(%bylastname))) {
+                if (ref($bylastname{$person}) eq 'ARRAY') {
+                    foreach my $item (@{$bylastname{$person}}) {
+                        $num ++;
+                        my $css_class = $num%2?' class="LC_odd_row"':'';
+                        $table .= '<tr'.$css_class.' style="display:none;"  id="'.$prefix.'det_'.$num.'">'.$item.'</tr>';
+                    }
+                }
+            }
+            my $numrow = 0;
+            foreach my $role (sort(keys(%counts))) {
+                my $showrole = &Apache::lonnet::plaintext($role,$crstype);
+                if (ref($counts{$role}) eq 'HASH') {
+                    foreach my $sec (sort { $b <=> $a } (keys(%{$counts{$role}}))) {
+                        $numrow ++;
+                        my $css_class = $numrow%2?' class="LC_odd_row"':'';
+                        $table .= '<tr '.$css_class.' id="'.$prefix.'sum_'.$numrow.'">'.
+                                  '<td>'.$counts{$role}{$sec}.'</td>'.
+                                  '<td>'.$showrole.'</td>'.
+                                  '<td>'.$sec.'</td></tr>';
+                   }
+                }
+            }
+            $r->print($hdr.'<input type="hidden" name="'.$prefix.'count" value="'.$num.
+                      '" /><input type="hidden" name="'.$prefix.'row" value="'.$numrow.
+                      '" /></td></tr>'.$table);
+        }
+    } else {
+        $r->print('<tr class="LC_empty_row"><td>'.
+                  &mt('There are no '.$interval).
+                  '<input type="hidden" name="'.$prefix.'count" value="'.$count.
+                  '." /></td></tr>');
     }
     return;
 }
  
 sub display_coursediscussion {
-    my ($r,$newdiscussions,$unread,$countunread,$res_title) = @_;
+    my ($r,$newdiscussions,$unread,$countunread,$res_title,$itemserror) = @_;
     my $lctype = lc(&Apache::loncommon::course_type());
     my %lt = &Apache::lonlocal::texthash(
                 'loca' => 'Location',
@@ -1292,9 +2175,9 @@ sub display_coursediscussion {
             my $forum_title = $$unread{$ressymb}{'title'};
             my $type = 'Resource';
             my $feedurl=&Apache::lonfeedback::get_feedurl($ressymb);
-            my $disclink = $feedurl.'?symb='.$$unread{$ressymb}{symb};
+            my $disclink = $feedurl.'?symb='.&escape($$unread{$ressymb}{symb});
             if ($feedurl =~ /bulletinboard/) {
-                $type = 'Bulletin Board';
+                $type = 'Discussion Board';
             }
             if ($$unread{$ressymb}{'enclink'}) {
                 $disclink = $$unread{$ressymb}{'enclink'}.'?symb='.$$unread{$ressymb}{'encsymb'};
@@ -1312,6 +2195,8 @@ sub display_coursediscussion {
             }
             $r->print("</tr>\n");
         }
+    } elsif ($itemserror) {
+        $r->print('<tr class="LC_empty_row"><td>'.$itemserror.'</td></tr>');
     } else {
         $r->print('<tr class="LC_empty_row"><td>'.$lt{'noun'}.'</td></tr>');
     }
@@ -1329,11 +2214,12 @@ sub display_coursenormalmail {
         foreach my $msg (@{$newmsgs}) {
             $mailcount ++;
             my $css_class = $mailcount%2?' class="LC_odd_row"':'';
-            $r->print('<tr'.$css_class.'><td>'.$mailcount.
-                      '. &nbsp;</td><td><a href="/adm/communicate">'.
-                      $msg->{'shortsub'}.'</a>&nbsp; &nbsp;</td><td>&nbsp;'.
-                      $msg->{'from'}.'@'.$msg->{'fromdom'}.'&nbsp;</td><td>'.
-                      $msg->{'sendtime'}.'</td></tr>');
+            $r->print('<tr'.$css_class.'><td>'.$mailcount
+                      .'.&nbsp;</td><td><a href="/adm/email?display='
+                      .$msg->{'msgid'}.'">'
+                      .$msg->{'shortsub'}.'</a>&nbsp;&nbsp;</td><td>&nbsp;'
+                      .$msg->{'from'}.':'.$msg->{'fromdom'}.'&nbsp;</td><td>'
+                      .$msg->{'sendtime'}.'</td></tr>');
         }
     } else {
         $r->print('<tr class="LC_empty_row"><td>'.
@@ -1356,7 +2242,7 @@ sub display_coursecritmail {
             $r->print('<tr'.$css_class.'><td>'.$mailcount.
                       '. &nbsp;</td><td><a href="/adm/email?folder=critical">'.
                       $msg->{'shortsub'}.'</a>&nbsp; &nbsp;</td><td>&nbsp;'.
-                      $msg->{'from'}.'@'.$msg->{'fromdom'}.'&nbsp;</td><td>'.
+                      $msg->{'from'}.':'.$msg->{'fromdom'}.'&nbsp;</td><td>'.
                       $msg->{'sendtime'}.'</td></tr>');
         }
     } else {
@@ -1414,24 +2300,36 @@ sub store_interval_setting {
     my ($uname,$udom,$cid,$interval_titles) = @_;
     my %interval_settings = ();
     my $result;
-    if (defined($env{'form.interval'})) {
-        $interval_settings{$cid.':interval'} = $env{'form.interval'};
+    my $context = $env{'form.intervaltype'};
+    if ($env{'form.interval'} ne '') {
+        if ($context eq 'oldroles') {
+            $interval_settings{$cid.':oldroleinterval'} = $env{'form.interval'};
+        } elsif ($context eq 'newroles') {
+            $interval_settings{$cid.':newroleinterval'} = $env{'form.interval'};
+        } elsif ($context eq 'crslogin') {
+            $interval_settings{$cid.':crslogininterval'} = $env{'form.interval'};
+        } elsif ($context eq 'sessions') {
+            $interval_settings{$cid.':sessionactivity'} = $env{'form.interval'};
+        } else {
+            $interval_settings{$cid.':interval'} = $env{'form.interval'};
+        }
         my $outcome = &Apache::lonnet::put('nohist_whatsnew',
                                              \%interval_settings,$udom,$uname);
         if ($outcome eq 'ok') {
-            $result = &mt('Interval set to version changes [_1]',
-                  '<b>'.$$interval_titles{$env{'form.interval'}}.'</b><br />');
-
+            if (ref($interval_titles->{$context}) eq 'HASH') {
+                $result = &Apache::lonhtmlcommon::confirm_success(&mt('New filter setting: [_1].','<b>'. 
+                              $interval_titles->{$context}->{$env{'form.interval'}}.'</b>').'<br />');
+            }
         } else {
 	    my $lctype = lc(&Apache::loncommon::course_type());
-            &Apache::lonnet::logthis('Error saving whatsnew interval setting'.
+            &Apache::lonnet::logthis('Error saving whatsnew '.$context.' interval setting'.
