File:  [LON-CAPA] / loncom / homework / matchresponse.pm
Revision 1.94: download - view: text, annotated - select for diffs
Thu Jun 7 15:58:10 2018 UTC (3 years, 11 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_12_X, HEAD
- Bug 6883 -- specific to MS Edge on Windows 10 (rev. 1803).

# The LearningOnline Network with CAPA
# Full matching style response
#
# $Id: matchresponse.pm,v 1.94 2018/06/07 15:58:10 raeburn 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::matchresponse;
use strict;
use HTML::Entities();
use Math::Random();
use Apache::optionresponse();
use Apache::lonlocal;
use Apache::lonnet;
use Apache::lonxml;
use POSIX qw(ceil);

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

sub start_matchresponse {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    #when in a matchresponse use these
    &Apache::lonxml::register('Apache::matchresponse',
			      ('foilgroup','foil','conceptgroup','item',
			       'itemgroup'));
    push (@Apache::lonxml::namespace,'matchresponse');
    my $id = &Apache::response::start_response($parstack,$safeeval);
    %Apache::hint::match=();
    undef(%Apache::response::foilnames);
    if ($target eq 'meta') {
	$result=&Apache::response::meta_package_write('matchresponse');
    } elsif ($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"} = 'matchresponse';
	push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
	push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
	      1);
    }
    return $result;
}

sub end_matchresponse {
    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::matchresponse',
				('foilgroup','foil','conceptgroup'));
    undef(%Apache::response::foilnames);
    return $result;
}

%Apache::response::itemgroup=();
sub start_itemgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    %Apache::response::itemgroup=();
    %Apache::matchresponse::itemtable=();

    if ($target eq 'edit') {
	$result=&Apache::edit::tag_start($target,$token);
	$result.=&Apache::edit::select_arg('Randomize Order:','randomize',
					   ['yes','no'],$token);
	$result.=&Apache::edit::select_arg('Items Display Location:',
					   'location',
					   ['top','bottom','left','right'],
					   $token);
	$result.=&Apache::edit::select_arg('Items Display Direction:',
					   'direction',
					   ['vertical','horizontal'],
					   $token);
        $result.=&Apache::edit::select_arg('Items Columns:',
                                           'columns',
                                           [['','default'],'1','2','3','4'],
                                            $token);
	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
    } elsif ($target eq 'modified') {
	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
						     $safeeval,'randomize',
						     'location','direction',
                                                     'columns');
	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
    } elsif ($target eq 'web' or $target eq 'tex') {
	$Apache::matchresponse::itemtable{'location'}=
	    &Apache::lonxml::get_param('location',$parstack,$safeeval);
	$Apache::matchresponse::TeXitemgroupwidth=&Apache::lonxml::get_param('TeXitemgroupwidth',$parstack,$safeeval,undef,0);
    }
    return $result;
}

sub end_itemgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;

    if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
    if (ref($Apache::response::itemgroup{'names'}) eq 'ARRAY') {
        if(!@{ $Apache::response::itemgroup{'names'} }) { return; }
    } else {
        return;
    }
    my @names=@{ $Apache::response::itemgroup{'names'} };
    my $randomize =&Apache::lonxml::get_param('randomize',$parstack,$safeeval);
    if ($randomize ne 'no' ) {
	@names=&Apache::response::whichorder($#names+1,$randomize,0,
					 \%Apache::response::itemgroup);
    }
    if ($target eq 'analyze') {
	my $partid="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
	push (@{ $Apache::lonhomework::analyze{"$partid.items"} }, @names);
    }
    my %letter_name_map;
    my %name_letter_map;
    my @alphabet=('A'..'Z');
    my $i=0;
    foreach my $name (@names) {
	$letter_name_map{$alphabet[$i]}=$name;
	$name_letter_map{$name}=$alphabet[$i];
	$i++;
    }
    $Apache::response::itemgroup{'letter_name_map'}=\%letter_name_map;
    $Apache::response::itemgroup{'name_letter_map'}=\%name_letter_map;
    my $direction=&Apache::lonxml::get_param('direction',$parstack,$safeeval);
    my $columns=&Apache::lonxml::get_param('columns',$parstack,$safeeval);
    
