Annotation of loncom/homework/structuretags.pm, revision 1.237
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.237 ! albertel 4: # $Id: structuretags.pm,v 1.236 2004/02/16 17:19:36 albertel Exp $
1.74 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.33 albertel 28: # 2/19 Guy
1.44 ng 29: # 6/26/2001 fixed extra web display at end of <web></web> tags
1.60 www 30: # 8/17,8/18,8/20 Gerd Kortemeyer
1.54 www 31:
1.133 sakharuk 32:
1.1 albertel 33: package Apache::structuretags;
34:
35: use strict;
36: use Apache::lonnet;
1.101 sakharuk 37: use Apache::File();
1.147 www 38: use Apache::lonmenu;
1.210 albertel 39: use Apache::lonlocal;
1.231 sakharuk 40: use Apache::lonxml;
1.1 albertel 41:
1.78 harris41 42: BEGIN {
1.193 www 43: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext',
1.197 www 44: 'simpleeditbutton','definetag'));
1.10 albertel 45: }
46:
47: sub start_web {
1.159 albertel 48: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200 albertel 49: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
50: if ($target eq 'web') {
51: return $bodytext;
1.159 albertel 52: }
53: return '';
1.10 albertel 54: }
55:
56: sub end_web {
1.44 ng 57: return '';
1.10 albertel 58: }
59:
60: sub start_tex {
1.159 albertel 61: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198 sakharuk 62: my $result='';
1.200 albertel 63: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
64: if ($target eq 'tex') {
65: return $bodytext.' ';
1.159 albertel 66: }
1.198 sakharuk 67: return $result;;
1.10 albertel 68: }
69:
70: sub end_tex {
1.44 ng 71: return '';
1.9 albertel 72: }
73:
1.48 albertel 74: sub page_start {
1.159 albertel 75: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
76: my %found;
1.207 albertel 77: foreach my $taginside (@$tagstack) {
1.159 albertel 78: foreach my $taglookedfor ('html','body','form') {
79: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
80: }
81: }
82:
83: my $result;
84: my $head_tag_start;
85: if (!defined($found{'html'})) {
86: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
87: $parstack,$parser,$safeeval);
1.218 albertel 88: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
1.159 albertel 89: }
90: my $body_tag_start;
91: if (!defined($found{'body'})) {
92: $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
93: 'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
94: my $background=&Apache::lonxml::get_param('background',$parstack,
95: $safeeval);
1.199 www 96: if ($ENV{'browser.imagesuppress'} eq 'on') { $background=''; }
1.159 albertel 97: if ($background) {
98: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
99: $background;
100: $body_tag_start.='background="'.$background.'" ';
101: } else {
102: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
103: $safeeval);
1.199 www 104: if (($bgcolor) && ($ENV{'browser.blackwhite'} ne 'on')) {
1.159 albertel 105: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
106: } else {
107: $body_tag_start.='bgcolor="#ffffff"';
108: }
1.199 www 109: }
110: if ($ENV{'browser.fontenhance'} eq 'on') {
111: $body_tag_start.=' style="font-size: x-large;" ';
1.159 albertel 112: }
113: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
114: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
1.165 albertel 115: my ($symb,undef,undef,undef,$publicuser)=
116: &Apache::lonxml::whichuser();
117: if ($symb eq '' && !$publicuser) {
1.159 albertel 118: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
1.211 albertel 119: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
1.159 albertel 120: $body_tag_start.=$help;
121: }
122: }
123: }
124: my $form_tag_start;
125: if (!defined($found{'form'})) {
126: $form_tag_start='<form name="lonhomework" method="POST" action="'.
127: $ENV{'request.uri'}.'">';
128: }
129: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105 albertel 130: }
131:
1.141 matthew 132: #use Time::HiRes();
1.105 albertel 133: sub get_resource_name {
1.159 albertel 134: my ($parstack,$safeeval)=@_;
1.204 albertel 135: if (defined($Apache::lonhomework::name)) {
136: return $Apache::lonhomework::name;
137: }
1.159 albertel 138: my $name=&Apache::lonnet::gettitle();
139: if ($name eq '') {
140: $name=&Apache::lonnet::EXT('resource.title');
141: if ($name eq 'con_lost') { $name = ''; }
142: }
1.204 albertel 143: if ($name!~/\S+/) {
144: $name=$ENV{'request.uri'};
1.205 albertel 145: $name=~s-.*/([^/]+)$-$1-;
1.204 albertel 146: }
1.159 albertel 147: $Apache::lonhomework::name=$name;
148: return $name;
1.105 albertel 149: }
150:
151: sub setup_rndseed {
1.159 albertel 152: my ($safeeval)=@_;
153: my $rndseed;
1.162 albertel 154: my ($symb)=&Apache::lonxml::whichuser();
155: if ($ENV{'request.state'} eq "construct" || $symb eq '') {
1.159 albertel 156: $rndseed=$ENV{'form.rndseed'};
157: if (!$rndseed) {
1.162 albertel 158: $rndseed=$Apache::lonhomework::history{'rndseed'};
159: if (!$rndseed) {
160: $rndseed=time;
161: }
1.237 ! albertel 162: $ENV{'form.rndseed'}=$rndseed;
1.162 albertel 163: }
1.210 albertel 164: if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
165: $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 166: srand(time);
167: $rndseed=int(rand(2100000000));
1.159 albertel 168: $ENV{'form.rndseed'}=$rndseed;
1.180 albertel 169: delete($ENV{'form.resetdata'});
170: delete($ENV{'form.newrandomization'});
1.159 albertel 171: }
1.187 albertel 172: if (defined($rndseed) && $rndseed ne int($rndseed)) {
173: $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));
174: }
1.221 albertel 175: if ($safeeval) {
176: &Apache::lonxml::debug("Setting rndseed to $rndseed");
177: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
178: }
1.159 albertel 179: }
180: return $rndseed;
1.105 albertel 181: }
182:
183: sub problem_edit_header {
1.159 albertel 184: return '<input type="hidden" name="submitted" value="edit" />
1.210 albertel 185: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
186: <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />
187: <input type="submit" name="problemmode" value="'.&mt('EditXML').'" />
188: <input type="submit" name="Undo" value="'.&mt('undo').'" /> <hr />
189: <input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.229 www 190: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
191: &Apache::loncommon::help_open_topic('Problem_Editor_XML_Index',
192: 'Problem Editing Help').'</td><td>'.
