Annotation of loncom/homework/structuretags.pm, revision 1.136
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.136 ! albertel 4: # $Id: structuretags.pm,v 1.135 2002/11/11 22:37:23 www Exp $
1.74 albertel 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: #
1.33 albertel 28: # 2/19 Guy
1.44 ng 29: # 6/26/2001 fixed extra web display at end of <web></web> tags
1.60 www 30: # 8/17,8/18,8/20 Gerd Kortemeyer
1.54 www 31:
1.133 sakharuk 32:
1.1 albertel 33: package Apache::structuretags;
34:
35: use strict;
36: use Apache::lonnet;
1.101 sakharuk 37: use Apache::File();
1.1 albertel 38:
1.78 harris41 39: BEGIN {
1.48 albertel 40: &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
1.37 albertel 41: # &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
1.10 albertel 42: }
43:
44: sub start_web {
1.40 albertel 45: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10 albertel 46: my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
1.19 albertel 47: if ($target eq 'web') {
48: return $bodytext;
49: }
50: return '';
1.10 albertel 51: }
52:
53: sub end_web {
1.44 ng 54: return '';
1.10 albertel 55: }
56:
57: sub start_tex {
1.40 albertel 58: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10 albertel 59: my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
1.19 albertel 60: if ($target eq 'tex') {
1.102 sakharuk 61: return $bodytext.' ';
1.19 albertel 62: }
1.10 albertel 63: return '';
64: }
65:
66: sub end_tex {
1.44 ng 67: return '';
1.9 albertel 68: }
69:
1.48 albertel 70: sub page_start {
71: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.79 albertel 72: my %found;
73: foreach my $taginside ($tagstack) {
74: foreach my $taglookedfor ('html','body','form') {
75: if ($taginside =~ /^$taglookedfor$/i) { $found{$taglookedfor} = 1; }
76: }
77: }
78:
79: my $result;
80: my $head_tag_start;
81: if (!defined($found{'html'})) {
82: $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,
83: $parser,$safeeval);
1.84 matthew 84: $head_tag_start='<head>'.&Apache::lonxml::registerurl(undef,$target);
1.79 albertel 85: }
86: my $body_tag_start;
87: if (!defined($found{'body'})) {
1.80 albertel 88: $body_tag_start='<body onLoad="'.&Apache::lonxml::loadevents().'" '.
1.79 albertel 89: 'onUnload="'.&Apache::lonxml::unloadevents().'" ';
90: my $background=&Apache::lonxml::get_param('background',$parstack,$safeeval);
91: if ($background) {
92: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
93: $background;
94: $body_tag_start.='background="'.$background.'" ';
1.50 albertel 95: } else {
1.79 albertel 96: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
97: if ($bgcolor) {
98: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
99: } else {
100: $body_tag_start.='bgcolor="#ffffff"';
101: }
1.50 albertel 102: }
1.79 albertel 103: $body_tag_start.='>';
1.134 albertel 104: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
105: my ($symb)=&Apache::lonxml::whichuser();
106: if ($symb eq '') {
107: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
108: $help="Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored $help<br />";
109: $body_tag_start.=$help;
110: }
111: }
1.50 albertel 112: }
1.105 albertel 113: my $form_tag_start;
114: if (!defined($found{'form'})) {
115: $form_tag_start='<form name="lonhomework" method="POST" action="'.
