1: # The LearningOnline Network with CAPA
2: # essay (ungraded) style responses
3: #
4: # $Id: essayresponse.pm,v 1.13 2002/08/01 15:20:34 ng Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # 4/3 Guy
29: # July, 2002, H. K. Ng
30: #
31: package Apache::essayresponse;
32: use strict;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::essayresponse',('essayresponse'));
36: }
37:
38: sub start_essayresponse {
39: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
40: my $result;
41:
42: if ($target eq 'web') {
43: my $part= $Apache::inputtags::part;
44: my $id = &Apache::response::start_response($parstack,$safeeval);
45:
46: my $ncol= &Apache::lonnet::EXT("resource.$part".'_'."$id.maxcollaborators");
47: my $coll= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"});
48: $result='<br /><table border="1">';
49: if ($ncol > 0) {
50: $result .='<tr><td>'.
51: 'Collaborators: <input type="text" size="70" max="80" name="HWCOL'.
52: $part.'_'.$id.'" value="'.$coll.'" /><br />'.
53: '(Enter maximum '.$ncol.' collaborators using username or username@domain, e.g. '.
54: 'smithje or smithje@'.$ENV{'user.domain'}.'.)<br />';
55: $result .= &check_collaborators($ncol,$coll) if ($coll =~ /\w+/);
56: $result .='</td></tr>';
57: }
58: $result.='<tr><td>'.
59: '<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="yes" checked>'.
60: ' Submit text below as answer to receive credit <br />'.
61: '<input type="radio" name="HWDRAFT'.$part.'_'.$id.'" value="no">'.
62: ' Save text below as a draft answer (not submitting it for credit yet) '.
63: '</td></tr></table>';
64: }
65: return $result;
66: }
67:
68: sub end_essayresponse {
69: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
70: my $part = $Apache::inputtags::part;
71: my $id = &Apache::response::start_response($parstack,$safeeval);
72: my $collaborators = $ENV{'form.HWCOL'.$part.'_'.$id};
73: if ($collaborators =~ /[^\s]/) {
74: my $previous_list= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.collaborators"});
75:
76: $Apache::lonhomework::results{"resource.$part.$id.collaborators"}=$collaborators
77: if ($collaborators ne $previous_list);
78: }
79: if ( $target eq 'grade' ) {
80: if ( defined $ENV{'form.submitted'}) {
81: my $response = $ENV{'form.HWVAL'.$id};
82: if ( $response =~ /[^\s]/) {
83: $Apache::lonhomework::results{"resource.$part.$id.submission"}=$response;
84: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
85: $ENV{'form.HWDRAFT'.$part.'_'.$id} eq 'yes' ? 'SUBMITTED' : 'DRAFT';
86: my %previous=&Apache::response::check_for_previous($response,$part,$id);
87: &Apache::response::handle_previous(\%previous,'SUBMITTED');
88: }
89: }
90: }
91:
92: &Apache::response::end_response;
93: return '';
94: }
95:
96: sub check_collaborators {
97: my ($ncol,$coll) = @_;
98: my %classlist=&Apache::lonnet::dump('classlist',
99: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
100: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
101: my (@badcollaborators,$result);
102: my (@collaborators) = split(/\,?\s+/,$coll);
103: foreach (@collaborators) {
104: my $collaborator = $_;
105: if (/@/) {
106: $collaborator =~ s/@/:/;
107: } else {
108: $collaborator = $_.':'.$ENV{'user.domain'};
109: }
110: push @badcollaborators, $_ if (!grep /^$collaborator/i,keys %classlist);
111: }
112:
113: if (scalar(@badcollaborators)) {
114: $result = '<table border="0"><tr bgcolor="#ffbbbb"><td> The following user'.
115: (scalar(@badcollaborators) > 1 ? 's are' : ' is').' invalid: '.
116: join(', ',@badcollaborators).'. Please correct.</td></tr></table>';
117: }
118: my $toomany = scalar(@collaborators) - $ncol;
119: if ($toomany > 0) {
120: $result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>'.
121: 'You have too many collaborators. Please remove '.$toomany.' collaborator'.
122: ($toomany > 1 ? 's' :'').'.</td></tr></table>';
123: }
124: return $result;
125: }
126:
127: 1;
128: __END__
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