Annotation of loncom/homework/structuretags.pm, revision 1.41
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.33 albertel 3: # 2/19 Guy
1.1 albertel 4: package Apache::structuretags;
5:
6: use strict;
7: use Apache::lonnet;
8:
9: sub BEGIN {
1.34 albertel 10: &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
1.37 albertel 11: # &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
1.10 albertel 12: }
13:
14: sub start_web {
1.40 albertel 15: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10 albertel 16: my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
1.19 albertel 17: if ($target eq 'web') {
18: return $bodytext;
19: }
20: return '';
1.10 albertel 21: }
22:
23: sub end_web {
24: }
25:
26: sub start_tex {
1.40 albertel 27: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10 albertel 28: my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
1.19 albertel 29: if ($target eq 'tex') {
30: return $bodytext
31: }
1.10 albertel 32: return '';
33: }
34:
35: sub end_tex {
1.9 albertel 36: }
37:
38: sub start_problem {
1.40 albertel 39: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 40:
41: #intialize globals
42: $Apache::inputtags::part='0';
43: @Apache::inputtags::responselist = ();
44:
45: #adeed vars to the scripting enviroment
46: my $expression='$external::part='.$Apache::inputtags::part.';';
47: &Apache::run::run($expression,$safeeval);
1.22 albertel 48: my $status;
49: my $datemsg;
1.36 albertel 50:
1.41 ! albertel 51: #should get back a <html> or the neccesary stuff to start XML/MathML
1.40 albertel 52: my $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.36 albertel 53:
1.41 ! albertel 54: my $head_tag_start='<head>'.&Apache::lonxml::registerurl();
! 55: my $body_tag_start='<body onLoad="'.&Apache::lonxml::loadevents().'" '.
! 56: 'onUnload="'.&Apache::lonxml::unloadevents().'" '.
! 57: 'bgcolor="#FFFFFF">';
1.34 albertel 58: if ($target eq 'web' || $target eq 'grade') {
1.22 albertel 59: ($status,$datemsg) = &Apache::lonhomework::check_date('0');
60: push (@Apache::inputtags::status,$status);
1.24 albertel 61: my $expression='$external::datestatus="'.$status.'";';
62: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
63: &Apache::run::run($expression,$safeeval);
1.22 albertel 64: if ( $status eq 'CLOSED' ) {
1.21 albertel 65: my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
66: if ( $target eq "web" ) {
1.41 ! albertel 67: $result.= $head_tag_start.'</head>';
! 68: return $result . $body_tag_start .
! 69: " <br />Problem is not open to be viewed. The problem $datemsg<br />";
1.21 albertel 70: }
1.41 ! albertel 71: }
1.21 albertel 72: }
1.19 albertel 73: if ($target eq 'web') {
1.39 albertel 74: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.30 albertel 75: if ($name eq '') {
76: $name=&Apache::lonnet::EXT('resource.title');
77: if ($name eq 'con_lost') { $name = ''; }
78: }
79: $Apache::lonhomework::name=$name;
1.22 albertel 80: if ($status eq 'CAN_ANSWER') {
81: # create a page header and exit
1.41 ! albertel 82: $result.="$head_tag_start<title>$name</title></head>\n
! 83: $body_tag_start\n
1.36 albertel 84: <form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">".
85: '<input type="hidden" name="submitted" value="yes" />';
86: if ($ENV{'request.state'} eq "construct") {
87: $result.='<input type="hidden" name="problemmode" value="View" />
88: <input type="submit" name="problemmode" value="Edit" /><hr />';
89: }
90: return $result;
1.29 albertel 91: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' || $status eq 'CLOSED') {
1.41 ! albertel 92: return $result.$head_tag_start."<title>$name</title></head>\n$body_tag_start\n";
1.22 albertel 93: }
94: }
1.34 albertel 95: if ($target eq 'edit') {
1.41 ! albertel 96: $result.=$head_tag_start."</head>".$body_tag_start.
