Annotation of loncom/homework/structuretags.pm, revision 1.155
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.155 ! albertel 4: # $Id: structuretags.pm,v 1.154 2003/03/06 21:05:27 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:
1.133 sakharuk 32:
1.1 albertel 33: package Apache::structuretags;
34:
35: use strict;
36: use Apache::lonnet;
1.101 sakharuk 37: use Apache::File();
1.147 www 38: use Apache::lonmenu;
1.1 albertel 39:
1.78 harris41 40: BEGIN {
1.48 albertel 41: &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
1.37 albertel 42: # &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
1.10 albertel 43: }
44:
45: sub start_web {
1.40 albertel 46: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.146 albertel 47: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
1.19 albertel 48: if ($target eq 'web') {
49: return $bodytext;
50: }
51: return '';
1.10 albertel 52: }
53:
54: sub end_web {
1.44 ng 55: return '';
1.10 albertel 56: }
57:
58: sub start_tex {
1.40 albertel 59: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.146 albertel 60: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
1.19 albertel 61: if ($target eq 'tex') {
1.102 sakharuk 62: return $bodytext.' ';
1.19 albertel 63: }
1.10 albertel 64: return '';
65: }
66:
67: sub end_tex {
1.44 ng 68: return '';
1.9 albertel 69: }
70:
1.48 albertel 71: sub page_start {
72: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.79 albertel 73: my %found;
74: foreach my $taginside ($tagstack) {
75: foreach my $taglookedfor ('html','body','form') {
76: if ($taginside =~ /^$taglookedfor$/i) { $found{$taglookedfor} = 1; }
77: }
78: }
79:
80: my $result;
81: my $head_tag_start;
82: if (!defined($found{'html'})) {
83: $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,
84: $parser,$safeeval);
1.147 www 85: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
1.79 albertel 86: }
87: my $body_tag_start;
88: if (!defined($found{'body'})) {
1.147 www 89: $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
90: 'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
1.79 albertel 91: my $background=&Apache::lonxml::get_param('background',$parstack,$safeeval);
92: if ($background) {
93: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
94: $background;
95: $body_tag_start.='background="'.$background.'" ';
1.50 albertel 96: } else {
1.79 albertel 97: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
98: if ($bgcolor) {
99: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
100: } else {
101: $body_tag_start.='bgcolor="#ffffff"';
102: }
1.50 albertel 103: }
1.152 www 104: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
1.134 albertel 105: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
106: my ($symb)=&Apache::lonxml::whichuser();
107: if ($symb eq '') {
108: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
109: $help="Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored $help<br />";
110: $body_tag_start.=$help;
111: }
112: }
1.50 albertel 113: }
1.105 albertel 114: my $form_tag_start;
115: if (!defined($found{'form'})) {
116: $form_tag_start='<form name="lonhomework" method="POST" action="'.
117: $ENV{'request.uri'}.'">';
118: }
119: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
120: }
121:
1.141 matthew 122: #use Time::HiRes();
1.105 albertel 123: sub get_resource_name {
124: my ($parstack,$safeeval)=@_;
1.138 albertel 125: my $name=&Apache::lonnet::gettitle();
126: if ($name eq '') {
1.105 albertel 127: $name=&Apache::lonnet::EXT('resource.title');
128: if ($name eq 'con_lost') { $name = ''; }
129: }
130: $Apache::lonhomework::name=$name;
131: return $name;
132: }
133:
134: sub setup_rndseed {
135: my ($safeeval)=@_;
136: my $rndseed;
137: if ($ENV{'request.state'} eq "construct") {
138: $rndseed=$ENV{'form.rndseed'};
139: if (!$rndseed) {
140: $rndseed=time;
141: $ENV{'form.rndseed'}=$rndseed;
142: }
1.136 albertel 143: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.105 albertel 144: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
145: }
146: return $rndseed;
147: }
148:
149: sub problem_edit_header {
150: return '<input type="hidden" name="submitted" value="edit" />
151: <input type="hidden" name="problemmode" value="Edit" />
152: <input type="submit" name="problemmode" value="Discard Edits and View" />
153: <input type="submit" name="problemmode" value="EditXML" />
154: <input type="submit" name="Undo" value="undo" /> <hr />
1.135 www 155: <input type="submit" name="submit" value="Submit Changes and Edit" />
156: <input type="submit" name="submit" value="Submit Changes and View" /><br /><p> </p><table border="0"><tr><td bgcolor="#DDDDDD">
1.105 albertel 157: ';
158: }
159:
160: sub problem_edit_footer {
1.135 www 161: return '</td></tr></table><br /><input type="submit" name="submit" value="Submit Changes and Edit" />
1.105 albertel 162: <input type="submit" name="submit" value="Submit Changes and View" />';
163: }
164:
165: sub problem_web_to_edit_header {
166: my ($rndseed)=@_;
167: my $result.='<input type="hidden" name="problemmode" value="View" />
168: <input type="submit" name="problemmode" value="Edit" />
169: <input type="submit" name="problemmode" value="EditXML" />
170: Random Seed:<input type="text" name="rndseed" width="10" value="'.
171: $rndseed.'" />
172: <input type="submit" name="changerandseed" value="Change" />
173: <input type="submit" name="resetdata" value="Reset Submissions" />
174: <input type="checkbox" name="showallfoils" ';
175: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
1.115 albertel 176: $result.= ' /> Show All Foils
1.105 albertel 177: <hr />';
1.126 albertel 178: my $numtoanalyze=$ENV{'form.numtoanalyze'};
179: if (!$numtoanalyze) { $numtoanalyze=100; }
1.136 albertel 180: $result.= '<input type="submit" name="problemmode" value="Answer Distribution" />
181: <input type="text" name="numtoanalyze" value="'.
182: $numtoanalyze.'" size="5" /> <hr />';
1.128 albertel 183: return $result;
1.48 albertel 184: }
185:
1.65 albertel 186: sub initialize_storage {
187: %Apache::lonhomework::results=();
1.66 albertel 188: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.67 albertel 189: if ($ENV{'request.state'} eq 'construct') {
190: %Apache::lonhomework::history=
1.72 albertel 191: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
1.67 albertel 192: my ($temp)=keys %Apache::lonhomework::history ;
193: &Apache::lonxml::debug("Return message of $temp");
194: } else {
195: %Apache::lonhomework::history=
196: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
197: }
1.65 albertel 198: #ignore error conditions
199: my ($temp)=keys %Apache::lonhomework::history ;
200: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
201: }
202:
203: # -------------------------------------------------------------finalize_storage
204: # Stores away the result has to a student's environment
205: # checks form.grade_ for specific values, other wises stores
206: # to the running users environment
207: sub finalize_storage {
208: my $result;
209: my ($temp) = keys %Apache::lonhomework::results;
210: if ( $temp ne '' ) {
1.66 albertel 211: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
1.67 albertel 212: if ($ENV{'request.state'} eq 'construct') {
1.72 albertel 213: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
214: $ENV{'request.uri'},'',$domain,$name);
1.67 albertel 215: &Apache::lonxml::debug('Construct Store return message:'.$result);
216: } else {
217: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
218: $symb,$courseid,$domain,$name);
219: &Apache::lonxml::debug('Store return message:'.$result);
220: }
1.65 albertel 221: }
222: return $result;
223: }
224:
225: sub checkout_msg {
226: return (<<ENDCHECKOUT);
227: <h2>The resource needs to be checked out</h2>
228: As a resource gets checked out, a unique timestamped ID is given to it, and a
229: permanent record is left in the system.<p />
230: <font color=red>
231: Checking out resources is subject to course policies, and may exclude future
232: credit even if done erroneously.<p />
1.91 albertel 233: </font>
234: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
235: <input type="hidden" name="doescheckout" value="yes" />
236: <input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />
1.65 albertel 237: </form>
238: ENDCHECKOUT
239: }
240:
1.9 albertel 241: sub start_problem {
1.40 albertel 242: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 243:
1.155 ! albertel 244: $Apache::lonhomework::parsing_a_problem=1;
1.81 albertel 245: # meta is called from lonpublisher, which doesn't uses the normal
246: # lonhomework method of parsing the file which means that inputtags
247: # won't get reset
248: if ( $Apache::inputtags::part ne '' && $target != 'meta' ) {
1.79 albertel 249: &Apache::lonxml::error('Only one problem allowed in a .problem file');
1.146 albertel 250: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.79 albertel 251: return '';
252: }
1.19 albertel 253: #intialize globals
254: $Apache::inputtags::part='0';
255: @Apache::inputtags::responselist = ();
1.51 albertel 256: @Apache::inputtags::previous=();
1.151 sakharuk 257: $Apache::structuretags::printanswer='No';
1.87 albertel 258: if ($target ne 'analyze') {
259: &initialize_storage();
260: if ($target eq 'web') {
261: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
262: }
263: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
264: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.73 albertel 265: }
1.42 albertel 266: if ($Apache::lonhomework::type eq '') {
1.53 albertel 267: my $uri=$ENV{'request.uri'};
268: if ($uri=~/\.(\w+)$/) {
269: $Apache::lonhomework::type=$1;
270: &Apache::lonxml::debug("Using type of $1");
271: } else {
272: $Apache::lonhomework::type='problem';
273: &Apache::lonxml::debug("Using default type, problem, :$uri:");
274: }
1.42 albertel 275: }
1.58 www 276:
1.67 albertel 277: #added vars to the scripting enviroment
1.19 albertel 278: my $expression='$external::part='.$Apache::inputtags::part.';';
279: &Apache::run::run($expression,$safeeval);
1.22 albertel 280: my $status;
1.55 www 281: my $accessmsg;
1.36 albertel 282:
1.41 albertel 283: #should get back a <html> or the neccesary stuff to start XML/MathML
1.105 albertel 284: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
1.48 albertel 285: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.96 sakharuk 286: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) { $result = '';}
1.67 albertel 287:
1.136 albertel 288: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
1.98 sakharuk 289: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.67 albertel 290: #handle exam checkout
291: if ($Apache::lonhomework::type eq 'exam') {
292: my $token=$Apache::lonhomework::history{"resource.0.outtoken"};
293: if (($ENV{'form.doescheckout'}) && (!$token)) {
294: $token=&Apache::lonxml::maketoken();
295: $Apache::lonhomework::history{"resource.0.outtoken"}=$token;
296: }
297: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
298: }
299:
300: #handle rand seed in construction space
1.105 albertel 301: my $rndseed=&setup_rndseed($safeeval);
1.55 www 302: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
1.22 albertel 303: push (@Apache::inputtags::status,$status);
1.24 albertel 304: my $expression='$external::datestatus="'.$status.'";';
305: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
306: &Apache::run::run($expression,$safeeval);
1.132 albertel 307: &Apache::lonxml::debug("Got $status");
1.54 www 308: if (( $status eq 'CLOSED' ) ||
309: ( $status eq 'UNCHECKEDOUT') ||
1.142 albertel 310: ( $status eq 'BANNED') ||
311: ( $status eq 'UNAVAILABLE')) {
1.132 albertel 312: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
1.21 albertel 313: if ( $target eq "web" ) {
1.41 albertel 314: $result.= $head_tag_start.'</head>';
1.142 albertel 315: my $msg=$body_tag_start;
316: if ($status eq 'UNAVAILABLE') {
317: $result.='<h1>Unable to determine if this resource is open due to network problems. Please try again later.</h1>';
318: } else {
319: $result.='<h1>Not open to be viewed</h1>';
320: }
1.54 www 321: if ($status eq 'CLOSED') {
1.55 www 322: $msg.='The problem '.$accessmsg;
1.54 www 323: } elsif ($status eq 'UNCHECKEDOUT') {
1.65 albertel 324: $msg.=&checkout_msg;
1.54 www 325: }
1.67 albertel 326: $result.=$msg.'<br />';
1.117 sakharuk 327: } elsif ($target eq 'tex') {
1.151 sakharuk 328: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
1.142 albertel 329: if ($status eq 'UNAVAILABLE') {
330: $result.='Unable to determine if this resource is open due to network problems. Please try again later.\vskip 0 mm ';
331: } else {
332: $result.="Problem is not open to be viewed. It $accessmsg \\vskip 0 mm ";
333: }
334: }
1.67 albertel 335: } elsif ($target eq 'web') {
1.105 albertel 336: my $name= &get_resource_name($parstack,$safeeval);
1.67 albertel 337: if ($status eq 'CAN_ANSWER') {
338: # create a page header and exit
1.105 albertel 339: $result.="$head_tag_start<title>$name</title></head>
340: $body_tag_start \n $form_tag_start".
1.36 albertel 341: '<input type="hidden" name="submitted" value="yes" />';
1.67 albertel 342: if ($ENV{'request.state'} eq "construct") {
1.105 albertel 343: $result.= &problem_web_to_edit_header($rndseed);
1.67 albertel 344: }
345: # if we are viewing someone else preserve that info
346: if (defined $ENV{'form.grade_symb'}) {
347: foreach my $field ('symb','courseid','domain','username') {
348: $result .= '<input type="hidden" name="grade_'.$field.
349: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
350: }
1.65 albertel 351: }
1.67 albertel 352: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
1.142 albertel 353: || $status eq 'CLOSED' || $status eq 'UNAVALAILABLE') {
1.67 albertel 354: $result.=$head_tag_start.
355: "<title>$name</title></head>\n$body_tag_start\n";
1.65 albertel 356: }
1.99 sakharuk 357: } elsif ($target eq 'tex') {
1.103 sakharuk 358: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
359: if ($name eq '') {
360: $name=&Apache::lonnet::EXT('resource.title');
361: if ($name eq 'con_lost') { $name = ''; }
362: }
363: $Apache::lonhomework::name=$name;
1.99 sakharuk 364: my $id = $Apache::inputtags::part;
1.151 sakharuk 365: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
366: my $allkeys = &Apache::lonnet::metadata($ENV{'request.uri'},'keys');
367: my @allkeys = split /,/,$allkeys;
368: my $allow_print_points = 0;
369: foreach my $partial_key (@allkeys) {
370: if ($partial_key=~m/weight/) {
371: $allow_print_points++;
372: }
373: }
1.99 sakharuk 374: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
375: $duedate = POSIX::strftime("%c",localtime($duedate));
1.101 sakharuk 376: my $temp_file;
377: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
378: if (-e $filename) {
379: $temp_file = Apache::File->new($filename);
1.99 sakharuk 380: } else {
1.101 sakharuk 381: $temp_file = Apache::File->new('>>'.$filename);
382: }
383: my @due_file_content = <$temp_file>;
384: my $due_file_content = $due_file_content[$#due_file_content];
385: chomp $due_file_content;
1.153 sakharuk 386: my $name_of_resourse= &get_resource_name($parstack,$safeeval);
1.101 sakharuk 387: if ($due_file_content ne $duedate) {
388: $temp_file = Apache::File->new('>'.$filename);
1.104 sakharuk 389: print $temp_file "$duedate\n";
1.101 sakharuk 390: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.151 sakharuk 391: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
1.153 sakharuk 392: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent \begin{minipage}{\textwidth}';
1.104 sakharuk 393: } else {
1.153 sakharuk 394: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent\begin{minipage}{\textwidth}';
1.151 sakharuk 395: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.104 sakharuk 396: }
1.101 sakharuk 397: } else {
1.117 sakharuk 398: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.101 sakharuk 399: }
400: } else {
401: if (not $ENV{'request.symb'} =~ m/\.page_/) {
1.153 sakharuk 402: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent\begin{minipage}{\textwidth}';
1.151 sakharuk 403: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.101 sakharuk 404: } else {
1.117 sakharuk 405: $result .= '\vskip 1mm \\\\\\\\';
1.101 sakharuk 406: }
1.99 sakharuk 407: }
408: }
1.67 albertel 409: } elsif ($target eq 'edit') {
1.105 albertel 410: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
411: &problem_edit_header();
1.39 albertel 412: my $temp=&Apache::edit::insertlist($target,$token);
1.36 albertel 413: $result.=$temp;
1.67 albertel 414: } elsif ($target eq 'modified') {
1.37 albertel 415: $result=$token->[4];
416: $result.=&Apache::edit::handle_insert();
1.67 albertel 417: } else {
418: # page_start returned a starting result, delete it if we don't need it
419: $result = '';
1.37 albertel 420: }
1.67 albertel 421: return $result;
1.9 albertel 422: }
423:
424: sub end_problem {