193: &Apache::loncommon::help_open_faq(5).
194: &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>'.
1.228 www 195: '<table border="0"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 196: }
197:
198: sub problem_edit_footer {
1.210 albertel 199: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
200: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />';
1.105 albertel 201: }
202:
1.235 albertel 203: sub option {
204: my ($value,$name) = @_;
205: my $result ="<option value='".$value."' ";
206: if ($ENV{'form.'.$name} eq $value) {
207: $result.=" selected='on' ";
208: }
209: $result.='>';
210: return $result;
211: }
212:
1.105 albertel 213: sub problem_web_to_edit_header {
1.159 albertel 214: my ($rndseed)=@_;
1.210 albertel 215: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />
216: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
217: <input type="submit" name="problemmode" value="'.&mt('EditXML').'" />
218: <input type="submit" name="newrandomization" value="'.&mt('New Randomization').'" />
219: <input type="submit" name="resetdata" value="'.&mt('Reset Submissions').'" />
220: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.175 albertel 221: <input type="text" name="rndseed" width="10" value="'.
222: $rndseed.'"
223: onChange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.105 albertel 224: <input type="checkbox" name="showallfoils" ';
1.159 albertel 225: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
1.228 www 226: $result.= ' />'.&mt(' Show All Foils').
227: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
228: '<hr />';
1.235 albertel 229: $result.="
230: <nobr>
231: Problem Status:
232: <select name='problemstate'>
233: <option name=''></option>
234: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
235: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
236: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
237: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
238: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
239: </select>
240: </nobr>
241: <nobr>
242: Problem Type:
243: <select name='problemtype'>
244: <option name=''></option>
245: ".&option('exam' ,'problemtype')."Exam Problem</option>
246: ".&option('problem','problemtype')."Homework problem</option>
247: ".&option('survey' ,'problemtype')."Survey Question</option>
248: </select>
249: </nobr>
250: <nobr>
251: Feedback Mode:
252: <select name='problemstatus'>
253: <option value=''></option>
254: ".&option('yes','problemstatus')."Show Feedback</option>
255: ".&option('no', 'problemstatus')."Don\'t Show Feedback</option>
256: </select>
257: <input type='submit' name='changeproblemmode' value='Change' />
258: </nobr>
259: <hr />";
1.159 albertel 260: my $numtoanalyze=$ENV{'form.numtoanalyze'};
1.176 albertel 261: if (!$numtoanalyze) { $numtoanalyze=20; }
1.210 albertel 262: $result.= '<input type="submit" name="problemmode" value='.
263: &mt('"Calculate answers').'" /> for
1.136 albertel 264: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 265: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
266: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 267: '',undef,undef,300).
1.210 albertel 268: '<hr />';
1.159 albertel 269: return $result;
1.48 albertel 270: }
271:
1.65 albertel 272: sub initialize_storage {
1.159 albertel 273: %Apache::lonhomework::results=();
1.162 albertel 274: %Apache::lonhomework::history=();
1.159 albertel 275: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 276: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
1.159 albertel 277: %Apache::lonhomework::history=
278: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
279: my ($temp)=keys %Apache::lonhomework::history ;
280: &Apache::lonxml::debug("Return message of $temp");
281: } else {
282: %Apache::lonhomework::history=
283: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
284: }
285: #ignore error conditions
1.67 albertel 286: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 287: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 288: }
289:
290: # -------------------------------------------------------------finalize_storage
291: # Stores away the result has to a student's environment
292: # checks form.grade_ for specific values, other wises stores
293: # to the running users environment
294: sub finalize_storage {
1.159 albertel 295: my $result;
296: my ($temp) = keys %Apache::lonhomework::results;
297: if ( $temp ne '' ) {
298: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.162 albertel 299: if ($ENV{'request.state'} eq 'construct' || $symb eq '') {
300: $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};
1.159 albertel 301: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
302: $ENV{'request.uri'},'',$domain,$name);
303: &Apache::lonxml::debug('Construct Store return message:'.$result);
304: } else {
305: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
306: $symb,$courseid,$domain,$name);
307: &Apache::lonxml::debug('Store return message:'.$result);
308: }
1.67 albertel 309: }
1.159 albertel 310: return $result;
1.65 albertel 311: }
312:
313: sub checkout_msg {
1.211 albertel 314: my %lt=&Apache::lonlocal::texthash(
315: 'resource'=>'The resource needs to be checked out',
316: 'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
317: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
318: 'checkout'=>'Check out Exam for Viewing',
319: 'checkout?'=>'Check out Exam?');
1.159 albertel 320: return (<<ENDCHECKOUT);
1.211 albertel 321: <h2>$lt{'resource'}</h2>
322: <p>$lt{'id_expln'}</p>
323: <font color="red">
324: <p>$lt{'warning'}</p>
1.91 albertel 325: </font>
326: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
327: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 328: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 329: </form>
330: ENDCHECKOUT
331: }
332:
1.204 albertel 333: sub init_problem_globals {
334: my ($type)=@_;
335: #initialize globals
336: if ($type eq 'problem') {
337: $Apache::inputtags::part='0';
338: @Apache::inputtags::partlist=('0');
339: $Apache::lonhomework::problemstatus=
340: &Apache::lonnet::EXT('resource.0.problemstatus');
1.235 albertel 341: &Apache::lonxml::debug("problem status is $Apache::lonhomework::problemstatus");
342: &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'});
343: if ($ENV{'request.state'} eq 'construct' &&
344: defined($ENV{'form.problemstatus'})) {
345: $Apache::lonhomework::problemstatus=$ENV{'form.problemstatus'};
346: }
1.204 albertel 347: } else {
348: $Apache::inputtags::part='';
349: @Apache::inputtags::partlist=();
350: $Apache::lonhomework::problemstatus='';
351: }
352: @Apache::inputtags::responselist = ();
353: @Apache::inputtags::importlist = ();
354: @Apache::inputtags::previous=();
355: @Apache::inputtags::previous_version=();
356: $Apache::structuretags::printanswer='No';
357: @Apache::structuretags::whileconds=();
358: @Apache::structuretags::whilebody=();
359: @Apache::structuretags::whileline=();
360: $Apache::lonhomework::scantronmode=0;
361: undef($Apache::lonhomework::name);
362:
363: }
364:
365: sub reset_problem_globals {
366: my ($type)=@_;
367: undef(%Apache::lonhomework::history);
368: undef(%Apache::lonhomework::results);
369: undef($Apache::inputtags::part);
1.208 albertel 370: #don't undef this, lonhomework.pm takes care of this, we use this to
371: #detect if we try to do 2 problems in one file
372: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 373: undef($Apache::lonhomework::name);
374: }
375:
1.9 albertel 376: sub start_problem {
1.159 albertel 377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 378:
1.184 albertel 379: if ( $Apache::inputtags::part ne '' ||
380: $Apache::lonhomework::parsing_a_problem) {
381: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
382: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159 albertel 383: return '';
384: }
1.184 albertel 385:
386: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 387: &init_problem_globals('problem');
1.166 albertel 388:
389: if (defined($ENV{'scantron.maxquest'})) {
390: $Apache::lonhomework::scantronmode=1;
391: }
1.161 albertel 392:
1.159 albertel 393: if ($target ne 'analyze') {
394: &initialize_storage();
395: if ($target eq 'web') {
396: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
397: }
398: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.237 ! albertel 399: if (($ENV{'request.state'} eq 'construct') &&
! 400: defined($ENV{'form.problemtype'})) {
! 401: $Apache::lonhomework::type=$ENV{'form.problemtype'};
! 402: }
1.159 albertel 403: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
404: }
1.164 albertel 405: if ($Apache::lonhomework::type eq '' ) {
1.159 albertel 406: my $uri=$ENV{'request.uri'};
407: if ($uri=~/\.(\w+)$/) {
408: $Apache::lonhomework::type=$1;
409: &Apache::lonxml::debug("Using type of $1");
410: } else {
411: $Apache::lonhomework::type='problem';
412: &Apache::lonxml::debug("Using default type, problem, :$uri:");
413: }
1.87 albertel 414: }
1.58 www 415:
1.159 albertel 416: #added vars to the scripting enviroment
1.213 albertel 417: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.24 albertel 418: &Apache::run::run($expression,$safeeval);
1.159 albertel 419: my $status;
420: my $accessmsg;
421:
422: #should get back a <html> or the neccesary stuff to start XML/MathML
423: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
424: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
425: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
426:
427: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
428: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
429: $target eq 'tex') {
430: #handle exam checkout
431: if ($Apache::lonhomework::type eq 'exam') {
432: my $token=
433: $Apache::lonhomework::history{"resource.0.outtoken"};
434: if (($ENV{'form.doescheckout'}) && (!$token)) {
435: $token=&Apache::lonxml::maketoken();
436: $Apache::lonhomework::history{"resource.0.outtoken"}=
437: $token;
438: }
439: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 440: }
1.159 albertel 441:
442: #handle rand seed in construction space
443: my $rndseed=&setup_rndseed($safeeval);
1.162 albertel 444: my ($symb)=&Apache::lonxml::whichuser();
1.163 albertel 445: if ($ENV{'request.state'} ne "construct" && $symb eq '') {
1.162 albertel 446: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
447: $rndseed.'" />'.
