Annotation of loncom/homework/structuretags.pm, revision 1.248
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.248 ! albertel 4: # $Id: structuretags.pm,v 1.247 2004/05/04 19:32:28 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 {
1.248 ! albertel 43: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
1.10 albertel 44: }
45:
46: sub start_web {
1.159 albertel 47: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200 albertel 48: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
49: if ($target eq 'web') {
50: return $bodytext;
1.159 albertel 51: }
52: return '';
1.10 albertel 53: }
54:
55: sub end_web {
1.44 ng 56: return '';
1.10 albertel 57: }
58:
59: sub start_tex {
1.159 albertel 60: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198 sakharuk 61: my $result='';
1.200 albertel 62: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
63: if ($target eq 'tex') {
64: return $bodytext.' ';
1.159 albertel 65: }
1.198 sakharuk 66: return $result;;
1.10 albertel 67: }
68:
69: sub end_tex {
1.44 ng 70: return '';
1.9 albertel 71: }
72:
1.48 albertel 73: sub page_start {
1.159 albertel 74: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
75: my %found;
1.207 albertel 76: foreach my $taginside (@$tagstack) {
1.159 albertel 77: foreach my $taglookedfor ('html','body','form') {
78: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
79: }
80: }
81:
82: my $result;
83: my $head_tag_start;
84: if (!defined($found{'html'})) {
85: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
86: $parstack,$parser,$safeeval);
1.218 albertel 87: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
1.159 albertel 88: }
89: my $body_tag_start;
90: if (!defined($found{'body'})) {
91: $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
92: 'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
93: my $background=&Apache::lonxml::get_param('background',$parstack,
94: $safeeval);
1.199 www 95: if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
1.159 albertel 96: if ($background) {
97: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
98: $background;
99: $body_tag_start.='background="'.$background.'" ';
100: } else {
101: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
102: $safeeval);
1.199 www 103: if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
1.159 albertel 104: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
105: } else {
106: $body_tag_start.='bgcolor="#ffffff"';
107: }
1.199 www 108: }
109: if ($ENV{'browser.fontenhance'} eq 'on') {
110: $body_tag_start.=' style="font-size: x-large;" ';
1.159 albertel 111: }
112: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
113: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
1.165 albertel 114: my ($symb,undef,undef,undef,$publicuser)=
115: &Apache::lonxml::whichuser();
116: if ($symb eq '' && !$publicuser) {
1.159 albertel 117: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
1.211 albertel 118: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
1.159 albertel 119: $body_tag_start.=$help;
120: }
121: }
1.245 albertel 122: $body_tag_start.=&Apache::lonxml::message_location();
1.159 albertel 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();
1.247 albertel 155: if ($ENV{'request.state'} eq "construct" || $symb eq '' ||
156: $Apache::lonhomework::history{'resource.CODE'}) {
1.159 albertel 157: $rndseed=$ENV{'form.rndseed'};
158: if (!$rndseed) {
1.162 albertel 159: $rndseed=$Apache::lonhomework::history{'rndseed'};
160: if (!$rndseed) {
161: $rndseed=time;
162: }
1.237 albertel 163: $ENV{'form.rndseed'}=$rndseed;
1.162 albertel 164: }
1.210 albertel 165: if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
166: $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 167: srand(time);
168: $rndseed=int(rand(2100000000));
1.159 albertel 169: $ENV{'form.rndseed'}=$rndseed;
1.180 albertel 170: delete($ENV{'form.resetdata'});
171: delete($ENV{'form.newrandomization'});
1.159 albertel 172: }
1.187 albertel 173: if (defined($rndseed) && $rndseed ne int($rndseed)) {
174: $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
175: }
1.247 albertel 176: if ($Apache::lonhomework::history{'resource.CODE'}) {
177: $rndseed=&Apache::lonnet::rndseed();
178: }
1.221 albertel 179: if ($safeeval) {
180: &Apache::lonxml::debug("Setting rndseed to $rndseed");
181: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
182: }
1.159 albertel 183: }
184: return $rndseed;
1.105 albertel 185: }
186:
187: sub problem_edit_header {
1.159 albertel 188: return '<input type="hidden" name="submitted" value="edit" />
1.210 albertel 189: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 190: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
191: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
192: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
193: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
194: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.229 www 195: &Apache::loncommon::help_open_topic('Problem_Editor_XML_Index',
196: 'Problem Editing Help').'</td><td>'.
197: &Apache::loncommon::help_open_faq(5).
198: &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>'.
1.228 www 199: '<table border="0"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 200: }
201:
202: sub problem_edit_footer {
1.210 albertel 203: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
204: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />';
1.105 albertel 205: }
206:
1.235 albertel 207: sub option {
208: my ($value,$name) = @_;
209: my $result ="<option value='".$value."' ";
210: if ($ENV{'form.'.$name} eq $value) {
211: $result.=" selected='on' ";
212: }
213: $result.='>';
214: return $result;
215: }
216:
1.105 albertel 217: sub problem_web_to_edit_header {
1.159 albertel 218: my ($rndseed)=@_;
1.210 albertel 219: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
1.243 matthew 220: <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
221: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
222: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
223: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 224: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.175 albertel 225: <input type="text" name="rndseed" width="10" value="'.
