Annotation of loncom/homework/structuretags.pm, revision 1.398
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.398 ! www 4: # $Id: structuretags.pm,v 1.397 2007/09/11 23:53:05 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;
1.338 albertel 39: use Apache::lonenc();
1.267 albertel 40: use Time::HiRes qw( gettimeofday tv_interval );
1.356 www 41: use lib '/home/httpd/lib/perl/';
42: use LONCAPA;
43:
1.78 harris41 44: BEGIN {
1.397 albertel 45: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','translated','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
1.10 albertel 46: }
47:
48: sub start_web {
1.326 albertel 49: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383 albertel 50: if ($target ne 'edit' && $target ne 'modified') {
51: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
52: if ($target eq 'web' || $target eq 'webgrade') {
53: return $bodytext;
54: }
55: } elsif ($target eq "edit" ) {
56: my $bodytext =
57: &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
58: my $result = &Apache::edit::tag_start($target,$token);
59: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
60: return $result;
61: } elsif ( $target eq "modified" ) {
62: return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159 albertel 63: }
64: return '';
1.10 albertel 65: }
66:
67: sub end_web {
1.44 ng 68: return '';
1.10 albertel 69: }
70:
71: sub start_tex {
1.326 albertel 72: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198 sakharuk 73: my $result='';
1.383 albertel 74: if ($target ne 'edit' && $target ne 'modified') {
75: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
76: if ($target eq 'tex') {
77: return $bodytext.' ';
78: }
79: } elsif ($target eq "edit" ) {
80: my $bodytext =
81: &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
82: my $result = &Apache::edit::tag_start($target,$token);
83: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
84: return $result;
85: } elsif ( $target eq "modified" ) {
86: return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159 albertel 87: }
1.198 sakharuk 88: return $result;;
1.10 albertel 89: }
90:
91: sub end_tex {
1.44 ng 92: return '';
1.9 albertel 93: }
94:
1.48 albertel 95: sub page_start {
1.345 albertel 96: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
97: $extra_head)=@_;
1.159 albertel 98: my %found;
1.207 albertel 99: foreach my $taginside (@$tagstack) {
1.159 albertel 100: foreach my $taglookedfor ('html','body','form') {
101: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
102: }
103: }
104:
1.343 albertel 105: if ($target eq 'tex') {
106: return
107: &Apache::londefdef::start_html($target,$token,$tagstack,
108: $parstack,$parser,$safeeval);
109: }
110:
1.374 albertel 111: $extra_head.= '
112: <script type="text/javascript">
113: function setSubmittedPart (part) {
114: this.document.lonhomework.submitted.value="part_"+part;
115: }
116: </script>
117: ';
118:
1.344 albertel 119: my %body_args;
120: if (defined($found{'html'})) {
121: $body_args{'skip_phases'}{'head'}=1;
122: } else {
1.343 albertel 123:
1.345 albertel 124: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 125:
1.379 albertel 126: $extra_head .= &Apache::londefdef::generate_css_links();
127:
1.384 albertel 128: if ($env{'request.state'} eq 'construct') {
1.343 albertel 129: $extra_head.=&Apache::edit::js_change_detection().
130: "<script type=\"text/javascript\">\n".
131: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
132: &Apache::loncommon::browser_and_searcher_javascript().
133: "\n</script>\n";
134: }
1.159 albertel 135: }
1.343 albertel 136:
1.344 albertel 137: if (defined($found{'body'})) {
138: $body_args{'skip_phases'}{'body'}=1;
139: } elsif (!defined($found{'body'})
140: && $env{'request.state'} eq 'construct') {
1.343 albertel 141: if ($target eq 'web' || $target eq 'edit') {
1.344 albertel 142: # no extra args to bodytag
1.297 albertel 143: }
1.272 albertel 144: } elsif (!defined($found{'body'})) {
1.343 albertel 145: my %add_entries;
1.159 albertel 146: my $background=&Apache::lonxml::get_param('background',$parstack,
147: $safeeval);
1.343 albertel 148: if ($background ne '' ) {
149: $add_entries{'background'} = $background;
150: }
1.344 albertel 151:
1.290 albertel 152: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
153: $safeeval);
1.344 albertel 154: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
155:
156: $body_args{'bgcolor'} = $bgcolor;
157: $body_args{'no_title'} = 1;
158: $body_args{'force_register'} = 1;
159: $body_args{'add_entries'} = \%add_entries;
1.391 albertel 160: if ($env{'environment.remote'} eq 'off'
161: && $env{'request.state'} eq 'construct') {
162: $body_args{'only_body'} = 1;
163: }
1.344 albertel 164: }
1.365 albertel 165: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 166: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
167: \%body_args);
168:
169: if (!defined($found{'body'})
170: && $env{'request.state'} ne 'construct'
171: && ($target eq 'web' || $target eq 'webgrade')) {
172:
1.367 albertel 173: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344 albertel 174: if ($symb eq '' && !$publicuser) {
175: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
176: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
177: $page_start .= $help;
1.159 albertel 178: }
1.344 albertel 179: }
180:
181: if (!defined($found{'body'})) {
1.343 albertel 182: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 183: }
1.344 albertel 184:
1.159 albertel 185: my $form_tag_start;
186: if (!defined($found{'form'})) {
1.337 albertel 187: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338 albertel 188: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327 albertel 189: $form_tag_start.=$uri.'" ';
190: if ($target eq 'edit') {
191: $form_tag_start.=&Apache::edit::form_change_detection();
192: }
1.368 albertel 193: $form_tag_start.='>'."\n";
1.355 albertel 194:
195: my $symb=&Apache::lonnet::symbread();
196: if ($symb =~ /\S/) {
197: $symb=
198: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
199: $form_tag_start.=
1.368 albertel 200: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 201: }
1.159 albertel 202: }
1.343 albertel 203: return ($page_start,$form_tag_start);
1.105 albertel 204: }
205:
1.141 matthew 206: #use Time::HiRes();
1.105 albertel 207: sub get_resource_name {
1.159 albertel 208: my ($parstack,$safeeval)=@_;
1.388 foxr 209: my $name;
1.204 albertel 210: if (defined($Apache::lonhomework::name)) {
1.388 foxr 211: $name = $Apache::lonhomework::name;
212: } else {
213: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 214: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 215: if ($name eq '') {
216: $name=&Apache::lonnet::EXT('resource.title');
217: if ($name eq 'con_lost') { $name = ''; }
218: }
219: if ($name!~/\S+/) {
220: $name=$env{'request.uri'};
221: $name=~s-.*/([^/]+)$-$1-;
222: }
223: # The name has had html tags escaped:
224:
225: $name=~s/</</gs;
226: $name=~s/>/>/gs;
227:
228: $Apache::lonhomework::name=$name;
1.204 albertel 229: }
1.159 albertel 230: return $name;
1.105 albertel 231: }
232:
233: sub setup_rndseed {
1.159 albertel 234: my ($safeeval)=@_;
235: my $rndseed;
1.367 albertel 236: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 237: if ($env{'request.state'} eq "construct"
238: || $symb eq ''
239: || $Apache::lonhomework::type eq 'practice'
240: || $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 241: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 242: ['rndseed']);
1.284 albertel 243: $rndseed=$env{'form.rndseed'};
1.159 albertel 244: if (!$rndseed) {
1.162 albertel 245: $rndseed=$Apache::lonhomework::history{'rndseed'};
246: if (!$rndseed) {
247: $rndseed=time;
248: }
1.284 albertel 249: $env{'form.rndseed'}=$rndseed;
1.162 albertel 250: }
1.374 albertel 251: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
252: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 253: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 254: srand(time);
255: $rndseed=int(rand(2100000000));
1.284 albertel 256: $env{'form.rndseed'}=$rndseed;
257: delete($env{'form.resetdata'});
258: delete($env{'form.newrandomization'});
1.159 albertel 259: }
1.187 albertel 260: if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307 albertel 261: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 262: }
1.247 albertel 263: if ($Apache::lonhomework::history{'resource.CODE'}) {
264: $rndseed=&Apache::lonnet::rndseed();
265: }
1.221 albertel 266: if ($safeeval) {
267: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 268: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 269: }
1.159 albertel 270: }
271: return $rndseed;
1.105 albertel 272: }
273:
1.268 albertel 274: sub remember_problem_state {
275: return '
1.284 albertel 276: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
277: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
278: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 279: }
280:
1.105 albertel 281: sub problem_edit_header {
1.268 albertel 282: return '<input type="hidden" name="submitted" value="edit" />'.
