Annotation of loncom/homework/structuretags.pm, revision 1.325
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.325 ! albertel 4: # $Id: structuretags.pm,v 1.324 2005/11/21 21:51:29 albertel Exp $
1.74 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.254 www 28: ###
1.54 www 29:
1.133 sakharuk 30:
1.1 albertel 31: package Apache::structuretags;
32:
33: use strict;
34: use Apache::lonnet;
1.101 sakharuk 35: use Apache::File();
1.147 www 36: use Apache::lonmenu;
1.210 albertel 37: use Apache::lonlocal;
1.231 sakharuk 38: use Apache::lonxml;
1.267 albertel 39: use Time::HiRes qw( gettimeofday tv_interval );
1.78 harris41 40: BEGIN {
1.248 albertel 41: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
1.10 albertel 42: }
43:
44: sub start_web {
1.159 albertel 45: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.200 albertel 46: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
47: if ($target eq 'web') {
48: return $bodytext;
1.159 albertel 49: }
50: return '';
1.10 albertel 51: }
52:
53: sub end_web {
1.44 ng 54: return '';
1.10 albertel 55: }
56:
57: sub start_tex {
1.159 albertel 58: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.198 sakharuk 59: my $result='';
1.200 albertel 60: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
61: if ($target eq 'tex') {
62: return $bodytext.' ';
1.159 albertel 63: }
1.198 sakharuk 64: return $result;;
1.10 albertel 65: }
66:
67: sub end_tex {
1.44 ng 68: return '';
1.9 albertel 69: }
70:
1.290 albertel 71: sub body_tag_start {
72: my ($target,$background,$bgcolor)=@_;
73: my $body_tag_start='<body onload="'.&Apache::lonmenu::loadevents().'" '.
74: 'onunload="'.&Apache::lonmenu::unloadevents().'" ';
75: if ($env{'browser.imagesuppress'} eq 'on') { $background=''; }
76: if ($background) {
1.306 albertel 77: &Apache::lonxml::extlink($background);
1.290 albertel 78: $body_tag_start.='background="'.$background.'" ';
79: } else {
80: if (($bgcolor) && ($env{'browser.blackwhite'} ne 'on')) {
81: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
82: } else {
83: $body_tag_start.='bgcolor="#ffffff"';
84: }
85: }
86: if ($env{'browser.fontenhance'} eq 'on') {
87: $body_tag_start.=' style="font-size: x-large;" ';
88: }
89: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
1.297 albertel 90:
91: &Apache::lontexconvert::jsMath_reset();
1.290 albertel 92: if ($env{'environment.texengine'} eq 'jsMath') {
1.297 albertel 93: $body_tag_start.=&Apache::lontexconvert::jsMath_header();
1.290 albertel 94: }
95: return $body_tag_start;
96: }
1.291 albertel 97:
1.48 albertel 98: sub page_start {
1.159 albertel 99: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
100: my %found;
1.207 albertel 101: foreach my $taginside (@$tagstack) {
1.159 albertel 102: foreach my $taglookedfor ('html','body','form') {
103: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
104: }
105: }
106:
107: my $result;
108: my $head_tag_start;
109: if (!defined($found{'html'})) {
110: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
111: $parstack,$parser,$safeeval);
1.254 www 112: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target).
1.261 www 113: &Apache::lonhtmlcommon::htmlareaheaders().
1.270 albertel 114: &Apache::lonhtmlcommon::spellheader().
115: &Apache::lonxml::fontsettings();
1.159 albertel 116: }
117: my $body_tag_start;
1.318 albertel 118: if (!defined($found{'body'}) && $env{'request.state'} eq 'construct') {
119: if ($env{'environment.remote'} eq 'off') {
120: if ($target eq 'web' || $target eq 'edit') {
121: $body_tag_start=&Apache::loncommon::bodytag();
122: $body_tag_start.=&Apache::lonxml::message_location();
123: }
124: } else {
125: if ($target eq 'web' || $target eq 'edit') {
126: $body_tag_start=&Apache::loncommon::bodytag(undef,undef,undef,1);
127: $body_tag_start.=&Apache::lonxml::message_location();
128: }
1.297 albertel 129: }
1.272 albertel 130: } elsif (!defined($found{'body'})) {
1.159 albertel 131: my $background=&Apache::lonxml::get_param('background',$parstack,
132: $safeeval);
1.290 albertel 133: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
134: $safeeval);
1.299 albertel 135: $body_tag_start=&body_tag_start($target,$background,$bgcolor);
1.291 albertel 136: if ( ($target eq 'web' || $target eq 'webgrade')
137: && $env{'request.state'} ne 'construct') {
1.165 albertel 138: my ($symb,undef,undef,undef,$publicuser)=
139: &Apache::lonxml::whichuser();
140: if ($symb eq '' && !$publicuser) {
1.159 albertel 141: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
1.211 albertel 142: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
1.159 albertel 143: $body_tag_start.=$help;
144: }
145: }
1.245 albertel 146: $body_tag_start.=&Apache::lonxml::message_location();
1.159 albertel 147: }
148: my $form_tag_start;
149: if (!defined($found{'form'})) {
1.281 albertel 150: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="POST" action="';
1.284 albertel 151: my $uri=$env{'request.uri'};
152: if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
1.271 albertel 153: $form_tag_start.=$uri.'">';
1.159 albertel 154: }
155: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105 albertel 156: }
157:
1.141 matthew 158: #use Time::HiRes();
1.105 albertel 159: sub get_resource_name {
1.159 albertel 160: my ($parstack,$safeeval)=@_;
1.204 albertel 161: if (defined($Apache::lonhomework::name)) {
162: return $Apache::lonhomework::name;
163: }
1.279 albertel 164: my ($symb)=&Apache::lonxml::whichuser();
165: my $name=&Apache::lonnet::gettitle($symb);
1.159 albertel 166: if ($name eq '') {
167: $name=&Apache::lonnet::EXT('resource.title');
168: if ($name eq 'con_lost') { $name = ''; }
169: }
1.204 albertel 170: if ($name!~/\S+/) {
1.284 albertel 171: $name=$env{'request.uri'};
1.205 albertel 172: $name=~s-.*/([^/]+)$-$1-;
1.204 albertel 173: }
1.159 albertel 174: $Apache::lonhomework::name=$name;
175: return $name;
1.105 albertel 176: }
177:
178: sub setup_rndseed {
1.159 albertel 179: my ($safeeval)=@_;
180: my $rndseed;
1.162 albertel 181: my ($symb)=&Apache::lonxml::whichuser();
1.284 albertel 182: if ($env{'request.state'} eq "construct" || $symb eq '' ||
1.247 albertel 183: $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 184: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 185: ['rndseed']);
1.284 albertel 186: $rndseed=$env{'form.rndseed'};
1.159 albertel 187: if (!$rndseed) {
1.162 albertel 188: $rndseed=$Apache::lonhomework::history{'rndseed'};
189: if (!$rndseed) {
190: $rndseed=time;
191: }
1.284 albertel 192: $env{'form.rndseed'}=$rndseed;
1.162 albertel 193: }
1.284 albertel 194: if ($env{'form.resetdata'} eq &mt('New Problem Variation') ||
195: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 196: srand(time);
197: $rndseed=int(rand(2100000000));
1.284 albertel 198: $env{'form.rndseed'}=$rndseed;
199: delete($env{'form.resetdata'});
200: delete($env{'form.newrandomization'});
1.159 albertel 201: }
1.187 albertel 202: if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307 albertel 203: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 204: }
1.247 albertel 205: if ($Apache::lonhomework::history{'resource.CODE'}) {
206: $rndseed=&Apache::lonnet::rndseed();
207: }
1.221 albertel 208: if ($safeeval) {
209: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 210: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 211: }
1.159 albertel 212: }
213: return $rndseed;
1.105 albertel 214: }
215:
1.268 albertel 216: sub remember_problem_state {
217: return '
1.284 albertel 218: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
219: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
220: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 221: }
222:
1.105 albertel 223: sub problem_edit_header {
1.268 albertel 224: return '<input type="hidden" name="submitted" value="edit" />'.
