--- loncom/homework/grades.pm	2008/04/16 23:30:03	1.517
+++ loncom/homework/grades.pm	2008/05/14 16:36:31	1.520
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.517 2008/04/16 23:30:03 raeburn Exp $
+# $Id: grades.pm,v 1.520 2008/05/14 16:36:31 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -4880,19 +4880,76 @@ sub scantron_uploads {
 =cut
 
 sub scantron_scantab {
-    my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
     my $result='<select name="scantron_format">'."\n";
     $result.='<option></option>'."\n";
-    foreach my $line (<$fh>) {
-	my ($name,$descrip)=split(/:/,$line);
-	if ($name =~ /^\#/) { next; }
-	$result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
+    my @lines = &get_scantronformat_file();
+    if (@lines > 0) {
+        foreach my $line (@lines) {
+            next if (($line =~ /^\#/) || ($line eq ''));
+	    my ($name,$descrip)=split(/:/,$line);
+	    $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
+        }
     }
     $result.='</select>'."\n";
-
     return $result;
 }
 
+=pod
+
+=item get_scantronformat_file
+
+  Returns an array containing lines from the scantron format file for
+  the domain of the course.
+
+  If a url for a custom.tab file is listed in domain's configuration.db, 
+  lines are from this file.
+
+  Otherwise, if a default.tab has been published in RES space by the 
+  domainconfig user, lines are from this file.
+
+  Otherwise, fall back to getting lines from the legacy file on the
+  local server:  /home/httpd/lonTabs/default_scantronformat.tab    
+
+=cut
+
+sub get_scantronformat_file {
+    my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$cdom);
+    my $gottab = 0;
+    my @lines;
+    if (ref($domconfig{'scantron'}) eq 'HASH') {
+        if ($domconfig{'scantron'}{'scantronformat'} ne '') {
+            my $formatfile = &Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
+            if ($formatfile ne '-1') {
+                @lines = split("\n",$formatfile,-1);
+                $gottab = 1;
+            }
+        }
+    }
+    if (!$gottab) {
+        my $confname = $cdom.'-domainconfig';
+        my $default = $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
+        my $formatfile =  &Apache::lonnet::getfile($default);
+        if ($formatfile ne '-1') {
+            @lines = split("\n",$formatfile,-1);
+            $gottab = 1;
+        }
+    }
+    if (!$gottab) {
+        my @domains = &Apache::lonnet::current_machine_domains();
+        if (grep(/^\Q$cdom\E$/,@domains)) {
+            my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
+            @lines = <$fh>;
+            close($fh);
+        } else {
+            my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/default_scantronformat.tab');
+            @lines = <$fh>;
+            close($fh);
+        }
+    }
+    return @lines;
+}
+
 =pod 
 
 =item scantron_CODElist
@@ -5151,10 +5208,10 @@ sub scantron_selectphase {
 
 sub get_scantron_config {
     my ($which) = @_;
-    my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
+    my @lines = &get_scantronformat_file();
     my %config;
     #FIXME probably should move to XML it has already gotten a bit much now
-    foreach my $line (<$fh>) {
+    foreach my $line (@lines) {
 	my ($name,$descrip)=split(/:/,$line);
 	if ($name ne $which ) { next; }
 	chomp($line);
@@ -7462,6 +7519,7 @@ SCANTRONFORM
     my @delayqueue;
     my %completedstudents;
     
+    my $lock=&Apache::lonnet::set_lock(&mt('Grading bubblesheet exam'));
     my $count=&get_todo_count($scanlines,$scan_data);
     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
  				    'Scantron Progress',$count,
@@ -7482,6 +7540,7 @@ SCANTRONFORM
 	$r->print("</form>");
 	&ssi_print_error($r);
 	$r->print(&show_grading_menu_form($symb));
+        &Apache::lonnet::remove_lock($lock);
 	return '';		# Dunno why the other returns return '' rather than just returning.
     }
 
@@ -7539,6 +7598,7 @@ SCANTRONFORM
 		$r->print("</form>");
 		&ssi_print_error($r);
 		$r->print(&show_grading_menu_form($symb));
+                &Apache::lonnet::remove_lock($lock);
 		return '';	# Why return ''?  Beats me.
 	    }
 
@@ -7551,6 +7611,7 @@ SCANTRONFORM
 	&Apache::lonnet::delenv('scantron\.');
     }
     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    &Apache::lonnet::remove_lock($lock);
 #    my $lasttime = &Time::HiRes::time()-$start;
 #    $r->print("<p>took $lasttime</p>");