Annotation of loncom/homework/structuretags.pm, revision 1.402
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.402 ! albertel 4: # $Id: structuretags.pm,v 1.401 2007/10/09 23:32:57 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 $result;;
1.10 albertel 89: }
90:
91: sub end_tex {
1.44 ng 92: return '';
1.9 albertel 93: }
94:
1.400 albertel 95: sub homework_js {
96: return &Apache::loncommon::resize_textarea_js().
97: <<'JS';
98: <script type="text/javascript">
99: function setSubmittedPart (part) {
100: this.document.lonhomework.submitted.value="part_"+part;
101: }
102:
103: function image_response_click (which, e) {
104: init_geometry();
105: if (!e) { e = window.event; } //IE
106: var input_element = document.lonhomework.elements[which];
1.401 albertel 107: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 108: var token = token_element.value;
1.401 albertel 109: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 110: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
111: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
112: var click = x+':'+y;
113: input_element.value = click;
114: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
115: }
116: </script>
117: JS
118: }
119:
1.48 albertel 120: sub page_start {
1.345 albertel 121: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
122: $extra_head)=@_;
1.159 albertel 123: my %found;
1.207 albertel 124: foreach my $taginside (@$tagstack) {
1.159 albertel 125: foreach my $taglookedfor ('html','body','form') {
126: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
127: }
128: }
129:
1.343 albertel 130: if ($target eq 'tex') {
131: return
132: &Apache::londefdef::start_html($target,$token,$tagstack,
133: $parstack,$parser,$safeeval);
134: }
135:
1.400 albertel 136: $extra_head .= &homework_js();
1.374 albertel 137:
1.344 albertel 138: my %body_args;
139: if (defined($found{'html'})) {
140: $body_args{'skip_phases'}{'head'}=1;
141: } else {
1.343 albertel 142:
1.345 albertel 143: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 144:
1.379 albertel 145: $extra_head .= &Apache::londefdef::generate_css_links();
146:
1.384 albertel 147: if ($env{'request.state'} eq 'construct') {
1.343 albertel 148: $extra_head.=&Apache::edit::js_change_detection().
149: "<script type=\"text/javascript\">\n".
150: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
151: &Apache::loncommon::browser_and_searcher_javascript().
152: "\n</script>\n";
153: }
1.159 albertel 154: }
1.343 albertel 155:
1.344 albertel 156: if (defined($found{'body'})) {
157: $body_args{'skip_phases'}{'body'}=1;
158: } elsif (!defined($found{'body'})
159: && $env{'request.state'} eq 'construct') {
1.343 albertel 160: if ($target eq 'web' || $target eq 'edit') {
1.402 ! albertel 161: if ($env{'environment.remote'} ne 'off') {
! 162: $body_args{'only_body'} = 1;
! 163: }
1.297 albertel 164: }
1.272 albertel 165: } elsif (!defined($found{'body'})) {
1.343 albertel 166: my %add_entries;
1.159 albertel 167: my $background=&Apache::lonxml::get_param('background',$parstack,
168: $safeeval);
1.343 albertel 169: if ($background ne '' ) {
170: $add_entries{'background'} = $background;
171: }
1.344 albertel 172:
1.290 albertel 173: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
174: $safeeval);
1.344 albertel 175: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
176:
177: $body_args{'bgcolor'} = $bgcolor;
178: $body_args{'no_title'} = 1;
179: $body_args{'force_register'} = 1;
180: $body_args{'add_entries'} = \%add_entries;
1.391 albertel 181: if ($env{'environment.remote'} eq 'off'
182: && $env{'request.state'} eq 'construct') {
183: $body_args{'only_body'} = 1;
184: }
1.344 albertel 185: }
1.365 albertel 186: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 187: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
188: \%body_args);
189:
190: if (!defined($found{'body'})
191: && $env{'request.state'} ne 'construct'
192: && ($target eq 'web' || $target eq 'webgrade')) {
193:
1.367 albertel 194: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344 albertel 195: if ($symb eq '' && !$publicuser) {
196: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
197: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
198: $page_start .= $help;
1.159 albertel 199: }
1.344 albertel 200: }
201:
202: if (!defined($found{'body'})) {
1.343 albertel 203: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 204: }
1.344 albertel 205:
1.159 albertel 206: my $form_tag_start;
207: if (!defined($found{'form'})) {
1.337 albertel 208: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338 albertel 209: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327 albertel 210: $form_tag_start.=$uri.'" ';
211: if ($target eq 'edit') {
212: $form_tag_start.=&Apache::edit::form_change_detection();
213: }
1.368 albertel 214: $form_tag_start.='>'."\n";
1.355 albertel 215:
216: my $symb=&Apache::lonnet::symbread();
217: if ($symb =~ /\S/) {
218: $symb=
219: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
220: $form_tag_start.=
1.368 albertel 221: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 222: }
1.159 albertel 223: }
1.343 albertel 224: return ($page_start,$form_tag_start);
1.105 albertel 225: }
226:
1.141 matthew 227: #use Time::HiRes();
1.105 albertel 228: sub get_resource_name {
1.159 albertel 229: my ($parstack,$safeeval)=@_;
1.388 foxr 230: my $name;
1.204 albertel 231: if (defined($Apache::lonhomework::name)) {
1.388 foxr 232: $name = $Apache::lonhomework::name;
233: } else {
234: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 235: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 236: if ($name eq '') {
237: $name=&Apache::lonnet::EXT('resource.title');
238: if ($name eq 'con_lost') { $name = ''; }
239: }
240: if ($name!~/\S+/) {
241: $name=$env{'request.uri'};
242: $name=~s-.*/([^/]+)$-$1-;
243: }
244: # The name has had html tags escaped:
245:
246: $name=~s/</</gs;
247: $name=~s/>/>/gs;
248:
249: $Apache::lonhomework::name=$name;
1.204 albertel 250: }
1.159 albertel 251: return $name;
1.105 albertel 252: }
253:
254: sub setup_rndseed {
1.159 albertel 255: my ($safeeval)=@_;
256: my $rndseed;
1.367 albertel 257: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 258: if ($env{'request.state'} eq "construct"
259: || $symb eq ''
260: || $Apache::lonhomework::type eq 'practice'
261: || $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 262: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 263: ['rndseed']);
1.284 albertel 264: $rndseed=$env{'form.rndseed'};
1.159 albertel 265: if (!$rndseed) {
1.162 albertel 266: $rndseed=$Apache::lonhomework::history{'rndseed'};
267: if (!$rndseed) {
268: $rndseed=time;
269: }
1.284 albertel 270: $env{'form.rndseed'}=$rndseed;
1.162 albertel 271: }
1.374 albertel 272: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
273: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 274: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 275: srand(time);
276: $rndseed=int(rand(2100000000));
1.284 albertel 277: $env{'form.rndseed'}=$rndseed;
278: delete($env{'form.resetdata'});
279: delete($env{'form.newrandomization'});
1.159 albertel 280: }
1.187 albertel 281: if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307 albertel 282: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 283: }
1.247 albertel 284: if ($Apache::lonhomework::history{'resource.CODE'}) {
285: $rndseed=&Apache::lonnet::rndseed();
286: }
1.221 albertel 287: if ($safeeval) {
288: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 289: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 290: }
1.159 albertel 291: }
292: return $rndseed;
1.105 albertel 293: }
294:
1.268 albertel 295: sub remember_problem_state {
296: return '
1.284 albertel 297: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
298: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
299: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 300: }
301:
1.105 albertel 302: sub problem_edit_header {
1.268 albertel 303: return '<input type="hidden" name="submitted" value="edit" />'.
