Annotation of loncom/homework/structuretags.pm, revision 1.401
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.401 ! albertel 4: # $Id: structuretags.pm,v 1.400 2007/09/25 23:16:13 albertel Exp $
1.74 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.254 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' || $target eq 'edit') {
1.344 albertel 161: # no extra args to bodytag
1.297 albertel 162: }
1.272 albertel 163: } elsif (!defined($found{'body'})) {
1.343 albertel 164: my %add_entries;
1.159 albertel 165: my $background=&Apache::lonxml::get_param('background',$parstack,
166: $safeeval);
1.343 albertel 167: if ($background ne '' ) {
168: $add_entries{'background'} = $background;
169: }
1.344 albertel 170:
1.290 albertel 171: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
172: $safeeval);
1.344 albertel 173: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
174:
175: $body_args{'bgcolor'} = $bgcolor;
176: $body_args{'no_title'} = 1;
177: $body_args{'force_register'} = 1;
178: $body_args{'add_entries'} = \%add_entries;
1.391 albertel 179: if ($env{'environment.remote'} eq 'off'
180: && $env{'request.state'} eq 'construct') {
181: $body_args{'only_body'} = 1;
182: }
1.344 albertel 183: }
1.365 albertel 184: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 185: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
186: \%body_args);
187:
188: if (!defined($found{'body'})
189: && $env{'request.state'} ne 'construct'
190: && ($target eq 'web' || $target eq 'webgrade')) {
191:
1.367 albertel 192: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344 albertel 193: if ($symb eq '' && !$publicuser) {
194: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
195: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
196: $page_start .= $help;
1.159 albertel 197: }
1.344 albertel 198: }
199:
200: if (!defined($found{'body'})) {
1.343 albertel 201: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 202: }
1.344 albertel 203:
1.159 albertel 204: my $form_tag_start;
205: if (!defined($found{'form'})) {
1.337 albertel 206: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338 albertel 207: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327 albertel 208: $form_tag_start.=$uri.'" ';
209: if ($target eq 'edit') {
210: $form_tag_start.=&Apache::edit::form_change_detection();
211: }
1.368 albertel 212: $form_tag_start.='>'."\n";
1.355 albertel 213:
214: my $symb=&Apache::lonnet::symbread();
215: if ($symb =~ /\S/) {
216: $symb=
217: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
218: $form_tag_start.=
1.368 albertel 219: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 220: }
1.159 albertel 221: }
1.343 albertel 222: return ($page_start,$form_tag_start);
1.105 albertel 223: }
224:
1.141 matthew 225: #use Time::HiRes();
1.105 albertel 226: sub get_resource_name {
1.159 albertel 227: my ($parstack,$safeeval)=@_;
1.388 foxr 228: my $name;
1.204 albertel 229: if (defined($Apache::lonhomework::name)) {
1.388 foxr 230: $name = $Apache::lonhomework::name;
231: } else {
232: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 233: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 234: if ($name eq '') {
235: $name=&Apache::lonnet::EXT('resource.title');
236: if ($name eq 'con_lost') { $name = ''; }
237: }
238: if ($name!~/\S+/) {
239: $name=$env{'request.uri'};
240: $name=~s-.*/([^/]+)$-$1-;
241: }
242: # The name has had html tags escaped:
243:
244: $name=~s/</</gs;
245: $name=~s/>/>/gs;
246:
247: $Apache::lonhomework::name=$name;
1.204 albertel 248: }
1.159 albertel 249: return $name;
1.105 albertel 250: }
251:
252: sub setup_rndseed {
1.159 albertel 253: my ($safeeval)=@_;
254: my $rndseed;
1.367 albertel 255: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 256: if ($env{'request.state'} eq "construct"
257: || $symb eq ''
258: || $Apache::lonhomework::type eq 'practice'
259: || $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 260: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 261: ['rndseed']);
1.284 albertel 262: $rndseed=$env{'form.rndseed'};
1.159 albertel 263: if (!$rndseed) {
1.162 albertel 264: $rndseed=$Apache::lonhomework::history{'rndseed'};
265: if (!$rndseed) {
266: $rndseed=time;
267: }
1.284 albertel 268: $env{'form.rndseed'}=$rndseed;
1.162 albertel 269: }
1.374 albertel 270: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
271: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 272: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 273: srand(time);
274: $rndseed=int(rand(2100000000));
1.284 albertel 275: $env{'form.rndseed'}=$rndseed;
276: delete($env{'form.resetdata'});
277: delete($env{'form.newrandomization'});
1.159 albertel 278: }
1.187 albertel 279: if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307 albertel 280: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 281: }
1.247 albertel 282: if ($Apache::lonhomework::history{'resource.CODE'}) {
283: $rndseed=&Apache::lonnet::rndseed();
284: }
1.221 albertel 285: if ($safeeval) {
286: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 287: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 288: }
1.159 albertel 289: }
290: return $rndseed;
1.105 albertel 291: }
292:
1.268 albertel 293: sub remember_problem_state {
294: return '
1.284 albertel 295: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
296: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
297: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 298: }
299:
1.105 albertel 300: sub problem_edit_header {
1.268 albertel 301: return '<input type="hidden" name="submitted" value="edit" />'.
302: &Apache::structuretags::remember_problem_state().'
1.210 albertel 303: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 304: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328 albertel 305: <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 306: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
307: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
308: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.359 albertel 309: &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.260 albertel 310: .'</td></tr></table>'.
1.282 albertel 311: '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 312: }
313:
314: sub problem_edit_footer {
1.210 albertel 315: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 316: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348 albertel 317: &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342 albertel 318: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 319: }
320:
1.235 albertel 321: sub option {
322: my ($value,$name) = @_;
323: my $result ="<option value='".$value."' ";
1.284 albertel 324: if ($env{'form.'.$name} eq $value) {
1.235 albertel 325: $result.=" selected='on' ";
326: }
327: $result.='>';
328: return $result;
329: }
330:
1.105 albertel 331: sub problem_web_to_edit_header {
1.159 albertel 332: my ($rndseed)=@_;
1.313 albertel 333: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373 albertel 334: $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.313 albertel 335: $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 336: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
337: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 338: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270 albertel 339: <input type="text" name="rndseed" size="10" value="'.
1.175 albertel 340: $rndseed.'"
1.270 albertel 341: onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.384 albertel 342: <span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
1.315 albertel 343: my $show_all_foils_text =
344: ($Apache::lonhomework::parsing_a_task) ?
345: &mt(' Show All Instances')
346: : &mt(' Show All Foils');
347:
1.284 albertel 348: if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.384 albertel 349: $result.= ' />'.$show_all_foils_text.'</label></span>'.
1.228 www 350: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.371 albertel 351: '<hr />';
1.386 albertel 352: $result.=&mt('Apply style file: ').'
