Annotation of loncom/homework/structuretags.pm, revision 1.238
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.238 ! albertel 4: # $Id: structuretags.pm,v 1.237 2004/02/16 18:40:18 albertel 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();
1.147 www 38: use Apache::lonmenu;
1.210 albertel 39: use Apache::lonlocal;
1.231 sakharuk 40: use Apache::lonxml;
1.1 albertel 41:
1.78 harris41 42: BEGIN {
1.193 www 43: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext',
1.197 www 44: 'simpleeditbutton','definetag'));
1.10 albertel 45: }
46:
47: sub start_web {
1.159 albertel 48: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200 albertel 49: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
50: if ($target eq 'web') {
51: return $bodytext;
1.159 albertel 52: }
53: return '';
1.10 albertel 54: }
55:
56: sub end_web {
1.44 ng 57: return '';
1.10 albertel 58: }
59:
60: sub start_tex {
1.159 albertel 61: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198 sakharuk 62: my $result='';
1.200 albertel 63: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
64: if ($target eq 'tex') {
65: return $bodytext.' ';
1.159 albertel 66: }
1.198 sakharuk 67: return $result;;
1.10 albertel 68: }
69:
70: sub end_tex {
1.44 ng 71: return '';
1.9 albertel 72: }
73:
1.48 albertel 74: sub page_start {
1.159 albertel 75: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
76: my %found;
1.207 albertel 77: foreach my $taginside (@$tagstack) {
1.159 albertel 78: foreach my $taglookedfor ('html','body','form') {
79: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
80: }
81: }
82:
83: my $result;
84: my $head_tag_start;
85: if (!defined($found{'html'})) {
86: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
87: $parstack,$parser,$safeeval);
1.218 albertel 88: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
1.159 albertel 89: }
90: my $body_tag_start;
91: if (!defined($found{'body'})) {
92: $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
93: 'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
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: }
123: }
124: my $form_tag_start;
125: if (!defined($found{'form'})) {
126: $form_tag_start='<form name="lonhomework" method="POST" action="'.
127: $ENV{'request.uri'}.'">';
128: }
129: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105 albertel 130: }
131:
1.141 matthew 132: #use Time::HiRes();
1.105 albertel 133: sub get_resource_name {
1.159 albertel 134: my ($parstack,$safeeval)=@_;
1.204 albertel 135: if (defined($Apache::lonhomework::name)) {
136: return $Apache::lonhomework::name;
137: }
1.159 albertel 138: my $name=&Apache::lonnet::gettitle();
139: if ($name eq '') {
140: $name=&Apache::lonnet::EXT('resource.title');
141: if ($name eq 'con_lost') { $name = ''; }
142: }
1.204 albertel 143: if ($name!~/\S+/) {
144: $name=$ENV{'request.uri'};
1.205 albertel 145: $name=~s-.*/([^/]+)$-$1-;
1.204 albertel 146: }
1.159 albertel 147: $Apache::lonhomework::name=$name;
148: return $name;
1.105 albertel 149: }
150:
151: sub setup_rndseed {
1.159 albertel 152: my ($safeeval)=@_;
153: my $rndseed;
1.162 albertel 154: my ($symb)=&Apache::lonxml::whichuser();
155: if ($ENV{'request.state'} eq "construct" || $symb eq '') {
1.159 albertel 156: $rndseed=$ENV{'form.rndseed'};
157: if (!$rndseed) {
1.162 albertel 158: $rndseed=$Apache::lonhomework::history{'rndseed'};
159: if (!$rndseed) {
160: $rndseed=time;
161: }
1.237 albertel 162: $ENV{'form.rndseed'}=$rndseed;
1.162 albertel 163: }
1.210 albertel 164: if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
165: $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 166: srand(time);
167: $rndseed=int(rand(2100000000));
1.159 albertel 168: $ENV{'form.rndseed'}=$rndseed;
1.180 albertel 169: delete($ENV{'form.resetdata'});
170: delete($ENV{'form.newrandomization'});
1.159 albertel 171: }
1.187 albertel 172: if (defined($rndseed) && $rndseed ne int($rndseed)) {
173: $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
174: }
1.221 albertel 175: if ($safeeval) {
176: &Apache::lonxml::debug("Setting rndseed to $rndseed");
177: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
178: }
1.159 albertel 179: }
180: return $rndseed;
1.105 albertel 181: }
182:
183: sub problem_edit_header {
1.159 albertel 184: return '<input type="hidden" name="submitted" value="edit" />
1.210 albertel 185: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
186: <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />
187: <input type="submit" name="problemmode" value="'.&mt('EditXML').'" />
188: <input type="submit" name="Undo" value="'.&mt('undo').'" /> <hr />
189: <input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.229 www 190: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
191: &Apache::loncommon::help_open_topic('Problem_Editor_XML_Index',
192: 'Problem Editing Help').'</td><td>'.
193: &Apache::loncommon::help_open_faq(5).
194: &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>'.