225: &Apache::structuretags::remember_problem_state().'
1.210 albertel 226: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 227: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
228: <input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
229: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
230: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
231: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.260 albertel 232: &Apache::loncommon::help_open_menu('','Problem Editing Help','Problem_Editor_XML_Index','',5,'Authoring',undef,undef,undef,'Problem Editing Help')
233: .'</td></tr></table>'.
1.282 albertel 234: '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 235: }
236:
237: sub problem_edit_footer {
1.210 albertel 238: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 239: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
240: &Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields).
1.280 albertel 241: "\n</form>\n".&Apache::loncommon::endbodytag()."\n</html>";
1.105 albertel 242: }
243:
1.235 albertel 244: sub option {
245: my ($value,$name) = @_;
246: my $result ="<option value='".$value."' ";
1.284 albertel 247: if ($env{'form.'.$name} eq $value) {
1.235 albertel 248: $result.=" selected='on' ";
249: }
250: $result.='>';
251: return $result;
252: }
253:
1.105 albertel 254: sub problem_web_to_edit_header {
1.159 albertel 255: my ($rndseed)=@_;
1.313 albertel 256: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
257: if (!$Apache::lonhomework::parsing_a_task) {
258: $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
259: }
260: $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 261: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
262: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 263: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270 albertel 264: <input type="text" name="rndseed" size="10" value="'.
1.175 albertel 265: $rndseed.'"
1.270 albertel 266: onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.281 albertel 267: <label><input type="checkbox" name="showallfoils" ';
1.315 albertel 268: my $show_all_foils_text =
269: ($Apache::lonhomework::parsing_a_task) ?
270: &mt(' Show All Instances')
271: : &mt(' Show All Foils');
272:
1.284 albertel 273: if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.315 albertel 274: $result.= ' />'.$show_all_foils_text.
1.228 www 275: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.281 albertel 276: '</label><hr />';
1.313 albertel 277: if (!$Apache::lonhomework::parsing_a_task) {
278: $result.="
1.235 albertel 279: <nobr>
280: Problem Status:
281: <select name='problemstate'>
1.270 albertel 282: <option value=''></option>
1.235 albertel 283: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
284: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
285: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
286: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
287: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
288: </select>
289: </nobr>
290: <nobr>
291: Problem Type:
292: <select name='problemtype'>
1.270 albertel 293: <option value=''></option>
1.242 albertel 294: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
295: ".&option('problem','problemtype').&mt("Homework problem")."</option>
296: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 297: </select>
298: </nobr>
299: <nobr>
300: Feedback Mode:
301: <select name='problemstatus'>
302: <option value=''></option>
1.242 albertel 303: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
304: ".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
1.235 albertel 305: </select>
306: </nobr>
1.242 albertel 307: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 308: <hr />";
1.313 albertel 309: my $numtoanalyze=$env{'form.numtoanalyze'};
310: if (!$numtoanalyze) { $numtoanalyze=20; }
311: $result.= '<input type="submit" name="problemmode" value='.
312: &mt('"Calculate answers').'" /> for
1.136 albertel 313: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 314: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
315: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 316: '',undef,undef,300).
1.210 albertel 317: '<hr />';
1.313 albertel 318: }
1.159 albertel 319: return $result;
1.48 albertel 320: }
321:
1.65 albertel 322: sub initialize_storage {
1.159 albertel 323: %Apache::lonhomework::results=();
1.162 albertel 324: %Apache::lonhomework::history=();
1.159 albertel 325: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.284 albertel 326: if ($env{'request.state'} eq 'construct' || $symb eq '') {
1.159 albertel 327: %Apache::lonhomework::history=
1.284 albertel 328: &Apache::lonnet::tmprestore($env{'request.uri'},'',$domain,$name);
1.159 albertel 329: my ($temp)=keys %Apache::lonhomework::history ;
330: &Apache::lonxml::debug("Return message of $temp");
331: } else {
332: %Apache::lonhomework::history=
333: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
334: }
335: #ignore error conditions
1.67 albertel 336: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 337: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 338: }
339:
340: # -------------------------------------------------------------finalize_storage
341: # Stores away the result has to a student's environment
342: # checks form.grade_ for specific values, other wises stores
343: # to the running users environment
1.285 raeburn 344: # Will increment totals for attempts, students, and corrects
345: # if running user has student role.
1.65 albertel 346: sub finalize_storage {
1.159 albertel 347: my $result;
1.289 albertel 348: if (%Apache::lonhomework::results) {
1.323 albertel 349: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
350: delete(@Apache::lonhomework::results{@remove});
1.159 albertel 351: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.284 albertel 352: if ($env{'request.state'} eq 'construct' || $symb eq '') {
353: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 354: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.284 albertel 355: $env{'request.uri'},'',$domain,$name);
1.159 albertel 356: &Apache::lonxml::debug('Construct Store return message:'.$result);
357: } else {
358: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
359: $symb,$courseid,$domain,$name);
360: &Apache::lonxml::debug('Store return message:'.$result);
1.285 raeburn 361: if ($env{'request.role'} =~/^st/) {
362: &store_aggregates($symb,$courseid);
363: }
1.159 albertel 364: }
1.323 albertel 365: } else {
366: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 367: }
1.159 albertel 368: return $result;
1.65 albertel 369: }
1.289 albertel 370: use Data::Dumper;
1.65 albertel 371:
1.285 raeburn 372: # -------------------------------------------------------------store_aggregates
373: # Sends hash of values to be incremented in nohist_resourcetracker.db
374: # for the course. Increments total number of attempts, unique students
375: # and corrects for each part for an instance of a problem, as appropriate.
376: sub store_aggregates {
377: my ($symb,$courseid) = @_;
1.286 albertel 378: my %aggregate;
379: my @parts;
1.288 albertel 380: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
381: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 382: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 383: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 384: push(@parts, $1);
1.285 raeburn 385: }
386: }
1.286 albertel 387: foreach my $part (@parts) {
388: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
389: eq 'APPROX_ANS' ||
390: $Apache::lonhomework::results{'resource.'.$part.'.award'}
391: eq 'EXACT_ANS') {
1.287 albertel 392: $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285 raeburn 393: }
1.286 albertel 394: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287 albertel 395: $aggregate{$symb."\0".$part."\0users"} = 1;
1.292 raeburn 396: } else {
1.293 albertel 397: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1.292 raeburn 398: if ($last_reset) {
1.293 albertel 399: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292 raeburn 400: $aggregate{$symb."\0".$part."\0users"} = 1;
401: }
402: }
1.285 raeburn 403: }
1.287 albertel 404: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 405: }
1.292 raeburn 406: if (keys (%aggregate) > 0) {
1.289 albertel 407: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 408: $cdomain,$cname);
409: }
410: }
1.289 albertel 411:
1.65 albertel 412: sub checkout_msg {
1.211 albertel 413: my %lt=&Apache::lonlocal::texthash(
414: 'resource'=>'The resource needs to be checked out',
415: '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.',
416: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
417: 'checkout'=>'Check out Exam for Viewing',
418: 'checkout?'=>'Check out Exam?');
1.159 albertel 419: return (<<ENDCHECKOUT);
1.211 albertel 420: <h2>$lt{'resource'}</h2>
421: <p>$lt{'id_expln'}</p>
422: <font color="red">
423: <p>$lt{'warning'}</p>
1.91 albertel 424: </font>
1.284 albertel 425: <form name="checkout" method="POST" action="$env{'request.uri'}">
1.91 albertel 426: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 427: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 428: </form>
429: ENDCHECKOUT
430: }
431:
1.252 albertel 432: sub firstaccess_msg {
1.253 albertel 433: my ($time,$symb)=@_;
434: my ($map)=&Apache::lonnet::decode_symb($symb);
435: my $foldertitle=&Apache::lonnet::gettitle($map);
436: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.252 albertel 437: return (<<ENDCHECKOUT);
1.253 albertel 438: <h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
1.284 albertel 439: <form name="markaccess" method="POST" action="$env{'request.uri'}">
1.252 albertel 440: <input type="hidden" name="markaccess" value="yes" />
441: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
442: </form>
443: ENDCHECKOUT
444: }
445:
1.204 albertel 446: sub init_problem_globals {
447: my ($type)=@_;
448: #initialize globals
1.308 foxr 449: # For problems, we start out in part 0 (outside a <part> tag).
450: # and part 0 is used to describe the main body of the <problem>
451: #
1.204 albertel 452: if ($type eq 'problem') {
453: $Apache::inputtags::part='0';
454: @Apache::inputtags::partlist=('0');
1.266 albertel 455: $Apache::lonhomework::problemstatus=&get_problem_status('0');
456: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 457:
1.266 albertel 458: } elsif ($type eq 'library') {
1.204 albertel 459: $Apache::inputtags::part='';
460: @Apache::inputtags::partlist=();
461: $Apache::lonhomework::problemstatus='';
1.266 albertel 462: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 463:
1.304 albertel 464: } elsif ($type eq 'Task') {
465: $Apache::inputtags::part='0';
466: @Apache::inputtags::partlist=('0');
467: $Apache::lonhomework::problemstatus='';
468: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 469: }
470: @Apache::inputtags::responselist = ();
471: @Apache::inputtags::importlist = ();
472: @Apache::inputtags::previous=();
473: @Apache::inputtags::previous_version=();
474: $Apache::structuretags::printanswer='No';
475: @Apache::structuretags::whileconds=();
476: @Apache::structuretags::whilebody=();
477: @Apache::structuretags::whileline=();
478: $Apache::lonhomework::scantronmode=0;
479: undef($Apache::lonhomework::name);
480:
481: }
482:
483: sub reset_problem_globals {
484: my ($type)=@_;
485: undef(%Apache::lonhomework::history);
486: undef(%Apache::lonhomework::results);
487: undef($Apache::inputtags::part);
1.208 albertel 488: #don't undef this, lonhomework.pm takes care of this, we use this to
489: #detect if we try to do 2 problems in one file
490: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 491: undef($Apache::lonhomework::name);
492: }
493:
1.241 albertel 494: sub set_problem_state {
1.240 albertel 495: my ($part)=@_;
1.284 albertel 496: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 497: $Apache::lonhomework::history{"resource.$part.solved"}=
498: 'correct_by_student';
499: }
500: }
501:
1.241 albertel 502: sub get_problem_status {
503: my ($part)=@_;
1.267 albertel 504: my $problem_status;
1.284 albertel 505: if ($env{'request.state'} eq 'construct' &&
506: defined($env{'form.problemstatus'})) {
507: $problem_status=$env{'form.problemstatus'};
1.267 albertel 508: } else {
509: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
510: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 511: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 512: }
513: return $problem_status;
514: }
515:
1.9 albertel 516: sub start_problem {
1.159 albertel 517: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 518:
1.311 foxr 519: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 520: if (!$Apache::lonxml::metamode) {
521: &Apache::lonxml::startredirection();
522: }
1.311 foxr 523:
1.308 foxr 524: # Problems don't nest and we don't allow more than one <problem> in
525: # a .problem file.
526: #
1.184 albertel 527: if ( $Apache::inputtags::part ne '' ||
528: $Apache::lonhomework::parsing_a_problem) {
529: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
530: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.159 albertel 531: return '';
532: }
1.184 albertel 533:
534: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 535: &init_problem_globals('problem');
1.166 albertel 536:
1.284 albertel 537: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 538: $Apache::lonhomework::scantronmode=1;
539: }
1.161 albertel 540:
1.246 albertel 541: &initialize_storage();
1.159 albertel 542: if ($target ne 'analyze') {
543: if ($target eq 'web') {
544: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.238 albertel 545: }
1.284 albertel 546: if ($env{'request.state'} eq 'construct') { &set_problem_state('0'); }
1.159 albertel 547: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284 albertel 548: if (($env{'request.state'} eq 'construct') &&
549: defined($env{'form.problemtype'})) {
550: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 551: }
1.240 albertel 552: &Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
1.159 albertel 553: }
1.164 albertel 554: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 555: my $uri=$env{'request.uri'};
1.159 albertel 556: if ($uri=~/\.(\w+)$/) {
557: $Apache::lonhomework::type=$1;
558: &Apache::lonxml::debug("Using type of $1");
559: } else {
560: $Apache::lonhomework::type='problem';
561: &Apache::lonxml::debug("Using default type, problem, :$uri:");
562: }
1.87 albertel 563: }
1.301 albertel 564: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 565:
1.159 albertel 566: #added vars to the scripting enviroment
1.213 albertel 567: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 568: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 569: &Apache::run::run($expression,$safeeval);
1.159 albertel 570: my $status;
571: my $accessmsg;
572:
573: #should get back a <html> or the neccesary stuff to start XML/MathML
574: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
575: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.284 albertel 576: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 577:
578: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
579: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
580: $target eq 'tex') {
581: #handle exam checkout
582: if ($Apache::lonhomework::type eq 'exam') {
583: my $token=
584: $Apache::lonhomework::history{"resource.0.outtoken"};
1.284 albertel 585: if (($env{'form.doescheckout'}) && (!$token)) {
1.159 albertel 586: $token=&Apache::lonxml::maketoken();
587: $Apache::lonhomework::history{"resource.0.outtoken"}=
588: $token;
589: }
590: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 591: }
1.284 albertel 592: if ($env{'form.markaccess'}) {
1.252 albertel 593: &Apache::lonnet::set_first_access('map');
594: }
1.159 albertel 595: #handle rand seed in construction space
596: my $rndseed=&setup_rndseed($safeeval);
1.162 albertel 597: my ($symb)=&Apache::lonxml::whichuser();
1.284 albertel 598: if ($env{'request.state'} ne "construct" && $symb eq '') {
1.162 albertel 599: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
600: $rndseed.'" />'.
