Return to rankresponse.pm CVS log

Up to [LON-CAPA] / loncom / homework

authoring space overhaul
this update tries to improve the user experience of the authoring space.

added codemirror for xml editor and script tags in colorful editor
added possibility to deactivate codemirror in author settings
added dropdown menu to insert problem templates into xml editor (thanks to tobias reinhardt)
added feature of saving current scrollposition on save when editing problems
added possibility to fold blocks in colorful editor, this state will be saved and restored
added shortcuts to create empty problems, html files and directories

and other smaller features and bugfixes

# The LearningOnline Network with CAPA
# rank style response
#
# $Id: rankresponse.pm,v 1.72 2015/01/19 15:35:53 goltermann Exp $
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#

package Apache::rankresponse;
use strict;
use HTML::Entities();
use Apache::optionresponse();
use Apache::lonlocal;
use Apache::lonxml;
use Apache::lonnet;

BEGIN {
    &Apache::lonxml::register('Apache::rankresponse',('rankresponse'));
}

sub start_rankresponse {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    #when in a rank response use these
    &Apache::lonxml::register('Apache::rankresponse',
			      ('foilgroup','foil','conceptgroup'));
    push (@Apache::lonxml::namespace,'rankresponse');
    my $id = &Apache::response::start_response($parstack,$safeeval);
    %Apache::hint::rank=();
    undef(%Apache::response::foilnames);
    if ($target eq 'meta') {
	$result=&Apache::response::meta_package_write('rankresponse');
    } elsif ($target eq 'edit' ) {
	$result.=&Apache::edit::start_table($token)
           .'<tr><td>'.&Apache::loncommon::insert_folding_button()
           .&Apache::lonxml::description($token).'</td>'
           .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
           .&Apache::edit::deletelist($target,$token)
           .'</span></td>'
           .'<td>&nbsp;'.&Apache::edit::end_row()
           .&Apache::edit::start_spanning_row();
	
	$result.=
	    &Apache::edit::text_arg('Max Number Of Shown Foils:','max',$token,'4').
	    &Apache::edit::select_arg('Randomize Foil Order:','randomize',
				      ['yes','no'],$token).
	    &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n";
    } elsif ($target eq 'modified') {
	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
						     $safeeval,'max',
						     'randomize');
	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
    } elsif ($target eq 'analyze') {
	my $part_id="$Apache::inputtags::part.$id";
        $Apache::lonhomework::analyze{"$part_id.type"} = 'rankresponse';
	push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
	push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} }, 1);

    }
    return $result;
}

sub end_rankresponse {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
    &Apache::response::end_response;
    pop @Apache::lonxml::namespace;
    &Apache::lonxml::deregister('Apache::rankresponse',
				('foilgroup','foil','conceptgroup'));
    undef(%Apache::response::foilnames);
    return $result;
}

%Apache::response::foilgroup=();
sub start_foilgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    %Apache::response::foilgroup=();
    $Apache::rankresponse::conceptgroup=0;
    &Apache::response::pushrandomnumber(undef,$target);
    return $result;
}

sub end_foilgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
	$target eq 'tex' || $target eq 'analyze') {
	my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
	my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
						   $safeeval,'-2');
	my $tol = &Apache::lonxml::get_param('tol',$parstack,$safeeval,'-2');
	if (!defined($tol)) { $tol=0; }
	if ($target eq 'web' || $target eq 'tex') {
	    $result=&displayfoils($target,$max,$randomize,$tol);
	    $Apache::lonxml::post_evaluate=0;
	} elsif ($target eq 'answer' ) {
	    $result=&displayanswers($max,$randomize,$tol);
	} elsif ( $target eq 'grade') {
	    &grade_response($max,$randomize,$tol);
	} elsif ( $target eq 'analyze') {
	    my @shown = &whichfoils($max,$randomize);
	    &Apache::response::analyze_store_foilgroup(\@shown,
						  ['text','value','location']);
	    my $part_id=
		"$Apache::inputtags::part.$Apache::inputtags::response[-1]";
	    $Apache::lonhomework::analyze{"$part_id.tol"}=$tol;
	}
	my $part = $Apache::inputtags::part;
	my $id   = $Apache::inputtags::response[-1];
        my ($numrows,$bubbles_per_row);
        if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
            my (@whichfoils)=&whichfoils($max,$randomize);
            ($numrows,$bubbles_per_row) =
                &Apache::optionresponse::getnumrows(scalar(@whichfoils));
        }
        if ($numrows < 1) {
            $numrows = 1;
        }
        my $increment = &getfoilcounts($max) * $numrows;
	&Apache::lonxml::increment_counter($increment,"$part.$id");
	if ($target eq 'analyze') {
	    &Apache::lonhomework::set_bubble_lines();
	}
    } elsif ($target eq 'edit') {
	$result=&Apache::edit::end_table();
    }
    &Apache::response::poprandomnumber();
    return $result;
}