1.228 www 195: '<table border="0"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 196: }
197:
198: sub problem_edit_footer {
1.210 albertel 199: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
200: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />';
1.105 albertel 201: }
202:
1.235 albertel 203: sub option {
204: my ($value,$name) = @_;
205: my $result ="<option value='".$value."' ";
206: if ($ENV{'form.'.$name} eq $value) {
207: $result.=" selected='on' ";
208: }
209: $result.='>';
210: return $result;
211: }
212:
1.105 albertel 213: sub problem_web_to_edit_header {
1.159 albertel 214: my ($rndseed)=@_;
1.210 albertel 215: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
216: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
217: <input type="submit" name="problemmode" value="'.&mt('EditXML').'" />
218: <input type="submit" name="newrandomization" value="'.&mt('New Randomization').'" />
219: <input type="submit" name="resetdata" value="'.&mt('Reset Submissions').'" />
220: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.175 albertel 221: <input type="text" name="rndseed" width="10" value="'.
222: $rndseed.'"
223: onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.105 albertel 224: <input type="checkbox" name="showallfoils" ';
1.159 albertel 225: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
1.228 www 226: $result.= ' />'.&mt(' Show All Foils').
227: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
228: '<hr />';
1.235 albertel 229: $result.="
230: <nobr>
231: Problem Status:
232: <select name='problemstate'>
233: <option name=''></option>
234: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
235: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
236: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
237: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
238: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
239: </select>
240: </nobr>
241: <nobr>
242: Problem Type:
243: <select name='problemtype'>
244: <option name=''></option>
245: ".&option('exam' ,'problemtype')."Exam Problem</option>
246: ".&option('problem','problemtype')."Homework problem</option>
247: ".&option('survey' ,'problemtype')."Survey Question</option>
248: </select>
249: </nobr>
250: <nobr>
251: Feedback Mode:
252: <select name='problemstatus'>
253: <option value=''></option>
254: ".&option('yes','problemstatus')."Show Feedback</option>
255: ".&option('no', 'problemstatus')."Don\'t Show Feedback</option>
256: </select>
257: <input type='submit' name='changeproblemmode' value='Change' />
258: </nobr>
259: <hr />";
1.159 albertel 260: my $numtoanalyze=$ENV{'form.numtoanalyze'};
1.176 albertel 261: if (!$numtoanalyze) { $numtoanalyze=20; }
1.210 albertel 262: $result.= '<input type="submit" name="problemmode" value='.
263: &mt('"Calculate answers').'" /> for
1.136 albertel 264: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 265: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
266: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 267: '',undef,undef,300).
1.210 albertel 268: '<hr />';
1.159 albertel 269: return $result;
1.48 albertel 270: }
271:
1.65 albertel 272: sub initialize_storage {
1.159 albertel 273: %Apache::lonhomework::results=();
1.162 albertel 274: %Apache::lonhomework::history=();
1.159 albertel 275: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 276: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
1.159 albertel 277: %Apache::lonhomework::history=
278: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
279: my ($temp)=keys %Apache::lonhomework::history ;
280: &Apache::lonxml::debug("Return message of $temp");
281: } else {
282: %Apache::lonhomework::history=
283: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
284: }
285: #ignore error conditions
1.67 albertel 286: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 287: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 288: }
289:
290: # -------------------------------------------------------------finalize_storage
291: # Stores away the result has to a student's environment
292: # checks form.grade_ for specific values, other wises stores
293: # to the running users environment
294: sub finalize_storage {
1.159 albertel 295: my $result;
296: my ($temp) = keys %Apache::lonhomework::results;
297: if ( $temp ne '' ) {
298: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 299: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
300: $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};
1.159 albertel 301: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
302: $ENV{'request.uri'},'',$domain,$name);
303: &Apache::lonxml::debug('Construct Store return message:'.$result);
304: } else {
305: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
306: $symb,$courseid,$domain,$name);
307: &Apache::lonxml::debug('Store return message:'.$result);
308: }
1.67 albertel 309: }
1.159 albertel 310: return $result;
1.65 albertel 311: }
312:
313: sub checkout_msg {
1.211 albertel 314: my %lt=&Apache::lonlocal::texthash(
315: 'resource'=>'The resource needs to be checked out',
316: 'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
317: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
318: 'checkout'=>'Check out Exam for Viewing',
319: 'checkout?'=>'Check out Exam?');