304: &Apache::structuretags::remember_problem_state().'
1.210 albertel 305: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 306: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328 albertel 307: <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 308: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
309: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
310: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.359 albertel 311: &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.260 albertel 312: .'</td></tr></table>'.
1.282 albertel 313: '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 314: }
315:
316: sub problem_edit_footer {
1.210 albertel 317: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 318: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348 albertel 319: &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342 albertel 320: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 321: }
322:
1.235 albertel 323: sub option {
324: my ($value,$name) = @_;
325: my $result ="<option value='".$value."' ";
1.284 albertel 326: if ($env{'form.'.$name} eq $value) {
1.235 albertel 327: $result.=" selected='on' ";
328: }
329: $result.='>';
330: return $result;
331: }
332:
1.105 albertel 333: sub problem_web_to_edit_header {
1.159 albertel 334: my ($rndseed)=@_;
1.313 albertel 335: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373 albertel 336: $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.313 albertel 337: $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 338: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
339: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 340: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270 albertel 341: <input type="text" name="rndseed" size="10" value="'.
1.175 albertel 342: $rndseed.'"
1.270 albertel 343: onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.384 albertel 344: <span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
1.315 albertel 345: my $show_all_foils_text =
346: ($Apache::lonhomework::parsing_a_task) ?
347: &mt(' Show All Instances')
348: : &mt(' Show All Foils');
349:
1.284 albertel 350: if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.384 albertel 351: $result.= ' />'.$show_all_foils_text.'</label></span>'.
1.228 www 352: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.371 albertel 353: '<hr />';
1.386 albertel 354: $result.=&mt('Apply style file: ').'
1.384 albertel 355: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
356: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
357: <input type="submit" name="clear_style_file" value="'.&mt('Clear').'" />
358: <br />';
359:
1.313 albertel 360: if (!$Apache::lonhomework::parsing_a_task) {
361: $result.="
1.235 albertel 362: <nobr>
363: Problem Status:
364: <select name='problemstate'>
1.270 albertel 365: <option value=''></option>
1.235 albertel 366: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
367: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
368: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
369: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
370: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
371: </select>
372: </nobr>
373: <nobr>
374: Problem Type:
375: <select name='problemtype'>
1.270 albertel 376: <option value=''></option>
1.242 albertel 377: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
378: ".&option('problem','problemtype').&mt("Homework problem")."</option>
379: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 380: </select>
381: </nobr>
382: <nobr>
383: Feedback Mode:
384: <select name='problemstatus'>
385: <option value=''></option>
1.242 albertel 386: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
387: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 388: </select>
389: </nobr>
1.242 albertel 390: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 391: <hr />";
1.313 albertel 392: my $numtoanalyze=$env{'form.numtoanalyze'};
393: if (!$numtoanalyze) { $numtoanalyze=20; }
394: $result.= '<input type="submit" name="problemmode" value='.
395: &mt('"Calculate answers').'" /> for
1.136 albertel 396: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 397: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
398: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 399: '',undef,undef,300).
1.210 albertel 400: '<hr />';
1.376 albertel 401: } elsif ($Apache::lonhomework::parsing_a_task) {
402: $result.="
403: <nobr>
404: Problem Status:
405: <select name='problemstate'>
406: <option value=''></option>
407: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
408: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
409: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
410: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
411: </select>
412: </nobr>
413: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
414: <hr />";
1.313 albertel 415: }
1.159 albertel 416: return $result;
1.48 albertel 417: }
418:
1.65 albertel 419: sub initialize_storage {
1.357 albertel 420: my ($given_symb) = @_;
1.353 albertel 421: undef(%Apache::lonhomework::results);
422: undef(%Apache::lonhomework::history);
1.357 albertel 423: my ($symb,$courseid,$domain,$name) =
1.367 albertel 424: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 425:
426: # anonymous users (CODEd exams) have no data
427: if ($name eq 'anonymous'
428: && !defined($domain)) {
429: return;
430: }
431:
1.333 albertel 432: if ($env{'request.state'} eq 'construct'
433: || $symb eq ''
434: || $Apache::lonhomework::type eq 'practice') {
435:
436: my $namespace = $symb || $env{'request.uri'};
437: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 438: ($env{'form.resetdata'} eq &mt('New Problem Variation')
439: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 440: $env{'form.newrandomization'} eq &mt('New Randomization')) {
441: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
442: &Apache::lonxml::debug("Attempt reset");
443: }
1.159 albertel 444: %Apache::lonhomework::history=
1.333 albertel 445: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 446: my ($temp)=keys %Apache::lonhomework::history ;
447: &Apache::lonxml::debug("Return message of $temp");
448: } else {
449: %Apache::lonhomework::history=
450: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
451: }
1.353 albertel 452:
1.159 albertel 453: #ignore error conditions
1.67 albertel 454: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 455: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 456: }
457:
458: # -------------------------------------------------------------finalize_storage
459: # Stores away the result has to a student's environment
460: # checks form.grade_ for specific values, other wises stores
461: # to the running users environment
1.285 raeburn 462: # Will increment totals for attempts, students, and corrects
463: # if running user has student role.
1.65 albertel 464: sub finalize_storage {
1.357 albertel 465: my ($given_symb) = @_;
1.159 albertel 466: my $result;
1.289 albertel 467: if (%Apache::lonhomework::results) {
1.323 albertel 468: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
469: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 470: my ($symb,$courseid,$domain,$name) =
1.367 albertel 471: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 472: if ($env{'request.state'} eq 'construct'
473: || $symb eq ''
474: || $Apache::lonhomework::type eq 'practice') {
475: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 476: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 477: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 478: $namespace,'',$domain,$name);
1.159 albertel 479: &Apache::lonxml::debug('Construct Store return message:'.$result);
480: } else {
481: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
482: $symb,$courseid,$domain,$name);
483: &Apache::lonxml::debug('Store return message:'.$result);
1.285 raeburn 484: if ($env{'request.role'} =~/^st/) {
485: &store_aggregates($symb,$courseid);
486: }
1.159 albertel 487: }
1.323 albertel 488: } else {
489: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 490: }
1.159 albertel 491: return $result;
1.65 albertel 492: }
493:
1.285 raeburn 494: # -------------------------------------------------------------store_aggregates
495: # Sends hash of values to be incremented in nohist_resourcetracker.db
496: # for the course. Increments total number of attempts, unique students
497: # and corrects for each part for an instance of a problem, as appropriate.
498: sub store_aggregates {
499: my ($symb,$courseid) = @_;
1.286 albertel 500: my %aggregate;
501: my @parts;
1.288 albertel 502: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
503: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 504: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 505: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 506: push(@parts, $1);
1.285 raeburn 507: }
508: }
1.286 albertel 509: foreach my $part (@parts) {
510: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
511: eq 'APPROX_ANS' ||
512: $Apache::lonhomework::results{'resource.'.$part.'.award'}
513: eq 'EXACT_ANS') {
1.287 albertel 514: $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285 raeburn 515: }
1.286 albertel 516: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287 albertel 517: $aggregate{$symb."\0".$part."\0users"} = 1;
1.292 raeburn 518: } else {
1.293 albertel 519: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1.292 raeburn 520: if ($last_reset) {
1.293 albertel 521: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292 raeburn 522: $aggregate{$symb."\0".$part."\0users"} = 1;
523: }
524: }
1.285 raeburn 525: }
1.287 albertel 526: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 527: }
1.292 raeburn 528: if (keys (%aggregate) > 0) {
1.289 albertel 529: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 530: $cdomain,$cname);
531: }
532: }
1.289 albertel 533:
1.65 albertel 534: sub checkout_msg {
1.211 albertel 535: my %lt=&Apache::lonlocal::texthash(
536: 'resource'=>'The resource needs to be checked out',
537: '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.',
538: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
539: 'checkout'=>'Check out Exam for Viewing',
540: 'checkout?'=>'Check out Exam?');
1.352 albertel 541: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 542: return (<<ENDCHECKOUT);
1.211 albertel 543: <h2>$lt{'resource'}</h2>
544: <p>$lt{'id_expln'}</p>
545: <font color="red">
546: <p>$lt{'warning'}</p>
1.91 albertel 547: </font>
1.352 albertel 548: <form name="checkout" method="POST" action="$uri">
1.91 albertel 549: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 550: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 551: </form>
552: ENDCHECKOUT
553: }
554:
1.252 albertel 555: sub firstaccess_msg {
1.253 albertel 556: my ($time,$symb)=@_;
557: my ($map)=&Apache::lonnet::decode_symb($symb);
558: my $foldertitle=&Apache::lonnet::gettitle($map);
559: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352 albertel 560: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252 albertel 561: return (<<ENDCHECKOUT);
1.253 albertel 562: <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 563: <form name="markaccess" method="POST" action="$uri">
1.252 albertel 564: <input type="hidden" name="markaccess" value="yes" />
565: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
566: </form>
567: ENDCHECKOUT
568: }
569:
1.204 albertel 570: sub init_problem_globals {
571: my ($type)=@_;
572: #initialize globals
1.308 foxr 573: # For problems, we start out in part 0 (outside a <part> tag).
574: # and part 0 is used to describe the main body of the <problem>
575: #
1.204 albertel 576: if ($type eq 'problem') {
577: $Apache::inputtags::part='0';
578: @Apache::inputtags::partlist=('0');
1.266 albertel 579: $Apache::lonhomework::problemstatus=&get_problem_status('0');
580: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 581:
1.266 albertel 582: } elsif ($type eq 'library') {
1.204 albertel 583: $Apache::inputtags::part='';
584: @Apache::inputtags::partlist=();
585: $Apache::lonhomework::problemstatus='';
1.266 albertel 586: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 587:
1.304 albertel 588: } elsif ($type eq 'Task') {
589: $Apache::inputtags::part='0';
590: @Apache::inputtags::partlist=('0');
591: $Apache::lonhomework::problemstatus='';
592: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 593: }
594: @Apache::inputtags::responselist = ();
595: @Apache::inputtags::importlist = ();
596: @Apache::inputtags::previous=();
597: @Apache::inputtags::previous_version=();
598: $Apache::structuretags::printanswer='No';
599: @Apache::structuretags::whileconds=();
600: @Apache::structuretags::whilebody=();
601: @Apache::structuretags::whileline=();
602: $Apache::lonhomework::scantronmode=0;
603: undef($Apache::lonhomework::name);
1.358 albertel 604: undef($Apache::lonhomework::default_type);
605: undef($Apache::lonhomework::type);
1.204 albertel 606: }
607:
608: sub reset_problem_globals {
609: my ($type)=@_;
610: undef(%Apache::lonhomework::history);
611: undef(%Apache::lonhomework::results);
612: undef($Apache::inputtags::part);
1.208 albertel 613: #don't undef this, lonhomework.pm takes care of this, we use this to
614: #detect if we try to do 2 problems in one file
615: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 616: undef($Apache::lonhomework::name);
1.358 albertel 617: undef($Apache::lonhomework::default_type);
618: undef($Apache::lonhomework::type);
619: undef($Apache::lonhomework::scantronmode);
620: undef($Apache::lonhomework::problemstatus);
621: undef($Apache::lonhomework::ignore_response_errors);
1.204 albertel 622: }
623:
1.241 albertel 624: sub set_problem_state {
1.240 albertel 625: my ($part)=@_;
1.284 albertel 626: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 627: $Apache::lonhomework::history{"resource.$part.solved"}=
628: 'correct_by_student';
629: }
630: }
631:
1.241 albertel 632: sub get_problem_status {
633: my ($part)=@_;
1.267 albertel 634: my $problem_status;
1.284 albertel 635: if ($env{'request.state'} eq 'construct' &&
636: defined($env{'form.problemstatus'})) {
637: $problem_status=$env{'form.problemstatus'};
1.267 albertel 638: } else {
639: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
640: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 641: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 642: }
643: return $problem_status;
644: }
645:
1.9 albertel 646: sub start_problem {
1.326 albertel 647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 648:
1.311 foxr 649: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 650: if (!$Apache::lonxml::metamode) {
651: &Apache::lonxml::startredirection();
652: }
1.311 foxr 653:
1.308 foxr 654: # Problems don't nest and we don't allow more than one <problem> in
655: # a .problem file.
656: #
1.184 albertel 657: if ( $Apache::inputtags::part ne '' ||
658: $Apache::lonhomework::parsing_a_problem) {
659: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 660: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 661: return '';
662: }
1.184 albertel 663:
664: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 665: &init_problem_globals('problem');
1.166 albertel 666:
1.284 albertel 667: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 668: $Apache::lonhomework::scantronmode=1;
669: }
1.161 albertel 670:
1.159 albertel 671: if ($target ne 'analyze') {
672: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284 albertel 673: if (($env{'request.state'} eq 'construct') &&
674: defined($env{'form.problemtype'})) {
675: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 676: }
1.332 albertel 677: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 678: }
1.164 albertel 679: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 680: my $uri=$env{'request.uri'};
1.159 albertel 681: if ($uri=~/\.(\w+)$/) {
682: $Apache::lonhomework::type=$1;
683: &Apache::lonxml::debug("Using type of $1");
684: } else {
685: $Apache::lonhomework::type='problem';
686: &Apache::lonxml::debug("Using default type, problem, :$uri:");
687: }
1.87 albertel 688: }
1.301 albertel 689: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 690:
1.363 albertel 691: &initialize_storage();
1.389 albertel 692: if ($target ne 'analyze'
693: && $env{'request.state'} eq 'construct') {
694: &set_problem_state('0');
695: }
696:
1.366 albertel 697: if ($target eq 'web') {
698: &Apache::lonxml::debug(" grading history ");
699: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
700: }
1.363 albertel 701:
1.159 albertel 702: #added vars to the scripting enviroment
1.213 albertel 703: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 704: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 705: &Apache::run::run($expression,$safeeval);
1.159 albertel 706: my $status;
707: my $accessmsg;
708:
1.343 albertel 709: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 710: my ($result,$form_tag_start);
1.354 albertel 711: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
712: || $target eq 'edit') {
1.350 albertel 713: ($result,$form_tag_start) =
714: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
715: $name);
716: }
717:
1.284 albertel 718: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 719:
720: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
721: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
722: $target eq 'tex') {
723: #handle exam checkout
724: if ($Apache::lonhomework::type eq 'exam') {
725: my $token=
726: $Apache::lonhomework::history{"resource.0.outtoken"};
1.284 albertel 727: if (($env{'form.doescheckout'}) && (!$token)) {
1.159 albertel 728: $token=&Apache::lonxml::maketoken();
729: $Apache::lonhomework::history{"resource.0.outtoken"}=
730: $token;
731: }
1.343 albertel 732: $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 733: }
1.284 albertel 734: if ($env{'form.markaccess'}) {
1.252 albertel 735: &Apache::lonnet::set_first_access('map');
736: }
1.159 albertel 737: #handle rand seed in construction space
738: my $rndseed=&setup_rndseed($safeeval);
1.367 albertel 739: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 740: if ($env{'request.state'} ne "construct" &&
741: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 742: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
743: $rndseed.'" />'.
