--- loncom/homework/response.pm	2001/07/10 22:06:42	1.30
+++ loncom/homework/response.pm	2001/08/03 22:12:07	1.32
@@ -7,7 +7,7 @@ package Apache::response;
 use strict;
 
 sub BEGIN {
-  &Apache::lonxml::register('Apache::response',('responseparam','caparesponse','numericalresponse','radiobuttonresponse','optionresponse','imageresponse','essayresponse'));
+  &Apache::lonxml::register('Apache::response',('responseparam','caparesponse','numericalresponse','stringresponse','radiobuttonresponse','optionresponse','imageresponse','essayresponse'));
 }
 
 sub start_response {
@@ -93,22 +93,53 @@ sub mandatory_part_meta {
 }
 
 sub check_for_previous {
-  return '0';
+  my ($curresponse,$partid,$id) = @_;
+  my %previous;
+  $previous{'used'} = 0;
+  foreach my $key (reverse(sort(keys(%Apache::lonhomework::history)))) {
+    if ($key =~ /resource\.$partid\.$id\.submission/) {
+      &Apache::lonxml::debug("Trying $key");
+      my $pastresponse=$Apache::lonhomework::history{$key};
+      if ($pastresponse eq $curresponse) {
+	$previous{'used'} = 1;
+	my $history;
+	if ( $key =~ /^(\d+):/ ) {
+	  $history=$1;
+	  $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
+	  $previous{'last'}='0';
+	} else {
+	  $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
+	  $previous{'last'}='1';
+	}
+	if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN';	}
+	&Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
+	last;
+      }
+    }
+  }
+  return %previous;
 }
 
-sub start_numericalresponse {
+sub start_caparesponse {
   require Apache::caparesponse; 
   import Apache::caparesponse; 
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
-  return &Apache::caparesponse::start_numericalresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
+#  print "\n<br />\nsimple caparesponse\n";
+  return &Apache::caparesponse::start_caparesponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
 }
 
-sub start_caparesponse {
+sub start_stringresponse {
+  require Apache::caparesponse;
+  import Apache::caparesponse;
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  return &Apache::caparesponse::start_stringresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
+}
+
+sub start_numericalresponse {
   require Apache::caparesponse; 
   import Apache::caparesponse; 
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
-#  print "\n<br />\nsimple caparesponse\n";
-  return &Apache::caparesponse::start_caparesponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
+  return &Apache::caparesponse::start_numericalresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
 }
 
 sub start_radiobuttonresponse {