! 97: '<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'">
! 98: <input type="hidden" name="submitted" value="edit" />
! 99: <input type="hidden" name="problemmode" value="Edit" />
! 100: <input type="submit" name="problemmode" value="View" />
! 101: <input type="submit" name="Undo" value="undo" /> <hr />
! 102: ';
1.39 albertel 103: my $temp=&Apache::edit::insertlist($target,$token);
1.36 albertel 104: $result.=$temp;
105: return $result;
1.34 albertel 106: }
1.37 albertel 107: if ($target eq 'modified') {
108: $result=$token->[4];
109: $result.=&Apache::edit::handle_insert();
110: return $result;
111: }
1.19 albertel 112: return '';
1.9 albertel 113: }
114:
115: sub end_problem {
1.40 albertel 116: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.16 albertel 117: my $result='';
1.24 albertel 118: my $status=$Apache::inputtags::status['-1'];
1.40 albertel 119: if ($target eq 'grade' || $target eq 'web' ) {
1.28 albertel 120: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
121: $status eq 'CAN_ANSWER') {
1.19 albertel 122: # if part is zero, no <part>s existed, so we need to the grading
123: &Apache::inputtags::grade;
124: } elsif ($Apache::inputtags::part eq '0') {
125: # if part is zero, no <part>s existed, so we need show the current
126: # grading status
1.20 albertel 127: $result.= &Apache::inputtags::gradestatus($Apache::inputtags::part);
1.41 ! albertel 128: }
1.22 albertel 129: if ($target eq 'web') {
130: if ($status eq 'CAN_ANSWER') {
131: $result.="</form></body>\n";
1.28 albertel 132: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.41 ! albertel 133: $result.="</body>\n";
! 134: }
1.22 albertel 135: }
1.41 ! albertel 136: }
1.34 albertel 137: if ($target eq 'meta') {
1.18 albertel 138: if ($Apache::inputtags::part eq '0') {
1.16 albertel 139: $result=&Apache::response::mandatory_part_meta;
140: }
141: }
1.34 albertel 142: if ($target eq 'edit') {
143: &Apache::lonxml::debug("in end_problem with $target, edit");
144: $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
145: }
1.16 albertel 146: return $result;
1.1 albertel 147: }
148:
149: sub start_block {
1.40 albertel 150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.1 albertel 151:
1.38 albertel 152: if ($target eq 'web' || $target eq 'grade') {
153: my $code = @$parstack[$#$parstack];
154: $code =~ s/\"//g;
155: $code .=';return $condition;';
156: # print "<br />$code<br />";
157: my $result = &Apache::run::run($code,$safeeval);
158: &Apache::lonxml::debug("block :$code: returned :$result:");
159: if ( ! $result ) {
160: my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]);
161: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[$#$parser]");
162: }
1.1 albertel 163: }
164: return "";
165: }
166:
167: sub end_block {
1.38 albertel 168: return '';
1.4 tsai 169: }
170:
171: sub start_while {
1.40 albertel 172: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.4 tsai 173:
174: my $code = @$parstack[$#$parstack];
175: $code =~ s/\"//g;
176: $code .=';return $condition;';
177:
1.5 tsai 178: push( @Apache::structuretags::whileconds, $code);
1.4 tsai 179: my $result = &Apache::run::run($code,$safeeval);
180: my $bodytext=$$parser[$#$parser]->get_text("/while");
1.5 tsai 181: push( @Apache::structuretags::whilebody, $bodytext);
182: if ( $result ) {
1.8 albertel 183: &Apache::lonxml::newparser($parser,\$bodytext);
1.4 tsai 184: }
185: return "";
186: }
187:
188: sub end_while {
1.40 albertel 189: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.5 tsai 190: my $code = pop @Apache::structuretags::whileconds;
191: my $bodytext = pop @Apache::structuretags::whilebody;
192: my $result = &Apache::run::run($code,$safeeval);
193: if ( $result ) {
1.8 albertel 194: &Apache::lonxml::newparser($parser,\$bodytext);
1.5 tsai 195: }
196: return "";
1.1 albertel 197: }
1.6 tsai 198:
199: # <randomlist>
200: # <tag1>..</tag1>
201: # <tag2>..</tag2>
202: # <tag3>..</tag3>
203: # ...
204: # </randomlist>
205: sub start_randomlist {
1.40 albertel 206: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.9 albertel 207: my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);
1.6 tsai 208: my $b_parser= HTML::TokeParser->new(\$body);
209: my $b_tok;
210: my @randomlist;
211: my $list_item;
212:
213: while($b_tok = $b_parser->get_token() ) {
214: if($b_tok->[0] eq 'S') { # start tag
215: # get content of the tag until matching end tag
216: # get all text upto the matching tag
217: # and push the content into @randomlist
1.9 albertel 218: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
1.7 tsai 219: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1.6 tsai 220: push(@randomlist,$list_item);
1.32 albertel 221: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>";
1.6 tsai 222: }
223: if($b_tok->[0] eq 'T') { # text
224: # what to do with text in between tags?