448: '<input type="submit" name="resetdata"
1.211 albertel 449: value="'.&mt('New Problem Variation').'" />'.
1.164 albertel 450: '<input type="hidden" name="username"
1.185 albertel 451: value="'.$ENV{'form.username'}.'" /> <br />';
1.162 albertel 452: }
1.159 albertel 453: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
454: push (@Apache::inputtags::status,$status);
455: my $expression='$external::datestatus="'.$status.'";';
456: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
457: &Apache::run::run($expression,$safeeval);
458: &Apache::lonxml::debug("Got $status");
459: if (( $status eq 'CLOSED' ) ||
460: ( $status eq 'UNCHECKEDOUT') ||
461: ( $status eq 'BANNED') ||
1.216 albertel 462: ( $status eq 'UNAVAILABLE') ||
463: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 464: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
465: if ( $target eq "web" ) {
466: $result.= $head_tag_start.'</head>';
467: my $msg=$body_tag_start;
468: if ($status eq 'UNAVAILABLE') {
1.211 albertel 469: $result.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.159 albertel 470: } else {
1.211 albertel 471: $result.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 472: }
1.216 albertel 473: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159 albertel 474: $msg.='The problem '.$accessmsg;
475: } elsif ($status eq 'UNCHECKEDOUT') {
476: $msg.=&checkout_msg;
477: }
478: $result.=$msg.'<br />';
479: } elsif ($target eq 'tex') {
480: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
481: if ($status eq 'UNAVAILABLE') {
1.211 albertel 482: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 483: } else {
1.211 albertel 484: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 485: }
486: }
487: } elsif ($target eq 'web') {
488: my $name= &get_resource_name($parstack,$safeeval);
1.227 albertel 489: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 490: $body_tag_start \n $form_tag_start".
1.227 albertel 491: '<input type="hidden" name="submitted" value="yes" />';
492: # create a page header and exit
493: if ($ENV{'request.state'} eq "construct") {
494: $result.= &problem_web_to_edit_header($ENV{'form.rndseed'});
495: }
496: # if we are viewing someone else preserve that info
497: if (defined $ENV{'form.grade_symb'}) {
498: foreach my $field ('symb','courseid','domain','username') {
499: $result .= '<input type="hidden" name="grade_'.$field.
500: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
1.159 albertel 501: }
502: }
503: } elsif ($target eq 'tex') {
1.192 sakharuk 504: my $startminipage = '';
1.191 sakharuk 505: if (not $ENV{'form.problem_split'}=~/yes/) {
1.192 sakharuk 506: $startminipage = '\begin{minipage}{\textwidth}';
1.178 sakharuk 507: }
1.159 albertel 508: my $id = $Apache::inputtags::part;
509: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.223 sakharuk 510: my $packages=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
511: my @packages = split /,/,$packages;
512: my $allow_print_points = 0;
513: foreach my $partial_key (@packages) {
1.230 albertel 514: if ($partial_key=~m/^part_0$/) {
1.223 sakharuk 515: $allow_print_points=1;
1.159 albertel 516: }
517: }
518: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
519: $duedate = POSIX::strftime("%c",localtime($duedate));
520: my $temp_file;
521: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
522: if (-e $filename) {
523: $temp_file = Apache::File->new($filename);
524: } else {
525: $temp_file = Apache::File->new('>>'.$filename);
526: }
527: my @due_file_content = <$temp_file>;
528: my $due_file_content = $due_file_content[$#due_file_content];
529: chomp $due_file_content;
1.231 sakharuk 530: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval));
1.159 albertel 531: if ($due_file_content ne $duedate) {
532: $temp_file = Apache::File->new('>'.$filename);
533: print $temp_file "$duedate\n";
534: if (not $ENV{'request.symb'} =~ m/\.page_/) {
535: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.206 sakharuk 536: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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 537: } else {
1.206 sakharuk 538: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 539: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
540: }
1.104 sakharuk 541: } else {
1.159 albertel 542: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104 sakharuk 543: }
1.101 sakharuk 544: } else {
1.159 albertel 545: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.206 sakharuk 546: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}{'.$name_of_resourse.'}';
1.159 albertel 547: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
548: } else {
549: $result .= '\vskip 1mm \\\\\\\\';
550: }
551: }
1.99 sakharuk 552: }
1.159 albertel 553: } elsif ($target eq 'edit') {
554: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
555: &problem_edit_header();
1.226 albertel 556: $Apache::lonxml::warnings_error_header=
557: &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 558: my $temp=&Apache::edit::insertlist($target,$token);
559: $result.=$temp;
560: } elsif ($target eq 'modified') {
561: $result=$token->[4];
562: $result.=&Apache::edit::handle_insert();
563: } else {
564: # page_start returned a starting result, delete it if we don't need it
565: $result = '';
1.99 sakharuk 566: }
1.159 albertel 567: return $result;
1.9 albertel 568: }
569:
570: sub end_problem {
1.159 albertel 571: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
572: my $result='';
573: my $status=$Apache::inputtags::status['-1'];
574: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
575: $target eq 'tex') {
576: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
1.232 albertel 577: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode)) {
1.159 albertel 578: # if part is zero, no <part>s existed, so we need to the grading
579: &Apache::inputtags::grade;
580: } elsif ( ($target eq 'web' || $target eq 'tex') &&
581: $Apache::inputtags::part eq '0' &&
582: $status ne 'UNCHECKEDOUT') {
583: # if part is zero, no <part>s existed, so we need show the current
584: # grading status
585: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
586: $result.= $gradestatus;
587: }
588: if (
589: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
590: ($target eq 'answer') || ($target eq 'tex')
591: ) {
1.227 albertel 592: if ($target ne 'tex' &&
593: $ENV{'form.answer_output_mode'} ne 'tex') {
594: $result.="</form></body>\n";
1.159 albertel 595: }
596: if ($target eq 'web') {
597: $result.=&Apache::lonxml::xmlend();
598: } elsif ($target eq 'tex') {
1.178 sakharuk 599: my $endminipage = '';
1.191 sakharuk 600: if (not $ENV{'form.problem_split'}=~/yes/) {
1.178 sakharuk 601: $endminipage = '\end{minipage}';
602: }
1.174 sakharuk 603: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.159 albertel 604: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.178 sakharuk 605: $result .= $endminipage.'\end{document} ';
1.159 albertel 606: } else {
607: $result .= '';
608: }
609: }
610: }
611: if ($target eq 'grade') {
612: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
613: &finalize_storage();
614: }
1.172 albertel 615: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct')
1.173 albertel 616: && $ENV{'form.answer_output_mode'} ne 'tex') {
1.172 albertel 617: $result.='</html>'; # normally we get it from xmlend, but in CSTR
618: # we always show answer mode too.