283: &Apache::structuretags::remember_problem_state().'
1.210 albertel 284: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 285: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328 albertel 286: <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 287: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
288: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
289: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.359 albertel 290: &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.260 albertel 291: .'</td></tr></table>'.
1.282 albertel 292: '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 293: }
294:
295: sub problem_edit_footer {
1.210 albertel 296: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 297: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348 albertel 298: &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342 albertel 299: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 300: }
301:
1.235 albertel 302: sub option {
303: my ($value,$name) = @_;
304: my $result ="<option value='".$value."' ";
1.284 albertel 305: if ($env{'form.'.$name} eq $value) {
1.235 albertel 306: $result.=" selected='on' ";
307: }
308: $result.='>';
309: return $result;
310: }
311:
1.105 albertel 312: sub problem_web_to_edit_header {
1.159 albertel 313: my ($rndseed)=@_;
1.313 albertel 314: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373 albertel 315: $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.313 albertel 316: $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 317: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
318: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 319: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270 albertel 320: <input type="text" name="rndseed" size="10" value="'.
1.175 albertel 321: $rndseed.'"
1.270 albertel 322: onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.384 albertel 323: <span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
1.315 albertel 324: my $show_all_foils_text =
325: ($Apache::lonhomework::parsing_a_task) ?
326: &mt(' Show All Instances')
327: : &mt(' Show All Foils');
328:
1.284 albertel 329: if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.384 albertel 330: $result.= ' />'.$show_all_foils_text.'</label></span>'.
1.228 www 331: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.371 albertel 332: '<hr />';
1.386 albertel 333: $result.=&mt('Apply style file: ').'
1.384 albertel 334: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
335: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
336: <input type="submit" name="clear_style_file" value="'.&mt('Clear').'" />
337: <br />';
338:
1.313 albertel 339: if (!$Apache::lonhomework::parsing_a_task) {
340: $result.="
1.235 albertel 341: <nobr>
342: Problem Status:
343: <select name='problemstate'>
1.270 albertel 344: <option value=''></option>
1.235 albertel 345: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
346: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
347: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
348: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
349: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
350: </select>
351: </nobr>
352: <nobr>
353: Problem Type:
354: <select name='problemtype'>
1.270 albertel 355: <option value=''></option>
1.242 albertel 356: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
357: ".&option('problem','problemtype').&mt("Homework problem")."</option>
358: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 359: </select>
360: </nobr>
361: <nobr>
362: Feedback Mode:
363: <select name='problemstatus'>
364: <option value=''></option>
1.242 albertel 365: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
366: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 367: </select>
368: </nobr>
1.242 albertel 369: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 370: <hr />";
1.313 albertel 371: my $numtoanalyze=$env{'form.numtoanalyze'};
372: if (!$numtoanalyze) { $numtoanalyze=20; }
373: $result.= '<input type="submit" name="problemmode" value='.
374: &mt('"Calculate answers').'" /> for
1.136 albertel 375: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 376: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
377: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 378: '',undef,undef,300).
1.210 albertel 379: '<hr />';
1.376 albertel 380: } elsif ($Apache::lonhomework::parsing_a_task) {
381: $result.="
382: <nobr>
383: Problem Status:
384: <select name='problemstate'>
385: <option value=''></option>
386: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
387: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
388: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
389: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
390: </select>
391: </nobr>
392: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
393: <hr />";
1.313 albertel 394: }
1.159 albertel 395: return $result;
1.48 albertel 396: }
397:
1.65 albertel 398: sub initialize_storage {
1.357 albertel 399: my ($given_symb) = @_;
1.353 albertel 400: undef(%Apache::lonhomework::results);
401: undef(%Apache::lonhomework::history);
1.357 albertel 402: my ($symb,$courseid,$domain,$name) =
1.367 albertel 403: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 404:
405: # anonymous users (CODEd exams) have no data
406: if ($name eq 'anonymous'
407: && !defined($domain)) {
408: return;
409: }
410:
1.333 albertel 411: if ($env{'request.state'} eq 'construct'
412: || $symb eq ''
413: || $Apache::lonhomework::type eq 'practice') {
414:
415: my $namespace = $symb || $env{'request.uri'};
416: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 417: ($env{'form.resetdata'} eq &mt('New Problem Variation')
418: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 419: $env{'form.newrandomization'} eq &mt('New Randomization')) {
420: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
421: &Apache::lonxml::debug("Attempt reset");
422: }
1.159 albertel 423: %Apache::lonhomework::history=
1.333 albertel 424: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 425: my ($temp)=keys %Apache::lonhomework::history ;
426: &Apache::lonxml::debug("Return message of $temp");
427: } else {
428: %Apache::lonhomework::history=
429: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
430: }
1.353 albertel 431:
1.159 albertel 432: #ignore error conditions
1.67 albertel 433: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 434: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 435: }
436:
437: # -------------------------------------------------------------finalize_storage
438: # Stores away the result has to a student's environment
439: # checks form.grade_ for specific values, other wises stores
440: # to the running users environment
1.285 raeburn 441: # Will increment totals for attempts, students, and corrects
442: # if running user has student role.
1.65 albertel 443: sub finalize_storage {
1.357 albertel 444: my ($given_symb) = @_;
1.159 albertel 445: my $result;
1.289 albertel 446: if (%Apache::lonhomework::results) {
1.323 albertel 447: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
448: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 449: my ($symb,$courseid,$domain,$name) =
1.367 albertel 450: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 451: if ($env{'request.state'} eq 'construct'
452: || $symb eq ''
453: || $Apache::lonhomework::type eq 'practice') {
454: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 455: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 456: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 457: $namespace,'',$domain,$name);
1.159 albertel 458: &Apache::lonxml::debug('Construct Store return message:'.$result);
459: } else {
460: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
461: $symb,$courseid,$domain,$name);
462: &Apache::lonxml::debug('Store return message:'.$result);
1.285 raeburn 463: if ($env{'request.role'} =~/^st/) {
464: &store_aggregates($symb,$courseid);
465: }
1.159 albertel 466: }
1.323 albertel 467: } else {
468: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 469: }
1.159 albertel 470: return $result;
1.65 albertel 471: }
472:
1.285 raeburn 473: # -------------------------------------------------------------store_aggregates
474: # Sends hash of values to be incremented in nohist_resourcetracker.db
475: # for the course. Increments total number of attempts, unique students
476: # and corrects for each part for an instance of a problem, as appropriate.