744: '<input type="submit" name="resetdata"
1.334 albertel 745: value="'.&mt('New Problem Variation').'" />';
746: if (exists($env{'form.username'})) {
747: $form_tag_start.=
1.164 albertel 748: '<input type="hidden" name="username"
1.284 albertel 749: value="'.$env{'form.username'}.'" />';
1.334 albertel 750: }
1.333 albertel 751: if ($env{'request.role.adv'}) {
1.267 albertel 752: $form_tag_start.=
1.300 albertel 753: ' <label><input type="checkbox" name="showallfoils" ';
1.284 albertel 754: if (defined($env{'form.showallfoils'})) {
1.267 albertel 755: $form_tag_start.='checked="on"';
756: }
1.300 albertel 757: $form_tag_start.= ' />'.&mt(' Show All Foils').
758: '</label>';
1.267 albertel 759: }
760: $form_tag_start.='<hr />';
1.162 albertel 761: }
1.324 albertel 762:
763: ($status,$accessmsg,my $slot_name,my $slot) =
764: &Apache::lonhomework::check_slot_access('0','problem');
1.159 albertel 765: push (@Apache::inputtags::status,$status);
1.324 albertel 766:
1.159 albertel 767: my $expression='$external::datestatus="'.$status.'";';
768: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
769: &Apache::run::run($expression,$safeeval);
770: &Apache::lonxml::debug("Got $status");
1.324 albertel 771:
1.159 albertel 772: if (( $status eq 'CLOSED' ) ||
773: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 774: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 775: ( $status eq 'BANNED') ||
1.216 albertel 776: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 777: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 778: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 779: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
780: $style);
1.159 albertel 781: if ( $target eq "web" ) {
1.343 albertel 782: my $msg;
1.159 albertel 783: if ($status eq 'UNAVAILABLE') {
1.245 albertel 784: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 785: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 786: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 787: }
1.216 albertel 788: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 789: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 790: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 791: $msg.=&checkout_msg();
1.252 albertel 792: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 793: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 794: } elsif ($status eq 'NOT_IN_A_SLOT') {
795: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159 albertel 796: }
797: $result.=$msg.'<br />';
798: } elsif ($target eq 'tex') {
1.332 albertel 799: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
800: : '\begin{minipage}{\textwidth}';
801: $result.='\begin{document}\noindent \vskip 1 mm '.
802: $startminipage.'\vskip 0 mm';
1.159 albertel 803: if ($status eq 'UNAVAILABLE') {
1.211 albertel 804: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 805: } else {
1.211 albertel 806: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 807: }
808: }
1.324 albertel 809: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 810: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
811: $style);
1.324 albertel 812: if ($target eq 'web') {
1.375 albertel 813: $result .=
814: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 815: } elsif ($target eq 'grade') {
816: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
817: 'problem');
818: }
1.159 albertel 819: } elsif ($target eq 'web') {
1.360 albertel 820: if ($status eq 'CAN_ANSWER'
821: && $slot_name ne ''
822: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
823: # unproctored slot access, self checkin
824: &Apache::bridgetask::check_in('problem',undef,undef,
825: $slot_name);
826: }
1.368 albertel 827: $result.="\n $form_tag_start \t".
1.227 albertel 828: '<input type="hidden" name="submitted" value="yes" />';
829: # create a page header and exit
1.284 albertel 830: if ($env{'request.state'} eq "construct") {
831: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227 albertel 832: }
833: # if we are viewing someone else preserve that info
1.284 albertel 834: if (defined $env{'form.grade_symb'}) {
1.227 albertel 835: foreach my $field ('symb','courseid','domain','username') {
836: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 837: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 838: }
839: }
840: } elsif ($target eq 'tex') {
1.319 foxr 841: $result .= 'INSERTTEXFRONTMATTERHERE';
842:
1.99 sakharuk 843: }
1.159 albertel 844: } elsif ($target eq 'edit') {
1.343 albertel 845: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 846: $Apache::lonxml::warnings_error_header=
847: &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 848: my $temp=&Apache::edit::insertlist($target,$token);
849: $result.=$temp;
850: } elsif ($target eq 'modified') {
851: $result=$token->[4];
852: } else {
853: # page_start returned a starting result, delete it if we don't need it
854: $result = '';
1.99 sakharuk 855: }
1.159 albertel 856: return $result;
1.9 albertel 857: }
858:
859: sub end_problem {
1.159 albertel 860: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 861: my $result;
1.310 foxr 862:
1.321 albertel 863: if (!$Apache::lonxml::metamode) {
864: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 865: $Apache::lonxml::post_evaluate=0;
1.321 albertel 866: }
1.319 foxr 867:
868: if ($target eq 'tex') {
1.321 albertel 869: # Figure out the front matter and replace the
870: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
871: # this in end_problem because whether or not we display due
872: # dates depends on whether due dates have already been
873: # displayed in the problem parts.
874:
1.319 foxr 875: my $frontmatter = '';
876: my $startminipage = '';
877: if (not $env{'form.problem_split'}=~/yes/) {
878: $startminipage = '\begin{minipage}{\textwidth}';
879: }
880: my $id = $Apache::inputtags::part;
881: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
882: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
883: my @packages = split /,/,$packages;
884: my $allow_print_points = 0;
885: foreach my $partial_key (@packages) {
886: if ($partial_key=~m/^part_0$/) {
887: $allow_print_points=1;
888: }
889: }
890: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
891: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
892: if (lc($env{'course.'.$env{'request.course.id'}.
893: '.disableexampointprint'}) eq 'yes') {
894: $allow_print_points=0;
895: }
896: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
897: 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 ';
898: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
899: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
900:
901: # Figure out what the due date is and if we need to print
902: # it in the problem header. We have been logging the
903: # last due date written to file.
904:
905: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
906: my $duedate = POSIX::strftime("%c",localtime($duetime));
907: my $temp_file;
908: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
909:
910: # Figure out what the last printed due date is or set it
911: # to the epoch if no duedates have been printed.