116: $ENV{'request.uri'}.'">';
117: }
118: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
119: }
120:
121: sub get_resource_name {
122: my ($parstack,$safeeval)=@_;
123: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
124: if ($name eq '') {
125: $name=&Apache::lonnet::EXT('resource.title');
126: if ($name eq 'con_lost') { $name = ''; }
127: }
128: $Apache::lonhomework::name=$name;
129: return $name;
130: }
131:
132: sub setup_rndseed {
133: my ($safeeval)=@_;
134: my $rndseed;
135: if ($ENV{'request.state'} eq "construct") {
136: $rndseed=$ENV{'form.rndseed'};
137: if (!$rndseed) {
138: $rndseed=time;
139: $ENV{'form.rndseed'}=$rndseed;
140: }
1.136 ! albertel 141: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.105 albertel 142: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
143: }
144: return $rndseed;
145: }
146:
147: sub problem_edit_header {
148: return '<input type="hidden" name="submitted" value="edit" />
149: <input type="hidden" name="problemmode" value="Edit" />
150: <input type="submit" name="problemmode" value="Discard Edits and View" />
151: <input type="submit" name="problemmode" value="EditXML" />
152: <input type="submit" name="Undo" value="undo" /> <hr />
1.135 www 153: <input type="submit" name="submit" value="Submit Changes and Edit" />
154: <input type="submit" name="submit" value="Submit Changes and View" /><br /><p> </p><table border="0"><tr><td bgcolor="#DDDDDD">
1.105 albertel 155: ';
156: }
157:
158: sub problem_edit_footer {
1.135 www 159: return '</td></tr></table><br /><input type="submit" name="submit" value="Submit Changes and Edit" />
1.105 albertel 160: <input type="submit" name="submit" value="Submit Changes and View" />';
161: }
162:
163: sub problem_web_to_edit_header {
164: my ($rndseed)=@_;
165: my $result.='<input type="hidden" name="problemmode" value="View" />
166: <input type="submit" name="problemmode" value="Edit" />
167: <input type="submit" name="problemmode" value="EditXML" />
168: Random Seed:<input type="text" name="rndseed" width="10" value="'.
169: $rndseed.'" />
170: <input type="submit" name="changerandseed" value="Change" />
171: <input type="submit" name="resetdata" value="Reset Submissions" />
172: <input type="checkbox" name="showallfoils" ';
173: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
1.115 albertel 174: $result.= ' /> Show All Foils
1.105 albertel 175: <hr />';
1.126 albertel 176: my $numtoanalyze=$ENV{'form.numtoanalyze'};
177: if (!$numtoanalyze) { $numtoanalyze=100; }
1.136 ! albertel 178: $result.= '<input type="submit" name="problemmode" value="Answer Distribution" />
! 179: <input type="text" name="numtoanalyze" value="'.
! 180: $numtoanalyze.'" size="5" /> <hr />';
1.128 albertel 181: return $result;
1.48 albertel 182: }
183:
1.65 albertel 184: sub initialize_storage {
185: %Apache::lonhomework::results=();
1.66 albertel 186: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.67 albertel 187: if ($ENV{'request.state'} eq 'construct') {
188: %Apache::lonhomework::history=
1.72 albertel 189: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
1.67 albertel 190: my ($temp)=keys %Apache::lonhomework::history ;
191: &Apache::lonxml::debug("Return message of $temp");
192: } else {
193: %Apache::lonhomework::history=
194: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
195: }
1.65 albertel 196: #ignore error conditions
197: my ($temp)=keys %Apache::lonhomework::history ;
198: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
199: }
200:
201: # -------------------------------------------------------------finalize_storage
202: # Stores away the result has to a student's environment
203: # checks form.grade_ for specific values, other wises stores
204: # to the running users environment
205: sub finalize_storage {
206: my $result;
207: my ($temp) = keys %Apache::lonhomework::results;
208: if ( $temp ne '' ) {
1.66 albertel 209: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.67 albertel 210: if ($ENV{'request.state'} eq 'construct') {
1.72 albertel 211: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
212: $ENV{'request.uri'},'',$domain,$name);
1.67 albertel 213: &Apache::lonxml::debug('Construct Store return message:'.$result);
214: } else {