1.32 albertel 225: # print "<b>TEXT $b_tok->[1]</b><br />";
1.6 tsai 226: }
227: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1.32 albertel 228: # print "<b>END-TAG $b_tok->[1]</b><br />";
1.6 tsai 229: # }
230: }
1.7 tsai 231: my @idx_arr = (0 .. $#randomlist);
232: &Apache::structuretags::shuffle(\@idx_arr);
233: my $bodytext = '';
234: for(0 .. $#randomlist) {
235: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
236: }
1.8 albertel 237:
238: &Apache::lonxml::newparser($parser,\$bodytext);
1.6 tsai 239: return "";
1.7 tsai 240: }
241:
242: sub shuffle {
243: my $a=shift;
244: my $i;
245: for($i=@$a;--$i;) {
246: my $j=int rand($i+1);
247: next if $i == $j;
248: @$a[$i,$j] = @$a[$j,$i];
249: }
1.6 tsai 250: }
251:
252: sub end_randomlist {
253: }
254:
1.11 albertel 255: sub start_part {
1.40 albertel 256: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.39 albertel 257: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.14 albertel 258: $Apache::inputtags::part=$id;
1.18 albertel 259: @Apache::inputtags::responselist = ();
1.15 www 260: if ($target eq 'meta') {
1.16 albertel 261: return &Apache::response::mandatory_part_meta;
1.37 albertel 262: } elsif ($target eq 'web' || $target eq 'grade') {
1.23 albertel 263: my ($status,$datemsg) = &Apache::lonhomework::check_date("OPEN_DATE",$id);
264: push (@Apache::inputtags::status,$status);
265: my $expression='$external::datestatus="'.$status.'";';
266: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
267: &Apache::run::run($expression,$safeeval);
268: if ( $status eq 'CLOSED' ) {
1.21 albertel 269: my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]);
270: if ( $target eq "web" ) {
1.32 albertel 271: return "<br />Part is not open to be viewed. It $datemsg<br />";
1.21 albertel 272: }
273: }
1.15 www 274: }
1.19 albertel 275: return '';
1.11 albertel 276: }
277:
278: sub end_part {
1.40 albertel 279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.18 albertel 280: &Apache::lonxml::debug("in end_part $target ");
1.28 albertel 281: my $status=$Apache::inputtags::status['-1'];
1.23 albertel 282: pop @Apache::inputtags::status;
1.19 albertel 283: if ( $target eq 'meta' ) { return ''; }
1.37 albertel 284: if ( $target eq 'grade' && $status eq 'CAN_ANSWER') {
285: return &Apache::inputtags::grade;
1.28 albertel 286: }
1.37 albertel 287: if ($target eq 'web') {
288: return &Apache::inputtags::gradestatus($Apache::inputtags::part);
289: }
290: return '';
1.11 albertel 291: }
1.1 albertel 292:
1.25 albertel 293: sub start_preduedate {
1.40 albertel 294: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 295: if ($target eq 'web' || $target eq 'grade') {
1.29 albertel 296: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
297: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' ) {
1.26 albertel 298: &Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]);
1.24 albertel 299: }
300: }
301: return '';
302: }
303:
1.25 albertel 304: sub end_preduedate {
1.24 albertel 305: return '';
306: }
307:
1.25 albertel 308: sub start_postanswerdate {
1.40 albertel 309: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 310: if ($target eq 'web' || $target eq 'grade') {
1.24 albertel 311: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.26 albertel 312: &Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]);
1.24 albertel 313: }
314: }
315: return '';
316: }
317:
1.25 albertel 318: sub end_postanswerdate {
1.24 albertel 319: return '';
320: }
321:
1.25 albertel 322: sub start_notsolved {
1.40 albertel 323: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 324: if ($target eq 'web' || $target eq 'grade') {
1.24 albertel 325: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
326: &Apache::lonxml::debug("not solved has :$gradestatus:");
327: if ($gradestatus =~ /^correct/) {
328: &Apache::lonxml::debug("skipping");
1.26 albertel 329: &Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]);
1.24 albertel 330: }
331: }
332: return '';
333: }
334:
1.25 albertel 335: sub end_notsolved {
1.24 albertel 336: return '';
337: }
338:
339: sub start_solved {
1.40 albertel 340: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 341: if ($target eq 'web' || $target eq 'grade') {
1.24 albertel 342: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
343: if ($gradestatus !~ /^correct/) {
344: &Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]);
345: }
346: }
347: return '';
348: }
349:
350: sub end_solved {
351: return '';
352: }
1.34 albertel 353:
354: sub start_startouttext {
1.40 albertel 355: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 356: my @result=(''.'');
357: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
358: return (@result);
1.34 albertel 359: }
360: sub end_startouttext {
1.40 albertel 361: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 362: my $result='';
1.35 albertel 363: my $text='';
364:
1.34 albertel 365: if ($target eq 'edit') {
1.35 albertel 366: $text=&Apache::lonxml::get_all_text("endouttext",$$parser[$#$parser]);
367: $result=
1.37 albertel 368: &Apache::edit::tag_start($target,$token).
369: &Apache::edit::editfield($token->[1],$text,"Text Block",50,5);
1.35 albertel 370: }
371: if ($target eq 'modified') {
372: $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
373: $result='<startouttext />'.&Apache::edit::modifiedfield();
1.34 albertel 374: }
375: return $result;
376: }
377: sub start_endouttext {
1.40 albertel 378: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 379: my $result='';
1.37 albertel 380: if ($target eq "edit" ) { $result=&Apache::edit::tag_end($target,$token); }
1.35 albertel 381: if ($target eq "modified") { $result='<endouttext />'; }
1.34 albertel 382: return $result;
383: }
384: sub end_endouttext {
1.40 albertel 385: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 386: my @result=('','');
387: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
388: return (@result);
1.34 albertel 389: }
390:
391:
1.1 albertel 392: 1;
393: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to structuretags.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework