--- loncom/homework/lonhomework.pm	2017/04/03 13:11:47	1.344.2.8
+++ loncom/homework/lonhomework.pm	2017/06/13 16:20:40	1.344.2.8.2.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler
 #
-# $Id: lonhomework.pm,v 1.344.2.8 2017/04/03 13:11:47 raeburn Exp $
+# $Id: lonhomework.pm,v 1.344.2.8.2.1 2017/06/13 16:20:40 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1460,6 +1460,41 @@ sub update_construct_style {
     }
 }
 
+#
+# Sets interval for current user so time left will be zero, either for the entire folder
+# containing the current resource, or just the resource, depending on value of first item
+# in interval array retrieved from EXT("resource.0.interval");
+#
+sub zero_timer {
+    my ($symb) = @_;
+    my ($hastimeleft,$first_access,$now);
+    my @interval=&Apache::lonnet::EXT("resource.0.interval");
+    if (@interval > 1) {
+        if ($interval[1] eq 'course') {
+            return;
+        } else {
+            my $now = time;
+            my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
+            if ($first_access > 0) {
+                if ($first_access+$interval[0] > $now) {
+                    my $done_time = $now - $first_access;
+                    my $snum = 1;
+                    if ($interval[1] eq 'map') {
+                        $snum = 2;
+                    }
+                    my $result =
+                        &Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
+                                                                     $snum,$done_time,
+                                                                     'date_interval',
+                                                                     $env{'user.name'},
+                                                                     $env{'user.domain'});
+                    return $result;
+                }
+            }
+        }
+    }
+    return;
+}
 
 sub handler {
     #my $t0 = [&gettimeofday()];
@@ -1516,6 +1551,12 @@ sub handler {
 	    &newproblem($request);
 	}
     } else {
+        # Set the event timer to zero if the "done button" was clicked.  The button is
+        # part of the LCdoneButton form created in lonmenu.pm
+        if ($symb && $env{'form.LC_interval_done'} eq 'true') {
+            &zero_timer($symb);
+            undef($env{'form.LC_interval_done'});
+        }
 	# just render the page normally outside of construction space
 	&Apache::lonxml::debug("not construct");
 	&renderpage($request,$file);