Annotation of loncom/homework/structuretags.pm, revision 1.497.2.2
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.497.2.2! foxr 4: # $Id: structuretags.pm,v 1.497.2.1 2011/12/12 11:19:53 foxr 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:
1.435 jms 30: =pod
31:
32: =head1 NAME
33:
34: Apache::structuretags
35:
36: =head1 SYNOPSIS
37:
38:
39: This is part of the LearningOnline Network with CAPA project
40: described at http://www.lon-capa.org.
41:
42:
43: =head1 NOTABLE SUBROUTINES
44:
45: =over
46:
47: =item
48:
49: =back
50:
51: =cut
52:
1.133 sakharuk 53:
1.1 albertel 54: package Apache::structuretags;
55:
56: use strict;
57: use Apache::lonnet;
1.101 sakharuk 58: use Apache::File();
1.147 www 59: use Apache::lonmenu;
1.210 albertel 60: use Apache::lonlocal;
1.231 sakharuk 61: use Apache::lonxml;
1.434 foxr 62: use Apache::londefdef;
1.338 albertel 63: use Apache::lonenc();
1.267 albertel 64: use Time::HiRes qw( gettimeofday tv_interval );
1.356 www 65: use lib '/home/httpd/lib/perl/';
66: use LONCAPA;
67:
1.78 harris41 68: BEGIN {
1.469 www 69: &Apache::lonxml::register('Apache::structuretags',('block','languageblock','translated','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startpartmarker','startouttext','endpartmarker','endouttext','simpleeditbutton','definetag'));
1.10 albertel 70: }
71:
72: sub start_web {
1.326 albertel 73: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383 albertel 74: if ($target ne 'edit' && $target ne 'modified') {
75: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
76: if ($target eq 'web' || $target eq 'webgrade') {
77: return $bodytext;
78: }
79: } elsif ($target eq "edit" ) {
80: my $bodytext =
81: &Apache::lonxml::get_all_text_unbalanced("/web",$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 $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159 albertel 87: }
88: return '';
1.10 albertel 89: }
90:
91: sub end_web {
1.44 ng 92: return '';
1.10 albertel 93: }
94:
95: sub start_tex {
1.326 albertel 96: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198 sakharuk 97: my $result='';
1.383 albertel 98: if ($target ne 'edit' && $target ne 'modified') {
99: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
100: if ($target eq 'tex') {
1.434 foxr 101:
102: # If inside a table, occurrences of \\ must be removed;
103: # else the table blows up.
104:
105: if (&Apache::londefdef::is_inside_of($tagstack, "table")) {
106: $bodytext =~ s/\\\\//g;
107: }
1.432 foxr 108: return $bodytext.'{}';
1.383 albertel 109: }
110: } elsif ($target eq "edit" ) {
111: my $bodytext =
112: &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
113: my $result = &Apache::edit::tag_start($target,$token);
114: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
115: return $result;
116: } elsif ( $target eq "modified" ) {
117: return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159 albertel 118: }
1.198 sakharuk 119: return $result;;
1.10 albertel 120: }
121:
122: sub end_tex {
1.44 ng 123: return '';
1.9 albertel 124: }
125:
1.400 albertel 126: sub homework_js {
127: return &Apache::loncommon::resize_textarea_js().
1.416 raeburn 128: &setmode_javascript().
1.400 albertel 129: <<'JS';
130: <script type="text/javascript">
1.483 raeburn 131: // <![CDATA[
1.494 raeburn 132: function setSubmittedPart (part,prefix) {
133: if (typeof(prefix) == 'undefined') {
134: this.document.lonhomework.submitted.value="part_"+part;
135: } else {
136: for (var i=0;i<this.document.lonhomework.elements.length;i++) {
137: if (this.document.lonhomework.elements[i].name == prefix+'submitted') {
138: this.document.lonhomework.elements[i].value="part_"+part;
139: }
140: }
141: }
1.400 albertel 142: }
143:
144: function image_response_click (which, e) {
145: init_geometry();
146: if (!e) { e = window.event; } //IE
147: var input_element = document.lonhomework.elements[which];
1.401 albertel 148: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 149: var token = token_element.value;
1.401 albertel 150: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 151: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
152: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
153: var click = x+':'+y;
154: input_element.value = click;
1.485 raeburn 155: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
1.400 albertel 156: }
1.483 raeburn 157: // ]]>
1.400 albertel 158: </script>
159: JS
160: }
161:
1.416 raeburn 162: sub setmode_javascript {
163: return <<"ENDSCRIPT";
164: <script type="text/javascript">
1.485 raeburn 165: // <![CDATA[
1.416 raeburn 166: function setmode(form,probmode) {
167: form.problemmode.value = probmode;
168: form.submit();
169: }
1.485 raeburn 170: // ]]>
1.416 raeburn 171: </script>
172: ENDSCRIPT
173: }
174:
1.48 albertel 175: sub page_start {
1.345 albertel 176: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
177: $extra_head)=@_;
1.159 albertel 178: my %found;
1.207 albertel 179: foreach my $taginside (@$tagstack) {
1.159 albertel 180: foreach my $taglookedfor ('html','body','form') {
181: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
182: }
183: }
184:
1.343 albertel 185: if ($target eq 'tex') {
186: return
187: &Apache::londefdef::start_html($target,$token,$tagstack,
188: $parstack,$parser,$safeeval);
189: }
190:
1.474 raeburn 191: $extra_head .= &homework_js().
192: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
193: if (&Apache::lonhtmlcommon::htmlareabrowser()) {
194: my %textarea_args = (
195: dragmath => 'math',
196: );
197: $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
1.425 raeburn 198: }
1.478 raeburn 199: my $is_task = ($env{'request.uri'} =~ /\.task$/);
1.493 raeburn 200: my $needs_upload;
1.495 raeburn 201: my ($symb)= &Apache::lonnet::whichuser();
202: my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
1.478 raeburn 203: if ($is_task) {
1.495 raeburn 204: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
1.493 raeburn 205: } else {
206: if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.uploadedfiletypes") ne '') {
1.495 raeburn 207: unless ($env{'request.state'} eq 'construct') {
208: my $navmap = Apache::lonnavmaps::navmap->new();
209: if (ref($navmap)) {
210: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 211: my $is_page;
212: if (ref($mapres)) {
213: $is_page = $mapres->is_page();
214: }
215: unless ($is_page) {
1.495 raeburn 216: $needs_upload = 1;
217: }
218: }
219: }
1.493 raeburn 220: } else {
221: unless ($env{'request.state'} eq 'construct') {
222: my $navmap = Apache::lonnavmaps::navmap->new();
223: if (ref($navmap)) {
1.495 raeburn 224: my $mapres = $navmap->getResourceByUrl($map);
1.496 raeburn 225: my $is_page;
226: if (ref($mapres)) {
227: $is_page = $mapres->is_page();
228: }
229: unless ($is_page) {
1.495 raeburn 230: my $res = $navmap->getBySymb($symb);
231: if (ref($res)) {
232: my $partlist = $res->parts();
233: if (ref($partlist) eq 'ARRAY') {
234: foreach my $part (@{$partlist}) {
235: my @types = $res->responseType($part);
236: my @ids = $res->responseIds($part);
237: for (my $i=0; $i < scalar(@ids); $i++) {
238: if ($types[$i] eq 'essay') {
239: my $partid = $part.'_'.$ids[$i];
240: if (&Apache::lonnet::EXT("resource.$partid.uploadedfiletypes") ne '') {
241: $needs_upload = 1;
242: last;
243: }
1.493 raeburn 244: }
245: }
246: }
1.495 raeburn 247: }
248: }
1.493 raeburn 249: }
250: }
251: }
252: }
1.495 raeburn 253: if ($needs_upload) {
254: $extra_head .= &Apache::lonhtmlcommon::file_submissionchk_js();
255: }
1.478 raeburn 256: }
1.425 raeburn 257:
1.344 albertel 258: my %body_args;
259: if (defined($found{'html'})) {
260: $body_args{'skip_phases'}{'head'}=1;
261: } else {
1.343 albertel 262:
1.345 albertel 263: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 264:
1.379 albertel 265: $extra_head .= &Apache::londefdef::generate_css_links();
266:
1.384 albertel 267: if ($env{'request.state'} eq 'construct') {
1.343 albertel 268: $extra_head.=&Apache::edit::js_change_detection().
269: "<script type=\"text/javascript\">\n".
270: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
271: &Apache::loncommon::browser_and_searcher_javascript().
272: "\n</script>\n";
273: }
1.159 albertel 274: }
1.343 albertel 275:
1.446 bisitz 276: my $pageheader = '';
1.344 albertel 277: if (defined($found{'body'})) {
278: $body_args{'skip_phases'}{'body'}=1;
279: } elsif (!defined($found{'body'})
280: && $env{'request.state'} eq 'construct') {
1.343 albertel 281: if ($target eq 'web' || $target eq 'edit') {
1.450 bisitz 282: # Breadcrumbs for Construction Space
283: &Apache::lonhtmlcommon::clear_breadcrumbs();
284: &Apache::lonhtmlcommon::add_breadcrumb({
285: 'text' => 'Construction Space',
1.497 raeburn 286: 'href' => &Apache::loncommon::authorspace($env{'request.uri'}),
1.450 bisitz 287: });
1.460 droeschl 288: # breadcrumbs (and tools) will be created
289: # in start_page->bodytag->innerregister
290:
1.450 bisitz 291: # FIXME Where are we?
292: # &Apache::lonhtmlcommon::add_breadcrumb({
293: # 'text' => 'Problem Editing', # 'Problem Testing'
294: # 'href' => '',
295: # });
1.460 droeschl 296: $pageheader =&Apache::loncommon::head_subbox(
1.446 bisitz 297: &Apache::loncommon::CSTR_pageheader());
1.297 albertel 298: }
1.272 albertel 299: } elsif (!defined($found{'body'})) {
1.343 albertel 300: my %add_entries;
1.159 albertel 301: my $background=&Apache::lonxml::get_param('background',$parstack,
302: $safeeval);
1.343 albertel 303: if ($background ne '' ) {
304: $add_entries{'background'} = $background;
305: }
1.344 albertel 306:
1.290 albertel 307: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
308: $safeeval);
1.446 bisitz 309: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
1.344 albertel 310:
1.446 bisitz 311: $body_args{'bgcolor'} = $bgcolor;
312: # $body_args{'no_title'} = 1;
313: $body_args{'force_register'} = 1;
314: $body_args{'add_entries'} = \%add_entries;
1.466 droeschl 315: if ( $env{'request.state'} eq 'construct') {
1.446 bisitz 316: $body_args{'only_body'} = 1;
317: }
1.344 albertel 318: }
1.365 albertel 319: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 320: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
321: \%body_args);
1.446 bisitz 322: $page_start .= $pageheader;
1.462 raeburn 323: if (!defined($found{'body'})
324: && $env{'request.state'} ne 'construct'
325: && ($target eq 'web' || $target eq 'webgrade')) {
326:
327: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
328: if ($symb eq '' && !$publicuser) {
329: $page_start .= '<p class="LC_info">'
330: .&mt('Browsing resource, all submissions are temporary.')