1.159 albertel 619: }
620: } elsif ($target eq 'meta') {
621: if ($Apache::inputtags::part eq '0') {
1.179 albertel 622: @Apache::inputtags::response=();
1.159 albertel 623: $result=&Apache::response::mandatory_part_meta;
624: }
1.215 albertel 625: $result.=&Apache::response::meta_part_order();
1.159 albertel 626: } elsif ($target eq 'edit') {
627: &Apache::lonxml::debug("in end_problem with $target, edit");
628: $result = &problem_edit_footer();
629: }
1.155 albertel 630:
1.177 albertel 631: if ($ENV{'request.state'} eq 'construct' && $target eq 'web') {
632: &Apache::inputtags::check_for_duplicate_ids();
633: }
1.204 albertel 634:
635: &reset_problem_globals('problem');
1.159 albertel 636:
637: return $result;
1.48 albertel 638: }
639:
1.108 albertel 640:
1.48 albertel 641: sub start_library {
1.159 albertel 642: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
643: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.204 albertel 644: if ($$tagstack[0] eq 'library') { &init_problem_globals('library') };
1.159 albertel 645: if ($target eq 'edit') {
646: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
647: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
648: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
649: &problem_edit_header();
650: my $temp=&Apache::edit::insertlist($target,$token);
651: $result.=$temp;
652: } elsif ($target eq 'modified') {
653: $result=$token->[4];
654: $result.=&Apache::edit::handle_insert();
655: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
656: $ENV{'request.state'} eq "construct" ) {
657: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
658: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
659: my $name=&get_resource_name($parstack,$safeeval);
660: my $rndseed=&setup_rndseed($safeeval);
661: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 662: $body_tag_start \n $form_tag_start".
1.159 albertel 663: '<input type="hidden" name="submitted" value="yes" />';
664: $result.=&problem_web_to_edit_header($rndseed);
665: }
666: return $result;
1.48 albertel 667: }
668:
669: sub end_library {
1.159 albertel 670: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
671: my $result='';
672: if ($target eq 'edit') {
673: $result=&problem_edit_footer();
674: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
675: $ENV{'request.state'} eq "construct") {
676: $result.='</form></body>'.&Apache::lonxml::xmlend();
677: }
1.204 albertel 678: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 679: return $result;
1.197 www 680: }
681:
682: sub start_definetag {
683: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
684:
685: my $result;
686:
687: my $name = $token->[2]->{'name'};
688: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
689: if ($name=~/^\//) {
690: $result=
691: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
692: } else {
693: $result=
694: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
695: }
696: $skip=~s/\</\<\;/gs;
697: $skip=~s/\>/\>\;/gs;
698: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
699: return $result;
700: }
701:
702: sub end_definetag {
703: return '';
1.1 albertel 704: }
705:
706: sub start_block {
1.201 albertel 707: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 708:
709: my $result;
1.1 albertel 710:
1.160 albertel 711: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 712: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 713: my $code = $token->[2]->{'condition'};
1.201 albertel 714: if (defined($code)) {
1.137 albertel 715: if (!$Apache::lonxml::default_homework_loaded) {
716: &Apache::lonxml::default_homework_load($safeeval);
717: }
1.131 albertel 718: $result = &Apache::run::run($code,$safeeval);
719: &Apache::lonxml::debug("block :$code: returned :$result:");
720: } else {
721: $result='1';
722: }
723: if ( ! $result ) {
1.201 albertel 724: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 725: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
726: }
727: $result='';
728: } elsif ($target eq 'edit') {
729: $result .=&Apache::edit::tag_start($target,$token);
730: $result .=&Apache::edit::text_arg('Test Condition:','condition',
731: $token,40);
732: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
733: } elsif ($target eq 'modified') {
734: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
735: $safeeval,'condition');
736: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 737: }
1.131 albertel 738: return $result;
1.1 albertel 739: }
740:
741: sub end_block {
1.167 www 742: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
743: my $result;
744: if ($target eq "edit") {
745: $result.= &Apache::edit::tag_end($target,$token,'');
746: }
747: return $result;
748: }
749:
750: sub start_languageblock {
1.201 albertel 751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 752:
753: my $result;
754:
755: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
756: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 757: my $include = $token->[2]->{'include'};
758: my $exclude = $token->[2]->{'exclude'};
759: my %languages=&Apache::loncommon::display_languages();
760: $result='1';
761: if ($include) {
762: $result='';
763: foreach (split(/\,/,$include)) {
764: if ($languages{$_}) { $result='1'; }
765: }
766: }
767: if ($exclude) {
768: foreach (split(/\,/,$exclude)) {
769: if ($languages{$_}) { $result='0'; }
770: }
771: }
772: if ( ! $result ) {
773: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
774: $style);
775: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
776: }
777: $result='';
1.167 www 778: } elsif ($target eq 'edit') {
779: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 780: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 781: $token,40);
1.211 albertel 782: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 783: $token,40);
784: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
785: } elsif ($target eq 'modified') {
786: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 787: $safeeval,'include',
788: 'exclude');
1.167 www 789: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
790: }
791: return $result;
792: }
793:
794: sub end_languageblock {
1.170 www 795: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
796: my $result;
1.201 albertel 797: if ($target eq "edit") {
1.170 www 798: $result.= &Apache::edit::tag_end($target,$token,'');
799: }
800: return $result;
801: }
802:
803: sub start_instructorcomment {
1.201 albertel 804: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 805:
806: my $result;
807:
808: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
809: $target eq 'tex' || $target eq 'analyze') {
810: $result=($ENV{'request.role'}=~/^(in|cc|au|ca|li)/);
811: if ( ! $result ) {
1.201 albertel 812: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
813: $parser,$style);
1.170 www 814: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
815: }
816: $result='';
817: } elsif ($target eq 'edit') {
818: $result .=&Apache::edit::tag_start($target,$token);
819: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
820: }
821: return $result;
822: }
823:
824: sub end_instructorcomment {
1.159 albertel 825: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 826: my $result;
827: if ($target eq "edit") {
828: $result.= &Apache::edit::tag_end($target,$token,'');
829: }
830: return $result;
1.4 tsai 831: }
832:
833: sub start_while {
1.159 albertel 834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
835:
1.160 albertel 836: my $result;
1.161 albertel 837: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 838: $target eq 'tex' || $target eq 'analyze') {
839: my $code = $token->[2]->{'condition'};
1.4 tsai 840:
1.160 albertel 841: push( @Apache::structuretags::whileconds, $code);
842: if (!$Apache::lonxml::default_homework_loaded) {
843: &Apache::lonxml::default_homework_load($safeeval);
844: }
845: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 846: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 847: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 848: push( @Apache::structuretags::whileline, $token->[5]);
849: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 850: if ( $result ) {
851: &Apache::lonxml::newparser($parser,\$bodytext);
852: }
853: } elsif ($target eq 'edit') {
854: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 855: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 856: $token,40);
857: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
858: } elsif ($target eq 'modified') {
859: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
860: $safeeval,'condition');
861: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 862: }
1.160 albertel 863: return $result;
1.4 tsai 864: }
865:
866: sub end_while {
1.159 albertel 867: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 868: my $result;
869:
870: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
871: $target eq 'tex' || $target eq 'analyze') {
872: my $code = pop(@Apache::structuretags::whileconds);
873: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 874: my $line = pop(@Apache::structuretags::whileline);
875: my $return = &Apache::run::run($code,$safeeval);
876: my $starttime=time;
877: my $error=0;
878: while ($return) {
879: if (time-$starttime >
880: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
881: $return = 0; $error=1; next;
882: }
883: $result.=&Apache::scripttag::xmlparse($bodytext);
884: $return = &Apache::run::run($code,$safeeval);
885: }
886: if ($error) {
1.211 albertel 887: &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 888: }
889: } elsif ($target eq "edit") {
890: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 891: }
1.160 albertel 892: return $result;
1.1 albertel 893: }
1.6 tsai 894:
1.160 albertel 895: # <randomlist show="1">
1.6 tsai 896: # <tag1>..</tag1>
897: # <tag2>..</tag2>
898: # <tag3>..</tag3>
1.160 albertel 899: # ...
1.6 tsai 900: # </randomlist>
901: sub start_randomlist {
1.159 albertel 902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
903: my $result;
904: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
905: $target eq 'tex' || $target eq 'analyze') {
906: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
907: my $b_parser= HTML::TokeParser->new(\$body);
908: my $b_tok;
909: my @randomlist;
910: my $list_item;
911: while($b_tok = $b_parser->get_token() ) {
912: if($b_tok->[0] eq 'S') { # start tag
913: # get content of the tag until matching end tag
914: # get all text upto the matching tag
915: # and push the content into @randomlist
916: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
917: $b_parser);
918: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
919: push(@randomlist,$list_item);
920: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
921: # $list_item</b>";
922: }
923: if($b_tok->[0] eq 'T') { # text
924: # what to do with text in between tags?
