Annotation of loncom/homework/structuretags.pm, revision 1.321
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.321 ! albertel 4: # $Id: structuretags.pm,v 1.320 2005/11/10 22:01:30 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: #
1.254 www 28: ###
1.54 www 29:
1.133 sakharuk 30:
1.1 albertel 31: package Apache::structuretags;
32:
33: use strict;
34: use Apache::lonnet;
1.101 sakharuk 35: use Apache::File();
1.147 www 36: use Apache::lonmenu;
1.210 albertel 37: use Apache::lonlocal;
1.231 sakharuk 38: use Apache::lonxml;
1.267 albertel 39: use Time::HiRes qw( gettimeofday tv_interval );
1.78 harris41 40: BEGIN {
1.248 albertel 41: &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 42: }
43:
44: sub start_web {
1.159 albertel 45: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200 albertel 46: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
47: if ($target eq 'web') {
48: return $bodytext;
1.159 albertel 49: }
50: return '';
1.10 albertel 51: }
52:
53: sub end_web {
1.44 ng 54: return '';
1.10 albertel 55: }
56:
57: sub start_tex {
1.159 albertel 58: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198 sakharuk 59: my $result='';
1.200 albertel 60: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
61: if ($target eq 'tex') {
62: return $bodytext.' ';
1.159 albertel 63: }
1.198 sakharuk 64: return $result;;
1.10 albertel 65: }
66:
67: sub end_tex {
1.44 ng 68: return '';
1.9 albertel 69: }
70:
1.290 albertel 71: sub body_tag_start {
72: my ($target,$background,$bgcolor)=@_;
73: my $body_tag_start='<body onload="'.&Apache::lonmenu::loadevents().'" '.
74: 'onunload="'.&Apache::lonmenu::unloadevents().'" ';
75: if ($env{'browser.imagesuppress'} eq 'on') { $background=''; }
76: if ($background) {
1.306 albertel 77: &Apache::lonxml::extlink($background);
1.290 albertel 78: $body_tag_start.='background="'.$background.'" ';
79: } else {
80: if (($bgcolor) && ($env{'browser.blackwhite'} ne 'on')) {
81: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
82: } else {
83: $body_tag_start.='bgcolor="#ffffff"';
84: }
85: }
86: if ($env{'browser.fontenhance'} eq 'on') {
87: $body_tag_start.=' style="font-size: x-large;" ';
88: }
89: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
1.297 albertel 90:
91: &Apache::lontexconvert::jsMath_reset();
1.290 albertel 92: if ($env{'environment.texengine'} eq 'jsMath') {
1.297 albertel 93: $body_tag_start.=&Apache::lontexconvert::jsMath_header();
1.290 albertel 94: }
95: return $body_tag_start;
96: }
1.291 albertel 97:
1.48 albertel 98: sub page_start {
1.159 albertel 99: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
100: my %found;
1.207 albertel 101: foreach my $taginside (@$tagstack) {
1.159 albertel 102: foreach my $taglookedfor ('html','body','form') {
103: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
104: }
105: }
106:
107: my $result;
108: my $head_tag_start;
109: if (!defined($found{'html'})) {
110: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
111: $parstack,$parser,$safeeval);
1.254 www 112: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target).
1.261 www 113: &Apache::lonhtmlcommon::htmlareaheaders().
1.270 albertel 114: &Apache::lonhtmlcommon::spellheader().
115: &Apache::lonxml::fontsettings();
1.159 albertel 116: }
117: my $body_tag_start;
1.318 albertel 118: if (!defined($found{'body'}) && $env{'request.state'} eq 'construct') {
119: if ($env{'environment.remote'} eq 'off') {
120: if ($target eq 'web' || $target eq 'edit') {
121: $body_tag_start=&Apache::loncommon::bodytag();
122: $body_tag_start.=&Apache::lonxml::message_location();
123: }
124: } else {
125: if ($target eq 'web' || $target eq 'edit') {
126: $body_tag_start=&Apache::loncommon::bodytag(undef,undef,undef,1);
127: $body_tag_start.=&Apache::lonxml::message_location();
128: }
1.297 albertel 129: }
1.272 albertel 130: } elsif (!defined($found{'body'})) {
1.159 albertel 131: my $background=&Apache::lonxml::get_param('background',$parstack,
132: $safeeval);
1.290 albertel 133: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
134: $safeeval);
1.299 albertel 135: $body_tag_start=&body_tag_start($target,$background,$bgcolor);
1.291 albertel 136: if ( ($target eq 'web' || $target eq 'webgrade')
137: && $env{'request.state'} ne 'construct') {
1.165 albertel 138: my ($symb,undef,undef,undef,$publicuser)=
139: &Apache::lonxml::whichuser();
140: if ($symb eq '' && !$publicuser) {
1.159 albertel 141: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
1.211 albertel 142: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
1.159 albertel 143: $body_tag_start.=$help;
144: }
145: }
1.245 albertel 146: $body_tag_start.=&Apache::lonxml::message_location();
1.159 albertel 147: }
148: my $form_tag_start;
149: if (!defined($found{'form'})) {
1.281 albertel 150: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="POST" action="';
1.284 albertel 151: my $uri=$env{'request.uri'};
152: if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
1.271 albertel 153: $form_tag_start.=$uri.'">';
1.159 albertel 154: }
155: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105 albertel 156: }
157:
1.141 matthew 158: #use Time::HiRes();
1.105 albertel 159: sub get_resource_name {
1.159 albertel 160: my ($parstack,$safeeval)=@_;
1.204 albertel 161: if (defined($Apache::lonhomework::name)) {
162: return $Apache::lonhomework::name;
163: }
1.279 albertel 164: my ($symb)=&Apache::lonxml::whichuser();
165: my $name=&Apache::lonnet::gettitle($symb);
1.159 albertel 166: if ($name eq '') {
167: $name=&Apache::lonnet::EXT('resource.title');
168: if ($name eq 'con_lost') { $name = ''; }
169: }
1.204 albertel 170: if ($name!~/\S+/) {
1.284 albertel 171: $name=$env{'request.uri'};
1.205 albertel 172: $name=~s-.*/([^/]+)$-$1-;
1.204 albertel 173: }
1.159 albertel 174: $Apache::lonhomework::name=$name;
175: return $name;
1.105 albertel 176: }
177:
178: sub setup_rndseed {
1.159 albertel 179: my ($safeeval)=@_;
180: my $rndseed;
1.162 albertel 181: my ($symb)=&Apache::lonxml::whichuser();
1.284 albertel 182: if ($env{'request.state'} eq "construct" || $symb eq '' ||
1.247 albertel 183: $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 184: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 185: ['rndseed']);
1.284 albertel 186: $rndseed=$env{'form.rndseed'};
1.159 albertel 187: if (!$rndseed) {
1.162 albertel 188: $rndseed=$Apache::lonhomework::history{'rndseed'};
189: if (!$rndseed) {
190: $rndseed=time;
191: }
1.284 albertel 192: $env{'form.rndseed'}=$rndseed;
1.162 albertel 193: }
1.284 albertel 194: if ($env{'form.resetdata'} eq &mt('New Problem Variation') ||
195: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 196: srand(time);
197: $rndseed=int(rand(2100000000));
1.284 albertel 198: $env{'form.rndseed'}=$rndseed;
199: delete($env{'form.resetdata'});
200: delete($env{'form.newrandomization'});
1.159 albertel 201: }
1.187 albertel 202: if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307 albertel 203: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 204: }
1.247 albertel 205: if ($Apache::lonhomework::history{'resource.CODE'}) {
206: $rndseed=&Apache::lonnet::rndseed();
207: }
1.221 albertel 208: if ($safeeval) {
209: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 210: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 211: }
1.159 albertel 212: }
213: return $rndseed;
1.105 albertel 214: }
215:
1.268 albertel 216: sub remember_problem_state {
217: return '
1.284 albertel 218: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
219: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
220: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 221: }
222:
1.105 albertel 223: sub problem_edit_header {
1.268 albertel 224: return '<input type="hidden" name="submitted" value="edit" />'.
