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- picks correct rndseed for when viewing as someone else. (Fixes BUG#4)

    1: # The LearningOnline Network with CAPA
    2: # various response type definitons response definition
    3: #
    4: # $Id: response.pm,v 1.59 2002/02/14 21:48:31 albertel Exp $
    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: #
   28: # 11/23,11/24,11/28 Gerd Kortemeyer
   29: # Guy Albertelli
   30: # 08/04,08/07 Gerd Kortemeyer
   31: 
   32: package Apache::response;
   33: use strict;
   34: 
   35: BEGIN {
   36:   &Apache::lonxml::register('Apache::response',('responseparam','parameter','caparesponse','numericalresponse','formularesponse','stringresponse','radiobuttonresponse','optionresponse','imageresponse','essayresponse','dataresponse','externalresponse'));
   37: }
   38: 
   39: sub start_response {
   40:   my ($parstack,$safeeval)=@_;
   41:   my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
   42:   if ($id eq '') { $id = $Apache::lonxml::curdepth; }
   43:   if ($#Apache::inputtags::import > -1) {
   44:     &Apache::lonxml::debug("Turning :$id: into");
   45:     $id = join('_',@Apache::inputtags::import).'_'.$id;
   46:     &Apache::lonxml::debug("New  :$id:");
   47:   }
   48:   push (@Apache::inputtags::response,$id);
   49:   push (@Apache::inputtags::responselist,$id);
   50:   @Apache::inputtags::inputlist=();
   51:   return $id;
   52: }
   53: 
   54: sub end_response {
   55:   pop @Apache::inputtags::response;
   56:   @Apache::inputtags::inputlist=();
   57:   return '';
   58: }
   59: 
   60: sub start_hintresponse {
   61:   my ($parstack,$safeeval)=@_;
   62:   my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
   63:   if ($id eq '') { $id = $Apache::lonxml::curdepth; }
   64:   push (@Apache::inputtags::response,$id);
   65:   return $id;
   66: }
   67: 
   68: sub end_hintresponse {
   69:   pop @Apache::inputtags::response;
   70:   return '';
   71: }
   72: 
   73: # used by response to set the non-safe space random number generator to something
   74: # that is stable and unique based on the part number and response number
   75: sub setrandomnumber {
   76:   my $rndseed;
   77:   if ($ENV{'request.state'} eq "construct") {
   78:     $rndseed=$ENV{'form.rndseed'};
   79:     if (!$rndseed) { $rndseed=time; }
   80:   } else {
   81:     my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
   82:     $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
   83:   }
   84:   &Apache::lonxml::debug("randseed $rndseed");
   85: #  $rndseed=unpack("%32i",$rndseed);
   86:   $rndseed=$rndseed
   87:     +(&Apache::lonnet::numval($Apache::inputtags::part) << 10);
   88:   if (defined($Apache::inputtags::response['-1'])) {
   89:     $rndseed=$rndseed
   90:       +&Apache::lonnet::numval($Apache::inputtags::response['-1']);
   91:   }
   92:   srand($rndseed);
   93:   &Apache::lonxml::debug("randseed $rndseed");
   94:   return '';
   95: }
   96: 
   97: sub meta_parameter_write {
   98:     my ($name,$type,$default,$display)=@_;
   99:     my $partref=$Apache::inputtags::part;
  100:     my $result='<parameter part="'.$Apache::inputtags::part.'"';
  101:     if (defined($Apache::inputtags::response[-1])) {
  102:       $result.=            ' id="'.$Apache::inputtags::response[-1].'"';
  103:       $partref.='_'.$Apache::inputtags::response[-1];
  104:     }
  105:     $result.=            ' name="'.$name.'"'.
  106:                          ' type="'.$type.'"'.
  107: ($default?' default="'.$default.'"':'').