    unless ($columns =~ /^\d+$/) {
        undef($columns);
    }
    if ($target eq 'web') {
	
	my $table='<table class="LC_itemgroup">'; # extra space to match what latex does.
        if ((!$columns) || ($columns < 0)) {
            if ($direction eq 'horizontal') {
                if (@names > 0) { 
                    $columns = scalar(@names);
                } else {
                    $columns = 1;
                }
            } else {
                $columns = 1;
            }
        }
        my $rows=ceil(scalar(@names)/$columns);
        my $endloop = $columns*$rows;
        for (my $i=0; $i<$endloop; $i++) {
            my $label = '&nbsp;';
            my $item = '&nbsp;';
            my $index;
            if ($direction eq 'horizontal') {
                $index = $i;
            } else {
                $index = ($i % $columns)*$rows+int($i/$columns);
            }
            if ($index < scalar(@names)) {
                $label = $alphabet[$index];
                $item = $Apache::response::itemgroup{$names[$index].'.text'};
            }
            if ($i % $columns == 0) {
                $table.='<tr>';
            }
            $table.= '<td>'.$label.'</td><td>'.$item.'</td>';
            if ($columns > 1) {
                $table .= '<td>&nbsp;</td>';
            }
            if ( ! (($i+1) % $columns) ) {
                $table.='</tr>';
            }
        }
	$table.='</table>';
	$Apache::matchresponse::itemtable{'display'}=$table;
	$Apache::lonxml::post_evaluate=0;
    } elsif ($target eq 'tex') {
	my $table=' \begin{description}\setlength{\leftmargin}{2em}\setlength{\labelwidth}{1em}\setlength{\itemsep}{0.5pt plus1pt minus2pt}\setlength{\listparindent}{0em} ';
	my $i=0;
        my ($numrows,$bubbles_per_row);
        if ($Apache::lonhomework::type eq 'exam') {
            ($numrows,$bubbles_per_row) = 
                &Apache::optionresponse::getnumrows(scalar(@names)); 
        } else {
            $numrows = 1;
        }
	foreach my $name (@names) {
	    # $Apache::response::itemgroup{$name.'.text'}=~s/\$\$/\$/g;
            my $item;
            if (($numrows > 1) && ($bubbles_per_row > 0)) {
                my $num = 1+int($i/$bubbles_per_row);
                my $idx = int($i % $bubbles_per_row);
                if ($idx == 0) {
                    if ($num == 1) {
                        $table .= '\item[\footnotesize {'.&mt('(first line)').'}]';
                    } else {
                        $table .= '\item[\footnotesize {'.&mt('(next line)').'}]';
                    }
                }
                $item = $alphabet[$idx];
            } else {
                $item = $alphabet[$i];
            }
	    $table.='\item['.$item.'] '.
		$Apache::response::itemgroup{$name.'.text'};
	    $i++;
	}
	$table.=' \end{description}  \strut ';
	if ($Apache::lonhomework::type eq 'exam')  {$table.='\vskip -13 mm \strut ';}
	$Apache::matchresponse::itemtable{'display'}=$table;
	$Apache::lonxml::post_evaluate=0;
    }
    return $result;
}

sub start_item {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result='';
    if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
	&Apache::lonxml::startredirection;
    } elsif ($target eq 'edit') {
	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
						 $safeeval,'-2');
	$result=&Apache::edit::tag_start($target,$token,"Item");
	$result.=&Apache::edit::text_arg('Name:','name',$token);
	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,
						     $safeeval,'name',
						     'location');
	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
    }
    return $result;
}

sub end_item {
    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 'edit' || $target eq 'tex' || $target eq 'analyze') {
	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
	my $location=&Apache::lonxml::get_param('location',$parstack,
						$safeeval);
	&Apache::lonxml::debug("Got a name of :$name:");
	if ($name eq "") { $name=$Apache::lonxml::curdepth; }
	&Apache::lonxml::debug("Using a name of :$name:");
	push @{ $Apache::response::itemgroup{'names'} }, $name;
	$Apache::response::itemgroup{"$name.text"} = $text;
	$Apache::response::itemgroup{"$name.location"} = $location;
    }
    if ($target eq 'edit') {
	$result.= &Apache::edit::tag_end($target,$token,'');
    }
    return $result;
}

sub insert_item {
    return '
<item name="">
<startouttext />
<endouttext />
</item>';
}

