Annotation of loncom/homework/lonhomework.pm, revision 1.38
1.1 albertel 1: # The LON-CAPA Homework handler
2: # Guy Albertelli
1.17 www 3: # 11/30 Gerd Kortemeyer
1.25 www 4: # 6/1 Gerd Kortemeyer
1.1 albertel 5:
6: package Apache::lonhomework;
7: use strict;
8: use Apache::style;
9: use Apache::lonxml;
1.2 albertel 10: use Apache::lonnet;
11: use Apache::inputtags;
12: use Apache::structuretags;
1.9 albertel 13: use Apache::response;
1.22 albertel 14: use Apache::hint;
1.31 albertel 15: use Apache::outputtags;
1.26 www 16: use Apache::Constants qw(:common);
1.16 albertel 17:
1.5 albertel 18: sub get_target {
1.15 albertel 19: if ( $ENV{'request.state'} eq "published") {
1.34 albertel 20: if ( defined $ENV{'form.submitted'}) {
1.18 albertel 21: return ('grade', 'web');
22: } else {
23: return ('web');
24: }
1.15 albertel 25: } elsif ($ENV{'request.state'} eq "construct") {
1.16 albertel 26: if ( defined $ENV{'form.preview'}) {
1.34 albertel 27: if ( defined $ENV{'form.submitted'}) {
1.18 albertel 28: return ('grade', 'web');
29: } else {
30: return ('web');
31: }
1.15 albertel 32: } else {
1.29 albertel 33: #return ('edit');
34: #edit is currently broken
35: return ('web');
1.15 albertel 36: }
37: }
1.18 albertel 38: return ();
1.5 albertel 39: }
40:
1.3 albertel 41: sub setup_vars {
1.5 albertel 42: my ($target) = @_;
1.11 albertel 43: return ';'
44: # return ';$external::target='.$target.';';
1.2 albertel 45: }
46:
47: sub send_header {
48: my ($request)= @_;
1.14 albertel 49: $request->print(&Apache::lontexconvert::header());
1.16 albertel 50: $ENV{'request.uri'}=$request->uri;
51: # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2 albertel 52: }
53:
1.36 albertel 54: sub createmenu {
55: my ($which,$request)=@_;
56: if ($which eq 'grade') {
57: $request->print('<script language="JavaScript">
1.38 ! albertel 58: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.36 albertel 59: "height=350,width=150,menubar=no");
60: </script>');
61: }
62: }
63:
1.2 albertel 64: sub send_footer {
65: my ($request)= @_;
1.16 albertel 66: # $request->print('</form>');
1.14 albertel 67: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 68: }
69:
1.36 albertel 70: $Apache::lonxml::browse='';
1.20 albertel 71: sub check_date {
1.21 albertel 72: my ($id) = @_;
1.20 albertel 73: my $date ='';
1.21 albertel 74: my $status = '';
75: my $datemsg = '';
76: my $lastdate = '';
77: my $temp;
78: my $type;
79: my $passed;
80: &Apache::lonxml::debug("checking for part :$id:");
81: foreach $temp ("opendate","duedate","answerdate") {
82: $lastdate = $date;
83: $date = &Apache::lonnet::EXT("resource.$id.$temp");
84: &Apache::lonxml::debug("found :$date: for :$temp:");
85: if ($date eq '') {
86: $date = "an unknown date"; $passed = 0;
1.30 albertel 87: } elsif ($date eq 'con_lost') {
88: $date = "an indeterminate date"; $passed = 0;
1.21 albertel 89: } else {
90: if (time < $date) { $passed = 0; } else { $passed = 1; }
91: $date = localtime $date;
92: }
93: if (!$passed) { $type=$temp; last; }
1.20 albertel 94: }
1.21 albertel 95: &Apache::lonxml::debug("have :$type:$passed:");
96: if ($passed) {
97: $status='SHOW_ANSWER';
98: $datemsg=$date;
99: } elsif ($type eq 'opendate') {
100: $status='CLOSED';
101: $datemsg = "will open on $date";
102: } elsif ($type eq 'duedate') {
103: $status='CAN_ANSWER';
104: $datemsg = "is due at $date";
105: } elsif ($type eq 'answerdate') {
106: $status='CLOSED';
1.32 albertel 107: $datemsg = "was due on $lastdate, and answers will be available on $date";
1.20 albertel 108: }
1.27 albertel 109: if ($status eq 'CAN_ANSWER') {
110: #check #tries
111: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
112: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
113: if ( $tries eq '' ) { $tries = '0'; }
114: if ( $maxtries eq '' ) { $maxtries = '2'; }
115: if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
116: }
1.21 albertel 117: &Apache::lonxml::debug("sending back :$status:$datemsg:");
