Annotation of loncom/homework/structuretags.pm, revision 1.251
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.251 ! albertel 4: # $Id: structuretags.pm,v 1.250 2004/05/27 04:25:13 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 $rndseed");
1.250 albertel 181: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 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') {
1.249 albertel 596: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 597: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 598: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
599: &Apache::inputtags::grade;
600: } else {
601: # move any submission data to .hidden
602: &Apache::inputtags::hidealldata($Apache::inputtags::part);
603: }
1.159 albertel 604: } elsif ( ($target eq 'web' || $target eq 'tex') &&
605: $Apache::inputtags::part eq '0' &&
606: $status ne 'UNCHECKEDOUT') {
607: # if part is zero, no <part>s existed, so we need show the current
608: # grading status
609: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
610: $result.= $gradestatus;
611: }
612: if (
613: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
614: ($target eq 'answer') || ($target eq 'tex')
615: ) {
1.227 albertel 616: if ($target ne 'tex' &&
617: $ENV{'form.answer_output_mode'} ne 'tex') {
618: $result.="</form></body>\n";
1.159 albertel 619: }
620: if ($target eq 'web') {
621: $result.=&Apache::lonxml::xmlend();
622: } elsif ($target eq 'tex') {
1.178 sakharuk 623: my $endminipage = '';
1.191 sakharuk 624: if (not $ENV{'form.problem_split'}=~/yes/) {
1.178 sakharuk 625: $endminipage = '\end{minipage}';
626: }
1.174 sakharuk 627: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.159 albertel 628: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.178 sakharuk 629: $result .= $endminipage.'\end{document} ';
1.159 albertel 630: } else {
631: $result .= '';
632: }
633: }
634: }
635: if ($target eq 'grade') {
636: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
637: &finalize_storage();
638: }
1.172 albertel 639: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173 albertel 640: && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172 albertel 641: $result.='</html>'; # normally we get it from xmlend, but in CSTR
642: # we always show answer mode too.
1.159 albertel 643: }
644: } elsif ($target eq 'meta') {
645: if ($Apache::inputtags::part eq '0') {
1.179 albertel 646: @Apache::inputtags::response=();
1.159 albertel 647: $result=&Apache::response::mandatory_part_meta;
648: }
1.215 albertel 649: $result.=&Apache::response::meta_part_order();
1.159 albertel 650: } elsif ($target eq 'edit') {
651: &Apache::lonxml::debug("in end_problem with $target, edit");
652: $result = &problem_edit_footer();
653: }
1.155 albertel 654:
1.177 albertel 655: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
656: &Apache::inputtags::check_for_duplicate_ids();
657: }
1.204 albertel 658:
659: &reset_problem_globals('problem');
1.159 albertel 660:
661: return $result;
1.48 albertel 662: }
663:
1.108 albertel 664:
1.48 albertel 665: sub start_library {
1.159 albertel 666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
667: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244 albertel 668: if ($$tagstack[0] eq 'library') {
669: &init_problem_globals('library');
670: $Apache::lonhomework::type='problem';
671: }
1.159 albertel 672: if ($target eq 'edit') {
673: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
674: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
675: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
676: &problem_edit_header();
677: my $temp=&Apache::edit::insertlist($target,$token);
678: $result.=$temp;
679: } elsif ($target eq 'modified') {
680: $result=$token->[4];
681: $result.=&Apache::edit::handle_insert();
682: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
683: $ENV{'request.state'} eq "construct" ) {
684: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
685: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
686: my $name=&get_resource_name($parstack,$safeeval);
687: my $rndseed=&setup_rndseed($safeeval);
688: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 689: $body_tag_start \n $form_tag_start".