%Apache::response::foilgroup=();
sub start_foilgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    %Apache::response::foilgroup=();
    $Apache::matchresponse::conceptgroup=0;
    &Apache::response::pushrandomnumber(undef,$target);
    if ($target eq 'edit') {
	$result.=&Apache::edit::start_table($token)
	    .'<tr><td>'.&Apache::loncommon::insert_folding_button()
            .&mt('Collection Of Foils').'</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()."\n";
    }
    return $result;
}

sub end_foilgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    my $result;
    my $part        = $Apache::inputtags::part;
    my $response_id = $Apache::inputtags::response[-1];

    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,
						   $safeeval,'-2');
	if ($target eq 'web' || $target eq 'tex') {
	    $result=&displayfoils($target,$max,$randomize);
	    $Apache::lonxml::post_evaluate=0;
	} elsif ($target eq 'answer' ) {
	    $result=&displayanswers($max,$randomize);
	} elsif ( $target eq 'grade') {
	    &grade_response($max,$randomize);
	} elsif ( $target eq 'analyze') {
	    my @shown=&whichfoils($max,$randomize);
	    &Apache::response::analyze_store_foilgroup(\@shown,
						 ['text','value','location']);
	    #FIXME need to store options in some way
	}
        my ($numrows,$bubbles_per_row);
        if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
            my $numitems;
            if (ref($Apache::response::itemgroup{'names'}) eq 'ARRAY') {
                $numitems = scalar(@{ $Apache::response::itemgroup{'names'} });
                ($numrows,$bubbles_per_row) =
                    &Apache::optionresponse::getnumrows($numitems);
            }
        }
        if ($numrows < 1) {
            $numrows = 1;
        }
        my $increment = &getfoilcounts($max) * $numrows;
	&Apache::lonxml::increment_counter($increment,"$part.$response_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 whichfoils {
    my ($max,$randomize)=@_;
    return &Apache::response::whichorder(&getfoilcounts($max),
					 $randomize,
					 &Apache::response::showallfoils(),
					 \%Apache::response::foilgroup);
}

sub displayanswers {
    my ($max,$randomize,@opt)=@_;
    if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
        if (!@{ $Apache::response::foilgroup{'names'} }) { return; }
    } else {
        return;
    }
    my @names = @{ $Apache::response::foilgroup{'names'} };
    my @whichfoils = &Apache::response::whichorder(&getfoilcounts($max),
						   $randomize,
					  &Apache::response::showallfoils(),
					 \%Apache::response::foilgroup);
    my %name_letter_map;
    if (ref($Apache::response::itemgroup{'name_letter_map'}) eq 'HASH') {
        if (%{$Apache::response::itemgroup{'name_letter_map'}}) {
	    %name_letter_map=
	        %{ $Apache::response::itemgroup{'name_letter_map'} };
        }
    }
    my $result;
    if ($Apache::lonhomework::type eq 'exam') {
	my $i=0;
	foreach my $name (@whichfoils) {
	    $result.=&Apache::response::answer_header('matchresponse',$i++);
	    my $value_name=$Apache::response::foilgroup{$name.'.value'};
	    my $letter=$name_letter_map{$value_name};
	    $result.=&Apache::response::answer_part('matchresponse',$letter);
	    $result.=&Apache::response::answer_footer('matchresponse');
	}
    } else {
	$result=&Apache::response::answer_header('matchresponse');
	foreach my $name (@whichfoils) {
	    my $value_name=$Apache::response::foilgroup{$name.'.value'};
	    my $letter=$name_letter_map{$value_name};
	    $result.=&Apache::response::answer_part('matchresponse',$letter);
	}
	$result.=&Apache::response::answer_footer('matchresponse');
    }
    return $result;
}