1.384 albertel 353: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
354: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
355: <input type="submit" name="clear_style_file" value="'.&mt('Clear').'" />
356: <br />';
357:
1.313 albertel 358: if (!$Apache::lonhomework::parsing_a_task) {
359: $result.="
1.235 albertel 360: <nobr>
361: Problem Status:
362: <select name='problemstate'>
1.270 albertel 363: <option value=''></option>
1.235 albertel 364: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
365: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
366: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
367: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
368: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
369: </select>
370: </nobr>
371: <nobr>
372: Problem Type:
373: <select name='problemtype'>
1.270 albertel 374: <option value=''></option>
1.242 albertel 375: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
376: ".&option('problem','problemtype').&mt("Homework problem")."</option>
377: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 378: </select>
379: </nobr>
380: <nobr>
381: Feedback Mode:
382: <select name='problemstatus'>
383: <option value=''></option>
1.242 albertel 384: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
385: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 386: </select>
387: </nobr>
1.242 albertel 388: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 389: <hr />";
1.313 albertel 390: my $numtoanalyze=$env{'form.numtoanalyze'};
391: if (!$numtoanalyze) { $numtoanalyze=20; }
392: $result.= '<input type="submit" name="problemmode" value='.
393: &mt('"Calculate answers').'" /> for
1.136 albertel 394: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 395: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
396: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 397: '',undef,undef,300).
1.210 albertel 398: '<hr />';
1.376 albertel 399: } elsif ($Apache::lonhomework::parsing_a_task) {
400: $result.="
401: <nobr>
402: Problem Status:
403: <select name='problemstate'>
404: <option value=''></option>
405: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
406: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
407: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
408: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
409: </select>
410: </nobr>
411: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
412: <hr />";
1.313 albertel 413: }
1.159 albertel 414: return $result;
1.48 albertel 415: }
416:
1.65 albertel 417: sub initialize_storage {
1.357 albertel 418: my ($given_symb) = @_;
1.353 albertel 419: undef(%Apache::lonhomework::results);
420: undef(%Apache::lonhomework::history);
1.357 albertel 421: my ($symb,$courseid,$domain,$name) =
1.367 albertel 422: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 423:
424: # anonymous users (CODEd exams) have no data
425: if ($name eq 'anonymous'
426: && !defined($domain)) {
427: return;
428: }
429:
1.333 albertel 430: if ($env{'request.state'} eq 'construct'
431: || $symb eq ''
432: || $Apache::lonhomework::type eq 'practice') {
433:
434: my $namespace = $symb || $env{'request.uri'};
435: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 436: ($env{'form.resetdata'} eq &mt('New Problem Variation')
437: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 438: $env{'form.newrandomization'} eq &mt('New Randomization')) {
439: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
440: &Apache::lonxml::debug("Attempt reset");
441: }
1.159 albertel 442: %Apache::lonhomework::history=
1.333 albertel 443: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 444: my ($temp)=keys %Apache::lonhomework::history ;
445: &Apache::lonxml::debug("Return message of $temp");
446: } else {
447: %Apache::lonhomework::history=
448: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
449: }
1.353 albertel 450:
1.159 albertel 451: #ignore error conditions
1.67 albertel 452: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 453: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 454: }
455:
456: # -------------------------------------------------------------finalize_storage
457: # Stores away the result has to a student's environment
458: # checks form.grade_ for specific values, other wises stores
459: # to the running users environment
1.285 raeburn 460: # Will increment totals for attempts, students, and corrects
461: # if running user has student role.
1.65 albertel 462: sub finalize_storage {
1.357 albertel 463: my ($given_symb) = @_;
1.159 albertel 464: my $result;
1.289 albertel 465: if (%Apache::lonhomework::results) {
1.323 albertel 466: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
467: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 468: my ($symb,$courseid,$domain,$name) =
1.367 albertel 469: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 470: if ($env{'request.state'} eq 'construct'
471: || $symb eq ''
472: || $Apache::lonhomework::type eq 'practice') {
473: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 474: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 475: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 476: $namespace,'',$domain,$name);
1.159 albertel 477: &Apache::lonxml::debug('Construct Store return message:'.$result);
478: } else {
479: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
480: $symb,$courseid,$domain,$name);
481: &Apache::lonxml::debug('Store return message:'.$result);
1.285 raeburn 482: if ($env{'request.role'} =~/^st/) {
483: &store_aggregates($symb,$courseid);
484: }
1.159 albertel 485: }
1.323 albertel 486: } else {
487: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 488: }
1.159 albertel 489: return $result;
1.65 albertel 490: }
491:
1.285 raeburn 492: # -------------------------------------------------------------store_aggregates
493: # Sends hash of values to be incremented in nohist_resourcetracker.db
494: # for the course. Increments total number of attempts, unique students
495: # and corrects for each part for an instance of a problem, as appropriate.
496: sub store_aggregates {
497: my ($symb,$courseid) = @_;
1.286 albertel 498: my %aggregate;
499: my @parts;
1.288 albertel 500: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
501: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 502: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 503: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 504: push(@parts, $1);
1.285 raeburn 505: }
506: }
1.286 albertel 507: foreach my $part (@parts) {
508: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
509: eq 'APPROX_ANS' ||
510: $Apache::lonhomework::results{'resource.'.$part.'.award'}
511: eq 'EXACT_ANS') {
1.287 albertel 512: $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285 raeburn 513: }
1.286 albertel 514: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287 albertel 515: $aggregate{$symb."\0".$part."\0users"} = 1;
1.292 raeburn 516: } else {
1.293 albertel 517: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1.292 raeburn 518: if ($last_reset) {
1.293 albertel 519: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292 raeburn 520: $aggregate{$symb."\0".$part."\0users"} = 1;
521: }
522: }
1.285 raeburn 523: }
1.287 albertel 524: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 525: }
1.292 raeburn 526: if (keys (%aggregate) > 0) {
1.289 albertel 527: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 528: $cdomain,$cname);
529: }
530: }
1.289 albertel 531:
1.65 albertel 532: sub checkout_msg {
1.211 albertel 533: my %lt=&Apache::lonlocal::texthash(
534: 'resource'=>'The resource needs to be checked out',
535: '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.',
536: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
537: 'checkout'=>'Check out Exam for Viewing',
538: 'checkout?'=>'Check out Exam?');
1.352 albertel 539: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 540: return (<<ENDCHECKOUT);
1.211 albertel 541: <h2>$lt{'resource'}</h2>
542: <p>$lt{'id_expln'}</p>
543: <font color="red">
544: <p>$lt{'warning'}</p>
1.91 albertel 545: </font>
1.352 albertel 546: <form name="checkout" method="POST" action="$uri">
1.91 albertel 547: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 548: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 549: </form>
550: ENDCHECKOUT
551: }
552:
1.252 albertel 553: sub firstaccess_msg {
1.253 albertel 554: my ($time,$symb)=@_;
555: my ($map)=&Apache::lonnet::decode_symb($symb);
556: my $foldertitle=&Apache::lonnet::gettitle($map);
557: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352 albertel 558: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252 albertel 559: return (<<ENDCHECKOUT);
1.253 albertel 560: <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 561: <form name="markaccess" method="POST" action="$uri">
1.252 albertel 562: <input type="hidden" name="markaccess" value="yes" />
563: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
564: </form>
565: ENDCHECKOUT
566: }
567:
1.204 albertel 568: sub init_problem_globals {
569: my ($type)=@_;
570: #initialize globals
1.308 foxr 571: # For problems, we start out in part 0 (outside a <part> tag).
