--- loncom/homework/response.pm	2005/09/23 16:47:06	1.125
+++ loncom/homework/response.pm	2005/12/06 10:00:08	1.133
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # various response type definitons response definition
 #
-# $Id: response.pm,v 1.125 2005/09/23 16:47:06 albertel Exp $
+# $Id: response.pm,v 1.133 2005/12/06 10:00:08 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -32,7 +32,7 @@ use Apache::lonlocal;
 use Apache::lonnet;
 
 BEGIN {
-    &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));
+    &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse'));
 }
 
 sub start_response {
@@ -94,9 +94,9 @@ sub pushrandomnumber {
 	# do nothing
     } else {
 	my @seed=&Math::Random::random_get_seed();
-	push (@randomseeds,\@seed);
+	push(@randomseeds,\@seed);
     }
-    &Apache::response::setrandomnumber();
+    &Apache::response::setrandomnumber(@_);
 }
 sub poprandomnumber {
     my $rand_alg=&Apache::lonnet::get_rand_alg();
@@ -113,13 +113,14 @@ sub poprandomnumber {
 }
 
 sub setrandomnumber {
+    my ($ignore_id2) = @_;
     my $rndseed;
     $rndseed=&Apache::structuretags::setup_rndseed();
     if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
     &Apache::lonxml::debug("randseed $rndseed");
     #  $rndseed=unpack("%32i",$rndseed);
     my $rand_alg=&Apache::lonnet::get_rand_alg();
-    my $rndmod;
+    my ($rndmod,$rndmod2);
 
     my ($id1,$id2,$shift_amt);
     if ($Apache::lonhomework::parsing_a_problem) {
@@ -130,7 +131,7 @@ sub setrandomnumber {
 	$shift_amt=scalar(@Apache::inputtags::responselist);
     } elsif ($Apache::lonhomework::parsing_a_task) {
 	$id1=$Apache::bridgetask::dimension;
-	if (defined($Apache::bridgetask::instance[-1])) {
+	if (!$ignore_id2 && defined($Apache::bridgetask::instance[-1])) {
 	    $id2=$Apache::bridgetask::instance[-1];
 	}
 	$shift_amt=scalar(@Apache::bridgetask::instance);
@@ -143,19 +144,22 @@ sub setrandomnumber {
     } elsif ($rand_alg eq '64bit3') {
 	$rndmod=(&Apache::lonnet::numval2($id1) << 10);
 	if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
-    } else {
+    } elsif ($rand_alg eq '64bit4') {
 	my $shift=(4*$shift_amt)%30;
 	$rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
 	if (defined($id2)) {
 	    $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
 	}
+    } else {
+	($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
     }
+
     if ($rndseed =~/([,:])/) {
 	my $char=$1;
 	use integer;
 	my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
 	$num1+=$rndmod;
-	$num2+=$rndmod;
+	$num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
 	if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
 	$rndseed=$num1.$char.$num2;
     } else {
@@ -358,6 +362,106 @@ sub end_dataresponse {
     return $result;
 }
 
+sub start_customresponse {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $id = &Apache::response::start_response($parstack,$safeeval);
+    push(@Apache::lonxml::namespace,'customresponse');
+    my $result;
+    undef($Apache::response::custom_answer);
+    &Apache::lonxml::register('Apache::response',('answer'));
+    if ($target eq 'web') {
+  	if (  &Apache::response::show_answer() ) {
+	    my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
+						   $safeeval);
+	    $Apache::inputtags::answertxt{$id}=$answer;
+	}
+    } elsif ($target eq 'edit') {
+	$result.=&Apache::edit::tag_start($target,$token);
+	$result.=&Apache::edit::text_arg('String to display for answer:',
+					 'answerdisplay',$token);
+	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
+    } elsif ($target eq 'modified') {
+	my $constructtag;
+	$constructtag=&Apache::edit::get_new_args($token,$parstack,
+						  $safeeval,'answerdisplay');
+	if ($constructtag) {
+	    $result = &Apache::edit::rebuild_tag($token);
+	    $result.=&Apache::edit::handle_insert();
+	}
+    } elsif ($target eq 'answer' || $target eq 'grade') {
+	&Apache::response::reset_params();
+    } elsif ($target eq 'meta') {
+	$result .= &Apache::response::meta_package_write('customresponse');
+    }
+    return $result;
+}
+
+sub end_customresponse {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result;
+    my $part=$Apache::inputtags::part;
+    my $id=$Apache::inputtags::response[-1];
+    if ( $target eq 'grade' && &Apache::response::submitted() ) {
+	my $response = &Apache::response::getresponse();
+	if ( $response =~ /[^\s]/ && 
+	     $Apache::response::custom_answer_type eq 'loncapa/perl') {
+	    if (!$Apache::lonxml::default_homework_loaded) {
+		&Apache::lonxml::default_homework_load($safeeval);
+	    }
+	    my %previous = &Apache::response::check_for_previous($response,
+								 $part,$id);
+	    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
+		$response;
+	    my $error;
+	    ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
+		$response;
+	    
+	    my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
+	    if (!&Apache::inputtags::valid_award($award)) {
+		$error = $award;
+		$award = 'ERROR';
+	    }
+	    &Apache::response::handle_previous(\%previous,$award);
+	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
+		$award;
+	    if ($error) {
+		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
+		    $error;
+	    }
+	}
+    }
+    pop(@Apache::lonxml::namespace);
+    &Apache::lonxml::deregister('Apache::response',('answer'));
+    &Apache::response::end_response();
+    return $result;
+}
+
+sub start_answer {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result;
+    $Apache::response::custom_answer=
+	&Apache::lonxml::get_all_text_unbalanced("/answer",$parser);
+    $Apache::response::custom_answer_type=
+	lc(&Apache::lonxml::get_param('type',$parstack,$safeeval));
+    $Apache::response::custom_answer_type =~ s/\s+//g;
+    if ($target eq "edit" ) {
+	$result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
+	$result.=&Apache::edit::editfield($token->[1],
+					  $Apache::response::custom_answer,
+					  '',80,4);
+    } elsif ( $target eq "modified" ) {
+	$result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
+    }
+    return $result;
+}
+
+sub end_answer {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    if ($target eq 'edit' ) {
+	return &Apache::edit::end_table();
+    }
+}
+
 sub decide_package {
     my ($tagstack)=@_;
     my $package;
@@ -488,15 +592,30 @@ sub setup_params {
     }
 }
 
