1: # The LearningOnline Network with CAPA
2: # mutliple choice style responses
3:
4: # 11/23,11/24,11/28 Gerd Kortemeyer
5:
6: package Apache::radiobuttonresponse;
7: use strict;
8:
9: sub BEGIN {
10: &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
11: }
12:
13: sub start_radiobuttonresponse {
14: my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
15: #when in a radiobutton response use these
16: &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil'));
17: my $id = &Apache::response::start_response($parstack,$safeeval);
18: return '';
19: }
20:
21: sub end_radiobuttonresponse {
22: &Apache::response::end_response;
23: return '';
24: }
25:
26: %Apache::response::foilgroup={};
27: sub start_foilgroup {
28: %Apache::response::foilgroup={};
29: }
30:
31: sub setrandomnumber {
32: my $rndseed=&Apache::lonnet::rndseed();
33: $rndseed=unpack("%32i",$rndseed);
34: $rndseed=$rndseed
35: +&Apache::lonnet::numval($Apache::inputtags::part)
36: +&Apache::lonnet::numval($Apache::inputtags::response['-1']);
37: srand($rndseed);
38: return '';
39: }
40:
41: #FIXME needs to stablely do random picks
42: sub end_foilgroup {
43: my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
44: my $name;
45: my $result;
46: &setrandomnumber();
47: my $rrargs ='';
48: if ( $#$parstack > 0 ) { $rrargs=$$parstack['-2']; }
49: my $max = &Apache::run::run("{$rrargs;".'return $max}',$safeeval);
50: my $answer = int(rand $max);
51: if ($target eq 'web') {
52: $result=&displayfoils($max,$answer);
53: } elsif ( $target eq 'grade') {
54: if ( defined $ENV{'form.submit'}) {
55: my $response = $ENV{'form.HWVAL'.$Apache::inputtags::response['-1']};
56: if ( $response =~ /[^\s]/) {
57: my $id = $Apache::inputtags::response['-1'];
58: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=$response;
59: &Apache::lonxml::debug("submitted a $response<br>\n");
60: if ($response == $answer) {
61: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='EXACT_ANS';
62: } else {
63: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='INCORRECT';
64: }
65: }
66: }
67: }
68: return $result;
69: }
70:
71: sub displayfoils {
72: my ($max,$answer)=@_;
73: my @names = @{ $Apache::response::foilgroup{'names'} };
74: my @truelist;
75: my @falselist;
76: my $result;
77: my $name;
78:
79: foreach $name (@names) {
80: #result.="<br><b>$name</b> is <i> $Apache::response::foilgroup{$name.'.value'} </i>";
81: if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
82: push (@truelist,$name);
83: } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
84: push (@falselist,$name);
85: } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
86: } else {
87: &Apache::lonxml::error("Unknown state $Apache::response::foilgroup{$name.'.value'} for $name in <foilgroup>");
88: }
89: }
90: my $whichtrue = rand $#truelist;
91: &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
92: my @whichfalse =();
93: while ((($#whichfalse+2) < $max) && ($#falselist > -1)) {
94: my $afalse=rand $#falselist;
95: &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
96: $afalse=splice(@falselist,$afalse,1);
97: &Apache::lonxml::debug("Picked $afalse");
98: push (@whichfalse,$afalse);
99: }
100: splice(@whichfalse,$answer,0,$truelist[$whichtrue]);
101: my $temp=0;
102: &Apache::lonxml::debug("the true statement is $answer");
103: foreach $name (@whichfalse) {
104: $result.="<br /><input type=\"radio\" name=\"HWVAL$Apache::inputtags::response['-1']\" value=\"$temp\">".$Apache::response::foilgroup{$name.'.text'}."</input>\n";
105: $temp++;
106: }
107: return $result."<br />";
108: }
109:
110: sub start_foil {
111: $Apache::lonxml::redirection--;
112: return '';
113: }
114:
115: sub end_foil {
116: my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
117: if ($target eq 'web' || $target eq 'grade') {
118: my $args ='';
119: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
120: my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);
121: push @{ $Apache::response::foilgroup{'names'} }, $name;
122: my $value = &Apache::run::run("{$args;".'return $value}',$safeeval);
123: $Apache::response::foilgroup{"$name.value"} = $value;
124: $Apache::response::foilgroup{"$name.text"} = $Apache::lonxml::outputstack;
125: }
126:
127: $Apache::lonxml::redirection++;
128: if ($Apache::lonxml::redirection == 1) {
129: $Apache::lonxml::outputstack='';
130: }
131: return '';
132: }
133:
134: 1;
135: __END__
136:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>