572: # and part 0 is used to describe the main body of the <problem>
573: #
1.204 albertel 574: if ($type eq 'problem') {
575: $Apache::inputtags::part='0';
576: @Apache::inputtags::partlist=('0');
1.266 albertel 577: $Apache::lonhomework::problemstatus=&get_problem_status('0');
578: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 579:
1.266 albertel 580: } elsif ($type eq 'library') {
1.204 albertel 581: $Apache::inputtags::part='';
582: @Apache::inputtags::partlist=();
583: $Apache::lonhomework::problemstatus='';
1.266 albertel 584: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 585:
1.304 albertel 586: } elsif ($type eq 'Task') {
587: $Apache::inputtags::part='0';
588: @Apache::inputtags::partlist=('0');
589: $Apache::lonhomework::problemstatus='';
590: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 591: }
592: @Apache::inputtags::responselist = ();
593: @Apache::inputtags::importlist = ();
594: @Apache::inputtags::previous=();
595: @Apache::inputtags::previous_version=();
596: $Apache::structuretags::printanswer='No';
597: @Apache::structuretags::whileconds=();
598: @Apache::structuretags::whilebody=();
599: @Apache::structuretags::whileline=();
600: $Apache::lonhomework::scantronmode=0;
601: undef($Apache::lonhomework::name);
1.358 albertel 602: undef($Apache::lonhomework::default_type);
603: undef($Apache::lonhomework::type);
1.204 albertel 604: }
605:
606: sub reset_problem_globals {
607: my ($type)=@_;
608: undef(%Apache::lonhomework::history);
609: undef(%Apache::lonhomework::results);
610: undef($Apache::inputtags::part);
1.208 albertel 611: #don't undef this, lonhomework.pm takes care of this, we use this to
612: #detect if we try to do 2 problems in one file
613: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 614: undef($Apache::lonhomework::name);
1.358 albertel 615: undef($Apache::lonhomework::default_type);
616: undef($Apache::lonhomework::type);
617: undef($Apache::lonhomework::scantronmode);
618: undef($Apache::lonhomework::problemstatus);
619: undef($Apache::lonhomework::ignore_response_errors);
1.204 albertel 620: }
621:
1.241 albertel 622: sub set_problem_state {
1.240 albertel 623: my ($part)=@_;
1.284 albertel 624: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 625: $Apache::lonhomework::history{"resource.$part.solved"}=
626: 'correct_by_student';
627: }
628: }
629:
1.241 albertel 630: sub get_problem_status {
631: my ($part)=@_;
1.267 albertel 632: my $problem_status;
1.284 albertel 633: if ($env{'request.state'} eq 'construct' &&
634: defined($env{'form.problemstatus'})) {
635: $problem_status=$env{'form.problemstatus'};
1.267 albertel 636: } else {
637: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
638: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 639: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 640: }
641: return $problem_status;
642: }
643:
1.9 albertel 644: sub start_problem {
1.326 albertel 645: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 646:
1.311 foxr 647: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 648: if (!$Apache::lonxml::metamode) {
649: &Apache::lonxml::startredirection();
650: }
1.311 foxr 651:
1.308 foxr 652: # Problems don't nest and we don't allow more than one <problem> in
653: # a .problem file.
654: #
1.184 albertel 655: if ( $Apache::inputtags::part ne '' ||
656: $Apache::lonhomework::parsing_a_problem) {
657: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 658: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 659: return '';
660: }
1.184 albertel 661:
662: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 663: &init_problem_globals('problem');
1.166 albertel 664:
1.284 albertel 665: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 666: $Apache::lonhomework::scantronmode=1;
667: }
1.161 albertel 668:
1.159 albertel 669: if ($target ne 'analyze') {
670: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284 albertel 671: if (($env{'request.state'} eq 'construct') &&
672: defined($env{'form.problemtype'})) {
673: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 674: }
1.332 albertel 675: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 676: }
1.164 albertel 677: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 678: my $uri=$env{'request.uri'};
1.159 albertel 679: if ($uri=~/\.(\w+)$/) {
680: $Apache::lonhomework::type=$1;
681: &Apache::lonxml::debug("Using type of $1");
682: } else {
683: $Apache::lonhomework::type='problem';
684: &Apache::lonxml::debug("Using default type, problem, :$uri:");
685: }
1.87 albertel 686: }
1.301 albertel 687: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 688:
1.363 albertel 689: &initialize_storage();
1.389 albertel 690: if ($target ne 'analyze'
691: && $env{'request.state'} eq 'construct') {
692: &set_problem_state('0');
693: }
694:
1.366 albertel 695: if ($target eq 'web') {
696: &Apache::lonxml::debug(" grading history ");
697: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
698: }
1.363 albertel 699:
1.159 albertel 700: #added vars to the scripting enviroment
1.213 albertel 701: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 702: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 703: &Apache::run::run($expression,$safeeval);
1.159 albertel 704: my $status;
705: my $accessmsg;
706:
1.343 albertel 707: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 708: my ($result,$form_tag_start);
1.354 albertel 709: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
710: || $target eq 'edit') {
1.350 albertel 711: ($result,$form_tag_start) =
712: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
713: $name);
714: }
715:
1.284 albertel 716: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 717:
718: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
719: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
720: $target eq 'tex') {
721: #handle exam checkout
722: if ($Apache::lonhomework::type eq 'exam') {
723: my $token=
724: $Apache::lonhomework::history{"resource.0.outtoken"};
1.284 albertel 725: if (($env{'form.doescheckout'}) && (!$token)) {
1.159 albertel 726: $token=&Apache::lonxml::maketoken();
727: $Apache::lonhomework::history{"resource.0.outtoken"}=
728: $token;
729: }
1.343 albertel 730: $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 731: }
1.284 albertel 732: if ($env{'form.markaccess'}) {
1.252 albertel 733: &Apache::lonnet::set_first_access('map');
734: }
1.159 albertel 735: #handle rand seed in construction space
736: my $rndseed=&setup_rndseed($safeeval);
1.367 albertel 737: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 738: if ($env{'request.state'} ne "construct" &&
739: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 740: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
741: $rndseed.'" />'.
