--- loncom/homework/response.pm	2008/12/23 18:09:36	1.210
+++ loncom/homework/response.pm	2011/11/29 18:44:31	1.221.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # various response type definitons response definition
 #
-# $Id: response.pm,v 1.210 2008/12/23 18:09:36 raeburn Exp $
+# $Id: response.pm,v 1.221.2.2 2011/11/29 18:44:31 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -30,7 +30,7 @@
 
 =head1 NAME
 
-Apache::resonse.pm
+Apache::response.pm
 
 =head1 SYNOPSIS
 
@@ -54,6 +54,7 @@ use strict;
 use Apache::lonlocal;
 use Apache::lonnet;
 use Apache::lonmaxima();
+use Apache::lonr();
 
 BEGIN {
     &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
@@ -135,9 +136,10 @@ sub poprandomnumber {
 }
 
 sub setrandomnumber {
-    my ($ignore_id2) = @_;
-    my $rndseed;
-    $rndseed=&Apache::structuretags::setup_rndseed();
+    my ($ignore_id2,$target,$rndseed) = @_;
+    if (!defined($rndseed)) {
+        $rndseed=&Apache::structuretags::setup_rndseed(undef,$target);
+    } 
     if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
     &Apache::lonxml::debug("randseed $rndseed");
     #  $rndseed=unpack("%32i",$rndseed);
@@ -279,32 +281,51 @@ sub meta_response_order {
 }
 
 sub check_for_previous {
-    my ($curresponse,$partid,$id,$last) = @_;
+    my ($curresponse,$partid,$id,$last,$type) = @_;
     my %previous;
     $previous{'used'} = 0;
+    my $questiontype = $Apache::lonhomework::type;
+    my $curr_rndseed = $env{'form.'.$partid.'.rndseed'};
     foreach my $key (sort(keys(%Apache::lonhomework::history))) {
-	if ($key =~ /resource\.$partid\.$id\.submission$/) {
+	if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
 	    if ( $last && $key =~ /^(\d+):/ ) {
 		next if ($1 >= $last);
 	    }
 	    &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;
+                    $history=$1;
+                    next if ((($questiontype eq 'randomizetry') ||
+                             ($Apache::lonhomework::history{"$history:resource.$partid.type"} eq 'randomizetry')) &&
+                             ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
 		    $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
 		    $previous{'last'}='0';
 		    push(@{ $previous{'version'} },$history);
 		} else {
+                    next if ((($questiontype eq 'randomizetry') ||
+                             ($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry')) &&
+                             ($curr_rndseed ne $Apache::lonhomework::history{"resource.$partid.rndseed"}));
 		    $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
 		    $previous{'last'}='1';
 		}
+                $previous{'used'} = 1;
 		if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN';	}
                 if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
 		&Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
-	    }
+            } elsif ($type eq 'ci') {
+                if (lc($pastresponse) eq lc($curresponse)) {
+                    if ($key =~ /^(\d+):/) {
+                        my $history = $1;
+                        next if (($questiontype eq 'randomizetry') &&
+                             ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
+                        push (@{$previous{'versionci'}},$history);
+                        $previous{'awardci'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
+                        $previous{'usedci'} = 1;
+                    }
+                }
+            }
 	}
     }
     &Apache::lonhomework::showhash(%previous);
@@ -317,7 +338,10 @@ sub handle_previous {
 	if ($$previous{'last'}) {
 	    push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
-	} elsif ($Apache::lonhomework::type ne 'survey') {
+	} elsif (($Apache::lonhomework::type ne 'survey') &&
+                 ($Apache::lonhomework::type ne 'surveycred') &&
+                 ($Apache::lonhomework::type ne 'anonsurvey') &&
+                 ($Apache::lonhomework::type ne 'anonsurveycred')) {
 	    push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
 	}
@@ -398,7 +422,7 @@ sub start_customresponse {
     } elsif ($target eq 'edit') {
 	$result.=&Apache::edit::tag_start($target,$token);
 	$result.=&Apache::edit::text_arg('String to display for answer:',
-					 'answerdisplay',$token);
+					 'answerdisplay',$token,'50');
 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {
 	my $constructtag;
@@ -438,7 +462,7 @@ sub end_customresponse {
 	    ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
 		$response;
 	    
-	    my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
+	    my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
 	    if (!&Apache::inputtags::valid_award($award)) {
 		$error = $award;
 		$award = 'ERROR';
@@ -446,6 +470,9 @@ sub end_customresponse {
 	    &Apache::response::handle_previous(\%previous,$award);
 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
 		$award;
+            if ($award eq 'ASSIGNED_SCORE') {
+                $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
+            }
 	    if ($error) {
 		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
 		    $error;
@@ -462,7 +489,7 @@ sub end_customresponse {
 	$result .= &Apache::response::answer_footer('customresponse');
     }
     if ($target eq 'web') {
-	&setup_prior_tries_hash(\&format_prior_response_math);
+	&setup_prior_tries_hash(\&format_prior_response_custom);
     }
     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || 
 	$target eq 'tex' || $target eq 'analyze') {
@@ -483,6 +510,9 @@ sub end_customresponse {
 