1.159 albertel 320: return (<<ENDCHECKOUT);
1.211 albertel 321: <h2>$lt{'resource'}</h2>
322: <p>$lt{'id_expln'}</p>
323: <font color="red">
324: <p>$lt{'warning'}</p>
1.91 albertel 325: </font>
326: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
327: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 328: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 329: </form>
330: ENDCHECKOUT
331: }
332:
1.204 albertel 333: sub init_problem_globals {
334: my ($type)=@_;
335: #initialize globals
336: if ($type eq 'problem') {
337: $Apache::inputtags::part='0';
338: @Apache::inputtags::partlist=('0');
339: $Apache::lonhomework::problemstatus=
340: &Apache::lonnet::EXT('resource.0.problemstatus');
1.235 albertel 341: &Apache::lonxml::debug("problem status is $Apache::lonhomework::problemstatus");
342: &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
343: if ($ENV{'request.state'} eq 'construct' &&
344: defined($ENV{'form.problemstatus'})) {
345: $Apache::lonhomework::problemstatus=$ENV{'form.problemstatus'};
346: }
1.204 albertel 347: } else {
348: $Apache::inputtags::part='';
349: @Apache::inputtags::partlist=();
350: $Apache::lonhomework::problemstatus='';
351: }
352: @Apache::inputtags::responselist = ();
353: @Apache::inputtags::importlist = ();
354: @Apache::inputtags::previous=();
355: @Apache::inputtags::previous_version=();
356: $Apache::structuretags::printanswer='No';
357: @Apache::structuretags::whileconds=();
358: @Apache::structuretags::whilebody=();
359: @Apache::structuretags::whileline=();
360: $Apache::lonhomework::scantronmode=0;
361: undef($Apache::lonhomework::name);
362:
363: }
364:
365: sub reset_problem_globals {
366: my ($type)=@_;
367: undef(%Apache::lonhomework::history);
368: undef(%Apache::lonhomework::results);
369: undef($Apache::inputtags::part);
1.208 albertel 370: #don't undef this, lonhomework.pm takes care of this, we use this to
371: #detect if we try to do 2 problems in one file
372: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 373: undef($Apache::lonhomework::name);
374: }
375:
1.9 albertel 376: sub start_problem {
1.159 albertel 377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 378:
1.184 albertel 379: if ( $Apache::inputtags::part ne '' ||
380: $Apache::lonhomework::parsing_a_problem) {
381: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
382: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159 albertel 383: return '';
384: }
1.184 albertel 385:
386: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 387: &init_problem_globals('problem');
1.166 albertel 388:
389: if (defined($ENV{'scantron.maxquest'})) {
390: $Apache::lonhomework::scantronmode=1;
391: }
1.161 albertel 392:
1.159 albertel 393: if ($target ne 'analyze') {
394: &initialize_storage();
395: if ($target eq 'web') {
396: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238 ! albertel 397: }
! 398: if ($ENV{'request.state'} eq 'construct' &&
! 399: $ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct' ) {
! 400: $Apache::lonhomework::history{'resource.0.solved'}=
! 401: 'correct_by_student';
1.159 albertel 402: }
403: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.237 albertel 404: if (($ENV{'request.state'} eq 'construct') &&
405: defined($ENV{'form.problemtype'})) {
406: $Apache::lonhomework::type=$ENV{'form.problemtype'};
407: }
1.159 albertel 408: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
409: }
1.164 albertel 410: if ($Apache::lonhomework::type eq '' ) {
1.159 albertel 411: my $uri=$ENV{'request.uri'};
412: if ($uri=~/\.(\w+)$/) {
413: $Apache::lonhomework::type=$1;
414: &Apache::lonxml::debug("Using type of $1");
415: } else {
416: $Apache::lonhomework::type='problem';
417: &Apache::lonxml::debug("Using default type, problem, :$uri:");
418: }
1.87 albertel 419: }
1.58 www 420:
1.159 albertel 421: #added vars to the scripting enviroment
1.213 albertel 422: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.24 albertel 423: &Apache::run::run($expression,$safeeval);
1.159 albertel 424: my $status;
425: my $accessmsg;
426:
427: #should get back a <html> or the neccesary stuff to start XML/MathML
428: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
429: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
430: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
431:
432: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
433: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
434: $target eq 'tex') {
435: #handle exam checkout
436: if ($Apache::lonhomework::type eq 'exam') {
437: my $token=
438: $Apache::lonhomework::history{"resource.0.outtoken"};
439: if (($ENV{'form.doescheckout'}) && (!$token)) {
440: $token=&Apache::lonxml::maketoken();
441: $Apache::lonhomework::history{"resource.0.outtoken"}=
442: $token;
443: }
444: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 445: }
1.159 albertel 446:
447: #handle rand seed in construction space
448: my $rndseed=&setup_rndseed($safeeval);
1.162 albertel 449: my ($symb)=&Apache::lonxml::whichuser();
1.163 albertel 450: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
1.162 albertel 451: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
452: $rndseed.'" />'.
453: '<input type="submit" name="resetdata"
1.211 albertel 454: value="'.&mt('New Problem Variation').'" />'.
