Annotation of loncom/homework/structuretags.pm, revision 1.244
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.244 ! albertel 4: # $Id: structuretags.pm,v 1.243 2004/03/02 20:59:25 matthew 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 $rndseed;
1.105 albertel 181: }
182:
183: sub problem_edit_header {
1.159 albertel 184: return '<input type="hidden" name="submitted" value="edit" />
1.210 albertel 185: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 186: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
187: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
188: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
189: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
190: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.229 www 191: &Apache::loncommon::help_open_topic('Problem_Editor_XML_Index',
192: 'Problem Editing Help').'</td><td>'.
193: &Apache::loncommon::help_open_faq(5).
194: &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>'.
1.228 www 195: '<table border="0"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 196: }
197:
198: sub problem_edit_footer {
1.210 albertel 199: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
200: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />';
1.105 albertel 201: }
202:
1.235 albertel 203: sub option {
204: my ($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').'" />
1.243 matthew 216: <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
217: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
218: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
219: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 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>
1.242 albertel 245: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
246: ".&option('problem','problemtype').&mt("Homework problem")."</option>
247: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 248: </select>
249: </nobr>
250: <nobr>
251: Feedback Mode:
252: <select name='problemstatus'>
253: <option value=''></option>
1.242 albertel 254: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
255: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 256: </select>
257: </nobr>
1.242 albertel 258: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 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');
1.241 albertel 339:
340: $Apache::lonhomework::problemstatus=&get_problem_status('0')
1.204 albertel 341: } else {
342: $Apache::inputtags::part='';
343: @Apache::inputtags::partlist=();
344: $Apache::lonhomework::problemstatus='';
345: }
346: @Apache::inputtags::responselist = ();
347: @Apache::inputtags::importlist = ();
348: @Apache::inputtags::previous=();
349: @Apache::inputtags::previous_version=();
350: $Apache::structuretags::printanswer='No';
351: @Apache::structuretags::whileconds=();
352: @Apache::structuretags::whilebody=();
353: @Apache::structuretags::whileline=();
354: $Apache::lonhomework::scantronmode=0;
355: undef($Apache::lonhomework::name);
356:
357: }
358:
359: sub reset_problem_globals {
360: my ($type)=@_;
361: undef(%Apache::lonhomework::history);
362: undef(%Apache::lonhomework::results);
363: undef($Apache::inputtags::part);
1.208 albertel 364: #don't undef this, lonhomework.pm takes care of this, we use this to
365: #detect if we try to do 2 problems in one file
366: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 367: undef($Apache::lonhomework::name);
368: }
369:
1.241 albertel 370: sub set_problem_state {
1.240 albertel 371: my ($part)=@_;
372: if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
373: $Apache::lonhomework::history{"resource.$part.solved"}=
374: 'correct_by_student';
375: }
376: }
377:
1.241 albertel 378: sub get_problem_status {
379: my ($part)=@_;
380: my $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
381: &Apache::lonxml::debug("problem status for $part is $problem_status");
382: &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
383: if ($ENV{'request.state'} eq 'construct' &&
384: defined($ENV{'form.problemstatus'})) {
385: $problem_status=$ENV{'form.problemstatus'};
386: }
387: return $problem_status;
388: }
389:
1.9 albertel 390: sub start_problem {
1.159 albertel 391: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 392:
1.184 albertel 393: if ( $Apache::inputtags::part ne '' ||
394: $Apache::lonhomework::parsing_a_problem) {
395: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
396: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159 albertel 397: return '';
398: }
1.184 albertel 399:
400: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 401: &init_problem_globals('problem');
1.166 albertel 402:
403: if (defined($ENV{'scantron.maxquest'})) {
404: $Apache::lonhomework::scantronmode=1;
405: }
1.161 albertel 406:
1.159 albertel 407: if ($target ne 'analyze') {
408: &initialize_storage();
409: if ($target eq 'web') {
410: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238 albertel 411: }
1.241 albertel 412: if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159 albertel 413: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.237 albertel 414: if (($ENV{'request.state'} eq 'construct') &&
415: defined($ENV{'form.problemtype'})) {
416: $Apache::lonhomework::type=$ENV{'form.problemtype'};
417: }
1.240 albertel 418: &Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159 albertel 419: }
1.164 albertel 420: if ($Apache::lonhomework::type eq '' ) {
1.159 albertel 421: my $uri=$ENV{'request.uri'};
422: if ($uri=~/\.(\w+)$/) {
423: $Apache::lonhomework::type=$1;
424: &Apache::lonxml::debug("Using type of $1");
425: } else {
426: $Apache::lonhomework::type='problem';
427: &Apache::lonxml::debug("Using default type, problem, :$uri:");
428: }
1.87 albertel 429: }
1.58 www 430:
1.159 albertel 431: #added vars to the scripting enviroment
1.213 albertel 432: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.24 albertel 433: &Apache::run::run($expression,$safeeval);
1.159 albertel 434: my $status;
435: my $accessmsg;
436:
437: #should get back a <html> or the neccesary stuff to start XML/MathML
438: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
439: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
440: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
441:
442: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
443: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
444: $target eq 'tex') {
445: #handle exam checkout
446: if ($Apache::lonhomework::type eq 'exam') {
447: my $token=
448: $Apache::lonhomework::history{"resource.0.outtoken"};
449: if (($ENV{'form.doescheckout'}) && (!$token)) {
450: $token=&Apache::lonxml::maketoken();
451: $Apache::lonhomework::history{"resource.0.outtoken"}=
452: $token;
453: }
454: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 455: }
1.159 albertel 456:
457: #handle rand seed in construction space
458: my $rndseed=&setup_rndseed($safeeval);
1.162 albertel 459: my ($symb)=&Apache::lonxml::whichuser();
1.163 albertel 460: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
1.162 albertel 461: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
462: $rndseed.'" />'.
463: '<input type="submit" name="resetdata"
1.211 albertel 464: value="'.&mt('New Problem Variation').'" />'.
1.164 albertel 465: '<input type="hidden" name="username"
1.185 albertel 466: value="'.$ENV{'form.username'}.'" /> <br />';
1.162 albertel 467: }
1.159 albertel 468: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
469: push (@Apache::inputtags::status,$status);
470: my $expression='$external::datestatus="'.$status.'";';
471: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
472: &Apache::run::run($expression,$safeeval);
473: &Apache::lonxml::debug("Got $status");
474: if (( $status eq 'CLOSED' ) ||
475: ( $status eq 'UNCHECKEDOUT') ||
476: ( $status eq 'BANNED') ||
1.216 albertel 477: ( $status eq 'UNAVAILABLE') ||
478: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 479: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
480: if ( $target eq "web" ) {
481: $result.= $head_tag_start.'</head>';
482: my $msg=$body_tag_start;
483: if ($status eq 'UNAVAILABLE') {
1.211 albertel 484: $result.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.159 albertel 485: } else {
1.211 albertel 486: $result.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 487: }
1.216 albertel 488: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159 albertel 489: $msg.='The problem '.$accessmsg;
490: } elsif ($status eq 'UNCHECKEDOUT') {
491: $msg.=&checkout_msg;
492: }
493: $result.=$msg.'<br />';
494: } elsif ($target eq 'tex') {
495: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
496: if ($status eq 'UNAVAILABLE') {
1.211 albertel 497: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 498: } else {
1.211 albertel 499: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 500: }
501: }
502: } elsif ($target eq 'web') {
503: my $name= &get_resource_name($parstack,$safeeval);
1.227 albertel 504: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 505: $body_tag_start \n $form_tag_start".
1.227 albertel 506: '<input type="hidden" name="submitted" value="yes" />';
507: # create a page header and exit
508: if ($ENV{'request.state'} eq "construct") {
509: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
510: }
511: # if we are viewing someone else preserve that info
512: if (defined $ENV{'form.grade_symb'}) {
513: foreach my $field ('symb','courseid','domain','username') {
514: $result .= '<input type="hidden" name="grade_'.$field.