1.40 albertel 425: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.16 albertel 426: my $result='';
1.24 albertel 427: my $status=$Apache::inputtags::status['-1'];
1.106 sakharuk 428: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex') {
1.144 albertel 429: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' && $status eq 'CAN_ANSWER' ) {
1.19 albertel 430: # if part is zero, no <part>s existed, so we need to the grading
431: &Apache::inputtags::grade;
1.106 sakharuk 432: } elsif ( ($target eq 'web' || $target eq 'tex') && $Apache::inputtags::part eq '0' &&
1.91 albertel 433: $status ne 'UNCHECKEDOUT') {
1.19 albertel 434: # if part is zero, no <part>s existed, so we need show the current
435: # grading status
1.122 sakharuk 436: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
1.119 sakharuk 437: if ($Apache::lonhomework::type ne 'exam') {$result.= $gradestatus;}
1.41 albertel 438: }
1.68 albertel 439: if (
1.112 albertel 440: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
441: ($target eq 'answer') || ($target eq 'tex')
1.68 albertel 442: ) {
1.22 albertel 443: if ($status eq 'CAN_ANSWER') {
1.106 sakharuk 444: if ($target ne 'tex') {
445: $result.="</form></body>\n";
446: }
1.91 albertel 447: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
448: $status eq 'UNCHECKEDOUT' ) {
1.106 sakharuk 449: if ($target ne 'tex') {
450: $result.="</body>\n";
451: }
452: }
1.140 albertel 453: if ($target eq 'web') {
1.106 sakharuk 454: $result.=&Apache::lonxml::xmlend();
1.140 albertel 455: } elsif ($target eq 'tex') {
456: $result .= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
457: if (not $ENV{'request.symb'} =~ m/\.page_/) {
458: $result .= '\end{minipage}\end{document} ';
459: } else {
460: $result .= '';
461: }
1.41 albertel 462: }
1.22 albertel 463: }
1.65 albertel 464: if ($target eq 'grade') {
465: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
466: &finalize_storage();
1.145 albertel 467: }
468: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct') ) {
469: $result.='</html>'; #normally we get it from xmlend, but in CSTR
470: # we always show answer mode too.
1.65 albertel 471: }
472: } elsif ($target eq 'meta') {
1.18 albertel 473: if ($Apache::inputtags::part eq '0') {
1.16 albertel 474: $result=&Apache::response::mandatory_part_meta;
475: }
1.65 albertel 476: } elsif ($target eq 'edit') {
1.34 albertel 477: &Apache::lonxml::debug("in end_problem with $target, edit");
1.105 albertel 478: $result = &problem_edit_footer();
1.142 albertel 479: }
1.155 ! albertel 480:
! 481: undef(%Apache::lonhomework::history);
! 482: undef(%Apache::lonhomework::results);
! 483: undef($Apache::inputtags::part);
! 484: undef($Apache::lonhomework::parsing_a_problem);
! 485:
1.48 albertel 486: return $result;
487: }
488:
1.108 albertel 489:
1.48 albertel 490: sub start_library {
491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.109 albertel 492: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
493:
1.48 albertel 494: if ($target eq 'edit') {
1.109 albertel 495: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
496: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.105 albertel 497: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
498: &problem_edit_header();
1.48 albertel 499: my $temp=&Apache::edit::insertlist($target,$token);
500: $result.=$temp;
1.105 albertel 501: } elsif ($target eq 'modified') {
1.48 albertel 502: $result=$token->[4];
503: $result.=&Apache::edit::handle_insert();
1.110 albertel 504: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
505: $ENV{'request.state'} eq "construct" ) {
1.109 albertel 506: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
507: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.105 albertel 508: my $name=&get_resource_name($parstack,$safeeval);
509: my $rndseed=&setup_rndseed($safeeval);
510: $result.="$head_tag_start<title>$name</title></head>
511: $body_tag_start \n $form_tag_start".