sub get_correct_order {
    my ($tol,@foils) =@_;
    my @correctorder;
    my @value_names;
    foreach my $name (@foils) {
	my @pair=($Apache::response::foilgroup{$name.'.value'},$name);
	push(@value_names,\@pair);
    }
    @value_names =
	sort {
	    if (abs($a->[0] - $b->[0]) > $tol) {return ($a->[0] <=> $b->[0]);}
	    return 0;
	} @value_names;
    my @value_names_tmp=@value_names;
    my $firstpair=shift(@value_names_tmp);
    my $order=1;
    my %order;
    my $count=1;
    my $lastvalue=$firstpair->[0];
    $order{$firstpair->[1]}=$order;
    foreach my $pair (@value_names_tmp) {
	$count++;
	if (abs($pair->[0]-$lastvalue) > $tol ) {
	    $order=$count;
	}
	$order{$pair->[1]}=$order;
	$lastvalue=$pair->[0];
    }
    foreach my $name (@foils) {
	push(@correctorder,$order{$name});
    }
    &Apache::lonhomework::showhash('b' => \@value_names);
    &Apache::lonhomework::showhash('b' => \@correctorder);
    return @correctorder;
}

sub displayanswers {
    my ($max,$randomize,$tol,@opt)=@_;
    my @names;
    if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
        @names = @{ $Apache::response::foilgroup{'names'} };
    }
    return if (!@names);
    my @whichfoils = &whichfoils($max,$randomize);
    my @correctorder=&get_correct_order($tol,@whichfoils);
    my $result;
    if ($Apache::lonhomework::type eq 'exam') {
	my @alphabet = ('A'..'Z');
	my $i=0;
	foreach my $order (@correctorder) {
	    $result.=&Apache::response::answer_header('rankresponse',$i++);
	    $result.=&Apache::response::answer_part('rankresponse',
						    $alphabet[$order-1]);
	    $result.=&Apache::response::answer_part('rankresponse',$order);
	    $result.=&Apache::response::answer_footer('rankresponse');
	}
    } else {
	$result=&Apache::response::answer_header('rankresponse');
	foreach my $order (@correctorder) {
	    $result.=&Apache::response::answer_part('rankresponse',$order);
	}
	$result.=&Apache::response::answer_footer('rankresponse');
    }
    return $result;
}

sub check_response_order {
    my (%responsehash)=@_;
    my @order=sort( {$a <=> $b} values(%responsehash));
    my $lastvalue=0;
    my $expected=1;
    my $malformed=0;
    foreach my $current (@order) {
	&Apache::lonxml::debug("$lastvalue $expected $malformed");
	if (!($current == $lastvalue || $current == $expected)) {
	    $malformed=1;
	}
	$expected++;
	$lastvalue=$current;
    }
    return $malformed;
}

sub grade_response {
    my ($max,$randomize,$tol)=@_;
    my (@whichfoils)=&whichfoils($max,$randomize);
    if (!&Apache::response::submitted()) { return; }
    my %responsehash;
    my %grade;
    my ($temp,$right,$wrong,$ignored)=(1,0,0,0);
    my @correctorder=&get_correct_order($tol,@whichfoils);
    my ($numrows,$bubbles_per_row);
    if ($Apache::lonhomework::scantronmode) {
        my $numitems = scalar(@whichfoils);
        ($numrows,$bubbles_per_row) =
            &Apache::optionresponse::getnumrows($numitems);
    }
    if ($numrows < 1) {
        $numrows = 1;
    }