225: &Apache::structuretags::remember_problem_state().'
1.210 albertel 226: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 227: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
228: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
229: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
230: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
231: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.260 albertel 232: &Apache::loncommon::help_open_menu('','Problem Editing Help','Problem_Editor_XML_Index','',5,'Authoring',undef,undef,undef,'Problem Editing Help')
233: .'</td></tr></table>'.
1.282 albertel 234: '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 235: }
236:
237: sub problem_edit_footer {
1.210 albertel 238: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 239: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
240: &Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields).
1.280 albertel 241: "\n</form>\n".&Apache::loncommon::endbodytag()."\n</html>";
1.105 albertel 242: }
243:
1.235 albertel 244: sub option {
245: my ($value,$name) = @_;
246: my $result ="<option value='".$value."' ";
1.284 albertel 247: if ($env{'form.'.$name} eq $value) {
1.235 albertel 248: $result.=" selected='on' ";
249: }
250: $result.='>';
251: return $result;
252: }
253:
1.105 albertel 254: sub problem_web_to_edit_header {
1.159 albertel 255: my ($rndseed)=@_;
1.313 albertel 256: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
257: if (!$Apache::lonhomework::parsing_a_task) {
258: $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
259: }
260: $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 261: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
262: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 263: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270 albertel 264: <input type="text" name="rndseed" size="10" value="'.
1.175 albertel 265: $rndseed.'"
1.270 albertel 266: onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.281 albertel 267: <label><input type="checkbox" name="showallfoils" ';
1.315 albertel 268: my $show_all_foils_text =
269: ($Apache::lonhomework::parsing_a_task) ?
270: &mt(' Show All Instances')
271: : &mt(' Show All Foils');
272:
1.284 albertel 273: if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.315 albertel 274: $result.= ' />'.$show_all_foils_text.
1.228 www 275: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.281 albertel 276: '</label><hr />';
1.313 albertel 277: if (!$Apache::lonhomework::parsing_a_task) {
278: $result.="
1.235 albertel 279: <nobr>
280: Problem Status:
281: <select name='problemstate'>
1.270 albertel 282: <option value=''></option>
1.235 albertel 283: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
284: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
285: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
286: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
287: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
288: </select>
289: </nobr>
290: <nobr>
291: Problem Type:
292: <select name='problemtype'>
1.270 albertel 293: <option value=''></option>
1.242 albertel 294: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
295: ".&option('problem','problemtype').&mt("Homework problem")."</option>
296: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 297: </select>
298: </nobr>
299: <nobr>
300: Feedback Mode:
301: <select name='problemstatus'>
302: <option value=''></option>
1.242 albertel 303: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
304: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 305: </select>
306: </nobr>
1.242 albertel 307: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 308: <hr />";
1.313 albertel 309: my $numtoanalyze=$env{'form.numtoanalyze'};
310: if (!$numtoanalyze) { $numtoanalyze=20; }
311: $result.= '<input type="submit" name="problemmode" value='.
312: &mt('"Calculate answers').'" /> for
1.136 albertel 313: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 314: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
315: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 316: '',undef,undef,300).
1.210 albertel 317: '<hr />';
1.313 albertel 318: }
1.159 albertel 319: return $result;
1.48 albertel 320: }
321:
1.65 albertel 322: sub initialize_storage {
1.159 albertel 323: %Apache::lonhomework::results=();
1.162 albertel 324: %Apache::lonhomework::history=();
1.159 albertel 325: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.284 albertel 326: if ($env{'request.state'} eq 'construct' || $symb eq '') {
1.159 albertel 327: %Apache::lonhomework::history=
1.284 albertel 328: &Apache::lonnet::tmprestore($env{'request.uri'},'',$domain,$name);
1.159 albertel 329: my ($temp)=keys %Apache::lonhomework::history ;
330: &Apache::lonxml::debug("Return message of $temp");
331: } else {
332: %Apache::lonhomework::history=
333: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
334: }
335: #ignore error conditions
1.67 albertel 336: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 337: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 338: }
339:
340: # -------------------------------------------------------------finalize_storage
341: # Stores away the result has to a student's environment
342: # checks form.grade_ for specific values, other wises stores
343: # to the running users environment
1.285 raeburn 344: # Will increment totals for attempts, students, and corrects
345: # if running user has student role.
1.65 albertel 346: sub finalize_storage {
1.159 albertel 347: my $result;
1.289 albertel 348: if (%Apache::lonhomework::results) {
1.159 albertel 349: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.284 albertel 350: if ($env{'request.state'} eq 'construct' || $symb eq '') {
351: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 352: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.284 albertel 353: $env{'request.uri'},'',$domain,$name);
1.159 albertel 354: &Apache::lonxml::debug('Construct Store return message:'.$result);
355: } else {
356: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
357: $symb,$courseid,$domain,$name);
358: &Apache::lonxml::debug('Store return message:'.$result);
1.285 raeburn 359: if ($env{'request.role'} =~/^st/) {
360: &store_aggregates($symb,$courseid);
361: }
1.159 albertel 362: }
1.67 albertel 363: }
1.159 albertel 364: return $result;
1.65 albertel 365: }
1.289 albertel 366: use Data::Dumper;
1.65 albertel 367:
1.285 raeburn 368: # -------------------------------------------------------------store_aggregates
369: # Sends hash of values to be incremented in nohist_resourcetracker.db
370: # for the course. Increments total number of attempts, unique students
371: # and corrects for each part for an instance of a problem, as appropriate.
372: sub store_aggregates {
373: my ($symb,$courseid) = @_;
1.286 albertel 374: my %aggregate;
375: my @parts;
1.288 albertel 376: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
377: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 378: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 379: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 380: push(@parts, $1);
1.285 raeburn 381: }
382: }
1.286 albertel 383: foreach my $part (@parts) {
384: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
385: eq 'APPROX_ANS' ||
386: $Apache::lonhomework::results{'resource.'.$part.'.award'}
387: eq 'EXACT_ANS') {
1.287 albertel 388: $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285 raeburn 389: }
1.286 albertel 390: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287 albertel 391: $aggregate{$symb."\0".$part."\0users"} = 1;
1.292 raeburn 392: } else {
1.293 albertel 393: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1.292 raeburn 394: if ($last_reset) {
1.293 albertel 395: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292 raeburn 396: $aggregate{$symb."\0".$part."\0users"} = 1;
397: }
398: }
1.285 raeburn 399: }
1.287 albertel 400: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 401: }
1.292 raeburn 402: if (keys (%aggregate) > 0) {
1.289 albertel 403: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 404: $cdomain,$cname);
405: }
406: }
1.289 albertel 407:
1.65 albertel 408: sub checkout_msg {
1.211 albertel 409: my %lt=&Apache::lonlocal::texthash(
410: 'resource'=>'The resource needs to be checked out',
411: '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.',
412: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
413: 'checkout'=>'Check out Exam for Viewing',
414: 'checkout?'=>'Check out Exam?');
1.159 albertel 415: return (<<ENDCHECKOUT);
1.211 albertel 416: <h2>$lt{'resource'}</h2>
417: <p>$lt{'id_expln'}</p>
418: <font color="red">
419: <p>$lt{'warning'}</p>
1.91 albertel 420: </font>
1.284 albertel 421: <form name="checkout" method="POST" action="$env{'request.uri'}">
1.91 albertel 422: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 423: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 424: </form>
425: ENDCHECKOUT
426: }
427:
1.252 albertel 428: sub firstaccess_msg {
1.253 albertel 429: my ($time,$symb)=@_;
430: my ($map)=&Apache::lonnet::decode_symb($symb);
431: my $foldertitle=&Apache::lonnet::gettitle($map);
432: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.252 albertel 433: return (<<ENDCHECKOUT);
1.253 albertel 434: <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
1.284 albertel 435: <form name="markaccess" method="POST" action="$env{'request.uri'}">
1.252 albertel 436: <input type="hidden" name="markaccess" value="yes" />
437: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
438: </form>
439: ENDCHECKOUT
440: }
441:
1.204 albertel 442: sub init_problem_globals {
443: my ($type)=@_;
444: #initialize globals
1.308 foxr 445: # For problems, we start out in part 0 (outside a <part> tag).
446: # and part 0 is used to describe the main body of the <problem>
447: #
1.204 albertel 448: if ($type eq 'problem') {
449: $Apache::inputtags::part='0';
450: @Apache::inputtags::partlist=('0');
1.266 albertel 451: $Apache::lonhomework::problemstatus=&get_problem_status('0');
452: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 453:
1.266 albertel 454: } elsif ($type eq 'library') {
1.204 albertel 455: $Apache::inputtags::part='';
456: @Apache::inputtags::partlist=();
457: $Apache::lonhomework::problemstatus='';
1.266 albertel 458: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 459:
1.304 albertel 460: } elsif ($type eq 'Task') {
461: $Apache::inputtags::part='0';
462: @Apache::inputtags::partlist=('0');
463: $Apache::lonhomework::problemstatus='';
464: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 465: }
466: @Apache::inputtags::responselist = ();
467: @Apache::inputtags::importlist = ();
468: @Apache::inputtags::previous=();
469: @Apache::inputtags::previous_version=();
470: $Apache::structuretags::printanswer='No';
471: @Apache::structuretags::whileconds=();
472: @Apache::structuretags::whilebody=();
473: @Apache::structuretags::whileline=();
474: $Apache::lonhomework::scantronmode=0;
475: undef($Apache::lonhomework::name);
476:
477: }
478:
479: sub reset_problem_globals {
480: my ($type)=@_;
481: undef(%Apache::lonhomework::history);
482: undef(%Apache::lonhomework::results);
483: undef($Apache::inputtags::part);
1.208 albertel 484: #don't undef this, lonhomework.pm takes care of this, we use this to
485: #detect if we try to do 2 problems in one file
486: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 487: undef($Apache::lonhomework::name);
488: }
489:
1.241 albertel 490: sub set_problem_state {
1.240 albertel 491: my ($part)=@_;
1.284 albertel 492: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 493: $Apache::lonhomework::history{"resource.$part.solved"}=
494: 'correct_by_student';
495: }
496: }
497:
1.241 albertel 498: sub get_problem_status {
499: my ($part)=@_;
1.267 albertel 500: my $problem_status;
1.284 albertel 501: if ($env{'request.state'} eq 'construct' &&
502: defined($env{'form.problemstatus'})) {
503: $problem_status=$env{'form.problemstatus'};
1.267 albertel 504: } else {
505: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
506: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 507: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 508: }
509: return $problem_status;
510: }
511:
1.9 albertel 512: sub start_problem {
1.159 albertel 513: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 514:
1.311 foxr 515: # We'll use the redirection to fix up printing of duedates.
1.321 ! albertel 516: if (!$Apache::lonxml::metamode) {
! 517: &Apache::lonxml::startredirection();
! 518: }
1.311 foxr 519:
1.308 foxr 520: # Problems don't nest and we don't allow more than one <problem> in
521: # a .problem file.