226: $rndseed.'"
227: onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.105 albertel 228: <input type="checkbox" name="showallfoils" ';
1.159 albertel 229: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
1.228 www 230: $result.= ' />'.&mt(' Show All Foils').
231: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
232: '<hr />';
1.235 albertel 233: $result.="
234: <nobr>
235: Problem Status:
236: <select name='problemstate'>
237: <option name=''></option>
238: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
239: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
240: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
241: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
242: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
243: </select>
244: </nobr>
245: <nobr>
246: Problem Type:
247: <select name='problemtype'>
248: <option name=''></option>
1.242 albertel 249: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
250: ".&option('problem','problemtype').&mt("Homework problem")."</option>
251: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 252: </select>
253: </nobr>
254: <nobr>
255: Feedback Mode:
256: <select name='problemstatus'>
257: <option value=''></option>
1.242 albertel 258: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
259: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 260: </select>
261: </nobr>
1.242 albertel 262: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 263: <hr />";
1.159 albertel 264: my $numtoanalyze=$ENV{'form.numtoanalyze'};
1.176 albertel 265: if (!$numtoanalyze) { $numtoanalyze=20; }
1.210 albertel 266: $result.= '<input type="submit" name="problemmode" value='.
267: &mt('"Calculate answers').'" /> for
1.136 albertel 268: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 269: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
270: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 271: '',undef,undef,300).
1.210 albertel 272: '<hr />';
1.159 albertel 273: return $result;
1.48 albertel 274: }
275:
1.65 albertel 276: sub initialize_storage {
1.159 albertel 277: %Apache::lonhomework::results=();
1.162 albertel 278: %Apache::lonhomework::history=();
1.159 albertel 279: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 280: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
1.159 albertel 281: %Apache::lonhomework::history=
282: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
283: my ($temp)=keys %Apache::lonhomework::history ;
284: &Apache::lonxml::debug("Return message of $temp");
285: } else {
286: %Apache::lonhomework::history=
287: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
288: }
289: #ignore error conditions
1.67 albertel 290: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 291: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 292: }
293:
294: # -------------------------------------------------------------finalize_storage
295: # Stores away the result has to a student's environment
296: # checks form.grade_ for specific values, other wises stores
297: # to the running users environment
298: sub finalize_storage {
1.159 albertel 299: my $result;
300: my ($temp) = keys %Apache::lonhomework::results;
301: if ( $temp ne '' ) {
302: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 303: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
304: $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};
1.159 albertel 305: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
306: $ENV{'request.uri'},'',$domain,$name);
307: &Apache::lonxml::debug('Construct Store return message:'.$result);
308: } else {
309: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
310: $symb,$courseid,$domain,$name);
311: &Apache::lonxml::debug('Store return message:'.$result);
312: }
1.67 albertel 313: }
1.159 albertel 314: return $result;
1.65 albertel 315: }
316:
317: sub checkout_msg {
1.211 albertel 318: my %lt=&Apache::lonlocal::texthash(
319: 'resource'=>'The resource needs to be checked out',
320: 'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
321: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
322: 'checkout'=>'Check out Exam for Viewing',
323: 'checkout?'=>'Check out Exam?');
1.159 albertel 324: return (<<ENDCHECKOUT);
1.211 albertel 325: <h2>$lt{'resource'}</h2>
326: <p>$lt{'id_expln'}</p>
327: <font color="red">
328: <p>$lt{'warning'}</p>
1.91 albertel 329: </font>
330: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
331: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 332: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 333: </form>
334: ENDCHECKOUT
335: }
336:
1.204 albertel 337: sub init_problem_globals {
338: my ($type)=@_;
339: #initialize globals
340: if ($type eq 'problem') {
341: $Apache::inputtags::part='0';
342: @Apache::inputtags::partlist=('0');
1.241 albertel 343:
344: $Apache::lonhomework::problemstatus=&get_problem_status('0')
1.204 albertel 345: } else {
346: $Apache::inputtags::part='';
347: @Apache::inputtags::partlist=();
348: $Apache::lonhomework::problemstatus='';
349: }
350: @Apache::inputtags::responselist = ();
351: @Apache::inputtags::importlist = ();
352: @Apache::inputtags::previous=();
353: @Apache::inputtags::previous_version=();
354: $Apache::structuretags::printanswer='No';
355: @Apache::structuretags::whileconds=();
356: @Apache::structuretags::whilebody=();
357: @Apache::structuretags::whileline=();
358: $Apache::lonhomework::scantronmode=0;
359: undef($Apache::lonhomework::name);
360:
361: }
362:
363: sub reset_problem_globals {
364: my ($type)=@_;
365: undef(%Apache::lonhomework::history);
366: undef(%Apache::lonhomework::results);
367: undef($Apache::inputtags::part);
1.208 albertel 368: #don't undef this, lonhomework.pm takes care of this, we use this to
369: #detect if we try to do 2 problems in one file
370: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 371: undef($Apache::lonhomework::name);
372: }
373:
1.241 albertel 374: sub set_problem_state {
1.240 albertel 375: my ($part)=@_;
376: if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
377: $Apache::lonhomework::history{"resource.$part.solved"}=
378: 'correct_by_student';
379: }
380: }
381:
1.241 albertel 382: sub get_problem_status {
383: my ($part)=@_;
384: my $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
385: &Apache::lonxml::debug("problem status for $part is $problem_status");
386: &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
387: if ($ENV{'request.state'} eq 'construct' &&
388: defined($ENV{'form.problemstatus'})) {
389: $problem_status=$ENV{'form.problemstatus'};
390: }
391: return $problem_status;
392: }
393:
1.9 albertel 394: sub start_problem {
1.159 albertel 395: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 396:
1.184 albertel 397: if ( $Apache::inputtags::part ne '' ||
398: $Apache::lonhomework::parsing_a_problem) {
399: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
400: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159 albertel 401: return '';
402: }
1.184 albertel 403:
404: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 405: &init_problem_globals('problem');
1.166 albertel 406:
407: if (defined($ENV{'scantron.maxquest'})) {
408: $Apache::lonhomework::scantronmode=1;
409: }
1.161 albertel 410:
1.246 albertel 411: &initialize_storage();
1.159 albertel 412: if ($target ne 'analyze') {
413: if ($target eq 'web') {
414: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238 albertel 415: }
1.241 albertel 416: if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159 albertel 417: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.237 albertel 418: if (($ENV{'request.state'} eq 'construct') &&
419: defined($ENV{'form.problemtype'})) {
420: $Apache::lonhomework::type=$ENV{'form.problemtype'};
421: }
1.240 albertel 422: &Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159 albertel 423: }
1.164 albertel 424: if ($Apache::lonhomework::type eq '' ) {
1.159 albertel 425: my $uri=$ENV{'request.uri'};
426: if ($uri=~/\.(\w+)$/) {
427: $Apache::lonhomework::type=$1;
428: &Apache::lonxml::debug("Using type of $1");
429: } else {
430: $Apache::lonhomework::type='problem';
431: &Apache::lonxml::debug("Using default type, problem, :$uri:");
432: }
1.87 albertel 433: }
1.58 www 434:
1.159 albertel 435: #added vars to the scripting enviroment
1.213 albertel 436: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 ! albertel 437: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 438: &Apache::run::run($expression,$safeeval);
1.159 albertel 439: my $status;
440: my $accessmsg;
441:
442: #should get back a <html> or the neccesary stuff to start XML/MathML
443: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
444: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
445: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
446:
447: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
448: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
449: $target eq 'tex') {
450: #handle exam checkout
451: if ($Apache::lonhomework::type eq 'exam') {
452: my $token=
453: $Apache::lonhomework::history{"resource.0.outtoken"};
454: if (($ENV{'form.doescheckout'}) && (!$token)) {
455: $token=&Apache::lonxml::maketoken();
456: $Apache::lonhomework::history{"resource.0.outtoken"}=
457: $token;
458: }
459: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 460: }
1.159 albertel 461:
462: #handle rand seed in construction space
463: my $rndseed=&setup_rndseed($safeeval);
1.162 albertel 464: my ($symb)=&Apache::lonxml::whichuser();
1.163 albertel 465: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
1.162 albertel 466: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
467: $rndseed.'" />'.
468: '<input type="submit" name="resetdata"
1.211 albertel 469: value="'.&mt('New Problem Variation').'" />'.
1.164 albertel 470: '<input type="hidden" name="username"
1.185 albertel 471: value="'.$ENV{'form.username'}.'" /> <br />';
1.162 albertel 472: }
1.159 albertel 473: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
474: push (@Apache::inputtags::status,$status);
475: my $expression='$external::datestatus="'.$status.'";';
476: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
477: &Apache::run::run($expression,$safeeval);
478: &Apache::lonxml::debug("Got $status");
479: if (( $status eq 'CLOSED' ) ||
480: ( $status eq 'UNCHECKEDOUT') ||
481: ( $status eq 'BANNED') ||
1.216 albertel 482: ( $status eq 'UNAVAILABLE') ||
483: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 484: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
485: if ( $target eq "web" ) {
486: $result.= $head_tag_start.'</head>';
487: my $msg=$body_tag_start;
488: if ($status eq 'UNAVAILABLE') {
1.245 albertel 489: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.159 albertel 490: } else {
1.245 albertel 491: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 492: }
1.216 albertel 493: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159 albertel 494: $msg.='The problem '.$accessmsg;
495: } elsif ($status eq 'UNCHECKEDOUT') {
496: $msg.=&checkout_msg;
497: }
498: $result.=$msg.'<br />';
499: } elsif ($target eq 'tex') {
500: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
501: if ($status eq 'UNAVAILABLE') {
1.211 albertel 502: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 503: } else {
1.211 albertel 504: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 505: }
506: }
507: } elsif ($target eq 'web') {
508: my $name= &get_resource_name($parstack,$safeeval);
1.227 albertel 509: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 510: $body_tag_start \n $form_tag_start".
