Annotation of loncom/homework/structuretags.pm, revision 1.159
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.159 ! albertel 4: # $Id: structuretags.pm,v 1.158 2003/04/02 20:52:25 sakharuk 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 {
1.159 ! albertel 41: &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
1.10 albertel 42: }
43:
44: sub start_web {
1.159 ! albertel 45: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 46: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);
! 47: if ($target eq 'web') {
! 48: return $bodytext;
! 49: }
! 50: return '';
1.10 albertel 51: }
52:
53: sub end_web {
1.44 ng 54: return '';
1.10 albertel 55: }
56:
57: sub start_tex {
1.159 ! albertel 58: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 59: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
! 60: if ($target eq 'tex') {
! 61: return $bodytext.' ';
! 62: }
! 63: return '';
1.10 albertel 64: }
65:
66: sub end_tex {
1.44 ng 67: return '';
1.9 albertel 68: }
69:
1.48 albertel 70: sub page_start {
1.159 ! albertel 71: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 72: my %found;
! 73: foreach my $taginside ($tagstack) {
! 74: foreach my $taglookedfor ('html','body','form') {
! 75: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
! 76: }
! 77: }
! 78:
! 79: my $result;
! 80: my $head_tag_start;
! 81: if (!defined($found{'html'})) {
! 82: $result=&Apache::londefdef::start_html($target,$token,$tagstack,
! 83: $parstack,$parser,$safeeval);
! 84: $head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);
! 85: }
! 86: my $body_tag_start;
! 87: if (!defined($found{'body'})) {
! 88: $body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.
! 89: 'onUnload="'.&Apache::lonmenu::unloadevents().'" ';
! 90: my $background=&Apache::lonxml::get_param('background',$parstack,
! 91: $safeeval);
! 92: if ($background) {
! 93: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
! 94: $background;
! 95: $body_tag_start.='background="'.$background.'" ';
! 96: } else {
! 97: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
! 98: $safeeval);
! 99: if ($bgcolor) {
! 100: $body_tag_start.='bgcolor="'.$bgcolor.'" ';
! 101: } else {
! 102: $body_tag_start.='bgcolor="#ffffff"';
! 103: }
! 104: }
! 105: $body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
! 106: if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
! 107: my ($symb)=&Apache::lonxml::whichuser();
! 108: if ($symb eq '') {
! 109: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
! 110: $help="Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored $help<br />";
! 111: $body_tag_start.=$help;
! 112: }
! 113: }
! 114: }
! 115: my $form_tag_start;
! 116: if (!defined($found{'form'})) {
! 117: $form_tag_start='<form name="lonhomework" method="POST" action="'.
! 118: $ENV{'request.uri'}.'">';
! 119: }
! 120: return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.105 albertel 121: }
122:
1.141 matthew 123: #use Time::HiRes();
1.105 albertel 124: sub get_resource_name {
1.159 ! albertel 125: my ($parstack,$safeeval)=@_;
! 126: my $name=&Apache::lonnet::gettitle();
! 127: if ($name eq '') {
! 128: $name=&Apache::lonnet::EXT('resource.title');
! 129: if ($name eq 'con_lost') { $name = ''; }
! 130: }
! 131: $Apache::lonhomework::name=$name;
! 132: return $name;
1.105 albertel 133: }
134:
135: sub setup_rndseed {
1.159 ! albertel 136: my ($safeeval)=@_;
! 137: my $rndseed;
! 138: if ($ENV{'request.state'} eq "construct") {
! 139: $rndseed=$ENV{'form.rndseed'};
! 140: if (!$rndseed) {
! 141: $rndseed=time;
! 142: $ENV{'form.rndseed'}=$rndseed;
! 143: }
! 144: &Apache::lonxml::debug("Setting rndseed to $rndseed");
! 145: &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
! 146: }
! 147: return $rndseed;
1.105 albertel 148: }
149:
150: sub problem_edit_header {
1.159 ! albertel 151: return '<input type="hidden" name="submitted" value="edit" />
1.105 albertel 152: <input type="hidden" name="problemmode" value="Edit" />
153: <input type="submit" name="problemmode" value="Discard Edits and View" />
154: <input type="submit" name="problemmode" value="EditXML" />
155: <input type="submit" name="Undo" value="undo" /> <hr />
1.135 www 156: <input type="submit" name="submit" value="Submit Changes and Edit" />
157: <input type="submit" name="submit" value="Submit Changes and View" /><br /><p> </p><table border="0"><tr><td bgcolor="#DDDDDD">
1.105 albertel 158: ';
159: }
160:
161: sub problem_edit_footer {
1.159 ! albertel 162: return '</td></tr></table><br /><input type="submit" name="submit" value="Submit Changes and Edit" />
1.105 albertel 163: <input type="submit" name="submit" value="Submit Changes and View" />';
164: }
165:
166: sub problem_web_to_edit_header {
1.159 ! albertel 167: my ($rndseed)=@_;
! 168: my $result.='<input type="hidden" name="problemmode" value="View" />
1.105 albertel 169: <input type="submit" name="problemmode" value="Edit" />
170: <input type="submit" name="problemmode" value="EditXML" />
171: Random Seed:<input type="text" name="rndseed" width="10" value="'.