331: .'</p>';
1.457 bisitz 332: }
1.344 albertel 333: }
334:
1.409 albertel 335: if (!defined($found{'body'}) && $env{'request.state'} ne 'construct') {
1.343 albertel 336: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 337: }
338: my $form_tag_start;
339: if (!defined($found{'form'})) {
1.337 albertel 340: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.465 raeburn 341: my $uri = &Apache::loncommon::inhibit_menu_check(
1.455 droeschl 342: &Apache::lonenc::check_encrypt($env{'request.uri'}));
1.464 raeburn 343: $uri = &HTML::Entities::encode($uri,'<>&"');
1.327 albertel 344: $form_tag_start.=$uri.'" ';
345: if ($target eq 'edit') {
346: $form_tag_start.=&Apache::edit::form_change_detection();
347: }
1.493 raeburn 348: my ($symb,$courseid,$udom,$uname)=&Apache::lonnet::whichuser();
349: my ($path,$multiresp) =
350: &Apache::loncommon::get_turnedin_filepath($symb,$uname,$udom);
1.495 raeburn 351: if (($is_task) || ($needs_upload)) {
352: $form_tag_start .= ' onsubmit="return file_submission_check(this,'."'$path','$multiresp'".');"';
1.478 raeburn 353: }
1.368 albertel 354: $form_tag_start.='>'."\n";
1.355 albertel 355:
356: my $symb=&Apache::lonnet::symbread();
357: if ($symb =~ /\S/) {
358: $symb=
359: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
360: $form_tag_start.=
1.368 albertel 361: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 362: }
1.159 albertel 363: }
1.343 albertel 364: return ($page_start,$form_tag_start);
1.105 albertel 365: }
366:
1.141 matthew 367: #use Time::HiRes();
1.105 albertel 368: sub get_resource_name {
1.159 albertel 369: my ($parstack,$safeeval)=@_;
1.388 foxr 370: my $name;
1.204 albertel 371: if (defined($Apache::lonhomework::name)) {
1.388 foxr 372: $name = $Apache::lonhomework::name;
373: } else {
374: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 375: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 376: if ($name eq '') {
377: $name=&Apache::lonnet::EXT('resource.title');
378: if ($name eq 'con_lost') { $name = ''; }
379: }
380: if ($name!~/\S+/) {
381: $name=$env{'request.uri'};
382: $name=~s-.*/([^/]+)$-$1-;
383: }
384: # The name has had html tags escaped:
385:
386: $name=~s/</</gs;
387: $name=~s/>/>/gs;
388:
389: $Apache::lonhomework::name=$name;
1.204 albertel 390: }
1.159 albertel 391: return $name;
1.105 albertel 392: }
393:
394: sub setup_rndseed {
1.479 raeburn 395: my ($safeeval,$target)=@_;
1.367 albertel 396: my ($symb)=&Apache::lonnet::whichuser();
1.479 raeburn 397: my ($questiontype,$set_safespace,$rndseed);
398: if ($target eq 'analyze') {
399: $questiontype = $env{'form.grade_questiontype'};
400: }
401: unless (defined($questiontype)) {
402: $questiontype = $Apache::lonhomework::type;
403: }
1.333 albertel 404: if ($env{'request.state'} eq "construct"
405: || $symb eq ''
406: || $Apache::lonhomework::type eq 'practice'
407: || $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 408: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 409: ['rndseed']);
1.284 albertel 410: $rndseed=$env{'form.rndseed'};
1.159 albertel 411: if (!$rndseed) {
1.162 albertel 412: $rndseed=$Apache::lonhomework::history{'rndseed'};
413: if (!$rndseed) {
414: $rndseed=time;
415: }
1.284 albertel 416: $env{'form.rndseed'}=$rndseed;
1.162 albertel 417: }
1.479 raeburn 418: if (($env{'request.state'} eq "construct") &&
419: ($Apache::lonhomework::type eq 'randomizetry')) {
420: my $tries = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.tries"};
421: if ($tries) {
422: $rndseed += $tries;
423: }
1.480 raeburn 424: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.479 raeburn 425: }
1.374 albertel 426: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
427: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 428: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 429: srand(time);
430: $rndseed=int(rand(2100000000));
1.284 albertel 431: $env{'form.rndseed'}=$rndseed;
432: delete($env{'form.resetdata'});
433: delete($env{'form.newrandomization'});
1.159 albertel 434: }
1.488 www 435: $rndseed=~s/\,/\:/g;
436: $rndseed=~s/[^\w\d\:\-]//g;
1.489 www 437: if (defined($rndseed)) {
438: my ($c1,$c2)=split(/\:/,$rndseed);
439: unless ($c2) { $c2=0; }
440: unless (($c1==int($c1)) && ($c2==int($c2))) {
441: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
442: }
1.187 albertel 443: }
1.247 albertel 444: if ($Apache::lonhomework::history{'resource.CODE'}) {
445: $rndseed=&Apache::lonnet::rndseed();
446: }
1.479 raeburn 447: $set_safespace = 1;
448: } elsif ($questiontype eq 'randomizetry') {
449: if ($target eq 'analyze') {
450: if (defined($env{'form.grade_rndseed'})) {
451: $rndseed = $env{'form.grade_rndseed'};
452: }
453: }
454: unless (($target eq 'analyze') && (defined($rndseed))) {
455: $rndseed=&Apache::lonnet::rndseed();
456: my $curr_try = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.tries"};
457: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
458: $curr_try ++;
459: }
460: if ($rndseed =~/^(\d+)[,:](\d+)$/) {
461: $rndseed = $1;
462: }
463: if ($curr_try) {
464: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
465: if (($reqtries =~ /^\d+$/) && ($reqtries > 1)) {
466: my $inc = int(($curr_try-1)/$reqtries);
467: $rndseed += $inc;
468: } else {
469: $rndseed += $curr_try;
470: }
471: }
472: }
473: $set_safespace = 1;
474: }
475: if ($set_safespace) {
476: if ($safeeval) {
477: &Apache::lonxml::debug("Setting rndseed to $rndseed");
478: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
479: }
480: }
481: unless (($env{'request.state'} eq "construct") || ($symb eq '')) {
482: $env{'form.'.$Apache::inputtags::part.'.rndseed'}=$rndseed;
1.159 albertel 483: }
484: return $rndseed;
1.105 albertel 485: }
486:
1.268 albertel 487: sub remember_problem_state {
488: return '
1.284 albertel 489: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
490: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
491: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 492: }
493:
1.487 www 494: sub problem_edit_action_button {
495: my ($name,$action,$accesskey,$text,$flag)=@_;
496: my $actionscript="setmode(this.form,'$action')";
497: return "\n<input type='button' name='$name' accesskey='$accesskey' value='".&mt($text)."'".
498: ($flag?&Apache::edit::submit_ask_anyway($actionscript):&Apache::edit::submit_dont_ask($actionscript))." />";
499: }
500:
1.423 www 501: sub problem_edit_buttons {
1.487 www 502: my ($mode)=@_;
503: # Buttons that do not save
504: my $result='<div class="LC_edit_problem_discards">'.
505: &problem_edit_action_button('subdiscview','discard','d','Discard Edits and View',1);
506: if ($mode eq 'editxml') {
507: $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
508: $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
509: $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
510: } else {
511: $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
512: $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
513: }
514: $result.="\n</div>";
515: # Buttons that save
516: $result.='<div class="LC_edit_problem_saves">';
517: if ($mode eq 'editxml') {
518: $result.=&problem_edit_action_button('subsaveedit','saveeditxml','s','Save and EditXML');
519: $result.=&problem_edit_action_button('subsaveview','saveviewxml','v','Save and View');
520: } else {
521: $result.=&problem_edit_action_button('subsaveedit','saveedit','s','Save and Edit');
522: $result.=&problem_edit_action_button('subsaveview','saveview','v','Save and View');
523: }
524: $result.="\n</div>\n";
525: return $result;
1.423 www 526: }
527:
528: sub problem_edit_header {
1.487 www 529: return '<input type="hidden" name="submitted" value="edit" />'.
530: &remember_problem_state('edit').'
1.423 www 531: <div class="LC_edit_problem_header">
532: <div class="LC_edit_problem_header_title">
533: '.&mt('Problem Editing').&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
534: </div>'.
1.487 www 535: '<input type="hidden" name="problemmode" value="saveedit" />'.
1.423 www 536: &problem_edit_buttons().'
1.459 bisitz 537: <hr style="clear:both;" />
1.409 albertel 538: '.&Apache::lonxml::message_location().'
1.408 albertel 539: </div>
540: '.
1.458 bisitz 541: '<table border="0" width="100%"><tr><td bgcolor="#F8F8F8">';
1.105 albertel 542: }
543:
544: sub problem_edit_footer {
1.412 albertel 545: return '</td></tr></table><br />
546: <div class="LC_edit_problem_footer">
1.453 bisitz 547: <hr />'.
1.423 www 548: &problem_edit_buttons().'
1.459 bisitz 549: <hr style="clear:both;" />
1.412 albertel 550: </div>
551: '.
1.342 albertel 552: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 553: }
554:
1.235 albertel 555: sub option {
556: my ($value,$name) = @_;
557: my $result ="<option value='".$value."' ";
1.284 albertel 558: if ($env{'form.'.$name} eq $value) {
1.235 albertel 559: $result.=" selected='on' ";
560: }
561: $result.='>';
562: return $result;
563: }
564:
1.105 albertel 565: sub problem_web_to_edit_header {
1.159 albertel 566: my ($rndseed)=@_;
1.406 albertel 567: my $result .= '<div class="LC_edit_problem_header">';
568:
569: if (!$Apache::lonhomework::parsing_a_task) {
570: $result .=
571: '<div class="LC_edit_problem_header_title">'.
572: &mt('Problem Testing').
573: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area').
574: '</div>';
575: } else {
576: $result .=
577: '<div class="LC_edit_problem_header_title">'.
578: &mt('Task Testing').
579: '</div>';
580: }
581:
1.315 albertel 582: my $show_all_foils_text =
583: ($Apache::lonhomework::parsing_a_task) ?
1.452 bisitz 584: &mt('Show All Instances')
585: : &mt('Show All Foils');
1.315 albertel 586:
1.452 bisitz 587: my $show_all= '<span class="LC_nobreak"><label for="showallfoils">'
588: .'<input type="checkbox" name="showallfoils"';
1.440 bisitz 589: if (defined($env{'form.showallfoils'})) { $show_all.=' checked="checked"'; }
1.452 bisitz 590: $show_all.= ' /> '.$show_all_foils_text
591: .'</label></span>';
1.406 albertel 592:
593:
1.384 albertel 594:
1.406 albertel 595: $result .= '<div class="LC_edit_problem_header_status_row">';
1.313 albertel 596: if (!$Apache::lonhomework::parsing_a_task) {
597: $result.="
1.406 albertel 598: <div class='LC_edit_problem_header_row1'>
599: <span class=\"LC_nobreak\">
1.405 albertel 600: ".&mt("Problem Status:")."
1.235 albertel 601: <select name='problemstate'>
1.270 albertel 602: <option value=''></option>
1.235 albertel 603: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
604: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
605: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
606: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
607: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
608: </select>
1.406 albertel 609: </span>
610: <span class=\"LC_nobreak\">
1.405 albertel 611: ".&mt("Problem Type:")."
1.235 albertel 612: <select name='problemtype'>
1.270 albertel 613: <option value=''></option>
1.242 albertel 614: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
1.428 raeburn 615: ".&option('problem','problemtype').&mt("Homework Problem")."</option>
1.242 albertel 616: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.465 raeburn 617: ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
618: ".&option('anonsurvey' ,'problemtype').&mt("Anonymous Survey Question")."</option>
619: ".&option('anonsurveycred' ,'problemtype').&mt("Anonymous Survey Question (with credit)")."</option>
1.428 raeburn 620: ".&option('practice' ,'problemtype').&mt("Practice Problem")."</option>
1.479 raeburn 621: ".&option('randomizetry' ,'problemtype').&mt("New Randomization Each Try")."</option>
1.235 albertel 622: </select>
1.406 albertel 623: </span>
624: $show_all
625: </div>
626: <div class='LC_edit_problem_header_row2'>
627: <span class=\"LC_nobreak\">
1.405 albertel 628: ".&mt("Feedback Mode:")."