1.227 albertel 511: '<input type="hidden" name="submitted" value="yes" />';
512: # create a page header and exit
513: if ($ENV{'request.state'} eq "construct") {
514: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
515: }
516: # if we are viewing someone else preserve that info
517: if (defined $ENV{'form.grade_symb'}) {
518: foreach my $field ('symb','courseid','domain','username') {
519: $result .= '<input type="hidden" name="grade_'.$field.
520: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
1.159 albertel 521: }
522: }
523: } elsif ($target eq 'tex') {
1.192 sakharuk 524: my $startminipage = '';
1.191 sakharuk 525: if (not $ENV{'form.problem_split'}=~/yes/) {
1.192 sakharuk 526: $startminipage = '\begin{minipage}{\textwidth}';
1.178 sakharuk 527: }
1.159 albertel 528: my $id = $Apache::inputtags::part;
529: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.223 sakharuk 530: my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
531: my @packages = split /,/,$packages;
532: my $allow_print_points = 0;
533: foreach my $partial_key (@packages) {
1.230 albertel 534: if ($partial_key=~m/^part_0$/) {
1.223 sakharuk 535: $allow_print_points=1;
1.159 albertel 536: }
537: }
538: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
539: $duedate = POSIX::strftime("%c",localtime($duedate));
540: my $temp_file;
541: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
542: if (-e $filename) {
543: $temp_file = Apache::File->new($filename);
544: } else {
545: $temp_file = Apache::File->new('>>'.$filename);
546: }
547: my @due_file_content = <$temp_file>;
548: my $due_file_content = $due_file_content[$#due_file_content];
549: chomp $due_file_content;
1.231 sakharuk 550: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval));
1.159 albertel 551: if ($due_file_content ne $duedate) {
552: $temp_file = Apache::File->new('>'.$filename);
553: print $temp_file "$duedate\n";
554: if (not $ENV{'request.symb'} =~ m/\.page_/) {
555: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.206 sakharuk 556: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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 557: } else {
1.206 sakharuk 558: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 559: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
560: }
1.104 sakharuk 561: } else {
1.159 albertel 562: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104 sakharuk 563: }
1.101 sakharuk 564: } else {
1.159 albertel 565: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.206 sakharuk 566: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 567: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
568: } else {
569: $result .= '\vskip 1mm \\\\\\\\';
570: }
571: }
1.99 sakharuk 572: }
1.159 albertel 573: } elsif ($target eq 'edit') {
574: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
575: &problem_edit_header();
1.226 albertel 576: $Apache::lonxml::warnings_error_header=
577: &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 578: my $temp=&Apache::edit::insertlist($target,$token);
579: $result.=$temp;
580: } elsif ($target eq 'modified') {
581: $result=$token->[4];
582: $result.=&Apache::edit::handle_insert();
583: } else {
584: # page_start returned a starting result, delete it if we don't need it
585: $result = '';
1.99 sakharuk 586: }
1.159 albertel 587: return $result;
1.9 albertel 588: }
589:
590: sub end_problem {
1.159 albertel 591: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
592: my $result='';
593: my $status=$Apache::inputtags::status['-1'];
594: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
595: $target eq 'tex') {
596: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
1.232 albertel 597: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode)) {
1.159 albertel 598: # if part is zero, no <part>s existed, so we need to the grading
599: &Apache::inputtags::grade;
600: } elsif ( ($target eq 'web' || $target eq 'tex') &&
601: $Apache::inputtags::part eq '0' &&
602: $status ne 'UNCHECKEDOUT') {
603: # if part is zero, no <part>s existed, so we need show the current
604: # grading status
605: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
606: $result.= $gradestatus;
607: }
608: if (
609: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
610: ($target eq 'answer') || ($target eq 'tex')
611: ) {
1.227 albertel 612: if ($target ne 'tex' &&
613: $ENV{'form.answer_output_mode'} ne 'tex') {
614: $result.="</form></body>\n";
1.159 albertel 615: }
616: if ($target eq 'web') {
617: $result.=&Apache::lonxml::xmlend();
618: } elsif ($target eq 'tex') {
1.178 sakharuk 619: my $endminipage = '';
1.191 sakharuk 620: if (not $ENV{'form.problem_split'}=~/yes/) {
1.178 sakharuk 621: $endminipage = '\end{minipage}';
622: }
1.174 sakharuk 623: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.159 albertel 624: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.178 sakharuk 625: $result .= $endminipage.'\end{document} ';
1.159 albertel 626: } else {
627: $result .= '';
628: }
629: }
630: }
631: if ($target eq 'grade') {
632: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
633: &finalize_storage();
634: }
1.172 albertel 635: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173 albertel 636: && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172 albertel 637: $result.='</html>'; # normally we get it from xmlend, but in CSTR
638: # we always show answer mode too.