  108: ($display?' display="'.$display.' [Part: '.$partref.']"':'')
  109:              .'></parameter>'
  110:              ."\n";
  111:     return $result;
  112: }
  113: 
  114: sub meta_package_write {
  115:     my $name=shift;
  116:     my $result = '<parameter part="'.$Apache::inputtags::part.'"';
  117:     if(defined($Apache::inputtags::response[-1])) {
  118:       $result.=              ' id="'.$Apache::inputtags::response[-1].'"';
  119:     }
  120:     $result.=' package="'.$name.'"></parameter>'."\n";
  121:     return $result;
  122: }
  123: 
  124: sub meta_stores_write {
  125:     my ($name,$type,$display)=@_;
  126:     my $partref=$Apache::inputtags::part;
  127:     my $result = '<stores part="'.$Apache::inputtags::part.'"';
  128:     if (defined($Apache::inputtags::response[-1])) {
  129:       $result.=           ' id="'.$Apache::inputtags::response[-1].'"';
  130:       $partref.='_'.$Apache::inputtags::response[-1];
  131:     }	
  132:     $result.=          ' name="'.$name.'"'.
  133:                        ' type="'.$type.'"'.
  134: 	            ' display="'.$display.' [Part: '.$partref.']"'.
  135: 		      "></stores>\n";
  136: }
  137: 
  138: sub mandatory_part_meta {
  139: #
  140: # Autogenerate metadata for mandatory
  141: # input (from RAT or lonparmset) and 
  142: # output (to lonspreadsheet)
  143: # of each part
  144: #
  145:  return
  146: #    &meta_parameter_write('opendate','date_start','',
  147: #                          'Opening Date').
  148: #    &meta_parameter_write('duedate','date_end','',
  149: #                          'Due Date').
  150: #    &meta_parameter_write('answerdate','date_start','',
  151: #                          'Show Answer Date').
  152: #    &meta_parameter_write('weight','int_zeropos','',
  153: #                          'Available Points').
  154: #    &meta_parameter_write('maxtries','int_pos','',
  155: #                          'Maximum Number of Tries').
  156:     &meta_package_write('part').
  157:     &meta_stores_write('solved','string',
  158:                           'Problem Status').
  159:     &meta_stores_write('tries','int_zeropos',
  160:                           'Number of Attempts').
  161:     &meta_stores_write('awarded','float',
  162: 		          'Partial Credit Factor');
  163: #
  164: # Note: responseid-specific data 'submission' and 'awarddetail'
  165: # not available to spreadsheet -> skip here
  166: #
  167: }
  168: 
  169: sub check_for_previous {
  170:   my ($curresponse,$partid,$id) = @_;
  171:   my %previous;
  172:   $previous{'used'} = 0;
  173:   foreach my $key (reverse(sort(keys(%Apache::lonhomework::history)))) {
  174:     if ($key =~ /resource\.$partid\.$id\.submission/) {
  175:       &Apache::lonxml::debug("Trying $key");
  176:       my $pastresponse=$Apache::lonhomework::history{$key};
  177:       if ($pastresponse eq $curresponse) {
  178: 	$previous{'used'} = 1;
  179: 	my $history;
  180: 	if ( $key =~ /^(\d+):/ ) {
  181: 	  $history=$1;
  182: 	  $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
  183: 	  $previous{'last'}='0';
  184: 	} else {
  185: 	  $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
  186: 	  $previous{'last'}='1';
  187: 	}
  188: 	if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN';	}
  189: 	&Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
  190: 	last;
  191:       }
  192:     }
  193:   }
  194:   return %previous;
  195: }
  196: 
  197: sub handle_previous {
  198:   my ($previous,$ad)=@_;
  199:   if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
  200:     if ($$previous{'last'}) {
  201:       push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
  202:     } else {
  203:       push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
  204:     }
  205:   }
  206: }
  207: 
  208: sub start_caparesponse {
  209:   require Apache::caparesponse; 
  210:   import Apache::caparesponse; 
  211:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  212: #  print "\n<br />\nsimple caparesponse\n";
  213:   return &Apache::caparesponse::start_caparesponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  214: }
  215: 
  216: sub start_stringresponse {
  217:   require Apache::caparesponse;
  218:   import Apache::caparesponse;
  219:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  220:   return &Apache::caparesponse::start_stringresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  221: }
  222: 
  223: sub start_formularesponse {
  224:   require Apache::caparesponse;
  225:   import Apache::caparesponse;
  226:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  227:   return &Apache::caparesponse::start_formularesponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  228: }