215: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
216: $symb,$courseid,$domain,$name);
217: &Apache::lonxml::debug('Store return message:'.$result);
218: }
1.65 albertel 219: }
220: return $result;
221: }
222:
223: sub checkout_msg {
224: return (<<ENDCHECKOUT);
225: <h2>The resource needs to be checked out</h2>
226: As a resource gets checked out, a unique timestamped ID is given to it, and a
227: permanent record is left in the system.<p />
228: <font color=red>
229: Checking out resources is subject to course policies, and may exclude future
230: credit even if done erroneously.<p />
1.91 albertel 231: </font>
232: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
233: <input type="hidden" name="doescheckout" value="yes" />
234: <input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />
1.65 albertel 235: </form>
236: ENDCHECKOUT
237: }
238:
1.9 albertel 239: sub start_problem {
1.40 albertel 240: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 241:
1.81 albertel 242: # meta is called from lonpublisher, which doesn't uses the normal
243: # lonhomework method of parsing the file which means that inputtags
244: # won't get reset
245: if ( $Apache::inputtags::part ne '' && $target != 'meta' ) {
1.79 albertel 246: &Apache::lonxml::error('Only one problem allowed in a .problem file');
247: my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[-1]);
248: return '';
249: }
1.19 albertel 250: #intialize globals
251: $Apache::inputtags::part='0';
252: @Apache::inputtags::responselist = ();
1.51 albertel 253: @Apache::inputtags::previous=();
1.87 albertel 254: if ($target ne 'analyze') {
255: &initialize_storage();
256: if ($target eq 'web') {
257: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
258: }
259: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
260: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.73 albertel 261: }
1.42 albertel 262: if ($Apache::lonhomework::type eq '') {
1.53 albertel 263: my $uri=$ENV{'request.uri'};
264: if ($uri=~/\.(\w+)$/) {
265: $Apache::lonhomework::type=$1;
266: &Apache::lonxml::debug("Using type of $1");
267: } else {
268: $Apache::lonhomework::type='problem';
269: &Apache::lonxml::debug("Using default type, problem, :$uri:");
270: }
1.42 albertel 271: }
1.58 www 272:
1.67 albertel 273: #added vars to the scripting enviroment
1.19 albertel 274: my $expression='$external::part='.$Apache::inputtags::part.';';
275: &Apache::run::run($expression,$safeeval);
1.22 albertel 276: my $status;
1.55 www 277: my $accessmsg;
1.36 albertel 278:
1.41 albertel 279: #should get back a <html> or the neccesary stuff to start XML/MathML
1.105 albertel 280: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
1.48 albertel 281: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.96 sakharuk 282: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) { $result = '';}
1.67 albertel 283:
1.136 ! albertel 284: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
1.98 sakharuk 285: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.67 albertel 286: #handle exam checkout
287: if ($Apache::lonhomework::type eq 'exam') {
288: my $token=$Apache::lonhomework::history{"resource.0.outtoken"};
289: if (($ENV{'form.doescheckout'}) && (!$token)) {
290: $token=&Apache::lonxml::maketoken();
291: $Apache::lonhomework::history{"resource.0.outtoken"}=$token;
292: }
293: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
294: }
295:
296: #handle rand seed in construction space
1.105 albertel 297: my $rndseed=&setup_rndseed($safeeval);
1.55 www 298: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
1.22 albertel 299: push (@Apache::inputtags::status,$status);
1.24 albertel 300: my $expression='$external::datestatus="'.$status.'";';
301: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
302: &Apache::run::run($expression,$safeeval);
1.132 albertel 303: &Apache::lonxml::debug("Got $status");
1.54 www 304: if (( $status eq 'CLOSED' ) ||
305: ( $status eq 'UNCHECKEDOUT') ||
306: ( $status eq 'BANNED')) {
1.132 albertel 307: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.21 albertel 308: if ( $target eq "web" ) {
1.41 albertel 309: $result.= $head_tag_start.'</head>';
1.54 www 310: my $msg=$body_tag_start.