1.159 albertel 690: '<input type="hidden" name="submitted" value="yes" />';
691: $result.=&problem_web_to_edit_header($rndseed);
692: }
693: return $result;
1.48 albertel 694: }
695:
696: sub end_library {
1.159 albertel 697: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
698: my $result='';
699: if ($target eq 'edit') {
700: $result=&problem_edit_footer();
701: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
702: $ENV{'request.state'} eq "construct") {
703: $result.='</form></body>'.&Apache::lonxml::xmlend();
704: }
1.204 albertel 705: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 706: return $result;
1.197 www 707: }
708:
709: sub start_definetag {
710: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
711:
712: my $result;
713:
714: my $name = $token->[2]->{'name'};
715: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
716: if ($name=~/^\//) {
717: $result=
718: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
719: } else {
720: $result=
721: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
722: }
723: $skip=~s/\</\<\;/gs;
724: $skip=~s/\>/\>\;/gs;
725: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
726: return $result;
727: }
728:
729: sub end_definetag {
730: return '';
1.1 albertel 731: }
732:
733: sub start_block {
1.201 albertel 734: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 735:
736: my $result;
1.1 albertel 737:
1.160 albertel 738: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 739: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 740: my $code = $token->[2]->{'condition'};
1.201 albertel 741: if (defined($code)) {
1.137 albertel 742: if (!$Apache::lonxml::default_homework_loaded) {
743: &Apache::lonxml::default_homework_load($safeeval);
744: }
1.131 albertel 745: $result = &Apache::run::run($code,$safeeval);
746: &Apache::lonxml::debug("block :$code: returned :$result:");
747: } else {
748: $result='1';
749: }
750: if ( ! $result ) {
1.201 albertel 751: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 752: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
753: }
754: $result='';
755: } elsif ($target eq 'edit') {
756: $result .=&Apache::edit::tag_start($target,$token);
757: $result .=&Apache::edit::text_arg('Test Condition:','condition',
758: $token,40);
759: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
760: } elsif ($target eq 'modified') {
761: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
762: $safeeval,'condition');
763: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 764: }
1.131 albertel 765: return $result;
1.1 albertel 766: }
767:
768: sub end_block {
1.167 www 769: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
770: my $result;
771: if ($target eq "edit") {
772: $result.= &Apache::edit::tag_end($target,$token,'');
773: }
774: return $result;
775: }
776:
777: sub start_languageblock {
1.201 albertel 778: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 779:
780: my $result;
781:
782: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
783: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 784: my $include = $token->[2]->{'include'};
785: my $exclude = $token->[2]->{'exclude'};
786: my %languages=&Apache::loncommon::display_languages();
787: $result='1';
788: if ($include) {
789: $result='';
790: foreach (split(/\,/,$include)) {
791: if ($languages{$_}) { $result='1'; }
792: }
793: }
794: if ($exclude) {
795: foreach (split(/\,/,$exclude)) {
796: if ($languages{$_}) { $result='0'; }
797: }
798: }
799: if ( ! $result ) {
800: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
801: $style);
802: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
803: }
804: $result='';
1.167 www 805: } elsif ($target eq 'edit') {
806: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 807: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 808: $token,40);
1.211 albertel 809: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 810: $token,40);
811: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
812: } elsif ($target eq 'modified') {
813: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 814: $safeeval,'include',
815: 'exclude');
1.167 www 816: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
817: }
818: return $result;
819: }
820:
821: sub end_languageblock {
1.170 www 822: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
823: my $result;
1.201 albertel 824: if ($target eq "edit") {
1.170 www 825: $result.= &Apache::edit::tag_end($target,$token,'');
826: }
827: return $result;
828: }
829:
830: sub start_instructorcomment {
1.201 albertel 831: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 832:
833: my $result;
834:
835: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
836: $target eq 'tex' || $target eq 'analyze') {
837: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
838: if ( ! $result ) {
1.201 albertel 839: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
840: $parser,$style);
1.170 www 841: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
842: }
843: $result='';
844: } elsif ($target eq 'edit') {
845: $result .=&Apache::edit::tag_start($target,$token);
846: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
847: }
848: return $result;
849: }
850:
851: sub end_instructorcomment {
1.159 albertel 852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 853: my $result;
854: if ($target eq "edit") {
855: $result.= &Apache::edit::tag_end($target,$token,'');
856: }
857: return $result;
1.4 tsai 858: }
859:
860: sub start_while {
1.159 albertel 861: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
862:
1.160 albertel 863: my $result;
1.161 albertel 864: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 865: $target eq 'tex' || $target eq 'analyze') {
866: my $code = $token->[2]->{'condition'};
1.4 tsai 867:
1.160 albertel 868: push( @Apache::structuretags::whileconds, $code);
869: if (!$Apache::lonxml::default_homework_loaded) {
870: &Apache::lonxml::default_homework_load($safeeval);
871: }
872: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 873: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 874: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 875: push( @Apache::structuretags::whileline, $token->[5]);
876: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 877: if ( $result ) {
878: &Apache::lonxml::newparser($parser,\$bodytext);
879: }
880: } elsif ($target eq 'edit') {
881: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 882: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 883: $token,40);
884: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
885: } elsif ($target eq 'modified') {
886: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
887: $safeeval,'condition');
888: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 889: }
1.160 albertel 890: return $result;
1.4 tsai 891: }
892:
893: sub end_while {
1.159 albertel 894: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 895: my $result;
896:
897: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
898: $target eq 'tex' || $target eq 'analyze') {
899: my $code = pop(@Apache::structuretags::whileconds);
900: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 901: my $line = pop(@Apache::structuretags::whileline);
902: my $return = &Apache::run::run($code,$safeeval);
903: my $starttime=time;
904: my $error=0;
905: while ($return) {
906: if (time-$starttime >
907: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
908: $return = 0; $error=1; next;
909: }
910: $result.=&Apache::scripttag::xmlparse($bodytext);
911: $return = &Apache::run::run($code,$safeeval);
912: }
913: if ($error) {
1.211 albertel 914: &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 915: }
916: } elsif ($target eq "edit") {
917: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 918: }
1.160 albertel 919: return $result;
1.1 albertel 920: }
1.6 tsai 921:
1.160 albertel 922: # <randomlist show="1">
1.6 tsai 923: # <tag1>..</tag1>
924: # <tag2>..</tag2>
925: # <tag3>..</tag3>
1.160 albertel 926: # ...