1.235 albertel 629: <select name='problemstatus'>
630: <option value=''></option>
1.242 albertel 631: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.405 albertel 632: ".&option('no', 'problemstatus').&mt("Don't Show Incorect/Correct Feedback")."</option>
633: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 634: </select>
1.406 albertel 635: </span>
636: ";
637:
1.376 albertel 638: } elsif ($Apache::lonhomework::parsing_a_task) {
639: $result.="
1.406 albertel 640: <div class='LC_edit_problem_header_row1'>
641: <span class=\"LC_nobreak\">
1.405 albertel 642: ".&mt("Problem Status:")."
1.376 albertel 643: <select name='problemstate'>
644: <option value=''></option>
645: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
646: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
647: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
648: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
649: </select>
1.406 albertel 650: </span>
651: $show_all
652: ";
653: }
654: $result.='
655: <span class="LC_nobreak">
656: '.&mt('Apply style file: ').'
657: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
658: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
659: </span>
1.422 www 660: </div>
661: <div class="LC_edit_problem_header_row1">'.
662: &Apache::lonxml::renderingoptions().'
1.406 albertel 663: </div>
664: <input type="submit" name="changeproblemmode" value="'.&mt("Change View").'" />
665: <input type="submit" name="clear_style_file" accesskey="d" value="'.&mt('Show Default View').'" />
666: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
667: </div>
1.453 bisitz 668: <hr />
1.406 albertel 669: <div class="LC_edit_problem_header_randomize_row">
670: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
671: <input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.488 www 672: <input type="text" name="rndseed" size="24" value="'.
1.406 albertel 673: $rndseed.'"
674: onchange="javascript:document.lonhomework.changerandseed.click()" />';
675:
676: if (!$Apache::lonhomework::parsing_a_task) {
677: my $numtoanalyze=$env{'form.numtoanalyze'};
678: if (!$numtoanalyze) { $numtoanalyze=20; }
1.408 albertel 679: $result .= '<span class="LC_nobreak">'.
680: &mt('[_1] for [_2] versions.',
1.416 raeburn 681: '<input type="button" name="submitmode" value="'.&mt('Calculate answers').'" '.
1.419 bisitz 682: 'onclick="javascript:setmode(this.form,'."'calcanswers'".')" />'
683: ,'<input type="text" name="numtoanalyze" value="'.
1.408 albertel 684: $numtoanalyze.'" size="5" />').
685: &Apache::loncommon::help_open_topic("Analyze_Problem",'',undef,undef,300).
686: '</span>';
687:
1.313 albertel 688: }
1.406 albertel 689:
690: $result.='
691: </div>
1.453 bisitz 692: <hr />
1.447 bisitz 693: <div>';
1.416 raeburn 694: $result.='<input type="hidden" name="problemmode" value="view" />';
695: $result .= '<input type="button" name="submitmode" accesskey="e" value="'.&mt('Edit').'" '.
696: 'onclick="javascript:setmode(this.form,'."'edit'".')" />';
697: $result .= '<input type="button" name="submitmode" accesskey="x" value="'.&mt('EditXML').'" '.
698: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />';
1.408 albertel 699: $result.='
700: </div>
1.453 bisitz 701: <hr />
1.409 albertel 702: '.&Apache::lonxml::message_location().'
1.406 albertel 703: </div>';
1.159 albertel 704: return $result;
1.48 albertel 705: }
706:
1.65 albertel 707: sub initialize_storage {
1.357 albertel 708: my ($given_symb) = @_;
1.353 albertel 709: undef(%Apache::lonhomework::results);
710: undef(%Apache::lonhomework::history);
1.357 albertel 711: my ($symb,$courseid,$domain,$name) =
1.367 albertel 712: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 713:
714: # anonymous users (CODEd exams) have no data
715: if ($name eq 'anonymous'
716: && !defined($domain)) {
717: return;
718: }
719:
1.333 albertel 720: if ($env{'request.state'} eq 'construct'
721: || $symb eq ''
722: || $Apache::lonhomework::type eq 'practice') {
723:
724: my $namespace = $symb || $env{'request.uri'};
725: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 726: ($env{'form.resetdata'} eq &mt('New Problem Variation')
727: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 728: $env{'form.newrandomization'} eq &mt('New Randomization')) {
729: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
730: &Apache::lonxml::debug("Attempt reset");
731: }
1.159 albertel 732: %Apache::lonhomework::history=
1.333 albertel 733: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 734: my ($temp)=keys %Apache::lonhomework::history ;
735: &Apache::lonxml::debug("Return message of $temp");
736: } else {
737: %Apache::lonhomework::history=
738: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
739: }
1.353 albertel 740:
1.159 albertel 741: #ignore error conditions
1.67 albertel 742: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 743: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 744: }
745:
1.435 jms 746: =pod
747:
748: =item finalize_storage()
749:
750: Stores away the result has to a student's environment
751: checks form.grade_ for specific values, other wises stores
752: to the running users environment
753: Will increment totals for attempts, students, and corrects
754: if running user has student role.
755:
756: =cut
757:
758:
1.65 albertel 759: sub finalize_storage {
1.357 albertel 760: my ($given_symb) = @_;
1.159 albertel 761: my $result;
1.289 albertel 762: if (%Apache::lonhomework::results) {
1.323 albertel 763: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
764: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 765: my ($symb,$courseid,$domain,$name) =
1.367 albertel 766: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 767: if ($env{'request.state'} eq 'construct'
768: || $symb eq ''
769: || $Apache::lonhomework::type eq 'practice') {
770: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 771: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 772: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 773: $namespace,'',$domain,$name);
1.159 albertel 774: &Apache::lonxml::debug('Construct Store return message:'.$result);
775: } else {
776: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
777: $symb,$courseid,$domain,$name);
778: &Apache::lonxml::debug('Store return message:'.$result);
1.470 raeburn 779: &store_aggregates($symb,$courseid);
1.159 albertel 780: }
1.323 albertel 781: } else {
782: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 783: }
1.159 albertel 784: return $result;
1.65 albertel 785: }
786:
1.435 jms 787: =pod
788:
789: item store_aggregates()
790:
791: Sends hash of values to be incremented in nohist_resourcetracker.db
792: for the course. Increments total number of attempts, unique students
793: and corrects for each part for an instance of a problem, as appropriate.
794:
795: =cut
796:
1.285 raeburn 797: sub store_aggregates {
798: my ($symb,$courseid) = @_;
1.479 raeburn 799: my (%aggregate,%anoncounter,%randtrycounter);
1.286 albertel 800: my @parts;
1.288 albertel 801: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
802: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 803: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 804: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 805: push(@parts, $1);
1.285 raeburn 806: }
807: }
1.286 albertel 808: foreach my $part (@parts) {
1.470 raeburn 809: if ($env{'request.role'} =~/^st/) {
810: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
811: eq 'APPROX_ANS' ||
812: $Apache::lonhomework::results{'resource.'.$part.'.award'}
813: eq 'EXACT_ANS') {
814: $aggregate{$symb."\0".$part."\0correct"} = 1;
815: }
816: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
817: $aggregate{$symb."\0".$part."\0users"} = 1;
818: } else {
819: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
820: if ($last_reset) {
821: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
822: $aggregate{$symb."\0".$part."\0users"} = 1;
823: }
824: }
825: }
826: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 827: }
1.470 raeburn 828: if (($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurvey') ||
1.479 raeburn 829: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'anonsurveycred') ||
830: ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry')) {
831: if ($Apache::lonhomework::results{'resource.'.$part.'.type'} eq 'randomizetry') {
832: $randtrycounter{$symb."\0".$part} = 1;
833: } else {
834: $anoncounter{$symb."\0".$part} = 1;
835: }
1.470 raeburn 836: my $needsrelease = $Apache::lonnet::needsrelease{'parameter:type:'.$Apache::lonhomework::results{'resource.'.$part.'.type'}};
837: if ($needsrelease) {
838: my $curr_required = $env{'course.'.$env{'request.course.id'}.'.internal.releaserequired'};
839: if ($curr_required eq '') {
1.471 raeburn 840: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 841: } else {
842: my ($currmajor,$currminor) = split(/\./,$curr_required);
843: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
844: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
1.471 raeburn 845: &Apache::lonnet::update_released_required($needsrelease);
1.470 raeburn 846: }
1.292 raeburn 847: }
848: }
1.285 raeburn 849: }
850: }
1.292 raeburn 851: if (keys (%aggregate) > 0) {
1.289 albertel 852: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 853: $cdomain,$cname);
854: }
1.472 raeburn 855: if (keys(%anoncounter) > 0) {
1.481 raeburn 856: &Apache::lonnet::cput('nohist_anonsurveys',\%anoncounter,
857: $cdomain,$cname);
1.472 raeburn 858: }
1.479 raeburn 859: if (keys(%randtrycounter) > 0) {
1.481 raeburn 860: &Apache::lonnet::cput('nohist_randomizetry',\%randtrycounter,
861: $cdomain,$cname);
1.479 raeburn 862: }
1.292 raeburn 863: }
1.289 albertel 864:
1.65 albertel 865: sub checkout_msg {
1.211 albertel 866: my %lt=&Apache::lonlocal::texthash(
867: 'resource'=>'The resource needs to be checked out',
868: '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.',
869: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
870: 'checkout'=>'Check out Exam for Viewing',
871: 'checkout?'=>'Check out Exam?');
1.352 albertel 872: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 873: return (<<ENDCHECKOUT);
1.211 albertel 874: <h2>$lt{'resource'}</h2>
875: <p>$lt{'id_expln'}</p>
1.449 bisitz 876: <p class="LC_warning">$lt{'warning'}</p>
1.444 bisitz 877: <form name="checkout" method="post" action="$uri">
1.91 albertel 878: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 879: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 880: </form>
881: ENDCHECKOUT
882: }
883:
1.252 albertel 884: sub firstaccess_msg {
1.253 albertel 885: my ($time,$symb)=@_;
1.414 albertel 886: my $result;
887: my @interval=&Apache::lonnet::EXT("resource.0.interval");
888: if ($interval[1] eq 'map') {
889: my ($map)=&Apache::lonnet::decode_symb($symb);
890: my $foldertitle=&Apache::lonnet::gettitle($map);
891:
892: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.418 bisitz 893: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.'
894: .' Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
895: ,$foldertitle,$time)."</h2>";
1.414 albertel 896: } elsif ($interval[1] eq 'course') {
897: my $course = $env{'course.'.$env{'request.course.id'}.'.description'};
1.418 bisitz 898: $result .= "<h2>".&mt('The resources in "[_1]" are open for a limited time.'
899: .' Once you click the "Show Resource" button below you have [_2] to complete all resources "[_1]".'
900: ,$course,$time)."</h2>";
1.414 albertel 901: } else {
902: my $title=&Apache::lonnet::gettitle($symb);
1.418 bisitz 903: $result .= "<h2>".&mt('This resource "[_1]" is open for a limited time.'
904: .' Once you click the "Show Resource" button below you have [_2] to complete this resource "[_1]".'