311: '<h1>Not open to be viewed</h1>';
312: if ($status eq 'CLOSED') {
1.55 www 313: $msg.='The problem '.$accessmsg;
1.54 www 314: } elsif ($status eq 'UNCHECKEDOUT') {
1.65 albertel 315: $msg.=&checkout_msg;
1.54 www 316: }
1.67 albertel 317: $result.=$msg.'<br />';
1.117 sakharuk 318: } elsif ($target eq 'tex') {
319: $result.="\\begin{document}\\noindent \\vskip 1 mm \\begin{minipage}{\\textwidth}\\vskip 0 mm Problem is not open to be viewed. It $accessmsg \\vskip 0 mm ";
320: }
1.67 albertel 321: } elsif ($target eq 'web') {
1.105 albertel 322: my $name= &get_resource_name($parstack,$safeeval);
1.67 albertel 323: if ($status eq 'CAN_ANSWER') {
324: # create a page header and exit
1.105 albertel 325: $result.="$head_tag_start<title>$name</title></head>
326: $body_tag_start \n $form_tag_start".
1.36 albertel 327: '<input type="hidden" name="submitted" value="yes" />';
1.67 albertel 328: if ($ENV{'request.state'} eq "construct") {
1.105 albertel 329: $result.= &problem_web_to_edit_header($rndseed);
1.67 albertel 330: }
331: # if we are viewing someone else preserve that info
332: if (defined $ENV{'form.grade_symb'}) {
333: foreach my $field ('symb','courseid','domain','username') {
334: $result .= '<input type="hidden" name="grade_'.$field.
335: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
336: }
1.65 albertel 337: }
1.67 albertel 338: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
339: || $status eq 'CLOSED') {
340: $result.=$head_tag_start.
341: "<title>$name</title></head>\n$body_tag_start\n";
1.65 albertel 342: }
1.99 sakharuk 343: } elsif ($target eq 'tex') {
1.103 sakharuk 344: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
345: if ($name eq '') {
346: $name=&Apache::lonnet::EXT('resource.title');
347: if ($name eq 'con_lost') { $name = ''; }
348: }
349: $Apache::lonhomework::name=$name;
1.99 sakharuk 350: my $id = $Apache::inputtags::part;
351: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
352: $duedate = POSIX::strftime("%c",localtime($duedate));
1.101 sakharuk 353: my $temp_file;
354: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
355: if (-e $filename) {
356: $temp_file = Apache::File->new($filename);
1.99 sakharuk 357: } else {
1.101 sakharuk 358: $temp_file = Apache::File->new('>>'.$filename);
359: }
360: my @due_file_content = <$temp_file>;
361: my $due_file_content = $due_file_content[$#due_file_content];
362: chomp $due_file_content;
363: if ($due_file_content ne $duedate) {
364: $temp_file = Apache::File->new('>'.$filename);
1.104 sakharuk 365: print $temp_file "$duedate\n";
1.101 sakharuk 366: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.104 sakharuk 367: if(not $duedate=~m/1969/) {
1.119 sakharuk 368: $result .= '\begin{document} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent \begin{minipage}{\textwidth}';
1.104 sakharuk 369: } else {
1.120 sakharuk 370: $result .= '\begin{document} \noindent \vskip 1 mm \noindent\begin{minipage}{\textwidth}';
1.104 sakharuk 371: }
1.101 sakharuk 372: } else {
1.117 sakharuk 373: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.101 sakharuk 374: }
375: } else {
376: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.119 sakharuk 377: $result .= '\begin{document} \noindent \vskip 1 mm\noindent\begin{minipage}{\textwidth}';
1.101 sakharuk 378: } else {
1.117 sakharuk 379: $result .= '\vskip 1mm \\\\\\\\';
1.101 sakharuk 380: }
1.99 sakharuk 381: }
382: }
1.67 albertel 383: } elsif ($target eq 'edit') {
1.105 albertel 384: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
385: &problem_edit_header();
1.39 albertel 386: my $temp=&Apache::edit::insertlist($target,$token);
1.36 albertel 387: $result.=$temp;
1.67 albertel 388: } elsif ($target eq 'modified') {
1.37 albertel 389: $result=$token->[4];