sub grade_response {
    my ($max,$randomize)=@_;
    my (@whichfoils)=&Apache::response::whichorder(&getfoilcounts($max),
						   $randomize,
				            &Apache::response::showallfoils(),
				           \%Apache::response::foilgroup);
    if (!&Apache::response::submitted()) { return; }
    my %responsehash;
    my %grade;
    my %answerhash;
    my ($temp,$right,$wrong,$ignored)=(1,0,0,0);
    my %letter_name_map;
    if (ref($Apache::response::itemgroup{'letter_name_map'}) eq 'HASH') {
        if (%{$Apache::response::itemgroup{'letter_name_map'}}) {
	    %letter_name_map=
	        %{ $Apache::response::itemgroup{'letter_name_map'} };
        }
    }
    my @items;
    my $numitems = scalar(@{ $Apache::response::itemgroup{'names'} });
    my ($numrows,$bubbles_per_row);
    if ($Apache::lonhomework::scantronmode) {
        my $numitems = scalar(@{ $Apache::response::itemgroup{'names'} });
        ($numrows,$bubbles_per_row) =
            &Apache::optionresponse::getnumrows($numitems);
    }
    if ($numrows < 1) {
        $numrows = 1;
    }
    my @alphabet=('A'..'Z');
    my %nums_from_letters;
    for (my $i=0; $i<@alphabet; $i++) {
        $nums_from_letters{$alphabet[$i]} = $i;
    }
    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,'letter');
                if ($item =~ /^\w$/) {
                    $totalnum = $i*$bubbles_per_row + $nums_from_letters{$item};
                }
                $num ++;
            }
            if ($totalnum =~ /^\d+$/) {
                $response = $alphabet[$totalnum];
            }
            $temp += $numrows;
        } else {
	    $response = &Apache::response::getresponse($temp,'letter');
            $temp ++;
        }
	push(@items,$response);
	my $responsename = $letter_name_map{$response};
	my $value=$Apache::response::foilgroup{$name.'.value'};
        if ($Apache::lonhomework::type eq 'randomizetry') {
            $answerhash{$name} = $value;
        }
	if ( $response =~ /[^\s]/) {
	    $responsehash{$name}=$responsename;
	    &Apache::lonxml::debug("submitted a $response($responsename) for $value<br />\n");
	    if ($value eq $responsename) {
		$grade{$name}='1'; $right++;
	    } else {
		$grade{$name}='0'; $wrong++;
	    }
	} else {
	    $ignored++;
	}
    }
    my $part=$Apache::inputtags::part;
    my $nonlenient=&Apache::optionresponse::grading_is_nonlenient($part);
    my $id = $Apache::inputtags::response['-1'];
    my $responsestr=&Apache::lonnet::hash2str(%responsehash);
    my $itemstr    =&Apache::lonnet::array2str(@items);
    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 ");
    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
	$responsestr;
    $Apache::lonhomework::results{"resource.$part.$id.submissionitems"}=
	$itemstr;
    $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=
	$gradestr;
    if ($Apache::lonhomework::type eq 'randomizetry') {
        $Apache::lonhomework::results{"resource.$part.$id.foilorder"} = &Apache::lonnet::array2str(@whichfoils);
    }
    if (($Apache::lonhomework::type eq 'survey') ||
        ($Apache::lonhomework::type eq 'surveycred') ||
        ($Apache::lonhomework::type eq 'anonsurvey') ||
        ($Apache::lonhomework::type eq 'anonsurveycred')) {
	if ($ignored == 0) {
	    my $ad;
            if ($Apache::lonhomework::type eq 'anonsurvey') {
                $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS';
            } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
                $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS_CREDIT';
            } elsif ($Apache::lonhomework::type eq 'surveycred') {
                $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED_CREDIT';
            } else {
                $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
            }
	    &Apache::response::handle_previous(\%previous,$ad);
	} elsif ($wrong==0 && $right==0) {
	} else {
	    my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='MISSING_ANSWER';
	    &Apache::response::handle_previous(\%previous,$ad);
	}
    } elsif ($nonlenient) {
        my $ad;
        if ($wrong==0 && $ignored==0) {
            $ad='EXACT_ANS';
        } elsif ($wrong==0 && $right==0) {
            #nothing submitted
        } else {
            if ($ignored==0) {
                $ad='INCORRECT';
            } else {
                $ad='MISSING_ANSWER';
            }
        }
        $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
        &Apache::response::handle_previous(\%previous,$ad);
    } else {
        my $ad;
        if ($wrong==0 && $right==0) {
            #nothing submitted only assign a score if we
            #need to override a previous grade
            if (defined($Apache::lonhomework::history{"resource.$part.$id.awarddetail"})) {
                $ad='ASSIGNED_SCORE';
            }
        } else {
            $ad='ASSIGNED_SCORE';
        }
        $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
        $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
            $right/(scalar(@whichfoils));
        $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
            scalar(@whichfoils);
    }
}