912:
913: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
914: if (-e $filename) {
915: $temp_file = Apache::File->new($filename);
916: my @due_file = <$temp_file>;
917: $due_file_content = $due_file[$#due_file];
918: chomp $due_file_content;
919: }
920:
921: # We display the due date iff it is not the same as the last
922: # duedate in problem header ($due_file_content), and
923: # none of our parts displayed a duedate.
924: #
925: my $parts_with_displayduedate;
926: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
927: $parts_with_displayduedate =
928: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
929: } else {
930: $parts_with_displayduedate = 0;
931: }
932: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
933: $temp_file = Apache::File->new('>'.$filename);
934: print $temp_file "$duetime\n";
935: if (not $env{'request.symb'} =~ m/\.page_/) {
936: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
937: $frontmatter .= $begin_doc.
938: '\textit{Due date: '.$duedate.'} '.$toc_line;
939: } else {
940: $frontmatter.= $begin_doc.$toc_line;
941: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
942: }
943: } else {
1.381 albertel 944: $frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319 foxr 945: }
946: } else {
947: if (not $env{'request.symb'} =~ m/\.page_/) {
948: $frontmatter .= $begin_doc.$toc_line;
949: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
950: } else {
1.381 albertel 951: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 952: }
953: }
954: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
955: }
956:
1.159 albertel 957: my $status=$Apache::inputtags::status['-1'];
958: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
959: $target eq 'tex') {
1.249 albertel 960: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 961: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 962: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
963: &Apache::inputtags::grade;
1.324 albertel 964: } elsif ($status eq 'NEEDS_CHECKIN') {
965: # no need to grade, and don't want to hide data
1.249 albertel 966: } else {
967: # move any submission data to .hidden
968: &Apache::inputtags::hidealldata($Apache::inputtags::part);
969: }
1.159 albertel 970: } elsif ( ($target eq 'web' || $target eq 'tex') &&
971: $Apache::inputtags::part eq '0' &&
1.252 albertel 972: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 973: # if part is zero, no <part>s existed, so we need show the current
974: # grading status
975: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
976: $result.= $gradestatus;
977: }
978: if (
1.284 albertel 979: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 980: ($target eq 'answer') || ($target eq 'tex')
981: ) {
1.227 albertel 982: if ($target ne 'tex' &&
1.284 albertel 983: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 984: $result.="</form>";
1.348 albertel 985: $result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159 albertel 986: }
987: if ($target eq 'web') {
1.346 albertel 988: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 989: } elsif ($target eq 'tex') {
1.178 sakharuk 990: my $endminipage = '';
1.284 albertel 991: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 992: $endminipage = '\end{minipage}';
993: }
1.284 albertel 994: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 995: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 996: } else {
1.262 sakharuk 997: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 998: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 999: $result .= $endminipage.'\end{document} ';
1000: } else {
1.382 albertel 1001: $result .= $endminipage;
1.262 sakharuk 1002: }
1.159 albertel 1003: }
1004: }
1005: }
1006: if ($target eq 'grade') {
1007: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1008: &finalize_storage();
1009: }
1.284 albertel 1010: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
1011: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 1012: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 1013: # normally we get it from above, but in CSTR
1.172 albertel 1014: # we always show answer mode too.
1.159 albertel 1015: }
1016: } elsif ($target eq 'meta') {
1017: if ($Apache::inputtags::part eq '0') {
1.179 albertel 1018: @Apache::inputtags::response=();
1.159 albertel 1019: $result=&Apache::response::mandatory_part_meta;
1020: }
1.215 albertel 1021: $result.=&Apache::response::meta_part_order();
1.258 albertel 1022: $result.=&Apache::response::meta_response_order();
1.159 albertel 1023: } elsif ($target eq 'edit') {
1024: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1025: $result .= &problem_edit_footer();
1.320 albertel 1026: } elsif ($target eq 'modified') {
1027: $result .= $token->[2];
1.159 albertel 1028: }
1.155 albertel 1029:
1.284 albertel 1030: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1031: &Apache::inputtags::check_for_duplicate_ids();
1032: }
1.204 albertel 1033:
1034: &reset_problem_globals('problem');
1.159 albertel 1035:
1036: return $result;
1.48 albertel 1037: }
1038:
1.108 albertel 1039:
1.48 albertel 1040: sub start_library {
1.159 albertel 1041: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1042: my ($result,$form_tag_start);
1.371 albertel 1043: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1044: &init_problem_globals('library');
1045: $Apache::lonhomework::type='problem';
1046: }
1.159 albertel 1047: if ($target eq 'edit') {
1.343 albertel 1048: ($result,$form_tag_start)=
1049: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1050: 'Edit');
1051: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1052: my $temp=&Apache::edit::insertlist($target,$token);
1053: $result.=$temp;
1054: } elsif ($target eq 'modified') {
1055: $result=$token->[4];
1.340 albertel 1056: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1057: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1058: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1059: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1060: ($result,$form_tag_start)=
1061: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1062: $name);
1.159 albertel 1063: my $rndseed=&setup_rndseed($safeeval);
1.343 albertel 1064: $result.=" \n $form_tag_start".
1.159 albertel 1065: '<input type="hidden" name="submitted" value="yes" />';
1066: $result.=&problem_web_to_edit_header($rndseed);
1067: }
1068: return $result;
1.48 albertel 1069: }
1070:
1071: sub end_library {
1.159 albertel 1072: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1073: my $result='';
1074: if ($target eq 'edit') {
1075: $result=&problem_edit_footer();
1.371 albertel 1076: } elsif ($target eq 'web'
1077: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1078: && $env{'request.state'} eq "construct") {
1.349 albertel 1079: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1080: }
1.371 albertel 1081: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1082: &reset_problem_globals('library');
1083: }
1.159 albertel 1084: return $result;
1.197 www 1085: }
1086:
1087: sub start_definetag {
1.326 albertel 1088: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1089:
1090: my $result;
1091:
1092: my $name = $token->[2]->{'name'};
1.326 albertel 1093: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1094: if ($target eq 'web') {
1095: if ($name=~/^\//) {
1096: $result=
1097: '<br /><table class="LC_sty_end"><tr><th>'.
1098: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1099: } else {
1100: $result=
1101: '<br /><table class="LC_sty_begin"><tr><th>'.