390: $result.=&Apache::edit::handle_insert();
1.67 albertel 391: } else {
392: # page_start returned a starting result, delete it if we don't need it
393: $result = '';
1.37 albertel 394: }
1.67 albertel 395: return $result;
1.9 albertel 396: }
397:
398: sub end_problem {
1.40 albertel 399: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.16 albertel 400: my $result='';
1.24 albertel 401: my $status=$Apache::inputtags::status['-1'];
1.106 sakharuk 402: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex') {
1.83 albertel 403: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.19 albertel 404: # if part is zero, no <part>s existed, so we need to the grading
405: &Apache::inputtags::grade;
1.106 sakharuk 406: } elsif ( ($target eq 'web' || $target eq 'tex') && $Apache::inputtags::part eq '0' &&
1.91 albertel 407: $status ne 'UNCHECKEDOUT') {
1.19 albertel 408: # if part is zero, no <part>s existed, so we need show the current
409: # grading status
1.122 sakharuk 410: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
1.119 sakharuk 411: if ($Apache::lonhomework::type ne 'exam') {$result.= $gradestatus;}
1.41 albertel 412: }
1.68 albertel 413: if (
1.112 albertel 414: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
415: ($target eq 'answer') || ($target eq 'tex')
1.68 albertel 416: ) {
1.22 albertel 417: if ($status eq 'CAN_ANSWER') {
1.106 sakharuk 418: if ($target ne 'tex') {
419: $result.="</form></body>\n";
420: }
1.91 albertel 421: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
422: $status eq 'UNCHECKEDOUT' ) {
1.106 sakharuk 423: if ($target ne 'tex') {
424: $result.="</body>\n";
425: }
426: }
427: if ($target ne 'tex') {
428: $result.=&Apache::lonxml::xmlend();
429: } else {
430: $result .= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
431: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.117 sakharuk 432: $result .= '\end{minipage}\end{document} ';
1.106 sakharuk 433: } else {
1.117 sakharuk 434: $result .= '';
1.106 sakharuk 435: }
1.41 albertel 436: }
1.22 albertel 437: }
1.65 albertel 438: if ($target eq 'grade') {
439: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
440: &finalize_storage();
441: }
442: } elsif ($target eq 'meta') {
1.18 albertel 443: if ($Apache::inputtags::part eq '0') {
1.16 albertel 444: $result=&Apache::response::mandatory_part_meta;
445: }
1.65 albertel 446: } elsif ($target eq 'edit') {
1.34 albertel 447: &Apache::lonxml::debug("in end_problem with $target, edit");
1.105 albertel 448: $result = &problem_edit_footer();
1.106 sakharuk 449: }
1.48 albertel 450: return $result;
451: }
452:
1.108 albertel 453:
1.48 albertel 454: sub start_library {
455: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.109 albertel 456: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
457:
1.48 albertel 458: if ($target eq 'edit') {
1.109 albertel 459: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
460: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.105 albertel 461: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
462: &problem_edit_header();
1.48 albertel 463: my $temp=&Apache::edit::insertlist($target,$token);
464: $result.=$temp;
1.105 albertel 465: } elsif ($target eq 'modified') {
1.48 albertel 466: $result=$token->[4];
467: $result.=&Apache::edit::handle_insert();
1.110 albertel 468: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
469: $ENV{'request.state'} eq "construct" ) {
1.109 albertel 470: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
471: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.105 albertel 472: my $name=&get_resource_name($parstack,$safeeval);
473: my $rndseed=&setup_rndseed($safeeval);
474: $result.="$head_tag_start<title>$name</title></head>
475: $body_tag_start \n $form_tag_start".