sub format_prior_answer {
    my ($mode,$answer,$other_data) = @_;
    my %answer      =&Apache::lonnet::str2hash($answer);
    my $foil_order  =$other_data->[0];
    my %grading     =&Apache::lonnet::str2hash($other_data->[1]);
    my @items       =&Apache::lonnet::str2array($other_data->[2]);
    my $output;
    
    foreach my $name (@{ $foil_order }) {
	my $item = &HTML::Entities::encode(shift(@items),'<>&"');
        if ($item eq '') {
            $item = '&nbsp;';
        }
	$output .= '<tr><td>'.$item.'</td></tr>';
    }
    return if (!defined($output));

    $output = '<table class="LC_prior_match">'.$output.'</table>';
    return $output;
}

sub itemdisplay {
    my ($location)=@_;
    if ($location eq 'top' &&
	!defined($Apache::matchresponse::itemtable{'location'})) {
	return $Apache::matchresponse::itemtable{'display'};
    }
    if ($Apache::matchresponse::itemtable{'location'} eq $location) {
	return $Apache::matchresponse::itemtable{'display'};
    }
    return undef;
}

sub displayfoils {
    my ($target,$max,$randomize)=@_;
    my ($tabsize, $lefttabsize, $righttabsize);

    my $result;
    my $question;
    my (@whichfoils)=&Apache::response::whichorder(&getfoilcounts($max),
						   $randomize,
				            &Apache::response::showallfoils(),
				           \%Apache::response::foilgroup);
    my $part=$Apache::inputtags::part;
    my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
    my %letter_name_map;
    if (ref($Apache::response::itemgroup{'letter_name_map'}) eq 'HASH') {
        if (%{$Apache::response::itemgroup{'letter_name_map'}}) {
	    %letter_name_map=
	        %{ $Apache::response::itemgroup{'letter_name_map'} };
        }
    }
    my %name_letter_map;
    if (ref($Apache::response::itemgroup{'name_letter_map'}) eq 'HASH') {
        if (%{$Apache::response::itemgroup{'name_letter_map'}}) {
	    %name_letter_map=
	        %{ $Apache::response::itemgroup{'name_letter_map'} };
        }
    }
    if ( &Apache::response::show_answer() && ($target ne 'tex')) {
	foreach my $name (@whichfoils) {
	    my $text=$Apache::response::foilgroup{$name.'.text'};
	    my $value=$Apache::response::foilgroup{$name.'.value'};
	    my $letter=$name_letter_map{$value};
	    if ($target eq 'tex') {
		$question.=' \\\\ '.$letter.':'.$text;
	    } else {
		$question.='<br /><b>'.$letter.':</b> '.$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 @alphabet=('A'..'Z');
	my @used_letters=sort(keys(%letter_name_map));
	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(@used_letters));
        } else {
            $numrows = 1;
        }
	foreach my $name (@whichfoils) {
	    my $lastopt=$lastresponse{$name};
	    my $last_letter=$name_letter_map{$lastopt};
	    my $optionlist = '';
	    if ($target ne 'tex') {
		$optionlist="<option value=\"\"></option>\n";
	    } else {
		if ($Apache::lonhomework::type ne 'exam') {
                    if($env{'form.pdfFormFields'} eq 'yes'
                       && $Apache::inputtags::status['-1'] eq 'CAN_ANSWER') {
                        my $fieldname = $env{'request.symb'} . '&part_'. $Apache::inputtags::part .'&matchresponse'. '&HWVAL_' . $Apache::inputtags::response['-1'] . ':' . $temp . '&submit_' . $Apache::inputtags::part . '&';
                        $optionlist = &Apache::lonxml::print_pdf_start_combobox($fieldname);
                    } else {