1.159 albertel 639: }
640: } elsif ($target eq 'meta') {
641: if ($Apache::inputtags::part eq '0') {
1.179 albertel 642: @Apache::inputtags::response=();
1.159 albertel 643: $result=&Apache::response::mandatory_part_meta;
644: }
1.215 albertel 645: $result.=&Apache::response::meta_part_order();
1.159 albertel 646: } elsif ($target eq 'edit') {
647: &Apache::lonxml::debug("in end_problem with $target, edit");
648: $result = &problem_edit_footer();
649: }
1.155 albertel 650:
1.177 albertel 651: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
652: &Apache::inputtags::check_for_duplicate_ids();
653: }
1.204 albertel 654:
655: &reset_problem_globals('problem');
1.159 albertel 656:
657: return $result;
1.48 albertel 658: }
659:
1.108 albertel 660:
1.48 albertel 661: sub start_library {
1.159 albertel 662: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
663: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244 albertel 664: if ($$tagstack[0] eq 'library') {
665: &init_problem_globals('library');
666: $Apache::lonhomework::type='problem';
667: }
1.159 albertel 668: if ($target eq 'edit') {
669: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
670: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
671: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
672: &problem_edit_header();
673: my $temp=&Apache::edit::insertlist($target,$token);
674: $result.=$temp;
675: } elsif ($target eq 'modified') {
676: $result=$token->[4];
677: $result.=&Apache::edit::handle_insert();
678: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
679: $ENV{'request.state'} eq "construct" ) {
680: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
681: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
682: my $name=&get_resource_name($parstack,$safeeval);
683: my $rndseed=&setup_rndseed($safeeval);
684: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 685: $body_tag_start \n $form_tag_start".
1.159 albertel 686: '<input type="hidden" name="submitted" value="yes" />';
687: $result.=&problem_web_to_edit_header($rndseed);
688: }
689: return $result;
1.48 albertel 690: }
691:
692: sub end_library {
1.159 albertel 693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
694: my $result='';
695: if ($target eq 'edit') {
696: $result=&problem_edit_footer();
697: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
698: $ENV{'request.state'} eq "construct") {
699: $result.='</form></body>'.&Apache::lonxml::xmlend();
700: }
1.204 albertel 701: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 702: return $result;
1.197 www 703: }
704:
705: sub start_definetag {
706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
707:
708: my $result;
709:
710: my $name = $token->[2]->{'name'};
711: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
712: if ($name=~/^\//) {
713: $result=
714: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
715: } else {
716: $result=
717: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
718: }
719: $skip=~s/\</\<\;/gs;
720: $skip=~s/\>/\>\;/gs;
721: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
722: return $result;
723: }
724:
725: sub end_definetag {
726: return '';
1.1 albertel 727: }
728:
729: sub start_block {
1.201 albertel 730: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 731:
732: my $result;
1.1 albertel 733:
1.160 albertel 734: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 735: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 736: my $code = $token->[2]->{'condition'};
1.201 albertel 737: if (defined($code)) {
1.137 albertel 738: if (!$Apache::lonxml::default_homework_loaded) {
739: &Apache::lonxml::default_homework_load($safeeval);
740: }
1.131 albertel 741: $result = &Apache::run::run($code,$safeeval);
742: &Apache::lonxml::debug("block :$code: returned :$result:");
743: } else {
744: $result='1';
745: }
746: if ( ! $result ) {
1.201 albertel 747: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 748: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
749: }
750: $result='';
751: } elsif ($target eq 'edit') {
752: $result .=&Apache::edit::tag_start($target,$token);
753: $result .=&Apache::edit::text_arg('Test Condition:','condition',
754: $token,40);
755: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
756: } elsif ($target eq 'modified') {
757: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
758: $safeeval,'condition');
759: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 760: }
1.131 albertel 761: return $result;
1.1 albertel 762: }
763:
764: sub end_block {
1.167 www 765: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
766: my $result;
767: if ($target eq "edit") {
768: $result.= &Apache::edit::tag_end($target,$token,'');
769: }
770: return $result;
771: }
772:
773: sub start_languageblock {
1.201 albertel 774: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 775:
776: my $result;
777:
778: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
779: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 780: my $include = $token->[2]->{'include'};
781: my $exclude = $token->[2]->{'exclude'};
782: my %languages=&Apache::loncommon::display_languages();
783: $result='1';
784: if ($include) {
785: $result='';
786: foreach (split(/\,/,$include)) {
787: if ($languages{$_}) { $result='1'; }
788: }
789: }
790: if ($exclude) {
791: foreach (split(/\,/,$exclude)) {
792: if ($languages{$_}) { $result='0'; }
793: }
794: }
795: if ( ! $result ) {
796: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
797: $style);
798: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
799: }
800: $result='';
1.167 www 801: } elsif ($target eq 'edit') {
802: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 803: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 804: $token,40);
1.211 albertel 805: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 806: $token,40);
807: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
808: } elsif ($target eq 'modified') {
809: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 810: $safeeval,'include',
811: 'exclude');
1.167 www 812: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
813: }
814: return $result;
815: }
816:
817: sub end_languageblock {
1.170 www 818: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
819: my $result;
1.201 albertel 820: if ($target eq "edit") {
1.170 www 821: $result.= &Apache::edit::tag_end($target,$token,'');
822: }
823: return $result;
824: }
825:
826: sub start_instructorcomment {
1.201 albertel 827: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 828:
829: my $result;
830:
831: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
832: $target eq 'tex' || $target eq 'analyze') {
833: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
834: if ( ! $result ) {