172: $rndseed.'" />
173: <input type="submit" name="changerandseed" value="Change" />
174: <input type="submit" name="resetdata" value="Reset Submissions" />
175: <input type="checkbox" name="showallfoils" ';
1.159 ! albertel 176: if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }
! 177: $result.= ' /> Show All Foils
1.105 albertel 178: <hr />';
1.159 ! albertel 179: my $numtoanalyze=$ENV{'form.numtoanalyze'};
! 180: if (!$numtoanalyze) { $numtoanalyze=100; }
! 181: $result.= '<input type="submit" name="problemmode" value="Answer Distribution" />
1.136 albertel 182: <input type="text" name="numtoanalyze" value="'.
1.159 ! albertel 183: $numtoanalyze.'" size="5" /> <hr />';
! 184: return $result;
1.48 albertel 185: }
186:
1.65 albertel 187: sub initialize_storage {
1.159 ! albertel 188: %Apache::lonhomework::results=();
! 189: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
! 190: if ($ENV{'request.state'} eq 'construct') {
! 191: %Apache::lonhomework::history=
! 192: &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);
! 193: my ($temp)=keys %Apache::lonhomework::history ;
! 194: &Apache::lonxml::debug("Return message of $temp");
! 195: } else {
! 196: %Apache::lonhomework::history=
! 197: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
! 198: }
! 199: #ignore error conditions
1.67 albertel 200: my ($temp)=keys %Apache::lonhomework::history ;
1.159 ! albertel 201: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 202: }
203:
204: # -------------------------------------------------------------finalize_storage
205: # Stores away the result has to a student's environment
206: # checks form.grade_ for specific values, other wises stores
207: # to the running users environment
208: sub finalize_storage {
1.159 ! albertel 209: my $result;
! 210: my ($temp) = keys %Apache::lonhomework::results;
! 211: if ( $temp ne '' ) {
! 212: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
! 213: if ($ENV{'request.state'} eq 'construct') {
! 214: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
! 215: $ENV{'request.uri'},'',$domain,$name);
! 216: &Apache::lonxml::debug('Construct Store return message:'.$result);
! 217: } else {
! 218: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
! 219: $symb,$courseid,$domain,$name);
! 220: &Apache::lonxml::debug('Store return message:'.$result);
! 221: }
1.67 albertel 222: }
1.159 ! albertel 223: return $result;
1.65 albertel 224: }
225:
226: sub checkout_msg {
1.159 ! albertel 227: return (<<ENDCHECKOUT);
1.65 albertel 228: <h2>The resource needs to be checked out</h2>
229: As a resource gets checked out, a unique timestamped ID is given to it, and a
230: permanent record is left in the system.<p />
231: <font color=red>
232: Checking out resources is subject to course policies, and may exclude future
233: credit even if done erroneously.<p />
1.91 albertel 234: </font>
235: <form name="checkout" method="POST" action="$ENV{'request.uri'}">
236: <input type="hidden" name="doescheckout" value="yes" />
237: <input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />
1.65 albertel 238: </form>
239: ENDCHECKOUT
240: }
241:
1.9 albertel 242: sub start_problem {
1.159 ! albertel 243: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.19 albertel 244:
1.159 ! albertel 245: $Apache::lonhomework::parsing_a_problem=1;
! 246: # meta is called from lonpublisher, which doesn't uses the normal
! 247: # lonhomework method of parsing the file which means that inputtags
! 248: # won't get reset
! 249: if ( $Apache::inputtags::part ne '' && $target != 'meta' ) {
! 250: &Apache::lonxml::error('Only one problem allowed in a .problem file');
! 251: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
! 252: return '';
! 253: }
1.19 albertel 254: #intialize globals
1.159 ! albertel 255: $Apache::inputtags::part='0';