905: ,$title,$time)."</h2>";
1.414 albertel 906: }
1.352 albertel 907: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.418 bisitz 908: my $buttontext = &mt('Show Resource');
909: my $timertext = &mt('Start Timer?');
1.414 albertel 910: $result .= (<<ENDCHECKOUT);
1.444 bisitz 911: <form name="markaccess" method="post" action="$uri">
1.252 albertel 912: <input type="hidden" name="markaccess" value="yes" />
1.418 bisitz 913: <input type="button" name="accessbutton" value="$buttontext" onClick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
1.252 albertel 914: </form>
915: ENDCHECKOUT
1.414 albertel 916: return $result;
1.252 albertel 917: }
918:
1.204 albertel 919: sub init_problem_globals {
920: my ($type)=@_;
921: #initialize globals
1.308 foxr 922: # For problems, we start out in part 0 (outside a <part> tag).
923: # and part 0 is used to describe the main body of the <problem>
924: #
1.204 albertel 925: if ($type eq 'problem') {
926: $Apache::inputtags::part='0';
927: @Apache::inputtags::partlist=('0');
1.405 albertel 928: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 929: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 930:
1.266 albertel 931: } elsif ($type eq 'library') {
1.204 albertel 932: $Apache::inputtags::part='';
933: @Apache::inputtags::partlist=();
1.405 albertel 934: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 935: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 936:
1.304 albertel 937: } elsif ($type eq 'Task') {
938: $Apache::inputtags::part='0';
939: @Apache::inputtags::partlist=('0');
1.405 albertel 940: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 941: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 942: }
1.477 www 943: @Apache::functionplotresponse::callscripts=();
1.204 albertel 944: @Apache::inputtags::responselist = ();
945: @Apache::inputtags::importlist = ();
946: @Apache::inputtags::previous=();
947: @Apache::inputtags::previous_version=();
948: $Apache::structuretags::printanswer='No';
949: @Apache::structuretags::whileconds=();
950: @Apache::structuretags::whilebody=();
951: @Apache::structuretags::whileline=();
952: $Apache::lonhomework::scantronmode=0;
953: undef($Apache::lonhomework::name);
1.358 albertel 954: undef($Apache::lonhomework::default_type);
955: undef($Apache::lonhomework::type);
1.204 albertel 956: }
957:
958: sub reset_problem_globals {
959: my ($type)=@_;
960: undef(%Apache::lonhomework::history);
961: undef(%Apache::lonhomework::results);
962: undef($Apache::inputtags::part);
1.208 albertel 963: #don't undef this, lonhomework.pm takes care of this, we use this to
964: #detect if we try to do 2 problems in one file
965: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 966: undef($Apache::lonhomework::name);
1.358 albertel 967: undef($Apache::lonhomework::default_type);
968: undef($Apache::lonhomework::type);
969: undef($Apache::lonhomework::scantronmode);
970: undef($Apache::lonhomework::ignore_response_errors);
1.477 www 971: undef(@Apache::functionplotresponse::callscripts);
1.405 albertel 972: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 973: }
974:
1.241 albertel 975: sub set_problem_state {
1.240 albertel 976: my ($part)=@_;
1.284 albertel 977: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 978: $Apache::lonhomework::history{"resource.$part.solved"}=
979: 'correct_by_student';
980: }
981: }
982:
1.241 albertel 983: sub get_problem_status {
984: my ($part)=@_;
1.267 albertel 985: my $problem_status;
1.284 albertel 986: if ($env{'request.state'} eq 'construct' &&
987: defined($env{'form.problemstatus'})) {
988: $problem_status=$env{'form.problemstatus'};
1.267 albertel 989: } else {
990: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
991: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 992: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 993: }
994: return $problem_status;
995: }
996:
1.9 albertel 997: sub start_problem {
1.326 albertel 998: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 999:
1.311 foxr 1000: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 1001: if (!$Apache::lonxml::metamode) {
1002: &Apache::lonxml::startredirection();
1003: }
1.311 foxr 1004:
1.308 foxr 1005: # Problems don't nest and we don't allow more than one <problem> in
1006: # a .problem file.
1007: #
1.184 albertel 1008: if ( $Apache::inputtags::part ne '' ||
1009: $Apache::lonhomework::parsing_a_problem) {
1010: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 1011: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 1012: return '';
1013: }
1.184 albertel 1014:
1015: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 1016: &init_problem_globals('problem');
1.166 albertel 1017:
1.284 albertel 1018: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 1019: $Apache::lonhomework::scantronmode=1;
1020: }
1.161 albertel 1021:
1.159 albertel 1022: if ($target ne 'analyze') {
1.415 raeburn 1023: my $type = &Apache::lonnet::EXT('resource.0.type');
1024: $Apache::lonhomework::type=$type;
1.284 albertel 1025: if (($env{'request.state'} eq 'construct') &&
1.410 albertel 1026: $env{'form.problemtype'} =~ /\S/) {
1.284 albertel 1027: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 1028: }
1.332 albertel 1029: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 1030: }
1.164 albertel 1031: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 1032: my $uri=$env{'request.uri'};
1.159 albertel 1033: if ($uri=~/\.(\w+)$/) {
1034: $Apache::lonhomework::type=$1;
1035: &Apache::lonxml::debug("Using type of $1");
1036: } else {
1037: $Apache::lonhomework::type='problem';
1038: &Apache::lonxml::debug("Using default type, problem, :$uri:");
1039: }
1.87 albertel 1040: }
1.301 albertel 1041: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 1042:
1.363 albertel 1043: &initialize_storage();
1.389 albertel 1044: if ($target ne 'analyze'
1045: && $env{'request.state'} eq 'construct') {
1046: &set_problem_state('0');
1047: }
1048:
1.366 albertel 1049: if ($target eq 'web') {
1050: &Apache::lonxml::debug(" grading history ");
1051: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1052: }
1.363 albertel 1053:
1.159 albertel 1054: #added vars to the scripting enviroment
1.213 albertel 1055: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 1056: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 1057: &Apache::run::run($expression,$safeeval);
1.159 albertel 1058: my $status;
1059: my $accessmsg;
1060:
1.343 albertel 1061: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 1062: my ($result,$form_tag_start);
1.354 albertel 1063: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
1064: || $target eq 'edit') {
1.350 albertel 1065: ($result,$form_tag_start) =
1066: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1067: $name);
1068: }
1069:
1.284 albertel 1070: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 1071:
1.479 raeburn 1072: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval,$target); }
1.159 albertel 1073: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1074: $target eq 'tex') {
1.284 albertel 1075: if ($env{'form.markaccess'}) {
1.414 albertel 1076: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1077: &Apache::lonnet::set_first_access($interval[1]);
1.252 albertel 1078: }
1.479 raeburn 1079:
1080: ($status,$accessmsg,my $slot_name,my $slot) =
1081: &Apache::lonhomework::check_slot_access('0','problem');
1082: push (@Apache::inputtags::status,$status);
1083:
1.159 albertel 1084: #handle rand seed in construction space
1.479 raeburn 1085: my $rndseed=&setup_rndseed($safeeval,$target);
1.367 albertel 1086: my ($symb)=&Apache::lonnet::whichuser();
1.479 raeburn 1087:
1.333 albertel 1088: if ($env{'request.state'} ne "construct" &&
1089: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 1090: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
1.462 raeburn 1091: $rndseed.'" />'.
1092: '<input type="submit" name="resetdata"
1093: value="'.&mt('New Problem Variation').'" />';
1.334 albertel 1094: if (exists($env{'form.username'})) {
1095: $form_tag_start.=
1.164 albertel 1096: '<input type="hidden" name="username"
1.284 albertel 1097: value="'.$env{'form.username'}.'" />';
1.334 albertel 1098: }
1.462 raeburn 1099: if ($env{'request.role.adv'}) {
1100: $form_tag_start.= ' <label class="LC_nobreak">'
1101: .'<input type="checkbox" name="showallfoils"';
1102: if (defined($env{'form.showallfoils'})) {
1103: $form_tag_start.=' checked="checked"';
1104: }
1105: $form_tag_start.= ' /> '
1106: .&mt('Show All Foils')
1107: .'</label>';
1108: }
1.417 www 1109: if ($Apache::lonhomework::type eq 'practice') {
1.428 raeburn 1110: $form_tag_start.=&practice_problem_header();
1.417 www 1111: }
1.462 raeburn 1112: $form_tag_start.='<hr />';
1.479 raeburn 1113: } elsif (($env{'request.state'} ne "construct") &&
1114: ($Apache::lonhomework::type eq 'randomizetry') &&
1115: ($status eq 'CAN_ANSWER')) {
1116: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
1117: my $problemstatus = &get_problem_status($Apache::inputtags::part);
1118: $form_tag_start.=&randomizetry_problem_header($problemstatus,$reqtries);
1119: }
1.324 albertel 1120:
1.159 albertel 1121: my $expression='$external::datestatus="'.$status.'";';
1122: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
1123: &Apache::run::run($expression,$safeeval);
1124: &Apache::lonxml::debug("Got $status");
1.324 albertel 1125:
1.159 albertel 1126: if (( $status eq 'CLOSED' ) ||
1127: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1128: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 1129: ( $status eq 'BANNED') ||
1.216 albertel 1130: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 1131: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 1132: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1133: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1134: $style);
1.159 albertel 1135: if ( $target eq "web" ) {
1.343 albertel 1136: my $msg;
1.159 albertel 1137: if ($status eq 'UNAVAILABLE') {
1.245 albertel 1138: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.441 raeburn 1139: } elsif ($status eq 'NOT_IN_A_SLOT') {
1140: $msg.='<h1>'.&mt('You are not currently signed up to work at this time and/or place.').'</h1>';
1.253 albertel 1141: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 1142: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 1143: }
1.216 albertel 1144: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 1145: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 1146: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 1147: $msg.=&checkout_msg();
1.252 albertel 1148: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 1149: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 1150: } elsif ($status eq 'NOT_IN_A_SLOT') {
1.441 raeburn 1151: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work");
1.159 albertel 1152: }
1153: $result.=$msg.'<br />';
1154: } elsif ($target eq 'tex') {
1.332 albertel 1155: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
1156: : '\begin{minipage}{\textwidth}';
1.443 foxr 1157: $result.='\noindent \vskip 1 mm '.
1.332 albertel 1158: $startminipage.'\vskip 0 mm';
1.159 albertel 1159: if ($status eq 'UNAVAILABLE') {
1.211 albertel 1160: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 1161: } else {
1.211 albertel 1162: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 1163: }
1164: }
1.324 albertel 1165: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 1166: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
1167: $style);
1.324 albertel 1168: if ($target eq 'web') {
1.375 albertel 1169: $result .=
1170: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 1171: } elsif ($target eq 'grade') {
1172: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
1173: 'problem');
1174: }
1.159 albertel 1175: } elsif ($target eq 'web') {
1.360 albertel 1176: if ($status eq 'CAN_ANSWER'
1177: && $slot_name ne ''
1178: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
1179: # unproctored slot access, self checkin
1180: &Apache::bridgetask::check_in('problem',undef,undef,
1181: $slot_name);
1182: }
1.368 albertel 1183: $result.="\n $form_tag_start \t".
1.227 albertel 1184: '<input type="hidden" name="submitted" value="yes" />';
1185: # create a page header and exit
1.284 albertel 1186: if ($env{'request.state'} eq "construct") {
1187: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.428 raeburn 1188: if ($Apache::lonhomework::type eq 'practice') {
1189: $result.= '<input type="submit" name="resetdata" '.
1190: 'value="'.&mt('New Problem Variation').'" />'.
