Annotation of loncom/homework/structuretags.pm, revision 1.270
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.270 ! albertel 4: # $Id: structuretags.pm,v 1.269 2004/09/20 15:57:11 sakharuk 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: #
1.254 www 28: ###
1.54 www 29:
1.133 sakharuk 30:
1.1 albertel 31: package Apache::structuretags;
32:
33: use strict;
34: use Apache::lonnet;
1.101 sakharuk 35: use Apache::File();
1.147 www 36: use Apache::lonmenu;
1.210 albertel 37: use Apache::lonlocal;
1.231 sakharuk 38: use Apache::lonxml;
1.267 albertel 39: use Time::HiRes qw( gettimeofday tv_interval );
1.78 harris41 40: BEGIN {
1.248 albertel 41: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
1.10 albertel 42: }
43:
44: sub start_web {
1.159 albertel 45: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200 albertel 46: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
47: if ($target eq 'web') {
48: return $bodytext;
1.159 albertel 49: }
50: return '';
1.10 albertel 51: }
52:
53: sub end_web {
1.44 ng 54: return '';
1.10 albertel 55: }
56:
57: sub start_tex {
1.159 albertel 58: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198 sakharuk 59: my $result='';
1.200 albertel 60: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
61: if ($target eq 'tex') {
62: return $bodytext.' ';
1.159 albertel 63: }
1.198 sakharuk 64: return $result;;
1.10 albertel 65: }
66:
67: sub end_tex {
1.44 ng 68: return '';
1.9 albertel 69: }
70:
1.48 albertel 71: sub page_start {
1.159 albertel 72: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
73: my %found;
1.207 albertel 74: foreach my $taginside (@$tagstack) {
1.159 albertel 75: foreach my $taglookedfor ('html','body','form') {
76: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
77: }
78: }
79:
80: my $result;
81: my $head_tag_start;
82: if (!defined($found{'html'})) {
83: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
84: $parstack,$parser,$safeeval);
1.254 www 85: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target).
1.261 www 86: &Apache::lonhtmlcommon::htmlareaheaders().
1.270 ! albertel 87: &Apache::lonhtmlcommon::spellheader().
! 88: &Apache::lonxml::fontsettings();
1.159 albertel 89: }
90: my $body_tag_start;
91: if (!defined($found{'body'})) {
1.270 ! albertel 92: $body_tag_start='<body onload="'.&Apache::lonmenu::loadevents().'" '.
! 93: 'onunload="'.&Apache::lonmenu::unloadevents().'" ';
1.159 albertel 94: my $background=&Apache::lonxml::get_param('background',$parstack,
95: $safeeval);
1.199 www 96: if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
1.159 albertel 97: if ($background) {
98: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
99: $background;
100: $body_tag_start.='background="'.$background.'" ';
101: } else {
102: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
103: $safeeval);
1.199 www 104: if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
1.159 albertel 105: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
106: } else {
107: $body_tag_start.='bgcolor="#ffffff"';
108: }
1.199 www 109: }
110: if ($ENV{'browser.fontenhance'} eq 'on') {
111: $body_tag_start.=' style="font-size: x-large;" ';
1.159 albertel 112: }
113: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
114: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
1.165 albertel 115: my ($symb,undef,undef,undef,$publicuser)=
116: &Apache::lonxml::whichuser();
117: if ($symb eq '' && !$publicuser) {
1.159 albertel 118: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
1.211 albertel 119: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
1.159 albertel 120: $body_tag_start.=$help;
121: }
122: }
1.245 albertel 123: $body_tag_start.=&Apache::lonxml::message_location();
1.159 albertel 124: }
125: my $form_tag_start;
126: if (!defined($found{'form'})) {
1.270 ! albertel 127: $form_tag_start='<form name="lonhomework" method="post" action="'.
1.159 albertel 128: $ENV{'request.uri'}.'">';
129: }
130: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105 albertel 131: }
132:
1.141 matthew 133: #use Time::HiRes();
1.105 albertel 134: sub get_resource_name {
1.159 albertel 135: my ($parstack,$safeeval)=@_;
1.204 albertel 136: if (defined($Apache::lonhomework::name)) {
137: return $Apache::lonhomework::name;
138: }
1.159 albertel 139: my $name=&Apache::lonnet::gettitle();
140: if ($name eq '') {
141: $name=&Apache::lonnet::EXT('resource.title');
142: if ($name eq 'con_lost') { $name = ''; }
143: }
1.204 albertel 144: if ($name!~/\S+/) {
145: $name=$ENV{'request.uri'};
1.205 albertel 146: $name=~s-.*/([^/]+)$-$1-;
1.204 albertel 147: }
1.159 albertel 148: $Apache::lonhomework::name=$name;
149: return $name;
1.105 albertel 150: }
151:
152: sub setup_rndseed {
1.159 albertel 153: my ($safeeval)=@_;
154: my $rndseed;
1.162 albertel 155: my ($symb)=&Apache::lonxml::whichuser();
1.247 albertel 156: if ($ENV{'request.state'} eq "construct" || $symb eq '' ||
157: $Apache::lonhomework::history{'resource.CODE'}) {
1.159 albertel 158: $rndseed=$ENV{'form.rndseed'};
159: if (!$rndseed) {
1.162 albertel 160: $rndseed=$Apache::lonhomework::history{'rndseed'};
161: if (!$rndseed) {
162: $rndseed=time;
163: }
1.237 albertel 164: $ENV{'form.rndseed'}=$rndseed;
1.162 albertel 165: }
1.210 albertel 166: if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
167: $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 168: srand(time);
169: $rndseed=int(rand(2100000000));
1.159 albertel 170: $ENV{'form.rndseed'}=$rndseed;
1.180 albertel 171: delete($ENV{'form.resetdata'});
172: delete($ENV{'form.newrandomization'});
1.159 albertel 173: }
1.187 albertel 174: if (defined($rndseed) && $rndseed ne int($rndseed)) {
175: $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
176: }
1.247 albertel 177: if ($Apache::lonhomework::history{'resource.CODE'}) {
178: $rndseed=&Apache::lonnet::rndseed();
179: }
1.221 albertel 180: if ($safeeval) {
181: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 182: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 183: }
1.159 albertel 184: }
185: return $rndseed;
1.105 albertel 186: }
187:
1.268 albertel 188: sub remember_problem_state {
189: return '
190: <input type="hidden" name="problemstate" value="'.$ENV{'form.problemstate'}.'" />
191: <input type="hidden" name="problemtype" value="'.$ENV{'form.problemtype'}.'" />
192: <input type="hidden" name="problemstatus" value="'.$ENV{'form.problemstatus'}.'" />';
193: }
194:
1.105 albertel 195: sub problem_edit_header {
1.268 albertel 196: return '<input type="hidden" name="submitted" value="edit" />'.