1.6 tsai 927: # </randomlist>
928: sub start_randomlist {
1.159 albertel 929: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
930: my $result;
931: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
932: $target eq 'tex' || $target eq 'analyze') {
933: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
934: my $b_parser= HTML::TokeParser->new(\$body);
935: my $b_tok;
936: my @randomlist;
937: my $list_item;
938: while($b_tok = $b_parser->get_token() ) {
939: if($b_tok->[0] eq 'S') { # start tag
940: # get content of the tag until matching end tag
941: # get all text upto the matching tag
942: # and push the content into @randomlist
943: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
944: $b_parser);
945: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
946: push(@randomlist,$list_item);
947: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
948: # $list_item</b>";
949: }
950: if($b_tok->[0] eq 'T') { # text
951: # what to do with text in between tags?
952: # print "<b>TEXT $b_tok->[1]</b><br />";
953: }
954: # if($b_tok->[0] eq 'E') { # end tag, should not happen
955: # print "<b>END-TAG $b_tok->[1]</b><br />";
956: # }
957: }
958: my @idx_arr = (0 .. $#randomlist);
959: &Apache::structuretags::shuffle(\@idx_arr);
960: my $bodytext = '';
961: my $show=$#randomlist;
962: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
963: $showarg--;
964: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
965: for(0 .. $show) {
966: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
967: }
968: &Apache::lonxml::newparser($parser,\$bodytext);
969: } elsif ($target eq 'edit' ) {
970: $result .=&Apache::edit::tag_start($target,$token);
971: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
972: $token,5);
973: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
974: } elsif ($target eq 'modified' ) {
975: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
976: $safeeval,'show');
977: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
978: }
979: return $result;
1.7 tsai 980: }
981:
982: sub shuffle {
983: my $a=shift;
984: my $i;
1.70 albertel 985: if (defined(@$a)) {
1.251 ! albertel 986: &Apache::response::pushrandomnumber();
1.159 albertel 987: for($i=@$a;--$i;) {
988: my $j=int(&Math::Random::random_uniform() * ($i+1));
989: next if $i == $j;
990: @$a[$i,$j] = @$a[$j,$i];
991: }
1.251 ! albertel 992: &Apache::response::poprandomnumber();
1.7 tsai 993: }
1.6 tsai 994: }
995:
996: sub end_randomlist {
1.159 albertel 997: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
998: my $result;
999: if ($target eq 'edit' ) {
1000: $result=&Apache::edit::tag_end($target,$token,
1001: 'End Randomly Parsed Block');
1002: }
1003: return $result;
1.6 tsai 1004: }
1005:
1.11 albertel 1006: sub start_part {
1.159 albertel 1007: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1008: my $result='';
1009: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1010: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1011: $Apache::inputtags::part=$id;
1.177 albertel 1012: push(@Apache::inputtags::partlist,$id);
1013: @Apache::inputtags::response=();
1.159 albertel 1014: @Apache::inputtags::previous=();
1015: @Apache::inputtags::previous_version=();
1.241 albertel 1016: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1017: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.214 albertel 1018: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.209 albertel 1019: &Apache::run::run($expression,$safeeval);
1.159 albertel 1020:
1021: if ($target eq 'meta') {
1.224 www 1022: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1023: return &Apache::response::mandatory_part_meta.