! 256: @Apache::inputtags::responselist = ();
! 257: @Apache::inputtags::previous=();
! 258: @Apache::inputtags::previous_version=();
! 259: $Apache::structuretags::printanswer='No';
! 260: if ($target ne 'analyze') {
! 261: &initialize_storage();
! 262: if ($target eq 'web') {
! 263: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
! 264: }
! 265: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
! 266: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
! 267: }
! 268: if ($Apache::lonhomework::type eq '') {
! 269: my $uri=$ENV{'request.uri'};
! 270: if ($uri=~/\.(\w+)$/) {
! 271: $Apache::lonhomework::type=$1;
! 272: &Apache::lonxml::debug("Using type of $1");
! 273: } else {
! 274: $Apache::lonhomework::type='problem';
! 275: &Apache::lonxml::debug("Using default type, problem, :$uri:");
! 276: }
1.87 albertel 277: }
1.58 www 278:
1.159 ! albertel 279: #added vars to the scripting enviroment
! 280: my $expression='$external::part='.$Apache::inputtags::part.';';
1.24 albertel 281: &Apache::run::run($expression,$safeeval);
1.159 ! albertel 282: my $status;
! 283: my $accessmsg;
! 284:
! 285: #should get back a <html> or the neccesary stuff to start XML/MathML
! 286: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
! 287: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
! 288: if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}
! 289:
! 290: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
! 291: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
! 292: $target eq 'tex') {
! 293: #handle exam checkout
! 294: if ($Apache::lonhomework::type eq 'exam') {
! 295: my $token=
! 296: $Apache::lonhomework::history{"resource.0.outtoken"};
! 297: if (($ENV{'form.doescheckout'}) && (!$token)) {
! 298: $token=&Apache::lonxml::maketoken();
! 299: $Apache::lonhomework::history{"resource.0.outtoken"}=
! 300: $token;
! 301: }
! 302: $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 303: }
1.159 ! albertel 304:
! 305: #handle rand seed in construction space
! 306: my $rndseed=&setup_rndseed($safeeval);
! 307: ($status,$accessmsg) = &Apache::lonhomework::check_access('0');
! 308: push (@Apache::inputtags::status,$status);
! 309: my $expression='$external::datestatus="'.$status.'";';
! 310: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
! 311: &Apache::run::run($expression,$safeeval);
! 312: &Apache::lonxml::debug("Got $status");
! 313: if (( $status eq 'CLOSED' ) ||
! 314: ( $status eq 'UNCHECKEDOUT') ||
! 315: ( $status eq 'BANNED') ||
! 316: ( $status eq 'UNAVAILABLE')) {
! 317: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
! 318: if ( $target eq "web" ) {
! 319: $result.= $head_tag_start.'</head>';
! 320: my $msg=$body_tag_start;
! 321: if ($status eq 'UNAVAILABLE') {
! 322: $result.='<h1>Unable to determine if this resource is open due to network problems. Please try again later.</h1>';
! 323: } else {
! 324: $result.='<h1>Not open to be viewed</h1>';
! 325: }
! 326: if ($status eq 'CLOSED') {
! 327: $msg.='The problem '.$accessmsg;
! 328: } elsif ($status eq 'UNCHECKEDOUT') {
! 329: $msg.=&checkout_msg;
! 330: }
! 331: $result.=$msg.'<br />';
! 332: } elsif ($target eq 'tex') {
! 333: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
! 334: if ($status eq 'UNAVAILABLE') {
! 335: $result.='Unable to determine if this resource is open due to network problems. Please try again later.\vskip 0 mm ';
! 336: } else {
! 337: $result.="Problem is not open to be viewed. It $accessmsg \\vskip 0 mm ";
! 338: }
! 339: }
! 340: } elsif ($target eq 'web') {
! 341: my $name= &get_resource_name($parstack,$safeeval);
! 342: if ($status eq 'CAN_ANSWER') {
! 343: # create a page header and exit
! 344: $result.="$head_tag_start<title>$name</title></head>
1.158 sakharuk 345: $body_tag_start \n $form_tag_start".