197: &Apache::structuretags::remember_problem_state().'
1.210 albertel 198: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 199: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
200: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
201: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
202: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
203: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.260 albertel 204: &Apache::loncommon::help_open_menu('','Problem Editing Help','Problem_Editor_XML_Index','',5,'Authoring',undef,undef,undef,'Problem Editing Help')
205: .'</td></tr></table>'.
1.228 www 206: '<table border="0"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 207: }
208:
209: sub problem_edit_footer {
1.210 albertel 210: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 211: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
212: &Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields).
213: "\n</form>\n</body>\n</html>";
1.105 albertel 214: }
215:
1.235 albertel 216: sub option {
217: my ($value,$name) = @_;
218: my $result ="<option value='".$value."' ";
219: if ($ENV{'form.'.$name} eq $value) {
220: $result.=" selected='on' ";
221: }
222: $result.='>';
223: return $result;
224: }
225:
1.105 albertel 226: sub problem_web_to_edit_header {
1.159 albertel 227: my ($rndseed)=@_;
1.210 albertel 228: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
1.243 matthew 229: <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
230: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
231: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
232: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 233: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270 ! albertel 234: <input type="text" name="rndseed" size="10" value="'.
1.175 albertel 235: $rndseed.'"
1.270 ! albertel 236: onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.105 albertel 237: <input type="checkbox" name="showallfoils" ';
1.159 albertel 238: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
1.228 www 239: $result.= ' />'.&mt(' Show All Foils').
240: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
241: '<hr />';
1.235 albertel 242: $result.="
243: <nobr>
244: Problem Status:
245: <select name='problemstate'>
1.270 ! albertel 246: <option value=''></option>
1.235 albertel 247: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
248: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
249: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
250: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
251: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
252: </select>
253: </nobr>
254: <nobr>
255: Problem Type:
256: <select name='problemtype'>
1.270 ! albertel 257: <option value=''></option>
1.242 albertel 258: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
259: ".&option('problem','problemtype').&mt("Homework problem")."</option>
260: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 261: </select>
262: </nobr>
263: <nobr>
264: Feedback Mode:
265: <select name='problemstatus'>
266: <option value=''></option>
1.242 albertel 267: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
268: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 269: </select>
270: </nobr>
1.242 albertel 271: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 272: <hr />";
1.159 albertel 273: my $numtoanalyze=$ENV{'form.numtoanalyze'};
1.176 albertel 274: if (!$numtoanalyze) { $numtoanalyze=20; }
1.210 albertel 275: $result.= '<input type="submit" name="problemmode" value='.
276: &mt('"Calculate answers').'" /> for
1.136 albertel 277: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 278: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
279: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 280: '',undef,undef,300).
1.210 albertel 281: '<hr />';
1.159 albertel 282: return $result;
1.48 albertel 283: }
284:
1.65 albertel 285: sub initialize_storage {
1.159 albertel 286: %Apache::lonhomework::results=();
1.162 albertel 287: %Apache::lonhomework::history=();
1.159 albertel 288: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 289: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
1.159 albertel 290: %Apache::lonhomework::history=
291: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
292: my ($temp)=keys %Apache::lonhomework::history ;
293: &Apache::lonxml::debug("Return message of $temp");
294: } else {
295: %Apache::lonhomework::history=
296: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
297: }
298: #ignore error conditions
1.67 albertel 299: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 300: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 301: }
302:
303: # -------------------------------------------------------------finalize_storage
304: # Stores away the result has to a student's environment
305: # checks form.grade_ for specific values, other wises stores
306: # to the running users environment
307: sub finalize_storage {
1.159 albertel 308: my $result;
309: my ($temp) = keys %Apache::lonhomework::results;
310: if ( $temp ne '' ) {
311: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 312: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
313: $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};
1.159 albertel 314: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
315: $ENV{'request.uri'},'',$domain,$name);
316: &Apache::lonxml::debug('Construct Store return message:'.$result);
317: } else {
318: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
319: $symb,$courseid,$domain,$name);
320: &Apache::lonxml::debug('Store return message:'.$result);
321: }
1.67 albertel 322: }
1.159 albertel 323: return $result;
1.65 albertel 324: }
325:
326: sub checkout_msg {
1.211 albertel 327: my %lt=&Apache::lonlocal::texthash(
328: 'resource'=>'The resource needs to be checked out',
329: 'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
330: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
331: 'checkout'=>'Check out Exam for Viewing',
332: 'checkout?'=>'Check out Exam?');
1.159 albertel 333: return (<<ENDCHECKOUT);
1.211 albertel 334: <h2>$lt{'resource'}</h2>
335: <p>$lt{'id_expln'}</p>
336: <font color="red">
337: <p>$lt{'warning'}</p>
1.91 albertel 338: </font>