    foreach my $name (@whichfoils) {
        my $response;
        if ($numrows > 1) {
            my $num = $temp;
            my $totalnum;
            for (my $i=0; $i<$numrows; $i++) {
                my $item = &Apache::response::getresponse($num,'A is 1');
                if ($item =~ /^\d+$/) {
                    $totalnum = $i*$bubbles_per_row + $item;
                }
                $num ++;
            }
            $response = $totalnum;
            $temp += $numrows;
        } else {
            $response = &Apache::response::getresponse($temp,'A is 1');
            $temp ++;
        }
	my $value=shift(@correctorder);
	if ( $response =~ /[^\s]/) {
	    $responsehash{$name}=$response;
	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
	    if ($value eq $response) {
		$grade{$name}='1'; $right++;
	    } else {
		$grade{$name}='0'; $wrong++;
	    }
	} else {
	    $ignored++;
	}
    }
    my $malformed=&check_response_order(%responsehash);
    my $part=$Apache::inputtags::part;
    my $id = $Apache::inputtags::response['-1'];
    my $responsestr=&Apache::lonnet::hash2str(%responsehash);
    my $gradestr   =&Apache::lonnet::hash2str(%grade);
    my %previous=&Apache::response::check_for_previous($responsestr,
						       $part,$id);
    &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored and was $malformed malformed");
    my $ad;
    if ($malformed) {
	$ad='MISORDERED_RANK';
    } elsif ($wrong==0 && $ignored==0) {
	$ad='EXACT_ANS';
    } elsif ($wrong==0 && $right==0) {
	#nothing submitted
    } else {
	if ($ignored==0) {
	    $ad='INCORRECT';
	} else {
	    $ad='MISSING_ANSWER';
	}
    }
    if (($ad eq 'INCORRECT' || $ad eq 'EXACT_ANS')) {
        if ($Apache::lonhomework::type eq 'survey') {
            $ad='SUBMITTED';
        } elsif ($Apache::lonhomework::type eq 'surveycred') {
	    $ad='SUBMITTED_CREDIT';
        } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
            $ad='ANONYMOUS';
        } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
            $ad='ANONYMOUS_CREDIT';
        } else {
            $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
        }
    } else {
	$Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
    }
    if ($Apache::lonhomework::type eq 'randomizetry') {
        if ($Apache::lonhomework::type eq 'randomizetry') {
            $Apache::lonhomework::results{"resource.$part.$id.foilorder"} = &Apache::lonnet::array2str(@whichfoils);
        }
    }
    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
	$responsestr;
    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
    &Apache::response::handle_previous(\%previous,$ad);
}

sub format_prior_answer {
    my ($mode,$answer,$other_data) = @_;
    my %lastresponse=&Apache::lonnet::str2hash($answer);
    my $foil_order  =$other_data->[0];
    my %grading     =&Apache::lonnet::str2hash($other_data->[1]);
    my $output;
    foreach my $name (@{ $foil_order }) {
        if (defined($lastresponse{$name})) {
            $output .= '<tr><td>'.&HTML::Entities::encode($lastresponse{$name},'<>&"').'</td></tr>';
        } else {
            $output .= '<tr><td>&nbsp;</td></tr>';
        }
    }
    return if (!defined($output));
    $output =
	'<table class="LC_prior_rank">'.$output.'</table>';
    return $output;
}