601: '<input type="submit" name="resetdata"
1.211 albertel 602: value="'.&mt('New Problem Variation').'" />'.
1.164 albertel 603: '<input type="hidden" name="username"
1.284 albertel 604: value="'.$env{'form.username'}.'" />';
605: if ($env{'user.adv'}) {
1.267 albertel 606: $form_tag_start.=
1.300 albertel 607: ' <label><input type="checkbox" name="showallfoils" ';
1.284 albertel 608: if (defined($env{'form.showallfoils'})) {
1.267 albertel 609: $form_tag_start.='checked="on"';
610: }
1.300 albertel 611: $form_tag_start.= ' />'.&mt(' Show All Foils').
612: '</label>';
1.267 albertel 613: }
614: $form_tag_start.='<hr />';
1.162 albertel 615: }
1.324 albertel 616:
617: ($status,$accessmsg,my $slot_name,my $slot) =
618: &Apache::lonhomework::check_slot_access('0','problem');
1.159 albertel 619: push (@Apache::inputtags::status,$status);
1.324 albertel 620:
1.159 albertel 621: my $expression='$external::datestatus="'.$status.'";';
622: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
623: &Apache::run::run($expression,$safeeval);
624: &Apache::lonxml::debug("Got $status");
1.324 albertel 625:
1.159 albertel 626: if (( $status eq 'CLOSED' ) ||
627: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 628: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 629: ( $status eq 'BANNED') ||
1.216 albertel 630: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 631: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 632: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 633: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
634: if ( $target eq "web" ) {
635: $result.= $head_tag_start.'</head>';
636: my $msg=$body_tag_start;
637: if ($status eq 'UNAVAILABLE') {
1.245 albertel 638: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 639: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 640: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 641: }
1.216 albertel 642: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.159 albertel 643: $msg.='The problem '.$accessmsg;
644: } elsif ($status eq 'UNCHECKEDOUT') {
645: $msg.=&checkout_msg;
1.252 albertel 646: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 647: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 ! albertel 648: } elsif ($status eq 'NOT_IN_A_SLOT') {
! 649: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159 albertel 650: }
651: $result.=$msg.'<br />';
652: } elsif ($target eq 'tex') {
653: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
654: if ($status eq 'UNAVAILABLE') {
1.211 albertel 655: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 656: } else {
1.211 albertel 657: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 658: }
659: }
1.324 albertel 660: } elsif ($status eq 'NEEDS_CHECKIN') {
661: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
662: if ($target eq 'web') {
663: $result .= $head_tag_start.'</head>';
664: $result .= $body_tag_start;
665: $result .= &Apache::bridgetask::proctor_validation_screen();
666: } elsif ($target eq 'grade') {
667: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
668: 'problem');
669: }
1.159 albertel 670: } elsif ($target eq 'web') {
671: my $name= &get_resource_name($parstack,$safeeval);
1.227 albertel 672: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 673: $body_tag_start \n $form_tag_start".
1.227 albertel 674: '<input type="hidden" name="submitted" value="yes" />';
675: # create a page header and exit
1.284 albertel 676: if ($env{'request.state'} eq "construct") {
677: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227 albertel 678: }
679: # if we are viewing someone else preserve that info
1.284 albertel 680: if (defined $env{'form.grade_symb'}) {
1.227 albertel 681: foreach my $field ('symb','courseid','domain','username') {
682: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 683: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 684: }
685: }
686: } elsif ($target eq 'tex') {
1.319 foxr 687: $result .= 'INSERTTEXFRONTMATTERHERE';
688:
1.99 sakharuk 689: }
1.159 albertel 690: } elsif ($target eq 'edit') {
691: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
692: &problem_edit_header();
1.226 albertel 693: $Apache::lonxml::warnings_error_header=
694: &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 695: my $temp=&Apache::edit::insertlist($target,$token);
696: $result.=$temp;
697: } elsif ($target eq 'modified') {
698: $result=$token->[4];
699: $result.=&Apache::edit::handle_insert();
700: } else {
701: # page_start returned a starting result, delete it if we don't need it
702: $result = '';
1.99 sakharuk 703: }
1.159 albertel 704: return $result;
1.9 albertel 705: }
706:
707: sub end_problem {
1.159 albertel 708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 709: my $result;
1.310 foxr 710:
1.321 albertel 711: if (!$Apache::lonxml::metamode) {
712: $result = &Apache::lonxml::endredirection(); #started in &start_problem
713: }
1.319 foxr 714:
715: if ($target eq 'tex') {
1.321 albertel 716:
717: # Figure out the front matter and replace the
718: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
719: # this in end_problem because whether or not we display due
720: # dates depends on whether due dates have already been
721: # displayed in the problem parts.
722:
1.319 foxr 723: my $frontmatter = '';
724: my $startminipage = '';
725: if (not $env{'form.problem_split'}=~/yes/) {
726: $startminipage = '\begin{minipage}{\textwidth}';
727: }
728: my $id = $Apache::inputtags::part;
729: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
730: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
731: my @packages = split /,/,$packages;
732: my $allow_print_points = 0;
733: foreach my $partial_key (@packages) {
734: if ($partial_key=~m/^part_0$/) {
735: $allow_print_points=1;
736: }
737: }
738: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
739: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
740: if (lc($env{'course.'.$env{'request.course.id'}.
741: '.disableexampointprint'}) eq 'yes') {
742: $allow_print_points=0;
743: }
744: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
745: 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 ';
746: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
747: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
748:
749: # Figure out what the due date is and if we need to print
750: # it in the problem header. We have been logging the
751: # last due date written to file.