 sub format_prior_response_custom {
     my ($mode,$answer) =@_;
+    if (ref($answer) eq 'ARRAY') {
+        $answer = '('.join(', ', @{ $answer }).')';
+    }
     return '<span class="LC_prior_custom">'.
 	    &HTML::Entities::encode($answer,'"<>&').'</span>';
 }
@@ -505,10 +535,10 @@ sub start_mathresponse {
     } elsif ($target eq 'edit') {
 	$result.=&Apache::edit::tag_start($target,$token);
 	$result.=&Apache::edit::text_arg('String to display for answer:',
-					 'answerdisplay',$token);
+					 'answerdisplay',$token,'50');
 	$result.=&Apache::edit::select_arg('Algebra System:',
 					   'cas',
-					   ['maxima'],
+					   ['maxima','R'],
 					   $token);
 	$result.=&Apache::edit::text_arg('Argument Array:',
 					 'args',$token).
@@ -538,14 +568,14 @@ sub edit_mathresponse_button {
 #    my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
     my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
     return(<<ENDFORMULABUTTON);
-<script language="JavaScript">
+<script type="text/javascript" language="JavaScript">
 function edit_${id}_${field} (textarea) {
     thenumber = textarea;
     thedata = document.forms['lonhomework'].elements[textarea].value;
     newwin = window.open("/adm/dragmath/applet/MaximaPopup.html","","width=565,height=400,resizable");
 }
 </script>
-<a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src='$iconpath/stift.gif' alt='$button' title='$button'/></a>
+<a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
 ENDFORMULABUTTON
 }
 
@@ -572,6 +602,12 @@ sub end_mathresponse {
                 $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
                                                       &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
             }
+            if ($cas eq 'R') {
+                my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
+                $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
+                                            &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
+            }
+
 	    if (!&Apache::inputtags::valid_award($award)) {
 		$error = $award;
 		$award = 'ERROR';
@@ -897,6 +933,10 @@ sub showallfoils {
 	}
     }
     if ($Apache::lonhomework::type eq 'survey') { return 1; }
+    if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
+    if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
+    if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
+
     return 0;
 }
 
@@ -948,13 +988,17 @@ sub getresponse {
 	my $id    = $Apache::inputtags::response[-1];
 	
 	my $line;
+	my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
+        if (!$startline) {
+            $startline = $Apache::lonxml::counter;
+        }
 	for ($line = 0; $line < $lines; $line++) {
-	    my $theline = $Apache::lonxml::counter+$offset-1+$line;
+            my $theline = $startline+$offset-1+$line;
 	    $response = $env{"scantron.$theline.answer"};
 	    if ((defined($response)) && ($response ne "") && ($response ne " ")) {
 		last;
 	    }
-	    
+ 
 	}
 
 	# save bubbled letter for later
@@ -1047,7 +1091,7 @@ sub scored_response {
 }
 
 sub whichorder {
-    my ($max,$randomize,$showall,$hash)=@_;
+    my ($max,$randomize,$showall,$hash,$rndseed)=@_;
     #&Apache::lonxml::debug("man $max randomize $randomize");
     if (!defined(@{ $$hash{'names'} })) { return; }
     my @names = @{ $$hash{'names'} };
@@ -1287,25 +1331,40 @@ sub check_status {
     - scalars that are other elements of the history hash to pass to $func
     - ref to data to be passed untouched to $func
 
+  $questiontype is the questiontype (currently only passed in if
+      randomizebytry.
+
 =cut
 
 sub setup_prior_tries_hash {
-    my ($func,$data) = @_;
+    my ($func,$data,$questiontype) = @_;
     my $part = $Apache::inputtags::part;
-    my $id   = $Apache::inputtags::response[-1];	
+    my $id   = $Apache::inputtags::response[-1];
     foreach my $i (1..$Apache::lonhomework::history{'version'}) {
-	my $sub_key   = "$i:resource.$part.$id.submission";
+        my $partprefix = "$i:resource.$part";
+	my $sub_key   = "$partprefix.$id.submission";
 	next if (!exists($Apache::lonhomework::history{$sub_key}));
+        my $type_key = "$partprefix.type";
+        my $type = $Apache::lonhomework::history{$type_key};
 	my @other_data;
-	foreach my $datum (@{ $data }) {
-	    if (ref($datum)) {
-		push(@other_data,$datum);
-	    } else {
-		my $info_key = "$i:resource.$part.$id.$datum";
-		push(@other_data,$Apache::lonhomework::history{$info_key});
+        if (ref($data) eq 'ARRAY') {
+	    foreach my $datum (@{ $data }) {
+	        if (ref($datum)) {
+		    push(@other_data,$datum);
+	        } else {
+		    my $info_key = "$i:resource.$part.$id.$datum";
+		    push(@other_data,$Apache::lonhomework::history{$info_key});
+	        }
 	    }
-	}
-
+        }
+        if ($questiontype eq 'randomizetry') { 
+            my $order_key = "$partprefix.$id.foilorder";
+            my @whichopts = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
+            if (@whichopts > 0) {
+                shift(@other_data);
+                unshift(@other_data,\@whichopts);
+            }
+        }
 	my $output =
 	    &$func('grade',
 		   $Apache::lonhomework::history{$sub_key},