1.159 ! albertel 346: '<input type="hidden" name="submitted" value="yes" />';
! 347: if ($ENV{'request.state'} eq "construct") {
! 348: $result.= &problem_web_to_edit_header($rndseed);
! 349: }
! 350: # if we are viewing someone else preserve that info
! 351: if (defined $ENV{'form.grade_symb'}) {
! 352: foreach my $field ('symb','courseid','domain','username') {
! 353: $result .= '<input type="hidden" name="grade_'.$field.
! 354: '" value="'.$ENV{"form.grade_$field"}.'" />'."\n";
! 355: }
! 356: }
! 357: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER'
! 358: || $status eq 'CLOSED' || $status eq 'UNAVALAILABLE') {
! 359: $result.=$head_tag_start.
! 360: "<title>$name</title></head>\n$body_tag_start\n";
! 361: }
! 362: } elsif ($target eq 'tex') {
! 363: my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
! 364: if ($name eq '') {
! 365: $name=&Apache::lonnet::EXT('resource.title');
! 366: if ($name eq 'con_lost') { $name = ''; }
! 367: }
! 368: $Apache::lonhomework::name=$name;
! 369: my $id = $Apache::inputtags::part;
! 370: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
! 371: my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'keys');
! 372: my @allkeys = split /,/,$allkeys;
! 373: my $allow_print_points = 0;
! 374: foreach my $partial_key (@allkeys) {
! 375: if ($partial_key=~m/weight/) {
! 376: $allow_print_points++;
! 377: }
! 378: }
! 379: my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
! 380: $duedate = POSIX::strftime("%c",localtime($duedate));
! 381: my $temp_file;
! 382: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
! 383: if (-e $filename) {
! 384: $temp_file = Apache::File->new($filename);
! 385: } else {
! 386: $temp_file = Apache::File->new('>>'.$filename);
! 387: }
! 388: my @due_file_content = <$temp_file>;
! 389: my $due_file_content = $due_file_content[$#due_file_content];
! 390: chomp $due_file_content;
! 391: my $name_of_resourse= &get_resource_name($parstack,$safeeval);
! 392: if ($due_file_content ne $duedate) {
! 393: $temp_file = Apache::File->new('>'.$filename);
! 394: print $temp_file "$duedate\n";
! 395: if (not $ENV{'request.symb'} =~ m/\.page_/) {
! 396: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
! 397: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$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}';
! 398: } else {
! 399: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent\begin{minipage}{\textwidth}';
! 400: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
! 401: }
1.104 sakharuk 402: } else {
1.159 ! albertel 403: $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
1.104 sakharuk 404: }
1.101 sakharuk 405: } else {
1.159 ! albertel 406: if (not $ENV{'request.symb'} =~ m/\.page_/) {
! 407: $result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent\begin{minipage}{\textwidth}';
! 408: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
! 409: } else {
! 410: $result .= '\vskip 1mm \\\\\\\\';
! 411: }
! 412: }
1.99 sakharuk 413: }
1.159 ! albertel 414: } elsif ($target eq 'edit') {
! 415: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
! 416: &problem_edit_header();
! 417: my $temp=&Apache::edit::insertlist($target,$token);
! 418: $result.=$temp;
! 419: } elsif ($target eq 'modified') {
! 420: $result=$token->[4];
! 421: $result.=&Apache::edit::handle_insert();
! 422: } else {
! 423: # page_start returned a starting result, delete it if we don't need it
! 424: $result = '';
1.99 sakharuk 425: }
1.159 ! albertel 426: return $result;
1.9 albertel 427: }
428:
429: sub end_problem {