515: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
1.159 albertel 516: }
517: }
518: } elsif ($target eq 'tex') {
1.192 sakharuk 519: my $startminipage = '';
1.191 sakharuk 520: if (not $ENV{'form.problem_split'}=~/yes/) {
1.192 sakharuk 521: $startminipage = '\begin{minipage}{\textwidth}';
1.178 sakharuk 522: }
1.159 albertel 523: my $id = $Apache::inputtags::part;
524: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.223 sakharuk 525: my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
526: my @packages = split /,/,$packages;
527: my $allow_print_points = 0;
528: foreach my $partial_key (@packages) {
1.230 albertel 529: if ($partial_key=~m/^part_0$/) {
1.223 sakharuk 530: $allow_print_points=1;
1.159 albertel 531: }
532: }
533: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
534: $duedate = POSIX::strftime("%c",localtime($duedate));
535: my $temp_file;
536: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
537: if (-e $filename) {
538: $temp_file = Apache::File->new($filename);
539: } else {
540: $temp_file = Apache::File->new('>>'.$filename);
541: }
542: my @due_file_content = <$temp_file>;
543: my $due_file_content = $due_file_content[$#due_file_content];
544: chomp $due_file_content;
1.231 sakharuk 545: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval));
1.159 albertel 546: if ($due_file_content ne $duedate) {
547: $temp_file = Apache::File->new('>'.$filename);
548: print $temp_file "$duedate\n";
549: if (not $ENV{'request.symb'} =~ m/\.page_/) {
550: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.206 sakharuk 551: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent '.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
1.159 albertel 552: } else {
1.206 sakharuk 553: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 554: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
555: }
1.104 sakharuk 556: } else {
1.159 albertel 557: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104 sakharuk 558: }
1.101 sakharuk 559: } else {
1.159 albertel 560: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.206 sakharuk 561: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 562: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
563: } else {
564: $result .= '\vskip 1mm \\\\\\\\';
565: }
566: }
1.99 sakharuk 567: }
1.159 albertel 568: } elsif ($target eq 'edit') {
569: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
570: &problem_edit_header();
1.226 albertel 571: $Apache::lonxml::warnings_error_header=
572: &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 573: my $temp=&Apache::edit::insertlist($target,$token);
574: $result.=$temp;
575: } elsif ($target eq 'modified') {
576: $result=$token->[4];
577: $result.=&Apache::edit::handle_insert();
578: } else {
579: # page_start returned a starting result, delete it if we don't need it
580: $result = '';
1.99 sakharuk 581: }
1.159 albertel 582: return $result;
1.9 albertel 583: }
584:
585: sub end_problem {
1.159 albertel 586: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
587: my $result='';
588: my $status=$Apache::inputtags::status['-1'];
589: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
590: $target eq 'tex') {
591: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
1.232 albertel 592: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode)) {
1.159 albertel 593: # if part is zero, no <part>s existed, so we need to the grading
594: &Apache::inputtags::grade;
595: } elsif ( ($target eq 'web' || $target eq 'tex') &&
596: $Apache::inputtags::part eq '0' &&
597: $status ne 'UNCHECKEDOUT') {
598: # if part is zero, no <part>s existed, so we need show the current
599: # grading status
600: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
601: $result.= $gradestatus;
602: }
603: if (
604: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
605: ($target eq 'answer') || ($target eq 'tex')
606: ) {
1.227 albertel 607: if ($target ne 'tex' &&
608: $ENV{'form.answer_output_mode'} ne 'tex') {
609: $result.="</form></body>\n";
1.159 albertel 610: }
611: if ($target eq 'web') {
612: $result.=&Apache::lonxml::xmlend();
613: } elsif ($target eq 'tex') {
1.178 sakharuk 614: my $endminipage = '';
1.191 sakharuk 615: if (not $ENV{'form.problem_split'}=~/yes/) {
1.178 sakharuk 616: $endminipage = '\end{minipage}';
617: }
1.174 sakharuk 618: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.159 albertel 619: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.178 sakharuk 620: $result .= $endminipage.'\end{document} ';
1.159 albertel 621: } else {
622: $result .= '';
623: }
624: }
625: }
626: if ($target eq 'grade') {
627: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
628: &finalize_storage();
629: }
1.172 albertel 630: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173 albertel 631: && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172 albertel 632: $result.='</html>'; # normally we get it from xmlend, but in CSTR
633: # we always show answer mode too.