742: '<input type="submit" name="resetdata"
1.334 albertel 743: value="'.&mt('New Problem Variation').'" />';
744: if (exists($env{'form.username'})) {
745: $form_tag_start.=
1.164 albertel 746: '<input type="hidden" name="username"
1.284 albertel 747: value="'.$env{'form.username'}.'" />';
1.334 albertel 748: }
1.333 albertel 749: if ($env{'request.role.adv'}) {
1.267 albertel 750: $form_tag_start.=
1.300 albertel 751: ' <label><input type="checkbox" name="showallfoils" ';
1.284 albertel 752: if (defined($env{'form.showallfoils'})) {
1.267 albertel 753: $form_tag_start.='checked="on"';
754: }
1.300 albertel 755: $form_tag_start.= ' />'.&mt(' Show All Foils').
756: '</label>';
1.267 albertel 757: }
758: $form_tag_start.='<hr />';
1.162 albertel 759: }
1.324 albertel 760:
761: ($status,$accessmsg,my $slot_name,my $slot) =
762: &Apache::lonhomework::check_slot_access('0','problem');
1.159 albertel 763: push (@Apache::inputtags::status,$status);
1.324 albertel 764:
1.159 albertel 765: my $expression='$external::datestatus="'.$status.'";';
766: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
767: &Apache::run::run($expression,$safeeval);
768: &Apache::lonxml::debug("Got $status");
1.324 albertel 769:
1.159 albertel 770: if (( $status eq 'CLOSED' ) ||
771: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 772: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 773: ( $status eq 'BANNED') ||
1.216 albertel 774: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 775: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 776: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 777: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
778: $style);
1.159 albertel 779: if ( $target eq "web" ) {
1.343 albertel 780: my $msg;
1.159 albertel 781: if ($status eq 'UNAVAILABLE') {
1.245 albertel 782: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 783: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 784: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 785: }
1.216 albertel 786: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 787: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 788: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 789: $msg.=&checkout_msg();
1.252 albertel 790: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 791: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 792: } elsif ($status eq 'NOT_IN_A_SLOT') {
793: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159 albertel 794: }
795: $result.=$msg.'<br />';
796: } elsif ($target eq 'tex') {
1.332 albertel 797: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
798: : '\begin{minipage}{\textwidth}';
799: $result.='\begin{document}\noindent \vskip 1 mm '.
800: $startminipage.'\vskip 0 mm';
1.159 albertel 801: if ($status eq 'UNAVAILABLE') {
1.211 albertel 802: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 803: } else {
1.211 albertel 804: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 805: }
806: }
1.324 albertel 807: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 808: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
809: $style);
1.324 albertel 810: if ($target eq 'web') {
1.375 albertel 811: $result .=
812: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 813: } elsif ($target eq 'grade') {
814: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
815: 'problem');
816: }
1.159 albertel 817: } elsif ($target eq 'web') {
1.360 albertel 818: if ($status eq 'CAN_ANSWER'
819: && $slot_name ne ''
820: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
821: # unproctored slot access, self checkin
822: &Apache::bridgetask::check_in('problem',undef,undef,
823: $slot_name);
824: }
1.368 albertel 825: $result.="\n $form_tag_start \t".
1.227 albertel 826: '<input type="hidden" name="submitted" value="yes" />';
827: # create a page header and exit
1.284 albertel 828: if ($env{'request.state'} eq "construct") {
829: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227 albertel 830: }
831: # if we are viewing someone else preserve that info
1.284 albertel 832: if (defined $env{'form.grade_symb'}) {
1.227 albertel 833: foreach my $field ('symb','courseid','domain','username') {
834: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 835: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 836: }
837: }
838: } elsif ($target eq 'tex') {
1.319 foxr 839: $result .= 'INSERTTEXFRONTMATTERHERE';
840:
1.99 sakharuk 841: }
1.159 albertel 842: } elsif ($target eq 'edit') {
1.343 albertel 843: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 844: $Apache::lonxml::warnings_error_header=
845: &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 846: my $temp=&Apache::edit::insertlist($target,$token);
847: $result.=$temp;
848: } elsif ($target eq 'modified') {
849: $result=$token->[4];
850: } else {
851: # page_start returned a starting result, delete it if we don't need it
852: $result = '';
1.99 sakharuk 853: }
1.159 albertel 854: return $result;
1.9 albertel 855: }
856:
857: sub end_problem {
1.159 albertel 858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 859: my $result;
1.310 foxr 860:
1.321 albertel 861: if (!$Apache::lonxml::metamode) {
862: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 863: $Apache::lonxml::post_evaluate=0;
1.321 albertel 864: }
1.319 foxr 865:
866: if ($target eq 'tex') {
1.321 albertel 867: # Figure out the front matter and replace the
868: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
869: # this in end_problem because whether or not we display due
870: # dates depends on whether due dates have already been
871: # displayed in the problem parts.
872:
1.319 foxr 873: my $frontmatter = '';
874: my $startminipage = '';
875: if (not $env{'form.problem_split'}=~/yes/) {
876: $startminipage = '\begin{minipage}{\textwidth}';
877: }
878: my $id = $Apache::inputtags::part;
879: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
880: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
881: my @packages = split /,/,$packages;
882: my $allow_print_points = 0;
883: foreach my $partial_key (@packages) {
884: if ($partial_key=~m/^part_0$/) {
885: $allow_print_points=1;
886: }
887: }
888: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
889: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
890: if (lc($env{'course.'.$env{'request.course.id'}.
891: '.disableexampointprint'}) eq 'yes') {
892: $allow_print_points=0;
893: }
894: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
895: 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 ';
896: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
897: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
898:
899: # Figure out what the due date is and if we need to print
900: # it in the problem header. We have been logging the
901: # last due date written to file.
902:
903: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
904: my $duedate = POSIX::strftime("%c",localtime($duetime));
905: my $temp_file;
906: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
907:
908: # Figure out what the last printed due date is or set it
909: # to the epoch if no duedates have been printed.
910:
911: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
912: if (-e $filename) {
913: $temp_file = Apache::File->new($filename);
914: my @due_file = <$temp_file>;
915: $due_file_content = $due_file[$#due_file];
916: chomp $due_file_content;
917: }
918:
919: # We display the due date iff it is not the same as the last
920: # duedate in problem header ($due_file_content), and
921: # none of our parts displayed a duedate.
922: #
923: my $parts_with_displayduedate;
924: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
925: $parts_with_displayduedate =
926: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
927: } else {
928: $parts_with_displayduedate = 0;
929: }
930: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
931: $temp_file = Apache::File->new('>'.$filename);
932: print $temp_file "$duetime\n";
933: if (not $env{'request.symb'} =~ m/\.page_/) {
934: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
935: $frontmatter .= $begin_doc.
936: '\textit{Due date: '.$duedate.'} '.$toc_line;
937: } else {
938: $frontmatter.= $begin_doc.$toc_line;
939: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
940: }
941: } else {
1.381 albertel 942: $frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319 foxr 943: }
944: } else {
945: if (not $env{'request.symb'} =~ m/\.page_/) {
946: $frontmatter .= $begin_doc.$toc_line;
947: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
948: } else {
1.381 albertel 949: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 950: }
951: }
952: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
953: }
954:
1.159 albertel 955: my $status=$Apache::inputtags::status['-1'];
956: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
957: $target eq 'tex') {
1.249 albertel 958: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 959: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 960: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
961: &Apache::inputtags::grade;
1.324 albertel 962: } elsif ($status eq 'NEEDS_CHECKIN') {
963: # no need to grade, and don't want to hide data
1.249 albertel 964: } else {
965: # move any submission data to .hidden
966: &Apache::inputtags::hidealldata($Apache::inputtags::part);
967: }
1.159 albertel 968: } elsif ( ($target eq 'web' || $target eq 'tex') &&
969: $Apache::inputtags::part eq '0' &&
1.252 albertel 970: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 971: # if part is zero, no <part>s existed, so we need show the current
972: # grading status
973: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
974: $result.= $gradestatus;
975: }
976: if (
1.284 albertel 977: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 978: ($target eq 'answer') || ($target eq 'tex')
979: ) {
1.227 albertel 980: if ($target ne 'tex' &&
1.284 albertel 981: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 982: $result.="</form>";
1.348 albertel 983: $result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159 albertel 984: }
985: if ($target eq 'web') {
1.346 albertel 986: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 987: } elsif ($target eq 'tex') {
1.178 sakharuk 988: my $endminipage = '';
1.284 albertel 989: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 990: $endminipage = '\end{minipage}';
991: }
1.284 albertel 992: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 993: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 994: } else {
1.262 sakharuk 995: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 996: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 997: $result .= $endminipage.'\end{document} ';
998: } else {
1.382 albertel 999: $result .= $endminipage;
1.262 sakharuk 1000: }
1.159 albertel 1001: }
1002: }
1003: }
1004: if ($target eq 'grade') {
1005: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1006: &finalize_storage();
1007: }
1.284 albertel 1008: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
1009: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 1010: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 1011: # normally we get it from above, but in CSTR
1.172 albertel 1012: # we always show answer mode too.
1.159 albertel 1013: }
1014: } elsif ($target eq 'meta') {
1015: if ($Apache::inputtags::part eq '0') {
1.179 albertel 1016: @Apache::inputtags::response=();
1.159 albertel 1017: $result=&Apache::response::mandatory_part_meta;
1018: }
1.215 albertel 1019: $result.=&Apache::response::meta_part_order();
1.258 albertel 1020: $result.=&Apache::response::meta_response_order();
1.159 albertel 1021: } elsif ($target eq 'edit') {
1022: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1023: $result .= &problem_edit_footer();
1.320 albertel 1024: } elsif ($target eq 'modified') {
1025: $result .= $token->[2];
1.159 albertel 1026: }
1.155 albertel 1027:
1.284 albertel 1028: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1029: &Apache::inputtags::check_for_duplicate_ids();
1030: }
1.204 albertel 1031:
1032: &reset_problem_globals('problem');
1.159 albertel 1033:
1034: return $result;
1.48 albertel 1035: }
1036:
1.108 albertel 1037:
1.48 albertel 1038: sub start_library {
1.159 albertel 1039: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1040: my ($result,$form_tag_start);
1.371 albertel 1041: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1042: &init_problem_globals('library');
1043: $Apache::lonhomework::type='problem';
1044: }
1.159 albertel 1045: if ($target eq 'edit') {
1.343 albertel 1046: ($result,$form_tag_start)=
1047: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1048: 'Edit');
1049: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1050: my $temp=&Apache::edit::insertlist($target,$token);
1051: $result.=$temp;
1052: } elsif ($target eq 'modified') {
1053: $result=$token->[4];
1.340 albertel 1054: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1055: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1056: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1057: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1058: ($result,$form_tag_start)=
1059: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1060: $name);
1.159 albertel 1061: my $rndseed=&setup_rndseed($safeeval);
1.343 albertel 1062: $result.=" \n $form_tag_start".
1.159 albertel 1063: '<input type="hidden" name="submitted" value="yes" />';
1064: $result.=&problem_web_to_edit_header($rndseed);
1065: }
1066: return $result;
1.48 albertel 1067: }
1068:
1069: sub end_library {
1.159 albertel 1070: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1071: my $result='';
1072: if ($target eq 'edit') {
1073: $result=&problem_edit_footer();
1.371 albertel 1074: } elsif ($target eq 'web'
1075: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1076: && $env{'request.state'} eq "construct") {
1.349 albertel 1077: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1078: }
1.371 albertel 1079: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1080: &reset_problem_globals('library');
1081: }
1.159 albertel 1082: return $result;
1.197 www 1083: }
1084:
1085: sub start_definetag {
1.326 albertel 1086: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1087:
1088: my $result;
1089:
1090: my $name = $token->[2]->{'name'};
1.326 albertel 1091: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1092: if ($target eq 'web') {
1093: if ($name=~/^\//) {
1094: $result=
1095: '<br /><table class="LC_sty_end"><tr><th>'.
1096: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1097: } else {
1098: $result=
1099: '<br /><table class="LC_sty_begin"><tr><th>'.
1100: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1101: }
1102: $skip = &HTML::Entities::encode($skip, '<>&"');
1103: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1104: }
1105: return $result;
1106: }
1107:
1108: sub end_definetag {
1109: return '';
1.1 albertel 1110: }
1111:
1112: sub start_block {
1.201 albertel 1113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1114:
1115: my $result;
1.1 albertel 1116:
1.339 albertel 1117: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1118: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1119: my $code = $token->[2]->{'condition'};
1.385 albertel 1120: if (defined($code) && $code ne '') {
1.137 albertel 1121: if (!$Apache::lonxml::default_homework_loaded) {
1122: &Apache::lonxml::default_homework_load($safeeval);
1123: }
1.131 albertel 1124: $result = &Apache::run::run($code,$safeeval);
1125: &Apache::lonxml::debug("block :$code: returned :$result:");
1126: } else {
1127: $result='1';
1128: }
1129: if ( ! $result ) {
1.201 albertel 1130: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1131: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1132: }
1133: $result='';
1134: } elsif ($target eq 'edit') {
1135: $result .=&Apache::edit::tag_start($target,$token);
1136: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1137: $token,40);
1138: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1139: } elsif ($target eq 'modified') {
1140: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1141: $safeeval,'condition');
1142: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1143: }
1.131 albertel 1144: return $result;
1.1 albertel 1145: }
1146:
1147: sub end_block {
1.167 www 1148: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1149: my $result;
1150: if ($target eq "edit") {
1151: $result.= &Apache::edit::tag_end($target,$token,'');
1152: }
1153: return $result;
1154: }
1155:
1156: sub start_languageblock {
1.201 albertel 1157: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1158:
1159: my $result;
1160:
1.339 albertel 1161: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1162: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1163: my $include = $token->[2]->{'include'};
1164: my $exclude = $token->[2]->{'exclude'};
1.398 www 1165: my @preferred_languages=&Apache::loncommon::preferred_languages();
1.394 www 1166: # This should not even happen, since we should at least have the server language
1.398 www 1167: if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
1168: # Now loop over all languages in order of preference
1169: foreach my $preferred_language (@preferred_languages) {
1.394 www 1170: # If the languageblock has no arguments, show the contents
1.399 www 1171: $result=1;
1172: my $found=0;
1.394 www 1173: # Do we have an include argument?
