Annotation of loncom/homework/structuretags.pm, revision 1.96
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.96 ! sakharuk 4: # $Id: structuretags.pm,v 1.95 2002/05/24 21:57:38 albertel Exp $
1.74 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.33 albertel 28: # 2/19 Guy
1.44 ng 29: # 6/26/2001 fixed extra web display at end of <web></web> tags
1.60 www 30: # 8/17,8/18,8/20 Gerd Kortemeyer
1.54 www 31:
1.1 albertel 32: package Apache::structuretags;
33:
34: use strict;
35: use Apache::lonnet;
36:
1.78 harris41 37: BEGIN {
1.48 albertel 38: &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
1.37 albertel 39: # &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
1.10 albertel 40: }
41:
42: sub start_web {
1.40 albertel 43: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10 albertel 44: my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
1.19 albertel 45: if ($target eq 'web') {
46: return $bodytext;
47: }
48: return '';
1.10 albertel 49: }
50:
51: sub end_web {
1.44 ng 52: return '';
1.10 albertel 53: }
54:
55: sub start_tex {
1.40 albertel 56: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.10 albertel 57: my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
1.19 albertel 58: if ($target eq 'tex') {
59: return $bodytext
60: }
1.10 albertel 61: return '';
62: }
63:
64: sub end_tex {
1.44 ng 65: return '';
1.9 albertel 66: }
67:
1.48 albertel 68: sub page_start {
69: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.79 albertel 70: my %found;
71: foreach my $taginside ($tagstack) {
72: foreach my $taglookedfor ('html','body','form') {
73: if ($taginside =~ /^$taglookedfor$/i) { $found{$taglookedfor} = 1; }
74: }
75: }
76:
77: my $result;
78: my $head_tag_start;
79: if (!defined($found{'html'})) {
80: $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,
81: $parser,$safeeval);
1.84 matthew 82: $head_tag_start='<head>'.&Apache::lonxml::registerurl(undef,$target);
1.79 albertel 83: }
84: my $body_tag_start;
85: if (!defined($found{'body'})) {
1.80 albertel 86: $body_tag_start='<body onLoad="'.&Apache::lonxml::loadevents().'" '.
1.79 albertel 87: 'onUnload="'.&Apache::lonxml::unloadevents().'" ';
88: my $background=&Apache::lonxml::get_param('background',$parstack,$safeeval);
89: if ($background) {
90: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
91: $background;
92: $body_tag_start.='background="'.$background.'" ';
1.50 albertel 93: } else {
1.79 albertel 94: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
95: if ($bgcolor) {
96: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
97: } else {
98: $body_tag_start.='bgcolor="#ffffff"';
99: }
1.50 albertel 100: }
1.79 albertel 101: $body_tag_start.='>';
1.50 albertel 102: }
1.48 albertel 103: return ($result,$head_tag_start,$body_tag_start);
104: }
105:
1.65 albertel 106: sub initialize_storage {
107: %Apache::lonhomework::results=();
1.66 albertel 108: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.67 albertel 109: if ($ENV{'request.state'} eq 'construct') {
110: %Apache::lonhomework::history=
1.72 albertel 111: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
1.67 albertel 112: my ($temp)=keys %Apache::lonhomework::history ;
113: &Apache::lonxml::debug("Return message of $temp");
114: } else {
115: %Apache::lonhomework::history=
116: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
117: }
1.65 albertel 118: #ignore error conditions
119: my ($temp)=keys %Apache::lonhomework::history ;
120: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
121: }
122:
123: # -------------------------------------------------------------finalize_storage
124: # Stores away the result has to a student's environment
125: # checks form.grade_ for specific values, other wises stores
126: # to the running users environment
127: sub finalize_storage {
128: my $result;
129: my ($temp) = keys %Apache::lonhomework::results;
130: if ( $temp ne '' ) {
1.66 albertel 131: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.67 albertel 132: if ($ENV{'request.state'} eq 'construct') {
1.72 albertel 133: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
134: $ENV{'request.uri'},'',$domain,$name);
1.67 albertel 135: &Apache::lonxml::debug('Construct Store return message:'.$result);
136: } else {