1.164 albertel 455: '<input type="hidden" name="username"
1.185 albertel 456: value="'.$ENV{'form.username'}.'" /> <br />';
1.162 albertel 457: }
1.159 albertel 458: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
459: push (@Apache::inputtags::status,$status);
460: my $expression='$external::datestatus="'.$status.'";';
461: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
462: &Apache::run::run($expression,$safeeval);
463: &Apache::lonxml::debug("Got $status");
464: if (( $status eq 'CLOSED' ) ||
465: ( $status eq 'UNCHECKEDOUT') ||
466: ( $status eq 'BANNED') ||
1.216 albertel 467: ( $status eq 'UNAVAILABLE') ||
468: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 469: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
470: if ( $target eq "web" ) {
471: $result.= $head_tag_start.'</head>';
472: my $msg=$body_tag_start;
473: if ($status eq 'UNAVAILABLE') {
1.211 albertel 474: $result.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.159 albertel 475: } else {
1.211 albertel 476: $result.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 477: }
1.216 albertel 478: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159 albertel 479: $msg.='The problem '.$accessmsg;
480: } elsif ($status eq 'UNCHECKEDOUT') {
481: $msg.=&checkout_msg;
482: }
483: $result.=$msg.'<br />';
484: } elsif ($target eq 'tex') {
485: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
486: if ($status eq 'UNAVAILABLE') {
1.211 albertel 487: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 488: } else {
1.211 albertel 489: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 490: }
491: }
492: } elsif ($target eq 'web') {
493: my $name= &get_resource_name($parstack,$safeeval);
1.227 albertel 494: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 495: $body_tag_start \n $form_tag_start".
1.227 albertel 496: '<input type="hidden" name="submitted" value="yes" />';
497: # create a page header and exit
498: if ($ENV{'request.state'} eq "construct") {
499: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
500: }
501: # if we are viewing someone else preserve that info
502: if (defined $ENV{'form.grade_symb'}) {
503: foreach my $field ('symb','courseid','domain','username') {
504: $result .= '<input type="hidden" name="grade_'.$field.
505: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
1.159 albertel 506: }
507: }
508: } elsif ($target eq 'tex') {
1.192 sakharuk 509: my $startminipage = '';
1.191 sakharuk 510: if (not $ENV{'form.problem_split'}=~/yes/) {
1.192 sakharuk 511: $startminipage = '\begin{minipage}{\textwidth}';
1.178 sakharuk 512: }
1.159 albertel 513: my $id = $Apache::inputtags::part;
514: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.223 sakharuk 515: my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
516: my @packages = split /,/,$packages;
517: my $allow_print_points = 0;
518: foreach my $partial_key (@packages) {
1.230 albertel 519: if ($partial_key=~m/^part_0$/) {
1.223 sakharuk 520: $allow_print_points=1;
1.159 albertel 521: }
522: }
523: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
524: $duedate = POSIX::strftime("%c",localtime($duedate));
525: my $temp_file;
526: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
527: if (-e $filename) {
528: $temp_file = Apache::File->new($filename);
529: } else {
530: $temp_file = Apache::File->new('>>'.$filename);
531: }
532: my @due_file_content = <$temp_file>;
533: my $due_file_content = $due_file_content[$#due_file_content];
534: chomp $due_file_content;
1.231 sakharuk 535: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval));
1.159 albertel 536: if ($due_file_content ne $duedate) {
537: $temp_file = Apache::File->new('>'.$filename);
538: print $temp_file "$duedate\n";
539: if (not $ENV{'request.symb'} =~ m/\.page_/) {
540: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.206 sakharuk 541: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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 542: } else {
1.206 sakharuk 543: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 544: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
545: }
1.104 sakharuk 546: } else {
1.159 albertel 547: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104 sakharuk 548: }
1.101 sakharuk 549: } else {
1.159 albertel 550: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.206 sakharuk 551: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 552: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
553: } else {
554: $result .= '\vskip 1mm \\\\\\\\';
555: }
556: }
1.99 sakharuk 557: }
1.159 albertel 558: } elsif ($target eq 'edit') {
559: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
560: &problem_edit_header();
1.226 albertel 561: $Apache::lonxml::warnings_error_header=
562: &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 563: my $temp=&Apache::edit::insertlist($target,$token);
564: $result.=$temp;
565: } elsif ($target eq 'modified') {
566: $result=$token->[4];
567: $result.=&Apache::edit::handle_insert();
568: } else {
569: # page_start returned a starting result, delete it if we don't need it
570: $result = '';
1.99 sakharuk 571: }
1.159 albertel 572: return $result;
1.9 albertel 573: }
574:
575: sub end_problem {
1.159 albertel 576: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
577: my $result='';
578: my $status=$Apache::inputtags::status['-1'];
579: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
580: $target eq 'tex') {
581: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
1.232 albertel 582: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode)) {
1.159 albertel 583: # if part is zero, no <part>s existed, so we need to the grading
584: &Apache::inputtags::grade;
585: } elsif ( ($target eq 'web' || $target eq 'tex') &&
586: $Apache::inputtags::part eq '0' &&
587: $status ne 'UNCHECKEDOUT') {
588: # if part is zero, no <part>s existed, so we need show the current
589: # grading status
590: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
591: $result.= $gradestatus;
592: }
593: if (
594: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
595: ($target eq 'answer') || ($target eq 'tex')
596: ) {
1.227 albertel 597: if ($target ne 'tex' &&
598: $ENV{'form.answer_output_mode'} ne 'tex') {
599: $result.="</form></body>\n";
1.159 albertel 600: }
601: if ($target eq 'web') {
602: $result.=&Apache::lonxml::xmlend();
603: } elsif ($target eq 'tex') {
1.178 sakharuk 604: my $endminipage = '';
1.191 sakharuk 605: if (not $ENV{'form.problem_split'}=~/yes/) {
1.178 sakharuk 606: $endminipage = '\end{minipage}';
607: }
1.174 sakharuk 608: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.159 albertel 609: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.178 sakharuk 610: $result .= $endminipage.'\end{document} ';
1.159 albertel 611: } else {
612: $result .= '';
613: }
614: }
615: }
616: if ($target eq 'grade') {
617: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
618: &finalize_storage();
619: }
1.172 albertel 620: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173 albertel 621: && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172 albertel 622: $result.='</html>'; # normally we get it from xmlend, but in CSTR
623: # we always show answer mode too.