1.270 ! albertel 339: <form name="checkout" method="post" action="$ENV{'request.uri'}">
1.91 albertel 340: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 341: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 342: </form>
343: ENDCHECKOUT
344: }
345:
1.252 albertel 346: sub firstaccess_msg {
1.253 albertel 347: my ($time,$symb)=@_;
348: my ($map)=&Apache::lonnet::decode_symb($symb);
349: my $foldertitle=&Apache::lonnet::gettitle($map);
350: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.252 albertel 351: return (<<ENDCHECKOUT);
1.253 albertel 352: <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
1.270 ! albertel 353: <form name="markaccess" method="post" action="$ENV{'request.uri'}">
1.252 albertel 354: <input type="hidden" name="markaccess" value="yes" />
355: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
356: </form>
357: ENDCHECKOUT
358: }
359:
1.204 albertel 360: sub init_problem_globals {
361: my ($type)=@_;
362: #initialize globals
363: if ($type eq 'problem') {
364: $Apache::inputtags::part='0';
365: @Apache::inputtags::partlist=('0');
1.266 albertel 366: $Apache::lonhomework::problemstatus=&get_problem_status('0');
367: $Apache::lonhomework::ignore_response_errors=0;
368: } elsif ($type eq 'library') {
1.204 albertel 369: $Apache::inputtags::part='';
370: @Apache::inputtags::partlist=();
371: $Apache::lonhomework::problemstatus='';
1.266 albertel 372: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 373: }
374: @Apache::inputtags::responselist = ();
375: @Apache::inputtags::importlist = ();
376: @Apache::inputtags::previous=();
377: @Apache::inputtags::previous_version=();
378: $Apache::structuretags::printanswer='No';
379: @Apache::structuretags::whileconds=();
380: @Apache::structuretags::whilebody=();
381: @Apache::structuretags::whileline=();
382: $Apache::lonhomework::scantronmode=0;
383: undef($Apache::lonhomework::name);
384:
385: }
386:
387: sub reset_problem_globals {
388: my ($type)=@_;
389: undef(%Apache::lonhomework::history);
390: undef(%Apache::lonhomework::results);
391: undef($Apache::inputtags::part);
1.208 albertel 392: #don't undef this, lonhomework.pm takes care of this, we use this to
393: #detect if we try to do 2 problems in one file
394: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 395: undef($Apache::lonhomework::name);
396: }
397:
1.241 albertel 398: sub set_problem_state {
1.240 albertel 399: my ($part)=@_;
400: if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
401: $Apache::lonhomework::history{"resource.$part.solved"}=
402: 'correct_by_student';
403: }
404: }
405:
1.241 albertel 406: sub get_problem_status {
407: my ($part)=@_;
1.267 albertel 408: my $problem_status;
1.241 albertel 409: if ($ENV{'request.state'} eq 'construct' &&
410: defined($ENV{'form.problemstatus'})) {
411: $problem_status=$ENV{'form.problemstatus'};
1.267 albertel 412: } else {
413: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
414: &Apache::lonxml::debug("problem status for $part is $problem_status");
415: &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
1.241 albertel 416: }
417: return $problem_status;
418: }
419:
1.9 albertel 420: sub start_problem {
1.159 albertel 421: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 422:
1.184 albertel 423: if ( $Apache::inputtags::part ne '' ||
424: $Apache::lonhomework::parsing_a_problem) {
425: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
426: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159 albertel 427: return '';
428: }
1.184 albertel 429:
430: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 431: &init_problem_globals('problem');
1.166 albertel 432:
433: if (defined($ENV{'scantron.maxquest'})) {
434: $Apache::lonhomework::scantronmode=1;
435: }
1.161 albertel 436:
1.246 albertel 437: &initialize_storage();
1.159 albertel 438: if ($target ne 'analyze') {
439: if ($target eq 'web') {
440: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238 albertel 441: }
1.241 albertel 442: if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159 albertel 443: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.237 albertel 444: if (($ENV{'request.state'} eq 'construct') &&
445: defined($ENV{'form.problemtype'})) {
446: $Apache::lonhomework::type=$ENV{'form.problemtype'};
447: }
1.240 albertel 448: &Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159 albertel 449: }
1.164 albertel 450: if ($Apache::lonhomework::type eq '' ) {
1.159 albertel 451: my $uri=$ENV{'request.uri'};
452: if ($uri=~/\.(\w+)$/) {
453: $Apache::lonhomework::type=$1;
454: &Apache::lonxml::debug("Using type of $1");
455: } else {
456: $Apache::lonhomework::type='problem';
457: &Apache::lonxml::debug("Using default type, problem, :$uri:");
458: }
1.87 albertel 459: }
1.58 www 460:
1.159 albertel 461: #added vars to the scripting enviroment
1.213 albertel 462: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 463: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 464: &Apache::run::run($expression,$safeeval);
1.159 albertel 465: my $status;
466: my $accessmsg;
467:
468: #should get back a <html> or the neccesary stuff to start XML/MathML
469: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
470: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
471: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
472:
473: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
474: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
475: $target eq 'tex') {
476: #handle exam checkout
477: if ($Apache::lonhomework::type eq 'exam') {
478: my $token=
479: $Apache::lonhomework::history{"resource.0.outtoken"};
480: if (($ENV{'form.doescheckout'}) && (!$token)) {
481: $token=&Apache::lonxml::maketoken();
482: $Apache::lonhomework::history{"resource.0.outtoken"}=
483: $token;
484: }
485: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 486: }
1.252 albertel 487: if ($ENV{'form.markaccess'}) {
488: &Apache::lonnet::set_first_access('map');
489: }
1.159 albertel 490: #handle rand seed in construction space
491: my $rndseed=&setup_rndseed($safeeval);
1.162 albertel 492: my ($symb)=&Apache::lonxml::whichuser();
1.163 albertel 493: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
1.162 albertel 494: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
495: $rndseed.'" />'.