512: '<input type="hidden" name="submitted" value="yes" />';
513: $result.=&problem_web_to_edit_header($rndseed);
1.48 albertel 514: }
1.105 albertel 515: return $result;
1.48 albertel 516: }
517:
518: sub end_library {
519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
520: my $result='';
521: if ($target eq 'edit') {
1.105 albertel 522: $result=&problem_edit_footer();
1.114 albertel 523: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
524: $ENV{'request.state'} eq "construct") {
1.105 albertel 525: $result.='</form></body>'.&Apache::lonxml::xmlend();
1.34 albertel 526: }
1.16 albertel 527: return $result;
1.1 albertel 528: }
529:
530: sub start_block {
1.131 albertel 531: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
532:
533: my $result;
1.1 albertel 534:
1.131 albertel 535: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
536: $target eq 'tex' || $target eq 'analyze') {
537: my $code = @$parstack[$#$parstack];
538: if ($code) {
539: $code =~ s/\"//g;
540: $code .=';return $condition;';
1.137 albertel 541: if (!$Apache::lonxml::default_homework_loaded) {
542: &Apache::lonxml::default_homework_load($safeeval);
543: }
1.131 albertel 544: $result = &Apache::run::run($code,$safeeval);
545: &Apache::lonxml::debug("block :$code: returned :$result:");
546: } else {
547: $result='1';
548: }
549: if ( ! $result ) {
1.146 albertel 550: my $skip=&Apache::lonxml::get_all_text("/block",$parser);
1.131 albertel 551: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
552: }
553: $result='';
554: } elsif ($target eq 'edit') {
555: $result .=&Apache::edit::tag_start($target,$token);
556: $result .=&Apache::edit::text_arg('Test Condition:','condition',
557: $token,40);
558: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
559: } elsif ($target eq 'modified') {
560: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
561: $safeeval,'condition');
562: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 563: }
1.131 albertel 564: return $result;
1.1 albertel 565: }
566:
567: sub end_block {
1.38 albertel 568: return '';
1.4 tsai 569: }
570:
571: sub start_while {
1.40 albertel 572: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.4 tsai 573:
574: my $code = @$parstack[$#$parstack];
575: $code =~ s/\"//g;
576: $code .=';return $condition;';
577:
1.5 tsai 578: push( @Apache::structuretags::whileconds, $code);
1.137 albertel 579: if (!$Apache::lonxml::default_homework_loaded) {
580: &Apache::lonxml::default_homework_load($safeeval);
581: }
1.4 tsai 582: my $result = &Apache::run::run($code,$safeeval);
583: my $bodytext=$$parser[$#$parser]->get_text("/while");
1.5 tsai 584: push( @Apache::structuretags::whilebody, $bodytext);
585: if ( $result ) {
1.8 albertel 586: &Apache::lonxml::newparser($parser,\$bodytext);
1.4 tsai 587: }
588: return "";
589: }
590:
591: sub end_while {
1.40 albertel 592: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.5 tsai 593: my $code = pop @Apache::structuretags::whileconds;
594: my $bodytext = pop @Apache::structuretags::whilebody;
595: my $result = &Apache::run::run($code,$safeeval);
596: if ( $result ) {
1.8 albertel 597: &Apache::lonxml::newparser($parser,\$bodytext);
1.5 tsai 598: }
599: return "";
1.1 albertel 600: }
1.6 tsai 601:
1.110 albertel 602: # <randomlist show="1">
1.6 tsai 603: # <tag1>..</tag1>
604: # <tag2>..</tag2>
605: # <tag3>..</tag3>
606: # ...
607: # </randomlist>
608: sub start_randomlist {
1.40 albertel 609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.86 albertel 610: my $result;
1.111 albertel 611: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1.126 albertel 612: $target eq 'tex' || $target eq 'analyze') {
1.146 albertel 613: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.71 albertel 614: my $b_parser= HTML::TokeParser->new(\$body);
615: my $b_tok;
616: my @randomlist;
617: my $list_item;
618: while($b_tok = $b_parser->get_token() ) {
619: if($b_tok->[0] eq 'S') { # start tag
620: # get content of the tag until matching end tag
621: # get all text upto the matching tag
622: # and push the content into @randomlist
623: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
624: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
625: push(@randomlist,$list_item);
626: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>";
627: }
628: if($b_tok->[0] eq 'T') { # text
629: # what to do with text in between tags?