1.159 albertel 624: }
625: } elsif ($target eq 'meta') {
626: if ($Apache::inputtags::part eq '0') {
1.179 albertel 627: @Apache::inputtags::response=();
1.159 albertel 628: $result=&Apache::response::mandatory_part_meta;
629: }
1.215 albertel 630: $result.=&Apache::response::meta_part_order();
1.159 albertel 631: } elsif ($target eq 'edit') {
632: &Apache::lonxml::debug("in end_problem with $target, edit");
633: $result = &problem_edit_footer();
634: }
1.155 albertel 635:
1.177 albertel 636: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
637: &Apache::inputtags::check_for_duplicate_ids();
638: }
1.204 albertel 639:
640: &reset_problem_globals('problem');
1.159 albertel 641:
642: return $result;
1.48 albertel 643: }
644:
1.108 albertel 645:
1.48 albertel 646: sub start_library {
1.159 albertel 647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
648: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.204 albertel 649: if ($$tagstack[0] eq 'library') { &init_problem_globals('library') };
1.159 albertel 650: if ($target eq 'edit') {
651: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
652: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
653: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
654: &problem_edit_header();
655: my $temp=&Apache::edit::insertlist($target,$token);
656: $result.=$temp;
657: } elsif ($target eq 'modified') {
658: $result=$token->[4];
659: $result.=&Apache::edit::handle_insert();
660: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
661: $ENV{'request.state'} eq "construct" ) {
662: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
663: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
664: my $name=&get_resource_name($parstack,$safeeval);
665: my $rndseed=&setup_rndseed($safeeval);
666: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 667: $body_tag_start \n $form_tag_start".
1.159 albertel 668: '<input type="hidden" name="submitted" value="yes" />';
669: $result.=&problem_web_to_edit_header($rndseed);
670: }
671: return $result;
1.48 albertel 672: }
673:
674: sub end_library {
1.159 albertel 675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
676: my $result='';
677: if ($target eq 'edit') {
678: $result=&problem_edit_footer();
679: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
680: $ENV{'request.state'} eq "construct") {
681: $result.='</form></body>'.&Apache::lonxml::xmlend();
682: }
1.204 albertel 683: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 684: return $result;
1.197 www 685: }
686:
687: sub start_definetag {
688: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
689:
690: my $result;
691:
692: my $name = $token->[2]->{'name'};
693: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
694: if ($name=~/^\//) {
695: $result=
696: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
697: } else {
698: $result=
699: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
700: }
701: $skip=~s/\</\<\;/gs;
702: $skip=~s/\>/\>\;/gs;
703: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
704: return $result;
705: }
706:
707: sub end_definetag {
708: return '';
1.1 albertel 709: }
710:
711: sub start_block {
1.201 albertel 712: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 713:
714: my $result;
1.1 albertel 715:
1.160 albertel 716: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 717: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 718: my $code = $token->[2]->{'condition'};
1.201 albertel 719: if (defined($code)) {
1.137 albertel 720: if (!$Apache::lonxml::default_homework_loaded) {
721: &Apache::lonxml::default_homework_load($safeeval);
722: }
1.131 albertel 723: $result = &Apache::run::run($code,$safeeval);
724: &Apache::lonxml::debug("block :$code: returned :$result:");
725: } else {
726: $result='1';
727: }
728: if ( ! $result ) {
1.201 albertel 729: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 730: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
731: }
732: $result='';
733: } elsif ($target eq 'edit') {
734: $result .=&Apache::edit::tag_start($target,$token);
735: $result .=&Apache::edit::text_arg('Test Condition:','condition',
736: $token,40);
737: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
738: } elsif ($target eq 'modified') {
739: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
740: $safeeval,'condition');
741: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 742: }
1.131 albertel 743: return $result;
1.1 albertel 744: }
745:
746: sub end_block {
1.167 www 747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
748: my $result;
749: if ($target eq "edit") {
750: $result.= &Apache::edit::tag_end($target,$token,'');
751: }
752: return $result;
753: }
754:
755: sub start_languageblock {
1.201 albertel 756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 757:
758: my $result;
759:
760: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
761: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 762: my $include = $token->[2]->{'include'};
763: my $exclude = $token->[2]->{'exclude'};
764: my %languages=&Apache::loncommon::display_languages();
765: $result='1';
766: if ($include) {
767: $result='';
768: foreach (split(/\,/,$include)) {
769: if ($languages{$_}) { $result='1'; }
770: }
771: }
772: if ($exclude) {
773: foreach (split(/\,/,$exclude)) {
774: if ($languages{$_}) { $result='0'; }
775: }
776: }
777: if ( ! $result ) {
778: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
779: $style);