137: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
138: $symb,$courseid,$domain,$name);
139: &Apache::lonxml::debug('Store return message:'.$result);
140: }
1.65 albertel 141: }
142: return $result;
143: }
144:
145: sub checkout_msg {
146: return (<<ENDCHECKOUT);
147: <h2>The resource needs to be checked out</h2>
148: As a resource gets checked out, a unique timestamped ID is given to it, and a
149: permanent record is left in the system.<p />
150: <font color=red>
151: Checking out resources is subject to course policies, and may exclude future
152: credit even if done erroneously.<p />
1.91 albertel 153: </font>
154: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
155: <input type="hidden" name="doescheckout" value="yes" />
156: <input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />
1.65 albertel 157: </form>
158: ENDCHECKOUT
159: }
160:
1.9 albertel 161: sub start_problem {
1.40 albertel 162: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 163:
1.81 albertel 164: # meta is called from lonpublisher, which doesn't uses the normal
165: # lonhomework method of parsing the file which means that inputtags
166: # won't get reset
167: if ( $Apache::inputtags::part ne '' && $target != 'meta' ) {
1.79 albertel 168: &Apache::lonxml::error('Only one problem allowed in a .problem file');
169: my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[-1]);
170: return '';
171: }
1.19 albertel 172: #intialize globals
173: $Apache::inputtags::part='0';
174: @Apache::inputtags::responselist = ();
1.51 albertel 175: @Apache::inputtags::previous=();
1.87 albertel 176: if ($target ne 'analyze') {
177: &initialize_storage();
178: if ($target eq 'web') {
179: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
180: }
181: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
182: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.73 albertel 183: }
1.42 albertel 184: if ($Apache::lonhomework::type eq '') {
1.53 albertel 185: my $uri=$ENV{'request.uri'};
186: if ($uri=~/\.(\w+)$/) {
187: $Apache::lonhomework::type=$1;
188: &Apache::lonxml::debug("Using type of $1");
189: } else {
190: $Apache::lonhomework::type='problem';
191: &Apache::lonxml::debug("Using default type, problem, :$uri:");
192: }
1.42 albertel 193: }
1.58 www 194:
1.67 albertel 195: #added vars to the scripting enviroment
1.19 albertel 196: my $expression='$external::part='.$Apache::inputtags::part.';';
197: &Apache::run::run($expression,$safeeval);
1.22 albertel 198: my $status;
1.55 www 199: my $accessmsg;
1.36 albertel 200:
1.41 albertel 201: #should get back a <html> or the neccesary stuff to start XML/MathML
1.48 albertel 202: my ($result,$head_tag_start,$body_tag_start)=
203: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.96 ! sakharuk 204: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) { $result = '';}
1.67 albertel 205:
1.68 albertel 206: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
1.67 albertel 207: #handle exam checkout
208: if ($Apache::lonhomework::type eq 'exam') {
209: my $token=$Apache::lonhomework::history{"resource.0.outtoken"};
210: if (($ENV{'form.doescheckout'}) && (!$token)) {
211: $token=&Apache::lonxml::maketoken();
212: $Apache::lonhomework::history{"resource.0.outtoken"}=$token;
213: }
214: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
215: }
216:
217: #handle rand seed in construction space
218: my $rndseed;
219: if ($ENV{'request.state'} eq "construct") {
220: $rndseed=$ENV{'form.rndseed'};
221: if (!$rndseed) {
222: $rndseed=time;
223: $ENV{'form.rndseed'}=$rndseed;
1.58 www 224: }
1.67 albertel 225: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
226: }
1.55 www 227: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
1.22 albertel 228: push (@Apache::inputtags::status,$status);
1.24 albertel 229: my $expression='$external::datestatus="'.$status.'";';
230: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
231: &Apache::run::run($expression,$safeeval);
1.54 www 232: if (( $status eq 'CLOSED' ) ||
233: ( $status eq 'UNCHECKEDOUT') ||
234: ( $status eq 'BANNED')) {
1.21 albertel 235: my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
236: if ( $target eq "web" ) {
1.41 albertel 237: $result.= $head_tag_start.'</head>';
1.54 www 238: my $msg=$body_tag_start.
239: '<h1>Not open to be viewed</h1>';
240: if ($status eq 'CLOSED') {
1.55 www 241: $msg.='The problem '.$accessmsg;
1.54 www 242: } elsif ($status eq 'UNCHECKEDOUT') {
1.65 albertel 243: $msg.=&checkout_msg;
1.54 www 244: }
1.67 albertel 245: $result.=$msg.'<br />';
246: }
247: } elsif ($target eq 'web') {
248: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
249: if ($name eq '') {
250: $name=&Apache::lonnet::EXT('resource.title');
251: if ($name eq 'con_lost') { $name = ''; }
1.21 albertel 252: }
1.67 albertel 253: $Apache::lonhomework::name=$name;
254: if ($status eq 'CAN_ANSWER') {
255: # create a page header and exit
256: $result.="$head_tag_start<title>$name</title></head>\n
1.41 albertel 257: $body_tag_start\n
1.36 albertel 258: <form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">".
259: '<input type="hidden" name="submitted" value="yes" />';
1.67 albertel 260: if ($ENV{'request.state'} eq "construct") {
261: $result.=
262: '<input type="hidden" name="problemmode" value="View" />
263: <input type="submit" name="problemmode" value="Edit" />
1.73 albertel 264: <input type="submit" name="problemmode" value="EditXML" />
1.67 albertel 265: Random Seed:<input type="text" name="rndseed" width="10" value="'.
1.72 albertel 266: $rndseed.'" />
1.73 albertel 267: <input type="submit" name="changerandseed" value="Change" />
1.72 albertel 268: <input type="submit" name="resetdata" value="Reset Submissions" />
1.93 albertel 269: <input type="checkbox" name="showallfoils" ';
270: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
271: $result.= ' /> Show All Foils
1.72 albertel 272: <hr />';
1.67 albertel 273: }
274: # if we are viewing someone else preserve that info
275: if (defined $ENV{'form.grade_symb'}) {
276: foreach my $field ('symb','courseid','domain','username') {
277: $result .= '<input type="hidden" name="grade_'.$field.
278: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
279: }
1.65 albertel 280: }
1.67 albertel 281: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
282: || $status eq 'CLOSED') {
283: $result.=$head_tag_start.
284: "<title>$name</title></head>\n$body_tag_start\n";
1.65 albertel 285: }
1.22 albertel 286: }
1.67 albertel 287: } elsif ($target eq 'edit') {
1.41 albertel 288: $result.=$head_tag_start."</head>".$body_tag_start.
1.67 albertel 289: '<form name="lonhomework" method="POST" action="'.
290: $ENV{'request.uri'}.'">
1.41 albertel 291: <input type="hidden" name="submitted" value="edit" />
292: <input type="hidden" name="problemmode" value="Edit" />
293: <input type="submit" name="problemmode" value="View" />
1.73 albertel 294: <input type="submit" name="problemmode" value="EditXML" />
1.41 albertel 295: <input type="submit" name="Undo" value="undo" /> <hr />
1.49 albertel 296: <input type="submit" name="submit" value="Submit Changes" /><br />
1.41 albertel 297: ';
1.39 albertel 298: my $temp=&Apache::edit::insertlist($target,$token);
1.36 albertel 299: $result.=$temp;
1.67 albertel 300: } elsif ($target eq 'modified') {
1.37 albertel 301: $result=$token->[4];
302: $result.=&Apache::edit::handle_insert();
1.77 sakharuk 303: } elsif ($target eq 'tex') {
1.96 ! sakharuk 304: if (not $ENV{'request.symb'} =~ m/\.page_/) {
! 305: $result .= '\begin{document} ';
! 306: } else {
! 307: $result .= '\begin{minipage}{\minipagewidth} ';
! 308: }
1.67 albertel 309: } else {
310: # page_start returned a starting result, delete it if we don't need it
311: $result = '';
1.37 albertel 312: }
1.67 albertel 313: return $result;
1.9 albertel 314: }
315:
316: sub end_problem {
1.40 albertel 317: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.16 albertel 318: my $result='';
1.24 albertel 319: my $status=$Apache::inputtags::status['-1'];
1.68 albertel 320: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ) {
1.83 albertel 321: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.19 albertel 322: # if part is zero, no <part>s existed, so we need to the grading
323: &Apache::inputtags::grade;
1.91 albertel 324: } elsif ( $target eq 'web' && $Apache::inputtags::part eq '0' &&
325: $status ne 'UNCHECKEDOUT') {
1.19 albertel 326: # if part is zero, no <part>s existed, so we need show the current
327: # grading status
1.20 albertel 328: $result.= &Apache::inputtags::gradestatus($Apache::inputtags::part);
1.41 albertel 329: }
1.68 albertel 330: if (
331: ($target eq 'web' && ($ENV{'request.state'} ne 'construct')) ||
332: ($target eq 'answer')
333: ) {
1.22 albertel 334: if ($status eq 'CAN_ANSWER') {
335: $result.="</form></body>\n";
1.91 albertel 336: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
337: $status eq 'UNCHECKEDOUT' ) {
1.41 albertel 338: $result.="</body>\n";
339: }
1.50 albertel 340: $result.=&Apache::lonxml::xmlend();
1.22 albertel 341: }
1.65 albertel 342: if ($target eq 'grade') {
343: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
344: &finalize_storage();
345: }
346: } elsif ($target eq 'meta') {
1.18 albertel 347: if ($Apache::inputtags::part eq '0') {
1.16 albertel 348: $result=&Apache::response::mandatory_part_meta;
349: }
1.65 albertel 350: } elsif ($target eq 'edit') {
1.34 albertel 351: &Apache::lonxml::debug("in end_problem with $target, edit");
1.48 albertel 352: $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
1.77 sakharuk 353: } elsif ($target eq 'tex') {
1.96 ! sakharuk 354: $result .= '\vskip 0.5mm\noindent\makebox[9.0cm][b]{\hrulefill}';
! 355: if (not $ENV{'request.symb'} =~ m/\.page_/) {
! 356: $result .= '\end{document} ';
! 357: } else {
! 358: $result .= '\end{minipage} ';
! 359: }
1.48 albertel 360: }
361: return $result;
362: }
363:
364: sub start_library {
365: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
366: my ($result,$head_tag_start,$body_tag_start)=
367: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
368: if ($target eq 'edit') {
369: $result.=$head_tag_start."</head>".$body_tag_start.
370: '<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'">
371: <input type="hidden" name="submitted" value="edit" />
372: <input type="hidden" name="problemmode" value="Edit" />
373: <input type="submit" name="problemmode" value="View" />
374: <input type="submit" name="Undo" value="undo" /> <hr />
375: ';
376: my $temp=&Apache::edit::insertlist($target,$token);
377: $result.=$temp;
378: return $result;
379: }
380: if ($target eq 'modified') {
381: $result=$token->[4];
382: $result.=&Apache::edit::handle_insert();
383: return $result;
384: }
385: return '';
386: }
387:
388: sub end_library {
389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
390: my $result='';
391: if ($target eq 'edit') {
1.34 albertel 392: $result='<br /><input type="submit" name="submit" value="Submit Changes" />';
393: }
1.16 albertel 394: return $result;
1.1 albertel 395: }
396:
397: sub start_block {
1.40 albertel 398: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.1 albertel 399:
1.68 albertel 400: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
1.38 albertel 401: my $code = @$parstack[$#$parstack];
402: $code =~ s/\"//g;
403: $code .=';return $condition;';
404: # print "<br />$code<br />";
405: my $result = &Apache::run::run($code,$safeeval);
406: &Apache::lonxml::debug("block :$code: returned :$result:");
407: if ( ! $result ) {
408: my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]);
409: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[$#$parser]");
410: }
1.1 albertel 411: }
412: return "";
413: }
414:
415: sub end_block {
1.38 albertel 416: return '';
1.4 tsai 417: }
418:
419: sub start_while {
1.40 albertel 420: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.4 tsai 421:
422: my $code = @$parstack[$#$parstack];
423: $code =~ s/\"//g;
424: $code .=';return $condition;';
425:
1.5 tsai 426: push( @Apache::structuretags::whileconds, $code);
1.4 tsai 427: my $result = &Apache::run::run($code,$safeeval);
428: my $bodytext=$$parser[$#$parser]->get_text("/while");
1.5 tsai 429: push( @Apache::structuretags::whilebody, $bodytext);
430: if ( $result ) {
1.8 albertel 431: &Apache::lonxml::newparser($parser,\$bodytext);
1.4 tsai 432: }
433: return "";
434: }
435:
436: sub end_while {
1.40 albertel 437: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.5 tsai 438: my $code = pop @Apache::structuretags::whileconds;
439: my $bodytext = pop @Apache::structuretags::whilebody;
440: my $result = &Apache::run::run($code,$safeeval);
441: if ( $result ) {
1.8 albertel 442: &Apache::lonxml::newparser($parser,\$bodytext);
1.5 tsai 443: }
444: return "";
1.1 albertel 445: }
1.6 tsai 446:
447: # <randomlist>
448: # <tag1>..</tag1>
449: # <tag2>..</tag2>
450: # <tag3>..</tag3>
451: # ...