496: '<input type="submit" name="resetdata"
1.211 albertel 497: value="'.&mt('New Problem Variation').'" />'.
1.164 albertel 498: '<input type="hidden" name="username"
1.267 albertel 499: value="'.$ENV{'form.username'}.'" />';
500: if ($ENV{'user.adv'}) {
501: $form_tag_start.=
502: ' <input type="checkbox" name="showallfoils" ';
503: if (defined($ENV{'form.showallfoils'})) {
504: $form_tag_start.='checked="on"';
505: }
506: $form_tag_start.= ' />'.&mt(' Show All Foils');
507: }
508: $form_tag_start.='<hr />';
1.162 albertel 509: }
1.159 albertel 510: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
511: push (@Apache::inputtags::status,$status);
512: my $expression='$external::datestatus="'.$status.'";';
513: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
514: &Apache::run::run($expression,$safeeval);
515: &Apache::lonxml::debug("Got $status");
516: if (( $status eq 'CLOSED' ) ||
517: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 518: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 519: ( $status eq 'BANNED') ||
1.216 albertel 520: ( $status eq 'UNAVAILABLE') ||
521: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 522: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
523: if ( $target eq "web" ) {
524: $result.= $head_tag_start.'</head>';
525: my $msg=$body_tag_start;
526: if ($status eq 'UNAVAILABLE') {
1.245 albertel 527: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 528: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 529: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 530: }
1.216 albertel 531: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159 albertel 532: $msg.='The problem '.$accessmsg;
533: } elsif ($status eq 'UNCHECKEDOUT') {
534: $msg.=&checkout_msg;
1.252 albertel 535: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 536: $msg.=&firstaccess_msg($accessmsg,$symb);
1.159 albertel 537: }
538: $result.=$msg.'<br />';
539: } elsif ($target eq 'tex') {
540: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
541: if ($status eq 'UNAVAILABLE') {
1.211 albertel 542: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 543: } else {
1.211 albertel 544: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 545: }
546: }
547: } elsif ($target eq 'web') {
548: my $name= &get_resource_name($parstack,$safeeval);
1.227 albertel 549: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 550: $body_tag_start \n $form_tag_start".
1.227 albertel 551: '<input type="hidden" name="submitted" value="yes" />';
552: # create a page header and exit
553: if ($ENV{'request.state'} eq "construct") {
554: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
555: }
556: # if we are viewing someone else preserve that info
557: if (defined $ENV{'form.grade_symb'}) {
558: foreach my $field ('symb','courseid','domain','username') {
559: $result .= '<input type="hidden" name="grade_'.$field.
560: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
1.159 albertel 561: }
562: }
563: } elsif ($target eq 'tex') {
1.192 sakharuk 564: my $startminipage = '';
1.191 sakharuk 565: if (not $ENV{'form.problem_split'}=~/yes/) {
1.192 sakharuk 566: $startminipage = '\begin{minipage}{\textwidth}';
1.178 sakharuk 567: }
1.159 albertel 568: my $id = $Apache::inputtags::part;
569: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.223 sakharuk 570: my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
571: my @packages = split /,/,$packages;
572: my $allow_print_points = 0;
573: foreach my $partial_key (@packages) {
1.230 albertel 574: if ($partial_key=~m/^part_0$/) {
1.223 sakharuk 575: $allow_print_points=1;
1.159 albertel 576: }
577: }
578: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
579: $duedate = POSIX::strftime("%c",localtime($duedate));
580: my $temp_file;
581: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
582: if (-e $filename) {
583: $temp_file = Apache::File->new($filename);
584: } else {
585: $temp_file = Apache::File->new('>>'.$filename);
586: }
587: my @due_file_content = <$temp_file>;
588: my $due_file_content = $due_file_content[$#due_file_content];
589: chomp $due_file_content;
1.257 sakharuk 590: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.159 albertel 591: if ($due_file_content ne $duedate) {
592: $temp_file = Apache::File->new('>'.$filename);
593: print $temp_file "$duedate\n";
594: if (not $ENV{'request.symb'} =~ m/\.page_/) {
595: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.206 sakharuk 596: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent '.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
1.159 albertel 597: } else {
1.206 sakharuk 598: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
1.159 albertel 599: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
600: }
1.104 sakharuk 601: } else {
1.159 albertel 602: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104 sakharuk 603: }
1.101 sakharuk 604: } else {
1.159 albertel 605: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.206 sakharuk 606: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
1.159 albertel 607: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
608: } else {
609: $result .= '\vskip 1mm \\\\\\\\';
610: }
611: }
1.99 sakharuk 612: }
1.159 albertel 613: } elsif ($target eq 'edit') {
614: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
615: &problem_edit_header();
1.226 albertel 616: $Apache::lonxml::warnings_error_header=
617: &mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
1.159 albertel 618: my $temp=&Apache::edit::insertlist($target,$token);
619: $result.=$temp;
620: } elsif ($target eq 'modified') {
621: $result=$token->[4];
622: $result.=&Apache::edit::handle_insert();
623: } else {
624: # page_start returned a starting result, delete it if we don't need it
625: $result = '';
1.99 sakharuk 626: }
1.159 albertel 627: return $result;
1.9 albertel 628: }
629:
630: sub end_problem {
1.159 albertel 631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
632: my $result='';
633: my $status=$Apache::inputtags::status['-1'];
634: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
635: $target eq 'tex') {
1.249 albertel 636: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 637: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 638: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
639: &Apache::inputtags::grade;
640: } else {
641: # move any submission data to .hidden
642: &Apache::inputtags::hidealldata($Apache::inputtags::part);
643: }