1191: &practice_problem_header().'<hr />';
1192: }
1.227 albertel 1193: }
1194: # if we are viewing someone else preserve that info
1.284 albertel 1195: if (defined $env{'form.grade_symb'}) {
1.227 albertel 1196: foreach my $field ('symb','courseid','domain','username') {
1197: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 1198: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 1199: }
1.479 raeburn 1200: foreach my $field ('trial','questiontype') {
1201: if ($env{"form.grade_$field"} ne '') {
1202: $result .= '<input type="hidden" name="grade_'.$field.
1203: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1204: }
1205: }
1.159 albertel 1206: }
1.490 raeburn 1207: if ($env{'form.grade_imsexport'}) {
1208: $result = '';
1209: }
1.159 albertel 1210: } elsif ($target eq 'tex') {
1.319 foxr 1211: $result .= 'INSERTTEXFRONTMATTERHERE';
1212:
1.99 sakharuk 1213: }
1.159 albertel 1214: } elsif ($target eq 'edit') {
1.343 albertel 1215: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 1216: $Apache::lonxml::warnings_error_header=
1217: &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 1218: my $temp=&Apache::edit::insertlist($target,$token);
1219: $result.=$temp;
1220: } elsif ($target eq 'modified') {
1221: $result=$token->[4];
1222: } else {
1223: # page_start returned a starting result, delete it if we don't need it
1224: $result = '';
1.99 sakharuk 1225: }
1.159 albertel 1226: return $result;
1.9 albertel 1227: }
1228:
1229: sub end_problem {
1.159 albertel 1230: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 1231: my $result;
1.310 foxr 1232:
1.321 albertel 1233: if (!$Apache::lonxml::metamode) {
1234: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 1235: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1236: }
1.319 foxr 1237:
1238: if ($target eq 'tex') {
1.321 albertel 1239: # Figure out the front matter and replace the
1240: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
1241: # this in end_problem because whether or not we display due
1242: # dates depends on whether due dates have already been
1243: # displayed in the problem parts.
1244:
1.319 foxr 1245: my $frontmatter = '';
1246: my $startminipage = '';
1247: if (not $env{'form.problem_split'}=~/yes/) {
1248: $startminipage = '\begin{minipage}{\textwidth}';
1249: }
1250: my $id = $Apache::inputtags::part;
1251: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1252: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1253: my @packages = split /,/,$packages;
1254: my $allow_print_points = 0;
1255: foreach my $partial_key (@packages) {
1256: if ($partial_key=~m/^part_0$/) {
1257: $allow_print_points=1;
1258: }
1259: }
1260: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1261: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
1262: if (lc($env{'course.'.$env{'request.course.id'}.
1263: '.disableexampointprint'}) eq 'yes') {
1264: $allow_print_points=0;
1265: }
1266: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
1.443 foxr 1267: my $begin_doc=' \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
1.319 foxr 1268: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
1269: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
1270:
1271: # Figure out what the due date is and if we need to print
1272: # it in the problem header. We have been logging the
1273: # last due date written to file.
1274:
1275: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
1276: my $duedate = POSIX::strftime("%c",localtime($duetime));
1.448 bisitz 1277: my $duedate_text = &mt('Due date: [_1]'
1278: ,&Apache::lonlocal::locallocaltime($duetime));
1.319 foxr 1279: my $temp_file;
1280: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
1281:
1282: # Figure out what the last printed due date is or set it
1283: # to the epoch if no duedates have been printed.
1284:
1285: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
1286: if (-e $filename) {
1287: $temp_file = Apache::File->new($filename);
1288: my @due_file = <$temp_file>;
1289: $due_file_content = $due_file[$#due_file];
1290: chomp $due_file_content;
1291: }
1292:
1293: # We display the due date iff it is not the same as the last
1294: # duedate in problem header ($due_file_content), and
1295: # none of our parts displayed a duedate.
1296: #
1297: my $parts_with_displayduedate;
1298: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
1299: $parts_with_displayduedate =
1300: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
1301: } else {
1302: $parts_with_displayduedate = 0;
1303: }
1304: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
1305: $temp_file = Apache::File->new('>'.$filename);
1306: print $temp_file "$duetime\n";
1307: if (not $env{'request.symb'} =~ m/\.page_/) {
1308: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1309: $frontmatter .= $begin_doc.
1.448 bisitz 1310: '\textit{'.$duedate_text.'} '.$toc_line;
1.319 foxr 1311: } else {
1312: $frontmatter.= $begin_doc.$toc_line;
1.463 foxr 1313: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) {
1.492 christia 1314: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 1315: }
1.319 foxr 1316: }
1317: } else {
1.448 bisitz 1318: $frontmatter .= '\vskip 1mm\textit{'.$duedate_text.'} \\\\\\\\'.$startminipage;
1.319 foxr 1319: }
1320: } else {
1321: if (not $env{'request.symb'} =~ m/\.page_/) {
1322: $frontmatter .= $begin_doc.$toc_line;
1.463 foxr 1323: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) {
1.492 christia 1324: $frontmatter .= '\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 1325: }
1.319 foxr 1326: } else {
1.381 albertel 1327: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 1328: }
1329: }
1330: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
1331: }
1332:
1.159 albertel 1333: my $status=$Apache::inputtags::status['-1'];
1334: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
1335: $target eq 'tex') {
1.249 albertel 1336: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 1337: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 1338: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
1339: &Apache::inputtags::grade;
1.324 albertel 1340: } elsif ($status eq 'NEEDS_CHECKIN') {
1341: # no need to grade, and don't want to hide data
1.249 albertel 1342: } else {
1343: # move any submission data to .hidden
1344: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1345: }
1.159 albertel 1346: } elsif ( ($target eq 'web' || $target eq 'tex') &&
1347: $Apache::inputtags::part eq '0' &&
1.490 raeburn 1348: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED'
1349: && !$env{'form.grade_imsexport'}) {
1.159 albertel 1350: # if part is zero, no <part>s existed, so we need show the current
1351: # grading status
1352: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
1353: $result.= $gradestatus;
1354: }
1355: if (
1.284 albertel 1356: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 1357: ($target eq 'answer') || ($target eq 'tex')
1358: ) {
1.490 raeburn 1359: if (($target ne 'tex') &&
1360: ($env{'form.answer_output_mode'} ne 'tex') &&
1361: (!$env{'form.grade_imsexport'})) {
1.254 www 1362: $result.="</form>";
1.159 albertel 1363: }
1364: if ($target eq 'web') {
1.346 albertel 1365: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1366: } elsif ($target eq 'tex') {
1.178 sakharuk 1367: my $endminipage = '';
1.284 albertel 1368: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 1369: $endminipage = '\end{minipage}';
1370: }
1.284 albertel 1371: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 1372: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 1373: } else {
1.262 sakharuk 1374: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 1375: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 1376: $result .= $endminipage.'\end{document} ';
1377: } else {
1.382 albertel 1378: $result .= $endminipage;
1.262 sakharuk 1379: }
1.159 albertel 1380: }
1381: }
1382: }
1.476 www 1383: if ($target eq 'web') {
1384: $result.=&Apache::functionplotresponse::init_script();
1385: }
1.159 albertel 1386: if ($target eq 'grade') {
1387: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1388: &finalize_storage();
1389: }
1.284 albertel 1390: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
1391: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 1392: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 1393: # normally we get it from above, but in CSTR
1.172 albertel 1394: # we always show answer mode too.
1.159 albertel 1395: }
1396: } elsif ($target eq 'meta') {
1397: if ($Apache::inputtags::part eq '0') {
1.179 albertel 1398: @Apache::inputtags::response=();
1.159 albertel 1399: $result=&Apache::response::mandatory_part_meta;
1400: }
1.215 albertel 1401: $result.=&Apache::response::meta_part_order();
1.258 albertel 1402: $result.=&Apache::response::meta_response_order();
1.159 albertel 1403: } elsif ($target eq 'edit') {
1404: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1405: $result .= &problem_edit_footer();
1.320 albertel 1406: } elsif ($target eq 'modified') {
1407: $result .= $token->[2];
1.159 albertel 1408: }
1.155 albertel 1409:
1.284 albertel 1410: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1411: &Apache::inputtags::check_for_duplicate_ids();
1412: }
1.204 albertel 1413:
1414: &reset_problem_globals('problem');
1.159 albertel 1415:
1416: return $result;
1.48 albertel 1417: }
1418:
1.108 albertel 1419:
1.48 albertel 1420: sub start_library {
1.159 albertel 1421: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1422: my ($result,$form_tag_start);
1.371 albertel 1423: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1424: &init_problem_globals('library');
1425: $Apache::lonhomework::type='problem';
1426: }
1.159 albertel 1427: if ($target eq 'edit') {
1.343 albertel 1428: ($result,$form_tag_start)=
1429: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1430: 'Edit');
1431: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1432: my $temp=&Apache::edit::insertlist($target,$token);
1433: $result.=$temp;
1434: } elsif ($target eq 'modified') {
1435: $result=$token->[4];
1.340 albertel 1436: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1437: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1438: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1439: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1440: ($result,$form_tag_start)=
1441: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1442: $name);
1.479 raeburn 1443: my $rndseed=&setup_rndseed($safeeval,$target);
1.343 albertel 1444: $result.=" \n $form_tag_start".
1.159 albertel 1445: '<input type="hidden" name="submitted" value="yes" />';
1446: $result.=&problem_web_to_edit_header($rndseed);
1.428 raeburn 1447: if ($Apache::lonhomework::type eq 'practice') {
1448: $result.= '<input type="submit" name="resetdata" '.
1449: 'value="'.&mt('New Problem Variation').'" />'.
1450: &practice_problem_header().'<hr />';
1451: }
1.159 albertel 1452: }
1453: return $result;
1.48 albertel 1454: }
1455:
1456: sub end_library {
1.159 albertel 1457: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1458: my $result='';
1459: if ($target eq 'edit') {
1460: $result=&problem_edit_footer();
1.371 albertel 1461: } elsif ($target eq 'web'
1462: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1463: && $env{'request.state'} eq "construct") {
1.349 albertel 1464: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1465: }
1.371 albertel 1466: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1467: &reset_problem_globals('library');
1468: }
1.159 albertel 1469: return $result;
1.197 www 1470: }
1471:
1472: sub start_definetag {
1.326 albertel 1473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1474:
1475: my $result;
1476:
1477: my $name = $token->[2]->{'name'};
1.326 albertel 1478: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1479: if ($target eq 'web') {
1480: if ($name=~/^\//) {
1481: $result=
1482: '<br /><table class="LC_sty_end"><tr><th>'.
1483: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1484: } else {
1485: $result=
1486: '<br /><table class="LC_sty_begin"><tr><th>'.