1.201 albertel 835: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
836: $parser,$style);
1.170 www 837: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
838: }
839: $result='';
840: } elsif ($target eq 'edit') {
841: $result .=&Apache::edit::tag_start($target,$token);
842: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
843: }
844: return $result;
845: }
846:
847: sub end_instructorcomment {
1.159 albertel 848: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 849: my $result;
850: if ($target eq "edit") {
851: $result.= &Apache::edit::tag_end($target,$token,'');
852: }
853: return $result;
1.4 tsai 854: }
855:
856: sub start_while {
1.159 albertel 857: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
858:
1.160 albertel 859: my $result;
1.161 albertel 860: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 861: $target eq 'tex' || $target eq 'analyze') {
862: my $code = $token->[2]->{'condition'};
1.4 tsai 863:
1.160 albertel 864: push( @Apache::structuretags::whileconds, $code);
865: if (!$Apache::lonxml::default_homework_loaded) {
866: &Apache::lonxml::default_homework_load($safeeval);
867: }
868: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 869: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 870: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 871: push( @Apache::structuretags::whileline, $token->[5]);
872: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 873: if ( $result ) {
874: &Apache::lonxml::newparser($parser,\$bodytext);
875: }
876: } elsif ($target eq 'edit') {
877: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 878: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 879: $token,40);
880: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
881: } elsif ($target eq 'modified') {
882: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
883: $safeeval,'condition');
884: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 885: }
1.160 albertel 886: return $result;
1.4 tsai 887: }
888:
889: sub end_while {
1.159 albertel 890: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 891: my $result;
892:
893: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
894: $target eq 'tex' || $target eq 'analyze') {
895: my $code = pop(@Apache::structuretags::whileconds);
896: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 897: my $line = pop(@Apache::structuretags::whileline);
898: my $return = &Apache::run::run($code,$safeeval);
899: my $starttime=time;
900: my $error=0;
901: while ($return) {
902: if (time-$starttime >
903: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
904: $return = 0; $error=1; next;
905: }
906: $result.=&Apache::scripttag::xmlparse($bodytext);
907: $return = &Apache::run::run($code,$safeeval);
908: }
909: if ($error) {
1.211 albertel 910: &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 911: }
912: } elsif ($target eq "edit") {
913: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 914: }
1.160 albertel 915: return $result;
1.1 albertel 916: }
1.6 tsai 917:
1.160 albertel 918: # <randomlist show="1">
1.6 tsai 919: # <tag1>..</tag1>
920: # <tag2>..</tag2>
921: # <tag3>..</tag3>
1.160 albertel 922: # ...
1.6 tsai 923: # </randomlist>
924: sub start_randomlist {
1.159 albertel 925: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
926: my $result;
927: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
928: $target eq 'tex' || $target eq 'analyze') {
929: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
930: my $b_parser= HTML::TokeParser->new(\$body);
931: my $b_tok;
932: my @randomlist;
933: my $list_item;
934: while($b_tok = $b_parser->get_token() ) {
935: if($b_tok->[0] eq 'S') { # start tag
936: # get content of the tag until matching end tag
937: # get all text upto the matching tag
938: # and push the content into @randomlist
939: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
940: $b_parser);
941: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
942: push(@randomlist,$list_item);
943: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
944: # $list_item</b>";
945: }
946: if($b_tok->[0] eq 'T') { # text
947: # what to do with text in between tags?
948: # print "<b>TEXT $b_tok->[1]</b><br />";
949: }
950: # if($b_tok->[0] eq 'E') { # end tag, should not happen
951: # print "<b>END-TAG $b_tok->[1]</b><br />";
952: # }
953: }
954: my @idx_arr = (0 .. $#randomlist);
955: &Apache::structuretags::shuffle(\@idx_arr);
956: my $bodytext = '';
957: my $show=$#randomlist;
958: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
959: $showarg--;
960: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
961: for(0 .. $show) {
962: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
963: }
964: &Apache::lonxml::newparser($parser,\$bodytext);
965: } elsif ($target eq 'edit' ) {
966: $result .=&Apache::edit::tag_start($target,$token);
967: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
968: $token,5);
969: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
970: } elsif ($target eq 'modified' ) {
971: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
972: $safeeval,'show');
973: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
974: }
975: return $result;
1.7 tsai 976: }
977:
978: sub shuffle {
979: my $a=shift;
980: my $i;
1.70 albertel 981: if (defined(@$a)) {
1.159 albertel 982: &Apache::response::setrandomnumber();
983: for($i=@$a;--$i;) {
984: my $j=int(&Math::Random::random_uniform() * ($i+1));
985: next if $i == $j;
986: @$a[$i,$j] = @$a[$j,$i];
987: }
1.7 tsai 988: }
1.6 tsai 989: }
990:
991: sub end_randomlist {
1.159 albertel 992: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
993: my $result;
994: if ($target eq 'edit' ) {
995: $result=&Apache::edit::tag_end($target,$token,
996: 'End Randomly Parsed Block');
997: }
998: return $result;
1.6 tsai 999: }
1000:
1.11 albertel 1001: sub start_part {
1.159 albertel 1002: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1003: my $result='';
1004: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1005: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1006: $Apache::inputtags::part=$id;
1.177 albertel 1007: push(@Apache::inputtags::partlist,$id);
1008: @Apache::inputtags::response=();
1.159 albertel 1009: @Apache::inputtags::previous=();
1010: @Apache::inputtags::previous_version=();
1.241 albertel 1011: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1012: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.214 albertel 1013: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.209 albertel 1014: &Apache::run::run($expression,$safeeval);
1.159 albertel 1015:
1016: if ($target eq 'meta') {
1.224 www 1017: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1018: return &Apache::response::mandatory_part_meta.