1.159 albertel 644: } elsif ( ($target eq 'web' || $target eq 'tex') &&
645: $Apache::inputtags::part eq '0' &&
1.252 albertel 646: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 647: # if part is zero, no <part>s existed, so we need show the current
648: # grading status
649: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
650: $result.= $gradestatus;
651: }
652: if (
653: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
654: ($target eq 'answer') || ($target eq 'tex')
655: ) {
1.227 albertel 656: if ($target ne 'tex' &&
657: $ENV{'form.answer_output_mode'} ne 'tex') {
1.254 www 658: $result.="</form>";
659: $result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);
660: $result.="</body>\n";
1.159 albertel 661: }
662: if ($target eq 'web') {
663: $result.=&Apache::lonxml::xmlend();
664: } elsif ($target eq 'tex') {
1.178 sakharuk 665: my $endminipage = '';
1.191 sakharuk 666: if (not $ENV{'form.problem_split'}=~/yes/) {
1.178 sakharuk 667: $endminipage = '\end{minipage}';
668: }
1.257 sakharuk 669: if ($ENV{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 670: $result.=&Apache::lonxml::xmlend($target,$parser);
1.257 sakharuk 671: $result=~s/<\/html>//;
1.159 albertel 672: } else {
1.262 sakharuk 673: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
674: if (not $ENV{'request.symb'} =~ m/\.page_/) {
675: $result .= $endminipage.'\end{document} ';
676: } else {
677: $result .= '';
678: }
1.159 albertel 679: }
680: }
681: }
682: if ($target eq 'grade') {
683: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
684: &finalize_storage();
685: }
1.172 albertel 686: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173 albertel 687: && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172 albertel 688: $result.='</html>'; # normally we get it from xmlend, but in CSTR
689: # we always show answer mode too.
1.159 albertel 690: }
691: } elsif ($target eq 'meta') {
692: if ($Apache::inputtags::part eq '0') {
1.179 albertel 693: @Apache::inputtags::response=();
1.159 albertel 694: $result=&Apache::response::mandatory_part_meta;
695: }
1.215 albertel 696: $result.=&Apache::response::meta_part_order();
1.258 albertel 697: $result.=&Apache::response::meta_response_order();
1.159 albertel 698: } elsif ($target eq 'edit') {
699: &Apache::lonxml::debug("in end_problem with $target, edit");
700: $result = &problem_edit_footer();
701: }
1.155 albertel 702:
1.177 albertel 703: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
704: &Apache::inputtags::check_for_duplicate_ids();
705: }
1.204 albertel 706:
707: &reset_problem_globals('problem');
1.159 albertel 708:
709: return $result;
1.48 albertel 710: }
711:
1.108 albertel 712:
1.48 albertel 713: sub start_library {
1.159 albertel 714: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
715: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244 albertel 716: if ($$tagstack[0] eq 'library') {
717: &init_problem_globals('library');
718: $Apache::lonhomework::type='problem';
719: }
1.159 albertel 720: if ($target eq 'edit') {
721: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
722: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
723: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
724: &problem_edit_header();
725: my $temp=&Apache::edit::insertlist($target,$token);
726: $result.=$temp;
727: } elsif ($target eq 'modified') {
728: $result=$token->[4];
729: $result.=&Apache::edit::handle_insert();
730: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
731: $ENV{'request.state'} eq "construct" ) {
732: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
733: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
734: my $name=&get_resource_name($parstack,$safeeval);
735: my $rndseed=&setup_rndseed($safeeval);
736: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 737: $body_tag_start \n $form_tag_start".
1.159 albertel 738: '<input type="hidden" name="submitted" value="yes" />';
739: $result.=&problem_web_to_edit_header($rndseed);
740: }
741: return $result;
1.48 albertel 742: }
743:
744: sub end_library {
1.159 albertel 745: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
746: my $result='';
747: if ($target eq 'edit') {
748: $result=&problem_edit_footer();
749: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
750: $ENV{'request.state'} eq "construct") {
751: $result.='</form></body>'.&Apache::lonxml::xmlend();
752: }
1.204 albertel 753: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 754: return $result;
1.197 www 755: }
756:
757: sub start_definetag {
758: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
759:
760: my $result;
761:
762: my $name = $token->[2]->{'name'};
763: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
764: if ($name=~/^\//) {
765: $result=
766: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
767: } else {
768: $result=
769: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
770: }
771: $skip=~s/\</\<\;/gs;
772: $skip=~s/\>/\>\;/gs;
773: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
774: return $result;
775: }
776:
777: sub end_definetag {
778: return '';
1.1 albertel 779: }
780:
781: sub start_block {
1.201 albertel 782: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 783:
784: my $result;
1.1 albertel 785:
1.160 albertel 786: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 787: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 788: my $code = $token->[2]->{'condition'};
1.201 albertel 789: if (defined($code)) {
1.137 albertel 790: if (!$Apache::lonxml::default_homework_loaded) {
791: &Apache::lonxml::default_homework_load($safeeval);
792: }
1.131 albertel 793: $result = &Apache::run::run($code,$safeeval);
794: &Apache::lonxml::debug("block :$code: returned :$result:");
795: } else {
796: $result='1';
797: }
798: if ( ! $result ) {
1.201 albertel 799: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 800: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
801: }
802: $result='';
803: } elsif ($target eq 'edit') {
804: $result .=&Apache::edit::tag_start($target,$token);
805: $result .=&Apache::edit::text_arg('Test Condition:','condition',
806: $token,40);
807: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
808: } elsif ($target eq 'modified') {
809: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
810: $safeeval,'condition');
811: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 812: }
1.131 albertel 813: return $result;
1.1 albertel 814: }
815:
816: sub end_block {
1.167 www 817: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
