--- loncom/interface/lonmenu.pm	2010/05/30 18:30:52	1.328
+++ loncom/interface/lonmenu.pm	2010/06/06 11:56:12	1.329
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines to control the menu
 #
-# $Id: lonmenu.pm,v 1.328 2010/05/30 18:30:52 droeschl Exp $
+# $Id: lonmenu.pm,v 1.329 2010/06/06 11:56:12 droeschl Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -225,6 +225,30 @@ sub primary_menu {
     return "<ol class=\"LC_primary_menu LC_right\">$menu</ol>";
 }
 
+#returns hashref {user=>'',dom=>''} containing:
+#   own name, domain if user is au
+#   name, domain of parent author if user is ca or aa
+#empty return if user is not an author or not on homeserver
+#
+#TODO this should probably be moved somewhere more central
+#since it can be used by different parts of the system
+sub getauthor{
+    return unless $env{'request.role'}=~/^(ca|aa|au)/; #nothing to do if user isn't some kind of author
+
+                        #co- or assistent author?
+    my ($dom, $user) = ($env{'request.role'} =~ /^(?:ca|aa)\.\/($match_domain)\/($match_username)$/)
+                       ? ($1, $2) #domain, username of the parent author
+                       : @env{ ('request.role.domain', 'user.name') }; #own domain, username
+
+    # current server == home server?
+    my $home =  &Apache::lonnet::homeserver($user,$dom);
+    foreach (&Apache::lonnet::current_machine_ids()){
+        return {user => $user, dom => $dom} if $_ eq $home;
+    }
+
+    # if wrong server
+    return;
+}
 
 sub secondary_menu {
     my $menu;
@@ -238,6 +262,7 @@ sub secondary_menu {
     my $canmodifyuser = &Apache::lonnet::allowed('cst', $crs_sec); 
     my $canviewwnew   = &Apache::lonnet::allowed('whn', $crs_sec); 
     my $canmodpara    = &Apache::lonnet::allowed('opa', $crs_sec); 
+    my $author        = getauthor();
 
     my $showlink = &show_return_link();
     my %groups = &Apache::lonnet::get_active_groups(
@@ -249,6 +274,7 @@ sub secondary_menu {
         # evaluate conditions 
         next if    ref($menuitem)  ne 'ARRAY';
         next if    $$menuitem[4]   ne 'always'
+                && $$menuitem[4]   ne 'author'
                 && !$env{'request.course.id'};
         next if    $$menuitem[4]   eq 'showreturn'
                 && !$showlink
@@ -268,6 +294,8 @@ sub secondary_menu {
         next if    $$menuitem[4]   =~ /showgroups$/
                 && !$canviewgrps
                 && !%groups;
+        next if    $$menuitem[4]    eq 'author'
+                && !$author;
 
         if ($$menuitem[3] eq 'Roles' && $env{'request.course.id'}) {
             # special treatment for role selector
@@ -300,6 +328,8 @@ sub secondary_menu {
         $menu =~ s/\[url\]/$escurl/g;
         $menu =~ s/\[symb\]/$escsymb/g;
     }
+    $menu =~ s/\[uname\]/$$author{user}/g;
+    $menu =~ s/\[udom\]/$$author{dom}/g;
 
     return "<ul id=\"LC_secondary_menu\">$menu</ul>";
 }