476: '<input type="hidden" name="submitted" value="yes" />';
477: $result.=&problem_web_to_edit_header($rndseed);
1.48 albertel 478: }
1.105 albertel 479: return $result;
1.48 albertel 480: }
481:
482: sub end_library {
483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
484: my $result='';
485: if ($target eq 'edit') {
1.105 albertel 486: $result=&problem_edit_footer();
1.114 albertel 487: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
488: $ENV{'request.state'} eq "construct") {
1.105 albertel 489: $result.='</form></body>'.&Apache::lonxml::xmlend();
1.34 albertel 490: }
1.16 albertel 491: return $result;
1.1 albertel 492: }
493:
494: sub start_block {
1.131 albertel 495: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
496:
497: my $result;
1.1 albertel 498:
1.131 albertel 499: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
500: $target eq 'tex' || $target eq 'analyze') {
501: my $code = @$parstack[$#$parstack];
502: if ($code) {
503: $code =~ s/\"//g;
504: $code .=';return $condition;';
505: $result = &Apache::run::run($code,$safeeval);
506: &Apache::lonxml::debug("block :$code: returned :$result:");
507: } else {
508: $result='1';
509: }
510: if ( ! $result ) {
511: my $skip=&Apache::lonxml::get_all_text("/block",$$parser[-1]);
512: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
513: }
514: $result='';
515: } elsif ($target eq 'edit') {
516: $result .=&Apache::edit::tag_start($target,$token);
517: $result .=&Apache::edit::text_arg('Test Condition:','condition',
518: $token,40);
519: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
520: } elsif ($target eq 'modified') {
521: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
522: $safeeval,'condition');
523: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 524: }
1.131 albertel 525: return $result;
1.1 albertel 526: }
527:
528: sub end_block {
1.38 albertel 529: return '';
1.4 tsai 530: }
531:
532: sub start_while {
1.40 albertel 533: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.4 tsai 534:
535: my $code = @$parstack[$#$parstack];
536: $code =~ s/\"//g;
537: $code .=';return $condition;';
538:
1.5 tsai 539: push( @Apache::structuretags::whileconds, $code);
1.4 tsai 540: my $result = &Apache::run::run($code,$safeeval);
541: my $bodytext=$$parser[$#$parser]->get_text("/while");
1.5 tsai 542: push( @Apache::structuretags::whilebody, $bodytext);
543: if ( $result ) {
1.8 albertel 544: &Apache::lonxml::newparser($parser,\$bodytext);
1.4 tsai 545: }
546: return "";
547: }
548:
549: sub end_while {
1.40 albertel 550: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.5 tsai 551: my $code = pop @Apache::structuretags::whileconds;
552: my $bodytext = pop @Apache::structuretags::whilebody;
553: my $result = &Apache::run::run($code,$safeeval);
554: if ( $result ) {
1.8 albertel 555: &Apache::lonxml::newparser($parser,\$bodytext);
1.5 tsai 556: }
557: return "";
1.1 albertel 558: }
1.6 tsai 559:
1.110 albertel 560: # <randomlist show="1">
1.6 tsai 561: # <tag1>..</tag1>
562: # <tag2>..</tag2>
563: # <tag3>..</tag3>
564: # ...
565: # </randomlist>
566: sub start_randomlist {
1.40 albertel 567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.86 albertel 568: my $result;
1.111 albertel 569: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1.126 albertel 570: $target eq 'tex' || $target eq 'analyze') {
1.71 albertel 571: my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);
572: my $b_parser= HTML::TokeParser->new(\$body);
573: my $b_tok;
574: my @randomlist;
575: my $list_item;
576: while($b_tok = $b_parser->get_token() ) {
577: if($b_tok->[0] eq 'S') { # start tag
578: # get content of the tag until matching end tag
579: # get all text upto the matching tag
580: # and push the content into @randomlist
581: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
582: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
583: push(@randomlist,$list_item);
584: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>";
585: }
586: if($b_tok->[0] eq 'T') { # text
587: # what to do with text in between tags?