818: my $result;
819: if ($target eq "edit") {
820: $result.= &Apache::edit::tag_end($target,$token,'');
821: }
822: return $result;
823: }
824:
825: sub start_languageblock {
1.201 albertel 826: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 827:
828: my $result;
829:
830: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
831: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 832: my $include = $token->[2]->{'include'};
833: my $exclude = $token->[2]->{'exclude'};
834: my %languages=&Apache::loncommon::display_languages();
835: $result='1';
836: if ($include) {
837: $result='';
838: foreach (split(/\,/,$include)) {
839: if ($languages{$_}) { $result='1'; }
840: }
841: }
842: if ($exclude) {
843: foreach (split(/\,/,$exclude)) {
844: if ($languages{$_}) { $result='0'; }
845: }
846: }
847: if ( ! $result ) {
848: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
849: $style);
850: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
851: }
852: $result='';
1.167 www 853: } elsif ($target eq 'edit') {
854: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 855: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 856: $token,40);
1.211 albertel 857: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 858: $token,40);
859: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
860: } elsif ($target eq 'modified') {
861: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 862: $safeeval,'include',
863: 'exclude');
1.167 www 864: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
865: }
866: return $result;
867: }
868:
869: sub end_languageblock {
1.170 www 870: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
871: my $result;
1.201 albertel 872: if ($target eq "edit") {
1.170 www 873: $result.= &Apache::edit::tag_end($target,$token,'');
874: }
875: return $result;
876: }
877:
878: sub start_instructorcomment {
1.201 albertel 879: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 880:
881: my $result;
882:
883: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
884: $target eq 'tex' || $target eq 'analyze') {
885: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
1.269 sakharuk 886: if ( (! $result) or ($ENV{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 887: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
888: $parser,$style);
1.170 www 889: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
890: }
891: $result='';
892: } elsif ($target eq 'edit') {
893: $result .=&Apache::edit::tag_start($target,$token);
894: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
895: }
896: return $result;
897: }
898:
899: sub end_instructorcomment {
1.159 albertel 900: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 901: my $result;
902: if ($target eq "edit") {
903: $result.= &Apache::edit::tag_end($target,$token,'');
904: }
905: return $result;
1.4 tsai 906: }
907:
908: sub start_while {
1.159 albertel 909: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
910:
1.160 albertel 911: my $result;
1.161 albertel 912: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 913: $target eq 'tex' || $target eq 'analyze') {
914: my $code = $token->[2]->{'condition'};
1.4 tsai 915:
1.160 albertel 916: push( @Apache::structuretags::whileconds, $code);
917: if (!$Apache::lonxml::default_homework_loaded) {
918: &Apache::lonxml::default_homework_load($safeeval);
919: }
920: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 921: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 922: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 923: push( @Apache::structuretags::whileline, $token->[5]);
924: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 925: if ( $result ) {
926: &Apache::lonxml::newparser($parser,\$bodytext);
927: }
928: } elsif ($target eq 'edit') {
929: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 930: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 931: $token,40);
932: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
933: } elsif ($target eq 'modified') {
934: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
935: $safeeval,'condition');
936: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 937: }
1.160 albertel 938: return $result;
1.4 tsai 939: }
940:
941: sub end_while {
1.159 albertel 942: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 943: my $result;
944:
945: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
946: $target eq 'tex' || $target eq 'analyze') {
947: my $code = pop(@Apache::structuretags::whileconds);
948: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 949: my $line = pop(@Apache::structuretags::whileline);
950: my $return = &Apache::run::run($code,$safeeval);
951: my $starttime=time;
952: my $error=0;
953: while ($return) {
954: if (time-$starttime >
955: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.270 ! albertel 956: #$return = 0; $error=1; next;
1.161 albertel 957: }
958: $result.=&Apache::scripttag::xmlparse($bodytext);
959: $return = &Apache::run::run($code,$safeeval);
960: }
961: if ($error) {
1.270 ! albertel 962: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running <while> on line').' '.$line.'</pre>');
1.160 albertel 963: }
964: } elsif ($target eq "edit") {
965: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 966: }
1.160 albertel 967: return $result;
1.1 albertel 968: }
1.6 tsai 969:
1.160 albertel 970: # <randomlist show="1">
1.6 tsai 971: # <tag1>..</tag1>
972: # <tag2>..</tag2>
973: # <tag3>..</tag3>
1.160 albertel 974: # ...
1.6 tsai 975: # </randomlist>
976: sub start_randomlist {
1.159 albertel 977: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
978: my $result;
979: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
980: $target eq 'tex' || $target eq 'analyze') {
981: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
982: my $b_parser= HTML::TokeParser->new(\$body);
983: my $b_tok;
984: my @randomlist;
985: my $list_item;
986: while($b_tok = $b_parser->get_token() ) {
987: if($b_tok->[0] eq 'S') { # start tag
988: # get content of the tag until matching end tag
989: # get all text upto the matching tag
990: # and push the content into @randomlist
991: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
992: $b_parser);
993: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
994: push(@randomlist,$list_item);
995: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
996: # $list_item</b>";
997: }
998: if($b_tok->[0] eq 'T') { # text
999: # what to do with text in between tags?