1.159 albertel 634: }
635: } elsif ($target eq 'meta') {
636: if ($Apache::inputtags::part eq '0') {
1.179 albertel 637: @Apache::inputtags::response=();
1.159 albertel 638: $result=&Apache::response::mandatory_part_meta;
639: }
1.215 albertel 640: $result.=&Apache::response::meta_part_order();
1.159 albertel 641: } elsif ($target eq 'edit') {
642: &Apache::lonxml::debug("in end_problem with $target, edit");
643: $result = &problem_edit_footer();
644: }
1.155 albertel 645:
1.177 albertel 646: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
647: &Apache::inputtags::check_for_duplicate_ids();
648: }
1.204 albertel 649:
650: &reset_problem_globals('problem');
1.159 albertel 651:
652: return $result;
1.48 albertel 653: }
654:
1.108 albertel 655:
1.48 albertel 656: sub start_library {
1.159 albertel 657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
658: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244 ! albertel 659: if ($$tagstack[0] eq 'library') {
! 660: &init_problem_globals('library');
! 661: $Apache::lonhomework::type='problem';
! 662: }
1.159 albertel 663: if ($target eq 'edit') {
664: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
665: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
666: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
667: &problem_edit_header();
668: my $temp=&Apache::edit::insertlist($target,$token);
669: $result.=$temp;
670: } elsif ($target eq 'modified') {
671: $result=$token->[4];
672: $result.=&Apache::edit::handle_insert();
673: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
674: $ENV{'request.state'} eq "construct" ) {
675: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
676: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
677: my $name=&get_resource_name($parstack,$safeeval);
678: my $rndseed=&setup_rndseed($safeeval);
679: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 680: $body_tag_start \n $form_tag_start".
1.159 albertel 681: '<input type="hidden" name="submitted" value="yes" />';
682: $result.=&problem_web_to_edit_header($rndseed);
683: }
684: return $result;
1.48 albertel 685: }
686:
687: sub end_library {
1.159 albertel 688: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
689: my $result='';
690: if ($target eq 'edit') {
691: $result=&problem_edit_footer();
692: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
693: $ENV{'request.state'} eq "construct") {
694: $result.='</form></body>'.&Apache::lonxml::xmlend();
695: }
1.204 albertel 696: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 697: return $result;
1.197 www 698: }
699:
700: sub start_definetag {
701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
702:
703: my $result;
704:
705: my $name = $token->[2]->{'name'};
706: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
707: if ($name=~/^\//) {
708: $result=
709: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
710: } else {
711: $result=
712: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
713: }
714: $skip=~s/\</\<\;/gs;
715: $skip=~s/\>/\>\;/gs;
716: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
717: return $result;
718: }
719:
720: sub end_definetag {
721: return '';
1.1 albertel 722: }
723:
724: sub start_block {
1.201 albertel 725: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 726:
727: my $result;
1.1 albertel 728:
1.160 albertel 729: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 730: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 731: my $code = $token->[2]->{'condition'};
1.201 albertel 732: if (defined($code)) {
1.137 albertel 733: if (!$Apache::lonxml::default_homework_loaded) {
734: &Apache::lonxml::default_homework_load($safeeval);
735: }
1.131 albertel 736: $result = &Apache::run::run($code,$safeeval);
737: &Apache::lonxml::debug("block :$code: returned :$result:");
738: } else {
739: $result='1';
740: }
741: if ( ! $result ) {
1.201 albertel 742: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 743: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
744: }
745: $result='';
746: } elsif ($target eq 'edit') {
747: $result .=&Apache::edit::tag_start($target,$token);
748: $result .=&Apache::edit::text_arg('Test Condition:','condition',
749: $token,40);
750: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
751: } elsif ($target eq 'modified') {
752: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
753: $safeeval,'condition');
754: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 755: }
1.131 albertel 756: return $result;
1.1 albertel 757: }
758:
759: sub end_block {
1.167 www 760: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
761: my $result;
762: if ($target eq "edit") {
763: $result.= &Apache::edit::tag_end($target,$token,'');
764: }
765: return $result;
766: }
767:
768: sub start_languageblock {
1.201 albertel 769: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 770:
771: my $result;
772:
773: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