                        $optionlist='\framebox[10 mm][s]{\tiny\strut}';
                    }
                }
	    }
	    my $option;
	    foreach $option (@used_letters) {
		if ($option eq $last_letter) {
		    if ($target ne 'tex') {
                        $optionlist.="<option value=\"$option\" selected=\"selected\">$option</option>\n";
                    } elsif ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
                             && $Apache::inputtags::status['-1'] eq 'CAN_ANSWER'
                             && $Apache::lonhomework::type ne 'exam') {
                        $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option);
                    }
		} else {
		    if ($target ne 'tex') {
                        $optionlist.="<option value=\"$option\">$option</option>\n";
                    } elsif ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
                             && $Apache::inputtags::status['-1'] eq 'CAN_ANSWER'
                             && $Apache::lonhomework::type ne 'exam') {
                        $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($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";
	    }
	    my $text=$Apache::response::foilgroup{$name.'.text'};
	    #
            #  Factor out the tex computations of the left/right 1/2 minipage
	    #  widths for left or right positioning.  This allows us
	    #  to, if necessary constrain the bubble widths:
	    #
	    if ($target eq 'tex'   &&
		(&itemdisplay('left') || &itemdisplay('right'))) {
		$tabsize=&Apache::londefdef::recalc($env{'form.textwidth'});
		($lefttabsize,$righttabsize)=(0,0);
		if ($Apache::matchresponse::TeXitemgroupwidth ne '') {
		    $Apache::matchresponse::TeXitemgroupwidth=~/(\d*.?\d*)/;
		    $lefttabsize=$tabsize*$1/100;	
		    $righttabsize=0.95*($tabsize-$lefttabsize);
		} else {
		    $tabsize=~/(\d+\.?\d*)/;
		    $lefttabsize=$1/2.1;
		    $righttabsize=0.95*($1-$lefttabsize);
		}
	    }
	    if ($target ne 'tex') {
		if ($Apache::lonhomework::type ne 'exam') {
		    $question.="<br />\n".$optionlist.$text;
		} else {
		    $question.="<br />\n".$text;
		}
		if ($Apache::lonhomework::type eq 'exam') {
		    my @blank;
		    $question.=&Apache::optionresponse::webbubbles(\@used_letters,\@blank,$temp,$last_letter);
		}
	    } else {		
		# Note that if left or right positioned, we must
		# confine the bubbles to righttabsize:
		#
		if ($Apache::lonhomework::type eq 'exam') {
		    $question.=' '.$optionlist.$text."\n";
		    my @emptyItems = ();
		    for (my $i=0;$i<=$#used_letters;$i++) {push @emptyItems, ' ';}
		    $question.='\vskip -1 mm\noindent\begin{list}{}{\setlength{\listparindent}{0mm}\setlength{\leftmargin}{2mm}}'
			.'\item \hskip -3mm ';
                    if ($numrows == 1) {
                        $question .= '\textbf{'.$internal_counter.'}';
                    } else {
                        my $linetext;
                        for (my $i=0; $i<$numrows; $i++) {
                            $linetext .= $internal_counter+$i.', ';
                        }
                        $linetext =~ s/,\s$//;
                        $question .= '\small {\textbf{'.$linetext.'}} '.
                                     '\hskip 2 mm {\footnotesize '.
                                     &mt('(Bubble once in [_1] lines)',$numrows).
                                     '} \vskip 3 mm';
                    }
                    my $max_width;
		    if (&itemdisplay('left') || &itemdisplay('right')) {
                        $max_width = $righttabsize;
                    }