1487: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1488: }
1489: $skip = &HTML::Entities::encode($skip, '<>&"');
1490: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1491: }
1492: return $result;
1493: }
1494:
1495: sub end_definetag {
1496: return '';
1.1 albertel 1497: }
1498:
1499: sub start_block {
1.201 albertel 1500: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1501:
1502: my $result;
1.1 albertel 1503:
1.339 albertel 1504: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1505: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1506: my $code = $token->[2]->{'condition'};
1.385 albertel 1507: if (defined($code) && $code ne '') {
1.137 albertel 1508: if (!$Apache::lonxml::default_homework_loaded) {
1509: &Apache::lonxml::default_homework_load($safeeval);
1510: }
1.131 albertel 1511: $result = &Apache::run::run($code,$safeeval);
1512: &Apache::lonxml::debug("block :$code: returned :$result:");
1513: } else {
1514: $result='1';
1515: }
1516: if ( ! $result ) {
1.201 albertel 1517: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1518: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1519: }
1520: $result='';
1521: } elsif ($target eq 'edit') {
1522: $result .=&Apache::edit::tag_start($target,$token);
1523: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1524: $token,40);
1525: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1526: } elsif ($target eq 'modified') {
1527: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1528: $safeeval,'condition');
1529: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1530: }
1.131 albertel 1531: return $result;
1.1 albertel 1532: }
1533:
1534: sub end_block {
1.167 www 1535: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1536: my $result;
1537: if ($target eq "edit") {
1538: $result.= &Apache::edit::tag_end($target,$token,'');
1539: }
1540: return $result;
1541: }
1.497.2.1 foxr 1542: #
1543: # <languageblock [include='lang1,lang2...'] [exclude='lang1,lang2...']>
1544: # ...
1545: # </languageblock>
1546: #
1547: # This declares the intent to provide content that can be rendered in the
1548: # set of languages in the include specificatino but not in the exclude
1549: # specification. If a currently preferred language is in the include list
1550: # the content in the <languageblock>...</languageblock> is rendered
1551: # If the currently preferred language is in the exclude list,
1552: # the content in the <languageblock>..></languageblock is not rendered.
1553: #
1554: # Pathalogical case handling:
1555: # - Include specified, without the preferred language but exclude specified
1556: # also without the preferred langauge results in rendering the block.
1557: # - Exclude specified without include and excluden not containing a
1558: # preferred language renders the block.
1559: # - Include and exclude both specifying the preferred language does not
1560: # render the block.
1561: # - If neither include/exclude is specified, the block gets rendered.
1562: #
1563: # This tag has no effect when target is in {edit, modified}
1564: #
1.167 www 1565: sub start_languageblock {
1.201 albertel 1566: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1567:
1.497.2.1 foxr 1568: my $result = '';
1.167 www 1569:
1.339 albertel 1570: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1571: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1572: my $include = $token->[2]->{'include'};
1573: my $exclude = $token->[2]->{'exclude'};
1.436 raeburn 1574: my @preferred_languages=&Apache::lonlocal::preferred_languages();
1.497.2.1 foxr 1575:
1576: # This should not even happen, since we should at least have the server language
1577:
1578: if (!$preferred_languages[0]) {
1579: $preferred_languages[0]='en';
1580: }
1581:
1582: # Now loop over all languages in order of preference
1583:
1.398 www 1584: foreach my $preferred_language (@preferred_languages) {
1.497.2.1 foxr 1585:
1586: # If neither include/nor exlude is present the block is going
1587: # to get rendered.
1588:
1589: my $render=1;
1.399 www 1590: my $found=0;
1.497.2.1 foxr 1591:
1592: # If include is specified, don't render the block
1593: # unless the preferred language is included in the set.
1594:
1.398 www 1595: if ($include) {
1.497.2.1 foxr 1596: $render=0;
1.398 www 1597: foreach my $included_language (split(/\,/,$include)) {
1598: if ($included_language eq $preferred_language) {
1.497.2.1 foxr 1599: $render=1;
1.399 www 1600: $found=1;
1.497.2.1 foxr 1601: last; # Only need to find the first.
1.398 www 1602: }
1603: }
1604: }
1.497.2.1 foxr 1605: # Do we have an exclude argument?
1606: # If so, and one of the languages matches a preferred language
1607: # inhibit rendering the block. Note that in the pathalogical case the
1608: # author has specified a preferred language in both the include and exclude
1609: # attribte exclude is preferred.
1610:
1.398 www 1611: if ($exclude) {
1.497.2.1 foxr 1612: $render=1;
1.398 www 1613: foreach my $excluded_language (split(/\,/,$exclude)) {
1614: if ($excluded_language eq $preferred_language) {
1.497.2.1 foxr 1615: $render=0;
1.399 www 1616: $found=1;
1.497.2.1 foxr 1617: last; # Only need to find the first.
1.398 www 1618: }
1619: }
1620: }
1.497.2.1 foxr 1621: if ($found) {
1622: last; # Done on any match of include or exclude.
1623: }
1.398 www 1624: }
1.497.2.1 foxr 1625: # If $render not true skip the entire block until </languageblock>
1626: #
1627:
1628: if ( ! $render ) {
1.201 albertel 1629: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1630: $style);
1631: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1632: }
1.497.2.1 foxr 1633: # If $render is true, we've not skipped the contents of the <languageglock>
1634: # and the normal loncapa processing flow will render it as a matter of course.
1635:
1.167 www 1636: } elsif ($target eq 'edit') {
1637: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1638: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1639: $token,40);
1.211 albertel 1640: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1641: $token,40);
1642: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1643: } elsif ($target eq 'modified') {
1644: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1645: $safeeval,'include',
1646: 'exclude');
1.167 www 1647: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1648: }
1649: return $result;
1650: }
1651:
1652: sub end_languageblock {
1.170 www 1653: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1654: my $result;
1.201 albertel 1655: if ($target eq "edit") {
1.170 www 1656: $result.= &Apache::edit::tag_end($target,$token,'');
1657: }
1658: return $result;
1659: }
1660:
1.397 albertel 1661: {
1.497.2.2! foxr 1662: # For chunks of a resource that has translations, this hash contains
! 1663: # the translations available indexed by language name.
! 1664: #
! 1665:
! 1666: my %available_texts;
! 1667:
! 1668: # <translated> starts a block of a resource that has multiple translations.
! 1669: # See the <lang> tag as well.
! 1670: # When </translated> is encountered if there is a translation for the
! 1671: # currently preferred language, that is rendered inthe web/tex/webgrade
! 1672: # targets. Otherwise, the default text is rendered.
! 1673: #
! 1674: # Note that <lang> is only registered for the duration of the
! 1675: # <translated>...</translated> block
! 1676: #
! 1677: # Pathalogical case handling:
! 1678: # - If there is no <lang> that specifies a 'default' and there is no
! 1679: # translation that matches a preferred language, nothing is rendered.
! 1680: # - Nested <translated>...</translated> might be linguistically supported by
! 1681: # XML due to the stack nature of tag registration(?) however the rendered
! 1682: # output will be incorrect because there is only one %available_texts
! 1683: # has and end_translated clears it.
! 1684: # - Material outside of a <lang>...</lang> block within the
! 1685: # <translated>...<translated> block won't render either e.g.:
! 1686: # <translated>
! 1687: # The following will be in your preferred langauge:
! 1688: # <lang which='en'>
! 1689: # This section in english
! 1690: # </lang>
! 1691: # <lang which='sgeiso'>
! 1692: # Hier es ist auf Deutsch.
! 1693: # </lang>
! 1694: # <lang which='sfriso'>
! 1695: # En Francais
! 1696: # </lang>
! 1697: # </translated>
! 1698: #
! 1699: # The introductory text prior to the first <lang> tag is not rendered.
! 1700: #
1.397 albertel 1701: sub start_translated {
1702: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1703: &Apache::lonxml::register('Apache::structuretags',('lang'));
1704: undef(%available_texts);
1705: }
1706:
1707: sub end_translated {
1708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1709: my $result;
1710: #show the translation on viewable targets
1711: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1712: # or non-viewable targets, if it's embedded in something that
1713: # wants the output
1714: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1715: && &Apache::lonxml::in_redirection() ) ) {
1716: my @possibilities = keys(%available_texts);
1717: my $which =
1718: &Apache::loncommon::languages(\@possibilities) || 'default';
1719: $result = $available_texts{$which};
1720: }
1721: undef(%available_texts);
1722: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1723: return $result;
1724: }
1725:
1726:
1727: sub start_lang {
1728: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1729: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1730: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1731: &Apache::lonxml::startredirection();
1732: }
1733: return '';
1734: }
1735:
1736: sub end_lang {
1737: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1738: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1739: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1740: my $result = &Apache::lonxml::endredirection();
1741: my $which = &Apache::lonxml::get_param('which',$parstack,
1742: $safeeval);
1.431 raeburn 1743: if ($which=~/\w/) {
1744: $available_texts{$which} = $result;
1745: }
1746: my $otherlangs = &Apache::lonxml::get_param('other',$parstack,
1747: $safeeval);
1748: foreach my $language (split(/\s*\,\s*/,$otherlangs)) {
1749: if ($language=~/\w/) {
1750: $available_texts{$language} = $result;
1751: }
1.427 bisitz 1752: }
1753:
1.397 albertel 1754: }
1755: return '';
1756: }
1757: }
1758:
1.170 www 1759: sub start_instructorcomment {
1.201 albertel 1760: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1761:
1762: my $result;
1763:
1.339 albertel 1764: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1765: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.468 raeburn 1766: $result=($env{'request.role'}=~/^(in|cc|co|au|ca|li)/);
1.284 albertel 1767: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1768: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1769: $parser,$style);
1.170 www 1770: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1771: }
1772: $result='';
1773: } elsif ($target eq 'edit') {
1774: $result .=&Apache::edit::tag_start($target,$token);
1775: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1776: }
1777: return $result;
1778: }
1779:
1780: sub end_instructorcomment {
1.159 albertel 1781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1782: my $result;
1783: if ($target eq "edit") {
1784: $result.= &Apache::edit::tag_end($target,$token,'');
1785: }
1786: return $result;
1.4 tsai 1787: }
1788:
1789: sub start_while {
1.326 albertel 1790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1791:
1.160 albertel 1792: my $result;
1.339 albertel 1793: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1794: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1795: my $code = $token->[2]->{'condition'};
1.4 tsai 1796:
1.160 albertel 1797: push( @Apache::structuretags::whileconds, $code);
1798: if (!$Apache::lonxml::default_homework_loaded) {
1799: &Apache::lonxml::default_homework_load($safeeval);
1800: }
1801: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1802: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1803: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1804: push( @Apache::structuretags::whileline, $token->[5]);
1805: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1806: if ( $result ) {
1807: &Apache::lonxml::newparser($parser,\$bodytext);
1808: }
1809: } elsif ($target eq 'edit') {
1810: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1811: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1812: $token,40);
1813: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1814: } elsif ($target eq 'modified') {
1815: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1816: $safeeval,'condition');
1817: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1818: }
1.160 albertel 1819: return $result;
1.4 tsai 1820: }
1821:
1822: sub end_while {
1.159 albertel 1823: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1824: my $result;
1825:
1.339 albertel 1826: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1827: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1828: my $code = pop(@Apache::structuretags::whileconds);
1829: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1830: my $line = pop(@Apache::structuretags::whileline);
1831: my $return = &Apache::run::run($code,$safeeval);
1832: my $starttime=time;
1833: my $error=0;
1834: while ($return) {
1835: if (time-$starttime >
1836: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1837: $return = 0; $error=1; next;
1.161 albertel 1838: }
1839: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1840: if ($target eq 'grade' || $target eq 'answer' ||
1841: $target eq 'analyze') {
1842: # grade/answer/analyze should produce no output but if we
1843: # are redirecting, the redirecter should know what to do
1844: # with the output
1845: if (!$Apache::lonxml::redirection) { undef($result); }
1846: }
1.161 albertel 1847: $return = &Apache::run::run($code,$safeeval);
1848: }
1849: if ($error) {
1.430 bisitz 1850: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occurred while running <while> on line').' '.$line.'</pre>');
1.160 albertel 1851: }
1852: } elsif ($target eq "edit") {
1853: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1854: }
1.160 albertel 1855: return $result;
1.1 albertel 1856: }
1.6 tsai 1857:
1.160 albertel 1858: # <randomlist show="1">
1.6 tsai 1859: # <tag1>..</tag1>
1860: # <tag2>..</tag2>
1861: # <tag3>..</tag3>
1.160 albertel 1862: # ...