774: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 775: my $include = $token->[2]->{'include'};
776: my $exclude = $token->[2]->{'exclude'};
777: my %languages=&Apache::loncommon::display_languages();
778: $result='1';
779: if ($include) {
780: $result='';
781: foreach (split(/\,/,$include)) {
782: if ($languages{$_}) { $result='1'; }
783: }
784: }
785: if ($exclude) {
786: foreach (split(/\,/,$exclude)) {
787: if ($languages{$_}) { $result='0'; }
788: }
789: }
790: if ( ! $result ) {
791: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
792: $style);
793: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
794: }
795: $result='';
1.167 www 796: } elsif ($target eq 'edit') {
797: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 798: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 799: $token,40);
1.211 albertel 800: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 801: $token,40);
802: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
803: } elsif ($target eq 'modified') {
804: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 805: $safeeval,'include',
806: 'exclude');
1.167 www 807: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
808: }
809: return $result;
810: }
811:
812: sub end_languageblock {
1.170 www 813: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
814: my $result;
1.201 albertel 815: if ($target eq "edit") {
1.170 www 816: $result.= &Apache::edit::tag_end($target,$token,'');
817: }
818: return $result;
819: }
820:
821: sub start_instructorcomment {
1.201 albertel 822: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 823:
824: my $result;
825:
826: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
827: $target eq 'tex' || $target eq 'analyze') {
828: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
829: if ( ! $result ) {
1.201 albertel 830: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
831: $parser,$style);
1.170 www 832: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
833: }
834: $result='';
835: } elsif ($target eq 'edit') {
836: $result .=&Apache::edit::tag_start($target,$token);
837: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
838: }
839: return $result;
840: }
841:
842: sub end_instructorcomment {
1.159 albertel 843: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 844: my $result;
845: if ($target eq "edit") {
846: $result.= &Apache::edit::tag_end($target,$token,'');
847: }
848: return $result;
1.4 tsai 849: }
850:
851: sub start_while {
1.159 albertel 852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
853:
1.160 albertel 854: my $result;
1.161 albertel 855: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 856: $target eq 'tex' || $target eq 'analyze') {
857: my $code = $token->[2]->{'condition'};
1.4 tsai 858:
1.160 albertel 859: push( @Apache::structuretags::whileconds, $code);
860: if (!$Apache::lonxml::default_homework_loaded) {
861: &Apache::lonxml::default_homework_load($safeeval);
862: }
863: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 864: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 865: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 866: push( @Apache::structuretags::whileline, $token->[5]);
867: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 868: if ( $result ) {
869: &Apache::lonxml::newparser($parser,\$bodytext);
870: }
871: } elsif ($target eq 'edit') {
872: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 873: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 874: $token,40);
875: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
876: } elsif ($target eq 'modified') {
877: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
878: $safeeval,'condition');
879: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 880: }
1.160 albertel 881: return $result;
1.4 tsai 882: }
883:
884: sub end_while {
1.159 albertel 885: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 886: my $result;
887:
888: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
889: $target eq 'tex' || $target eq 'analyze') {
890: my $code = pop(@Apache::structuretags::whileconds);
891: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 892: my $line = pop(@Apache::structuretags::whileline);
893: my $return = &Apache::run::run($code,$safeeval);
894: my $starttime=time;
895: my $error=0;
896: while ($return) {
897: if (time-$starttime >
898: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
899: $return = 0; $error=1; next;
900: }
901: $result.=&Apache::scripttag::xmlparse($bodytext);
902: $return = &Apache::run::run($code,$safeeval);
903: }
904: if ($error) {
1.211 albertel 905: &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 906: }
907: } elsif ($target eq "edit") {
908: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 909: }
1.160 albertel 910: return $result;
1.1 albertel 911: }
1.6 tsai 912:
1.160 albertel 913: # <randomlist show="1">
1.6 tsai 914: # <tag1>..</tag1>
915: # <tag2>..</tag2>
916: # <tag3>..</tag3>
1.160 albertel 917: # ...