1102: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1103: }
1104: $skip = &HTML::Entities::encode($skip, '<>&"');
1105: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1106: }
1107: return $result;
1108: }
1109:
1110: sub end_definetag {
1111: return '';
1.1 albertel 1112: }
1113:
1114: sub start_block {
1.201 albertel 1115: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1116:
1117: my $result;
1.1 albertel 1118:
1.339 albertel 1119: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1120: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1121: my $code = $token->[2]->{'condition'};
1.385 albertel 1122: if (defined($code) && $code ne '') {
1.137 albertel 1123: if (!$Apache::lonxml::default_homework_loaded) {
1124: &Apache::lonxml::default_homework_load($safeeval);
1125: }
1.131 albertel 1126: $result = &Apache::run::run($code,$safeeval);
1127: &Apache::lonxml::debug("block :$code: returned :$result:");
1128: } else {
1129: $result='1';
1130: }
1131: if ( ! $result ) {
1.201 albertel 1132: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1133: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1134: }
1135: $result='';
1136: } elsif ($target eq 'edit') {
1137: $result .=&Apache::edit::tag_start($target,$token);
1138: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1139: $token,40);
1140: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1141: } elsif ($target eq 'modified') {
1142: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1143: $safeeval,'condition');
1144: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1145: }
1.131 albertel 1146: return $result;
1.1 albertel 1147: }
1148:
1149: sub end_block {
1.167 www 1150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1151: my $result;
1152: if ($target eq "edit") {
1153: $result.= &Apache::edit::tag_end($target,$token,'');
1154: }
1155: return $result;
1156: }
1157:
1158: sub start_languageblock {
1.201 albertel 1159: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1160:
1161: my $result;
1162:
1.339 albertel 1163: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1164: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1165: my $include = $token->[2]->{'include'};
1166: my $exclude = $token->[2]->{'exclude'};
1.398 www 1167: my @preferred_languages=&Apache::loncommon::preferred_languages();
1.394 www 1168: # This should not even happen, since we should at least have the server language
1.398 www 1169: if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
1170: # Now loop over all languages in order of preference
1171: foreach my $preferred_language (@preferred_languages) {
1.394 www 1172: # If the languageblock has no arguments, show the contents
1.399 www 1173: $result=1;
1174: my $found=0;
1.394 www 1175: # Do we have an include argument?
1.398 www 1176: if ($include) {
1.394 www 1177: # If include is specified, by default, don't render the block
1.399 www 1178: $result=0;
1.398 www 1179: foreach my $included_language (split(/\,/,$include)) {
1.394 www 1180: # ... but if my preferred language is included, render it
1.398 www 1181: if ($included_language eq $preferred_language) {
1.399 www 1182: $result=1;
1183: $found=1;
1.398 www 1184: }
1185: }
1186: }
1.394 www 1187: # Do we have an exclude argument?
1.398 www 1188: if ($exclude) {
1.399 www 1189: $result=1;
1.398 www 1190: foreach my $excluded_language (split(/\,/,$exclude)) {
1191: if ($excluded_language eq $preferred_language) {
1.399 www 1192: $result=0;
1193: $found=1;
1.398 www 1194: }
1195: }
1196: }
1.399 www 1197: if ($found) { last; }
1.398 www 1198: }
1.201 albertel 1199: if ( ! $result ) {
1200: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1201: $style);
1202: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1203: }
1204: $result='';
1.167 www 1205: } elsif ($target eq 'edit') {
1206: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1207: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1208: $token,40);
1.211 albertel 1209: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1210: $token,40);
1211: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1212: } elsif ($target eq 'modified') {
1213: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1214: $safeeval,'include',
1215: 'exclude');
1.167 www 1216: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1217: }
1218: return $result;
1219: }
1220:
1221: sub end_languageblock {
1.170 www 1222: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1223: my $result;
1.201 albertel 1224: if ($target eq "edit") {
1.170 www 1225: $result.= &Apache::edit::tag_end($target,$token,'');
1226: }
1227: return $result;
1228: }
1229:
1.397 albertel 1230: {
1231: my %available_texts;
1232: sub start_translated {
1233: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1234: &Apache::lonxml::register('Apache::structuretags',('lang'));
1235: undef(%available_texts);
1236: }
1237:
1238: sub end_translated {
1239: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1240: my $result;
1241: #show the translation on viewable targets
1242: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1243: # or non-viewable targets, if it's embedded in something that
1244: # wants the output
1245: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1246: && &Apache::lonxml::in_redirection() ) ) {
1247: my @possibilities = keys(%available_texts);
1248: my $which =
1249: &Apache::loncommon::languages(\@possibilities) || 'default';
1250: $result = $available_texts{$which};
1251: }
1252: undef(%available_texts);
1253: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1254: return $result;
1255: }
1256:
1257:
1258: sub start_lang {
1259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1260: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1261: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1262: &Apache::lonxml::startredirection();
1263: }
1264: return '';
1265: }
1266:
1267: sub end_lang {
1268: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1269: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1270: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1271: my $result = &Apache::lonxml::endredirection();
1272: my $which = &Apache::lonxml::get_param('which',$parstack,
1273: $safeeval);
1274: $available_texts{$which} = $result;
1275: }
1276: return '';
1277: }
1278: }
1279:
1.170 www 1280: sub start_instructorcomment {
1.201 albertel 1281: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1282:
1283: my $result;
1284:
1.339 albertel 1285: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1286: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284 albertel 1287: $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
1288: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1289: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1290: $parser,$style);
1.170 www 1291: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1292: }
1293: $result='';
1294: } elsif ($target eq 'edit') {
1295: $result .=&Apache::edit::tag_start($target,$token);
1296: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1297: }
1298: return $result;
1299: }
1300:
1301: sub end_instructorcomment {
1.159 albertel 1302: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1303: my $result;
1304: if ($target eq "edit") {
1305: $result.= &Apache::edit::tag_end($target,$token,'');
1306: }
1307: return $result;
1.4 tsai 1308: }
1309:
1310: sub start_while {
1.326 albertel 1311: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1312:
1.160 albertel 1313: my $result;
1.339 albertel 1314: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1315: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1316: my $code = $token->[2]->{'condition'};
1.4 tsai 1317:
1.160 albertel 1318: push( @Apache::structuretags::whileconds, $code);
1319: if (!$Apache::lonxml::default_homework_loaded) {
1320: &Apache::lonxml::default_homework_load($safeeval);
1321: }
1322: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1323: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1324: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1325: push( @Apache::structuretags::whileline, $token->[5]);
1326: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1327: if ( $result ) {
1328: &Apache::lonxml::newparser($parser,\$bodytext);
1329: }
1330: } elsif ($target eq 'edit') {
1331: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1332: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1333: $token,40);
1334: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1335: } elsif ($target eq 'modified') {
1336: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1337: $safeeval,'condition');
1338: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1339: }
1.160 albertel 1340: return $result;
1.4 tsai 1341: }
1342:
1343: sub end_while {
1.159 albertel 1344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1345: my $result;
1346:
1.339 albertel 1347: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1348: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1349: my $code = pop(@Apache::structuretags::whileconds);
1350: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1351: my $line = pop(@Apache::structuretags::whileline);
1352: my $return = &Apache::run::run($code,$safeeval);
1353: my $starttime=time;
1354: my $error=0;
1355: while ($return) {
1356: if (time-$starttime >
1357: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1358: $return = 0; $error=1; next;
1.161 albertel 1359: }
1360: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1361: if ($target eq 'grade' || $target eq 'answer' ||
1362: $target eq 'analyze') {
1363: # grade/answer/analyze should produce no output but if we
1364: # are redirecting, the redirecter should know what to do
1365: # with the output
1366: if (!$Apache::lonxml::redirection) { undef($result); }
1367: }
1.161 albertel 1368: $return = &Apache::run::run($code,$safeeval);
1369: }
1370: if ($error) {
1.270 albertel 1371: &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 1372: }
1373: } elsif ($target eq "edit") {
1374: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1375: }
1.160 albertel 1376: return $result;
1.1 albertel 1377: }
1.6 tsai 1378:
1.160 albertel 1379: # <randomlist show="1">
1.6 tsai 1380: # <tag1>..</tag1>
1381: # <tag2>..</tag2>
1382: # <tag3>..</tag3>
1.160 albertel 1383: # ...