630: # print "<b>TEXT $b_tok->[1]</b><br />";
631: }
632: # if($b_tok->[0] eq 'E') { # end tag, should not happen
633: # print "<b>END-TAG $b_tok->[1]</b><br />";
634: # }
635: }
636: my @idx_arr = (0 .. $#randomlist);
637: &Apache::structuretags::shuffle(\@idx_arr);
638: my $bodytext = '';
1.86 albertel 639: my $show=$#randomlist;
640: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
641: $showarg--;
642: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
643: for(0 .. $show) {
1.71 albertel 644: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1.6 tsai 645: }
1.71 albertel 646: &Apache::lonxml::newparser($parser,\$bodytext);
1.86 albertel 647: } elsif ($target eq 'edit' ) {
648: $result .= &Apache::edit::tag_start($target,$token);
649: $result .= &Apache::edit::text_arg('Maximum Tags to Show:','show',$token,5);
650: $result .= &Apache::edit::end_row().&Apache::edit::start_spanning_row();
651: } elsif ($target eq 'modified' ) {
652: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
653: 'show');
654: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.7 tsai 655: }
1.86 albertel 656: return $result;
1.7 tsai 657: }
658:
659: sub shuffle {
660: my $a=shift;
661: my $i;
1.70 albertel 662: if (defined(@$a)) {
663: &Apache::response::setrandomnumber();
664: for($i=@$a;--$i;) {
1.118 albertel 665: my $j=int(&Math::Random::random_uniform() * ($i+1));
1.70 albertel 666: next if $i == $j;
667: @$a[$i,$j] = @$a[$j,$i];
668: }
1.7 tsai 669: }
1.6 tsai 670: }
671:
672: sub end_randomlist {
1.86 albertel 673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
674: my $result;
675: if ($target eq 'edit' ) {
676: $result=&Apache::edit::tag_end($target,$token,'End Randomly Parsed Block');
677: }
678: return $result;
1.6 tsai 679: }
680:
1.11 albertel 681: sub start_part {
1.40 albertel 682: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.95 albertel 683: my $result='';
1.39 albertel 684: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.47 albertel 685: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
1.14 albertel 686: $Apache::inputtags::part=$id;
1.18 albertel 687: @Apache::inputtags::responselist = ();
1.51 albertel 688: @Apache::inputtags::previous=();
1.149 albertel 689: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
690:
1.15 www 691: if ($target eq 'meta') {
1.16 albertel 692: return &Apache::response::mandatory_part_meta;
1.149 albertel 693: } elsif ($target eq 'web' || $target eq 'grade' ||
694: $target eq 'answer' || $target eq 'tex') {
695: if ($hidden) {
696: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
697: } else {
698: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
699: push (@Apache::inputtags::status,$status);
700: my $expression='$external::datestatus="'.$status.'";';
701: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
702: &Apache::run::run($expression,$safeeval);
703: if ( $status eq 'CLOSED' ) {
704: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
705: if ( $target eq "web" ) {
706: $result="<br />Part is not open to be viewed. It $accessmsg<br />";
707: } elsif ( $target eq 'tex' ) {
708: $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";
709: }
710: } else {
711: if ($target eq 'tex') {
1.151 sakharuk 712: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
713: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
714: if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.149 albertel 715: }
716: }
1.21 albertel 717: }
1.134 albertel 718: } elsif ($target eq 'edit') {
719: $result.=&Apache::edit::tag_start($target,$token);
720: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
721: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
722: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
723:
724: } elsif ($target eq 'modified') {
725: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
726: 'id');
727: if ($constructtag) {
728: $result = &Apache::edit::rebuild_tag($token);
729: $result.=&Apache::edit::handle_insert();
730: }
1.15 www 731: }
1.95 albertel 732: return $result;
1.11 albertel 733: }
734:
735: sub end_part {
1.40 albertel 736: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.18 albertel 737: &Apache::lonxml::debug("in end_part $target ");
1.28 albertel 738: my $status=$Apache::inputtags::status['-1'];
1.149 albertel 739: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.139 albertel 740: my $result='';
741: if ( $target eq 'meta' ) {
742: $result='';
1.149 albertel 743: } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {
1.139 albertel 744: $result=&Apache::inputtags::grade;
1.149 albertel 745: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
1.139 albertel 746: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
747: $target);
1.120 sakharuk 748: if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}
1.139 albertel 749: $result=$gradestatus;
1.37 albertel 750: }
1.139 albertel 751: pop @Apache::inputtags::status;
1.154 albertel 752: $Apache::inputtags::part='';
1.139 albertel 753: return $result;
1.11 albertel 754: }
1.1 albertel 755:
