--- loncom/interface/lonsearchcat.pm	2014/12/14 22:11:03	1.344
+++ loncom/interface/lonsearchcat.pm	2015/06/12 21:11:07	1.345
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Search Catalog
 #
-# $Id: lonsearchcat.pm,v 1.344 2014/12/14 22:11:03 raeburn Exp $
+# $Id: lonsearchcat.pm,v 1.345 2015/06/12 21:11:07 damieng Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -78,6 +78,7 @@ use Apache::lonnavmaps;
 use Apache::lonindexer();
 use Apache::lonwishlist();
 use LONCAPA;
+use Time::HiRes qw(sleep);
 
 ######################################################################
 ######################################################################
@@ -143,7 +144,7 @@ sub handler {
     ##     this once, so the pause indicator is deleted
     ##
     if (exists($env{'form.pause'})) {
-        sleep(1);
+        Time::HiRes::sleep(0.1);
         delete($env{'form.pause'});
     }
     ##
@@ -2050,17 +2051,15 @@ sub print_sort_form {
         &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
         return;
     }
+    # update results
+    my $newloc = '/adm/searchcat?phase=results&persistent_db_id='.
+        $env{'form.persistent_db_id'};
     my $js =<<END;
 <script type="text/javascript">
-// <![CDATA[
-    function change_sort() {
-        var newloc = "/adm/searchcat?phase=results";
-        newloc += "&persistent_db_id=$env{'form.persistent_db_id'}";
-        newloc += "&sortby=";
-        newloc += document.forms.statusform.elements.sortby.value;
-        parent.resultsframe.location= newloc;
-    }
-// ]]>
+    var frame = parent.resultsframe;
+    var frameDoc = frame.document;
+    if (frameDoc.readyState  == 'complete')
+        frame.location = "$newloc";
 </script>
 END
 
@@ -2228,8 +2227,24 @@ SCRIPT
     $r->rflush();
 }
 
+sub reload_result_frame {
+    my ($r) = @_;
+    my $newloc = '/adm/searchcat?phase=results&persistent_db_id='.
+        $env{'form.persistent_db_id'};
+    $r->print(<<SCRIPT);
+<script type="text/javascript">
+    var frame = parent.resultsframe;
+    var frameDoc = frame.document;
+    if (frameDoc.readyState  == 'complete')
+        frame.location = "$newloc";
+</script>
+SCRIPT
+
+    $r->rflush();
+}
+
 {
-    my $max_time  = 300;  # seconds for the search to complete
+    my $max_time  = 60;  # seconds for the search to complete
     my $start_time = 0;
     my $last_time = 0;
 
@@ -2410,6 +2425,7 @@ END
     ##
     ## Prepare for the big loop.
     my $hitcountsum;
+    my $oldhitcountsum;
     my %matches;
     my $server; 
     my $status;
@@ -2456,7 +2472,7 @@ END
                 &update_status($r,
                        &mt('waiting on [_1]',join(' ',keys(%Server_status))));
             }
-            sleep(1); 
+            Time::HiRes::sleep(0.1);
         }
         #
         # Loop through the servers we have contacted but do not
@@ -2532,7 +2548,13 @@ END
                 delete($Server_status{$server});
             }
             last if ($connection->aborted());
-            &update_count_status($r,$hitcountsum);
+            if ($oldhitcountsum < $hitcountsum) {
+                &update_count_status($r,$hitcountsum);
+                if ($hitcountsum <= $env{'form.show'}) {
+                    reload_result_frame($r);
+                }
+                $oldhitcountsum = $hitcountsum;
+            }
         }
         last if ($connection->aborted());
         &update_seconds($r);
@@ -2626,6 +2648,8 @@ sub display_results {
     if ($env{'form.catalogmode'} eq 'import') {
         if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
                   &GDBM_WRCREAT(),0640)) {
+            # NOTE: this can happen when a previous request to searchcat?phase=results gets interrupted
+            # (%groupsearch_db is not untied)
             $r->print('<p class="LC_error">'.
               &mt('Unable to save import results.').
               '</p>'.
@@ -2634,6 +2658,10 @@ sub display_results {
             $r->rflush();
             return;
         } 
+        # untie %groupsearch_db if the connection gets aborted before the end
+        $r->register_cleanup(sub {
+            untie %groupsearch_db if (tied(%groupsearch_db));
+        });
     }
     ##
     ## Prepare the table for querying
@@ -2775,8 +2803,7 @@ sub display_results {
     );
 
     if ($total_results == 0) {
-        $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2" />'.
-                  '<p class="LC_info">'.&mt('There are currently no results.').'</p>'.
+        $r->print('<p class="LC_info">'.&mt('There are currently no results.').'</p>'.
                   "</form>".
 		  &Apache::loncommon::end_page());
         return;