752:
753: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
754: my $duedate = POSIX::strftime("%c",localtime($duetime));
755: my $temp_file;
756: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
757:
758: # Figure out what the last printed due date is or set it
759: # to the epoch if no duedates have been printed.
760:
761: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
762: if (-e $filename) {
763: $temp_file = Apache::File->new($filename);
764: my @due_file = <$temp_file>;
765: $due_file_content = $due_file[$#due_file];
766: chomp $due_file_content;
767: }
768:
769: # We display the due date iff it is not the same as the last
770: # duedate in problem header ($due_file_content), and
771: # none of our parts displayed a duedate.
772: #
773: my $parts_with_displayduedate;
774: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
775: $parts_with_displayduedate =
776: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
777: } else {
778: $parts_with_displayduedate = 0;
779: }
780: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
781: $temp_file = Apache::File->new('>'.$filename);
782: print $temp_file "$duetime\n";
783: if (not $env{'request.symb'} =~ m/\.page_/) {
784: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
785: $frontmatter .= $begin_doc.
786: '\textit{Due date: '.$duedate.'} '.$toc_line;
787: } else {
788: $frontmatter.= $begin_doc.$toc_line;
789: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
790: }
791: } else {
792: $frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
793: }
794: } else {
795: if (not $env{'request.symb'} =~ m/\.page_/) {
796: $frontmatter .= $begin_doc.$toc_line;
797: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
798: } else {
799: $frontmatter .= '\vskip 1mm \\\\\\\\';
800: }
801: }
802: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
803: }
804:
1.159 albertel 805: my $status=$Apache::inputtags::status['-1'];
806: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
807: $target eq 'tex') {
1.249 albertel 808: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 809: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 810: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
811: &Apache::inputtags::grade;
1.324 albertel 812: } elsif ($status eq 'NEEDS_CHECKIN') {
813: # no need to grade, and don't want to hide data
1.249 albertel 814: } else {
815: # move any submission data to .hidden
816: &Apache::inputtags::hidealldata($Apache::inputtags::part);
817: }
1.159 albertel 818: } elsif ( ($target eq 'web' || $target eq 'tex') &&
819: $Apache::inputtags::part eq '0' &&
1.252 albertel 820: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 821: # if part is zero, no <part>s existed, so we need show the current
822: # grading status
823: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
824: $result.= $gradestatus;
825: }
826: if (
1.284 albertel 827: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 828: ($target eq 'answer') || ($target eq 'tex')
829: ) {
1.227 albertel 830: if ($target ne 'tex' &&
1.284 albertel 831: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 832: $result.="</form>";
833: $result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);
1.159 albertel 834: }
835: if ($target eq 'web') {
1.281 albertel 836: $result.=&Apache::lonxml::xmlend().'</html>';
1.159 albertel 837: } elsif ($target eq 'tex') {
1.178 sakharuk 838: my $endminipage = '';
1.284 albertel 839: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 840: $endminipage = '\end{minipage}';
841: }
1.284 albertel 842: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 843: $result.=&Apache::lonxml::xmlend($target,$parser);
1.257 sakharuk 844: $result=~s/<\/html>//;
1.159 albertel 845: } else {
1.262 sakharuk 846: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 847: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 848: $result .= $endminipage.'\end{document} ';
849: } else {
850: $result .= '';
851: }
1.159 albertel 852: }
853: }
854: }
855: if ($target eq 'grade') {
856: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
857: &finalize_storage();
858: }
1.284 albertel 859: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
860: && $env{'form.answer_output_mode'} ne 'tex') {
1.294 albertel 861: $result.=&Apache::lonxml::xmlend().'</html>';
862: # normally we get it from above, but in CSTR
1.172 albertel 863: # we always show answer mode too.
1.159 albertel 864: }
865: } elsif ($target eq 'meta') {
866: if ($Apache::inputtags::part eq '0') {
1.179 albertel 867: @Apache::inputtags::response=();
1.159 albertel 868: $result=&Apache::response::mandatory_part_meta;
869: }
1.215 albertel 870: $result.=&Apache::response::meta_part_order();
1.258 albertel 871: $result.=&Apache::response::meta_response_order();
1.159 albertel 872: } elsif ($target eq 'edit') {
873: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 874: $result .= &problem_edit_footer();
1.320 albertel 875: } elsif ($target eq 'modified') {
876: $result .= $token->[2];
877: $result.=&Apache::edit::handle_insertafter($token->[1]);
1.159 albertel 878: }
1.155 albertel 879:
1.284 albertel 880: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 881: &Apache::inputtags::check_for_duplicate_ids();
882: }
1.204 albertel 883:
884: &reset_problem_globals('problem');
1.159 albertel 885:
886: return $result;
1.48 albertel 887: }
888:
1.108 albertel 889:
1.48 albertel 890: sub start_library {
1.159 albertel 891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
892: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.244 albertel 893: if ($$tagstack[0] eq 'library') {
894: &init_problem_globals('library');
895: $Apache::lonhomework::type='problem';
896: }
1.159 albertel 897: if ($target eq 'edit') {
898: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
899: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
900: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
901: &problem_edit_header();
902: my $temp=&Apache::edit::insertlist($target,$token);
903: $result.=$temp;
904: } elsif ($target eq 'modified') {
905: $result=$token->[4];
906: $result.=&Apache::edit::handle_insert();
907: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
1.284 albertel 908: $env{'request.state'} eq "construct" ) {
1.159 albertel 909: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
910: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
911: my $name=&get_resource_name($parstack,$safeeval);
912: my $rndseed=&setup_rndseed($safeeval);
913: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 914: $body_tag_start \n $form_tag_start".
1.159 albertel 915: '<input type="hidden" name="submitted" value="yes" />';
916: $result.=&problem_web_to_edit_header($rndseed);
917: }
918: return $result;
1.48 albertel 919: }
920:
921: sub end_library {
1.159 albertel 922: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
923: my $result='';
924: if ($target eq 'edit') {
925: $result=&problem_edit_footer();
926: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
1.284 albertel 927: $env{'request.state'} eq "construct") {
1.280 albertel 928: $result.='</form>'.&Apache::loncommon::endbodytag().