1019: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1020: } elsif ($target eq 'web' || $target eq 'grade' ||
1021: $target eq 'answer' || $target eq 'tex') {
1022: if ($hidden) {
1023: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1024: } else {
1025: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1026: push (@Apache::inputtags::status,$status);
1027: my $expression='$external::datestatus="'.$status.'";';
1028: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1029: &Apache::run::run($expression,$safeeval);
1.240 albertel 1030: if ($ENV{'request.state'} eq 'construct') {
1.241 albertel 1031: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1032: }
1.216 albertel 1033: if (( $status eq 'CLOSED' ) ||
1034: ( $status eq 'UNCHECKEDOUT') ||
1035: ( $status eq 'BANNED') ||
1036: ( $status eq 'UNAVAILABLE') ||
1037: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1038: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1039: if ( $target eq "web" ) {
1.211 albertel 1040: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1041: } elsif ( $target eq 'tex' ) {
1.195 sakharuk 1042: if (not $ENV{'form.problem_split'}=~/yes/) {
1.211 albertel 1043: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1044: } else {
1.211 albertel 1045: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1046: }
1.159 albertel 1047: }
1048: } else {
1049: if ($target eq 'tex') {
1.195 sakharuk 1050: if (not $ENV{'form.problem_split'}=~/yes/) {
1051: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1052: }
1.159 albertel 1053: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230 albertel 1054: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222 sakharuk 1055: my @allkeys = split /,/,$allkeys;
1056: my $allow_print_points = 0;
1057: foreach my $partial_key (@allkeys) {
1.230 albertel 1058: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1059: if ($1 ne '0') {$allow_print_points=1;}
1060: }
1061: }
1062: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1063: } elsif ($target eq 'web') {
1064: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1065: }
1066: }
1067: }
1068: } elsif ($target eq 'edit') {
1069: $result.=&Apache::edit::tag_start($target,$token);
1070: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1071: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1072: ' '.
1073: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1074: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1075: } elsif ($target eq 'modified') {
1076: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1077: $safeeval,'id','display');
1.159 albertel 1078: if ($constructtag) {
1.225 albertel 1079: #limiting ids to only letters numbers, and space
1.224 www 1080: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1081: $result = &Apache::edit::rebuild_tag($token);
1082: $result.=&Apache::edit::handle_insert();
1083: }
1084: }
1085: return $result;
1.11 albertel 1086: }
1087:
1088: sub end_part {
1.159 albertel 1089: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1090: &Apache::lonxml::debug("in end_part $target ");
1091: my $status=$Apache::inputtags::status['-1'];
1092: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1093: my $result='';
1094: if ( $target eq 'meta' ) {
1095: $result='';
1.232 albertel 1096: } elsif ($target eq 'grade' &&
1097: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1098: !$hidden) {
1.159 albertel 1099: $result=&Apache::inputtags::grade;
1100: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1101: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1102: $target);
1.212 albertel 1103: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1104: $gradestatus='';
1105: }
1.159 albertel 1106: $result=$gradestatus;
1.181 albertel 1107: } elsif ($target eq 'edit') {
1108: $result=&Apache::edit::end_table();
1.159 albertel 1109: }
1110: pop @Apache::inputtags::status;
1111: $Apache::inputtags::part='';
1112: return $result;
1.11 albertel 1113: }
1.1 albertel 1114:
1.25 albertel 1115: sub start_preduedate {
1.159 albertel 1116: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1117: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1118: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159 albertel 1119: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1120: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1121: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1122: &Apache::lonxml::get_all_text("/preduedate",$parser);
1123: }
1.24 albertel 1124: }
1.159 albertel 1125: return '';
1.24 albertel 1126: }
1127:
1.25 albertel 1128: sub end_preduedate {
1.159 albertel 1129: return '';
1.24 albertel 1130: }
1131:
1.25 albertel 1132: sub start_postanswerdate {
1.159 albertel 1133: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1134: if ($target eq 'web' || $target eq 'grade') {
1.159 albertel 1135: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1136: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1137: }
1138: } elsif ($target eq 'tex') {
1.234 albertel 1139: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1140: }
1141: return '';
1.24 albertel 1142: }
1143:
1.25 albertel 1144: sub end_postanswerdate {
1.159 albertel 1145: return '';
1.24 albertel 1146: }
1147:
1.25 albertel 1148: sub start_notsolved {
1.159 albertel 1149: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1150: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1151: $target eq 'tex') {
1152: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1153: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1154: if ($gradestatus =~ /^correct/ &&
1155: &Apache::response::show_answer()) {
1.159 albertel 1156: &Apache::lonxml::debug("skipping");