925: # print "<b>TEXT $b_tok->[1]</b><br />";
926: }
927: # if($b_tok->[0] eq 'E') { # end tag, should not happen
928: # print "<b>END-TAG $b_tok->[1]</b><br />";
929: # }
930: }
931: my @idx_arr = (0 .. $#randomlist);
932: &Apache::structuretags::shuffle(\@idx_arr);
933: my $bodytext = '';
934: my $show=$#randomlist;
935: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
936: $showarg--;
937: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
938: for(0 .. $show) {
939: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
940: }
941: &Apache::lonxml::newparser($parser,\$bodytext);
942: } elsif ($target eq 'edit' ) {
943: $result .=&Apache::edit::tag_start($target,$token);
944: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
945: $token,5);
946: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
947: } elsif ($target eq 'modified' ) {
948: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
949: $safeeval,'show');
950: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
951: }
952: return $result;
1.7 tsai 953: }
954:
955: sub shuffle {
956: my $a=shift;
957: my $i;
1.70 albertel 958: if (defined(@$a)) {
1.159 albertel 959: &Apache::response::setrandomnumber();
960: for($i=@$a;--$i;) {
961: my $j=int(&Math::Random::random_uniform() * ($i+1));
962: next if $i == $j;
963: @$a[$i,$j] = @$a[$j,$i];
964: }
1.7 tsai 965: }
1.6 tsai 966: }
967:
968: sub end_randomlist {
1.159 albertel 969: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
970: my $result;
971: if ($target eq 'edit' ) {
972: $result=&Apache::edit::tag_end($target,$token,
973: 'End Randomly Parsed Block');
974: }
975: return $result;
1.6 tsai 976: }
977:
1.11 albertel 978: sub start_part {
1.159 albertel 979: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
980: my $result='';
981: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
982: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
983: $Apache::inputtags::part=$id;
1.177 albertel 984: push(@Apache::inputtags::partlist,$id);
985: @Apache::inputtags::response=();
1.159 albertel 986: @Apache::inputtags::previous=();
987: @Apache::inputtags::previous_version=();
1.169 albertel 988: $Apache::lonhomework::problemstatus=
989: &Apache::lonnet::EXT("resource.$id.problemstatus");
1.159 albertel 990: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.214 albertel 991: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.209 albertel 992: &Apache::run::run($expression,$safeeval);
1.159 albertel 993:
994: if ($target eq 'meta') {
1.224 www 995: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
996: return &Apache::response::mandatory_part_meta.
997: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 998: } elsif ($target eq 'web' || $target eq 'grade' ||
999: $target eq 'answer' || $target eq 'tex') {
1000: if ($hidden) {
1001: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1002: } else {
1003: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1004: push (@Apache::inputtags::status,$status);
1005: my $expression='$external::datestatus="'.$status.'";';
1006: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1007: &Apache::run::run($expression,$safeeval);
1.216 albertel 1008: if (( $status eq 'CLOSED' ) ||
1009: ( $status eq 'UNCHECKEDOUT') ||
1010: ( $status eq 'BANNED') ||
1011: ( $status eq 'UNAVAILABLE') ||
1012: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1013: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1014: if ( $target eq "web" ) {
1.211 albertel 1015: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1016: } elsif ( $target eq 'tex' ) {
1.195 sakharuk 1017: if (not $ENV{'form.problem_split'}=~/yes/) {
1.211 albertel 1018: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1019: } else {
1.211 albertel 1020: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1021: }
1.159 albertel 1022: }
1023: } else {
1024: if ($target eq 'tex') {
1.195 sakharuk 1025: if (not $ENV{'form.problem_split'}=~/yes/) {
1026: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1027: }
1.159 albertel 1028: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.230 albertel 1029: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'packages');
1.222 sakharuk 1030: my @allkeys = split /,/,$allkeys;
1031: my $allow_print_points = 0;
1032: foreach my $partial_key (@allkeys) {
1.230 albertel 1033: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1034: if ($1 ne '0') {$allow_print_points=1;}
1035: }
1036: }
1037: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1038: } elsif ($target eq 'web') {
1039: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1040: }
1041: }
1042: }
1043: } elsif ($target eq 'edit') {
1044: $result.=&Apache::edit::tag_start($target,$token);
1045: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1046: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1047: ' '.