929: &Apache::lonxml::xmlend();
1.159 albertel 930: }
1.204 albertel 931: if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
1.159 albertel 932: return $result;
1.197 www 933: }
934:
935: sub start_definetag {
936: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
937:
938: my $result;
939:
940: my $name = $token->[2]->{'name'};
941: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
942: if ($name=~/^\//) {
943: $result=
944: '<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
945: } else {
946: $result=
947: '<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
948: }
949: $skip=~s/\</\<\;/gs;
950: $skip=~s/\>/\>\;/gs;
951: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
952: return $result;
953: }
954:
955: sub end_definetag {
956: return '';
1.1 albertel 957: }
958:
959: sub start_block {
1.201 albertel 960: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 961:
962: my $result;
1.1 albertel 963:
1.160 albertel 964: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.131 albertel 965: $target eq 'tex' || $target eq 'analyze') {
1.159 albertel 966: my $code = $token->[2]->{'condition'};
1.201 albertel 967: if (defined($code)) {
1.137 albertel 968: if (!$Apache::lonxml::default_homework_loaded) {
969: &Apache::lonxml::default_homework_load($safeeval);
970: }
1.131 albertel 971: $result = &Apache::run::run($code,$safeeval);
972: &Apache::lonxml::debug("block :$code: returned :$result:");
973: } else {
974: $result='1';
975: }
976: if ( ! $result ) {
1.201 albertel 977: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 978: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
979: }
980: $result='';
981: } elsif ($target eq 'edit') {
982: $result .=&Apache::edit::tag_start($target,$token);
983: $result .=&Apache::edit::text_arg('Test Condition:','condition',
984: $token,40);
985: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
986: } elsif ($target eq 'modified') {
987: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
988: $safeeval,'condition');
989: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 990: }
1.131 albertel 991: return $result;
1.1 albertel 992: }
993:
994: sub end_block {
1.167 www 995: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
996: my $result;
997: if ($target eq "edit") {
998: $result.= &Apache::edit::tag_end($target,$token,'');
999: }
1000: return $result;
1001: }
1002:
1003: sub start_languageblock {
1.201 albertel 1004: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1005:
1006: my $result;
1007:
1008: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1009: $target eq 'tex' || $target eq 'analyze') {
1.201 albertel 1010: my $include = $token->[2]->{'include'};
1011: my $exclude = $token->[2]->{'exclude'};
1012: my %languages=&Apache::loncommon::display_languages();
1013: $result='1';
1014: if ($include) {
1015: $result='';
1016: foreach (split(/\,/,$include)) {
1017: if ($languages{$_}) { $result='1'; }
1018: }
1019: }
1020: if ($exclude) {
1021: foreach (split(/\,/,$exclude)) {
1022: if ($languages{$_}) { $result='0'; }
1023: }
1024: }
1025: if ( ! $result ) {
1026: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1027: $style);
1028: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1029: }
1030: $result='';
1.167 www 1031: } elsif ($target eq 'edit') {
1032: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1033: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1034: $token,40);
1.211 albertel 1035: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1036: $token,40);
1037: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1038: } elsif ($target eq 'modified') {
1039: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1040: $safeeval,'include',
1041: 'exclude');
1.167 www 1042: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1043: }
1044: return $result;
1045: }
1046:
1047: sub end_languageblock {
1.170 www 1048: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1049: my $result;
1.201 albertel 1050: if ($target eq "edit") {
1.170 www 1051: $result.= &Apache::edit::tag_end($target,$token,'');
1052: }
1053: return $result;
1054: }
1055:
1056: sub start_instructorcomment {
1.201 albertel 1057: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1058:
1059: my $result;
1060:
1061: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1062: $target eq 'tex' || $target eq 'analyze') {
1.284 albertel 1063: $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
1064: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1065: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1066: $parser,$style);
1.170 www 1067: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1068: }
1069: $result='';
1070: } elsif ($target eq 'edit') {
1071: $result .=&Apache::edit::tag_start($target,$token);
1072: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1073: }
1074: return $result;
1075: }
1076:
1077: sub end_instructorcomment {
1.159 albertel 1078: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1079: my $result;
1080: if ($target eq "edit") {
1081: $result.= &Apache::edit::tag_end($target,$token,'');
1082: }
1083: return $result;
1.4 tsai 1084: }
1085:
1086: sub start_while {
1.159 albertel 1087: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1088:
1.160 albertel 1089: my $result;
1.161 albertel 1090: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.160 albertel 1091: $target eq 'tex' || $target eq 'analyze') {
1092: my $code = $token->[2]->{'condition'};
1.4 tsai 1093:
1.160 albertel 1094: push( @Apache::structuretags::whileconds, $code);
1095: if (!$Apache::lonxml::default_homework_loaded) {
1096: &Apache::lonxml::default_homework_load($safeeval);
1097: }
1098: my $result = &Apache::run::run($code,$safeeval);
1.161 albertel 1099: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);
1.160 albertel 1100: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1101: push( @Apache::structuretags::whileline, $token->[5]);
1102: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1103: if ( $result ) {
1104: &Apache::lonxml::newparser($parser,\$bodytext);
1105: }
1106: } elsif ($target eq 'edit') {
1107: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1108: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1109: $token,40);
1110: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1111: } elsif ($target eq 'modified') {
1112: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1113: $safeeval,'condition');
1114: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1115: }
1.160 albertel 1116: return $result;
1.4 tsai 1117: }
1118:
1119: sub end_while {
1.159 albertel 1120: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1121: my $result;
1122:
1123: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1124: $target eq 'tex' || $target eq 'analyze') {
1125: my $code = pop(@Apache::structuretags::whileconds);
1126: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1127: my $line = pop(@Apache::structuretags::whileline);
1128: my $return = &Apache::run::run($code,$safeeval);
1129: my $starttime=time;
1130: my $error=0;
1131: while ($return) {
1132: if (time-$starttime >
1133: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.270 albertel 1134: #$return = 0; $error=1; next;
1.161 albertel 1135: }
1136: $result.=&Apache::scripttag::xmlparse($bodytext);
1137: $return = &Apache::run::run($code,$safeeval);
1138: }
1139: if ($error) {
1.270 albertel 1140: &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 1141: }
1142: } elsif ($target eq "edit") {
1143: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1144: }
1.160 albertel 1145: return $result;
1.1 albertel 1146: }
1.6 tsai 1147:
1.160 albertel 1148: # <randomlist show="1">
1.6 tsai 1149: # <tag1>..</tag1>
1150: # <tag2>..</tag2>
1151: # <tag3>..</tag3>
1.160 albertel 1152: # ...
1.6 tsai 1153: # </randomlist>
1154: sub start_randomlist {
1.159 albertel 1155: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1156: my $result;
1157: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1158: $target eq 'tex' || $target eq 'analyze') {
1159: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1160: my $b_parser= HTML::LCParser->new(\$body);
1161: $b_parser->xml_mode(1);
1162: $b_parser->marked_sections(1);
1.159 albertel 1163: my $b_tok;
1164: my @randomlist;
1165: my $list_item;
1166: while($b_tok = $b_parser->get_token() ) {
1167: if($b_tok->[0] eq 'S') { # start tag
1168: # get content of the tag until matching end tag
1169: # get all text upto the matching tag
1170: # and push the content into @randomlist
1171: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1172: $b_parser);
1173: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1174: push(@randomlist,$list_item);
1175: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1176: # $list_item</b>";
1177: }
1178: if($b_tok->[0] eq 'T') { # text
1179: # what to do with text in between tags?