1.25 albertel 756: sub start_preduedate {
1.40 albertel 757: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 758: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.29 albertel 759: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.133 sakharuk 760: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
761: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.146 albertel 762: &Apache::lonxml::get_all_text("/preduedate",$parser);
1.24 albertel 763: }
764: }
765: return '';
766: }
767:
1.25 albertel 768: sub end_preduedate {
1.24 albertel 769: return '';
770: }
771:
1.25 albertel 772: sub start_postanswerdate {
1.40 albertel 773: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 774: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
1.24 albertel 775: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
1.146 albertel 776: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
1.24 albertel 777: }
1.104 sakharuk 778: } elsif ($target eq 'tex') {
779: return '\vskip 0 mm \noindent';
1.24 albertel 780: }
781: return '';
782: }
783:
1.25 albertel 784: sub end_postanswerdate {
1.24 albertel 785: return '';
786: }
787:
1.25 albertel 788: sub start_notsolved {
1.40 albertel 789: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 790: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.24 albertel 791: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
792: &Apache::lonxml::debug("not solved has :$gradestatus:");
793: if ($gradestatus =~ /^correct/) {
794: &Apache::lonxml::debug("skipping");
1.146 albertel 795: &Apache::lonxml::get_all_text("/notsolved",$parser);
1.24 albertel 796: }
797: }
798: return '';
799: }
800:
1.25 albertel 801: sub end_notsolved {
1.24 albertel 802: return '';
803: }
804:
805: sub start_solved {
1.40 albertel 806: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.113 albertel 807: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
1.24 albertel 808: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
809: if ($gradestatus !~ /^correct/) {
1.146 albertel 810: &Apache::lonxml::get_all_text("/solved",$parser);
1.24 albertel 811: }
812: }
813: return '';
814: }
815:
816: sub end_solved {
817: return '';
818: }
1.34 albertel 819:
820: sub start_startouttext {
1.40 albertel 821: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 822: my @result=(''.'');
823: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
824: return (@result);
1.34 albertel 825: }
826: sub end_startouttext {
1.40 albertel 827: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 828: my $result='';
1.35 albertel 829: my $text='';
830:
1.34 albertel 831: if ($target eq 'edit') {
1.146 albertel 832: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.43 albertel 833: $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
1.42 albertel 834: <td>Delete:".
835: &Apache::edit::deletelist($target,$token)
1.82 albertel 836: ."</td>
1.42 albertel 837: <td>".
838: &Apache::edit::insertlist($target,$token).
1.150 albertel 839: &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n"
840: .'<table><tr><td>'.
841: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
842: undef,undef,600)
843: .'</td><td>'.
844: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
845: undef,undef,600)
846: .'</td></tr></table>'.
847: &Apache::edit::editfield($token->[1],$text,"",80,4);
1.35 albertel 848: }
849: if ($target eq 'modified') {
1.146 albertel 850: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.35 albertel 851: $result='<startouttext />'.&Apache::edit::modifiedfield();
1.85 sakharuk 852: }
853: if ($target eq 'tex') {
854: $result .= '\noindent ';
1.34 albertel 855: }
856: return $result;
857: }
858: sub start_endouttext {
1.40 albertel 859: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.34 albertel 860: my $result='';
1.43 albertel 861: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1.130 www 862: if ($target eq "modified") {
863: $result='<endouttext />'.
864: &Apache::edit::handle_insertafter('startouttext'); }
1.34 albertel 865: return $result;
866: }
867: sub end_endouttext {
1.40 albertel 868: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.35 albertel 869: my @result=('','');
870: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
871: return (@result);
1.34 albertel 872: }
1.45 albertel 873: sub delete_startouttext {
874: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.146 albertel 875: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
1.45 albertel 876: my $text=$$parser['-1']->get_text("/endouttext");
1.69 albertel 877: my $ntoken=$$parser['-1']->get_token();
878: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
879: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1.45 albertel 880: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
881: # they did the last time round
1.69 albertel 882: &Apache::lonxml::increasedepth($ntoken);
883: &Apache::lonxml::decreasedepth($ntoken);
1.45 albertel 884: return 1;
885: }
1.34 albertel 886:
1.1 albertel 887: 1;
888: __END__
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