  229: 
  230: sub start_numericalresponse {
  231:   require Apache::caparesponse; 
  232:   import Apache::caparesponse; 
  233:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  234:   return &Apache::caparesponse::start_numericalresponse
  235:     ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  236: }
  237: 
  238: sub start_radiobuttonresponse {
  239:   require Apache::radiobuttonresponse; 
  240:   import Apache::radiobuttonresponse; 
  241:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  242:   return &Apache::radiobuttonresponse::start_radiobuttonresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  243: }
  244: 
  245: sub start_optionresponse {
  246:   require Apache::optionresponse; 
  247:   import Apache::optionresponse; 
  248:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  249:   return &Apache::optionresponse::start_optionresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  250: }
  251: 
  252: sub start_imageresponse {
  253:   require Apache::imageresponse; 
  254:   import Apache::imageresponse; 
  255:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  256:   return &Apache::imageresponse::start_imageresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  257: }
  258: 
  259: sub start_essayresponse {
  260:   require Apache::essayresponse; 
  261:   import Apache::essayresponse; 
  262:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  263:   return &Apache::essayresponse::start_essayresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  264: }
  265: 
  266: sub start_externalresponse {
  267:   require Apache::externalresponse; 
  268:   import Apache::externalresponse; 
  269:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  270:   return &Apache::externalresponse::start_externalresponse($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
  271: }
  272: 
  273: sub view_or_modify {
  274:   my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
  275:   my $myself=0;
  276:   if ( ($name eq $ENV{'user.name'}) && ($domain eq $ENV{'user.domain'}) ) {
  277:     $myself=1;
  278:   }
  279:   my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
  280:   my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
  281:   if ($mgr) { return "M"; }
  282:   if ($vgr) { return "V"; }
  283:   if ($myself) { return "V"; }
  284:   return '';
  285: }
  286: 
  287: sub start_dataresponse {
  288:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  289:   my $id = &Apache::response::start_response($parstack,$safeeval);
  290:   my $result;
  291:   if ($target eq 'web') {
  292:     $result = $token->[2]->{'display'}.':';
  293:   } elsif ($target eq 'meta') {
  294:     $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
  295: 						   $token->[2]->{'type'},
  296: 						   $token->[2]->{'display'});
  297:     $result .= &Apache::response::meta_package_write('dataresponse');
  298:   }
  299:   return $result;
  300: }
  301: 
  302: sub end_dataresponse {
  303:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  304:   my $result;
  305:   if ( $target eq 'web' ) {
  306:   } elsif ($target eq 'grade' ) {
  307:     if ( defined $ENV{'form.submitted'}) {
  308:       my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
  309:       my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
  310:       if ($allowed) {
  311: 	&Apache::response::setup_params('datasubmission');
  312: 	my $partid = $Apache::inputtags::part;
  313: 	my $id = $Apache::inputtags::response['-1'];
  314: 	my $response = $ENV{'form.HWVAL'.$id};
  315: 	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  316: 	if ( $response =~ /[^\s]/) {
  317: 	  $Apache::lonhomework::results{"resource.$partid.$id.$name"}=
  318: 	    $response;
  319: 	  $Apache::lonhomework::results{
  320: 					"resource.$partid.$id.submission"}=
  321: 					  $response;
  322: 	  $Apache::lonhomework::results{
  323: 					"resource.$partid.$id.awarddetail"}=
  324: 					  'SUBMITTED';
  325: 	}
  326:       } else {
  327: 	$result='Not Permitted to change values.'
  328:       }
  329:     }
  330:   }
  331:   &Apache::response::end_response;
  332:   return $result;
  333: }
  334: 
  335: sub start_responseparam {
  336:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  337:   my $result='';
  338:   if ($target eq 'meta') {
  339:     $result = &meta_parameter_write($token->[2]->{'name'},
  340: 				    $token->[2]->{'type'},
  341: 				    $token->[2]->{'default'},
  342: 				    $token->[2]->{'description'});
  343:   } elsif ($target eq 'edit') {
  344:     $result.=&Apache::edit::tag_start($target,$token);
  345:     $result.=&Apache::edit::text_arg('Name:','name',$token).