1180: # print "<b>TEXT $b_tok->[1]</b><br />";
1181: }
1182: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1183: # print "<b>END-TAG $b_tok->[1]</b><br />";
1184: # }
1185: }
1.303 albertel 1186: if (@randomlist) {
1187: my @idx_arr = (0 .. $#randomlist);
1188: &Apache::structuretags::shuffle(\@idx_arr);
1189: my $bodytext = '';
1190: my $show=$#randomlist;
1191: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1192: $showarg--;
1193: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1194: for(0 .. $show) {
1195: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1196: }
1197: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1198: }
1199: } elsif ($target eq 'edit' ) {
1200: $result .=&Apache::edit::tag_start($target,$token);
1201: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1202: $token,5);
1203: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1204: } elsif ($target eq 'modified' ) {
1205: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1206: $safeeval,'show');
1207: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1208: }
1209: return $result;
1.7 tsai 1210: }
1211:
1212: sub shuffle {
1213: my $a=shift;
1214: my $i;
1.303 albertel 1215: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1216: &Apache::response::pushrandomnumber();
1.159 albertel 1217: for($i=@$a;--$i;) {
1218: my $j=int(&Math::Random::random_uniform() * ($i+1));
1219: next if $i == $j;
1220: @$a[$i,$j] = @$a[$j,$i];
1221: }
1.251 albertel 1222: &Apache::response::poprandomnumber();
1.7 tsai 1223: }
1.6 tsai 1224: }
1225:
1226: sub end_randomlist {
1.159 albertel 1227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1228: my $result;
1229: if ($target eq 'edit' ) {
1230: $result=&Apache::edit::tag_end($target,$token,
1231: 'End Randomly Parsed Block');
1232: }
1233: return $result;
1.6 tsai 1234: }
1235:
1.283 albertel 1236: sub ordered_show_check {
1237: my $last_part=$Apache::inputtags::partlist[-2];
1238: my $in_order=
1239: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1240: my $in_order_show=1;
1241: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1242: $in_order_show=&Apache::response::check_status($last_part);
1243: }
1244: return $in_order_show;
1245: }
1246:
1.11 albertel 1247: sub start_part {
1.159 albertel 1248: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 1249: if (!$Apache::lonxml::metamode) {
1250: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1251: # duedates.
1252: }
1.159 albertel 1253: my $result='';
1254: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.296 albertel 1255: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
1.159 albertel 1256: $Apache::inputtags::part=$id;
1.177 albertel 1257: push(@Apache::inputtags::partlist,$id);
1258: @Apache::inputtags::response=();
1.159 albertel 1259: @Apache::inputtags::previous=();
1260: @Apache::inputtags::previous_version=();
1.241 albertel 1261: $Apache::lonhomework::problemstatus=&get_problem_status($id);
1.159 albertel 1262: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1263: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1264: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1265: my $in_order_show=&ordered_show_check();
1.214 albertel 1266: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1267: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1268: &Apache::run::run($expression,$safeeval);
1.159 albertel 1269:
1270: if ($target eq 'meta') {
1.224 www 1271: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1272: return &Apache::response::mandatory_part_meta.
1273: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1274: } elsif ($target eq 'web' || $target eq 'grade' ||
1275: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1276: if ($hidden || !$in_order_show) {
1.159 albertel 1277: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1278: } else {
1279: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1280: push (@Apache::inputtags::status,$status);
1281: my $expression='$external::datestatus="'.$status.'";';
1282: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1283: &Apache::run::run($expression,$safeeval);
1.284 albertel 1284: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1285: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1286: }
1.216 albertel 1287: if (( $status eq 'CLOSED' ) ||
1288: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1289: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1290: ( $status eq 'BANNED') ||
1291: ( $status eq 'UNAVAILABLE') ||
1292: ( $status eq 'INVALID_ACCESS')) {
1.159 albertel 1293: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
1294: if ( $target eq "web" ) {
1.211 albertel 1295: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1296: } elsif ( $target eq 'tex' ) {
1.284 albertel 1297: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1298: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1299: } else {
1.211 albertel 1300: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1301: }
1.159 albertel 1302: }
1303: } else {
1304: if ($target eq 'tex') {
1.284 albertel 1305: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1306: if ($$tagstack[-2] eq 'td') {
1307: $result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1308: } else {
1309: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1310: }
1.195 sakharuk 1311: }
1.159 albertel 1312: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1313: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1314: my @allkeys = split /,/,$allkeys;
1315: my $allow_print_points = 0;
1316: foreach my $partial_key (@allkeys) {
1.230 albertel 1317: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1318: if ($1 ne '0') {$allow_print_points=1;}
1319: }
1320: }
1.275 albertel 1321: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1322: if (defined($maxtries) && $maxtries < 0) {
1323: $allow_print_points=0;
1324: }
1.302 albertel 1325: if (lc($env{'course.'.$env{'request.course.id'}.
1326: '.disableexampointprint'}) eq 'yes') {
1327: $allow_print_points=0;
1328: }
1.222 sakharuk 1329: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1330: } elsif ($target eq 'web') {
1331: $result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
1.159 albertel 1332: }
1333: }
1334: }
1335: } elsif ($target eq 'edit') {
1336: $result.=&Apache::edit::tag_start($target,$token);
1337: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1338: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1339: ' '.