1.398 www 1174: if ($include) {
1.394 www 1175: # If include is specified, by default, don't render the block
1.399 www 1176: $result=0;
1.398 www 1177: foreach my $included_language (split(/\,/,$include)) {
1.394 www 1178: # ... but if my preferred language is included, render it
1.398 www 1179: if ($included_language eq $preferred_language) {
1.399 www 1180: $result=1;
1181: $found=1;
1.398 www 1182: }
1183: }
1184: }
1.394 www 1185: # Do we have an exclude argument?
1.398 www 1186: if ($exclude) {
1.399 www 1187: $result=1;
1.398 www 1188: foreach my $excluded_language (split(/\,/,$exclude)) {
1189: if ($excluded_language eq $preferred_language) {
1.399 www 1190: $result=0;
1191: $found=1;
1.398 www 1192: }
1193: }
1194: }
1.399 www 1195: if ($found) { last; }
1.398 www 1196: }
1.201 albertel 1197: if ( ! $result ) {
1198: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1199: $style);
1200: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1201: }
1202: $result='';
1.167 www 1203: } elsif ($target eq 'edit') {
1204: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1205: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1206: $token,40);
1.211 albertel 1207: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1208: $token,40);
1209: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1210: } elsif ($target eq 'modified') {
1211: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1212: $safeeval,'include',
1213: 'exclude');
1.167 www 1214: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1215: }
1216: return $result;
1217: }
1218:
1219: sub end_languageblock {
1.170 www 1220: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1221: my $result;
1.201 albertel 1222: if ($target eq "edit") {
1.170 www 1223: $result.= &Apache::edit::tag_end($target,$token,'');
1224: }
1225: return $result;
1226: }
1227:
1.397 albertel 1228: {
1229: my %available_texts;
1230: sub start_translated {
1231: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1232: &Apache::lonxml::register('Apache::structuretags',('lang'));
1233: undef(%available_texts);
1234: }
1235:
1236: sub end_translated {
1237: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1238: my $result;
1239: #show the translation on viewable targets
1240: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1241: # or non-viewable targets, if it's embedded in something that
1242: # wants the output
1243: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1244: && &Apache::lonxml::in_redirection() ) ) {
1245: my @possibilities = keys(%available_texts);
1246: my $which =
1247: &Apache::loncommon::languages(\@possibilities) || 'default';
1248: $result = $available_texts{$which};
1249: }
1250: undef(%available_texts);
1251: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1252: return $result;
1253: }
1254:
1255:
1256: sub start_lang {
1257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1258: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1259: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1260: &Apache::lonxml::startredirection();
1261: }
1262: return '';
1263: }
1264:
1265: sub end_lang {
1266: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1267: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1268: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1269: my $result = &Apache::lonxml::endredirection();
1270: my $which = &Apache::lonxml::get_param('which',$parstack,
1271: $safeeval);
1272: $available_texts{$which} = $result;
1273: }
1274: return '';
1275: }
1276: }
1277:
1.170 www 1278: sub start_instructorcomment {
1.201 albertel 1279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1280:
1281: my $result;
1282:
1.339 albertel 1283: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1284: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284 albertel 1285: $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
1286: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1287: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1288: $parser,$style);
1.170 www 1289: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1290: }
1291: $result='';
1292: } elsif ($target eq 'edit') {
1293: $result .=&Apache::edit::tag_start($target,$token);
1294: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1295: }
1296: return $result;
1297: }
1298:
1299: sub end_instructorcomment {
1.159 albertel 1300: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1301: my $result;
1302: if ($target eq "edit") {
1303: $result.= &Apache::edit::tag_end($target,$token,'');
1304: }
1305: return $result;
1.4 tsai 1306: }
1307:
1308: sub start_while {
1.326 albertel 1309: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1310:
1.160 albertel 1311: my $result;
1.339 albertel 1312: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1313: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1314: my $code = $token->[2]->{'condition'};
1.4 tsai 1315:
1.160 albertel 1316: push( @Apache::structuretags::whileconds, $code);
1317: if (!$Apache::lonxml::default_homework_loaded) {
1318: &Apache::lonxml::default_homework_load($safeeval);
1319: }
1320: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1321: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1322: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1323: push( @Apache::structuretags::whileline, $token->[5]);
1324: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1325: if ( $result ) {
1326: &Apache::lonxml::newparser($parser,\$bodytext);
1327: }
1328: } elsif ($target eq 'edit') {
1329: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1330: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1331: $token,40);
1332: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1333: } elsif ($target eq 'modified') {
1334: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1335: $safeeval,'condition');
1336: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1337: }
1.160 albertel 1338: return $result;
1.4 tsai 1339: }
1340:
1341: sub end_while {
1.159 albertel 1342: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1343: my $result;
1344:
1.339 albertel 1345: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1346: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1347: my $code = pop(@Apache::structuretags::whileconds);
1348: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1349: my $line = pop(@Apache::structuretags::whileline);
1350: my $return = &Apache::run::run($code,$safeeval);
1351: my $starttime=time;
1352: my $error=0;
1353: while ($return) {
1354: if (time-$starttime >
1355: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1356: $return = 0; $error=1; next;
1.161 albertel 1357: }
1358: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1359: if ($target eq 'grade' || $target eq 'answer' ||
1360: $target eq 'analyze') {
1361: # grade/answer/analyze should produce no output but if we
1362: # are redirecting, the redirecter should know what to do
1363: # with the output
1364: if (!$Apache::lonxml::redirection) { undef($result); }
1365: }
1.161 albertel 1366: $return = &Apache::run::run($code,$safeeval);
1367: }
1368: if ($error) {
1.270 albertel 1369: &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 1370: }
1371: } elsif ($target eq "edit") {
1372: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1373: }
1.160 albertel 1374: return $result;
1.1 albertel 1375: }
1.6 tsai 1376:
1.160 albertel 1377: # <randomlist show="1">
1.6 tsai 1378: # <tag1>..</tag1>
1379: # <tag2>..</tag2>
1380: # <tag3>..</tag3>
1.160 albertel 1381: # ...
1.6 tsai 1382: # </randomlist>
1383: sub start_randomlist {
1.326 albertel 1384: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1385: my $result;
1.339 albertel 1386: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1387: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1388: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1389: my $b_parser= HTML::LCParser->new(\$body);
1390: $b_parser->xml_mode(1);
1391: $b_parser->marked_sections(1);
1.159 albertel 1392: my $b_tok;
1393: my @randomlist;
1394: my $list_item;
1395: while($b_tok = $b_parser->get_token() ) {
1396: if($b_tok->[0] eq 'S') { # start tag
1397: # get content of the tag until matching end tag
1398: # get all text upto the matching tag
1399: # and push the content into @randomlist
1400: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1401: $b_parser);
1402: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1403: push(@randomlist,$list_item);
1404: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1405: # $list_item</b>";
1406: }
1407: if($b_tok->[0] eq 'T') { # text
1408: # what to do with text in between tags?