1.6 tsai 918: # </randomlist>
919: sub start_randomlist {
1.159 albertel 920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
921: my $result;
922: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
923: $target eq 'tex' || $target eq 'analyze') {
924: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
925: my $b_parser= HTML::TokeParser->new(\$body);
926: my $b_tok;
927: my @randomlist;
928: my $list_item;
929: while($b_tok = $b_parser->get_token() ) {
930: if($b_tok->[0] eq 'S') { # start tag
931: # get content of the tag until matching end tag
932: # get all text upto the matching tag
933: # and push the content into @randomlist
934: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
935: $b_parser);
936: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
937: push(@randomlist,$list_item);
938: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
939: # $list_item</b>";
940: }
941: if($b_tok->[0] eq 'T') { # text
942: # what to do with text in between tags?
943: # print "<b>TEXT $b_tok->[1]</b><br />";
944: }
945: # if($b_tok->[0] eq 'E') { # end tag, should not happen
946: # print "<b>END-TAG $b_tok->[1]</b><br />";
947: # }
948: }
949: my @idx_arr = (0 .. $#randomlist);
950: &Apache::structuretags::shuffle(\@idx_arr);
951: my $bodytext = '';
952: my $show=$#randomlist;
953: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
954: $showarg--;
955: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
956: for(0 .. $show) {
957: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
958: }
959: &Apache::lonxml::newparser($parser,\$bodytext);
960: } elsif ($target eq 'edit' ) {
961: $result .=&Apache::edit::tag_start($target,$token);
962: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
963: $token,5);
964: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
965: } elsif ($target eq 'modified' ) {
966: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
967: $safeeval,'show');
968: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
969: }
970: return $result;
1.7 tsai 971: }
972:
973: sub shuffle {
974: my $a=shift;
975: my $i;
1.70 albertel 976: if (defined(@$a)) {
1.159 albertel 977: &Apache::response::setrandomnumber();
978: for($i=@$a;--$i;) {
979: my $j=int(&Math::Random::random_uniform() * ($i+1));
980: next if $i == $j;
981: @$a[$i,$j] = @$a[$j,$i];
982: }
1.7 tsai 983: }
1.6 tsai 984: }
985:
986: sub end_randomlist {
1.159 albertel 987: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
988: my $result;
989: if ($target eq 'edit' ) {
990: $result=&Apache::edit::tag_end($target,$token,
991: 'End Randomly Parsed Block');
992: }
993: return $result;
1.6 tsai 994: }
995:
1.11 albertel 996: sub start_part {
1.159 albertel 997: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
998: my $result='';
999: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1000: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1001: $Apache::inputtags::part=$id;
1.177 albertel 1002: push(@Apache::inputtags::partlist,$id);
1003: @Apache::inputtags::response=();
1.159 albertel 1004: @Apache::inputtags::previous=();
1005: @Apache::inputtags::previous_version=();
1.241 albertel 1006: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1007: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.214 albertel 1008: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.209 albertel 1009: &Apache::run::run($expression,$safeeval);
1.159 albertel 1010:
1011: if ($target eq 'meta') {
1.224 www 1012: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1013: return &Apache::response::mandatory_part_meta.