1.159 ! albertel 430: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 431: my $result='';
! 432: my $status=$Apache::inputtags::status['-1'];
! 433: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
! 434: $target eq 'tex') {
! 435: if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&
! 436: $status eq 'CAN_ANSWER' ) {
! 437: # if part is zero, no <part>s existed, so we need to the grading
! 438: &Apache::inputtags::grade;
! 439: } elsif ( ($target eq 'web' || $target eq 'tex') &&
! 440: $Apache::inputtags::part eq '0' &&
! 441: $status ne 'UNCHECKEDOUT') {
! 442: # if part is zero, no <part>s existed, so we need show the current
! 443: # grading status
! 444: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
! 445: $result.= $gradestatus;
! 446: }
! 447: if (
! 448: (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) ||
! 449: ($target eq 'answer') || ($target eq 'tex')
! 450: ) {
! 451: if ($status eq 'CAN_ANSWER') {
! 452: if ($target ne 'tex') {
! 453: $result.="</form></body>\n";
! 454: }
! 455: } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' ||
! 456: $status eq 'UNCHECKEDOUT' ) {
! 457: if ($target ne 'tex') {
! 458: $result.="</body>\n";
! 459: }
! 460: }
! 461: if ($target eq 'web') {
! 462: $result.=&Apache::lonxml::xmlend();
! 463: } elsif ($target eq 'tex') {
! 464: $result .= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
! 465: if (not $ENV{'request.symb'} =~ m/\.page_/) {
! 466: $result .= '\end{minipage}\end{document} ';
! 467: } else {
! 468: $result .= '';
! 469: }
! 470: }
! 471: }
! 472: if ($target eq 'grade') {
! 473: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
! 474: &finalize_storage();
! 475: }
! 476: if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct') ) {
! 477: $result.='</html>'; #normally we get it from xmlend, but in CSTR
! 478: # we always show answer mode too.
! 479: }
! 480: } elsif ($target eq 'meta') {
! 481: if ($Apache::inputtags::part eq '0') {
! 482: $result=&Apache::response::mandatory_part_meta;
! 483: }
! 484: } elsif ($target eq 'edit') {
! 485: &Apache::lonxml::debug("in end_problem with $target, edit");
! 486: $result = &problem_edit_footer();
! 487: }
1.155 albertel 488:
1.159 ! albertel 489: undef(%Apache::lonhomework::history);
! 490: undef(%Apache::lonhomework::results);
! 491: undef($Apache::inputtags::part);
! 492: undef($Apache::lonhomework::parsing_a_problem);
! 493:
! 494: return $result;
1.48 albertel 495: }
496:
1.108 albertel 497:
1.48 albertel 498: sub start_library {
1.159 ! albertel 499: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 500: my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
1.109 albertel 501:
1.159 ! albertel 502: if ($target eq 'edit') {
! 503: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
! 504: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
! 505: $result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
! 506: &problem_edit_header();
! 507: my $temp=&Apache::edit::insertlist($target,$token);
! 508: $result.=$temp;
! 509: } elsif ($target eq 'modified') {
! 510: $result=$token->[4];
! 511: $result.=&Apache::edit::handle_insert();
! 512: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
! 513: $ENV{'request.state'} eq "construct" ) {
! 514: ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
! 515: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
! 516: my $name=&get_resource_name($parstack,$safeeval);
! 517: my $rndseed=&setup_rndseed($safeeval);
! 518: $result.="$head_tag_start<title>$name</title></head>
1.105 albertel 519: $body_tag_start \n $form_tag_start".