sub displayfoils {
    my ($target,$max,$randomize,$tol)=@_;
    my $result;
    my @alphabet=('A'..'Z');
    my (@whichfoils)=&whichfoils($max,$randomize);
    my $part=$Apache::inputtags::part;
    my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
    my @whichopt=(1..($#whichfoils+1));
    my @correctorder=&get_correct_order($tol,@whichfoils);
    if ( &Apache::response::show_answer() && ($target ne 'tex')) {
	foreach my $name (@whichfoils) {
	    my $text=$Apache::response::foilgroup{$name.'.text'};
	    my $value=shift(@correctorder);
	    if ($target eq 'web') {
		$result.='<br /><b>'.$value.':</b> '.$text;
	    } else {
		$result.=' \strut\\\\\strut '.$value.':'.$text;
	    }
	}
    } else {
	my $i = 0;
	my $temp=1;
	my $id=$Apache::inputtags::response[-1];
	my $part=$Apache::inputtags::part;
        my ($lastresponse,$newvariation);
        if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
             ($Apache::lonhomework::type eq 'randomizetry')) &&
        ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
            if ($env{'form.'.$part.'.rndseed'} ne
                $Apache::lonhomework::history{"resource.$part.rndseed"}) {
                $newvariation = 1;
            }
        }
        unless ($newvariation) {
            if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
                (($env{'form.grade_username'} eq $env{'user.name'}) &&
                 ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
                $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
            } else {
                unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
                        ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
                    $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
                }
            }
        }
	my %lastresponse=&Apache::lonnet::str2hash($lastresponse); 
	my @alp = splice @alphabet, 0, $#whichopt + 1;
	my $internal_counter=$Apache::lonxml::counter;
        my ($numrows,$bubbles_per_row);
        if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
            ($numrows,$bubbles_per_row) = 
                &Apache::optionresponse::getnumrows(scalar(@alp));
        } else {
            $numrows = 1;
        }
        if($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
            $result .= '\strut \\\\ \strut \\\\' ;
        }
        foreach my $name (@whichfoils) {
	    my $lastopt=$lastresponse{$name};
	    my $optionlist='';
	    if ($target ne 'tex') {
                $optionlist = "<option></option>\n";
            } 
            if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
                my $fieldname = $env{'request.symb'}.'&part_'.$Apache::inputtags::part.'&rankresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'].':'.$temp;
                $optionlist =  &Apache::lonxml::print_pdf_start_combobox($fieldname);
            }
	    my $option;
	    foreach $option (@whichopt) {
		if ($option eq $lastopt) {
		    if ($target ne 'tex' ) {
                        $optionlist.="<option selected=\"selected\">$option</option>\n";
                    } elsif ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
                        $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option); 
                    }
		} else {
		    if ($target ne 'tex') {
                        $optionlist.="<option>$option</option>\n";
                    } elsif ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
                        $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option); 
                    }
		} 
	    }
	    if ($target ne 'tex' && $Apache::lonhomework::type ne 'exam') {
		$optionlist='<select onchange="javascript:setSubmittedPart(\''.
		  $part.'\');" name="HWVAL_'.
		    $Apache::inputtags::response[-1].':'.$temp.'">'.
		        $optionlist."</select>\n";
	    } elsif ($env{'form.pdfFormFields'} eq 'yes') {
                #do nothing
            } else {
		$optionlist=' '.$temp.' '.$optionlist.' ';
	    }
	    my $text=$Apache::response::foilgroup{$name.'.text'};
	    if ($target ne 'tex') {
		if ($Apache::lonhomework::type ne 'exam') {
		    $result.='<br />'.$optionlist.$text."\n";
		} else {
		    $result.='<br />'.$text."\n";
		}
		if ($Apache::lonhomework::type eq 'exam') {
		    my @values=(1..scalar(@whichopt));
		    $result.=&Apache::optionresponse::webbubbles(\@values,\@whichopt,$temp,$lastopt);
		}
	    } else {
		if ($Apache::lonhomework::type eq 'exam') {
                    my $itemlabel;
                    if ($numrows == 1) {
                        $itemlabel = '\item[\textbf{'.$internal_counter.'}]';
                    } else {
                        my $linetext;
                        for (my $i=0; $i<$numrows; $i++) {
                            $linetext .= $internal_counter+$i.', ';
                        }
                        $linetext =~ s/,\s$//;
                        $itemlabel = '\item[\small {\textbf{'.$linetext.'}}]'.
                                     ' {\footnotesize '.
                                     &mt('(Bubble once in [_1] lines)',$numrows).
                                     '} \hspace*{\fill} \\\\';
                    }
		    $result .= '\vskip 0 mm '.$text.' \vskip 0 mm '."\n";
		    $result .= '\vskip -1 mm';
                    $result .= '\begin{enumerate}'.$itemlabel;
		    $result .= &Apache::optionresponse::bubbles(\@alp,\@whichopt,'rankresponse',undef,$numrows,$bubbles_per_row,$internal_counter);
                    $result .= '\end{enumerate} \vskip -8 mm \strut ';
		    $internal_counter += $numrows;
		} else {
                    if($env{'form.pdfFormFields'} ne 'yes') {
		        $result.=' \vskip 0mm \framebox[5 mm][s]{\tiny\strut} '.$text."\n";
                    } else {
                        $result.= $optionlist.' '. &Apache::lonxml::print_pdf_end_combobox($text).'\strut \\\\';
                    }
		}
	    }
	    $temp++;
	}
    }
    if ($target eq 'web') {
        my $questiontype;
        if ($Apache::lonhomework::type eq 'randomizetry') {
            $questiontype = $Apache::lonhomework::type;
        }
	&Apache::response::setup_prior_tries_hash(\&format_prior_answer,
						  [\@whichfoils,
						   'submissiongrading'],
                                                  $questiontype);
    }
    if ($target ne 'tex') {$result.="<br />";} else {$result.=' \vskip 0 mm ';}
    return $result;
}

sub getfoilcounts {
    my ($max)=@_;
    # +1 since instructors will count from 1
    my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
    if (&Apache::response::showallfoils()) { $max=$count; }
    if ($count>$max) { $count=$max } 
    &Apache::lonxml::debug("Count is $count from $max");
    return $count;
}

sub whichfoils {
    my ($max,$randomize)=@_;
    return &Apache::response::whichorder($max,$randomize,
					 &Apache::response::showallfoils(),
					 \%Apache::response::foilgroup);
}

sub start_conceptgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    $Apache::rankresponse::conceptgroup=1;
    %Apache::response::conceptgroup=();
    my $result;
    if ($target eq 'edit') {
	$result.=&Apache::edit::tag_start($target,$token,
					  "Concept Grouped Foils");
	$result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();
    }
    if ($target eq 'modified') {
	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
						     $safeeval,'concept');
	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
    }
    return $result;
}

sub end_conceptgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    $Apache::rankresponse::conceptgroup=0;
    my $result='';
    if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
	$target eq 'tex' || $target eq 'analyze') {
	#if not there aren't any foils to display and thus no question
	&Apache::response::pick_foil_for_concept($target,
						 ['value','text','location'],
						 \%Apache::hint::rank,
						 $parstack,$safeeval);
    } elsif ($target eq 'edit') {
	$result=&Apache::edit::end_table();
    }
    return $result;
}

sub insert_conceptgroup {
    my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
    return $result;
}

sub start_foil {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result='';
    if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
	&Apache::lonxml::startredirection;
	if ($target eq 'analyze') {
	    &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
	}
    } elsif ($target eq 'edit') {
	$result=&Apache::edit::tag_start($target,$token,"Foil");
	my $level='-2';
	if ($$tagstack[-2] eq 'conceptgroup') { $level = '-3'; }
	$result.=&Apache::edit::text_arg('Name:','name',$token);
	$result.= &Apache::edit::text_arg('Rank Value:','value',$token,'15');
	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
						 $safeeval,'-3');
	if ($randomize ne 'no') {
	    $result.=&Apache::edit::select_arg('Location:','location',
					     ['random','top','bottom'],$token);
	}
	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
    } elsif ($target eq 'modified') {
	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
						     $safeeval,'value',
						     'name','location');
	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
    }
    return $result;
}

sub end_foil {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $text ='';
    my $result = '';
    if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
	$text=&Apache::lonxml::endredirection;
    }
    if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
	$target eq 'tex' || $target eq 'analyze') {
	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
	if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
	    $text='\vskip 5mm $\triangleright$ '.$text;
	}
	if ($value ne 'unused') {
	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
	    &Apache::lonxml::debug("Got a name of :$name:");
	    if ($name eq "") {
		&Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
		$name=$Apache::lonxml::curdepth;
	    }
	    &Apache::lonxml::debug("Using a name of :$name:");
	    if (defined($Apache::response::foilnames{$name})) {
		&Apache::lonxml::error(&mt('Foil name [_1] appears more than once. Foil names need to be unique.','<b><tt>'.$name.'</tt></b>'));
	    }
	    $Apache::response::foilnames{$name}++;
	    my $location =&Apache::lonxml::get_param('location',$parstack,
						     $safeeval);
	    if ( $Apache::rankresponse::conceptgroup
		 && !&Apache::response::showallfoils() ) {
		push @{ $Apache::response::conceptgroup{'names'} }, $name;
		$Apache::response::conceptgroup{"$name.value"} = $value;
		$Apache::response::conceptgroup{"$name.text"} = $text;
		$Apache::response::conceptgroup{"$name.location"} = $location;
	    } else {
		push @{ $Apache::response::foilgroup{'names'} }, $name;
		$Apache::response::foilgroup{"$name.value"} = $value;
		$Apache::response::foilgroup{"$name.text"} = $text;
		$Apache::response::foilgroup{"$name.location"} = $location;
	    }
	}
    }
    if ($target eq 'edit') {
	$result.= &Apache::edit::tag_end($target,$token,'');
    }
    return $result;
}

sub insert_foil {
    return '
<foil name="" value="unused">
<startouttext />
<endouttext />
</foil>';
}
1;
__END__