1000: # print "<b>TEXT $b_tok->[1]</b><br />";
1001: }
1002: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1003: # print "<b>END-TAG $b_tok->[1]</b><br />";
1004: # }
1005: }
1006: my @idx_arr = (0 .. $#randomlist);
1007: &Apache::structuretags::shuffle(\@idx_arr);
1008: my $bodytext = '';
1009: my $show=$#randomlist;
1010: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1011: $showarg--;
1012: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1013: for(0 .. $show) {
1014: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1015: }
1016: &Apache::lonxml::newparser($parser,\$bodytext);
1017: } elsif ($target eq 'edit' ) {
1018: $result .=&Apache::edit::tag_start($target,$token);
1019: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1020: $token,5);
1021: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1022: } elsif ($target eq 'modified' ) {
1023: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1024: $safeeval,'show');
1025: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1026: }
1027: return $result;
1.7 tsai 1028: }
1029:
1030: sub shuffle {
1031: my $a=shift;
1032: my $i;
1.70 albertel 1033: if (defined(@$a)) {
1.251 albertel 1034: &Apache::response::pushrandomnumber();
1.159 albertel 1035: for($i=@$a;--$i;) {
1036: my $j=int(&Math::Random::random_uniform() * ($i+1));
1037: next if $i == $j;
1038: @$a[$i,$j] = @$a[$j,$i];
1039: }
1.251 albertel 1040: &Apache::response::poprandomnumber();
1.7 tsai 1041: }
1.6 tsai 1042: }
1043:
1044: sub end_randomlist {
1.159 albertel 1045: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1046: my $result;
1047: if ($target eq 'edit' ) {
1048: $result=&Apache::edit::tag_end($target,$token,
1049: 'End Randomly Parsed Block');
1050: }
1051: return $result;
1.6 tsai 1052: }
1053:
1.11 albertel 1054: sub start_part {
1.159 albertel 1055: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1056: my $result='';
1057: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1058: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1059: $Apache::inputtags::part=$id;
1.177 albertel 1060: push(@Apache::inputtags::partlist,$id);
1061: @Apache::inputtags::response=();
1.159 albertel 1062: @Apache::inputtags::previous=();
1063: @Apache::inputtags::previous_version=();
1.241 albertel 1064: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1065: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1066: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1067: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1068:
1.214 albertel 1069: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1070: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1071: &Apache::run::run($expression,$safeeval);
1.159 albertel 1072:
1073: if ($target eq 'meta') {
1.224 www 1074: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1075: return &Apache::response::mandatory_part_meta.
1076: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1077: } elsif ($target eq 'web' || $target eq 'grade' ||
1078: $target eq 'answer' || $target eq 'tex') {
1079: if ($hidden) {
1080: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1081: } else {
1082: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1083: push (@Apache::inputtags::status,$status);
1084: my $expression='$external::datestatus="'.$status.'";';
1085: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1086: &Apache::run::run($expression,$safeeval);
1.240 albertel 1087: if ($ENV{'request.state'} eq 'construct') {
1.241 albertel 1088: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1089: }
1.216 albertel 1090: if (( $status eq 'CLOSED' ) ||
1091: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1092: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1093: ( $status eq 'BANNED') ||
1094: ( $status eq 'UNAVAILABLE') ||
1095: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1096: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1097: if ( $target eq "web" ) {
1.211 albertel 1098: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1099: } elsif ( $target eq 'tex' ) {
1.195 sakharuk 1100: if (not $ENV{'form.problem_split'}=~/yes/) {
1.211 albertel 1101: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1102: } else {
1.211 albertel 1103: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1104: }
1.159 albertel 1105: }
1106: } else {
1107: if ($target eq 'tex') {
1.195 sakharuk 1108: if (not $ENV{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1109: if ($$tagstack[-2] eq 'td') {
1110: $result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1111: } else {
1112: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1113: }
1.195 sakharuk 1114: }
1.159 albertel 1115: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230 albertel 1116: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222 sakharuk 1117: my @allkeys = split /,/,$allkeys;
1118: my $allow_print_points = 0;
1119: foreach my $partial_key (@allkeys) {
1.230 albertel 1120: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1121: if ($1 ne '0') {$allow_print_points=1;}
1122: }
1123: }
1124: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1125: } elsif ($target eq 'web') {
1126: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1127: }
1128: }
1129: }
1130: } elsif ($target eq 'edit') {
1131: $result.=&Apache::edit::tag_start($target,$token);
1132: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1133: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1134: ' '.
1135: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1136: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1137: } elsif ($target eq 'modified') {
1138: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1139: $safeeval,'id','display');
1.159 albertel 1140: if ($constructtag) {
1.225 albertel 1141: #limiting ids to only letters numbers, and space
1.224 www 1142: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1143: $result = &Apache::edit::rebuild_tag($token);
1144: $result.=&Apache::edit::handle_insert();
1145: }
1146: }
1147: return $result;
1.11 albertel 1148: }
1149:
1150: sub end_part {
1.159 albertel 1151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1152: &Apache::lonxml::debug("in end_part $target ");
1153: my $status=$Apache::inputtags::status['-1'];
1154: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1155: my $result='';
1156: if ( $target eq 'meta' ) {
1157: $result='';
1.249 albertel 1158: } elsif ($target eq 'grade') {
1159: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1160: !$hidden) {
1161: $result=&Apache::inputtags::grade;
1162: } else {
1163: # move any submission data to .hidden
1164: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1165: }
1.159 albertel 1166: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1167: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1168: $target);
1.212 albertel 1169: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1170: $gradestatus='';
1171: }
1.159 albertel 1172: $result=$gradestatus;
1.265 sakharuk 1173: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1174: } elsif ($target eq 'edit') {
1175: $result=&Apache::edit::end_table();
1.159 albertel 1176: }
1177: pop @Apache::inputtags::status;
1178: $Apache::inputtags::part='';
1179: return $result;
1.11 albertel 1180: }
1.1 albertel 1181:
