--- loncom/homework/response.pm	2004/02/16 20:09:51	1.91
+++ loncom/homework/response.pm	2004/05/07 17:20:19	1.98
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # various response type definitons response definition
 #
-# $Id: response.pm,v 1.91 2004/02/16 20:09:51 albertel Exp $
+# $Id: response.pm,v 1.98 2004/05/07 17:20:19 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -28,6 +28,7 @@
 
 package Apache::response;
 use strict;
+use Apache::lonlocal;
 
 BEGIN {
     &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));
@@ -45,6 +46,16 @@ sub start_response {
     push (@Apache::inputtags::response,$id);
     push (@Apache::inputtags::responselist,$id);
     @Apache::inputtags::inputlist=();
+    if ($Apache::inputtags::part eq '') {
+	&Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
+    }
+    if ($Apache::inputtags::response_with_no_part &&
+	$Apache::inputtags::part ne '0') {
+	&Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
+    }
+    if ($Apache::inputtags::part eq '0') {
+	$Apache::inputtags::response_with_no_part=1;
+    }
     return $id;
 }
 
@@ -188,7 +199,7 @@ sub check_for_previous {
     my %previous;
     $previous{'used'} = 0;
     foreach my $key (sort(keys(%Apache::lonhomework::history))) {
-	if ($key =~ /resource\.$partid\.$id\.submission/) {
+	if ($key =~ /resource\.$partid\.$id\.submission$/) {
 	    &Apache::lonxml::debug("Trying $key");
 	    my $pastresponse=$Apache::lonhomework::history{$key};
 	    if ($pastresponse eq $curresponse) {
@@ -262,7 +273,7 @@ sub end_dataresponse {
 	    my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
 	    my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
 	    if ($allowed) {
-		&Apache::response::setup_params('dataresponse');
+		&Apache::response::setup_params('dataresponse',$safeeval);
 		my $partid = $Apache::inputtags::part;
 		my $id = $Apache::inputtags::response['-1'];
 		my $response = $ENV{'form.HWVAL_'.$id};
@@ -382,7 +393,7 @@ sub reset_params {
 }
 
 sub setup_params {
-    my ($tag) = @_;
+    my ($tag,$safeeval) = @_;
 
     if ($ENV{'request.state'} eq 'construct') { return; }
     my %paramlist=();
@@ -405,7 +416,9 @@ sub setup_params {
 	    &Apache::lonxml::debug("using nothing");
 	    $Apache::inputtags::params{$key}='';
 	} else {
-	    &Apache::lonxml::debug("using value");
+	    my $string="{return qq\0".$value."\0}";
+	    my $newvalue=&Apache::run::run($string,$safeeval,1);
+	    if (defined($newvalue)) { $value=$newvalue; }
 	    $Apache::inputtags::params{$key}=$value;
 	}
     }
@@ -584,6 +597,15 @@ sub analyze_store_foilgroup {
     push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
 }
 
+sub check_if_computed {
+    my ($token,$parstack,$safeeval,$name)=@_;
+    my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
+    if ($value ne $token->[2]{$name}) {
+	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+	$Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
+    }
+}
+
 sub pick_foil_for_concept {
     my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
     if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
@@ -619,6 +641,20 @@ sub pick_foil_for_concept {
 
 }
 
+sub get_response_param {
+    my ($id,$name,$default)=@_;
+    my $parameter;
+    if ($ENV{'request.state'} eq 'construct' &&
+	defined($Apache::inputtags::params{$name})) {
+	$parameter=$Apache::inputtags::params{$name};
+    } else {
+	$parameter=&Apache::lonnet::EXT("resource.$id.$name");
+    }
+    if (!defined($parameter) ||	$parameter eq '') {
+	$parameter = $default;
+    }
+    return $parameter;
+}
 
 1;
 __END__