477: sub store_aggregates {
478: my ($symb,$courseid) = @_;
1.286 albertel 479: my %aggregate;
480: my @parts;
1.288 albertel 481: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
482: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 483: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 484: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 485: push(@parts, $1);
1.285 raeburn 486: }
487: }
1.286 albertel 488: foreach my $part (@parts) {
489: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
490: eq 'APPROX_ANS' ||
491: $Apache::lonhomework::results{'resource.'.$part.'.award'}
492: eq 'EXACT_ANS') {
1.287 albertel 493: $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285 raeburn 494: }
1.286 albertel 495: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287 albertel 496: $aggregate{$symb."\0".$part."\0users"} = 1;
1.292 raeburn 497: } else {
1.293 albertel 498: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1.292 raeburn 499: if ($last_reset) {
1.293 albertel 500: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292 raeburn 501: $aggregate{$symb."\0".$part."\0users"} = 1;
502: }
503: }
1.285 raeburn 504: }
1.287 albertel 505: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 506: }
1.292 raeburn 507: if (keys (%aggregate) > 0) {
1.289 albertel 508: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 509: $cdomain,$cname);
510: }
511: }
1.289 albertel 512:
1.65 albertel 513: sub checkout_msg {
1.211 albertel 514: my %lt=&Apache::lonlocal::texthash(
515: 'resource'=>'The resource needs to be checked out',
516: '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.',
517: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
518: 'checkout'=>'Check out Exam for Viewing',
519: 'checkout?'=>'Check out Exam?');
1.352 albertel 520: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 521: return (<<ENDCHECKOUT);
1.211 albertel 522: <h2>$lt{'resource'}</h2>
523: <p>$lt{'id_expln'}</p>
524: <font color="red">
525: <p>$lt{'warning'}</p>
1.91 albertel 526: </font>
1.352 albertel 527: <form name="checkout" method="POST" action="$uri">
1.91 albertel 528: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 529: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 530: </form>
531: ENDCHECKOUT
532: }
533:
1.252 albertel 534: sub firstaccess_msg {
1.253 albertel 535: my ($time,$symb)=@_;
536: my ($map)=&Apache::lonnet::decode_symb($symb);
537: my $foldertitle=&Apache::lonnet::gettitle($map);
538: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352 albertel 539: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252 albertel 540: return (<<ENDCHECKOUT);
1.253 albertel 541: <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>
1.352 albertel 542: <form name="markaccess" method="POST" action="$uri">
1.252 albertel 543: <input type="hidden" name="markaccess" value="yes" />
544: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
545: </form>
546: ENDCHECKOUT
547: }
548:
1.204 albertel 549: sub init_problem_globals {
550: my ($type)=@_;
551: #initialize globals
1.308 foxr 552: # For problems, we start out in part 0 (outside a <part> tag).
553: # and part 0 is used to describe the main body of the <problem>
554: #
1.204 albertel 555: if ($type eq 'problem') {
556: $Apache::inputtags::part='0';
557: @Apache::inputtags::partlist=('0');
1.266 albertel 558: $Apache::lonhomework::problemstatus=&get_problem_status('0');
559: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 560:
1.266 albertel 561: } elsif ($type eq 'library') {
1.204 albertel 562: $Apache::inputtags::part='';
563: @Apache::inputtags::partlist=();
564: $Apache::lonhomework::problemstatus='';
1.266 albertel 565: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 566:
1.304 albertel 567: } elsif ($type eq 'Task') {
568: $Apache::inputtags::part='0';
569: @Apache::inputtags::partlist=('0');
570: $Apache::lonhomework::problemstatus='';
571: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 572: }
573: @Apache::inputtags::responselist = ();
574: @Apache::inputtags::importlist = ();
575: @Apache::inputtags::previous=();
576: @Apache::inputtags::previous_version=();
577: $Apache::structuretags::printanswer='No';
578: @Apache::structuretags::whileconds=();
579: @Apache::structuretags::whilebody=();
580: @Apache::structuretags::whileline=();
581: $Apache::lonhomework::scantronmode=0;
582: undef($Apache::lonhomework::name);
1.358 albertel 583: undef($Apache::lonhomework::default_type);
584: undef($Apache::lonhomework::type);
1.204 albertel 585: }
586:
587: sub reset_problem_globals {
588: my ($type)=@_;
589: undef(%Apache::lonhomework::history);
590: undef(%Apache::lonhomework::results);
591: undef($Apache::inputtags::part);
1.208 albertel 592: #don't undef this, lonhomework.pm takes care of this, we use this to
593: #detect if we try to do 2 problems in one file
594: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 595: undef($Apache::lonhomework::name);
1.358 albertel 596: undef($Apache::lonhomework::default_type);
597: undef($Apache::lonhomework::type);
598: undef($Apache::lonhomework::scantronmode);
599: undef($Apache::lonhomework::problemstatus);
600: undef($Apache::lonhomework::ignore_response_errors);
1.204 albertel 601: }
602:
1.241 albertel 603: sub set_problem_state {
1.240 albertel 604: my ($part)=@_;
1.284 albertel 605: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 606: $Apache::lonhomework::history{"resource.$part.solved"}=
607: 'correct_by_student';
608: }
609: }
610:
1.241 albertel 611: sub get_problem_status {
612: my ($part)=@_;
1.267 albertel 613: my $problem_status;
1.284 albertel 614: if ($env{'request.state'} eq 'construct' &&
615: defined($env{'form.problemstatus'})) {
616: $problem_status=$env{'form.problemstatus'};
1.267 albertel 617: } else {
618: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
619: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 620: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 621: }
622: return $problem_status;
623: }
624:
1.9 albertel 625: sub start_problem {
1.326 albertel 626: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 627:
1.311 foxr 628: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 629: if (!$Apache::lonxml::metamode) {
630: &Apache::lonxml::startredirection();
631: }
1.311 foxr 632:
1.308 foxr 633: # Problems don't nest and we don't allow more than one <problem> in
634: # a .problem file.