                 ' '.$outcome.' for '.$uname.':'.$udom.' in '.$lctype.' '.$cid);
-            $result = &mt('Unable to set interval to [_1] due to [_2].',
-                         '<b>'.$$interval_titles{$env{'form.interval'}}.'</b>',
-                         '<tt>'.$outcome.'</tt>.<br />');
+            $result = &Apache::lonhtmlcommon::confirm_success(&mt('Unable to set interval to [_1] due to [_2].',
+                         '<b>'.$interval_titles->{$context}->{$env{'form.interval'}}.'</b>',
+                         '<tt>'.$outcome.'</tt>'),1);
         }
     }
-    return $result;
+    return &Apache::loncommon::confirmwrapper($result);
 }
 
 sub store_discussion_setting {
@@ -1443,20 +2341,20 @@ sub store_discussion_setting {
         my $outcome = &Apache::lonnet::put('nohist_whatsnew',
                                              \%discussion_settings,$udom,$uname);
         if ($outcome eq 'ok') {
-            $result = &mt('Count unread posts in discussions display set to [_1]',
-                  '<b>'.$env{'form.countunread'}.'</b><br />');
+            $result = &Apache::lonhtmlcommon::confirm_success(&mt('Count unread posts in discussions display set to [_1]',
+                  '<b>'.&mt($env{'form.countunread'}).'</b>').'<br />');
                                                                                   
         } else {
 	    my $lctype = lc(&Apache::loncommon::course_type());
             &Apache::lonnet::logthis('Error saving whatsnew countunread setting'.
                 ' '.$outcome.' for '.$uname.':'.$udom.' in '.$lctype.' '.$cid);
-            $result = &mt('Unable to set "number unread posts display" to [_1]'.
+            $result = &Apache::lonhtmlcommon::confirm_success(&mt('Unable to set "number unread posts display" to [_1]'.
                           ' due to [_2].',
-                         '<b>'.$env{'form.countunread'}.'</b>',
-                         '<tt>'.$outcome.'</tt>.<br />');
+                         '<b>'.&mt($env{'form.countunread'}).'</b>',
+                         '<tt>'.$outcome.'</tt>'),1);
         }
     }
-    return $result;
+    return &Apache::loncommon::confirmwrapper($result);
 }
 
 sub store_courseinit_setting {
@@ -1481,27 +2379,29 @@ sub store_courseinit_setting {
                                            \%courseinit_settings,$udom,$uname);
             if ($outcome eq 'ok') {
                 if ($page_control eq 'global preferences') {
-                    $result = &mt("Page displayed after role selection in $lctype now set by <b>user's global preferences</b>.");
+                    $result = &Apache::lonhtmlcommon::confirm_success(&mt("Page displayed after role selection in $lctype now set by [_1]user's global preferences[_2].",'<b>','</b>'));
                 } else {
-                    $result = &mt('Page displayed after role selection in this '.$lctype.' set to <b>[_2]</b>',$lctype,$$initpage{$env{'form.courseinit_page'}});
+                    $result = &Apache::lonhtmlcommon::confirm_success(&mt('Page displayed after role selection in this '.$lctype.' set to [_1].'
+                                 ,'<b>'.$$initpage{$env{'form.courseinit_page'}}.'</b>'));
                 }
             } else {
                 &Apache::lonnet::logthis('Error saving whatsnew courseinit '.
                                          'setting: '.$outcome.' for '.$uname.
                                          ':'.$udom.' in '.$lctype.' '.$cid);
                 if ($page_control eq 'global preferences') {
-                    $result = &mt('Unable to set control of page display to [_1]'.
+                    $result = &Apache::lonhtmlcommon::confirm_success(&mt('Unable to set control of page display to [_1]'.
                           ' due to [_2].',
                          '<b>'.$page_control.'</b>',
-                         '<tt>'.$outcome.'</tt>.<br />');
+                         '<tt>'.$outcome.'</tt>'),1);
                 } else {
-                    $result = &mt('Unable to set page display, after role selection, for this '.$lctype.' to <b>[_2]</b> due to <tt>[_3]</tt>.<br />',
-                         $$initpage{$env{'form.courseinit_page'}},$outcome);
+                    $result = &Apache::lonhtmlcommon::confirm_success(&mt('Unable to set page display, after role selection, for this '.$lctype.' to [_1] due to [_2].'