1.6 tsai 1863: # </randomlist>
1864: sub start_randomlist {
1.326 albertel 1865: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1866: my $result;
1.339 albertel 1867: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1868: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1869: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1870: my $b_parser= HTML::LCParser->new(\$body);
1871: $b_parser->xml_mode(1);
1872: $b_parser->marked_sections(1);
1.159 albertel 1873: my $b_tok;
1874: my @randomlist;
1875: my $list_item;
1876: while($b_tok = $b_parser->get_token() ) {
1877: if($b_tok->[0] eq 'S') { # start tag
1878: # get content of the tag until matching end tag
1879: # get all text upto the matching tag
1880: # and push the content into @randomlist
1881: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1882: $b_parser);
1883: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1884: push(@randomlist,$list_item);
1885: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1886: # $list_item</b>";
1887: }
1888: if($b_tok->[0] eq 'T') { # text
1889: # what to do with text in between tags?
1890: # print "<b>TEXT $b_tok->[1]</b><br />";
1891: }
1892: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1893: # print "<b>END-TAG $b_tok->[1]</b><br />";
1894: # }
1895: }
1.303 albertel 1896: if (@randomlist) {
1897: my @idx_arr = (0 .. $#randomlist);
1898: &Apache::structuretags::shuffle(\@idx_arr);
1899: my $bodytext = '';
1900: my $show=$#randomlist;
1901: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1902: $showarg--;
1903: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1.439 raeburn 1904: if (($target eq 'analyze') && ($env{'form.check_parts_withrandomlist'})) {
1905: my @currlist;
1906: my $part = $Apache::inputtags::part;
1907: if ($part ne '') {
1908: if (ref($Apache::lonhomework::analyze{'parts_withrandomlist'}) eq 'ARRAY') {
1909: my @currlist = @{$Apache::lonhomework::analyze{'parts_withrandomlist'}};
1910: if (!(grep(/^\Q$part\E$/,@currlist))) {
1911: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
1912: }
1913: } else {
1914: push(@{$Apache::lonhomework::analyze{'parts_withrandomlist'}},$part);
1915: }
1916: }
1917: }
1.303 albertel 1918: for(0 .. $show) {
1919: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1920: }
1921: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1922: }
1923: } elsif ($target eq 'edit' ) {
1924: $result .=&Apache::edit::tag_start($target,$token);
1925: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1926: $token,5);
1927: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1928: } elsif ($target eq 'modified' ) {
1929: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1930: $safeeval,'show');
1931: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1932: }
1933: return $result;
1.7 tsai 1934: }
1935:
1936: sub shuffle {
1937: my $a=shift;
1938: my $i;
1.303 albertel 1939: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1940: &Apache::response::pushrandomnumber();
1.159 albertel 1941: for($i=@$a;--$i;) {
1942: my $j=int(&Math::Random::random_uniform() * ($i+1));
1943: next if $i == $j;
1944: @$a[$i,$j] = @$a[$j,$i];
1945: }
1.251 albertel 1946: &Apache::response::poprandomnumber();
1.7 tsai 1947: }
1.6 tsai 1948: }
1949:
1950: sub end_randomlist {
1.159 albertel 1951: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1952: my $result;
1953: if ($target eq 'edit' ) {
1954: $result=&Apache::edit::tag_end($target,$token,
1955: 'End Randomly Parsed Block');
1956: }
1957: return $result;
1.6 tsai 1958: }
1959:
1.283 albertel 1960: sub ordered_show_check {
1961: my $last_part=$Apache::inputtags::partlist[-2];
1962: my $in_order=
1963: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1964: my $in_order_show=1;
1965: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1966: $in_order_show=&Apache::response::check_status($last_part);
1967: }
1968: return $in_order_show;
1969: }
1970:
1.469 www 1971:
1972: sub start_startpartmarker {
1973: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1974: my $result='';
1975: if ($target eq 'edit') {
1976: $result=&Apache::edit::tag_start($target,$token);
1977: $result.=&mt('Marker for the start of a part. Place end marker below to wrap in-between tags into a new part.').'</td></tr>';
1978: $result.=&Apache::edit::end_table();
1979:
1980: }
1981: return $result;
1982: }
1983:
1984: sub end_startpartmarker {
1985: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1986: my @result;
1987: if ($target eq 'edit') { $result[1]='no'; }
1988: return @result;
1989: }
1990:
1991: sub start_endpartmarker {
1992: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1993: my $result='';
1994: if ($target eq 'edit') {
1995: $result=&Apache::edit::tag_start($target,$token);
1996: $result.=&mt('Marker for the end of a part. Place start marker above to wrap in-between tags into a new part.').'</td></tr>';
1997: $result.=&Apache::edit::end_table();
1998:
1999: }
2000: return $result;
2001: }
2002:
2003: sub end_endpartmarker {
2004: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2005: my @result;
2006: if ($target eq 'edit') { $result[1]='no'; }
2007: return @result;
2008: }
2009:
2010:
2011:
2012:
2013:
1.11 albertel 2014: sub start_part {
1.326 albertel 2015: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 2016: if (!$Apache::lonxml::metamode) {
2017: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
2018: # duedates.
2019: }
1.159 albertel 2020: my $result='';
1.386 albertel 2021: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 2022: $Apache::inputtags::part=$id;
1.177 albertel 2023: push(@Apache::inputtags::partlist,$id);
2024: @Apache::inputtags::response=();
1.159 albertel 2025: @Apache::inputtags::previous=();
2026: @Apache::inputtags::previous_version=();
1.405 albertel 2027: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 2028: &Apache::response::reset_params();
2029:
1.159 albertel 2030: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 2031: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
2032: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 2033: my $in_order_show=&ordered_show_check();
1.214 albertel 2034: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 2035: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 2036: &Apache::run::run($expression,$safeeval);
1.159 albertel 2037:
2038: if ($target eq 'meta') {
1.224 www 2039: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
2040: return &Apache::response::mandatory_part_meta.
2041: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 2042: } elsif ($target eq 'web' || $target eq 'grade' ||
2043: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 2044: if ($hidden || !$in_order_show) {
1.326 albertel 2045: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 2046: } else {
2047: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
2048: push (@Apache::inputtags::status,$status);
2049: my $expression='$external::datestatus="'.$status.'";';
2050: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
2051: &Apache::run::run($expression,$safeeval);
1.284 albertel 2052: if ($env{'request.state'} eq 'construct') {
1.241 albertel 2053: &set_problem_state($Apache::inputtags::part);
1.240 albertel 2054: }
1.216 albertel 2055: if (( $status eq 'CLOSED' ) ||
2056: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 2057: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 2058: ( $status eq 'BANNED') ||
2059: ( $status eq 'UNAVAILABLE') ||
2060: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 2061: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
2062: $style);
1.159 albertel 2063: if ( $target eq "web" ) {
1.211 albertel 2064: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 2065: } elsif ( $target eq 'tex' ) {
1.284 albertel 2066: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 2067: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 2068: } else {
1.211 albertel 2069: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 2070: }
1.159 albertel 2071: }
2072: } else {
2073: if ($target eq 'tex') {
1.284 albertel 2074: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 2075: if ($$tagstack[-2] eq 'td') {
1.388 foxr 2076: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 2077: } else {
2078: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
2079: }
1.195 sakharuk 2080: }
1.159 albertel 2081: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 2082: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 2083: my @allkeys = split /,/,$allkeys;
2084: my $allow_print_points = 0;
2085: foreach my $partial_key (@allkeys) {
1.230 albertel 2086: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 2087: if ($1 ne '0') {$allow_print_points=1;}
2088: }
2089: }
1.275 albertel 2090: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
2091: if (defined($maxtries) && $maxtries < 0) {
2092: $allow_print_points=0;
2093: }
1.302 albertel 2094: if (lc($env{'course.'.$env{'request.course.id'}.
2095: '.disableexampointprint'}) eq 'yes') {
2096: $allow_print_points=0;
2097: }
1.463 foxr 2098: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) {
1.492 christia 2099: $result .= '\vskip 10mm\fbox{\textit{'.&mt('[quant,_1,pt,pt]',$weight ).'}}';
1.463 foxr 2100:
2101: }
1.233 www 2102: } elsif ($target eq 'web') {
1.479 raeburn 2103: if ($status eq 'CAN_ANSWER') {
2104: my $problemstatus = &get_problem_status($Apache::inputtags::part);
2105: my $probrandomize = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].type");
2106: my $probrandtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::partlist[0].randomizeontries");
2107: my $num = scalar(@Apache::inputtags::partlist)-1;
2108: if ($probrandomize eq 'randomizetry') {
2109: if (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") ne 'randomizetry') {
2110: $result .= &randomizetry_part_header($problemstatus,'none',$num);
2111: } else {
2112: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
2113: if ($probrandtries ne $reqtries) {
2114: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
2115: }
2116: }
2117: } elsif (&Apache::lonnet::EXT("resource.$Apache::inputtags::part.type") eq 'randomizetry') {
2118: my $reqtries = &Apache::lonnet::EXT("resource.$Apache::inputtags::part.randomizeontries");
2119: $result .= &randomizetry_part_header($problemstatus,$reqtries,$num);
2120: }
2121: }
1.475 raeburn 2122: $result.='<a name="'.&escape($Apache::inputtags::part).'" ></a>';
1.159 albertel 2123: }
2124: }
2125: }
2126: } elsif ($target eq 'edit') {
2127: $result.=&Apache::edit::tag_start($target,$token);
2128: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
2129: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 2130: ' '.
2131: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 2132: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
2133: } elsif ($target eq 'modified') {
2134: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 2135: $safeeval,'id','display');
1.159 albertel 2136: if ($constructtag) {
1.225 albertel 2137: #limiting ids to only letters numbers, and space
1.224 www 2138: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 2139: $result = &Apache::edit::rebuild_tag($token);
2140: }
2141: }
2142: return $result;
1.11 albertel 2143: }
2144:
2145: sub end_part {
1.159 albertel 2146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2147: &Apache::lonxml::debug("in end_part $target ");
2148: my $status=$Apache::inputtags::status['-1'];
2149: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 2150: my $in_order_show=&ordered_show_check();
1.321 albertel 2151: my $result;
2152: if (!$Apache::lonxml::metamode) {
2153: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 2154: $Apache::lonxml::post_evaluate=0;
1.321 albertel 2155: }
1.312 albertel 2156: if ($target eq 'grade') {
1.249 albertel 2157: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 2158: !$hidden && $in_order_show) {
1.311 foxr 2159: $result.=&Apache::inputtags::grade;
1.249 albertel 2160: } else {
2161: # move any submission data to .hidden
2162: &Apache::inputtags::hidealldata($Apache::inputtags::part);
2163: }
1.283 albertel 2164: } elsif (($target eq 'web' || $target eq 'tex') &&
2165: !$hidden && $in_order_show) {
1.159 albertel 2166: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
2167: $target);
1.490 raeburn 2168: if (($Apache::lonhomework::type eq 'exam' && $target eq 'tex') ||
2169: ($env{'form.grade_imsexport'})) {
1.212 albertel 2170: $gradestatus='';
2171: }
1.311 foxr 2172: $result.=$gradestatus;
1.265 sakharuk 2173: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 2174: } elsif ($target eq 'edit') {
1.311 foxr 2175: $result.=&Apache::edit::end_table();
1.322 albertel 2176: } elsif ($target eq 'modified') {
2177: $result .= $token->[2];
1.159 albertel 2178: }
2179: pop @Apache::inputtags::status;
2180: $Apache::inputtags::part='';
1.295 albertel 2181: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 2182: return $result;
1.11 albertel 2183: }
1.1 albertel 2184:
1.25 albertel 2185: sub start_preduedate {
1.326 albertel 2186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 2187: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2188: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 2189: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 2190: if (!$Apache::lonhomework::scantronmode &&
2191: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 2192: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
2193: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 2194: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 2195: }
1.24 albertel 2196: }
1.159 albertel 2197: return '';
1.24 albertel 2198: }
2199:
1.25 albertel 2200: sub end_preduedate {
1.159 albertel 2201: return '';
1.24 albertel 2202: }
2203:
1.369 foxr 2204: # In all the modes where <postanswerdate> text is
2205: # displayable, all we do is eat up the text between the start/stop
2206: # tags if the conditions are not right to display it.