1024: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1025: } elsif ($target eq 'web' || $target eq 'grade' ||
1026: $target eq 'answer' || $target eq 'tex') {
1027: if ($hidden) {
1028: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1029: } else {
1030: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1031: push (@Apache::inputtags::status,$status);
1032: my $expression='$external::datestatus="'.$status.'";';
1033: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1034: &Apache::run::run($expression,$safeeval);
1.240 albertel 1035: if ($ENV{'request.state'} eq 'construct') {
1.241 albertel 1036: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1037: }
1.216 albertel 1038: if (( $status eq 'CLOSED' ) ||
1039: ( $status eq 'UNCHECKEDOUT') ||
1040: ( $status eq 'BANNED') ||
1041: ( $status eq 'UNAVAILABLE') ||
1042: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1043: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1044: if ( $target eq "web" ) {
1.211 albertel 1045: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1046: } elsif ( $target eq 'tex' ) {
1.195 sakharuk 1047: if (not $ENV{'form.problem_split'}=~/yes/) {
1.211 albertel 1048: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1049: } else {
1.211 albertel 1050: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1051: }
1.159 albertel 1052: }
1053: } else {
1054: if ($target eq 'tex') {
1.195 sakharuk 1055: if (not $ENV{'form.problem_split'}=~/yes/) {
1056: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1057: }
1.159 albertel 1058: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230 albertel 1059: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222 sakharuk 1060: my @allkeys = split /,/,$allkeys;
1061: my $allow_print_points = 0;
1062: foreach my $partial_key (@allkeys) {
1.230 albertel 1063: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1064: if ($1 ne '0') {$allow_print_points=1;}
1065: }
1066: }
1067: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1068: } elsif ($target eq 'web') {
1069: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1070: }
1071: }
1072: }
1073: } elsif ($target eq 'edit') {
1074: $result.=&Apache::edit::tag_start($target,$token);
1075: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1076: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1077: ' '.
1078: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1079: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1080: } elsif ($target eq 'modified') {
1081: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1082: $safeeval,'id','display');
1.159 albertel 1083: if ($constructtag) {
1.225 albertel 1084: #limiting ids to only letters numbers, and space
1.224 www 1085: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1086: $result = &Apache::edit::rebuild_tag($token);
1087: $result.=&Apache::edit::handle_insert();
1088: }
1089: }
1090: return $result;
1.11 albertel 1091: }
1092:
1093: sub end_part {
1.159 albertel 1094: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1095: &Apache::lonxml::debug("in end_part $target ");
1096: my $status=$Apache::inputtags::status['-1'];
1097: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1098: my $result='';
1099: if ( $target eq 'meta' ) {
1100: $result='';
1.249 albertel 1101: } elsif ($target eq 'grade') {
1102: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1103: !$hidden) {
1104: $result=&Apache::inputtags::grade;
1105: } else {
1106: # move any submission data to .hidden
1107: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1108: }
1.159 albertel 1109: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1110: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1111: $target);
1.212 albertel 1112: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1113: $gradestatus='';
1114: }
1.159 albertel 1115: $result=$gradestatus;
1.181 albertel 1116: } elsif ($target eq 'edit') {
1117: $result=&Apache::edit::end_table();
1.159 albertel 1118: }
1119: pop @Apache::inputtags::status;
1120: $Apache::inputtags::part='';
1121: return $result;
1.11 albertel 1122: }
1.1 albertel 1123:
1.25 albertel 1124: sub start_preduedate {
1.159 albertel 1125: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1126: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1127: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159 albertel 1128: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1129: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1130: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1131: &Apache::lonxml::get_all_text("/preduedate",$parser);
1132: }
1.24 albertel 1133: }
1.159 albertel 1134: return '';
1.24 albertel 1135: }
1136:
1.25 albertel 1137: sub end_preduedate {
1.159 albertel 1138: return '';
1.24 albertel 1139: }
1140:
1.25 albertel 1141: sub start_postanswerdate {
1.159 albertel 1142: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1143: if ($target eq 'web' || $target eq 'grade') {
1.159 albertel 1144: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1145: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1146: }
1147: } elsif ($target eq 'tex') {
1.234 albertel 1148: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1149: }
1150: return '';
1.24 albertel 1151: }
1152:
1.25 albertel 1153: sub end_postanswerdate {
1.159 albertel 1154: return '';
1.24 albertel 1155: }
1156:
1.25 albertel 1157: sub start_notsolved {
1.159 albertel 1158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1159: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1160: $target eq 'tex') {
1161: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1162: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1163: if ($gradestatus =~ /^correct/ &&
