# The LearningOnline Network with CAPA
# essay (ungraded) style responses
#
# $Id: essayresponse.pm,v 1.11 2002/07/25 20:51:39 ng 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/
#
# 4/3 Guy
# July, 2002, H. K. Ng
#
package Apache::essayresponse;
use strict;
BEGIN {
&Apache::lonxml::register('Apache::essayresponse',('essayresponse'));
}
sub start_essayresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web') {
my $part= $Apache::inputtags::part;
my $id = &Apache::response::start_response($parstack,$safeeval);
my $ncol= &Apache::lonnet::EXT("resource.$part".'_'."$id.maxcollaborators");
my $coll= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"});
if ($ncol > 0) {
$result .='<br />Collaborators: <input type="text" size="70" max="80" name="HWCOL'.
$id.'" value="'.$coll.'" /><br />'.
'(Enter maximum '.$ncol.' collaborators using username or username@domain, e.g. '.
'smithje or smithje@'.$ENV{'user.domain'}.'.)<br />';
$result .= &check_collaborators($ncol,$coll) if ($coll =~ /\w+/);
}
}
return $result;
}
sub end_essayresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $part=$Apache::inputtags::part;
my $id = &Apache::response::start_response($parstack,$safeeval);
my $collaborators = $ENV{'form.HWCOL'.$id};
if ($collaborators =~ /[^\s]/) {
$Apache::lonhomework::results{"resource.$part.$id.collaborators"}=$collaborators;
}
if ( $target eq 'grade' ) {
if ( defined $ENV{'form.submitted'}) {
my $response = $ENV{'form.HWVAL'.$id};
if ( $response =~ /[^\s]/) {
$Apache::lonhomework::results{"resource.$part.$id.submission"}=$response;
$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}="SUBMITTED";
my %previous=&Apache::response::check_for_previous($response,$part,$id);
&Apache::response::handle_previous(\%previous,'SUBMITTED');
}
}
}
&Apache::response::end_response;
return '';
}
sub check_collaborators {
my ($ncol,$coll) = @_;
my %classlist=&Apache::lonnet::dump('classlist',
$ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
$ENV{'course.'.$ENV{'request.course.id'}.'.num'});
my (@badcollaborators,$result);
my (@collaborators) = split(/\,?\s+/,$coll);
foreach (@collaborators) {
my $collaborator = $_;
if (/@/) {
$collaborator =~ s/@/:/;
} else {
$collaborator = $_.':'.$ENV{'user.domain'};
}
push @badcollaborators, $_ if (!grep /^$collaborator/i,keys %classlist);
}
if (scalar(@badcollaborators)) {
$result = '<table border="0"><tr bgcolor="#ffbbbb"><td> The following user'.
(scalar(@badcollaborators) > 1 ? 's are' : ' is').' invalid: '.
join(', ',@badcollaborators).'. Please correct.</td></tr></table>';
}
my $toomany = scalar(@collaborators) - $ncol;
if ($toomany > 0) {
$result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>'.
'You have too many collaborators. Please remove '.$toomany.' collaborator'.
($toomany > 1 ? 's' :'').'.</td></tr></table>';
}
return $result;
}
1;
__END__
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