522: #
1.184 albertel 523: if ( $Apache::inputtags::part ne '' ||
524: $Apache::lonhomework::parsing_a_problem) {
525: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
526: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159 albertel 527: return '';
528: }
1.184 albertel 529:
530: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 531: &init_problem_globals('problem');
1.166 albertel 532:
1.284 albertel 533: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 534: $Apache::lonhomework::scantronmode=1;
535: }
1.161 albertel 536:
1.246 albertel 537: &initialize_storage();
1.159 albertel 538: if ($target ne 'analyze') {
539: if ($target eq 'web') {
540: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238 albertel 541: }
1.284 albertel 542: if ($env{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159 albertel 543: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284 albertel 544: if (($env{'request.state'} eq 'construct') &&
545: defined($env{'form.problemtype'})) {
546: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 547: }
1.240 albertel 548: &Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159 albertel 549: }
1.164 albertel 550: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 551: my $uri=$env{'request.uri'};
1.159 albertel 552: if ($uri=~/\.(\w+)$/) {
553: $Apache::lonhomework::type=$1;
554: &Apache::lonxml::debug("Using type of $1");
555: } else {
556: $Apache::lonhomework::type='problem';
557: &Apache::lonxml::debug("Using default type, problem, :$uri:");
558: }
1.87 albertel 559: }
1.301 albertel 560: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 561:
1.159 albertel 562: #added vars to the scripting enviroment
1.213 albertel 563: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 564: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 565: &Apache::run::run($expression,$safeeval);
1.159 albertel 566: my $status;
567: my $accessmsg;
568:
569: #should get back a <html> or the neccesary stuff to start XML/MathML
570: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
571: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.284 albertel 572: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 573:
574: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
575: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
576: $target eq 'tex') {
577: #handle exam checkout
578: if ($Apache::lonhomework::type eq 'exam') {
579: my $token=
580: $Apache::lonhomework::history{"resource.0.outtoken"};
1.284 albertel 581: if (($env{'form.doescheckout'}) && (!$token)) {
1.159 albertel 582: $token=&Apache::lonxml::maketoken();
583: $Apache::lonhomework::history{"resource.0.outtoken"}=
584: $token;
585: }
586: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 587: }
1.284 albertel 588: if ($env{'form.markaccess'}) {
1.252 albertel 589: &Apache::lonnet::set_first_access('map');
590: }
1.159 albertel 591: #handle rand seed in construction space
592: my $rndseed=&setup_rndseed($safeeval);
1.162 albertel 593: my ($symb)=&Apache::lonxml::whichuser();
1.284 albertel 594: if ($env{'request.state'} ne "construct" && $symb eq '') {
1.162 albertel 595: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
596: $rndseed.'" />'.
597: '<input type="submit" name="resetdata"
1.211 albertel 598: value="'.&mt('New Problem Variation').'" />'.
1.164 albertel 599: '<input type="hidden" name="username"
1.284 albertel 600: value="'.$env{'form.username'}.'" />';
601: if ($env{'user.adv'}) {
1.267 albertel 602: $form_tag_start.=
1.300 albertel 603: ' <label><input type="checkbox" name="showallfoils" ';
1.284 albertel 604: if (defined($env{'form.showallfoils'})) {
1.267 albertel 605: $form_tag_start.='checked="on"';
606: }
1.300 albertel 607: $form_tag_start.= ' />'.&mt(' Show All Foils').
608: '</label>';
1.267 albertel 609: }
610: $form_tag_start.='<hr />';
1.162 albertel 611: }
1.159 albertel 612: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
613: push (@Apache::inputtags::status,$status);
614: my $expression='$external::datestatus="'.$status.'";';
615: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
616: &Apache::run::run($expression,$safeeval);
617: &Apache::lonxml::debug("Got $status");
618: if (( $status eq 'CLOSED' ) ||
619: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 620: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 621: ( $status eq 'BANNED') ||
1.216 albertel 622: ( $status eq 'UNAVAILABLE') ||
623: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 624: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
625: if ( $target eq "web" ) {
626: $result.= $head_tag_start.'</head>';
627: my $msg=$body_tag_start;
628: if ($status eq 'UNAVAILABLE') {
1.245 albertel 629: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 630: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 631: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 632: }
1.216 albertel 633: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159 albertel 634: $msg.='The problem '.$accessmsg;
635: } elsif ($status eq 'UNCHECKEDOUT') {
636: $msg.=&checkout_msg;
1.252 albertel 637: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 638: $msg.=&firstaccess_msg($accessmsg,$symb);
1.159 albertel 639: }
640: $result.=$msg.'<br />';
641: } elsif ($target eq 'tex') {
642: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
643: if ($status eq 'UNAVAILABLE') {
1.211 albertel 644: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 645: } else {
1.211 albertel 646: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 647: }
648: }
649: } elsif ($target eq 'web') {
650: my $name= &get_resource_name($parstack,$safeeval);
1.227 albertel 651: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 652: $body_tag_start \n $form_tag_start".
1.227 albertel 653: '<input type="hidden" name="submitted" value="yes" />';
654: # create a page header and exit
1.284 albertel 655: if ($env{'request.state'} eq "construct") {
656: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227 albertel 657: }
658: # if we are viewing someone else preserve that info
1.284 albertel 659: if (defined $env{'form.grade_symb'}) {
1.227 albertel 660: foreach my $field ('symb','courseid','domain','username') {
661: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 662: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 663: }
664: }
665: } elsif ($target eq 'tex') {
1.319 foxr 666: $result .= 'INSERTTEXFRONTMATTERHERE';
667:
1.99 sakharuk 668: }
1.159 albertel 669: } elsif ($target eq 'edit') {
670: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
671: &problem_edit_header();
1.226 albertel 672: $Apache::lonxml::warnings_error_header=
673: &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 674: my $temp=&Apache::edit::insertlist($target,$token);
675: $result.=$temp;
676: } elsif ($target eq 'modified') {
677: $result=$token->[4];
678: $result.=&Apache::edit::handle_insert();
679: } else {
680: # page_start returned a starting result, delete it if we don't need it
681: $result = '';
1.99 sakharuk 682: }
1.159 albertel 683: return $result;
1.9 albertel 684: }
685:
686: sub end_problem {
1.159 albertel 687: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 ! albertel 688: my $result;
1.310 foxr 689:
1.321 ! albertel 690: if (!$Apache::lonxml::metamode) {
! 691: $result = &Apache::lonxml::endredirection(); #started in &start_problem
! 692: }
1.319 foxr 693:
694: if ($target eq 'tex') {
1.321 ! albertel 695:
! 696: # Figure out the front matter and replace the
! 697: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
! 698: # this in end_problem because whether or not we display due
! 699: # dates depends on whether due dates have already been
! 700: # displayed in the problem parts.
! 701:
1.319 foxr 702: my $frontmatter = '';
703: my $startminipage = '';
704: if (not $env{'form.problem_split'}=~/yes/) {
705: $startminipage = '\begin{minipage}{\textwidth}';
706: }
707: my $id = $Apache::inputtags::part;
708: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
709: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
710: my @packages = split /,/,$packages;
711: my $allow_print_points = 0;
712: foreach my $partial_key (@packages) {
713: if ($partial_key=~m/^part_0$/) {
714: $allow_print_points=1;
715: }
716: }
717: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
718: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
719: if (lc($env{'course.'.$env{'request.course.id'}.
720: '.disableexampointprint'}) eq 'yes') {
721: $allow_print_points=0;
722: }
723: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
724: my $begin_doc='\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
725: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
726: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
727:
728: # Figure out what the due date is and if we need to print
729: # it in the problem header. We have been logging the
730: # last due date written to file.