588: # print "<b>TEXT $b_tok->[1]</b><br />";
589: }
590: # if($b_tok->[0] eq 'E') { # end tag, should not happen
591: # print "<b>END-TAG $b_tok->[1]</b><br />";
592: # }
593: }
594: my @idx_arr = (0 .. $#randomlist);
595: &Apache::structuretags::shuffle(\@idx_arr);
596: my $bodytext = '';
1.86 albertel 597: my $show=$#randomlist;
598: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
599: $showarg--;
600: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
601: for(0 .. $show) {
1.71 albertel 602: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1.6 tsai 603: }
1.71 albertel 604: &Apache::lonxml::newparser($parser,\$bodytext);
1.86 albertel 605: } elsif ($target eq 'edit' ) {
606: $result .= &Apache::edit::tag_start($target,$token);
607: $result .= &Apache::edit::text_arg('Maximum Tags to Show:','show',$token,5);
608: $result .= &Apache::edit::end_row().&Apache::edit::start_spanning_row();
609: } elsif ($target eq 'modified' ) {
610: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
611: 'show');
612: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.7 tsai 613: }
1.86 albertel 614: return $result;
1.7 tsai 615: }
616:
617: sub shuffle {
618: my $a=shift;
619: my $i;
1.70 albertel 620: if (defined(@$a)) {
621: &Apache::response::setrandomnumber();
622: for($i=@$a;--$i;) {
1.118 albertel 623: my $j=int(&Math::Random::random_uniform() * ($i+1));
1.70 albertel 624: next if $i == $j;
625: @$a[$i,$j] = @$a[$j,$i];
626: }
1.7 tsai 627: }
1.6 tsai 628: }
629:
630: sub end_randomlist {
1.86 albertel 631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
632: my $result;
633: if ($target eq 'edit' ) {
634: $result=&Apache::edit::tag_end($target,$token,'End Randomly Parsed Block');
635: }
636: return $result;
1.6 tsai 637: }
638:
1.11 albertel 639: sub start_part {
1.40 albertel 640: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.95 albertel 641: my $result='';
1.39 albertel 642: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.47 albertel 643: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1.14 albertel 644: $Apache::inputtags::part=$id;
1.18 albertel 645: @Apache::inputtags::responselist = ();
1.51 albertel 646: @Apache::inputtags::previous=();
1.15 www 647: if ($target eq 'meta') {
1.16 albertel 648: return &Apache::response::mandatory_part_meta;
1.95 albertel 649: } elsif ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.55 www 650: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1.23 albertel 651: push (@Apache::inputtags::status,$status);
652: my $expression='$external::datestatus="'.$status.'";';
653: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
654: &Apache::run::run($expression,$safeeval);
655: if ( $status eq 'CLOSED' ) {
1.21 albertel 656: my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]);
657: if ( $target eq "web" ) {
1.95 albertel 658: $result="<br />Part is not open to be viewed. It $accessmsg<br />";
659: } elsif ( $target eq 'tex' ) {
1.124 sakharuk 660: $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.95 albertel 661: }
662: } else {
663: if ($target eq 'tex') {
1.129 sakharuk 664: if ($$tagstack[-2] ne 'problem') {
665: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
666: }
1.21 albertel 667: }
668: }
1.134 albertel 669: } elsif ($target eq 'edit') {
670: $result.=&Apache::edit::tag_start($target,$token);
671: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
672: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
673: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
674:
675: } elsif ($target eq 'modified') {
676: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
677: 'id');
678: if ($constructtag) {
679: $result = &Apache::edit::rebuild_tag($token);
680: $result.=&Apache::edit::handle_insert();
681: }
1.15 www 682: }
1.95 albertel 683: return $result;
1.11 albertel 684: }
685:
686: sub end_part {
1.40 albertel 687: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.18 albertel 688: &Apache::lonxml::debug("in end_part $target ");
1.28 albertel 689: my $status=$Apache::inputtags::status['-1'];
1.23 albertel 690: pop @Apache::inputtags::status;
1.19 albertel 691: if ( $target eq 'meta' ) { return ''; }
1.37 albertel 692: if ( $target eq 'grade' && $status eq 'CAN_ANSWER') {
693: return &Apache::inputtags::grade;
1.28 albertel 694: }
1.108 albertel 695: if ($target eq 'web' || $target eq 'tex' ) {
1.121 sakharuk 696: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
1.120 sakharuk 697: if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}
1.108 albertel 698: return $gradestatus;
1.37 albertel 699: }
700: return '';
1.11 albertel 701: }
1.1 albertel 702:
1.25 albertel 703: sub start_preduedate {
