1: # The LearningOnline Network with CAPA
2: # implements the tags that control the hints
3: #
4: # $Id: hint.pm,v 1.26 2002/02/20 22:20:23 albertel 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:
29: package Apache::hinttags;
30:
31: use strict;
32: use Apache::lonnet;
33: use capa;
34:
35: BEGIN {
36: &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint'));
37: }
38:
39:
40: @Apache::hint::which=();
41: sub start_hintgroup {
42: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
43: my $skiptoend='0';
44: my $result;
45:
46: if ($target eq 'web') {
47: my $id=$Apache::inputtags::part;
48: my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
49: if ( $numtries eq '') { $numtries = 0; }
50: my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
51: if ( $hinttries eq '') { $hinttries = 1; }
52: &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
53: if ( $numtries < $hinttries ) {
54: $skiptoend='1';
55: } else {
56: if ($target eq 'web') {$result='<table bgcolor="#dddddd"><tr><td>';}
57: }
58: if ($skiptoend) {
59: &Apache::lonxml::get_all_text("/hintgroup",$$parser[$#$parser]);
60: }
61: } elsif ($target eq 'tex') {
62: $result .= '\noindent{\it Hint: }';
63: }
64: @Apache::hint::which=();
65: return $result;
66: }
67:
68: sub end_hintgroup {
69: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
70: my $result;
71:
72: if ($target eq 'web') {
73: my $id=$Apache::inputtags::part;
74: my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
75: if ( $numtries eq '') { $numtries = 0; }
76: my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
77: if ( $hinttries eq '') { $hinttries = 1; }
78: &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
79: if ( $numtries >= $hinttries ) {
80: $result='</td></tr></table>';
81: }
82: } elsif ($target eq 'edit') {
83: $result.=&Apache::edit::end_table();
84: }
85: @Apache::hint::which=();
86: return $result;
87: }
88:
89: sub start_numericalhint {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
91: #do everything in end, so intervening <responseparams> work
92: &Apache::response::start_hintresponse($parstack,$safeeval);
93: my $result;
94: if ($target eq 'edit') {
95: $result.=&Apache::edit::tag_start($target,$token);
96: $result.=&Apache::edit::text_arg('Name:','name',$token);
97: $result.=&Apache::edit::text_arg('Answer:','answer',$token);
98: $result.=&Apache::edit::text_arg('Unit:','unit',$token,5);
99: $result.=&Apache::edit::text_arg('Format:','format',$token,4);
100: $result.=&Apache::edit::end_row();
101: $result.=&Apache::edit::start_spanning_row();
102: } elsif ($target eq 'modified') {
103: my $constructtag=
104: &Apache::edit::get_new_args($token,$parstack,$safeeval,
105: 'name','answer','unit', 'format');
106: if ($constructtag) {
107: $result = &Apache::edit::rebuild_tag($token);
108: $result .= &Apache::edit::handle_insert();
109: }
110: }
111: return $result;
112: }
113:
114: sub end_numericalhint {
115: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
116: my $result;
117: if ($target eq 'web') {
118: $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
119: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
120: &Apache::response::setup_params('numericalhint');
121: my $partid=$Apache::inputtags::part;
122: my $id=$Apache::inputtags::response['-1'];
123: #id submissions occured under
124: my $submitid=$Apache::inputtags::response['-2'];
125: my $response = $Apache::lonhomework::history{
126: "resource.$partid.$submitid.submission"};
127: &Apache::lonxml::debug("hintgroup is using $response<br />\n");
128: #build safe space expression
129: my $expression="&caparesponse_check_list('".$response."','".
130: $$parstack[$#$parstack];
131: #need to get all possible parms
132: foreach my $key (keys(%Apache::inputtags::params)) {
133: $expression.= ';my $'. #'
134: $key.'="'.$Apache::inputtags::params{$key}.'"';
135: }
136: $expression.="');";
137: $result = &Apache::run::run($expression,$safeeval);
138: &Apache::lonxml::debug("$expression:result:$result:$Apache::lonxml::curdepth");
139: my ($awards) = split /:/ , $result;
140: my ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);
141: if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { push (@Apache::hint::which,$name); }
142: $result='';
143: } elsif ($target eq 'meta') {
144: $result=&Apache::response::meta_package_write('numericalhint');
145: } elsif ($target eq 'edit') {
146: $result.='</td></tr>'.&Apache::edit::end_table;
147: }
148: &Apache::response::end_hintresponse();
149: return $result;
150: }
151:
152: # a part shows if it is on, if no specific parts are on, then default shows
153: sub start_hintpart {
154: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
155:
156: my $show ='0';
157: my $result = '';
158: if ($target eq 'web') {
159: my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
160: &Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
161: if ( $on eq 'default' && $#Apache::hint::which == '-1') {
162: $show=1;
163: } else {
164: my $which;
165: foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
166: }
167: if (!$show) {
168: &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);
169: }
170: } elsif ($target eq 'grade') {
171: &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);
172: } elsif ($target eq 'edit') {
173: $result.= &Apache::edit::tag_start($target,$token);
174: $result.= &Apache::edit::text_arg('On:','on',$token);
175: $result.= &Apache::edit::end_row();
176: $result.= &Apache::edit::start_spanning_row();
177: } elsif ($target eq 'modified') {
178: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
179: 'on');
180: if ($constructtag) {
181: $result = &Apache::edit::rebuild_tag($token);
182: $result.=&Apache::edit::handle_insert();
183: }
184: }
185: return $result;
186: }
187:
188: sub end_hintpart {
189: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
190: my $result;
191: if ($target eq 'edit') { $result.=&Apache::edit::end_table; }
192: return $result;
193: }
194:
195: 1;
196: __END__
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