--- loncom/interface/loncommon.pm	2009/03/26 14:59:10	1.779
+++ loncom/interface/loncommon.pm	2009/03/27 04:59:30	1.781
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.779 2009/03/26 14:59:10 bisitz Exp $
+# $Id: loncommon.pm,v 1.781 2009/03/27 04:59:30 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2847,6 +2847,27 @@ sub track_student_link {
 	&help_open_topic('View_recent_activity');
 }
 
+sub slot_reservations_link {
+    my ($linktext,$sname,$sdom,$target) = @_;
+    my $link ="/adm/slotrequest?command=showresv&origin=aboutme";
+    my $title = 'View slot reservation history';
+    if (defined($sname) && $sname !~ /^\s*$/ &&
+        defined($sdom)  && $sdom  !~ /^\s*$/) {
+        $link .= "&uname=$sname&udom=$sdom";
+        $title .= ' of this student';
+    }
+    if (defined($target) && $target !~ /^\s*$/) {
+        $target = qq{target="$target"};
+    } else {
+        $target = '';
+    }
+    $title = &mt($title);
+    $linktext = &mt($linktext);
+    return qq{<a href="$link" title="$title" $target>$linktext</a>};
+# FIXME uncomment when help item created: &help_open_topic('Slot_Reservation_History');
+
+}
+
 # ===================================================== Display a student photo
 
 
@@ -7017,6 +7038,8 @@ If the user's status includes multiple t
 the largest default quota which applies to the user determines the
 default quota returned.
 
+=back
+
 =cut
 
 ###############################################
@@ -7565,8 +7588,57 @@ sub get_institutional_codes {
 
 =pod
 
+=head1 Slot Helpers
+
+=over 4
+
+=item * sorted_slots()
+
+Sorts an array of slot names in order of slot start time (earliest first). 
+
+Inputs:
+
+=over 4
+
+slotsarr  - Reference to array of unsorted slot names.
+
+slots     - Reference to hash of hash, where outer hash keys are slot names.
+
+=back
+
+Returns:
+
+=over 4
+
+sorted   - An array of slot names sorted by the start time of the slot.
+
 =back
 
+=back
+
+=cut
+
+
+sub sorted_slots {
+    my ($slotsarr,$slots) = @_;
+    my @sorted;
+    if ((ref($slotsarr) eq 'ARRAY') && (ref($slots) eq 'HASH')) {
+        @sorted =
+            sort {
+                     if (ref($slots->{$a}) && ref($slots->{$b})) {
+                         return $slots->{$a}{'starttime'} <=> $slots->{$b}{'starttime'}
+                     }
+                     if (ref($slots->{$a})) { return -1;}
+                     if (ref($slots->{$b})) { return 1;}
+                     return 0;
+                 } @{$slotsarr};
+    }
+    return @sorted;
+}
+
+
+=pod
+
 =head1 HTTP Helpers
 
 =over 4