731:
732: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
733: my $duedate = POSIX::strftime("%c",localtime($duetime));
734: my $temp_file;
735: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
736:
737: # Figure out what the last printed due date is or set it
738: # to the epoch if no duedates have been printed.
739:
740: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
741: if (-e $filename) {
742: $temp_file = Apache::File->new($filename);
743: my @due_file = <$temp_file>;
744: $due_file_content = $due_file[$#due_file];
745: chomp $due_file_content;
746: }
747:
748: # We display the due date iff it is not the same as the last
749: # duedate in problem header ($due_file_content), and
750: # none of our parts displayed a duedate.
751: #
752: my $parts_with_displayduedate;
753: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
754: $parts_with_displayduedate =
755: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
756: } else {
757: $parts_with_displayduedate = 0;
758: }
759: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
760: $temp_file = Apache::File->new('>'.$filename);
761: print $temp_file "$duetime\n";
762: if (not $env{'request.symb'} =~ m/\.page_/) {
763: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
764: $frontmatter .= $begin_doc.
765: '\textit{Due date: '.$duedate.'} '.$toc_line;
766: } else {
767: $frontmatter.= $begin_doc.$toc_line;
768: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
769: }
770: } else {
771: $frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
772: }
773: } else {
774: if (not $env{'request.symb'} =~ m/\.page_/) {
775: $frontmatter .= $begin_doc.$toc_line;
776: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
777: } else {
778: $frontmatter .= '\vskip 1mm \\\\\\\\';
779: }
780: }
781: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
782: }
783:
1.159 albertel 784: my $status=$Apache::inputtags::status['-1'];
785: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
786: $target eq 'tex') {
1.249 albertel 787: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 788: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 789: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
790: &Apache::inputtags::grade;
791: } else {
792: # move any submission data to .hidden
793: &Apache::inputtags::hidealldata($Apache::inputtags::part);
794: }
1.159 albertel 795: } elsif ( ($target eq 'web' || $target eq 'tex') &&
796: $Apache::inputtags::part eq '0' &&
1.252 albertel 797: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 798: # if part is zero, no <part>s existed, so we need show the current
799: # grading status
800: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
801: $result.= $gradestatus;
802: }
803: if (
1.284 albertel 804: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 805: ($target eq 'answer') || ($target eq 'tex')
806: ) {
1.227 albertel 807: if ($target ne 'tex' &&
1.284 albertel 808: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 809: $result.="</form>";
810: $result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);
1.159 albertel 811: }
812: if ($target eq 'web') {
1.281 albertel 813: $result.=&Apache::lonxml::xmlend().'</html>';
1.159 albertel 814: } elsif ($target eq 'tex') {
1.178 sakharuk 815: my $endminipage = '';
1.284 albertel 816: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 817: $endminipage = '\end{minipage}';
818: }
1.284 albertel 819: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 820: $result.=&Apache::lonxml::xmlend($target,$parser);
1.257 sakharuk 821: $result=~s/<\/html>//;
1.159 albertel 822: } else {
1.262 sakharuk 823: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 824: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 825: $result .= $endminipage.'\end{document} ';
826: } else {
827: $result .= '';
828: }
1.159 albertel 829: }
830: }
831: }
832: if ($target eq 'grade') {
833: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
834: &finalize_storage();
835: }
1.284 albertel 836: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
837: && $env{'form.answer_output_mode'} ne 'tex') {
1.294 albertel 838: $result.=&Apache::lonxml::xmlend().'</html>';
839: # normally we get it from above, but in CSTR
1.172 albertel 840: # we always show answer mode too.
1.159 albertel 841: }
842: } elsif ($target eq 'meta') {
843: if ($Apache::inputtags::part eq '0') {
1.179 albertel 844: @Apache::inputtags::response=();
1.159 albertel 845: $result=&Apache::response::mandatory_part_meta;
846: }
1.215 albertel 847: $result.=&Apache::response::meta_part_order();
1.258 albertel 848: $result.=&Apache::response::meta_response_order();
1.159 albertel 849: } elsif ($target eq 'edit') {
850: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 851: $result .= &problem_edit_footer();
1.320 albertel 852: } elsif ($target eq 'modified') {
853: $result .= $token->[2];
854: $result.=&Apache::edit::handle_insertafter($token->[1]);
1.159 albertel 855: }
1.155 albertel 856:
1.284 albertel 857: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 858: &Apache::inputtags::check_for_duplicate_ids();
859: }
1.204 albertel 860:
861: &reset_problem_globals('problem');
1.159 albertel 862:
863: return $result;
1.48 albertel 864: }
865:
1.108 albertel 866:
1.48 albertel 867: sub start_library {
1.159 albertel 868: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
869: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244 albertel 870: if ($$tagstack[0] eq 'library') {
871: &init_problem_globals('library');
872: $Apache::lonhomework::type='problem';
873: }
1.159 albertel 874: if ($target eq 'edit') {
875: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
876: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
877: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
878: &problem_edit_header();
879: my $temp=&Apache::edit::insertlist($target,$token);
880: $result.=$temp;
881: } elsif ($target eq 'modified') {
882: $result=$token->[4];
883: $result.=&Apache::edit::handle_insert();
884: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
1.284 albertel 885: $env{'request.state'} eq "construct" ) {
1.159 albertel 886: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
887: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
888: my $name=&get_resource_name($parstack,$safeeval);
889: my $rndseed=&setup_rndseed($safeeval);
890: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 891: $body_tag_start \n $form_tag_start".
1.159 albertel 892: '<input type="hidden" name="submitted" value="yes" />';
893: $result.=&problem_web_to_edit_header($rndseed);
894: }
895: return $result;
1.48 albertel 896: }
897:
898: sub end_library {
1.159 albertel 899: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
900: my $result='';
901: if ($target eq 'edit') {
902: $result=&problem_edit_footer();
903: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
1.284 albertel 904: $env{'request.state'} eq "construct") {
1.280 albertel 905: $result.='</form>'.&Apache::loncommon::endbodytag().