+{
+    my @answer_bits;
+
 sub answer_header {
-    my ($type) = @_;
+    my ($type,$increment) = @_;
     my $result;
     if ($env{'form.answer_output_mode'} eq 'tex') {
-	$result = ' \vskip 0 mm \begin{tabular}{|c|}\hline Answer for Part: \verb|'.
-                  $Apache::inputtags::part.'| \\\\ \hline ';
+	undef(@answer_bits);
+	my $bit;
+	if ($Apache::lonhomework::type eq 'exam') {
+	    $bit = ($Apache::lonxml::counter+$increment).') ';
+	} else {
+	    $bit .= ' Answer for Part: \verb|'.
+		$Apache::inputtags::part.'| ';
+	}
+	push(@answer_bits,$bit);
     } else {
-	$result = '<table border="1"><tr><td>Answer for Part:'.
-	    $Apache::inputtags::part. '</td>'."\n";
+	$result  = '<table border="1"><tr>';
+	if ($Apache::lonhomework::type eq 'exam') {
+	    $result .= '<td>'.$Apache::lonxml::counter. ')</td>';
+	} else {
+	    $result .= '<td>Answer for Part:'.$Apache::inputtags::part.'</td>';
+	}
+	$result .= "\n";
     }
     return $result;
 }
@@ -513,7 +632,9 @@ sub answer_part {
 		last;
 	    }
 	}
-	$result = '\verb'.$to_use.$answer.$to_use.'\\\\ \hline ';
+	if ($answer ne '') {
+	    push(@answer_bits,'\verb'.$to_use.$answer.$to_use);
+	}
     } else {
 	$result = '<td>'.$answer.'</td>';
     }
@@ -524,13 +645,18 @@ sub answer_footer {
     my ($type) = @_;
     my $result;
     if ($env{'form.answer_output_mode'} eq 'tex') {
-	$result = ' \end{tabular} \vskip 0 mm ';
+	my $columns = scalar(@answer_bits);
+	$result  = ' \vskip 0 mm \begin{tabular}{|'.'c|'x$columns.'}\hline ';
+	$result .= join(' & ',@answer_bits);
+	$result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
     } else {
 	$result = '</tr></table>';
     }
     return $result;
 }
 
+}
+
 sub showallfoils {
     if (defined($env{'form.showallfoils'})) {
 	my ($symb)=&Apache::lonxml::whichuser();
@@ -754,6 +880,28 @@ sub submitted {
     return 0;
 }
 
+sub add_to_gradingqueue {
+    my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
+    if (   $courseid eq ''
+	|| $symb eq ''
+	|| $env{'request.state'} eq 'construct') {
+	return;
+    }
+
+    my %queue_info = ( 'type' => 'problem',
+		       'time' => time);
+
+    if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
+	$queue_info{'slot'}=
+	     $Apache::lonhomework::history{"resource.0.checkedin.slot"};
+    }
+
+    my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
+    if ($result ne 'ok') {
+	&Apache::lonxml::error("add_to_queue said $result");
+    }
+}
+
 # basically undef and 0 (both false) mean that they still have work to do
 # and all true values mean that they can't do any more work
 #