1409: # print "<b>TEXT $b_tok->[1]</b><br />";
1410: }
1411: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1412: # print "<b>END-TAG $b_tok->[1]</b><br />";
1413: # }
1414: }
1.303 albertel 1415: if (@randomlist) {
1416: my @idx_arr = (0 .. $#randomlist);
1417: &Apache::structuretags::shuffle(\@idx_arr);
1418: my $bodytext = '';
1419: my $show=$#randomlist;
1420: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1421: $showarg--;
1422: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1423: for(0 .. $show) {
1424: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1425: }
1426: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1427: }
1428: } elsif ($target eq 'edit' ) {
1429: $result .=&Apache::edit::tag_start($target,$token);
1430: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1431: $token,5);
1432: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1433: } elsif ($target eq 'modified' ) {
1434: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1435: $safeeval,'show');
1436: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1437: }
1438: return $result;
1.7 tsai 1439: }
1440:
1441: sub shuffle {
1442: my $a=shift;
1443: my $i;
1.303 albertel 1444: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1445: &Apache::response::pushrandomnumber();
1.159 albertel 1446: for($i=@$a;--$i;) {
1447: my $j=int(&Math::Random::random_uniform() * ($i+1));
1448: next if $i == $j;
1449: @$a[$i,$j] = @$a[$j,$i];
1450: }
1.251 albertel 1451: &Apache::response::poprandomnumber();
1.7 tsai 1452: }
1.6 tsai 1453: }
1454:
1455: sub end_randomlist {
1.159 albertel 1456: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1457: my $result;
1458: if ($target eq 'edit' ) {
1459: $result=&Apache::edit::tag_end($target,$token,
1460: 'End Randomly Parsed Block');
1461: }
1462: return $result;
1.6 tsai 1463: }
1464:
1.283 albertel 1465: sub ordered_show_check {
1466: my $last_part=$Apache::inputtags::partlist[-2];
1467: my $in_order=
1468: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1469: my $in_order_show=1;
1470: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1471: $in_order_show=&Apache::response::check_status($last_part);
1472: }
1473: return $in_order_show;
1474: }
1475:
1.11 albertel 1476: sub start_part {
1.326 albertel 1477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 1478: if (!$Apache::lonxml::metamode) {
1479: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1480: # duedates.
1481: }
1.159 albertel 1482: my $result='';
1.386 albertel 1483: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 1484: $Apache::inputtags::part=$id;
1.177 albertel 1485: push(@Apache::inputtags::partlist,$id);
1486: @Apache::inputtags::response=();
1.159 albertel 1487: @Apache::inputtags::previous=();
1488: @Apache::inputtags::previous_version=();
1.241 albertel 1489: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1490: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1491: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1492: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1493: my $in_order_show=&ordered_show_check();
1.214 albertel 1494: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1495: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1496: &Apache::run::run($expression,$safeeval);
1.159 albertel 1497:
1498: if ($target eq 'meta') {
1.224 www 1499: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1500: return &Apache::response::mandatory_part_meta.
1501: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1502: } elsif ($target eq 'web' || $target eq 'grade' ||
1503: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1504: if ($hidden || !$in_order_show) {
1.326 albertel 1505: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 1506: } else {
1507: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1508: push (@Apache::inputtags::status,$status);
1509: my $expression='$external::datestatus="'.$status.'";';
1510: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1511: &Apache::run::run($expression,$safeeval);
1.284 albertel 1512: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1513: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1514: }
1.216 albertel 1515: if (( $status eq 'CLOSED' ) ||
1516: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1517: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1518: ( $status eq 'BANNED') ||
1519: ( $status eq 'UNAVAILABLE') ||
1520: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1521: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
1522: $style);
1.159 albertel 1523: if ( $target eq "web" ) {
1.211 albertel 1524: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1525: } elsif ( $target eq 'tex' ) {
1.284 albertel 1526: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1527: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1528: } else {
1.211 albertel 1529: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1530: }
1.159 albertel 1531: }
1532: } else {
1533: if ($target eq 'tex') {
1.284 albertel 1534: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1535: if ($$tagstack[-2] eq 'td') {
1.388 foxr 1536: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 1537: } else {
1538: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1539: }
1.195 sakharuk 1540: }
1.159 albertel 1541: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1542: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1543: my @allkeys = split /,/,$allkeys;
1544: my $allow_print_points = 0;
1545: foreach my $partial_key (@allkeys) {
1.230 albertel 1546: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1547: if ($1 ne '0') {$allow_print_points=1;}
1548: }
1549: }
1.275 albertel 1550: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1551: if (defined($maxtries) && $maxtries < 0) {
1552: $allow_print_points=0;
1553: }
1.302 albertel 1554: if (lc($env{'course.'.$env{'request.course.id'}.
1555: '.disableexampointprint'}) eq 'yes') {
1556: $allow_print_points=0;
1557: }
1.222 sakharuk 1558: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1559: } elsif ($target eq 'web') {
1.356 www 1560: $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159 albertel 1561: }
1562: }
1563: }
1564: } elsif ($target eq 'edit') {
1565: $result.=&Apache::edit::tag_start($target,$token);
1566: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1567: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1568: ' '.
1569: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1570: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1571: } elsif ($target eq 'modified') {
1572: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1573: $safeeval,'id','display');
1.159 albertel 1574: if ($constructtag) {
1.225 albertel 1575: #limiting ids to only letters numbers, and space
1.224 www 1576: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1577: $result = &Apache::edit::rebuild_tag($token);
1578: }
1579: }
1580: return $result;
1.11 albertel 1581: }
1582:
1583: sub end_part {
1.159 albertel 1584: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1585: &Apache::lonxml::debug("in end_part $target ");
1586: my $status=$Apache::inputtags::status['-1'];
1587: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 1588: my $in_order_show=&ordered_show_check();
1.321 albertel 1589: my $result;
1590: if (!$Apache::lonxml::metamode) {
1591: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 1592: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1593: }
1.312 albertel 1594: if ($target eq 'grade') {
1.249 albertel 1595: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 1596: !$hidden && $in_order_show) {
1.311 foxr 1597: $result.=&Apache::inputtags::grade;
1.249 albertel 1598: } else {
1599: # move any submission data to .hidden
1600: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1601: }
1.283 albertel 1602: } elsif (($target eq 'web' || $target eq 'tex') &&
1603: !$hidden && $in_order_show) {
1.159 albertel 1604: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1605: $target);
1.212 albertel 1606: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1607: $gradestatus='';
1608: }
1.311 foxr 1609: $result.=$gradestatus;
1.265 sakharuk 1610: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1611: } elsif ($target eq 'edit') {
1.311 foxr 1612: $result.=&Apache::edit::end_table();
1.322 albertel 1613: } elsif ($target eq 'modified') {
1614: $result .= $token->[2];
1.159 albertel 1615: }
1616: pop @Apache::inputtags::status;
1617: $Apache::inputtags::part='';
1.295 albertel 1618: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 1619: return $result;
1.11 albertel 1620: }
1.1 albertel 1621:
1.25 albertel 1622: sub start_preduedate {
1.326 albertel 1623: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 1624: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1625: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 1626: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 1627: if (!$Apache::lonhomework::scantronmode &&
1628: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1629: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1630: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 1631: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 1632: }
1.24 albertel 1633: }
1.159 albertel 1634: return '';
1.24 albertel 1635: }
1636:
1.25 albertel 1637: sub end_preduedate {
1.159 albertel 1638: return '';
1.24 albertel 1639: }
1640:
1.369 foxr 1641: # In all the modes where <postanswerdate> text is
1642: # displayable, all we do is eat up the text between the start/stop
1643: # tags if the conditions are not right to display it.