1014: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1015: } elsif ($target eq 'web' || $target eq 'grade' ||
1016: $target eq 'answer' || $target eq 'tex') {
1017: if ($hidden) {
1018: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1019: } else {
1020: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1021: push (@Apache::inputtags::status,$status);
1022: my $expression='$external::datestatus="'.$status.'";';
1023: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1024: &Apache::run::run($expression,$safeeval);
1.240 albertel 1025: if ($ENV{'request.state'} eq 'construct') {
1.241 albertel 1026: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1027: }
1.216 albertel 1028: if (( $status eq 'CLOSED' ) ||
1029: ( $status eq 'UNCHECKEDOUT') ||
1030: ( $status eq 'BANNED') ||
1031: ( $status eq 'UNAVAILABLE') ||
1032: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1033: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1034: if ( $target eq "web" ) {
1.211 albertel 1035: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1036: } elsif ( $target eq 'tex' ) {
1.195 sakharuk 1037: if (not $ENV{'form.problem_split'}=~/yes/) {
1.211 albertel 1038: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1039: } else {
1.211 albertel 1040: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1041: }
1.159 albertel 1042: }
1043: } else {
1044: if ($target eq 'tex') {
1.195 sakharuk 1045: if (not $ENV{'form.problem_split'}=~/yes/) {
1046: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1047: }
1.159 albertel 1048: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230 albertel 1049: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222 sakharuk 1050: my @allkeys = split /,/,$allkeys;
1051: my $allow_print_points = 0;
1052: foreach my $partial_key (@allkeys) {
1.230 albertel 1053: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1054: if ($1 ne '0') {$allow_print_points=1;}
1055: }
1056: }
1057: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1058: } elsif ($target eq 'web') {
1059: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1060: }
1061: }
1062: }
1063: } elsif ($target eq 'edit') {
1064: $result.=&Apache::edit::tag_start($target,$token);
1065: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1066: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1067: ' '.
1068: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1069: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1070: } elsif ($target eq 'modified') {
1071: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1072: $safeeval,'id','display');
1.159 albertel 1073: if ($constructtag) {
1.225 albertel 1074: #limiting ids to only letters numbers, and space
1.224 www 1075: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1076: $result = &Apache::edit::rebuild_tag($token);
1077: $result.=&Apache::edit::handle_insert();
1078: }
1079: }
1080: return $result;
1.11 albertel 1081: }
1082:
1083: sub end_part {
1.159 albertel 1084: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1085: &Apache::lonxml::debug("in end_part $target ");
1086: my $status=$Apache::inputtags::status['-1'];
1087: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1088: my $result='';
1089: if ( $target eq 'meta' ) {
1090: $result='';
1.232 albertel 1091: } elsif ($target eq 'grade' &&
1092: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1093: !$hidden) {
1.159 albertel 1094: $result=&Apache::inputtags::grade;
1095: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1096: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1097: $target);
1.212 albertel 1098: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1099: $gradestatus='';
1100: }
1.159 albertel 1101: $result=$gradestatus;
1.181 albertel 1102: } elsif ($target eq 'edit') {
1103: $result=&Apache::edit::end_table();
1.159 albertel 1104: }
1105: pop @Apache::inputtags::status;
1106: $Apache::inputtags::part='';
1107: return $result;
1.11 albertel 1108: }
1.1 albertel 1109:
1.25 albertel 1110: sub start_preduedate {
1.159 albertel 1111: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1112: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1113: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159 albertel 1114: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1115: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1116: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1117: &Apache::lonxml::get_all_text("/preduedate",$parser);
1118: }
1.24 albertel 1119: }
1.159 albertel 1120: return '';
1.24 albertel 1121: }
1122:
1.25 albertel 1123: sub end_preduedate {
1.159 albertel 1124: return '';
1.24 albertel 1125: }
1126:
1.25 albertel 1127: sub start_postanswerdate {
1.159 albertel 1128: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1129: if ($target eq 'web' || $target eq 'grade') {