1.25 albertel 1182: sub start_preduedate {
1.159 albertel 1183: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1184: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1185: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159 albertel 1186: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1187: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1188: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1189: &Apache::lonxml::get_all_text("/preduedate",$parser);
1190: }
1.24 albertel 1191: }
1.159 albertel 1192: return '';
1.24 albertel 1193: }
1194:
1.25 albertel 1195: sub end_preduedate {
1.159 albertel 1196: return '';
1.24 albertel 1197: }
1198:
1.25 albertel 1199: sub start_postanswerdate {
1.159 albertel 1200: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1201: if ($target eq 'web' || $target eq 'grade') {
1.159 albertel 1202: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1203: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1204: }
1205: } elsif ($target eq 'tex') {
1.234 albertel 1206: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1207: }
1208: return '';
1.24 albertel 1209: }
1210:
1.25 albertel 1211: sub end_postanswerdate {
1.159 albertel 1212: return '';
1.24 albertel 1213: }
1214:
1.25 albertel 1215: sub start_notsolved {
1.159 albertel 1216: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1217: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1218: $target eq 'tex') {
1219: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1220: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1221: if ($gradestatus =~ /^correct/ &&
1222: &Apache::response::show_answer()) {
1.159 albertel 1223: &Apache::lonxml::debug("skipping");
1224: &Apache::lonxml::get_all_text("/notsolved",$parser);
1225: }
1.24 albertel 1226: }
1.159 albertel 1227: return '';
1.24 albertel 1228: }
1229:
1.25 albertel 1230: sub end_notsolved {
1.159 albertel 1231: return '';
1.24 albertel 1232: }
1233:
1234: sub start_solved {
1.159 albertel 1235: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1236: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1237: $target eq 'tex') {
1238: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1239: if ($gradestatus !~ /^correct/ ||
1240: !&Apache::response::show_answer()) {
1.159 albertel 1241: &Apache::lonxml::get_all_text("/solved",$parser);
1242: }
1.24 albertel 1243: }
1.159 albertel 1244: return '';
1.24 albertel 1245: }
1246:
1247: sub end_solved {
1.248 albertel 1248: return '';
1249: }
1250:
1251: sub start_problemtype {
1252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1253: my $result;
1254: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1255: $target eq 'tex' || $target eq 'analyze') {
1256: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1257: if (!defined($mode)) { $mode='show'; }
1258: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1259: my $found=0;
1260: foreach my $type (split(',',$for)) {
1261: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1262: }
1263: if ($mode eq 'show' && !$found) {
1264: &Apache::lonxml::get_all_text("/problemtype",$parser);
1265: }
1266: if ($mode eq 'hide' && $found) {
1267: &Apache::lonxml::get_all_text("/problemtype",$parser);
1268: }
1269: } elsif ($target eq 'edit') {
1270: $result .=&Apache::edit::tag_start($target,$token);
1271: $result.=&Apache::edit::select_arg('Mode:','mode',
1272: [['show','Show'],
1273: ['hide','Hide']]
1274: ,$token);
1275: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1276: [ ['exam','Exam/Quiz Problem'],
1277: ['survey','Survey'],
1278: ['problem','Homework Problem'] ]
1279: ,$token);
1280: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1281: } elsif ($target eq 'modified') {
1282: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1283: $safeeval,'mode','for');
1284: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1285: }
1286: return $result;
1287: }
1288:
1289: sub end_problemtype {
1.159 albertel 1290: return '';
1.24 albertel 1291: }
1.34 albertel 1292:
1293: sub start_startouttext {
1.159 albertel 1294: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1295: my @result=(''.'');
1296: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1297: return (@result);
1.34 albertel 1298: }
1.159 albertel 1299:
1.34 albertel 1300: sub end_startouttext {
1.159 albertel 1301: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1302: my $result='';
1303: my $text='';
1304:
1305: if ($target eq 'edit') {
1306: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1307: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1308: <td>".&mt('Delete:').
1.159 albertel 1309: &Apache::edit::deletelist($target,$token)
1310: ."</td>
1.42 albertel 1311: <td>".
1.159 albertel 1312: &Apache::edit::insertlist($target,$token).
1313: &Apache::edit::end_row().
1314: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1315: . &Apache::loncommon::helpLatexCheatsheet () .
1.255 www 1316: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1317: }
1318: if ($target eq 'modified') {
1.219 albertel 1319: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1320: }
1321: if ($target eq 'tex') {
1322: $result .= '\noindent ';
1323: }
1324: return $result;
1.34 albertel 1325: }
1.159 albertel 1326:
1.34 albertel 1327: sub start_endouttext {
1.159 albertel 1328: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1329: my $result='';
1330: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1331: if ($target eq "modified") {
1332: $result='<endouttext />'.
1333: &Apache::edit::handle_insertafter('startouttext'); }
1334: return $result;
1.34 albertel 1335: }
1.159 albertel 1336:
1.34 albertel 1337: sub end_endouttext {
1.159 albertel 1338: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1339: my @result=('','');
1340: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1341: return (@result);
1.34 albertel 1342: }
1.159 albertel 1343:
1.45 albertel 1344: sub delete_startouttext {
1.159 albertel 1345: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1346: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1347: my $text=$$parser['-1']->get_text("/endouttext");
1348: my $ntoken=$$parser['-1']->get_token();
1349: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1350: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1351: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1352: # they did the last time round
1353: &Apache::lonxml::increasedepth($ntoken);
1354: &Apache::lonxml::decreasedepth($ntoken);
1355: return 1;
1.193 www 1356: }
1357:
1358: sub start_simpleeditbutton {
1359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1360: my $result='';
1361: if (($target eq 'web') &&
1362: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220 www 1363: my $url=$ENV{'request.noversionuri'};
1.193 www 1364: $url=~s/\?.*$//;
1.194 www 1365: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211 albertel 1366: '<a href="'.$url.'/smpedit">'.&mt('Simple Problem Editor').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1.196 www 1367: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1368: }
1369: return $result;
1370: }
1371:
1372: sub end_simpleeditbutton {
1373: return '';
1.45 albertel 1374: }
1.34 albertel 1375:
1.1 albertel 1376: 1;
1377: __END__
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