635: #
1.184 albertel 636: if ( $Apache::inputtags::part ne '' ||
637: $Apache::lonhomework::parsing_a_problem) {
638: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 639: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 640: return '';
641: }
1.184 albertel 642:
643: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 644: &init_problem_globals('problem');
1.166 albertel 645:
1.284 albertel 646: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 647: $Apache::lonhomework::scantronmode=1;
648: }
1.161 albertel 649:
1.159 albertel 650: if ($target ne 'analyze') {
651: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284 albertel 652: if (($env{'request.state'} eq 'construct') &&
653: defined($env{'form.problemtype'})) {
654: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 655: }
1.332 albertel 656: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 657: }
1.164 albertel 658: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 659: my $uri=$env{'request.uri'};
1.159 albertel 660: if ($uri=~/\.(\w+)$/) {
661: $Apache::lonhomework::type=$1;
662: &Apache::lonxml::debug("Using type of $1");
663: } else {
664: $Apache::lonhomework::type='problem';
665: &Apache::lonxml::debug("Using default type, problem, :$uri:");
666: }
1.87 albertel 667: }
1.301 albertel 668: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 669:
1.363 albertel 670: &initialize_storage();
1.389 albertel 671: if ($target ne 'analyze'
672: && $env{'request.state'} eq 'construct') {
673: &set_problem_state('0');
674: }
675:
1.366 albertel 676: if ($target eq 'web') {
677: &Apache::lonxml::debug(" grading history ");
678: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
679: }
1.363 albertel 680:
1.159 albertel 681: #added vars to the scripting enviroment
1.213 albertel 682: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 683: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 684: &Apache::run::run($expression,$safeeval);
1.159 albertel 685: my $status;
686: my $accessmsg;
687:
1.343 albertel 688: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 689: my ($result,$form_tag_start);
1.354 albertel 690: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
691: || $target eq 'edit') {
1.350 albertel 692: ($result,$form_tag_start) =
693: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
694: $name);
695: }
696:
1.284 albertel 697: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 698:
699: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
700: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
701: $target eq 'tex') {
702: #handle exam checkout
703: if ($Apache::lonhomework::type eq 'exam') {
704: my $token=
705: $Apache::lonhomework::history{"resource.0.outtoken"};
1.284 albertel 706: if (($env{'form.doescheckout'}) && (!$token)) {
1.159 albertel 707: $token=&Apache::lonxml::maketoken();
708: $Apache::lonhomework::history{"resource.0.outtoken"}=
709: $token;
710: }
1.343 albertel 711: $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 712: }
1.284 albertel 713: if ($env{'form.markaccess'}) {
1.252 albertel 714: &Apache::lonnet::set_first_access('map');
715: }
1.159 albertel 716: #handle rand seed in construction space
717: my $rndseed=&setup_rndseed($safeeval);
1.367 albertel 718: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 719: if ($env{'request.state'} ne "construct" &&
720: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 721: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
722: $rndseed.'" />'.
723: '<input type="submit" name="resetdata"
1.334 albertel 724: value="'.&mt('New Problem Variation').'" />';
725: if (exists($env{'form.username'})) {
726: $form_tag_start.=
1.164 albertel 727: '<input type="hidden" name="username"
1.284 albertel 728: value="'.$env{'form.username'}.'" />';
1.334 albertel 729: }
1.333 albertel 730: if ($env{'request.role.adv'}) {
1.267 albertel 731: $form_tag_start.=
1.300 albertel 732: ' <label><input type="checkbox" name="showallfoils" ';
1.284 albertel 733: if (defined($env{'form.showallfoils'})) {
1.267 albertel 734: $form_tag_start.='checked="on"';
735: }
1.300 albertel 736: $form_tag_start.= ' />'.&mt(' Show All Foils').
737: '</label>';
1.267 albertel 738: }
739: $form_tag_start.='<hr />';
1.162 albertel 740: }
1.324 albertel 741:
742: ($status,$accessmsg,my $slot_name,my $slot) =
743: &Apache::lonhomework::check_slot_access('0','problem');
1.159 albertel 744: push (@Apache::inputtags::status,$status);
1.324 albertel 745:
1.159 albertel 746: my $expression='$external::datestatus="'.$status.'";';
747: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
748: &Apache::run::run($expression,$safeeval);
749: &Apache::lonxml::debug("Got $status");
1.324 albertel 750:
1.159 albertel 751: if (( $status eq 'CLOSED' ) ||
752: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 753: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 754: ( $status eq 'BANNED') ||
1.216 albertel 755: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 756: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 757: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 758: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
759: $style);
1.159 albertel 760: if ( $target eq "web" ) {
1.343 albertel 761: my $msg;
1.159 albertel 762: if ($status eq 'UNAVAILABLE') {
1.245 albertel 763: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 764: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 765: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 766: }
1.216 albertel 767: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 768: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 769: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 770: $msg.=&checkout_msg();
1.252 albertel 771: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 772: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 773: } elsif ($status eq 'NOT_IN_A_SLOT') {
774: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159 albertel 775: }
776: $result.=$msg.'<br />';
777: } elsif ($target eq 'tex') {
1.332 albertel 778: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
779: : '\begin{minipage}{\textwidth}';
780: $result.='\begin{document}\noindent \vskip 1 mm '.
781: $startminipage.'\vskip 0 mm';
1.159 albertel 782: if ($status eq 'UNAVAILABLE') {
1.211 albertel 783: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 784: } else {
1.211 albertel 785: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 786: }
787: }
1.324 albertel 788: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 789: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
790: $style);
1.324 albertel 791: if ($target eq 'web') {
1.375 albertel 792: $result .=
793: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 794: } elsif ($target eq 'grade') {
795: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
796: 'problem');
797: }
1.159 albertel 798: } elsif ($target eq 'web') {
1.360 albertel 799: if ($status eq 'CAN_ANSWER'
800: && $slot_name ne ''
801: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
802: # unproctored slot access, self checkin
803: &Apache::bridgetask::check_in('problem',undef,undef,
804: $slot_name);
805: }
1.368 albertel 806: $result.="\n $form_tag_start \t".
1.227 albertel 807: '<input type="hidden" name="submitted" value="yes" />';
808: # create a page header and exit
1.284 albertel 809: if ($env{'request.state'} eq "construct") {
810: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227 albertel 811: }
812: # if we are viewing someone else preserve that info
1.284 albertel 813: if (defined $env{'form.grade_symb'}) {
1.227 albertel 814: foreach my $field ('symb','courseid','domain','username') {
815: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 816: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 817: }
818: }
819: } elsif ($target eq 'tex') {
1.319 foxr 820: $result .= 'INSERTTEXFRONTMATTERHERE';
821:
1.99 sakharuk 822: }
1.159 albertel 823: } elsif ($target eq 'edit') {
1.343 albertel 824: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 825: $Apache::lonxml::warnings_error_header=
826: &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 827: my $temp=&Apache::edit::insertlist($target,$token);
828: $result.=$temp;
829: } elsif ($target eq 'modified') {
830: $result=$token->[4];
831: } else {
832: # page_start returned a starting result, delete it if we don't need it
833: $result = '';
1.99 sakharuk 834: }
1.159 albertel 835: return $result;
1.9 albertel 836: }
837:
838: sub end_problem {
1.159 albertel 839: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 840: my $result;
1.310 foxr 841:
1.321 albertel 842: if (!$Apache::lonxml::metamode) {
843: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 844: $Apache::lonxml::post_evaluate=0;
1.321 albertel 845: }
1.319 foxr 846:
847: if ($target eq 'tex') {
1.321 albertel 848: # Figure out the front matter and replace the
849: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
850: # this in end_problem because whether or not we display due
851: # dates depends on whether due dates have already been
852: # displayed in the problem parts.
853:
1.319 foxr 854: my $frontmatter = '';
855: my $startminipage = '';
856: if (not $env{'form.problem_split'}=~/yes/) {
857: $startminipage = '\begin{minipage}{\textwidth}';
858: }
859: my $id = $Apache::inputtags::part;
860: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
861: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
862: my @packages = split /,/,$packages;
863: my $allow_print_points = 0;
864: foreach my $partial_key (@packages) {
865: if ($partial_key=~m/^part_0$/) {
866: $allow_print_points=1;
867: }
868: }
869: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
870: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
871: if (lc($env{'course.'.$env{'request.course.id'}.
872: '.disableexampointprint'}) eq 'yes') {
873: $allow_print_points=0;
874: }
875: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
876: 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 ';
877: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
878: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
879:
880: # Figure out what the due date is and if we need to print
881: # it in the problem header. We have been logging the
882: # last due date written to file.
883:
884: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
885: my $duedate = POSIX::strftime("%c",localtime($duetime));
886: my $temp_file;
887: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
888:
889: # Figure out what the last printed due date is or set it
890: # to the epoch if no duedates have been printed.
891:
892: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
893: if (-e $filename) {
894: $temp_file = Apache::File->new($filename);
895: my @due_file = <$temp_file>;
896: $due_file_content = $due_file[$#due_file];
897: chomp $due_file_content;
898: }
899:
900: # We display the due date iff it is not the same as the last
901: # duedate in problem header ($due_file_content), and
902: # none of our parts displayed a duedate.
903: #
904: my $parts_with_displayduedate;
905: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
906: $parts_with_displayduedate =
907: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
908: } else {
909: $parts_with_displayduedate = 0;
910: }
911: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
912: $temp_file = Apache::File->new('>'.$filename);
913: print $temp_file "$duetime\n";
914: if (not $env{'request.symb'} =~ m/\.page_/) {
915: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
916: $frontmatter .= $begin_doc.
917: '\textit{Due date: '.$duedate.'} '.$toc_line;
918: } else {
919: $frontmatter.= $begin_doc.$toc_line;
920: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
921: }
922: } else {
1.381 albertel 923: $frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319 foxr 924: }
925: } else {
926: if (not $env{'request.symb'} =~ m/\.page_/) {
927: $frontmatter .= $begin_doc.$toc_line;
928: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
929: } else {
1.381 albertel 930: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 931: }
932: }
933: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
934: }
935:
1.159 albertel 936: my $status=$Apache::inputtags::status['-1'];
937: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
938: $target eq 'tex') {
1.249 albertel 939: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 940: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 941: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
942: &Apache::inputtags::grade;
1.324 albertel 943: } elsif ($status eq 'NEEDS_CHECKIN') {
944: # no need to grade, and don't want to hide data
1.249 albertel 945: } else {
946: # move any submission data to .hidden
947: &Apache::inputtags::hidealldata($Apache::inputtags::part);
948: }
1.159 albertel 949: } elsif ( ($target eq 'web' || $target eq 'tex') &&
950: $Apache::inputtags::part eq '0' &&
1.252 albertel 951: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 952: # if part is zero, no <part>s existed, so we need show the current
953: # grading status
954: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
955: $result.= $gradestatus;
956: }
957: if (
1.284 albertel 958: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 959: ($target eq 'answer') || ($target eq 'tex')
960: ) {
1.227 albertel 961: if ($target ne 'tex' &&
1.284 albertel 962: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 963: $result.="</form>";
1.348 albertel 964: $result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159 albertel 965: }
966: if ($target eq 'web') {
1.346 albertel 967: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 968: } elsif ($target eq 'tex') {
1.178 sakharuk 969: my $endminipage = '';
1.284 albertel 970: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 971: $endminipage = '\end{minipage}';
972: }
1.284 albertel 973: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 974: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 975: } else {
1.262 sakharuk 976: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 977: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 978: $result .= $endminipage.'\end{document} ';
979: } else {
1.382 albertel 980: $result .= $endminipage;
1.262 sakharuk 981: }
1.159 albertel 982: }
983: }
984: }
985: if ($target eq 'grade') {
986: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
987: &finalize_storage();
988: }
1.284 albertel 989: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
990: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 991: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 992: # normally we get it from above, but in CSTR
1.172 albertel 993: # we always show answer mode too.
1.159 albertel 994: }
995: } elsif ($target eq 'meta') {
996: if ($Apache::inputtags::part eq '0') {
1.179 albertel 997: @Apache::inputtags::response=();
1.159 albertel 998: $result=&Apache::response::mandatory_part_meta;
999: }
1.215 albertel 1000: $result.=&Apache::response::meta_part_order();
1.258 albertel 1001: $result.=&Apache::response::meta_response_order();
1.159 albertel 1002: } elsif ($target eq 'edit') {
1003: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1004: $result .= &problem_edit_footer();
1.320 albertel 1005: } elsif ($target eq 'modified') {
1006: $result .= $token->[2];
1.159 albertel 1007: }
1.155 albertel 1008:
1.284 albertel 1009: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1010: &Apache::inputtags::check_for_duplicate_ids();
1011: }
1.204 albertel 1012:
1013: &reset_problem_globals('problem');
1.159 albertel 1014:
1015: return $result;
1.48 albertel 1016: }
1017:
1.108 albertel 1018:
1.48 albertel 1019: sub start_library {
1.159 albertel 1020: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1021: my ($result,$form_tag_start);
1.371 albertel 1022: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1023: &init_problem_globals('library');
1024: $Apache::lonhomework::type='problem';
1025: }
1.159 albertel 1026: if ($target eq 'edit') {
1.343 albertel 1027: ($result,$form_tag_start)=
1028: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1029: 'Edit');
1030: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1031: my $temp=&Apache::edit::insertlist($target,$token);
1032: $result.=$temp;
1033: } elsif ($target eq 'modified') {
1034: $result=$token->[4];
1.340 albertel 1035: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1036: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1037: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1038: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1039: ($result,$form_tag_start)=
1040: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1041: $name);
1.159 albertel 1042: my $rndseed=&setup_rndseed($safeeval);
1.343 albertel 1043: $result.=" \n $form_tag_start".
1.159 albertel 1044: '<input type="hidden" name="submitted" value="yes" />';
1045: $result.=&problem_web_to_edit_header($rndseed);
1046: }
1047: return $result;
1.48 albertel 1048: }
1049:
1050: sub end_library {
1.159 albertel 1051: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1052: my $result='';
1053: if ($target eq 'edit') {
1054: $result=&problem_edit_footer();
1.371 albertel 1055: } elsif ($target eq 'web'
1056: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1057: && $env{'request.state'} eq "construct") {
1.349 albertel 1058: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1059: }
1.371 albertel 1060: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1061: &reset_problem_globals('library');
1062: }
1.159 albertel 1063: return $result;
1.197 www 1064: }
1065:
1066: sub start_definetag {
1.326 albertel 1067: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1068:
1069: my $result;
1070:
1071: my $name = $token->[2]->{'name'};
1.326 albertel 1072: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1073: if ($target eq 'web') {
1074: if ($name=~/^\//) {
1075: $result=
1076: '<br /><table class="LC_sty_end"><tr><th>'.
1077: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1078: } else {
1079: $result=
1080: '<br /><table class="LC_sty_begin"><tr><th>'.