780: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
781: }
782: $result='';
1.167 www 783: } elsif ($target eq 'edit') {
784: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 785: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 786: $token,40);
1.211 albertel 787: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 788: $token,40);
789: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
790: } elsif ($target eq 'modified') {
791: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 792: $safeeval,'include',
793: 'exclude');
1.167 www 794: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
795: }
796: return $result;
797: }
798:
799: sub end_languageblock {
1.170 www 800: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
801: my $result;
1.201 albertel 802: if ($target eq "edit") {
1.170 www 803: $result.= &Apache::edit::tag_end($target,$token,'');
804: }
805: return $result;
806: }
807:
808: sub start_instructorcomment {
1.201 albertel 809: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 810:
811: my $result;
812:
813: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
814: $target eq 'tex' || $target eq 'analyze') {
815: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
816: if ( ! $result ) {
1.201 albertel 817: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
818: $parser,$style);
1.170 www 819: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
820: }
821: $result='';
822: } elsif ($target eq 'edit') {
823: $result .=&Apache::edit::tag_start($target,$token);
824: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
825: }
826: return $result;
827: }
828:
829: sub end_instructorcomment {
1.159 albertel 830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 831: my $result;
832: if ($target eq "edit") {
833: $result.= &Apache::edit::tag_end($target,$token,'');
834: }
835: return $result;
1.4 tsai 836: }
837:
838: sub start_while {
1.159 albertel 839: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
840:
1.160 albertel 841: my $result;
1.161 albertel 842: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 843: $target eq 'tex' || $target eq 'analyze') {
844: my $code = $token->[2]->{'condition'};
1.4 tsai 845:
1.160 albertel 846: push( @Apache::structuretags::whileconds, $code);
847: if (!$Apache::lonxml::default_homework_loaded) {
848: &Apache::lonxml::default_homework_load($safeeval);
849: }
850: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 851: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 852: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 853: push( @Apache::structuretags::whileline, $token->[5]);
854: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 855: if ( $result ) {
856: &Apache::lonxml::newparser($parser,\$bodytext);
857: }
858: } elsif ($target eq 'edit') {
859: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 860: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 861: $token,40);
862: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
863: } elsif ($target eq 'modified') {
864: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
865: $safeeval,'condition');
866: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 867: }
1.160 albertel 868: return $result;
1.4 tsai 869: }
870:
871: sub end_while {
1.159 albertel 872: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 873: my $result;
874:
875: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
876: $target eq 'tex' || $target eq 'analyze') {
877: my $code = pop(@Apache::structuretags::whileconds);
878: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 879: my $line = pop(@Apache::structuretags::whileline);
880: my $return = &Apache::run::run($code,$safeeval);
881: my $starttime=time;
882: my $error=0;
883: while ($return) {
884: if (time-$starttime >
885: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
886: $return = 0; $error=1; next;
887: }
888: $result.=&Apache::scripttag::xmlparse($bodytext);
889: $return = &Apache::run::run($code,$safeeval);
890: }
891: if ($error) {
1.211 albertel 892: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running <while$gt; on line').' '.$line.'</pre>');
1.160 albertel 893: }
894: } elsif ($target eq "edit") {
895: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 896: }
1.160 albertel 897: return $result;
1.1 albertel 898: }
1.6 tsai 899:
1.160 albertel 900: # <randomlist show="1">
1.6 tsai 901: # <tag1>..</tag1>
902: # <tag2>..</tag2>
903: # <tag3>..</tag3>
1.160 albertel 904: # ...
1.6 tsai 905: # </randomlist>
906: sub start_randomlist {
1.159 albertel 907: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
908: my $result;
909: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
910: $target eq 'tex' || $target eq 'analyze') {
911: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
912: my $b_parser= HTML::TokeParser->new(\$body);
913: my $b_tok;
914: my @randomlist;
915: my $list_item;
916: while($b_tok = $b_parser->get_token() ) {
917: if($b_tok->[0] eq 'S') { # start tag
918: # get content of the tag until matching end tag
919: # get all text upto the matching tag
920: # and push the content into @randomlist
921: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
922: $b_parser);
923: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
924: push(@randomlist,$list_item);
925: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
926: # $list_item</b>";
927: }
928: if($b_tok->[0] eq 'T') { # text
929: # what to do with text in between tags?