1.6 tsai 1384: # </randomlist>
1385: sub start_randomlist {
1.326 albertel 1386: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1387: my $result;
1.339 albertel 1388: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1389: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1390: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1391: my $b_parser= HTML::LCParser->new(\$body);
1392: $b_parser->xml_mode(1);
1393: $b_parser->marked_sections(1);
1.159 albertel 1394: my $b_tok;
1395: my @randomlist;
1396: my $list_item;
1397: while($b_tok = $b_parser->get_token() ) {
1398: if($b_tok->[0] eq 'S') { # start tag
1399: # get content of the tag until matching end tag
1400: # get all text upto the matching tag
1401: # and push the content into @randomlist
1402: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1403: $b_parser);
1404: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1405: push(@randomlist,$list_item);
1406: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1407: # $list_item</b>";
1408: }
1409: if($b_tok->[0] eq 'T') { # text
1410: # what to do with text in between tags?
1411: # print "<b>TEXT $b_tok->[1]</b><br />";
1412: }
1413: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1414: # print "<b>END-TAG $b_tok->[1]</b><br />";
1415: # }
1416: }
1.303 albertel 1417: if (@randomlist) {
1418: my @idx_arr = (0 .. $#randomlist);
1419: &Apache::structuretags::shuffle(\@idx_arr);
1420: my $bodytext = '';
1421: my $show=$#randomlist;
1422: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1423: $showarg--;
1424: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1425: for(0 .. $show) {
1426: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1427: }
1428: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1429: }
1430: } elsif ($target eq 'edit' ) {
1431: $result .=&Apache::edit::tag_start($target,$token);
1432: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1433: $token,5);
1434: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1435: } elsif ($target eq 'modified' ) {
1436: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1437: $safeeval,'show');
1438: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1439: }
1440: return $result;
1.7 tsai 1441: }
1442:
1443: sub shuffle {
1444: my $a=shift;
1445: my $i;
1.303 albertel 1446: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1447: &Apache::response::pushrandomnumber();
1.159 albertel 1448: for($i=@$a;--$i;) {
1449: my $j=int(&Math::Random::random_uniform() * ($i+1));
1450: next if $i == $j;
1451: @$a[$i,$j] = @$a[$j,$i];
1452: }
1.251 albertel 1453: &Apache::response::poprandomnumber();
1.7 tsai 1454: }
1.6 tsai 1455: }
1456:
1457: sub end_randomlist {
1.159 albertel 1458: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1459: my $result;
1460: if ($target eq 'edit' ) {
1461: $result=&Apache::edit::tag_end($target,$token,
1462: 'End Randomly Parsed Block');
1463: }
1464: return $result;
1.6 tsai 1465: }
1466:
1.283 albertel 1467: sub ordered_show_check {
1468: my $last_part=$Apache::inputtags::partlist[-2];
1469: my $in_order=
1470: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1471: my $in_order_show=1;
1472: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1473: $in_order_show=&Apache::response::check_status($last_part);
1474: }
1475: return $in_order_show;
1476: }
1477:
1.11 albertel 1478: sub start_part {
1.326 albertel 1479: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 1480: if (!$Apache::lonxml::metamode) {
1481: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1482: # duedates.
1483: }
1.159 albertel 1484: my $result='';
1.386 albertel 1485: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 1486: $Apache::inputtags::part=$id;
1.177 albertel 1487: push(@Apache::inputtags::partlist,$id);
1488: @Apache::inputtags::response=();
1.159 albertel 1489: @Apache::inputtags::previous=();
1490: @Apache::inputtags::previous_version=();
1.241 albertel 1491: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1492: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1493: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1494: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1495: my $in_order_show=&ordered_show_check();
1.214 albertel 1496: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1497: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1498: &Apache::run::run($expression,$safeeval);
1.159 albertel 1499:
1500: if ($target eq 'meta') {
1.224 www 1501: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1502: return &Apache::response::mandatory_part_meta.
1503: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1504: } elsif ($target eq 'web' || $target eq 'grade' ||
1505: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1506: if ($hidden || !$in_order_show) {
1.326 albertel 1507: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 1508: } else {
1509: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1510: push (@Apache::inputtags::status,$status);
1511: my $expression='$external::datestatus="'.$status.'";';
1512: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1513: &Apache::run::run($expression,$safeeval);
1.284 albertel 1514: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1515: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1516: }
1.216 albertel 1517: if (( $status eq 'CLOSED' ) ||
1518: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1519: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1520: ( $status eq 'BANNED') ||
1521: ( $status eq 'UNAVAILABLE') ||
1522: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1523: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
1524: $style);
1.159 albertel 1525: if ( $target eq "web" ) {
1.211 albertel 1526: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1527: } elsif ( $target eq 'tex' ) {
1.284 albertel 1528: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1529: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1530: } else {
1.211 albertel 1531: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1532: }
1.159 albertel 1533: }
1534: } else {
1535: if ($target eq 'tex') {
1.284 albertel 1536: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1537: if ($$tagstack[-2] eq 'td') {
1.388 foxr 1538: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 1539: } else {
1540: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1541: }
1.195 sakharuk 1542: }
1.159 albertel 1543: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1544: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1545: my @allkeys = split /,/,$allkeys;
1546: my $allow_print_points = 0;
1547: foreach my $partial_key (@allkeys) {
1.230 albertel 1548: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1549: if ($1 ne '0') {$allow_print_points=1;}
1550: }
1551: }
1.275 albertel 1552: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1553: if (defined($maxtries) && $maxtries < 0) {
1554: $allow_print_points=0;
1555: }
1.302 albertel 1556: if (lc($env{'course.'.$env{'request.course.id'}.
1557: '.disableexampointprint'}) eq 'yes') {
1558: $allow_print_points=0;
1559: }
1.222 sakharuk 1560: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1561: } elsif ($target eq 'web') {
1.356 www 1562: $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159 albertel 1563: }
1564: }
1565: }
1566: } elsif ($target eq 'edit') {
1567: $result.=&Apache::edit::tag_start($target,$token);
1568: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1569: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1570: ' '.