+                                 ,'<b>'.$$initpage{$env{'form.courseinit_page'}}.'</b>'
+                                 ,'<tt>'.$outcome.'</tt>'),1);
                 }
             }
         }
     }
-    return $result;
+    return &Apache::loncommon::confirmwrapper($result);
 }
 
 sub start_box {
@@ -1526,31 +2426,59 @@ sub start_box {
     $r->print('
          <table class="LC_nested_outer">
           <tr>
-           <th>'.$$heading{$caller}.'</th>
+           <th class="LC_left_item">'.$$heading{$caller}.'</th>
            <th class="LC_right_item">'.$showhide.'</th>
           </tr>');
      if (($caller eq 'abovethreshold') && ($$show{$caller})) {
          if ($$show{$caller}) {
              $r->print('
               <tr>
-                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chgthreshold&refpage='.$refpage.'">'.$lt{'chth'}.'</a></td>
+                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chgthreshold&amp;refpage='.$refpage.'">'.$lt{'chth'}.'</a></td>
               </tr>');
          }
      } elsif (($caller eq 'versionchanges') && ($$show{$caller})) {
          if ($$show{$caller}) {
              $r->print('
               <tr>
-                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chginterval&refpage='.$refpage.'">'.$lt{'chin'}.'</a></td>
+                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chginterval&amp;refpage='.$refpage.'">'.$lt{'chin'}.'</a></td>
               </tr>');
          }
      } elsif ($caller eq 'coursediscussion') {
          if ($$show{$caller}) {
              $r->print('
               <tr>
-                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chgdisc&refpage='.$refpage.'">'.$lt{'chop'}.'</a></td>
+                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chgdisc&amp;refpage='.$refpage.'">'.$lt{'chop'}.'</a></td>
               </tr>');
          }
-     }
+     } elsif (($caller eq 'newroles') && ($$show{$caller})) {
+         if ($$show{$caller}) {
+             $r->print('
+              <tr>
+                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chgnewroleinterval&amp;refpage='.$refpage.'">'.$lt{'chin'}.'</a></td>
+              </tr>');
+         }
+     } elsif (($caller eq 'oldroles') && ($$show{$caller})) {
+         if ($$show{$caller}) {
+             $r->print('
+              <tr>
+                <td class="LC_subheader" colspan="2"><a href="/adm/whatsnew?command=chgoldroleinterval&amp;refpage='.$refpage.'">'.$lt{'chin'}.'</a></td>
+              </tr>');
+         }
+    } elsif (($caller eq 'crslogin') && ($$show{$caller})) {
+        if ($$show{$caller}) {
+            $r->print('
+              <tr>
+                <td class="LC_subheader" align="left"><span class="LC_nobreak"><label><input type="radio" name="logindetails" value="0" checked="checked" onclick="javascript:toggledetails('."'login'".');" />&nbsp;'.&mt('Summary').'</label><label><input type="radio" name="logindetails" value="1" onclick="javascript:toggledetails('."'login'".');" />&nbsp;'.&mt('Details').'</label></span></td><td class="LC_subheader"><a href="/adm/whatsnew?command=chgcrslogininterval&amp;refpage='.$refpage.'">'.$lt{'chin'}.'</a></td>
+              </tr>');
+        }
+    } elsif (($caller eq 'sessions') && ($$show{$caller})) {
+        if ($$show{$caller}) {
+            $r->print('
+              <tr>
+                <td class="LC_subheader" align="left"><span class="LC_nobreak"><label><input type="radio" name="sessiondetails" value="0" checked="checked" onclick="javascript:toggledetails('."'session'".');" />&nbsp;'.&mt('Summary').'</label><label><input type="radio" name="sessiondetails" value="1" onclick="javascript:toggledetails('."'session'".');" />&nbsp;'.&mt('Details').'</label></span></td><td class="LC_subheader"><a href="/adm/whatsnew?command=chgsessionlimit&amp;refpage='.$refpage.'">'.$lt{'chin'}.'</a></td>
+              </tr>');
+        }
+    }
     $r->print('
               <tr>
                <td colspan="2">