1157: &Apache::lonxml::get_all_text("/notsolved",$parser);
1158: }
1.24 albertel 1159: }
1.159 albertel 1160: return '';
1.24 albertel 1161: }
1162:
1.25 albertel 1163: sub end_notsolved {
1.159 albertel 1164: return '';
1.24 albertel 1165: }
1166:
1167: sub start_solved {
1.159 albertel 1168: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1169: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1170: $target eq 'tex') {
1171: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1172: if ($gradestatus !~ /^correct/ ||
1173: !&Apache::response::show_answer()) {
1.159 albertel 1174: &Apache::lonxml::get_all_text("/solved",$parser);
1175: }
1.24 albertel 1176: }
1.159 albertel 1177: return '';
1.24 albertel 1178: }
1179:
1180: sub end_solved {
1.248 ! albertel 1181: return '';
! 1182: }
! 1183:
! 1184: sub start_problemtype {
! 1185: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 1186: my $result;
! 1187: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
! 1188: $target eq 'tex' || $target eq 'analyze') {
! 1189: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
! 1190: if (!defined($mode)) { $mode='show'; }
! 1191: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
! 1192: my $found=0;
! 1193: foreach my $type (split(',',$for)) {
! 1194: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
! 1195: }
! 1196: if ($mode eq 'show' && !$found) {
! 1197: &Apache::lonxml::get_all_text("/problemtype",$parser);
! 1198: }
! 1199: if ($mode eq 'hide' && $found) {
! 1200: &Apache::lonxml::get_all_text("/problemtype",$parser);
! 1201: }
! 1202: } elsif ($target eq 'edit') {
! 1203: $result .=&Apache::edit::tag_start($target,$token);
! 1204: $result.=&Apache::edit::select_arg('Mode:','mode',
! 1205: [['show','Show'],
! 1206: ['hide','Hide']]
! 1207: ,$token);
! 1208: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
! 1209: [ ['exam','Exam/Quiz Problem'],
! 1210: ['survey','Survey'],
! 1211: ['problem','Homework Problem'] ]
! 1212: ,$token);
! 1213: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
! 1214: } elsif ($target eq 'modified') {
! 1215: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
! 1216: $safeeval,'mode','for');
! 1217: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
! 1218: }
! 1219: return $result;
! 1220: }
! 1221:
! 1222: sub end_problemtype {
1.159 albertel 1223: return '';
1.24 albertel 1224: }
1.34 albertel 1225:
1226: sub start_startouttext {
1.159 albertel 1227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1228: my @result=(''.'');
1229: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1230: return (@result);
1.34 albertel 1231: }
1.159 albertel 1232:
1.34 albertel 1233: sub end_startouttext {
1.159 albertel 1234: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1235: my $result='';
1236: my $text='';
1237:
1238: if ($target eq 'edit') {
1239: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1240: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1241: <td>".&mt('Delete:').
1.159 albertel 1242: &Apache::edit::deletelist($target,$token)
1243: ."</td>
1.42 albertel 1244: <td>".
1.159 albertel 1245: &Apache::edit::insertlist($target,$token).
1246: &Apache::edit::end_row().
1247: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1248: . &Apache::loncommon::helpLatexCheatsheet () .
1.159 albertel 1249: &Apache::edit::editfield($token->[1],$text,"",80,4);
1250: }
1251: if ($target eq 'modified') {
1.219 albertel 1252: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1253: }
1254: if ($target eq 'tex') {
1255: $result .= '\noindent ';
1256: }
1257: return $result;
1.34 albertel 1258: }
1.159 albertel 1259:
1.34 albertel 1260: sub start_endouttext {
1.159 albertel 1261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1262: my $result='';
1263: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1264: if ($target eq "modified") {
1265: $result='<endouttext />'.
1266: &Apache::edit::handle_insertafter('startouttext'); }
1267: return $result;
1.34 albertel 1268: }
1.159 albertel 1269:
1.34 albertel 1270: sub end_endouttext {
1.159 albertel 1271: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1272: my @result=('','');
1273: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1274: return (@result);
1.34 albertel 1275: }
1.159 albertel 1276:
1.45 albertel 1277: sub delete_startouttext {
1.159 albertel 1278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1279: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1280: my $text=$$parser['-1']->get_text("/endouttext");
1281: my $ntoken=$$parser['-1']->get_token();
1282: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1283: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1284: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1285: # they did the last time round
1286: &Apache::lonxml::increasedepth($ntoken);
1287: &Apache::lonxml::decreasedepth($ntoken);
1288: return 1;
1.193 www 1289: }
1290:
1291: sub start_simpleeditbutton {
1292: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1293: my $result='';
1294: if (($target eq 'web') &&
1295: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220 www 1296: my $url=$ENV{'request.noversionuri'};
1.193 www 1297: $url=~s/\?.*$//;
1.194 www 1298: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211 albertel 1299: '<a href="'.$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 1300: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1301: }
1302: return $result;
1303: }
1304:
1305: sub end_simpleeditbutton {
1306: return '';
1.45 albertel 1307: }
1.34 albertel 1308:
1.1 albertel 1309: 1;
1310: __END__
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