1.159 albertel 1130: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1131: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1132: }
1133: } elsif ($target eq 'tex') {
1.234 albertel 1134: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1135: }
1136: return '';
1.24 albertel 1137: }
1138:
1.25 albertel 1139: sub end_postanswerdate {
1.159 albertel 1140: return '';
1.24 albertel 1141: }
1142:
1.25 albertel 1143: sub start_notsolved {
1.159 albertel 1144: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1145: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1146: $target eq 'tex') {
1147: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1148: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1149: if ($gradestatus =~ /^correct/ &&
1150: &Apache::response::show_answer()) {
1.159 albertel 1151: &Apache::lonxml::debug("skipping");
1152: &Apache::lonxml::get_all_text("/notsolved",$parser);
1153: }
1.24 albertel 1154: }
1.159 albertel 1155: return '';
1.24 albertel 1156: }
1157:
1.25 albertel 1158: sub end_notsolved {
1.159 albertel 1159: return '';
1.24 albertel 1160: }
1161:
1162: sub start_solved {
1.159 albertel 1163: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1164: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1165: $target eq 'tex') {
1166: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1167: if ($gradestatus !~ /^correct/ ||
1168: !&Apache::response::show_answer()) {
1.159 albertel 1169: &Apache::lonxml::get_all_text("/solved",$parser);
1170: }
1.24 albertel 1171: }
1.159 albertel 1172: return '';
1.24 albertel 1173: }
1174:
1175: sub end_solved {
1.159 albertel 1176: return '';
1.24 albertel 1177: }
1.34 albertel 1178:
1179: sub start_startouttext {
1.159 albertel 1180: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1181: my @result=(''.'');
1182: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1183: return (@result);
1.34 albertel 1184: }
1.159 albertel 1185:
1.34 albertel 1186: sub end_startouttext {
1.159 albertel 1187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1188: my $result='';
1189: my $text='';
1190:
1191: if ($target eq 'edit') {
1192: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1193: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1194: <td>".&mt('Delete:').
1.159 albertel 1195: &Apache::edit::deletelist($target,$token)
1196: ."</td>
1.42 albertel 1197: <td>".
1.159 albertel 1198: &Apache::edit::insertlist($target,$token).
1199: &Apache::edit::end_row().
1200: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1201: . &Apache::loncommon::helpLatexCheatsheet () .
1.159 albertel 1202: &Apache::edit::editfield($token->[1],$text,"",80,4);
1203: }
1204: if ($target eq 'modified') {
1.219 albertel 1205: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1206: }
1207: if ($target eq 'tex') {
1208: $result .= '\noindent ';
1209: }
1210: return $result;
1.34 albertel 1211: }
1.159 albertel 1212:
1.34 albertel 1213: sub start_endouttext {
1.159 albertel 1214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1215: my $result='';
1216: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1217: if ($target eq "modified") {
1218: $result='<endouttext />'.
1219: &Apache::edit::handle_insertafter('startouttext'); }
1220: return $result;
1.34 albertel 1221: }
1.159 albertel 1222:
1.34 albertel 1223: sub end_endouttext {
1.159 albertel 1224: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1225: my @result=('','');
1226: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1227: return (@result);
1.34 albertel 1228: }
1.159 albertel 1229:
1.45 albertel 1230: sub delete_startouttext {
1.159 albertel 1231: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1232: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1233: my $text=$$parser['-1']->get_text("/endouttext");
1234: my $ntoken=$$parser['-1']->get_token();
1235: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1236: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1237: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1238: # they did the last time round
1239: &Apache::lonxml::increasedepth($ntoken);
1240: &Apache::lonxml::decreasedepth($ntoken);
1241: return 1;
1.193 www 1242: }
1243:
1244: sub start_simpleeditbutton {
1245: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1246: my $result='';
1247: if (($target eq 'web') &&
1248: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220 www 1249: my $url=$ENV{'request.noversionuri'};
1.193 www 1250: $url=~s/\?.*$//;
1.194 www 1251: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211 albertel 1252: '<a href="'.$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 1253: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1254: }
1255: return $result;
1256: }
1257:
1258: sub end_simpleeditbutton {
1259: return '';
1.45 albertel 1260: }
1.34 albertel 1261:
1.1 albertel 1262: 1;
1263: __END__
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