1.25 albertel 2207: sub start_postanswerdate {
1.326 albertel 2208: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 2209: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
2210: &Apache::lonnet::allowed('pav',
2211: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 2212: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 2213: $target eq 'tex' ) {
1.300 albertel 2214: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 2215: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
2216: (($target eq 'tex') && !$pav)) {
1.326 albertel 2217: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 2218: }
2219: }
2220: return '';
1.24 albertel 2221: }
2222:
1.25 albertel 2223: sub end_postanswerdate {
1.159 albertel 2224: return '';
1.24 albertel 2225: }
2226:
1.25 albertel 2227: sub start_notsolved {
1.326 albertel 2228: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2229: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 2230: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 2231: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
2232: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 2233: if ($gradestatus =~ /^correct/ &&
2234: &Apache::response::show_answer()) {
1.159 albertel 2235: &Apache::lonxml::debug("skipping");
1.326 albertel 2236: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 2237: }
1.24 albertel 2238: }
1.159 albertel 2239: return '';
1.24 albertel 2240: }
2241:
1.25 albertel 2242: sub end_notsolved {
1.159 albertel 2243: return '';
1.24 albertel 2244: }
2245:
2246: sub start_solved {
1.326 albertel 2247: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2248: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2249: $target eq 'tex') {
2250: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 2251: if ($gradestatus !~ /^correct/ ||
2252: !&Apache::response::show_answer()) {
1.326 albertel 2253: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 2254: }
1.24 albertel 2255: }
1.159 albertel 2256: return '';
1.24 albertel 2257: }
2258:
2259: sub end_solved {
1.248 albertel 2260: return '';
2261: }
2262:
2263: sub start_problemtype {
1.326 albertel 2264: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 2265: my $result;
1.339 albertel 2266: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
2267: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 2268: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
2269: if (!defined($mode)) { $mode='show'; }
2270: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
2271: my $found=0;
2272: foreach my $type (split(',',$for)) {
2273: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
2274: }
2275: if ($mode eq 'show' && !$found) {
1.326 albertel 2276: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 2277: }
2278: if ($mode eq 'hide' && $found) {
1.326 albertel 2279: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 2280: }
2281: } elsif ($target eq 'edit') {
2282: $result .=&Apache::edit::tag_start($target,$token);
2283: $result.=&Apache::edit::select_arg('Mode:','mode',
2284: [['show','Show'],
2285: ['hide','Hide']]
2286: ,$token);
2287: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
2288: [ ['exam','Exam/Quiz Problem'],
2289: ['survey','Survey'],
1.465 raeburn 2290: ['surveycred','Survey (with credit)'],
2291: ['anonsurvey','Anonymous Survey'],
2292: ['anonsurveycred','Anonymous Survey (with credit)'],
1.428 raeburn 2293: ['problem','Homework Problem'],
1.479 raeburn 2294: ['practice','Practice Problem'],
2295: ['randomizetry','New Randomization Each Try'] ]
1.248 albertel 2296: ,$token);
2297: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2298: } elsif ($target eq 'modified') {
2299: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2300: $safeeval,'mode','for');
2301: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2302: }
2303: return $result;
2304: }
2305:
2306: sub end_problemtype {
1.159 albertel 2307: return '';
1.24 albertel 2308: }
1.34 albertel 2309:
2310: sub start_startouttext {
1.159 albertel 2311: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2312: my @result=(''.'');
2313: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 2314:
2315: my $nesting =
2316: &Apache::lonxml::set_state('outtext',
2317: &Apache::lonxml::get_state('outtext')+1);
2318: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
2319: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
2320: }
1.159 albertel 2321: return (@result);
1.34 albertel 2322: }
1.159 albertel 2323:
1.34 albertel 2324: sub end_startouttext {
1.326 albertel 2325: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 2326: my $result='';
2327: my $text='';
2328: if ($target eq 'edit') {
1.424 foxr 2329: my $areaid = 'homework_edit_'.$Apache::lonxml::curdepth;
1.326 albertel 2330: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.437 raeburn 2331: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>"
1.438 bisitz 2332: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
1.437 raeburn 2333: .&Apache::edit::deletelist($target,$token)
1.474 raeburn 2334: .'</span></td>'
2335: .'<td align="left"><span id="math_'.$areaid.'" />'
2336: .&Apache::lonhtmlcommon::dragmath_button($areaid,1)
2337: .'<span></td>'
2338: .'<td>'
2339: .&Apache::edit::insertlist($target,$token)
2340: .'</td>'
2341: .'<td align="right" valign="top">' .
2342: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 2343: &Apache::edit::end_row().
1.362 albertel 2344: &Apache::edit::start_spanning_row()."\n".
1.255 www 2345: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 2346: }
2347: if ($target eq 'modified') {
1.219 albertel 2348: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 2349: }
2350: if ($target eq 'tex') {
2351: $result .= '\noindent ';
2352: }
2353: return $result;
1.34 albertel 2354: }
1.159 albertel 2355:
1.34 albertel 2356: sub start_endouttext {
1.159 albertel 2357: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2358: my $result='';
2359: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
2360: if ($target eq "modified") {
2361: $result='<endouttext />'.
1.377 albertel 2362: &Apache::edit::handle_insertafter('startouttext');
2363: }
1.404 albertel 2364:
2365: my $nesting =
2366: &Apache::lonxml::set_state('outtext',
2367: &Apache::lonxml::get_state('outtext')-1);
2368: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
2369: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
2370: &Apache::lonxml::set_state('outtext', 0);
2371: }
1.159 albertel 2372: return $result;
1.34 albertel 2373: }
1.159 albertel 2374:
1.34 albertel 2375: sub end_endouttext {
1.159 albertel 2376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2377: my @result=('','');
2378: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
2379: return (@result);
1.34 albertel 2380: }
1.159 albertel 2381:
1.45 albertel 2382: sub delete_startouttext {
1.326 albertel 2383: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
2384: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 2385: my $text=$$parser['-1']->get_text("/endouttext");
2386: my $ntoken=$$parser['-1']->get_token();
2387: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
2388: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
2389: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
2390: # they did the last time round
2391: &Apache::lonxml::increasedepth($ntoken);
2392: &Apache::lonxml::decreasedepth($ntoken);
2393: return 1;
1.193 www 2394: }
2395:
2396: sub start_simpleeditbutton {
2397: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
2398: my $result='';
1.284 albertel 2399: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 2400: ($target eq 'web') &&
1.330 albertel 2401: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 2402: my $url=$env{'request.noversionuri'};
1.193 www 2403: $url=~s/\?.*$//;
1.367 albertel 2404: my ($symb) = &Apache::lonnet::whichuser();
1.451 bisitz 2405: # Warning makes more sense and is more important on edit screen
1.442 bisitz 2406: # $result='<p class="LC_warning">'
2407: # .&mt('Note: it can take up to 10 minutes for changes to take effect for all users.')
2408: # .&Apache::loncommon::help_open_topic('Caching')
2409: # .'</p>';
1.486 www 2410: $result.=&Apache::loncommon::head_subbox(
2411: &Apache::lonhtmlcommon::start_funclist()
1.451 bisitz 2412: .&Apache::lonhtmlcommon::add_item_funclist(
2413: '<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'
2414: .&mt('Edit').'</a>')
1.486 www 2415: .&Apache::lonhtmlcommon::end_funclist());
1.442 bisitz 2416:
1.193 www 2417: }
2418: return $result;
2419: }
2420:
2421: sub end_simpleeditbutton {
2422: return '';
1.45 albertel 2423: }
1.34 albertel 2424:
1.428 raeburn 2425: sub practice_problem_header {
2426: return '<span class="LC_info"><h3>'.&mt('Practice Problem').'</h3></span>'.
2427: '<span class="LC_info">'.&mt('Submissions are not permanently recorded').
2428: '</span>';
2429: }
2430:
1.479 raeburn 2431: sub randomizetry_problem_header {
2432: my ($problemstatus,$reqtries) = @_;
2433: my ($header,$text);
2434: if ($reqtries > 1) {
2435: $header = &mt('New Problem Variation After Every [quant,_1,Try,Tries]',$reqtries);
2436: if (($problemstatus eq 'no') ||
2437: ($problemstatus eq 'no_feedback_ever')) {
2438: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
2439: } else {
2440: $text = &mt('A new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
2441: }
2442: } else {
2443: $header = &mt('New Problem Variation Each Try');
2444: if (($problemstatus eq 'no') ||
2445: ($problemstatus eq 'no_feedback_ever')) {
2446: $text = &mt('A new variation will be generated after each try until the tries limit is reached.');
2447:
2448: } else {
2449: $text = &mt('A new variation will be generated after each try until correct or tries limit is reached.');
2450: }
2451: }
2452: return '<span class="LC_info"><h3>'.$header.'</h3></span>'.
2453: '<span class="LC_info">'.$text.'</span><hr />';
2454: }
2455:
2456: sub randomizetry_part_header {
2457: my ($problemstatus,$reqtries,$num) = @_;
2458: my ($header,$text);
2459: if ($reqtries eq 'none') {
2460: $header = &mt('No Question Variation');
2461: $text = &mt('For this question there will no new variation after a try.');
2462: } elsif ($reqtries > 1) {
2463: $header = &mt('New Question Variation After Every [quant,_1,Try,Tries]',$reqtries);
2464: if (($problemstatus eq 'no') ||
2465: ($problemstatus eq 'no_feedback_ever')) {
2466: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until the tries limit is reached.',$reqtries);
2467: } else {
2468: $text = &mt('For this question a new variation will be generated after every [quant,_1,try,tries], until correct or tries limit is reached.',$reqtries);
2469: }
2470: } else {
2471: $header = &mt('New Question Variation For Each Try');
2472: if (($problemstatus eq 'no') ||
2473: ($problemstatus eq 'no_feedback_ever')) {
2474: $text = &mt('For this question a new variation will be generated after each try until the tries limit is reached.');
2475: } else {
2476: $text = &mt('For this question a new variation will be generated after each try until correct or tries limit is reached.');
2477: }
2478: }
2479: my $output;
2480: if ($num > 1) {
2481: $output .= '<hr />';
2482: }
2483: $output .= '<span class="LC_info"><h4>'.$header.'</h4></span>'.
2484: '<span class="LC_info">'.$text.'</span><br /><br />';
2485: return $output;
2486: }
2487:
1.1 albertel 2488: 1;
2489: __END__
1.435 jms 2490:
2491: =pod
2492:
2493: =back
2494:
2495: =cut
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