906: &Apache::lonxml::xmlend();
1.159 albertel 907: }
1.204 albertel 908: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 909: return $result;
1.197 www 910: }
911:
912: sub start_definetag {
913: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
914:
915: my $result;
916:
917: my $name = $token->[2]->{'name'};
918: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
919: if ($name=~/^\//) {
920: $result=
921: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
922: } else {
923: $result=
924: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
925: }
926: $skip=~s/\</\<\;/gs;
927: $skip=~s/\>/\>\;/gs;
928: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
929: return $result;
930: }
931:
932: sub end_definetag {
933: return '';
1.1 albertel 934: }
935:
936: sub start_block {
1.201 albertel 937: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 938:
939: my $result;
1.1 albertel 940:
1.160 albertel 941: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 942: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 943: my $code = $token->[2]->{'condition'};
1.201 albertel 944: if (defined($code)) {
1.137 albertel 945: if (!$Apache::lonxml::default_homework_loaded) {
946: &Apache::lonxml::default_homework_load($safeeval);
947: }
1.131 albertel 948: $result = &Apache::run::run($code,$safeeval);
949: &Apache::lonxml::debug("block :$code: returned :$result:");
950: } else {
951: $result='1';
952: }
953: if ( ! $result ) {
1.201 albertel 954: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 955: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
956: }
957: $result='';
958: } elsif ($target eq 'edit') {
959: $result .=&Apache::edit::tag_start($target,$token);
960: $result .=&Apache::edit::text_arg('Test Condition:','condition',
961: $token,40);
962: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
963: } elsif ($target eq 'modified') {
964: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
965: $safeeval,'condition');
966: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 967: }
1.131 albertel 968: return $result;
1.1 albertel 969: }
970:
971: sub end_block {
1.167 www 972: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
973: my $result;
974: if ($target eq "edit") {
975: $result.= &Apache::edit::tag_end($target,$token,'');
976: }
977: return $result;
978: }
979:
980: sub start_languageblock {
1.201 albertel 981: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 982:
983: my $result;
984:
985: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
986: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 987: my $include = $token->[2]->{'include'};
988: my $exclude = $token->[2]->{'exclude'};
989: my %languages=&Apache::loncommon::display_languages();
990: $result='1';
991: if ($include) {
992: $result='';
993: foreach (split(/\,/,$include)) {
994: if ($languages{$_}) { $result='1'; }
995: }
996: }
997: if ($exclude) {
998: foreach (split(/\,/,$exclude)) {
999: if ($languages{$_}) { $result='0'; }
1000: }
1001: }
1002: if ( ! $result ) {
1003: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1004: $style);
1005: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1006: }
1007: $result='';
1.167 www 1008: } elsif ($target eq 'edit') {
1009: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1010: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1011: $token,40);
1.211 albertel 1012: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1013: $token,40);
1014: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1015: } elsif ($target eq 'modified') {
1016: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1017: $safeeval,'include',
1018: 'exclude');
1.167 www 1019: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1020: }
1021: return $result;
1022: }
1023:
1024: sub end_languageblock {
1.170 www 1025: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1026: my $result;
1.201 albertel 1027: if ($target eq "edit") {
1.170 www 1028: $result.= &Apache::edit::tag_end($target,$token,'');
1029: }
1030: return $result;
1031: }
1032:
1033: sub start_instructorcomment {
1.201 albertel 1034: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1035:
1036: my $result;
1037:
1038: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1039: $target eq 'tex' || $target eq 'analyze') {
1.284 albertel 1040: $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
1041: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1042: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1043: $parser,$style);
1.170 www 1044: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1045: }
1046: $result='';
1047: } elsif ($target eq 'edit') {
1048: $result .=&Apache::edit::tag_start($target,$token);
1049: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1050: }
1051: return $result;
1052: }
1053:
1054: sub end_instructorcomment {
1.159 albertel 1055: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1056: my $result;
1057: if ($target eq "edit") {
1058: $result.= &Apache::edit::tag_end($target,$token,'');
1059: }
1060: return $result;
1.4 tsai 1061: }
1062:
1063: sub start_while {
1.159 albertel 1064: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1065:
1.160 albertel 1066: my $result;
1.161 albertel 1067: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 1068: $target eq 'tex' || $target eq 'analyze') {
1069: my $code = $token->[2]->{'condition'};
1.4 tsai 1070:
1.160 albertel 1071: push( @Apache::structuretags::whileconds, $code);
1072: if (!$Apache::lonxml::default_homework_loaded) {
1073: &Apache::lonxml::default_homework_load($safeeval);
1074: }
1075: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 1076: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 1077: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1078: push( @Apache::structuretags::whileline, $token->[5]);
1079: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1080: if ( $result ) {
1081: &Apache::lonxml::newparser($parser,\$bodytext);
1082: }
1083: } elsif ($target eq 'edit') {
1084: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1085: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1086: $token,40);
1087: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1088: } elsif ($target eq 'modified') {
1089: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1090: $safeeval,'condition');
1091: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1092: }
1.160 albertel 1093: return $result;
1.4 tsai 1094: }
1095:
1096: sub end_while {
1.159 albertel 1097: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1098: my $result;
1099:
1100: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1101: $target eq 'tex' || $target eq 'analyze') {
1102: my $code = pop(@Apache::structuretags::whileconds);
1103: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1104: my $line = pop(@Apache::structuretags::whileline);
1105: my $return = &Apache::run::run($code,$safeeval);
1106: my $starttime=time;
1107: my $error=0;
1108: while ($return) {
1109: if (time-$starttime >
1110: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.270 albertel 1111: #$return = 0; $error=1; next;
1.161 albertel 1112: }
1113: $result.=&Apache::scripttag::xmlparse($bodytext);
1114: $return = &Apache::run::run($code,$safeeval);
1115: }
1116: if ($error) {
1.270 albertel 1117: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running <while> on line').' '.$line.'</pre>');
1.160 albertel 1118: }
1119: } elsif ($target eq "edit") {
1120: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1121: }
1.160 albertel 1122: return $result;
1.1 albertel 1123: }
1.6 tsai 1124:
1.160 albertel 1125: # <randomlist show="1">
1.6 tsai 1126: # <tag1>..</tag1>
1127: # <tag2>..</tag2>
1128: # <tag3>..</tag3>
1.160 albertel 1129: # ...
1.6 tsai 1130: # </randomlist>
1131: sub start_randomlist {
1.159 albertel 1132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1133: my $result;
1134: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1135: $target eq 'tex' || $target eq 'analyze') {
1136: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1137: my $b_parser= HTML::LCParser->new(\$body);
1138: $b_parser->xml_mode(1);
1139: $b_parser->marked_sections(1);
1.159 albertel 1140: my $b_tok;
1141: my @randomlist;
1142: my $list_item;
1143: while($b_tok = $b_parser->get_token() ) {
1144: if($b_tok->[0] eq 'S') { # start tag
1145: # get content of the tag until matching end tag
1146: # get all text upto the matching tag
1147: # and push the content into @randomlist
1148: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1149: $b_parser);
1150: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1151: push(@randomlist,$list_item);
1152: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1153: # $list_item</b>";
1154: }
1155: if($b_tok->[0] eq 'T') { # text
1156: # what to do with text in between tags?