1571: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1572: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1573: } elsif ($target eq 'modified') {
1574: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1575: $safeeval,'id','display');
1.159 albertel 1576: if ($constructtag) {
1.225 albertel 1577: #limiting ids to only letters numbers, and space
1.224 www 1578: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1579: $result = &Apache::edit::rebuild_tag($token);
1580: }
1581: }
1582: return $result;
1.11 albertel 1583: }
1584:
1585: sub end_part {
1.159 albertel 1586: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1587: &Apache::lonxml::debug("in end_part $target ");
1588: my $status=$Apache::inputtags::status['-1'];
1589: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 1590: my $in_order_show=&ordered_show_check();
1.321 albertel 1591: my $result;
1592: if (!$Apache::lonxml::metamode) {
1593: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 1594: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1595: }
1.312 albertel 1596: if ($target eq 'grade') {
1.249 albertel 1597: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 1598: !$hidden && $in_order_show) {
1.311 foxr 1599: $result.=&Apache::inputtags::grade;
1.249 albertel 1600: } else {
1601: # move any submission data to .hidden
1602: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1603: }
1.283 albertel 1604: } elsif (($target eq 'web' || $target eq 'tex') &&
1605: !$hidden && $in_order_show) {
1.159 albertel 1606: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1607: $target);
1.212 albertel 1608: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1609: $gradestatus='';
1610: }
1.311 foxr 1611: $result.=$gradestatus;
1.265 sakharuk 1612: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1613: } elsif ($target eq 'edit') {
1.311 foxr 1614: $result.=&Apache::edit::end_table();
1.322 albertel 1615: } elsif ($target eq 'modified') {
1616: $result .= $token->[2];
1.159 albertel 1617: }
1618: pop @Apache::inputtags::status;
1619: $Apache::inputtags::part='';
1.295 albertel 1620: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 1621: return $result;
1.11 albertel 1622: }
1.1 albertel 1623:
1.25 albertel 1624: sub start_preduedate {
1.326 albertel 1625: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 1626: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1627: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 1628: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 1629: if (!$Apache::lonhomework::scantronmode &&
1630: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1631: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1632: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 1633: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 1634: }
1.24 albertel 1635: }
1.159 albertel 1636: return '';
1.24 albertel 1637: }
1638:
1.25 albertel 1639: sub end_preduedate {
1.159 albertel 1640: return '';
1.24 albertel 1641: }
1642:
1.369 foxr 1643: # In all the modes where <postanswerdate> text is
1644: # displayable, all we do is eat up the text between the start/stop
1645: # tags if the conditions are not right to display it.
1.25 albertel 1646: sub start_postanswerdate {
1.326 albertel 1647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 1648: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
1649: &Apache::lonnet::allowed('pav',
1650: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 1651: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 1652: $target eq 'tex' ) {
1.300 albertel 1653: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 1654: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
1655: (($target eq 'tex') && !$pav)) {
1.326 albertel 1656: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 1657: }
1658: }
1659: return '';
1.24 albertel 1660: }
1661:
1.25 albertel 1662: sub end_postanswerdate {
1.159 albertel 1663: return '';
1.24 albertel 1664: }
1665:
1.25 albertel 1666: sub start_notsolved {
1.326 albertel 1667: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1668: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 1669: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 1670: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1671: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1672: if ($gradestatus =~ /^correct/ &&
1673: &Apache::response::show_answer()) {
1.159 albertel 1674: &Apache::lonxml::debug("skipping");
1.326 albertel 1675: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 1676: }
1.24 albertel 1677: }
1.159 albertel 1678: return '';
1.24 albertel 1679: }
1680:
1.25 albertel 1681: sub end_notsolved {
1.159 albertel 1682: return '';
1.24 albertel 1683: }
1684:
1685: sub start_solved {
1.326 albertel 1686: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1687: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1688: $target eq 'tex') {
1689: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1690: if ($gradestatus !~ /^correct/ ||
1691: !&Apache::response::show_answer()) {
1.326 albertel 1692: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 1693: }
1.24 albertel 1694: }
1.159 albertel 1695: return '';
1.24 albertel 1696: }
1697:
1698: sub end_solved {
1.248 albertel 1699: return '';
1700: }
1701:
1702: sub start_problemtype {
1.326 albertel 1703: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 1704: my $result;
1.339 albertel 1705: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1706: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 1707: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1708: if (!defined($mode)) { $mode='show'; }
1709: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1710: my $found=0;
1711: foreach my $type (split(',',$for)) {
1712: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1713: }
1714: if ($mode eq 'show' && !$found) {
1.326 albertel 1715: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1716: }
1717: if ($mode eq 'hide' && $found) {
1.326 albertel 1718: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1719: }
1720: } elsif ($target eq 'edit') {
1721: $result .=&Apache::edit::tag_start($target,$token);
1722: $result.=&Apache::edit::select_arg('Mode:','mode',
1723: [['show','Show'],
1724: ['hide','Hide']]
1725: ,$token);
1726: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1727: [ ['exam','Exam/Quiz Problem'],
1728: ['survey','Survey'],
1729: ['problem','Homework Problem'] ]
1730: ,$token);
1731: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1732: } elsif ($target eq 'modified') {
1733: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1734: $safeeval,'mode','for');
1735: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1736: }
1737: return $result;
1738: }
1739:
1740: sub end_problemtype {
1.159 albertel 1741: return '';
1.24 albertel 1742: }
1.34 albertel 1743:
1744: sub start_startouttext {
1.159 albertel 1745: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1746: my @result=(''.'');
1747: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1748: return (@result);
1.34 albertel 1749: }
1.159 albertel 1750:
1.34 albertel 1751: sub end_startouttext {
1.326 albertel 1752: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1753: my $result='';
1754: my $text='';
1755:
1756: if ($target eq 'edit') {
1.326 albertel 1757: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211 albertel 1758: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1759: <td>".&mt('Delete:').
1.159 albertel 1760: &Apache::edit::deletelist($target,$token)
1761: ."</td>
1.42 albertel 1762: <td>".
1.159 albertel 1763: &Apache::edit::insertlist($target,$token).
1.362 albertel 1764: '</td><td align="right" valign="top">' .
1765: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 1766: &Apache::edit::end_row().
1.362 albertel 1767: &Apache::edit::start_spanning_row()."\n".
1.255 www 1768: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1769: }
1770: if ($target eq 'modified') {
1.219 albertel 1771: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1772: }
1773: if ($target eq 'tex') {
1774: $result .= '\noindent ';
1775: }
1776: return $result;
1.34 albertel 1777: }
1.159 albertel 1778:
1.34 albertel 1779: sub start_endouttext {
1.159 albertel 1780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1781: my $result='';
1782: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1783: if ($target eq "modified") {
1784: $result='<endouttext />'.
1.377 albertel 1785: &Apache::edit::handle_insertafter('startouttext');
1786: }
1.159 albertel 1787: return $result;
1.34 albertel 1788: }
1.159 albertel 1789:
1.34 albertel 1790: sub end_endouttext {
1.159 albertel 1791: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1792: my @result=('','');
1793: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1794: return (@result);
1.34 albertel 1795: }
1.159 albertel 1796:
1.45 albertel 1797: sub delete_startouttext {
1.326 albertel 1798: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1799: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 1800: my $text=$$parser['-1']->get_text("/endouttext");
1801: my $ntoken=$$parser['-1']->get_token();
1802: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1803: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1804: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1805: # they did the last time round
1806: &Apache::lonxml::increasedepth($ntoken);
1807: &Apache::lonxml::decreasedepth($ntoken);
1808: return 1;
1.193 www 1809: }
1810:
1811: sub start_simpleeditbutton {
1812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1813: my $result='';
1.284 albertel 1814: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 1815: ($target eq 'web') &&
1.330 albertel 1816: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 1817: my $url=$env{'request.noversionuri'};
1.193 www 1818: $url=~s/\?.*$//;
1.367 albertel 1819: my ($symb) = &Apache::lonnet::whichuser();
1.194 www 1820: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356 www 1821: '<a href="'.$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 1822: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1823: }
1824: return $result;
1825: }
1826:
1827: sub end_simpleeditbutton {
1828: return '';
1.45 albertel 1829: }
1.34 albertel 1830:
1.1 albertel 1831: 1;
1832: __END__
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