1.36 albertel 118: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
119: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
120: $status='CAN_ANSWER';
121: $datemsg='is closed but you are allowed to view it';
122: }
1.24 albertel 123: if ($ENV{'request.state'} eq "construct") {
124: &Apache::lonxml::debug("in construction ignoring dates");
125: $status='CAN_ANSWER';
126: $datemsg='is in under construction';
127: }
1.21 albertel 128: return ($status,$datemsg);
1.20 albertel 129: }
130:
1.17 www 131: sub handler {
1.18 albertel 132: my $request=$_[0];
1.37 albertel 133:
134: if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}
1.18 albertel 135:
136: my (@targets) = &get_target();
137:
1.17 www 138: if ($ENV{'browser.mathml'}) {
139: $request->content_type('text/xml');
140: } else {
141: $request->content_type('text/html');
142: }
143: $request->send_http_header;
1.25 www 144: return OK if $request->header_only;
1.35 albertel 145:
1.36 albertel 146: #setup permissions
1.37 albertel 147: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
148: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
1.36 albertel 149: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
150:
1.35 albertel 151: #check if we know where we are
152: if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1.36 albertel 153: # if we are browsing we might not be able to know where we are
154: if ($Apache::lonhomework::browse ne 'F') {
155: #should know where we are, so ask
156: $request->internal_redirect('/adm/ambiguous'); return;
157: }
1.35 albertel 158: }
159:
1.17 www 160: &Apache::lonhomework::send_header($request);
1.18 albertel 161:
162: foreach my $target (@targets) {
163: my $file=&Apache::lonnet::filelocation("",$request->uri);
164: my $problem=&Apache::lonnet::getfile($file);
165: if ($problem == -1) {
166: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
167: $problem='';
168: }
169:
170: my %mystyle;
171: my $result = '';
172: &Apache::inputtags::initialize_inputtags;
173: %Apache::lonhomework::results=();
174: %Apache::lonhomework::history=&Apache::lonnet::restore;
175: #ignore error conditions
176: my ($temp)=keys %Apache::lonhomework::history ;
177: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.36 albertel 178: if ($target eq 'web') {
179: if (&Apache::lonnet::symbread() eq '') {
180: if ($ENV{'request.state'} eq "construct") {
181: $request->print("In construction space, submissions ignored<br>");
182: } else {
183: $request->print("Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored<br>");
184: }
185: }
186: if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }
1.20 albertel 187: }
1.18 albertel 188: if ($target eq 'grade') {
189: my $resultkey;
190: foreach $resultkey (sort keys %Apache::lonhomework::history) {
191: &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
192: }
193: &Apache::lonxml::debug("\n<br>restored values^</br>\n");
194: }
195: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
196: if ($default == -1) {
197: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
198: $default='';
199: }
200: $result = &Apache::lonxml::xmlparse($target, $problem,
201: $default.&setup_vars($target),%mystyle);
1.17 www 202:
1.18 albertel 203: #$request->print("Result follows:");
204: $request->print($result);
205: #$request->print(":Result ends");
206: if ($target eq 'grade') {
1.27 albertel 207:
1.18 albertel 208: my $resultkey;
209: foreach $resultkey (sort keys %Apache::lonhomework::results) {
210: &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
211: }
212: &Apache::lonxml::debug("\n<br>storing values^</br>\n");
213: }
214:
215: my ($temp) = keys %Apache::lonhomework::results;
216: if ( $temp ne '' ) {
217: &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
218: }
1.17 www 219: }
220: &Apache::lonhomework::send_footer($request);
1.18 albertel 221:
1.25 www 222: return OK;
1.17 www 223:
1.1 albertel 224: }
225:
226: 1;
227: __END__
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