1081: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1082: }
1083: $skip = &HTML::Entities::encode($skip, '<>&"');
1084: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1085: }
1086: return $result;
1087: }
1088:
1089: sub end_definetag {
1090: return '';
1.1 albertel 1091: }
1092:
1093: sub start_block {
1.201 albertel 1094: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1095:
1096: my $result;
1.1 albertel 1097:
1.339 albertel 1098: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1099: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1100: my $code = $token->[2]->{'condition'};
1.385 albertel 1101: if (defined($code) && $code ne '') {
1.137 albertel 1102: if (!$Apache::lonxml::default_homework_loaded) {
1103: &Apache::lonxml::default_homework_load($safeeval);
1104: }
1.131 albertel 1105: $result = &Apache::run::run($code,$safeeval);
1106: &Apache::lonxml::debug("block :$code: returned :$result:");
1107: } else {
1108: $result='1';
1109: }
1110: if ( ! $result ) {
1.201 albertel 1111: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1112: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1113: }
1114: $result='';
1115: } elsif ($target eq 'edit') {
1116: $result .=&Apache::edit::tag_start($target,$token);
1117: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1118: $token,40);
1119: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1120: } elsif ($target eq 'modified') {
1121: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1122: $safeeval,'condition');
1123: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1124: }
1.131 albertel 1125: return $result;
1.1 albertel 1126: }
1127:
1128: sub end_block {
1.167 www 1129: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1130: my $result;
1131: if ($target eq "edit") {
1132: $result.= &Apache::edit::tag_end($target,$token,'');
1133: }
1134: return $result;
1135: }
1136:
1137: sub start_languageblock {
1.201 albertel 1138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1139:
1140: my $result;
1141:
1.339 albertel 1142: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1143: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1144: my $include = $token->[2]->{'include'};
1145: my $exclude = $token->[2]->{'exclude'};
1.398 ! www 1146: my @preferred_languages=&Apache::loncommon::preferred_languages();
1.394 www 1147: # This should not even happen, since we should at least have the server language
1.398 ! www 1148: if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
! 1149: # Now loop over all languages in order of preference
! 1150: foreach my $preferred_language (@preferred_languages) {
1.394 www 1151: # If the languageblock has no arguments, show the contents
1.398 ! www 1152: $result='1';
1.394 www 1153: # Do we have an include argument?
1.398 ! www 1154: if ($include) {
1.394 www 1155: # If include is specified, by default, don't render the block
1.398 ! www 1156: $result='';
! 1157: foreach my $included_language (split(/\,/,$include)) {
1.394 www 1158: # ... but if my preferred language is included, render it
1.398 ! www 1159: if ($included_language eq $preferred_language) {
! 1160: $result='1';
! 1161: last;
! 1162: }
! 1163: }
! 1164: }
1.394 www 1165: # Do we have an exclude argument?
1.398 ! www 1166: if ($exclude) {
! 1167: $result='1';
! 1168: foreach my $excluded_language (split(/\,/,$exclude)) {
! 1169: if ($excluded_language eq $preferred_language) {
! 1170: $result='0';
! 1171: last;
! 1172: }
! 1173: }
! 1174: }
! 1175: }
1.201 albertel 1176: if ( ! $result ) {
1177: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1178: $style);
1179: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1180: }
1181: $result='';
1.167 www 1182: } elsif ($target eq 'edit') {
1183: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1184: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1185: $token,40);
1.211 albertel 1186: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1187: $token,40);
1188: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1189: } elsif ($target eq 'modified') {
1190: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1191: $safeeval,'include',
1192: 'exclude');
1.167 www 1193: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1194: }
1195: return $result;
1196: }
1197:
1198: sub end_languageblock {
1.170 www 1199: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1200: my $result;
1.201 albertel 1201: if ($target eq "edit") {
1.170 www 1202: $result.= &Apache::edit::tag_end($target,$token,'');
1203: }
1204: return $result;
1205: }
1206:
1.397 albertel 1207: {
1208: my %available_texts;
1209: sub start_translated {
1210: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1211: &Apache::lonxml::register('Apache::structuretags',('lang'));
1212: undef(%available_texts);
1213: }
1214:
1215: sub end_translated {
1216: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1217: my $result;
1218: #show the translation on viewable targets
1219: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1220: # or non-viewable targets, if it's embedded in something that
1221: # wants the output
1222: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1223: && &Apache::lonxml::in_redirection() ) ) {
1224: my @possibilities = keys(%available_texts);
1225: my $which =
1226: &Apache::loncommon::languages(\@possibilities) || 'default';
1227: $result = $available_texts{$which};
1228: }
1229: undef(%available_texts);
1230: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1231: return $result;
1232: }
1233:
1234:
1235: sub start_lang {
1236: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1237: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1238: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1239: &Apache::lonxml::startredirection();
1240: }
1241: return '';
1242: }
1243:
1244: sub end_lang {
1245: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1246: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1247: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1248: my $result = &Apache::lonxml::endredirection();
1249: my $which = &Apache::lonxml::get_param('which',$parstack,
1250: $safeeval);
1251: $available_texts{$which} = $result;
1252: }
1253: return '';
1254: }
1255: }
1256:
1.170 www 1257: sub start_instructorcomment {
1.201 albertel 1258: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1259:
1260: my $result;
1261:
1.339 albertel 1262: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1263: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284 albertel 1264: $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
1265: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1266: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1267: $parser,$style);
1.170 www 1268: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1269: }
1270: $result='';
1271: } elsif ($target eq 'edit') {
1272: $result .=&Apache::edit::tag_start($target,$token);
1273: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1274: }
1275: return $result;
1276: }
1277:
1278: sub end_instructorcomment {
1.159 albertel 1279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1280: my $result;
1281: if ($target eq "edit") {
1282: $result.= &Apache::edit::tag_end($target,$token,'');
1283: }
1284: return $result;
1.4 tsai 1285: }
1286:
1287: sub start_while {
1.326 albertel 1288: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1289:
1.160 albertel 1290: my $result;
1.339 albertel 1291: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1292: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1293: my $code = $token->[2]->{'condition'};
1.4 tsai 1294:
1.160 albertel 1295: push( @Apache::structuretags::whileconds, $code);
1296: if (!$Apache::lonxml::default_homework_loaded) {
1297: &Apache::lonxml::default_homework_load($safeeval);
1298: }
1299: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1300: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1301: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1302: push( @Apache::structuretags::whileline, $token->[5]);
1303: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1304: if ( $result ) {
1305: &Apache::lonxml::newparser($parser,\$bodytext);
1306: }
1307: } elsif ($target eq 'edit') {
1308: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1309: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1310: $token,40);
1311: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1312: } elsif ($target eq 'modified') {
1313: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1314: $safeeval,'condition');
1315: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1316: }
1.160 albertel 1317: return $result;
1.4 tsai 1318: }
1319:
1320: sub end_while {
1.159 albertel 1321: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1322: my $result;
1323:
1.339 albertel 1324: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1325: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1326: my $code = pop(@Apache::structuretags::whileconds);
1327: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1328: my $line = pop(@Apache::structuretags::whileline);
1329: my $return = &Apache::run::run($code,$safeeval);
1330: my $starttime=time;
1331: my $error=0;
1332: while ($return) {
1333: if (time-$starttime >
1334: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1335: $return = 0; $error=1; next;
1.161 albertel 1336: }
1337: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1338: if ($target eq 'grade' || $target eq 'answer' ||
1339: $target eq 'analyze') {
1340: # grade/answer/analyze should produce no output but if we
1341: # are redirecting, the redirecter should know what to do
1342: # with the output
1343: if (!$Apache::lonxml::redirection) { undef($result); }
1344: }
1.161 albertel 1345: $return = &Apache::run::run($code,$safeeval);
1346: }
1347: if ($error) {
1.270 albertel 1348: &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 1349: }
1350: } elsif ($target eq "edit") {
1351: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1352: }
1.160 albertel 1353: return $result;
1.1 albertel 1354: }
1.6 tsai 1355:
1.160 albertel 1356: # <randomlist show="1">
1.6 tsai 1357: # <tag1>..</tag1>
1358: # <tag2>..</tag2>
1359: # <tag3>..</tag3>
1.160 albertel 1360: # ...