1.159 ! albertel 520: '<input type="hidden" name="submitted" value="yes" />';
! 521: $result.=&problem_web_to_edit_header($rndseed);
! 522: }
! 523: return $result;
1.48 albertel 524: }
525:
526: sub end_library {
1.159 ! albertel 527: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 528: my $result='';
! 529: if ($target eq 'edit') {
! 530: $result=&problem_edit_footer();
! 531: } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
! 532: $ENV{'request.state'} eq "construct") {
! 533: $result.='</form></body>'.&Apache::lonxml::xmlend();
! 534: }
! 535: return $result;
1.1 albertel 536: }
537:
538: sub start_block {
1.131 albertel 539: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
540:
541: my $result;
1.1 albertel 542:
1.131 albertel 543: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
544: $target eq 'tex' || $target eq 'analyze') {
1.159 ! albertel 545: my $code = $token->[2]->{'condition'};
1.131 albertel 546: if ($code) {
1.137 albertel 547: if (!$Apache::lonxml::default_homework_loaded) {
548: &Apache::lonxml::default_homework_load($safeeval);
549: }
1.131 albertel 550: $result = &Apache::run::run($code,$safeeval);
551: &Apache::lonxml::debug("block :$code: returned :$result:");
552: } else {
553: $result='1';
554: }
555: if ( ! $result ) {
1.146 albertel 556: my $skip=&Apache::lonxml::get_all_text("/block",$parser);
1.131 albertel 557: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
558: }
559: $result='';
560: } elsif ($target eq 'edit') {
561: $result .=&Apache::edit::tag_start($target,$token);
562: $result .=&Apache::edit::text_arg('Test Condition:','condition',
563: $token,40);
564: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
565: } elsif ($target eq 'modified') {
566: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
567: $safeeval,'condition');
568: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 569: }
1.131 albertel 570: return $result;
1.1 albertel 571: }
572:
573: sub end_block {
1.159 ! albertel 574: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 575: my @result=('','');
! 576: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
! 577: return (@result);
1.4 tsai 578: }
579:
580: sub start_while {
1.159 ! albertel 581: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 582:
! 583: my $code = $token->[2]->{'condition'};
1.4 tsai 584:
1.159 ! albertel 585: push( @Apache::structuretags::whileconds, $code);
! 586: if (!$Apache::lonxml::default_homework_loaded) {
! 587: &Apache::lonxml::default_homework_load($safeeval);
! 588: }
! 589: my $result = &Apache::run::run($code,$safeeval);
! 590: my $bodytext=$$parser[$#$parser]->get_text("/while");
! 591: push( @Apache::structuretags::whilebody, $bodytext);
! 592: if ( $result ) {
! 593: &Apache::lonxml::newparser($parser,\$bodytext);
! 594: }
! 595: return "";
1.4 tsai 596: }
597:
598: sub end_while {
1.159 ! albertel 599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 600: my $code = pop @Apache::structuretags::whileconds;
! 601: my $bodytext = pop @Apache::structuretags::whilebody;
! 602: my $result = &Apache::run::run($code,$safeeval);
! 603: if ( $result ) {
! 604: &Apache::lonxml::newparser($parser,\$bodytext);
! 605: }
! 606: return "";
1.1 albertel 607: }
1.6 tsai 608:
1.110 albertel 609: # <randomlist show="1">
1.6 tsai 610: # <tag1>..</tag1>
611: # <tag2>..</tag2>
612: # <tag3>..</tag3>
613: # ...
614: # </randomlist>
615: sub start_randomlist {
1.159 ! albertel 616: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 617: my $result;
! 618: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
! 619: $target eq 'tex' || $target eq 'analyze') {
! 620: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
! 621: my $b_parser= HTML::TokeParser->new(\$body);
! 622: my $b_tok;
! 623: my @randomlist;
! 624: my $list_item;
! 625: while($b_tok = $b_parser->get_token() ) {
! 626: if($b_tok->[0] eq 'S') { # start tag
! 627: # get content of the tag until matching end tag
! 628: # get all text upto the matching tag
! 629: # and push the content into @randomlist
! 630: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
! 631: $b_parser);
! 632: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
! 633: push(@randomlist,$list_item);
! 634: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
! 635: # $list_item</b>";
! 636: }
! 637: if($b_tok->[0] eq 'T') { # text
! 638: # what to do with text in between tags?
! 639: # print "<b>TEXT $b_tok->[1]</b><br />";
! 640: }
! 641: # if($b_tok->[0] eq 'E') { # end tag, should not happen
! 642: # print "<b>END-TAG $b_tok->[1]</b><br />";
! 643: # }
! 644: }
! 645: my @idx_arr = (0 .. $#randomlist);
! 646: &Apache::structuretags::shuffle(\@idx_arr);
! 647: my $bodytext = '';
! 648: my $show=$#randomlist;
! 649: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
! 650: $showarg--;
! 651: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
! 652: for(0 .. $show) {
! 653: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
! 654: }
! 655: &Apache::lonxml::newparser($parser,\$bodytext);
! 656: } elsif ($target eq 'edit' ) {
! 657: $result .=&Apache::edit::tag_start($target,$token);
! 658: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
! 659: $token,5);
! 660: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
! 661: } elsif ($target eq 'modified' ) {
! 662: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
! 663: $safeeval,'show');
! 664: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
! 665: }
! 666: return $result;
1.7 tsai 667: }
668:
669: sub shuffle {
670: my $a=shift;
671: my $i;
1.70 albertel 672: if (defined(@$a)) {
1.159 ! albertel 673: &Apache::response::setrandomnumber();
! 674: for($i=@$a;--$i;) {
! 675: my $j=int(&Math::Random::random_uniform() * ($i+1));
! 676: next if $i == $j;
! 677: @$a[$i,$j] = @$a[$j,$i];
! 678: }
1.7 tsai 679: }
1.6 tsai 680: }
681:
682: sub end_randomlist {
1.159 ! albertel 683: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 684: my $result;
! 685: if ($target eq 'edit' ) {
! 686: $result=&Apache::edit::tag_end($target,$token,
! 687: 'End Randomly Parsed Block');
! 688: }
! 689: return $result;
1.6 tsai 690: }
691:
1.11 albertel 692: sub start_part {
1.159 ! albertel 693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 694: my $result='';
! 695: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
! 696: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
! 697: $Apache::inputtags::part=$id;
! 698: @Apache::inputtags::responselist = ();
! 699: @Apache::inputtags::previous=();
! 700: @Apache::inputtags::previous_version=();
! 701: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
! 702:
! 703: if ($target eq 'meta') {
! 704: return &Apache::response::mandatory_part_meta;
! 705: } elsif ($target eq 'web' || $target eq 'grade' ||
! 706: $target eq 'answer' || $target eq 'tex') {
! 707: if ($hidden) {
! 708: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
! 709: } else {
! 710: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
! 711: push (@Apache::inputtags::status,$status);
! 712: my $expression='$external::datestatus="'.$status.'";';
! 713: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
! 714: &Apache::run::run($expression,$safeeval);
! 715: if ( $status eq 'CLOSED' ) {
! 716: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
! 717: if ( $target eq "web" ) {
! 718: $result="<br />Part is not open to be viewed. It $accessmsg<br />";
! 719: } elsif ( $target eq 'tex' ) {
! 720: $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";
! 721: }
! 722: } else {
! 723: if ($target eq 'tex') {
! 724: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
! 725: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
! 726: if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}
! 727: }
! 728: }
! 729: }
! 730: } elsif ($target eq 'edit') {
! 731: $result.=&Apache::edit::tag_start($target,$token);
! 732: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
! 733: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
! 734: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
! 735: } elsif ($target eq 'modified') {
! 736: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
! 737: $safeeval,'id');
! 738: if ($constructtag) {
! 739: $result = &Apache::edit::rebuild_tag($token);
! 740: $result.=&Apache::edit::handle_insert();
! 741: }
! 742: }
! 743: return $result;
1.11 albertel 744: }
745:
746: sub end_part {
1.159 ! albertel 747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 748: &Apache::lonxml::debug("in end_part $target ");
! 749: my $status=$Apache::inputtags::status['-1'];
! 750: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
! 751: my $result='';
! 752: if ( $target eq 'meta' ) {
! 753: $result='';
! 754: } elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {
! 755: $result=&Apache::inputtags::grade;
! 756: } elsif (($target eq 'web' || $target eq 'tex') && !$hidden ) {
! 757: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
! 758: $target);
! 759: if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}
! 760: $result=$gradestatus;
! 761: }
! 762: pop @Apache::inputtags::status;
! 763: $Apache::inputtags::part='';
! 764: return $result;
1.11 albertel 765: }
1.1 albertel 766:
1.25 albertel 767: sub start_preduedate {
1.159 ! albertel 768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 769: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') {
! 770: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
! 771: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&
! 772: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
! 773: &Apache::lonxml::get_all_text("/preduedate",$parser);
! 774: }
1.24 albertel 775: }
1.159 ! albertel 776: return '';
1.24 albertel 777: }
778:
1.25 albertel 779: sub end_preduedate {
1.159 ! albertel 780: return '';
1.24 albertel 781: }
782:
1.25 albertel 783: sub start_postanswerdate {
1.159 ! albertel 784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 785: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
! 786: if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
! 787: &Apache::lonxml::get_all_text("/postanswerdate",$parser);
! 788: }
! 789: } elsif ($target eq 'tex') {
! 790: return '\vskip 0 mm \noindent';
! 791: }
! 792: return '';
1.24 albertel 793: }
794:
1.25 albertel 795: sub end_postanswerdate {
1.159 ! albertel 796: return '';
1.24 albertel 797: }
798:
1.25 albertel 799: sub start_notsolved {
1.159 ! albertel 800: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 801: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
! 802: $target eq 'tex') {
! 803: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
! 804: &Apache::lonxml::debug("not solved has :$gradestatus:");
! 805: if ($gradestatus =~ /^correct/) {
! 806: &Apache::lonxml::debug("skipping");
! 807: &Apache::lonxml::get_all_text("/notsolved",$parser);
! 808: }
1.24 albertel 809: }
1.159 ! albertel 810: return '';
1.24 albertel 811: }
812:
1.25 albertel 813: sub end_notsolved {
1.159 ! albertel 814: return '';
1.24 albertel 815: }
816:
817: sub start_solved {
1.159 ! albertel 818: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 819: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
! 820: $target eq 'tex') {
! 821: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
! 822: if ($gradestatus !~ /^correct/) {
! 823: &Apache::lonxml::get_all_text("/solved",$parser);
! 824: }
1.24 albertel 825: }
1.159 ! albertel 826: return '';
1.24 albertel 827: }
828:
829: sub end_solved {
1.159 ! albertel 830: return '';
1.24 albertel 831: }
1.34 albertel 832:
833: sub start_startouttext {
1.159 ! albertel 834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 835: my @result=(''.'');
! 836: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
! 837: return (@result);
1.34 albertel 838: }
1.159 ! albertel 839:
1.34 albertel 840: sub end_startouttext {
1.159 ! albertel 841: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 842: my $result='';
! 843: my $text='';
! 844:
! 845: if ($target eq 'edit') {
! 846: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
! 847: $result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>
1.42 albertel 848: <td>Delete:".
1.159 ! albertel 849: &Apache::edit::deletelist($target,$token)
! 850: ."</td>
1.42 albertel 851: <td>".
1.159 ! albertel 852: &Apache::edit::insertlist($target,$token).
! 853: &Apache::edit::end_row().
! 854: &Apache::edit::start_spanning_row()."\n"
! 855: .'<table><tr><td>'.
! 856: &Apache::loncommon::help_open_topic("Greek_Symbols",
! 857: 'Greek Symbols',
! 858: undef,undef,600)
! 859: .'</td><td>'.
! 860: &Apache::loncommon::help_open_topic("Other_Symbols",
! 861: 'Other Symbols',
! 862: undef,undef,600)
! 863: .'</td></tr></table>'.
! 864: &Apache::edit::editfield($token->[1],$text,"",80,4);
! 865: }
! 866: if ($target eq 'modified') {
! 867: $text=&Apache::lonxml::get_all_text("endouttext",$parser);
! 868: $result='<startouttext />'.&Apache::edit::modifiedfield();
! 869: }
! 870: if ($target eq 'tex') {
! 871: $result .= '\noindent ';
! 872: }
! 873: return $result;
1.34 albertel 874: }
1.159 ! albertel 875:
1.34 albertel 876: sub start_endouttext {
1.159 ! albertel 877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 878: my $result='';
! 879: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
! 880: if ($target eq "modified") {
! 881: $result='<endouttext />'.
! 882: &Apache::edit::handle_insertafter('startouttext'); }
! 883: return $result;
1.34 albertel 884: }
1.159 ! albertel 885:
1.34 albertel 886: sub end_endouttext {
1.159 ! albertel 887: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 888: my @result=('','');
! 889: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
! 890: return (@result);
1.34 albertel 891: }
1.159 ! albertel 892:
1.45 albertel 893: sub delete_startouttext {
1.159 ! albertel 894: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
! 895: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser);
! 896: my $text=$$parser['-1']->get_text("/endouttext");
! 897: my $ntoken=$$parser['-1']->get_token();
! 898: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
! 899: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
! 900: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
! 901: # they did the last time round
! 902: &Apache::lonxml::increasedepth($ntoken);
! 903: &Apache::lonxml::decreasedepth($ntoken);
! 904: return 1;
1.45 albertel 905: }
1.34 albertel 906:
1.1 albertel 907: 1;
908: __END__
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