--- loncom/homework/optionresponse.pm	2004/02/19 19:06:35	1.101
+++ loncom/homework/optionresponse.pm	2004/03/15 22:09:52	1.104
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # option list style responses
 #
-# $Id: optionresponse.pm,v 1.101 2004/02/19 19:06:35 albertel Exp $
+# $Id: optionresponse.pm,v 1.104 2004/03/15 22:09:52 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -27,7 +27,8 @@
 #
 package Apache::optionresponse;
 use strict;
-use Apache::response;
+use Apache::response();
+use Apache::lonlocal;
 
 BEGIN {
   &Apache::lonxml::register('Apache::optionresponse',('optionresponse'));
@@ -41,6 +42,7 @@ sub start_optionresponse {
   push (@Apache::lonxml::namespace,'optionresponse');
   my $id = &Apache::response::start_response($parstack,$safeeval);
   %Apache::hint::option=();
+  undef(%Apache::response::foilnames);
   if ($target eq 'edit') {
     $result.=&Apache::edit::start_table($token).
 	"<tr><td>Multiple Option Response Question ".
@@ -75,6 +77,7 @@ sub end_optionresponse {
   &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
   my $result;
   if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
+  undef(%Apache::response::foilnames);
   return $result;
 }
 
@@ -460,14 +463,14 @@ sub bubbles {
 	$ENV{'form.textwidth'}=~/(\d+)/;
 	$textwidth=$1;
     } else {
-	$ENV{'textwidth'}=~/(\d+)/;
-	$textwidth=$1;
+	$ENV{'textwidth'}=~/(\d*)\.?(\d*)/;
+	$textwidth=$1.'.'.$2;
     }
     for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
 	my $leftmargin;
 	$opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
 	if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
-	$current_length += (length($opt[$ind])+length($alphabet[$ind])+3)*2;
+	$current_length += (length($opt[$ind])+length($alphabet[$ind])+4)*2;
 	if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
 	    $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
 	    $head.='lr';
@@ -565,10 +568,14 @@ sub end_foil {
     my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
     if ($value ne 'unused') {
       my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
-      my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
       &Apache::lonxml::debug("Got a name of :$name:");
       if (!$name) { $name=$Apache::lonxml::curdepth; }
       &Apache::lonxml::debug("Using a name of :$name:");
+      if (defined($Apache::response::foilnames{$name})) {
+	  &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
+      }
+      $Apache::response::foilnames{$name}++;
+      my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
       if ( $Apache::optionresponse::conceptgroup
 	   && !&Apache::response::showallfoils() ) {
 	push @{ $Apache::response::conceptgroup{'names'} }, $name;