452: # </randomlist>
453: sub start_randomlist {
1.40 albertel 454: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.86 albertel 455: my $result;
1.71 albertel 456: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web') {
457: my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);
458: my $b_parser= HTML::TokeParser->new(\$body);
459: my $b_tok;
460: my @randomlist;
461: my $list_item;
462: while($b_tok = $b_parser->get_token() ) {
463: if($b_tok->[0] eq 'S') { # start tag
464: # get content of the tag until matching end tag
465: # get all text upto the matching tag
466: # and push the content into @randomlist
467: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
468: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
469: push(@randomlist,$list_item);
470: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>";
471: }
472: if($b_tok->[0] eq 'T') { # text
473: # what to do with text in between tags?
474: # print "<b>TEXT $b_tok->[1]</b><br />";
475: }
476: # if($b_tok->[0] eq 'E') { # end tag, should not happen
477: # print "<b>END-TAG $b_tok->[1]</b><br />";
478: # }
479: }
480: my @idx_arr = (0 .. $#randomlist);
481: &Apache::structuretags::shuffle(\@idx_arr);
482: my $bodytext = '';
1.86 albertel 483: my $show=$#randomlist;
484: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
485: $showarg--;
486: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
487: for(0 .. $show) {
1.71 albertel 488: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1.6 tsai 489: }
1.71 albertel 490: &Apache::lonxml::newparser($parser,\$bodytext);
1.86 albertel 491: } elsif ($target eq 'edit' ) {
492: $result .= &Apache::edit::tag_start($target,$token);
493: $result .= &Apache::edit::text_arg('Maximum Tags to Show:','show',$token,5);
494: $result .= &Apache::edit::end_row().&Apache::edit::start_spanning_row();
495: } elsif ($target eq 'modified' ) {
496: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
497: 'show');
498: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.7 tsai 499: }
1.86 albertel 500: return $result;
1.7 tsai 501: }
502:
503: sub shuffle {
504: my $a=shift;
505: my $i;
1.70 albertel 506: if (defined(@$a)) {
507: &Apache::response::setrandomnumber();
508: for($i=@$a;--$i;) {
509: my $j=int rand($i+1);
510: next if $i == $j;
511: @$a[$i,$j] = @$a[$j,$i];
512: }
1.7 tsai 513: }
1.6 tsai 514: }
515:
516: sub end_randomlist {
1.86 albertel 517: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
518: my $result;
519: if ($target eq 'edit' ) {
520: $result=&Apache::edit::tag_end($target,$token,'End Randomly Parsed Block');
521: }
522: return $result;
1.6 tsai 523: }
524:
1.11 albertel 525: sub start_part {
1.40 albertel 526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.95 albertel 527: my $result='';
1.39 albertel 528: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.47 albertel 529: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1.14 albertel 530: $Apache::inputtags::part=$id;
1.18 albertel 531: @Apache::inputtags::responselist = ();
1.51 albertel 532: @Apache::inputtags::previous=();
1.15 www 533: if ($target eq 'meta') {
1.16 albertel 534: return &Apache::response::mandatory_part_meta;
1.95 albertel 535: } elsif ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.55 www 536: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1.23 albertel 537: push (@Apache::inputtags::status,$status);
538: my $expression='$external::datestatus="'.$status.'";';
539: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
540: &Apache::run::run($expression,$safeeval);
541: if ( $status eq 'CLOSED' ) {
1.21 albertel 542: my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]);
543: if ( $target eq "web" ) {
1.95 albertel 544: $result="<br />Part is not open to be viewed. It $accessmsg<br />";
545: } elsif ( $target eq 'tex' ) {
546: $result="\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\";
547: }
548: } else {
549: if ($target eq 'tex') {
550: $result='\vskip 0 mm';
1.21 albertel 551: }
552: }
1.15 www 553: }
1.95 albertel 554: return $result;
1.11 albertel 555: }
556:
557: sub end_part {
1.40 albertel 558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.18 albertel 559: &Apache::lonxml::debug("in end_part $target ");
1.28 albertel 560: my $status=$Apache::inputtags::status['-1'];
1.23 albertel 561: pop @Apache::inputtags::status;
1.19 albertel 562: if ( $target eq 'meta' ) { return ''; }
1.37 albertel 563: if ( $target eq 'grade' && $status eq 'CAN_ANSWER') {
564: return &Apache::inputtags::grade;
1.28 albertel 565: }
1.37 albertel 566: if ($target eq 'web') {
567: return &Apache::inputtags::gradestatus($Apache::inputtags::part);