930: # print "<b>TEXT $b_tok->[1]</b><br />";
931: }
932: # if($b_tok->[0] eq 'E') { # end tag, should not happen
933: # print "<b>END-TAG $b_tok->[1]</b><br />";
934: # }
935: }
936: my @idx_arr = (0 .. $#randomlist);
937: &Apache::structuretags::shuffle(\@idx_arr);
938: my $bodytext = '';
939: my $show=$#randomlist;
940: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
941: $showarg--;
942: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
943: for(0 .. $show) {
944: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
945: }
946: &Apache::lonxml::newparser($parser,\$bodytext);
947: } elsif ($target eq 'edit' ) {
948: $result .=&Apache::edit::tag_start($target,$token);
949: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
950: $token,5);
951: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
952: } elsif ($target eq 'modified' ) {
953: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
954: $safeeval,'show');
955: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
956: }
957: return $result;
1.7 tsai 958: }
959:
960: sub shuffle {
961: my $a=shift;
962: my $i;
1.70 albertel 963: if (defined(@$a)) {
1.159 albertel 964: &Apache::response::setrandomnumber();
965: for($i=@$a;--$i;) {
966: my $j=int(&Math::Random::random_uniform() * ($i+1));
967: next if $i == $j;
968: @$a[$i,$j] = @$a[$j,$i];
969: }
1.7 tsai 970: }
1.6 tsai 971: }
972:
973: sub end_randomlist {
1.159 albertel 974: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
975: my $result;
976: if ($target eq 'edit' ) {
977: $result=&Apache::edit::tag_end($target,$token,
978: 'End Randomly Parsed Block');
979: }
980: return $result;
1.6 tsai 981: }
982:
1.11 albertel 983: sub start_part {
1.159 albertel 984: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
985: my $result='';
986: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
987: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
988: $Apache::inputtags::part=$id;
1.177 albertel 989: push(@Apache::inputtags::partlist,$id);
990: @Apache::inputtags::response=();
1.159 albertel 991: @Apache::inputtags::previous=();
992: @Apache::inputtags::previous_version=();
1.169 albertel 993: $Apache::lonhomework::problemstatus=
994: &Apache::lonnet::EXT("resource.$id.problemstatus");
1.159 albertel 995: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.214 albertel 996: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.209 albertel 997: &Apache::run::run($expression,$safeeval);
1.159 albertel 998:
999: if ($target eq 'meta') {
1.224 www 1000: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1001: return &Apache::response::mandatory_part_meta.
1002: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1003: } elsif ($target eq 'web' || $target eq 'grade' ||
1004: $target eq 'answer' || $target eq 'tex') {
1005: if ($hidden) {
1006: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1007: } else {
1008: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1009: push (@Apache::inputtags::status,$status);
1010: my $expression='$external::datestatus="'.$status.'";';
1011: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1012: &Apache::run::run($expression,$safeeval);
1.216 albertel 1013: if (( $status eq 'CLOSED' ) ||
1014: ( $status eq 'UNCHECKEDOUT') ||
1015: ( $status eq 'BANNED') ||
1016: ( $status eq 'UNAVAILABLE') ||
1017: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1018: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1019: if ( $target eq "web" ) {
1.211 albertel 1020: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1021: } elsif ( $target eq 'tex' ) {
1.195 sakharuk 1022: if (not $ENV{'form.problem_split'}=~/yes/) {
1.211 albertel 1023: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1024: } else {
1.211 albertel 1025: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1026: }
1.159 albertel 1027: }
1028: } else {
1029: if ($target eq 'tex') {
1.195 sakharuk 1030: if (not $ENV{'form.problem_split'}=~/yes/) {
1031: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1032: }
1.159 albertel 1033: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230 albertel 1034: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222 sakharuk 1035: my @allkeys = split /,/,$allkeys;
1036: my $allow_print_points = 0;
1037: foreach my $partial_key (@allkeys) {
1.230 albertel 1038: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1039: if ($1 ne '0') {$allow_print_points=1;}
1040: }
1041: }
1042: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1043: } elsif ($target eq 'web') {
1044: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1045: }
1046: }
1047: }
1048: } elsif ($target eq 'edit') {
1049: $result.=&Apache::edit::tag_start($target,$token);
1050: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1051: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1052: ' '.
