--- loncom/homework/response.pm	2001/07/10 22:06:42	1.30
+++ loncom/homework/response.pm	2001/08/07 12:24:53	1.40
@@ -2,12 +2,14 @@
 # various response type definitons response definition
 
 # 11/23,11/24,11/28 Gerd Kortemeyer
+# Guy Albertelli
+# 08/04,08/07 Gerd Kortemeyer
 
 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 {
@@ -33,8 +35,11 @@ sub setrandomnumber {
   &Apache::lonxml::debug("randseed $rndseed");
 #  $rndseed=unpack("%32i",$rndseed);
   $rndseed=$rndseed
-    +(&Apache::lonnet::numval($Apache::inputtags::part) << 10)
+    +(&Apache::lonnet::numval($Apache::inputtags::part) << 10);
+  if (defined($Apache::inputtags::response['-1'])) {
+    $rndseed=$rndseed
       +&Apache::lonnet::numval($Apache::inputtags::response['-1']);
+  }
   srand($rndseed);
   &Apache::lonxml::debug("randseed $rndseed");
   return '';
@@ -44,10 +49,17 @@ sub meta_parameter_write {
     my ($name,$type,$default,$display)=@_;
     return '<parameter part="'.$Apache::inputtags::part.
 	            '" name="'.$name.
-                    '" type="'.$type.
-                 '" default="'.$default.
-	         '" display="'.$display.
-                          ' [Part: '.$Apache::inputtags::part.']"></parameter>'
+                    '" type="'.$type.'"'.
+ ($default?' default="'.$default.'"':'').
+ ($display?' display="'.$display.' [Part: '.$Apache::inputtags::part.']"':'')
+           .'></parameter>'
+     ."\n";
+}
+
+sub meta_package_write {
+    my $name=shift;
+    return '<parameter part="'.$Apache::inputtags::part.
+	         '" package="'.$name.'"></parameter>'
      ."\n";
 }
 
@@ -69,17 +81,17 @@ sub mandatory_part_meta {
 # of each part
 #
  return
-    &meta_parameter_write('opendate','date_start','',
-                          'Opening Date').
-    &meta_parameter_write('duedate','date_end','',
-                          'Due Date').
-    &meta_parameter_write('answerdate','date_start','',
-                          'Show Answer Date').
-    &meta_parameter_write('weight','int_zeropos','',
-                          'Available Points').
-    &meta_parameter_write('maxtries','int_pos','',
-                          'Maximum Number of Tries').
-
+#    &meta_parameter_write('opendate','date_start','',
+#                          'Opening Date').
+#    &meta_parameter_write('duedate','date_end','',
+#                          'Due Date').
+#    &meta_parameter_write('answerdate','date_start','',
+#                          'Show Answer Date').
+#    &meta_parameter_write('weight','int_zeropos','',
+#                          'Available Points').
+#    &meta_parameter_write('maxtries','int_pos','',
+#                          'Maximum Number of Tries').
+    &meta_package_write('part').
     &meta_stores_write('solved','string',
                           'Problem Status').
     &meta_stores_write('tries','int_zeropos',
@@ -93,22 +105,54 @@ 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,$style);
+}
+
+sub start_stringresponse {
+  require Apache::caparesponse;
+  import Apache::caparesponse;
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  return &Apache::caparesponse::start_stringresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
 }
 
-sub start_caparesponse {
+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 {