1048: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1049: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1050: } elsif ($target eq 'modified') {
1051: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1052: $safeeval,'id','display');
1.159 albertel 1053: if ($constructtag) {
1.225 albertel 1054: #limiting ids to only letters numbers, and space
1.224 www 1055: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1056: $result = &Apache::edit::rebuild_tag($token);
1057: $result.=&Apache::edit::handle_insert();
1058: }
1059: }
1060: return $result;
1.11 albertel 1061: }
1062:
1063: sub end_part {
1.159 albertel 1064: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1065: &Apache::lonxml::debug("in end_part $target ");
1066: my $status=$Apache::inputtags::status['-1'];
1067: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1068: my $result='';
1069: if ( $target eq 'meta' ) {
1070: $result='';
1.232 albertel 1071: } elsif ($target eq 'grade' &&
1072: ($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1073: !$hidden) {
1.159 albertel 1074: $result=&Apache::inputtags::grade;
1075: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1076: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1077: $target);
1.212 albertel 1078: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1079: $gradestatus='';
1080: }
1.159 albertel 1081: $result=$gradestatus;
1.181 albertel 1082: } elsif ($target eq 'edit') {
1083: $result=&Apache::edit::end_table();
1.159 albertel 1084: }
1085: pop @Apache::inputtags::status;
1086: $Apache::inputtags::part='';
1087: return $result;
1.11 albertel 1088: }
1.1 albertel 1089:
1.25 albertel 1090: sub start_preduedate {
1.159 albertel 1091: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1092: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1093: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.159 albertel 1094: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1095: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1096: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1097: &Apache::lonxml::get_all_text("/preduedate",$parser);
1098: }
1.24 albertel 1099: }
1.159 albertel 1100: return '';
1.24 albertel 1101: }
1102:
1.25 albertel 1103: sub end_preduedate {
1.159 albertel 1104: return '';
1.24 albertel 1105: }
1106:
1.25 albertel 1107: sub start_postanswerdate {
1.159 albertel 1108: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1109: if ($target eq 'web' || $target eq 'grade') {
1.159 albertel 1110: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1111: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1112: }
1113: } elsif ($target eq 'tex') {
1.234 albertel 1114: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1115: }
1116: return '';
1.24 albertel 1117: }
1118:
1.25 albertel 1119: sub end_postanswerdate {
1.159 albertel 1120: return '';
1.24 albertel 1121: }
1122:
1.25 albertel 1123: sub start_notsolved {
1.159 albertel 1124: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1125: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1126: $target eq 'tex') {
1127: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1128: &Apache::lonxml::debug("not solved has :$gradestatus:");
1129: if ($gradestatus =~ /^correct/) {
1130: &Apache::lonxml::debug("skipping");
1131: &Apache::lonxml::get_all_text("/notsolved",$parser);
1132: }
1.24 albertel 1133: }
1.159 albertel 1134: return '';
1.24 albertel 1135: }
1136:
1.25 albertel 1137: sub end_notsolved {
1.159 albertel 1138: return '';
1.24 albertel 1139: }
1140:
1141: sub start_solved {
1.159 albertel 1142: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1143: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1144: $target eq 'tex') {
1145: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1146: if ($gradestatus !~ /^correct/) {
1147: &Apache::lonxml::get_all_text("/solved",$parser);
1148: }
1.24 albertel 1149: }
1.159 albertel 1150: return '';
1.24 albertel 1151: }
1152:
1153: sub end_solved {
1.159 albertel 1154: return '';
1.24 albertel 1155: }
1.34 albertel 1156:
1157: sub start_startouttext {
1.159 albertel 1158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1159: my @result=(''.'');
1160: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1161: return (@result);
1.34 albertel 1162: }
1.159 albertel 1163:
1.34 albertel 1164: sub end_startouttext {
1.159 albertel 1165: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1166: my $result='';
1167: my $text='';
1168:
1169: if ($target eq 'edit') {
1170: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1171: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1172: <td>".&mt('Delete:').
1.159 albertel 1173: &Apache::edit::deletelist($target,$token)
1174: ."</td>
1.42 albertel 1175: <td>".
1.159 albertel 1176: &Apache::edit::insertlist($target,$token).
1177: &Apache::edit::end_row().
1178: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1179: . &Apache::loncommon::helpLatexCheatsheet () .
1.159 albertel 1180: &Apache::edit::editfield($token->[1],$text,"",80,4);
1181: }
1182: if ($target eq 'modified') {
1.219 albertel 1183: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1184: }
1185: if ($target eq 'tex') {
1186: $result .= '\noindent ';
1187: }
1188: return $result;
1.34 albertel 1189: }
1.159 albertel 1190:
1.34 albertel 1191: sub start_endouttext {
1.159 albertel 1192: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1193: my $result='';
1194: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1195: if ($target eq "modified") {
1196: $result='<endouttext />'.
1197: &Apache::edit::handle_insertafter('startouttext'); }
1198: return $result;
1.34 albertel 1199: }
1.159 albertel 1200:
1.34 albertel 1201: sub end_endouttext {
1.159 albertel 1202: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1203: my @result=('','');
1204: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1205: return (@result);
1.34 albertel 1206: }
1.159 albertel 1207:
1.45 albertel 1208: sub delete_startouttext {
1.159 albertel 1209: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1210: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1211: my $text=$$parser['-1']->get_text("/endouttext");
1212: my $ntoken=$$parser['-1']->get_token();
1213: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1214: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1215: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1216: # they did the last time round
1217: &Apache::lonxml::increasedepth($ntoken);
1218: &Apache::lonxml::decreasedepth($ntoken);
1219: return 1;
1.193 www 1220: }
1221:
1222: sub start_simpleeditbutton {
1223: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1224: my $result='';
1225: if (($target eq 'web') &&
1226: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'}))) {
1.220 www 1227: my $url=$ENV{'request.noversionuri'};
1.193 www 1228: $url=~s/\?.*$//;
1.194 www 1229: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.211 albertel 1230: '<a href="'.$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 1231: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1232: }
1233: return $result;
1234: }
1235:
1236: sub end_simpleeditbutton {
1237: return '';
1.45 albertel 1238: }
1.34 albertel 1239:
1.1 albertel 1240: 1;
1241: __END__
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