1157: # print "<b>TEXT $b_tok->[1]</b><br />";
1158: }
1159: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1160: # print "<b>END-TAG $b_tok->[1]</b><br />";
1161: # }
1162: }
1.303 albertel 1163: if (@randomlist) {
1164: my @idx_arr = (0 .. $#randomlist);
1165: &Apache::structuretags::shuffle(\@idx_arr);
1166: my $bodytext = '';
1167: my $show=$#randomlist;
1168: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1169: $showarg--;
1170: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1171: for(0 .. $show) {
1172: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1173: }
1174: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1175: }
1176: } elsif ($target eq 'edit' ) {
1177: $result .=&Apache::edit::tag_start($target,$token);
1178: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1179: $token,5);
1180: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1181: } elsif ($target eq 'modified' ) {
1182: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1183: $safeeval,'show');
1184: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1185: }
1186: return $result;
1.7 tsai 1187: }
1188:
1189: sub shuffle {
1190: my $a=shift;
1191: my $i;
1.303 albertel 1192: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1193: &Apache::response::pushrandomnumber();
1.159 albertel 1194: for($i=@$a;--$i;) {
1195: my $j=int(&Math::Random::random_uniform() * ($i+1));
1196: next if $i == $j;
1197: @$a[$i,$j] = @$a[$j,$i];
1198: }
1.251 albertel 1199: &Apache::response::poprandomnumber();
1.7 tsai 1200: }
1.6 tsai 1201: }
1202:
1203: sub end_randomlist {
1.159 albertel 1204: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1205: my $result;
1206: if ($target eq 'edit' ) {
1207: $result=&Apache::edit::tag_end($target,$token,
1208: 'End Randomly Parsed Block');
1209: }
1210: return $result;
1.6 tsai 1211: }
1212:
1.283 albertel 1213: sub ordered_show_check {
1214: my $last_part=$Apache::inputtags::partlist[-2];
1215: my $in_order=
1216: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1217: my $in_order_show=1;
1218: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1219: $in_order_show=&Apache::response::check_status($last_part);
1220: }
1221: return $in_order_show;
1222: }
1223:
1.11 albertel 1224: sub start_part {
1.159 albertel 1225: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 ! albertel 1226: if (!$Apache::lonxml::metamode) {
! 1227: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
! 1228: # duedates.
! 1229: }
1.159 albertel 1230: my $result='';
1231: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.296 albertel 1232: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1.159 albertel 1233: $Apache::inputtags::part=$id;
1.177 albertel 1234: push(@Apache::inputtags::partlist,$id);
1235: @Apache::inputtags::response=();
1.159 albertel 1236: @Apache::inputtags::previous=();
1237: @Apache::inputtags::previous_version=();
1.241 albertel 1238: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1239: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1240: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1241: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1242: my $in_order_show=&ordered_show_check();
1.214 albertel 1243: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1244: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1245: &Apache::run::run($expression,$safeeval);
1.159 albertel 1246:
1247: if ($target eq 'meta') {
1.224 www 1248: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1249: return &Apache::response::mandatory_part_meta.
1250: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1251: } elsif ($target eq 'web' || $target eq 'grade' ||
1252: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1253: if ($hidden || !$in_order_show) {
1.159 albertel 1254: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1255: } else {
1256: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1257: push (@Apache::inputtags::status,$status);
1258: my $expression='$external::datestatus="'.$status.'";';
1259: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1260: &Apache::run::run($expression,$safeeval);
1.284 albertel 1261: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1262: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1263: }
1.216 albertel 1264: if (( $status eq 'CLOSED' ) ||
1265: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1266: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1267: ( $status eq 'BANNED') ||
1268: ( $status eq 'UNAVAILABLE') ||
1269: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1270: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1271: if ( $target eq "web" ) {
1.211 albertel 1272: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1273: } elsif ( $target eq 'tex' ) {
1.284 albertel 1274: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1275: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1276: } else {
1.211 albertel 1277: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1278: }
1.159 albertel 1279: }
1280: } else {
1281: if ($target eq 'tex') {
1.284 albertel 1282: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1283: if ($$tagstack[-2] eq 'td') {
1284: $result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1285: } else {
1286: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1287: }
1.195 sakharuk 1288: }
1.159 albertel 1289: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1290: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1291: my @allkeys = split /,/,$allkeys;
1292: my $allow_print_points = 0;
1293: foreach my $partial_key (@allkeys) {
1.230 albertel 1294: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1295: if ($1 ne '0') {$allow_print_points=1;}
1296: }
1297: }
1.275 albertel 1298: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1299: if (defined($maxtries) && $maxtries < 0) {
1300: $allow_print_points=0;
1301: }
1.302 albertel 1302: if (lc($env{'course.'.$env{'request.course.id'}.
1303: '.disableexampointprint'}) eq 'yes') {
1304: $allow_print_points=0;
1305: }
1.222 sakharuk 1306: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1307: } elsif ($target eq 'web') {
1308: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1309: }
1310: }
1311: }
1312: } elsif ($target eq 'edit') {
1313: $result.=&Apache::edit::tag_start($target,$token);
1314: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1315: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1316: ' '.