1340: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1341: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1342: } elsif ($target eq 'modified') {
1343: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1344: $safeeval,'id','display');
1.159 albertel 1345: if ($constructtag) {
1.225 albertel 1346: #limiting ids to only letters numbers, and space
1.224 www 1347: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1348: $result = &Apache::edit::rebuild_tag($token);
1349: $result.=&Apache::edit::handle_insert();
1350: }
1351: }
1352: return $result;
1.11 albertel 1353: }
1354:
1355: sub end_part {
1.159 albertel 1356: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1357: &Apache::lonxml::debug("in end_part $target ");
1358: my $status=$Apache::inputtags::status['-1'];
1359: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 1360: my $in_order_show=&ordered_show_check();
1.321 albertel 1361: my $result;
1362: if (!$Apache::lonxml::metamode) {
1363: $result = &Apache::lonxml::endredirection(); # started in &start_part
1364: }
1.312 albertel 1365: if ($target eq 'grade') {
1.249 albertel 1366: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 1367: !$hidden && $in_order_show) {
1.311 foxr 1368: $result.=&Apache::inputtags::grade;
1.249 albertel 1369: } else {
1370: # move any submission data to .hidden
1371: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1372: }
1.283 albertel 1373: } elsif (($target eq 'web' || $target eq 'tex') &&
1374: !$hidden && $in_order_show) {
1.159 albertel 1375: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1376: $target);
1.212 albertel 1377: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1378: $gradestatus='';
1379: }
1.311 foxr 1380: $result.=$gradestatus;
1.265 sakharuk 1381: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1382: } elsif ($target eq 'edit') {
1.311 foxr 1383: $result.=&Apache::edit::end_table();
1.322 albertel 1384: } elsif ($target eq 'modified') {
1385: $result .= $token->[2];
1386: $result.=&Apache::edit::handle_insertafter($token->[1]);
1.159 albertel 1387: }
1388: pop @Apache::inputtags::status;
1389: $Apache::inputtags::part='';
1.295 albertel 1390: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 1391: return $result;
1.11 albertel 1392: }
1.1 albertel 1393:
1.25 albertel 1394: sub start_preduedate {
1.159 albertel 1395: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1396: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.236 albertel 1397: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 1398: if (!$Apache::lonhomework::scantronmode &&
1399: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1400: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1401: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.159 albertel 1402: &Apache::lonxml::get_all_text("/preduedate",$parser);
1403: }
1.24 albertel 1404: }
1.159 albertel 1405: return '';
1.24 albertel 1406: }
1407:
1.25 albertel 1408: sub end_preduedate {
1.159 albertel 1409: return '';
1.24 albertel 1410: }
1411:
1.25 albertel 1412: sub start_postanswerdate {
1.159 albertel 1413: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.234 albertel 1414: if ($target eq 'web' || $target eq 'grade') {
1.300 albertel 1415: if ($Apache::lonhomework::scantronmode ||
1416: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.159 albertel 1417: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1418: }
1419: } elsif ($target eq 'tex') {
1.234 albertel 1420: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.159 albertel 1421: }
1422: return '';
1.24 albertel 1423: }
1424:
1.25 albertel 1425: sub end_postanswerdate {
1.159 albertel 1426: return '';
1.24 albertel 1427: }
1428:
1.25 albertel 1429: sub start_notsolved {
1.159 albertel 1430: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1431: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1432: $target eq 'tex') {
1433: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1434: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1435: if ($gradestatus =~ /^correct/ &&
1436: &Apache::response::show_answer()) {
1.159 albertel 1437: &Apache::lonxml::debug("skipping");
1438: &Apache::lonxml::get_all_text("/notsolved",$parser);
1439: }
1.24 albertel 1440: }
1.159 albertel 1441: return '';
1.24 albertel 1442: }
1443:
1.25 albertel 1444: sub end_notsolved {
1.159 albertel 1445: return '';
1.24 albertel 1446: }
1447:
1448: sub start_solved {
1.159 albertel 1449: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1450: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1451: $target eq 'tex') {
1452: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1453: if ($gradestatus !~ /^correct/ ||
1454: !&Apache::response::show_answer()) {
1.159 albertel 1455: &Apache::lonxml::get_all_text("/solved",$parser);
1456: }
1.24 albertel 1457: }
1.159 albertel 1458: return '';
1.24 albertel 1459: }
1460:
1461: sub end_solved {
1.248 albertel 1462: return '';
1463: }
1464:
1465: sub start_problemtype {
1466: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1467: my $result;
1468: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1469: $target eq 'tex' || $target eq 'analyze') {
1470: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1471: if (!defined($mode)) { $mode='show'; }
1472: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1473: my $found=0;
1474: foreach my $type (split(',',$for)) {
1475: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1476: }
1477: if ($mode eq 'show' && !$found) {
1478: &Apache::lonxml::get_all_text("/problemtype",$parser);
1479: }
1480: if ($mode eq 'hide' && $found) {
1481: &Apache::lonxml::get_all_text("/problemtype",$parser);
1482: }
1483: } elsif ($target eq 'edit') {
1484: $result .=&Apache::edit::tag_start($target,$token);
1485: $result.=&Apache::edit::select_arg('Mode:','mode',
1486: [['show','Show'],
1487: ['hide','Hide']]
1488: ,$token);
1489: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1490: [ ['exam','Exam/Quiz Problem'],
1491: ['survey','Survey'],
1492: ['problem','Homework Problem'] ]
1493: ,$token);
1494: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1495: } elsif ($target eq 'modified') {
1496: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1497: $safeeval,'mode','for');
1498: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1499: }
1500: return $result;
1501: }
1502:
1503: sub end_problemtype {
1.159 albertel 1504: return '';
1.24 albertel 1505: }
1.34 albertel 1506:
1507: sub start_startouttext {
1.159 albertel 1508: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1509: my @result=(''.'');
1510: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1511: return (@result);
1.34 albertel 1512: }
1.159 albertel 1513:
1.34 albertel 1514: sub end_startouttext {
1.159 albertel 1515: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1516: my $result='';
1517: my $text='';
1518:
1519: if ($target eq 'edit') {
1520: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.211 albertel 1521: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1522: <td>".&mt('Delete:').
1.159 albertel 1523: &Apache::edit::deletelist($target,$token)
1524: ."</td>
1.42 albertel 1525: <td>".
1.159 albertel 1526: &Apache::edit::insertlist($target,$token).
1527: &Apache::edit::end_row().
1528: &Apache::edit::start_spanning_row()."\n"
1.188 bowersj2 1529: . &Apache::loncommon::helpLatexCheatsheet () .
1.255 www 1530: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1531: }
1532: if ($target eq 'modified') {
1.219 albertel 1533: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1534: }
1535: if ($target eq 'tex') {
1536: $result .= '\noindent ';
1537: }
1538: return $result;
1.34 albertel 1539: }
1.159 albertel 1540:
1.34 albertel 1541: sub start_endouttext {
1.159 albertel 1542: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1543: my $result='';
1544: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1545: if ($target eq "modified") {
1546: $result='<endouttext />'.
1547: &Apache::edit::handle_insertafter('startouttext'); }
1548: return $result;
1.34 albertel 1549: }
1.159 albertel 1550:
1.34 albertel 1551: sub end_endouttext {
1.159 albertel 1552: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1553: my @result=('','');
1554: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1555: return (@result);
1.34 albertel 1556: }
1.159 albertel 1557:
1.45 albertel 1558: sub delete_startouttext {
1.159 albertel 1559: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1560: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1561: my $text=$$parser['-1']->get_text("/endouttext");
1562: my $ntoken=$$parser['-1']->get_token();
1563: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1564: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1565: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1566: # they did the last time round
1567: &Apache::lonxml::increasedepth($ntoken);
1568: &Apache::lonxml::decreasedepth($ntoken);
1569: return 1;
1.193 www 1570: }
1571:
1572: sub start_simpleeditbutton {
1573: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1574: my $result='';
1.284 albertel 1575: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 1576: ($target eq 'web') &&
1.284 albertel 1577: (&Apache::lonnet::allowed('srm',$env{'request.course.id'}))) {
1578: my $url=$env{'request.noversionuri'};
1.193 www 1579: $url=~s/\?.*$//;
1.278 albertel 1580: my ($symb) = &Apache::lonxml::whichuser();
1.194 www 1581: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.278 albertel 1582: '<a href="'.$url.'/smpedit?symb='.&Apache::lonnet::escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
1.196 www 1583: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1584: }
1585: return $result;
1586: }
1587:
1588: sub end_simpleeditbutton {
1589: return '';
1.45 albertel 1590: }
1.34 albertel 1591:
1.1 albertel 1592: 1;
1593: __END__
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