568: }
569: return '';
1.11 albertel 570: }
1.1 albertel 571:
1.25 albertel 572: sub start_preduedate {
1.40 albertel 573: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.68 albertel 574: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
1.29 albertel 575: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
576: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' ) {
1.26 albertel 577: &Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]);
1.24 albertel 578: }
579: }
580: return '';
581: }
582:
1.25 albertel 583: sub end_preduedate {
1.24 albertel 584: return '';
585: }
586:
1.25 albertel 587: sub start_postanswerdate {
1.40 albertel 588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 589: if ($target eq 'web' || $target eq 'grade') {
1.24 albertel 590: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.26 albertel 591: &Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]);
1.24 albertel 592: }
593: }
594: return '';
595: }
596:
1.25 albertel 597: sub end_postanswerdate {
1.24 albertel 598: return '';
599: }
600:
1.25 albertel 601: sub start_notsolved {
1.40 albertel 602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.68 albertel 603: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
1.24 albertel 604: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
605: &Apache::lonxml::debug("not solved has :$gradestatus:");
606: if ($gradestatus =~ /^correct/) {
607: &Apache::lonxml::debug("skipping");
1.26 albertel 608: &Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]);
1.24 albertel 609: }
610: }
611: return '';
612: }
613:
1.25 albertel 614: sub end_notsolved {
1.24 albertel 615: return '';
616: }
617:
618: sub start_solved {
1.40 albertel 619: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.68 albertel 620: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
1.24 albertel 621: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
622: if ($gradestatus !~ /^correct/) {
623: &Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]);
624: }
625: }
626: return '';
627: }
628:
629: sub end_solved {
630: return '';
631: }
1.34 albertel 632:
633: sub start_startouttext {
1.40 albertel 634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 635: my @result=(''.'');
636: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
637: return (@result);
1.34 albertel 638: }
639: sub end_startouttext {
1.40 albertel 640: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 641: my $result='';
1.35 albertel 642: my $text='';
643:
1.34 albertel 644: if ($target eq 'edit') {
1.70 albertel 645: $text=&Apache::lonxml::get_all_text("endouttext",$$parser[-1]);
1.43 albertel 646: $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
1.42 albertel 647: <td>Delete:".
648: &Apache::edit::deletelist($target,$token)
1.82 albertel 649: ."</td>
1.42 albertel 650: <td>".
651: &Apache::edit::insertlist($target,$token).
1.82 albertel 652: &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n".
653: &Apache::edit::editfield($token->[1],$text,"",50,4);
1.35 albertel 654: }
655: if ($target eq 'modified') {
656: $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
657: $result='<startouttext />'.&Apache::edit::modifiedfield();
1.85 sakharuk 658: }
659: if ($target eq 'tex') {
660: $result .= '\noindent ';
1.34 albertel 661: }
662: return $result;
663: }
664: sub start_endouttext {
1.40 albertel 665: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 666: my $result='';
1.43 albertel 667: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1.35 albertel 668: if ($target eq "modified") { $result='<endouttext />'; }
1.34 albertel 669: return $result;
670: }
671: sub end_endouttext {
1.40 albertel 672: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 673: my @result=('','');
674: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
675: return (@result);
1.34 albertel 676: }
1.45 albertel 677: sub delete_startouttext {
678: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
679: # my $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']);
680: my $text=$$parser['-1']->get_text("/endouttext");
1.69 albertel 681: my $ntoken=$$parser['-1']->get_token();
682: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
683: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1.45 albertel 684: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
685: # they did the last time round
1.69 albertel 686: &Apache::lonxml::increasedepth($ntoken);
687: &Apache::lonxml::decreasedepth($ntoken);
1.45 albertel 688: return 1;
689: }
1.34 albertel 690:
1.1 albertel 691: 1;
692: __END__
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