--- loncom/homework/grades.pm	2008/04/21 16:30:47	1.518
+++ loncom/homework/grades.pm	2008/05/23 22:14:25	1.521
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.518 2008/04/21 16:30:47 raeburn Exp $
+# $Id: grades.pm,v 1.521 2008/05/23 22:14:25 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -4908,7 +4908,7 @@ sub scantron_scantab {
   domainconfig user, lines are from this file.
 
   Otherwise, fall back to getting lines from the legacy file on the
-  local server:  /home/httpd/lonTabs/scantronformat.tab    
+  local server:  /home/httpd/lonTabs/default_scantronformat.tab    
 
 =cut
 
@@ -4936,9 +4936,16 @@ sub get_scantronformat_file {
         }
     }
     if (!$gottab) {
-        my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
-        @lines = <$fh>;
-        close($fh);
+        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;
 }
@@ -7512,6 +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,
@@ -7532,6 +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.
     }
 
@@ -7589,6 +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.
 	    }
 
@@ -7601,6 +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>");
 
@@ -8215,7 +8226,7 @@ sub process_clicker {
     if (!$env{'form.upfiletype'}) { $env{'form.upfiletype'}='iclicker'; }
 
     my %checked;
-    foreach my $gradingmechanism ('attendance','personnel','specific') {
+    foreach my $gradingmechanism ('attendance','personnel','specific','given') {
        if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
           $checked{$gradingmechanism}="checked='checked'";
        }
@@ -8226,6 +8237,8 @@ sub process_clicker {
     my $attendance=&mt("Award points just for participation");
     my $personnel=&mt("Correctness determined from response by course personnel");
     my $specific=&mt("Correctness determined from response with clicker ID(s)"); 
+    my $given=&mt("Correctness determined from given list of answers").' '.
+              '<font size="-2"><tt>('.&mt("Provide comma-separated list. Use '*' for any answer correct, '-' for skip").')</tt></font>';
     my $pcorrect=&mt("Percentage points for correct solution");
     my $pincorrect=&mt("Percentage points for incorrect solution");
     my $selectform=&Apache::loncommon::select_form($env{'form.upfiletype'},'upfiletype',
@@ -8283,6 +8296,9 @@ function sanitycheck() {
 <br /><label><input type="radio" name="gradingmechanism" value="personnel" $checked{'personnel'} onClick="sanitycheck()" />$personnel</label>
 <br /><label><input type="radio" name="gradingmechanism" value="specific" $checked{'specific'} onClick="sanitycheck()" />$specific </label>
 <input type="text" name="specificid" value="$env{'form.specificid'}" size="20" />
+<br /><label><input type="radio" name="gradingmechanism" value="given" $checked{'given'} onClick="sanitycheck()" />$given </label>
+<br />&nbsp;&nbsp;&nbsp;
+<input type="text" name="givenanswer" size="50" />
 <input type="hidden" name="waschecked" value="$env{'form.gradingmechanism'}" />
 <br /><label>$pcorrect: <input type="text" name="pcorrect" size="4" value="$env{'form.pcorrect'}" onChange="sanitycheck()" /></label>
 <br /><label>$pincorrect: <input type="text" name="pincorrect" size="4" value="$env{'form.pincorrect'}" onChange="sanitycheck()" /></label>
@@ -8309,6 +8325,16 @@ sub process_clicker_file {
 	$result.='<span class="LC_error">'.&mt('You need to specify a clicker ID for the correct answer').'</span>';
 	return $result.&show_grading_menu_form($symb);
     }
+    if (($env{'form.gradingmechanism'} eq 'given') && ($env{'form.givenanswer'}!~/\w/)) {
+        $result.='<span class="LC_error">'.&mt('You need to specify the correct answer').'</span>';
+        return $result.&show_grading_menu_form($symb);
+    }
+    if ($env{'form.gradingmechanism'} eq 'given') {
+        $env{'form.givenanswer'}=~s/^\s*//gs;
+        $env{'form.givenanswer'}=~s/\s*$//gs;
+        $env{'form.givenanswer'}=~s/[^a-zA-Z0-9\.\*\-]+/\,/g;
+        $env{'form.givenanswer'}=uc($env{'form.givenanswer'});
+    }
     my %clicker_ids=&gather_clicker_ids();
     my %correct_ids;
     if ($env{'form.gradingmechanism'} eq 'personnel') {
@@ -8327,6 +8353,8 @@ sub process_clicker_file {
     }
     if ($env{'form.gradingmechanism'} eq 'attendance') {
 	$result.=&mt('Score based on attendance only');
+    } elsif ($env{'form.gradingmechanism'} eq 'given') {
+        $result.=&mt('Score based on [_1]','<tt>'.$env{'form.givenanswer'}.'</tt>');
     } else {
 	my $number=0;
 	$result.='<p><b>'.&mt('Correctness determined by the following IDs').'</b>';
@@ -8369,6 +8397,7 @@ sub process_clicker_file {
 <input type="hidden" name="probTitle" value="$env{'form.probTitle'}" />
 <input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
 <input type="hidden" name="gradingmechanism" value="$env{'form.gradingmechanism'}" />
+<input type="hidden" name="givenanswer" value="$env{'form.givenanswer'}" />
 <input type="hidden" name="pcorrect" value="$env{'form.pcorrect'}" />
 <input type="hidden" name="pincorrect" value="$env{'form.pincorrect'}" />
 ENDHEADER
@@ -8430,7 +8459,7 @@ ENDHEADER
     }
     $result.='<hr />'.
              &mt('Found [_1] registered and [_2] unregistered clickers.',$student_count,$unknown_count);
-    if ($env{'form.gradingmechanism'} ne 'attendance') {
+    if (($env{'form.gradingmechanism'} ne 'attendance') && ($env{'form.gradingmechanism'} ne 'given')) {
        if ($correct_count==0) {
           $errormsg.="Found no correct answers answers for grading!";
        } elsif ($correct_count>1) {