1317: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1318: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1319: } elsif ($target eq 'modified') {
1320: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1321: $safeeval,'id','display');
1.159 albertel 1322: if ($constructtag) {
1.225 albertel 1323: #limiting ids to only letters numbers, and space
1.224 www 1324: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1325: $result = &Apache::edit::rebuild_tag($token);
1326: $result.=&Apache::edit::handle_insert();
1327: }
1328: }
1329: return $result;
1.11 albertel 1330: }
1331:
1332: sub end_part {
1.159 albertel 1333: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1334: &Apache::lonxml::debug("in end_part $target ");
1335: my $status=$Apache::inputtags::status['-1'];
1336: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 1337: my $in_order_show=&ordered_show_check();
1.321 ! albertel 1338: my $result;
! 1339: if (!$Apache::lonxml::metamode) {
! 1340: $result = &Apache::lonxml::endredirection(); # started in &start_part
! 1341: }
1.312 albertel 1342: if ($target eq 'grade') {
1.249 albertel 1343: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 1344: !$hidden && $in_order_show) {
1.311 foxr 1345: $result.=&Apache::inputtags::grade;
1.249 albertel 1346: } else {
1347: # move any submission data to .hidden
1348: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1349: }
1.283 albertel 1350: } elsif (($target eq 'web' || $target eq 'tex') &&
1351: !$hidden && $in_order_show) {
1.159 albertel 1352: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1353: $target);
1.212 albertel 1354: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1355: $gradestatus='';
1356: }
1.311 foxr 1357: $result.=$gradestatus;
1.265 sakharuk 1358: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1359: } elsif ($target eq 'edit') {
1.311 foxr 1360: $result.=&Apache::edit::end_table();
1.159 albertel 1361: }
1362: pop @Apache::inputtags::status;
1363: $Apache::inputtags::part='';
1.295 albertel 1364: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 1365: return $result;
1.11 albertel 1366: }
1.1 albertel 1367:
1.25 albertel 1368: sub start_preduedate {
1.159 albertel 1369: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1370: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1371: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 1372: if (!$Apache::lonhomework::scantronmode &&
1373: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1374: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1375: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1376: &Apache::lonxml::get_all_text("/preduedate",$parser);
1377: }
1.24 albertel 1378: }
1.159 albertel 1379: return '';
1.24 albertel 1380: }
1381:
1.25 albertel 1382: sub end_preduedate {
1.159 albertel 1383: return '';
1.24 albertel 1384: }
1385:
1.25 albertel 1386: sub start_postanswerdate {
1.159 albertel 1387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1388: if ($target eq 'web' || $target eq 'grade') {
1.300 albertel 1389: if ($Apache::lonhomework::scantronmode ||
1390: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.159 albertel 1391: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1392: }
1393: } elsif ($target eq 'tex') {
1.234 albertel 1394: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1395: }
1396: return '';
1.24 albertel 1397: }
1398:
1.25 albertel 1399: sub end_postanswerdate {
1.159 albertel 1400: return '';
1.24 albertel 1401: }
1402:
1.25 albertel 1403: sub start_notsolved {
1.159 albertel 1404: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1405: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1406: $target eq 'tex') {
1407: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1408: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1409: if ($gradestatus =~ /^correct/ &&
1410: &Apache::response::show_answer()) {
1.159 albertel 1411: &Apache::lonxml::debug("skipping");
1412: &Apache::lonxml::get_all_text("/notsolved",$parser);
1413: }
1.24 albertel 1414: }
1.159 albertel 1415: return '';
1.24 albertel 1416: }
1417:
1.25 albertel 1418: sub end_notsolved {
1.159 albertel 1419: return '';
1.24 albertel 1420: }
1421:
1422: sub start_solved {
1.159 albertel 1423: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1424: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1425: $target eq 'tex') {
1426: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1427: if ($gradestatus !~ /^correct/ ||
1428: !&Apache::response::show_answer()) {
1.159 albertel 1429: &Apache::lonxml::get_all_text("/solved",$parser);
1430: }
1.24 albertel 1431: }
1.159 albertel 1432: return '';
1.24 albertel 1433: }
1434:
1435: sub end_solved {
1.248 albertel 1436: return '';
1437: }
1438:
1439: sub start_problemtype {
1440: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1441: my $result;
1442: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1443: $target eq 'tex' || $target eq 'analyze') {
1444: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1445: if (!defined($mode)) { $mode='show'; }
1446: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1447: my $found=0;
1448: foreach my $type (split(',',$for)) {
1449: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1450: }
1451: if ($mode eq 'show' && !$found) {
1452: &Apache::lonxml::get_all_text("/problemtype",$parser);
1453: }
1454: if ($mode eq 'hide' && $found) {
1455: &Apache::lonxml::get_all_text("/problemtype",$parser);
1456: }
1457: } elsif ($target eq 'edit') {
1458: $result .=&Apache::edit::tag_start($target,$token);
1459: $result.=&Apache::edit::select_arg('Mode:','mode',
1460: [['show','Show'],
1461: ['hide','Hide']]
1462: ,$token);
1463: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1464: [ ['exam','Exam/Quiz Problem'],
1465: ['survey','Survey'],
1466: ['problem','Homework Problem'] ]
1467: ,$token);
1468: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1469: } elsif ($target eq 'modified') {
1470: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1471: $safeeval,'mode','for');
1472: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1473: }
1474: return $result;
1475: }
1476:
1477: sub end_problemtype {
1.159 albertel 1478: return '';
1.24 albertel 1479: }
1.34 albertel 1480:
1481: sub start_startouttext {
1.159 albertel 1482: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1483: my @result=(''.'');
1484: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1485: return (@result);
1.34 albertel 1486: }
1.159 albertel 1487:
1.34 albertel 1488: sub end_startouttext {
1.159 albertel 1489: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1490: my $result='';
1491: my $text='';
1492:
1493: if ($target eq 'edit') {
1494: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1495: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1496: <td>".&mt('Delete:').
1.159 albertel 1497: &Apache::edit::deletelist($target,$token)
1498: ."</td>
1.42 albertel 1499: <td>".
1.159 albertel 1500: &Apache::edit::insertlist($target,$token).
1501: &Apache::edit::end_row().
1502: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1503: . &Apache::loncommon::helpLatexCheatsheet () .
1.255 www 1504: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1505: }
1506: if ($target eq 'modified') {
1.219 albertel 1507: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1508: }
1509: if ($target eq 'tex') {
1510: $result .= '\noindent ';
1511: }
1512: return $result;
1.34 albertel 1513: }
1.159 albertel 1514:
1.34 albertel 1515: sub start_endouttext {
1.159 albertel 1516: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1517: my $result='';
1518: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1519: if ($target eq "modified") {
1520: $result='<endouttext />'.
1521: &Apache::edit::handle_insertafter('startouttext'); }
1522: return $result;
1.34 albertel 1523: }
1.159 albertel 1524:
1.34 albertel 1525: sub end_endouttext {
1.159 albertel 1526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1527: my @result=('','');
1528: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1529: return (@result);
1.34 albertel 1530: }
1.159 albertel 1531:
1.45 albertel 1532: sub delete_startouttext {
1.159 albertel 1533: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1534: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1535: my $text=$$parser['-1']->get_text("/endouttext");
1536: my $ntoken=$$parser['-1']->get_token();
1537: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1538: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1539: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1540: # they did the last time round
1541: &Apache::lonxml::increasedepth($ntoken);
1542: &Apache::lonxml::decreasedepth($ntoken);
1543: return 1;
1.193 www 1544: }
1545:
1546: sub start_simpleeditbutton {
1547: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1548: my $result='';
1.284 albertel 1549: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 1550: ($target eq 'web') &&
1.284 albertel 1551: (&Apache::lonnet::allowed('srm',$env{'request.course.id'}))) {
1552: my $url=$env{'request.noversionuri'};
1.193 www 1553: $url=~s/\?.*$//;
1.278 albertel 1554: my ($symb) = &Apache::lonxml::whichuser();
1.194 www 1555: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.278 albertel 1556: '<a href="'.$url.'/smpedit?symb='.&Apache::lonnet::escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1.196 www 1557: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1558: }
1559: return $result;
1560: }
1561:
1562: sub end_simpleeditbutton {
1563: return '';
1.45 albertel 1564: }
1.34 albertel 1565:
1.1 albertel 1566: 1;
1567: __END__
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