--- loncom/interface/loncommon.pm	2008/12/18 17:30:36	1.692.2.6
+++ loncom/interface/loncommon.pm	2009/01/08 19:51:28	1.692.2.11
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.692.2.6 2008/12/18 17:30:36 raeburn Exp $
+# $Id: loncommon.pm,v 1.692.2.11 2009/01/08 19:51:28 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2717,6 +2717,42 @@ sub flush_email_cache {
     &Apache::lonnet::devalidate_cache_new('emailscache',$id);
 }
 
+# -------------------------------------------------------------------- getlangs
+
+=pod
+
+=item * &getlangs($uname,$udom)
+
+Gets a user's language preference and returns it as a hash with key:
+language.
+
+=cut
+
+sub getlangs {
+    my ($uname,$udom) = @_;
+    if (!$udom)  { $udom =$env{'user.domain'}; }
+    if (!$uname) { $uname=$env{'user.name'};   }
+    my $id=$uname.':'.$udom;
+    my ($langs,$cached)=&Apache::lonnet::is_cached_new('userlangs',$id);
+    if ($cached) {
+        return %{$langs};
+    } else {
+        my %loadlangs=&Apache::lonnet::get('environment',['languages'],
+                                           $udom,$uname);
+        &Apache::lonnet::do_cache_new('userlangs',$id,\%loadlangs);
+        return %loadlangs;
+    }
+}
+
+sub flush_langs_cache {
+    my ($uname,$udom)=@_;
+    if (!$udom)  { $udom =$env{'user.domain'}; }
+    if (!$uname) { $uname=$env{'user.name'};   }
+    return if ($udom eq 'public' && $uname eq 'public');
+    my $id=$uname.':'.$udom;
+    &Apache::lonnet::devalidate_cache_new('userlangs',$id);
+}
+
 # ------------------------------------------------------------------ Screenname
 
 =pod
@@ -3171,7 +3207,7 @@ sub relative_to_absolute {
     }
     $thisdir=~s-/[^/]*$--;
     foreach my $link (@rlinks) {
-	unless (($link=~/^http:\/\//i) ||
+	unless (($link=~/^https?\:\/\//i) ||
 		($link=~/^\//) ||
 		($link=~/^javascript:/i) ||
 		($link=~/^mailto:/i) ||
@@ -4598,7 +4634,7 @@ table#LC_mainmenu td.LC_mainmenu_column
 .LC_menubuttons_link {
   text-decoration: none;
 }
-#2008--9-5: new menu style sheet.Changed category
+/*2008--9-5: new menu style sheet.Changed category*/
 .LC_menubuttons_category {
   color: $font;
   background: $pgbg;
@@ -9030,7 +9066,9 @@ sub construct_course {
                    'policy.email',
                    'comment.email',
                    'pch.users.denied',
-                   'plc.users.denied'],
+                   'plc.users.denied',
+                   'hidefromcat',
+                   'categories'],
                    $$crsudom,$$crsunum);
     }
 
@@ -9531,7 +9569,7 @@ sub _add_to_env {
 # --- Get the symbolic name of a problem and the url
 sub get_symb {
     my ($request,$silent) = @_;
-    (my $url=$env{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+    (my $url=$env{'form.url'}) =~ s-^https?\://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
     my $symb=($env{'form.symb'} ne '' ? $env{'form.symb'} : (&Apache::lonnet::symbread($url)));
     if ($symb eq '') {
         if (!$silent) {
@@ -9558,11 +9596,13 @@ sub get_annotation {
 }
 
 sub clean_symb {
-    my ($symb) = @_;
+    my ($symb,$delete_enc) = @_;
 
     &Apache::lonenc::check_decrypt(\$symb);
     my $enc = $env{'request.enc'};
-    delete($env{'request.enc'});
+    if ($delete_enc) {
+        delete($env{'request.enc'});
+    }
 
     return ($symb,$enc);
 }