1.6 tsai 1361: # </randomlist>
1362: sub start_randomlist {
1.326 albertel 1363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1364: my $result;
1.339 albertel 1365: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1366: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1367: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1368: my $b_parser= HTML::LCParser->new(\$body);
1369: $b_parser->xml_mode(1);
1370: $b_parser->marked_sections(1);
1.159 albertel 1371: my $b_tok;
1372: my @randomlist;
1373: my $list_item;
1374: while($b_tok = $b_parser->get_token() ) {
1375: if($b_tok->[0] eq 'S') { # start tag
1376: # get content of the tag until matching end tag
1377: # get all text upto the matching tag
1378: # and push the content into @randomlist
1379: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1380: $b_parser);
1381: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1382: push(@randomlist,$list_item);
1383: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1384: # $list_item</b>";
1385: }
1386: if($b_tok->[0] eq 'T') { # text
1387: # what to do with text in between tags?
1388: # print "<b>TEXT $b_tok->[1]</b><br />";
1389: }
1390: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1391: # print "<b>END-TAG $b_tok->[1]</b><br />";
1392: # }
1393: }
1.303 albertel 1394: if (@randomlist) {
1395: my @idx_arr = (0 .. $#randomlist);
1396: &Apache::structuretags::shuffle(\@idx_arr);
1397: my $bodytext = '';
1398: my $show=$#randomlist;
1399: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1400: $showarg--;
1401: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1402: for(0 .. $show) {
1403: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1404: }
1405: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1406: }
1407: } elsif ($target eq 'edit' ) {
1408: $result .=&Apache::edit::tag_start($target,$token);
1409: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1410: $token,5);
1411: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1412: } elsif ($target eq 'modified' ) {
1413: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1414: $safeeval,'show');
1415: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1416: }
1417: return $result;
1.7 tsai 1418: }
1419:
1420: sub shuffle {
1421: my $a=shift;
1422: my $i;
1.303 albertel 1423: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1424: &Apache::response::pushrandomnumber();
1.159 albertel 1425: for($i=@$a;--$i;) {
1426: my $j=int(&Math::Random::random_uniform() * ($i+1));
1427: next if $i == $j;
1428: @$a[$i,$j] = @$a[$j,$i];
1429: }
1.251 albertel 1430: &Apache::response::poprandomnumber();
1.7 tsai 1431: }
1.6 tsai 1432: }
1433:
1434: sub end_randomlist {
1.159 albertel 1435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1436: my $result;
1437: if ($target eq 'edit' ) {
1438: $result=&Apache::edit::tag_end($target,$token,
1439: 'End Randomly Parsed Block');
1440: }
1441: return $result;
1.6 tsai 1442: }
1443:
1.283 albertel 1444: sub ordered_show_check {
1445: my $last_part=$Apache::inputtags::partlist[-2];
1446: my $in_order=
1447: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1448: my $in_order_show=1;
1449: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1450: $in_order_show=&Apache::response::check_status($last_part);
1451: }
1452: return $in_order_show;
1453: }
1454:
1.11 albertel 1455: sub start_part {
1.326 albertel 1456: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 1457: if (!$Apache::lonxml::metamode) {
1458: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1459: # duedates.
1460: }
1.159 albertel 1461: my $result='';
1.386 albertel 1462: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 1463: $Apache::inputtags::part=$id;
1.177 albertel 1464: push(@Apache::inputtags::partlist,$id);
1465: @Apache::inputtags::response=();
1.159 albertel 1466: @Apache::inputtags::previous=();
1467: @Apache::inputtags::previous_version=();
1.241 albertel 1468: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1469: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1470: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1471: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1472: my $in_order_show=&ordered_show_check();
1.214 albertel 1473: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1474: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1475: &Apache::run::run($expression,$safeeval);
1.159 albertel 1476:
1477: if ($target eq 'meta') {
1.224 www 1478: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1479: return &Apache::response::mandatory_part_meta.
1480: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1481: } elsif ($target eq 'web' || $target eq 'grade' ||
1482: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1483: if ($hidden || !$in_order_show) {
1.326 albertel 1484: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 1485: } else {
1486: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1487: push (@Apache::inputtags::status,$status);
1488: my $expression='$external::datestatus="'.$status.'";';
1489: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1490: &Apache::run::run($expression,$safeeval);
1.284 albertel 1491: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1492: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1493: }
1.216 albertel 1494: if (( $status eq 'CLOSED' ) ||
1495: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1496: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1497: ( $status eq 'BANNED') ||
1498: ( $status eq 'UNAVAILABLE') ||
1499: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1500: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
1501: $style);
1.159 albertel 1502: if ( $target eq "web" ) {
1.211 albertel 1503: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1504: } elsif ( $target eq 'tex' ) {
1.284 albertel 1505: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1506: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1507: } else {
1.211 albertel 1508: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1509: }
1.159 albertel 1510: }
1511: } else {
1512: if ($target eq 'tex') {
1.284 albertel 1513: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1514: if ($$tagstack[-2] eq 'td') {
1.388 foxr 1515: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 1516: } else {
1517: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1518: }
1.195 sakharuk 1519: }
1.159 albertel 1520: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1521: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1522: my @allkeys = split /,/,$allkeys;
1523: my $allow_print_points = 0;
1524: foreach my $partial_key (@allkeys) {
1.230 albertel 1525: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1526: if ($1 ne '0') {$allow_print_points=1;}
1527: }
1528: }
1.275 albertel 1529: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1530: if (defined($maxtries) && $maxtries < 0) {
1531: $allow_print_points=0;
1532: }
1.302 albertel 1533: if (lc($env{'course.'.$env{'request.course.id'}.
1534: '.disableexampointprint'}) eq 'yes') {
1535: $allow_print_points=0;
1536: }
1.222 sakharuk 1537: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1538: } elsif ($target eq 'web') {
1.356 www 1539: $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159 albertel 1540: }
1541: }
1542: }
1543: } elsif ($target eq 'edit') {
1544: $result.=&Apache::edit::tag_start($target,$token);
1545: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1546: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1547: ' '.
1548: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1549: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1550: } elsif ($target eq 'modified') {
1551: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1552: $safeeval,'id','display');
1.159 albertel 1553: if ($constructtag) {
1.225 albertel 1554: #limiting ids to only letters numbers, and space
1.224 www 1555: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1556: $result = &Apache::edit::rebuild_tag($token);
1557: }
1558: }
1559: return $result;
1.11 albertel 1560: }
1561:
1562: sub end_part {
1.159 albertel 1563: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1564: &Apache::lonxml::debug("in end_part $target ");
1565: my $status=$Apache::inputtags::status['-1'];
1566: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 1567: my $in_order_show=&ordered_show_check();
1.321 albertel 1568: my $result;
1569: if (!$Apache::lonxml::metamode) {
1570: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 1571: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1572: }
1.312 albertel 1573: if ($target eq 'grade') {
1.249 albertel 1574: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 1575: !$hidden && $in_order_show) {
1.311 foxr 1576: $result.=&Apache::inputtags::grade;
1.249 albertel 1577: } else {
1578: # move any submission data to .hidden
1579: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1580: }
1.283 albertel 1581: } elsif (($target eq 'web' || $target eq 'tex') &&
1582: !$hidden && $in_order_show) {
1.159 albertel 1583: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1584: $target);
1.212 albertel 1585: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1586: $gradestatus='';
1587: }
1.311 foxr 1588: $result.=$gradestatus;
1.265 sakharuk 1589: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1590: } elsif ($target eq 'edit') {
1.311 foxr 1591: $result.=&Apache::edit::end_table();
1.322 albertel 1592: } elsif ($target eq 'modified') {
1593: $result .= $token->[2];
1.159 albertel 1594: }
1595: pop @Apache::inputtags::status;
1596: $Apache::inputtags::part='';
1.295 albertel 1597: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 1598: return $result;
1.11 albertel 1599: }
1.1 albertel 1600:
1.25 albertel 1601: sub start_preduedate {
1.326 albertel 1602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 1603: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1604: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 1605: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 1606: if (!$Apache::lonhomework::scantronmode &&
1607: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1608: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1609: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 1610: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 1611: }
1.24 albertel 1612: }
1.159 albertel 1613: return '';
1.24 albertel 1614: }
1615:
1.25 albertel 1616: sub end_preduedate {
1.159 albertel 1617: return '';
1.24 albertel 1618: }
1619:
1.369 foxr 1620: # In all the modes where <postanswerdate> text is
1621: # displayable, all we do is eat up the text between the start/stop
1622: # tags if the conditions are not right to display it.
1.25 albertel 1623: sub start_postanswerdate {
1.326 albertel 1624: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 1625: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
1626: &Apache::lonnet::allowed('pav',
1627: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 1628: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 1629: $target eq 'tex' ) {
1.300 albertel 1630: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 1631: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
1632: (($target eq 'tex') && !$pav)) {
1.326 albertel 1633: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 1634: }
1635: }
1636: return '';
1.24 albertel 1637: }
1638:
1.25 albertel 1639: sub end_postanswerdate {
1.159 albertel 1640: return '';
1.24 albertel 1641: }
1642:
1.25 albertel 1643: sub start_notsolved {
1.326 albertel 1644: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1645: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 1646: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 1647: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1648: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1649: if ($gradestatus =~ /^correct/ &&
1650: &Apache::response::show_answer()) {
1.159 albertel 1651: &Apache::lonxml::debug("skipping");
1.326 albertel 1652: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 1653: }
1.24 albertel 1654: }
1.159 albertel 1655: return '';
1.24 albertel 1656: }
1657:
1.25 albertel 1658: sub end_notsolved {
1.159 albertel 1659: return '';
1.24 albertel 1660: }
1661:
1662: sub start_solved {
1.326 albertel 1663: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1664: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1665: $target eq 'tex') {
1666: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1667: if ($gradestatus !~ /^correct/ ||
1668: !&Apache::response::show_answer()) {
1.326 albertel 1669: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 1670: }
1.24 albertel 1671: }
1.159 albertel 1672: return '';
1.24 albertel 1673: }
1674:
1675: sub end_solved {
1.248 albertel 1676: return '';
1677: }
1678:
1679: sub start_problemtype {
1.326 albertel 1680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 1681: my $result;
1.339 albertel 1682: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1683: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 1684: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1685: if (!defined($mode)) { $mode='show'; }
1686: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1687: my $found=0;
1688: foreach my $type (split(',',$for)) {
1689: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1690: }
1691: if ($mode eq 'show' && !$found) {
1.326 albertel 1692: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1693: }
1694: if ($mode eq 'hide' && $found) {
1.326 albertel 1695: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1696: }
1697: } elsif ($target eq 'edit') {
1698: $result .=&Apache::edit::tag_start($target,$token);
1699: $result.=&Apache::edit::select_arg('Mode:','mode',
1700: [['show','Show'],
1701: ['hide','Hide']]
1702: ,$token);
1703: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1704: [ ['exam','Exam/Quiz Problem'],
1705: ['survey','Survey'],
1706: ['problem','Homework Problem'] ]
1707: ,$token);
1708: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1709: } elsif ($target eq 'modified') {
1710: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1711: $safeeval,'mode','for');
1712: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1713: }
1714: return $result;
1715: }
1716:
1717: sub end_problemtype {
1.159 albertel 1718: return '';
1.24 albertel 1719: }
1.34 albertel 1720:
1721: sub start_startouttext {
1.159 albertel 1722: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1723: my @result=(''.'');
1724: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1725: return (@result);
1.34 albertel 1726: }
1.159 albertel 1727:
1.34 albertel 1728: sub end_startouttext {
1.326 albertel 1729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1730: my $result='';
1731: my $text='';
1732:
1733: if ($target eq 'edit') {
1.326 albertel 1734: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211 albertel 1735: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1736: <td>".&mt('Delete:').
1.159 albertel 1737: &Apache::edit::deletelist($target,$token)
1738: ."</td>
1.42 albertel 1739: <td>".
1.159 albertel 1740: &Apache::edit::insertlist($target,$token).
1.362 albertel 1741: '</td><td align="right" valign="top">' .
1742: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 1743: &Apache::edit::end_row().
1.362 albertel 1744: &Apache::edit::start_spanning_row()."\n".
1.255 www 1745: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1746: }
1747: if ($target eq 'modified') {
1.219 albertel 1748: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1749: }
1750: if ($target eq 'tex') {
1751: $result .= '\noindent ';
1752: }
1753: return $result;
1.34 albertel 1754: }
1.159 albertel 1755:
1.34 albertel 1756: sub start_endouttext {
1.159 albertel 1757: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1758: my $result='';
1759: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1760: if ($target eq "modified") {
1761: $result='<endouttext />'.
1.377 albertel 1762: &Apache::edit::handle_insertafter('startouttext');
1763: }
1.159 albertel 1764: return $result;
1.34 albertel 1765: }
1.159 albertel 1766:
1.34 albertel 1767: sub end_endouttext {
1.159 albertel 1768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1769: my @result=('','');
1770: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1771: return (@result);
1.34 albertel 1772: }
1.159 albertel 1773:
1.45 albertel 1774: sub delete_startouttext {
1.326 albertel 1775: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1776: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 1777: my $text=$$parser['-1']->get_text("/endouttext");
1778: my $ntoken=$$parser['-1']->get_token();
1779: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1780: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1781: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1782: # they did the last time round
1783: &Apache::lonxml::increasedepth($ntoken);
1784: &Apache::lonxml::decreasedepth($ntoken);
1785: return 1;
1.193 www 1786: }
1787:
1788: sub start_simpleeditbutton {
1789: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1790: my $result='';
1.284 albertel 1791: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 1792: ($target eq 'web') &&
1.330 albertel 1793: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 1794: my $url=$env{'request.noversionuri'};
1.193 www 1795: $url=~s/\?.*$//;
1.367 albertel 1796: my ($symb) = &Apache::lonnet::whichuser();
1.194 www 1797: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356 www 1798: '<a href="'.$url.'/smpedit?symb='.&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 1799: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1800: }
1801: return $result;
1802: }
1803:
1804: sub end_simpleeditbutton {
1805: return '';
1.45 albertel 1806: }
1.34 albertel 1807:
1.1 albertel 1808: 1;
1809: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>