1.40 albertel 704: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 705: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.29 albertel 706: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.133 sakharuk 707: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
708: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.26 albertel 709: &Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]);
1.24 albertel 710: }
711: }
712: return '';
713: }
714:
1.25 albertel 715: sub end_preduedate {
1.24 albertel 716: return '';
717: }
718:
1.25 albertel 719: sub start_postanswerdate {
1.40 albertel 720: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 721: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
1.24 albertel 722: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.26 albertel 723: &Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]);
1.24 albertel 724: }
1.104 sakharuk 725: } elsif ($target eq 'tex') {
726: return '\vskip 0 mm \noindent';
1.24 albertel 727: }
728: return '';
729: }
730:
1.25 albertel 731: sub end_postanswerdate {
1.24 albertel 732: return '';
733: }
734:
1.25 albertel 735: sub start_notsolved {
1.40 albertel 736: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 737: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.24 albertel 738: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
739: &Apache::lonxml::debug("not solved has :$gradestatus:");
740: if ($gradestatus =~ /^correct/) {
741: &Apache::lonxml::debug("skipping");
1.26 albertel 742: &Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]);
1.24 albertel 743: }
744: }
745: return '';
746: }
747:
1.25 albertel 748: sub end_notsolved {
1.24 albertel 749: return '';
750: }
751:
752: sub start_solved {
1.40 albertel 753: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 754: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.24 albertel 755: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
756: if ($gradestatus !~ /^correct/) {
757: &Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]);
758: }
759: }
760: return '';
761: }
762:
763: sub end_solved {
764: return '';
765: }
1.34 albertel 766:
767: sub start_startouttext {
1.40 albertel 768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 769: my @result=(''.'');
770: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
771: return (@result);
1.34 albertel 772: }
773: sub end_startouttext {
1.40 albertel 774: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 775: my $result='';
1.35 albertel 776: my $text='';
777:
1.34 albertel 778: if ($target eq 'edit') {
1.70 albertel 779: $text=&Apache::lonxml::get_all_text("endouttext",$$parser[-1]);
1.43 albertel 780: $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
1.42 albertel 781: <td>Delete:".
782: &Apache::edit::deletelist($target,$token)
1.82 albertel 783: ."</td>
1.42 albertel 784: <td>".
785: &Apache::edit::insertlist($target,$token).
1.82 albertel 786: &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n".
1.116 albertel 787: &Apache::edit::editfield($token->[1],$text,"",80,4);
1.35 albertel 788: }
789: if ($target eq 'modified') {
790: $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
791: $result='<startouttext />'.&Apache::edit::modifiedfield();
1.85 sakharuk 792: }
793: if ($target eq 'tex') {
794: $result .= '\noindent ';
1.34 albertel 795: }
796: return $result;
797: }
798: sub start_endouttext {
1.40 albertel 799: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 800: my $result='';
1.43 albertel 801: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1.130 www 802: if ($target eq "modified") {
803: $result='<endouttext />'.
804: &Apache::edit::handle_insertafter('startouttext'); }
1.34 albertel 805: return $result;
806: }
807: sub end_endouttext {
1.40 albertel 808: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 809: my @result=('','');
810: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
811: return (@result);
1.34 albertel 812: }
1.45 albertel 813: sub delete_startouttext {
814: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
815: # my $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
816: my $text=$$parser['-1']->get_text("/endouttext");
1.69 albertel 817: my $ntoken=$$parser['-1']->get_token();
818: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
819: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1.45 albertel 820: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
821: # they did the last time round
1.69 albertel 822: &Apache::lonxml::increasedepth($ntoken);
823: &Apache::lonxml::decreasedepth($ntoken);
1.45 albertel 824: return 1;
825: }
1.34 albertel 826:
1.1 albertel 827: 1;
828: __END__
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