1164: &Apache::response::show_answer()) {
1.159 albertel 1165: &Apache::lonxml::debug("skipping");
1166: &Apache::lonxml::get_all_text("/notsolved",$parser);
1167: }
1.24 albertel 1168: }
1.159 albertel 1169: return '';
1.24 albertel 1170: }
1171:
1.25 albertel 1172: sub end_notsolved {
1.159 albertel 1173: return '';
1.24 albertel 1174: }
1175:
1176: sub start_solved {
1.159 albertel 1177: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1178: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1179: $target eq 'tex') {
1180: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1181: if ($gradestatus !~ /^correct/ ||
1182: !&Apache::response::show_answer()) {
1.159 albertel 1183: &Apache::lonxml::get_all_text("/solved",$parser);
1184: }
1.24 albertel 1185: }
1.159 albertel 1186: return '';
1.24 albertel 1187: }
1188:
1189: sub end_solved {
1.248 albertel 1190: return '';
1191: }
1192:
1193: sub start_problemtype {
1194: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1195: my $result;
1196: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1197: $target eq 'tex' || $target eq 'analyze') {
1198: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1199: if (!defined($mode)) { $mode='show'; }
1200: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1201: my $found=0;
1202: foreach my $type (split(',',$for)) {
1203: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1204: }
1205: if ($mode eq 'show' && !$found) {
1206: &Apache::lonxml::get_all_text("/problemtype",$parser);
1207: }
1208: if ($mode eq 'hide' && $found) {
1209: &Apache::lonxml::get_all_text("/problemtype",$parser);
1210: }
1211: } elsif ($target eq 'edit') {
1212: $result .=&Apache::edit::tag_start($target,$token);
1213: $result.=&Apache::edit::select_arg('Mode:','mode',
1214: [['show','Show'],
1215: ['hide','Hide']]
1216: ,$token);
1217: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1218: [ ['exam','Exam/Quiz Problem'],
1219: ['survey','Survey'],
1220: ['problem','Homework Problem'] ]
1221: ,$token);
1222: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1223: } elsif ($target eq 'modified') {
1224: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1225: $safeeval,'mode','for');
1226: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1227: }
1228: return $result;
1229: }
1230:
1231: sub end_problemtype {
1.159 albertel 1232: return '';
1.24 albertel 1233: }
1.34 albertel 1234:
1235: sub start_startouttext {
1.159 albertel 1236: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1237: my @result=(''.'');
1238: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1239: return (@result);
1.34 albertel 1240: }
1.159 albertel 1241:
1.34 albertel 1242: sub end_startouttext {
1.159 albertel 1243: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1244: my $result='';
1245: my $text='';
1246:
1247: if ($target eq 'edit') {
1248: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1249: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1250: <td>".&mt('Delete:').
1.159 albertel 1251: &Apache::edit::deletelist($target,$token)
1252: ."</td>
1.42 albertel 1253: <td>".
1.159 albertel 1254: &Apache::edit::insertlist($target,$token).
1255: &Apache::edit::end_row().
1256: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1257: . &Apache::loncommon::helpLatexCheatsheet () .
1.159 albertel 1258: &Apache::edit::editfield($token->[1],$text,"",80,4);
1259: }
1260: if ($target eq 'modified') {
1.219 albertel 1261: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1262: }
1263: if ($target eq 'tex') {
1264: $result .= '\noindent ';
1265: }
1266: return $result;
1.34 albertel 1267: }
1.159 albertel 1268:
1.34 albertel 1269: sub start_endouttext {
1.159 albertel 1270: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1271: my $result='';
1272: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1273: if ($target eq "modified") {
1274: $result='<endouttext />'.
1275: &Apache::edit::handle_insertafter('startouttext'); }
1276: return $result;
1.34 albertel 1277: }
1.159 albertel 1278:
1.34 albertel 1279: sub end_endouttext {
1.159 albertel 1280: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1281: my @result=('','');
1282: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1283: return (@result);
1.34 albertel 1284: }
1.159 albertel 1285:
1.45 albertel 1286: sub delete_startouttext {
1.159 albertel 1287: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1288: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1289: my $text=$$parser['-1']->get_text("/endouttext");
1290: my $ntoken=$$parser['-1']->get_token();
1291: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1292: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1293: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1294: # they did the last time round
1295: &Apache::lonxml::increasedepth($ntoken);
1296: &Apache::lonxml::decreasedepth($ntoken);
1297: return 1;
1.193 www 1298: }
1299:
1300: sub start_simpleeditbutton {
1301: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1302: my $result='';
1303: if (($target eq 'web') &&
1304: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220 www 1305: my $url=$ENV{'request.noversionuri'};
1.193 www 1306: $url=~s/\?.*$//;
1.194 www 1307: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211 albertel 1308: '<a href="'.$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 1309: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1310: }
1311: return $result;
1312: }
1313:
1314: sub end_simpleeditbutton {
1315: return '';
1.45 albertel 1316: }
1.34 albertel 1317:
1.1 albertel 1318: 1;
1319: __END__
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