1053: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1054: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1055: } elsif ($target eq 'modified') {
1056: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1057: $safeeval,'id','display');
1.159 albertel 1058: if ($constructtag) {
1.225 albertel 1059: #limiting ids to only letters numbers, and space
1.224 www 1060: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1061: $result = &Apache::edit::rebuild_tag($token);
1062: $result.=&Apache::edit::handle_insert();
1063: }
1064: }
1065: return $result;
1.11 albertel 1066: }
1067:
1068: sub end_part {
1.159 albertel 1069: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1070: &Apache::lonxml::debug("in end_part $target ");
1071: my $status=$Apache::inputtags::status['-1'];
1072: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1073: my $result='';
1074: if ( $target eq 'meta' ) {
1075: $result='';
1.232 albertel 1076: } elsif ($target eq 'grade' &&
1077: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1078: !$hidden) {
1.159 albertel 1079: $result=&Apache::inputtags::grade;
1080: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1081: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1082: $target);
1.212 albertel 1083: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1084: $gradestatus='';
1085: }
1.159 albertel 1086: $result=$gradestatus;
1.181 albertel 1087: } elsif ($target eq 'edit') {
1088: $result=&Apache::edit::end_table();
1.159 albertel 1089: }
1090: pop @Apache::inputtags::status;
1091: $Apache::inputtags::part='';
1092: return $result;
1.11 albertel 1093: }
1.1 albertel 1094:
1.25 albertel 1095: sub start_preduedate {
1.159 albertel 1096: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1097: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1098: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159 albertel 1099: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1100: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1101: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1102: &Apache::lonxml::get_all_text("/preduedate",$parser);
1103: }
1.24 albertel 1104: }
1.159 albertel 1105: return '';
1.24 albertel 1106: }
1107:
1.25 albertel 1108: sub end_preduedate {
1.159 albertel 1109: return '';
1.24 albertel 1110: }
1111:
1.25 albertel 1112: sub start_postanswerdate {
1.159 albertel 1113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1114: if ($target eq 'web' || $target eq 'grade') {
1.159 albertel 1115: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1116: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1117: }
1118: } elsif ($target eq 'tex') {
1.234 albertel 1119: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1120: }
1121: return '';
1.24 albertel 1122: }
1123:
1.25 albertel 1124: sub end_postanswerdate {
1.159 albertel 1125: return '';
1.24 albertel 1126: }
1127:
1.25 albertel 1128: sub start_notsolved {
1.159 albertel 1129: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1130: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1131: $target eq 'tex') {
1132: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1133: &Apache::lonxml::debug("not solved has :$gradestatus:");
1134: if ($gradestatus =~ /^correct/) {
1135: &Apache::lonxml::debug("skipping");
1136: &Apache::lonxml::get_all_text("/notsolved",$parser);
1137: }
1.24 albertel 1138: }
1.159 albertel 1139: return '';
1.24 albertel 1140: }
1141:
1.25 albertel 1142: sub end_notsolved {
1.159 albertel 1143: return '';
1.24 albertel 1144: }
1145:
1146: sub start_solved {
1.159 albertel 1147: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1148: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1149: $target eq 'tex') {
1150: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1151: if ($gradestatus !~ /^correct/) {
1152: &Apache::lonxml::get_all_text("/solved",$parser);
1153: }
1.24 albertel 1154: }
1.159 albertel 1155: return '';
1.24 albertel 1156: }
1157:
1158: sub end_solved {
1.159 albertel 1159: return '';
1.24 albertel 1160: }
1.34 albertel 1161:
1162: sub start_startouttext {
1.159 albertel 1163: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1164: my @result=(''.'');
1165: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1166: return (@result);
1.34 albertel 1167: }
1.159 albertel 1168:
1.34 albertel 1169: sub end_startouttext {
1.159 albertel 1170: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1171: my $result='';
1172: my $text='';
1173:
1174: if ($target eq 'edit') {
1175: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1176: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1177: <td>".&mt('Delete:').
1.159 albertel 1178: &Apache::edit::deletelist($target,$token)
1179: ."</td>
1.42 albertel 1180: <td>".
1.159 albertel 1181: &Apache::edit::insertlist($target,$token).
1182: &Apache::edit::end_row().
1183: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1184: . &Apache::loncommon::helpLatexCheatsheet () .
1.159 albertel 1185: &Apache::edit::editfield($token->[1],$text,"",80,4);
1186: }
1187: if ($target eq 'modified') {
1.219 albertel 1188: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1189: }
1190: if ($target eq 'tex') {
1191: $result .= '\noindent ';
1192: }
1193: return $result;
1.34 albertel 1194: }
1.159 albertel 1195:
1.34 albertel 1196: sub start_endouttext {
1.159 albertel 1197: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1198: my $result='';
1199: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1200: if ($target eq "modified") {
1201: $result='<endouttext />'.
1202: &Apache::edit::handle_insertafter('startouttext'); }
1203: return $result;
1.34 albertel 1204: }
1.159 albertel 1205:
1.34 albertel 1206: sub end_endouttext {
1.159 albertel 1207: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1208: my @result=('','');
1209: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1210: return (@result);
1.34 albertel 1211: }
1.159 albertel 1212:
1.45 albertel 1213: sub delete_startouttext {
1.159 albertel 1214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1215: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1216: my $text=$$parser['-1']->get_text("/endouttext");
1217: my $ntoken=$$parser['-1']->get_token();
1218: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1219: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1220: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1221: # they did the last time round
1222: &Apache::lonxml::increasedepth($ntoken);
1223: &Apache::lonxml::decreasedepth($ntoken);
1224: return 1;
1.193 www 1225: }
1226:
1227: sub start_simpleeditbutton {
1228: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1229: my $result='';
1230: if (($target eq 'web') &&
1231: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220 www 1232: my $url=$ENV{'request.noversionuri'};
1.193 www 1233: $url=~s/\?.*$//;
1.194 www 1234: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211 albertel 1235: '<a href="'.$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 1236: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1237: }
1238: return $result;
1239: }
1240:
1241: sub end_simpleeditbutton {
1242: return '';
1.45 albertel 1243: }
1.34 albertel 1244:
1.1 albertel 1245: 1;
1246: __END__
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