		    $question .= '\vskip -4 mm' . &Apache::optionresponse::bubbles(\@used_letters,\@emptyItems,'',$max_width,$numrows,$bubbles_per_row,$internal_counter);
		    $question .= '\end{list} \vskip -8 mm \strut ';
		    $internal_counter += $numrows;
	        } else {
                    if($env{'form.pdfFormFields'} eq 'yes' 
                            && $Apache::inputtags::status['-1'] eq 'CAN_ANSWER') {
                        $question .= " $optionlist ". &Apache::lonxml::print_pdf_end_combobox($text).'\strut';
                    } else {
                        $question.=' '.$optionlist.$text.'\strut\\\\\strut '."\n";
                    }
		}
            } 
	    $temp++;
	}
    }
    if ($result=&itemdisplay('top')) {
	$result.=$question;
    } elsif ($result=&itemdisplay('bottom')) {
	$result=$question.$result;
    } elsif ($result=&itemdisplay('right')) {
	if ($target ne 'tex') {
	    #remove the first <br />
	    $question=~s|<br />||;
	    $result='<table><tr><td valign="top">'.$question.
		'</td><td valign="top">'.$result.'</td></tr></table>';
	} else {
	    $lefttabsize.=' mm ';
	    $righttabsize.=' mm ';
	    $result='\setlength{\tabcolsep}{1 mm}\begin{tabular}{p{'.$righttabsize.'}p{'.$lefttabsize.'}}\begin{minipage}{'.$righttabsize.'}'.$question.'\end{minipage}&\begin{minipage}{'.$lefttabsize.'}'.$result.'\end{minipage}\end{tabular}';
	}
    } elsif ($result=&itemdisplay('left')) {
	if ($target ne 'tex') {
	    #remove the first <br />
	    $question=~s|<br />||;
	    $result='<table><tr><td valign="top">'.$result.
		'</td><td valign="top">'.$question.'</td></tr></table>';
	} else {
	    $lefttabsize.=' mm ';
	    $righttabsize.=' mm ';
	    $result='\setlength{\tabcolsep}{1 mm}\begin{tabular}{p{'.$lefttabsize.'}p{'.$righttabsize.'}}\begin{minipage}{'.$lefttabsize.'}'.$result.'\end{minipage}&\begin{minipage}{'.$righttabsize.'}'.$question.'\end{minipage}\end{tabular}';
	}
    }
    if ($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',
						   'submissionitems'],
                                                  $questiontype);
    }
    if ($target ne 'tex') {$result.="<br />";} else {$result.=' \\\\ ';}
    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 start_conceptgroup {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
    $Apache::matchresponse::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::matchresponse::conceptgroup=0;
    my $result='';
    if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
	$target eq 'tex' || $target eq 'analyze') {
	&Apache::response::pick_foil_for_concept($target,
						 ['value','text','location'],
						 \%Apache::hint::match,
						 $parstack,$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);
	my @names;
	if (ref($Apache::response::itemgroup{'names'}) eq 'ARRAY') {
            if (@{ $Apache::response::itemgroup{'names'} }) {
	        @names=@{ $Apache::response::itemgroup{'names'} };
            }
	}
	$result.= &Apache::edit::select_or_text_arg('Correct Option:','value',['unused',@names],$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' || $target eq 'analyze') {
	if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
	    $text='\vskip 5mm $\triangleright$ '.$text;
	}
	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
	if ($value ne 'unused') {
	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
	    &Apache::lonxml::debug("Got a name of :$name:");
	    if (!$name) {
		&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::matchresponse::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__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>