1.25 albertel 1644: sub start_postanswerdate {
1.326 albertel 1645: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 1646: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
1647: &Apache::lonnet::allowed('pav',
1648: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 1649: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 1650: $target eq 'tex' ) {
1.300 albertel 1651: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 1652: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
1653: (($target eq 'tex') && !$pav)) {
1.326 albertel 1654: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 1655: }
1656: }
1657: return '';
1.24 albertel 1658: }
1659:
1.25 albertel 1660: sub end_postanswerdate {
1.159 albertel 1661: return '';
1.24 albertel 1662: }
1663:
1.25 albertel 1664: sub start_notsolved {
1.326 albertel 1665: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1666: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 1667: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 1668: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1669: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1670: if ($gradestatus =~ /^correct/ &&
1671: &Apache::response::show_answer()) {
1.159 albertel 1672: &Apache::lonxml::debug("skipping");
1.326 albertel 1673: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 1674: }
1.24 albertel 1675: }
1.159 albertel 1676: return '';
1.24 albertel 1677: }
1678:
1.25 albertel 1679: sub end_notsolved {
1.159 albertel 1680: return '';
1.24 albertel 1681: }
1682:
1683: sub start_solved {
1.326 albertel 1684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1685: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1686: $target eq 'tex') {
1687: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1688: if ($gradestatus !~ /^correct/ ||
1689: !&Apache::response::show_answer()) {
1.326 albertel 1690: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 1691: }
1.24 albertel 1692: }
1.159 albertel 1693: return '';
1.24 albertel 1694: }
1695:
1696: sub end_solved {
1.248 albertel 1697: return '';
1698: }
1699:
1700: sub start_problemtype {
1.326 albertel 1701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 1702: my $result;
1.339 albertel 1703: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1704: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 1705: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1706: if (!defined($mode)) { $mode='show'; }
1707: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1708: my $found=0;
1709: foreach my $type (split(',',$for)) {
1710: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1711: }
1712: if ($mode eq 'show' && !$found) {
1.326 albertel 1713: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1714: }
1715: if ($mode eq 'hide' && $found) {
1.326 albertel 1716: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1717: }
1718: } elsif ($target eq 'edit') {
1719: $result .=&Apache::edit::tag_start($target,$token);
1720: $result.=&Apache::edit::select_arg('Mode:','mode',
1721: [['show','Show'],
1722: ['hide','Hide']]
1723: ,$token);
1724: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1725: [ ['exam','Exam/Quiz Problem'],
1726: ['survey','Survey'],
1727: ['problem','Homework Problem'] ]
1728: ,$token);
1729: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1730: } elsif ($target eq 'modified') {
1731: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1732: $safeeval,'mode','for');
1733: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1734: }
1735: return $result;
1736: }
1737:
1738: sub end_problemtype {
1.159 albertel 1739: return '';
1.24 albertel 1740: }
1.34 albertel 1741:
1742: sub start_startouttext {
1.159 albertel 1743: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1744: my @result=(''.'');
1745: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1746: return (@result);
1.34 albertel 1747: }
1.159 albertel 1748:
1.34 albertel 1749: sub end_startouttext {
1.326 albertel 1750: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1751: my $result='';
1752: my $text='';
1753:
1754: if ($target eq 'edit') {
1.326 albertel 1755: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211 albertel 1756: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1757: <td>".&mt('Delete:').
1.159 albertel 1758: &Apache::edit::deletelist($target,$token)
1759: ."</td>
1.42 albertel 1760: <td>".
1.159 albertel 1761: &Apache::edit::insertlist($target,$token).
1.362 albertel 1762: '</td><td align="right" valign="top">' .
1763: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 1764: &Apache::edit::end_row().
1.362 albertel 1765: &Apache::edit::start_spanning_row()."\n".
1.255 www 1766: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1767: }
1768: if ($target eq 'modified') {
1.219 albertel 1769: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1770: }
1771: if ($target eq 'tex') {
1772: $result .= '\noindent ';
1773: }
1774: return $result;
1.34 albertel 1775: }
1.159 albertel 1776:
1.34 albertel 1777: sub start_endouttext {
1.159 albertel 1778: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1779: my $result='';
1780: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1781: if ($target eq "modified") {
1782: $result='<endouttext />'.
1.377 albertel 1783: &Apache::edit::handle_insertafter('startouttext');
1784: }
1.159 albertel 1785: return $result;
1.34 albertel 1786: }
1.159 albertel 1787:
1.34 albertel 1788: sub end_endouttext {
1.159 albertel 1789: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1790: my @result=('','');
1791: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1792: return (@result);
1.34 albertel 1793: }
1.159 albertel 1794:
1.45 albertel 1795: sub delete_startouttext {
1.326 albertel 1796: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1797: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 1798: my $text=$$parser['-1']->get_text("/endouttext");
1799: my $ntoken=$$parser['-1']->get_token();
1800: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1801: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1802: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1803: # they did the last time round
1804: &Apache::lonxml::increasedepth($ntoken);
1805: &Apache::lonxml::decreasedepth($ntoken);
1806: return 1;
1.193 www 1807: }
1808:
1809: sub start_simpleeditbutton {
1810: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1811: my $result='';
1.284 albertel 1812: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 1813: ($target eq 'web') &&
1.330 albertel 1814: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 1815: my $url=$env{'request.noversionuri'};
1.193 www 1816: $url=~s/\?.*$//;
1.367 albertel 1817: my ($symb) = &Apache::lonnet::whichuser();
1.194 www 1818: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356 www 1819: '<a href="'.$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 1820: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1821: }
1822: return $result;
1823: }
1824:
1825: sub end_simpleeditbutton {
1826: return '';
1.45 albertel 1827: }
1.34 albertel 1828:
1.1 albertel 1829: 1;
1830: __END__
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