  346:       &Apache::edit::text_arg('Type:','type',$token).
  347: 	&Apache::edit::text_arg('Description:','description',$token).
  348: 	  &Apache::edit::text_arg('Default:','default',$token).
  349: 	    "</td></tr>";
  350:     $result.=&Apache::edit::end_table;
  351:   } elsif ($target eq 'modified') {
  352:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
  353: 						 'name','type','description',
  354: 						 'default');
  355:     if ($constructtag) {
  356:       $result = &Apache::edit::rebuild_tag($token);
  357:       $result.=&Apache::edit::handle_insert();
  358:     }
  359:   } elsif ($target eq 'grade' || $target eq 'answer' ) {
  360:     if ($ENV{'request.state'} eq 'construct') {
  361:       my $name    = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  362:       my $default = &Apache::lonxml::get_param('default',$parstack,$safeeval);
  363:       $Apache::inputtags::params{$name}=$default;
  364:     }
  365:   }
  366:   return $result;
  367: }
  368: 
  369: sub end_responseparam {
  370:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  371:   if ($target eq 'edit') { return ('','no'); }
  372:   return '';
  373: }
  374: 
  375: sub start_parameter {
  376:   my $result = &start_responseparam(@_);
  377:   return $result;
  378: }
  379: 
  380: sub end_parameter {
  381:   my $result = &end_responseparam(@_);
  382:   return $result;
  383: }
  384: 
  385: sub setup_params {
  386:   my ($tag) = @_;
  387: 
  388:   if ($ENV{'request.state'} eq 'construct') { return; }
  389:   @Apache::inputtags::params=();
  390:   my %paramlist=();
  391:   foreach my $key (keys(%Apache::lonnet::packagetab)) {
  392:     if ($key =~ /^$tag/) {
  393:       my ($package,$name) = split(/&/,$key);
  394:       $paramlist{$name}=1;
  395:     }
  396:   }
  397:   foreach my $key (keys(%paramlist)) {
  398:     my $entry= 'resource.'.$Apache::inputtags::part;
  399:     if (defined($Apache::inputtags::response[-1])) {
  400:       $entry.='_'.$Apache::inputtags::response[-1];
  401:     }
  402:     $entry.='.'.$key;
  403:     &Apache::lonxml::debug("looking for $entry");
  404:     my $value = &Apache::lonnet::EXT("$entry");
  405:     &Apache::lonxml::debug("$key has value :$value:");
  406:     if ($value eq 'con_lost' || $value =~ /^error:/) {
  407:       &Apache::lonxml::debug("using nothing");
  408:       $Apache::inputtags::params{$key}='';
  409:     } else {
  410:       &Apache::lonxml::debug("using value");
  411:       $Apache::inputtags::params{$key}=$value;
  412:     }
  413:   }
  414: }
  415: 
  416: sub answer_header {
  417:   my ($type) = @_;
  418:   my $result;
  419:   if ($type eq 'optionresponse' || $type eq 'radiobuttonresponse' ) {
  420:     $result = '<table border="1"><tr><th>Answer for Part:'.
  421:       $Apache::inputtags::part. '</th></tr><tr>'."\n";
  422:   } else {
  423:     $result = '<table border="1"><tr><td>Answer for Part:'.
  424:       $Apache::inputtags::part. '</td>'."\n";
  425:   }
  426:   return $result;
  427: }
  428: 
  429: sub answer_part {
  430:   my ($type,$answer) = @_;
  431:   my $result;
  432:   if ($type eq 'optionresponse' || $type eq 'radiobuttonresponse') {
  433:     $result = '<td>'.$answer.'</td>';
  434:   } else {
  435:     $result = '<td>'.$answer.'</td>';
  436:   }
  437:   return $result;
  438: }
  439: 
  440: sub answer_footer {
  441:   my ($type) = @_;
  442:   my $result;
  443:   if ($type eq 'optionresponse' || $type eq 'radiobuttonresponse') {
  444:     $result = '</tr></table>';
  445:   } else {
  446:     $result = '</tr></table>';
  447:   }
  448:   return $result;
  449: }
  450: 
  451: 1;
  452: __END__
  453: