File:  [LON-CAPA] / loncom / homework / hint.pm
Revision 1.71: download - view: text, annotated - select for diffs
Sat Sep 13 02:08:32 2008 UTC (15 years, 8 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_7_X, version_2_7_1, HEAD
- Bug 5793
Alternative solution.  Revert default_homework.lcpm to 1.138. No longer need to pass tag arg to caparesponse_check_list().
- Instead set $$args_ref{'type'} to 'ci' (the default) if type attrib is missing or null in the corresponding <stringhint> (hint.pm), or <stringresponse> (caparesponse.pm) tags.

    1: # The LearningOnline Network with CAPA 
    2: # implements the tags that control the hints
    3: #
    4: # $Id: hint.pm,v 1.71 2008/09/13 02:08:32 raeburn 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 me&aree 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: 
   29: package Apache::hinttags; 
   30: 
   31: use strict;
   32: use Apache::lonnet();
   33: use capa;
   34: use Apache::caparesponse();
   35: use Apache::lonmaxima();
   36: use Apache::response();
   37: use Apache::lonlocal;
   38: use Storable qw(dclone);
   39: 
   40: BEGIN {
   41:     &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint','stringhint','formulahint','optionhint','radiobuttonhint','mathhint','customhint'));
   42: }
   43: 
   44: 
   45: @Apache::hint::which=();
   46: sub start_hintgroup {
   47:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   48:     my $skiptoend='0';
   49:     my $result;
   50: 
   51:     if ($target eq 'web') {
   52: 	my $id=$Apache::inputtags::part;
   53: 	my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
   54: 	if ( $numtries eq '') { $numtries = 0; }
   55: 	my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
   56: 	&Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
   57: 	my $gradestatus=
   58: 	    $Apache::lonhomework::history{"resource.$id.solved"};
   59: 	my $showoncorrect=lc(&Apache::lonxml::get_param('showoncorrect',$parstack,$safeeval));	
   60: 	&Apache::lonxml::debug("onc orrect $showoncorrect, $gradestatus");
   61: 	if ( ($showoncorrect ne 'yes' && &Apache::response::show_answer()) ||
   62: 	     ( $numtries < $hinttries) ) {
   63: 	    &Apache::lonxml::debug("Grabbin all");
   64: 	    &Apache::lonxml::get_all_text("/hintgroup",$parser,$style);
   65: 	}
   66: 	&Apache::lonxml::startredirection;
   67:     } elsif ($target eq 'tex') {
   68: 	$result .= '\keephidden{';
   69:     } elsif ($target eq 'edit') {
   70: 	$result.=&Apache::edit::tag_start($target,$token);
   71: 	$result.=&Apache::edit::select_arg('Show hint even if problem Correct:','showoncorrect',[['no',&mt('No')],['yes',&mt('Yes')]],$token);
   72: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
   73:     } elsif ($target eq 'modified') {
   74: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'showoncorrect');
   75:        if ($constructtag) {
   76:            $result =&Apache::edit::rebuild_tag($token);
   77:        }
   78:     }
   79:     @Apache::hint::which=();
   80:     return $result;
   81: }
   82: 
   83: sub end_hintgroup {
   84:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   85:     my $result;
   86: 
   87:     if ($target eq 'web') {
   88: 	my $id=$Apache::inputtags::part;
   89: 	my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
   90: 	if ( $numtries eq '') { $numtries = 0; }
   91: 	my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
   92: 	&Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
   93: 	my $hinttext=&Apache::lonxml::endredirection;
   94: 	if ($Apache::lonhomework::type ne 'exam' &&
   95: 	    $numtries >= $hinttries && $hinttext =~/\S/) {
   96: 	    $result='<table bgcolor="#dddddd"><tr><td>'.
   97: 		$hinttext.'</td></tr></table>';
   98: 	}
   99:     } elsif ($target eq 'edit') {
  100: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
  101:     } elsif ($target eq 'tex') {
  102: 	$result .= '}';
  103:     }
  104:     @Apache::hint::which=();
  105:     return $result;
  106: }
  107: 
  108: sub start_numericalhint {
  109:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  110:     #do everything in end, so intervening <responseparams> work
  111:     &Apache::response::start_hintresponse($parstack,$safeeval);
  112:     &Apache::caparesponse::push_answer();
  113:     my $result;
  114:     if ($target eq 'edit') {
  115: 	$result.=&Apache::edit::tag_start($target,$token);
  116: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
  117: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token);
  118: 	if ($token->[1] eq 'numericalhint') {
  119: 	    $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
  120: 		&Apache::loncommon::help_open_topic('Physical_Units');
  121: 	    $result.=&Apache::edit::text_arg('Format:','format',$token,4).
  122: 		&Apache::loncommon::help_open_topic('Numerical_Response_Format');
  123: 	} elsif ($token->[1] eq 'formulahint') {
  124: 	    $result.=&Apache::edit::text_arg('Sample Points:','samples',
  125: 					     $token,40).
  126: 	        &Apache::loncommon::help_open_topic('Formula_Response_Sampling');
  127: 	}
  128: 	$result.=&Apache::edit::end_row();
  129: 	$result.=&Apache::edit::start_spanning_row();
  130:     } elsif ($target eq 'modified') {
  131: 	my $constructtag;
  132: 	if ($token->[1] eq 'numericalhint') {
  133: 	    $constructtag=&Apache::edit::get_new_args($token,$parstack,
  134: 						     $safeeval,'name',
  135: 						     'answer','unit','format');
  136: 	} elsif ($token->[1] eq 'formulahint') {
  137: 	    $constructtag=&Apache::edit::get_new_args($token,$parstack,
  138: 						     $safeeval,'name','answer',
  139: 						     'samples');
  140: 	}
  141: 	if ($constructtag) {
  142: 	    $result  = &Apache::edit::rebuild_tag($token);
  143: 	}
  144:     } elsif ($target eq 'web') {
  145: 	&Apache::response::reset_params();
  146:     }
  147:     return $result;
  148: }
  149: 
  150: sub end_numericalhint {
  151:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  152:     my $result;
  153:     if ($target eq 'web') {
  154: 	if (!$Apache::lonxml::default_homework_loaded) {
  155: 	    &Apache::lonxml::default_homework_load($safeeval);
  156: 	}
  157: 	$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
  158: 	my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  159: 	&Apache::response::setup_params('numericalhint',$safeeval);
  160: 
  161: 	my $partid=$Apache::inputtags::part;
  162: 	my $id=$Apache::inputtags::hint[-1];
  163: 	#id submissions occurred under
  164: 	my $submitid=$Apache::inputtags::response[-1];
  165: 
  166: 	my $response = $Apache::lonhomework::history{
  167: 			    "resource.$partid.$submitid.submission"};
  168: 	&Apache::lonxml::debug("hintgroup is using $response<br />\n");
  169: 
  170: 	my @args = ('type','tol','sig','ans_fmt','unit','calc','samples');
  171: 	my $args_ref =
  172: 	    &Apache::caparesponse::setup_capa_args($safeeval,$parstack,
  173: 						   \@args,$response);
  174: 
  175: 	my $hideunit=&Apache::response::get_response_param($partid.'_'.$submitid,'turnoffunit');
  176: 	if (lc($hideunit) eq "yes") { delete($$args_ref{'unit'}); }
  177: 
  178: 	if ($$tagstack[-1] eq 'formulahint') {
  179:             if ($$args_ref{'samples'}) {
  180:                 $$args_ref{'type'}='fml';
  181:             } else {
  182:                 $$args_ref{'type'}='math';
  183:             }
  184: 	} elsif ($$tagstack[-1] eq 'numericalhint') {
  185: 	    $$args_ref{'type'}='float';
  186: 	}
  187: 	&Apache::caparesponse::add_in_tag_answer($parstack,$safeeval);
  188: 	my %answer = &Apache::caparesponse::get_answer();
  189: 	my (@final_awards,@final_msgs,@ans_names);
  190: 	foreach my $ans_name (keys(%answer)) {
  191: 	    &Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
  192: 	
  193: 	    ${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=
  194: 		dclone($answer{$ans_name});
  195: 	    &Apache::caparesponse::setup_capa_response($args_ref,$response);
  196: 	    my ($result,@msgs) = 
  197: 		&Apache::run::run("&caparesponse_check_list()",$safeeval);
  198: 	    &Apache::lonxml::debug("checking $ans_name $result with $response");
  199: 	    &Apache::lonxml::debug('msgs are '.join(':',@msgs));
  200: 	    my ($awards)=split(/:/,$result);
  201: 	    my @awards= split(/,/,$awards);
  202: 	    my ($ad, $msg) = 
  203: 		&Apache::inputtags::finalizeawards(\@awards,\@msgs);
  204: 	    push(@final_awards,$ad);
  205: 	    push(@final_msgs,$msg);
  206: 	    push(@ans_names,$ans_name);
  207: 	}
  208: 	my ($ad, $msg, $ans_name) =
  209: 	    &Apache::inputtags::finalizeawards(\@final_awards,
  210: 					       \@final_msgs,
  211: 					       \@ans_names,1);
  212: 	if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') {
  213: 	    push(@Apache::hint::which,$hint_name);	
  214: 	}
  215: 	$result='';
  216:     } elsif ($target eq 'meta') {
  217: 	$result=&Apache::response::meta_package_write($token->[1]);
  218:     } elsif ($target eq 'edit') {
  219: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
  220:     }
  221:     &Apache::caparesponse::pop_answer();
  222:     &Apache::response::end_hintresponse();
  223:     return $result;
  224: }
  225: 
  226: sub start_formulahint {
  227:     return &start_numericalhint(@_);
  228: }
  229: 
  230: sub end_formulahint {
  231:     return &end_numericalhint(@_);
  232: }
  233: 
  234: sub start_mathhint {
  235:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  236:     #do everything in end, so intervening <responseparams> and <answer> work
  237:     &Apache::response::start_hintresponse($parstack,$safeeval);
  238:     &Apache::lonxml::register('Apache::response',('answer'));
  239:     my $result;
  240:     if ($target eq 'edit') {
  241:         $result.=&Apache::edit::tag_start($target,$token);
  242:         $result.=&Apache::edit::text_arg('Name:','name',$token);
  243:         $result.=&Apache::edit::select_arg('Algebra System:',
  244:                                            'cas',
  245:                                            ['maxima'],
  246:                                            $token);
  247:         $result.=&Apache::edit::text_arg('Argument Array:',
  248:                                          'args',$token);
  249:         $result.=&Apache::edit::end_row();
  250:         $result.=&Apache::edit::start_spanning_row();
  251:     } elsif ($target eq 'modified') {
  252:         my $constructtag;
  253:         $constructtag=&Apache::edit::get_new_args($token,$parstack,
  254:                                                   $safeeval,'name','cas',
  255:                                                   'args');
  256:         $result  = &Apache::edit::rebuild_tag($token);
  257:     } elsif ($target eq 'web') {
  258:         &Apache::response::reset_params();
  259:     }
  260:     return $result;
  261: }
  262: 
  263: sub end_mathhint {
  264:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  265:     my $result;
  266:     if ($target eq 'web') {
  267:         if (!$Apache::lonxml::default_homework_loaded) {
  268:             &Apache::lonxml::default_homework_load($safeeval);
  269:         }
  270: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  271:         &Apache::response::setup_params('mathhint',$safeeval);
  272:         my $partid=$Apache::inputtags::part;
  273:         my $submitid=$Apache::inputtags::response[-1];
  274:         my $response = $Apache::lonhomework::history{
  275:                             "resource.$partid.$submitid.submission"};
  276: 	
  277: 	my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
  278: 	my $award;
  279: 	if ($cas eq 'maxima') {
  280: 	    my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
  281: 	    $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args);
  282: 	}
  283:         if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
  284:             push (@Apache::hint::which,$name);
  285:         }
  286:         $result='';
  287:     } elsif ($target eq 'meta') {
  288:         $result=&Apache::response::meta_package_write($token->[1]);
  289:     } elsif ($target eq 'edit') {
  290:         $result.=&Apache::edit::end_row().&Apache::edit::end_table();
  291:     }
  292:     pop(@Apache::response::custom_answer);
  293:     pop(@Apache::response::custom_answer_type);
  294:     &Apache::response::end_hintresponse();
  295:     return $result;
  296: }
  297: 
  298: sub start_customhint {
  299:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  300:     #do everything in end, so intervening <responseparams> and <answer> work
  301:     &Apache::response::start_hintresponse($parstack,$safeeval);
  302:     &Apache::lonxml::register('Apache::response',('answer'));
  303:     my $result;
  304:     if ($target eq 'edit') {
  305:         $result.=&Apache::edit::tag_start($target,$token);
  306:         $result.=&Apache::edit::text_arg('Name:','name',$token);
  307:         $result.=&Apache::edit::end_row();
  308:         $result.=&Apache::edit::start_spanning_row();
  309:     } elsif ($target eq 'modified') {
  310:         my $constructtag;
  311:         $constructtag=&Apache::edit::get_new_args($token,$parstack,
  312:                                                   $safeeval,'name');
  313:         $result  = &Apache::edit::rebuild_tag($token);
  314:     } elsif ($target eq 'web') {
  315:         &Apache::response::reset_params();
  316:     }
  317:     return $result;
  318: }
  319: 
  320: sub end_customhint {
  321:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  322:     my $result;
  323:     if ($target eq 'web') {
  324:         if (!$Apache::lonxml::default_homework_loaded) {
  325:             &Apache::lonxml::default_homework_load($safeeval);
  326:         }
  327: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  328:         &Apache::response::setup_params('customhint',$safeeval);
  329:         my $partid=$Apache::inputtags::part;
  330:         my $submitid=$Apache::inputtags::response[-1];
  331:         my $response = $Apache::lonhomework::history{
  332:                             "resource.$partid.$submitid.submission"};
  333:         my $award;	
  334: 	if ( $response =~ /[^\s]/ && 
  335: 	     $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
  336: 	    if (!$Apache::lonxml::default_homework_loaded) {
  337: 		&Apache::lonxml::default_homework_load($safeeval);
  338: 	    }
  339: 	    ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
  340: 		$response;
  341: 	    
  342: 	    $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
  343: 	}
  344:         if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
  345:             push (@Apache::hint::which,$name);
  346:         }
  347:         $result='';
  348:     } elsif ($target eq 'meta') {
  349:         $result=&Apache::response::meta_package_write($token->[1]);
  350:     } elsif ($target eq 'edit') {
  351:         $result.=&Apache::edit::end_row().&Apache::edit::end_table();
  352:     }
  353:     pop(@Apache::response::custom_answer);
  354:     pop(@Apache::response::custom_answer_type);
  355:     &Apache::response::end_hintresponse();
  356:     return $result;
  357: }
  358: 
  359: sub start_stringhint {
  360:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  361:     #do everything in end, so intervening <responseparams> work
  362:     &Apache::response::start_hintresponse($parstack,$safeeval);
  363:     my $result;
  364:     if ($target eq 'edit') {
  365: 	$result.=&Apache::edit::tag_start($target,$token);
  366: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
  367: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token);
  368: 	$result.=&Apache::edit::select_arg('Type:','type',
  369: 			 [['cs','Case Sensitive'],['ci','Case Insensitive'],
  370: 			  ['mc','Case Insensitive, Any Order'],
  371: 			  ['re','Regular Expression']],$token);
  372: 	$result.=&Apache::edit::end_row();
  373: 	$result.=&Apache::edit::start_spanning_row();
  374:     } elsif ($target eq 'modified') {
  375: 	my $constructtag;
  376: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
  377: 						  $safeeval,'name','answer',
  378: 						  'type');
  379: 	$result  = &Apache::edit::rebuild_tag($token);
  380:     } elsif ($target eq 'web') {
  381: 	&Apache::response::reset_params();
  382:     }
  383:     return $result;
  384: }
  385: 
  386: sub end_stringhint {
  387:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  388:     my $result;
  389:     if ($target eq 'web') {
  390: 	if (!$Apache::lonxml::default_homework_loaded) {
  391: 	    &Apache::lonxml::default_homework_load($safeeval);
  392: 	}
  393: 	$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
  394: 	my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  395: 	&Apache::response::setup_params('stringhint',$safeeval);
  396: 	my $partid=$Apache::inputtags::part;
  397: 	my $id=$Apache::inputtags::hint[-1];
  398: 	#id submissions occurred under
  399: 	my $submitid=$Apache::inputtags::response[-1];
  400: 	my $response = $Apache::lonhomework::history{
  401: 			    "resource.$partid.$submitid.submission"};
  402: 	&Apache::lonxml::debug("hintgroup is using $response<br />\n");
  403: 	my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
  404: 	my ($ad,$msg);
  405: 	if ($type eq 're' ) {
  406: 	    my $answer=&Apache::lonxml::get_param('answer',$parstack,
  407: 						  $safeeval);
  408: 	    ${$safeeval->varglob('LONCAPA::response')}=$response;
  409: 	    my $compare='=';
  410: 	    if ($answer=~/^\s*NOT\s*/) {
  411: 		$answer=~s/^\s*NOT\s*//;
  412: 		$compare='!';
  413: 	    }
  414: 	    my $test='$LONCAPA::response'.$compare.'~m'.$answer;
  415: 	    &Apache::lonxml::debug("test $test");
  416: 	    $result = &Apache::run::run("return $test",$safeeval);
  417: 	    &Apache::lonxml::debug("current $response");
  418: 	    &Apache::lonxml::debug("current $answer");
  419: 	    $ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';
  420: 	} else { 
  421: 	    my @args = ('type');
  422: 	    my $args_ref = 
  423: 		&Apache::caparesponse::setup_capa_args($safeeval,$parstack,
  424: 						       \@args,$response);
  425:             if ($$args_ref{'type'} eq '') {
  426:                 $$args_ref{'type'} = 'ci';
  427:             }
  428: 	    &Apache::caparesponse::add_in_tag_answer($parstack,$safeeval);
  429: 	    my (@final_awards,@final_msgs,@ans_names);
  430: 	    my %answer = &Apache::caparesponse::get_answer();
  431: 	    foreach my $ans_name (keys(%answer)) {
  432: 		&Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
  433: 		${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$ans_name});
  434: 		my ($result, @msgs)=&Apache::run::run("&caparesponse_check_list()",$safeeval);
  435: 		&Apache::lonxml::debug('msgs are'.join(':',@msgs));
  436: 		my ($awards) = split(/:/,$result);
  437: 		my (@awards) = split(/,/,$awards);
  438: 		($ad,$msg) = 
  439: 		    &Apache::inputtags::finalizeawards(\@awards,\@msgs);
  440: 		push(@final_awards,$ad);
  441: 		push(@final_msgs,$msg);
  442: 		push(@ans_names,$ans_name);
  443: 		&Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
  444: 	    }
  445: 	    my ($ad, $msg, $ans_name) = 
  446: 		&Apache::inputtags::finalizeawards(\@final_awards,
  447: 						   \@final_msgs,
  448: 						   \@ans_names,1);
  449: 	}
  450: 	if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { 
  451: 	    push(@Apache::hint::which,$hint_name);
  452: 	}
  453: 	$result='';
  454:     } elsif ($target eq 'meta') {
  455: 	$result=&Apache::response::meta_package_write($token->[1]);
  456:     } elsif ($target eq 'edit') {
  457: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
  458:     }
  459:     &Apache::response::end_hintresponse();
  460:     return $result;
  461: }
  462: 
  463: # a part shows if it is on, if no specific parts are on, then default shows
  464: sub start_hintpart {
  465:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  466: 
  467:     my $show ='0';
  468:     my $result = '';
  469:     if ($target eq 'web') {
  470: 	my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
  471: 	&Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
  472: 	if ( $on eq 'default' && $#Apache::hint::which == '-1') {
  473: 	    $show=1;
  474: 	} else {
  475: 	    my $which;
  476: 	    foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
  477: 	}
  478: 	if (!$show) {
  479: 	    &Apache::lonxml::get_all_text("/hintpart",$parser,$style);
  480: 	}
  481:     } elsif ($target eq 'grade') {
  482: 	&Apache::lonxml::get_all_text("/hintpart",$parser,$style);
  483:     } elsif ($target eq 'edit') {
  484: 	$result.= &Apache::edit::tag_start($target,$token);
  485: 	$result.= &Apache::edit::text_arg('On:','on',$token);
  486: 	$result.= &Apache::edit::end_row();
  487: 	$result.= &Apache::edit::start_spanning_row();
  488:     } elsif ($target eq 'modified') {
  489: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  490: 						     $safeeval,'on');
  491: 	if ($constructtag) {
  492: 	    $result = &Apache::edit::rebuild_tag($token);
  493: 	}
  494:     }
  495:     return $result;
  496: }
  497: 
  498: sub end_hintpart {
  499:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  500:     my $result;
  501:     if ($target eq 'edit') {
  502: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
  503:     }
  504:     return $result;
  505: }
  506: 
  507: sub start_optionhint {
  508:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  509:     my $result;
  510:     &Apache::response::start_hintresponse($parstack,$safeeval);
  511:     if ($target eq 'edit') {
  512: 	$result.=&Apache::edit::tag_start($target,$token);
  513: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
  514: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token,40);
  515: 	$result.=&Apache::edit::text_arg('Concept:','concept',$token,50);
  516:     } elsif ($target eq 'modified') {
  517: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  518: 						     $safeeval,'name',
  519: 						     'answer','concept');
  520: 	if ($constructtag) {
  521: 	    $result  = &Apache::edit::rebuild_tag($token);
  522: 	}
  523:     } elsif ($target eq 'meta') {
  524: 	$result=&Apache::response::meta_package_write('numericalhint');
  525:     }
  526:     return $result;
  527: }
  528: 
  529: sub end_optionhint {
  530:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  531:     my $result;
  532:     if ($target eq 'web') {
  533: 	my ($foilmatch,$conceptmatch)=(-1,-1);
  534: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  535: 	my $partid=$Apache::inputtags::part;
  536: 	#id submissions occurred under
  537: 	my $submitid=$Apache::inputtags::response[-1];
  538: 	my $part_id="$partid.$submitid";
  539: 	my %answer;
  540: 	my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
  541: 	if ($answer) {
  542: 	    eval('%answer ='.$answer);
  543: 	    &Apache::lonxml::debug("answwer hash");
  544: 	    &Apache::lonhomework::showhash(%answer);
  545: 	    my $response = $Apache::lonhomework::history{
  546: 				            "resource.$part_id.submission"};
  547: 	    my %response=&Apache::lonnet::str2hash($response);
  548: 	    &Apache::lonhomework::showhash(%response);
  549: 	    foreach my $foil (keys(%answer)) {
  550: 		$foilmatch=1;
  551: 		if ($answer{$foil} ne $response{$foil}) {$foilmatch=0;last;}
  552: 	    }
  553: 	}
  554: 	my %concept;
  555: 	my $constr=&Apache::lonxml::get_param('concept',$parstack,$safeeval);
  556: 	if ( $constr ) { eval('%concept ='.$constr);	}
  557: 	my $response = $Apache::lonhomework::history{
  558: 					"resource.$part_id.submissiongrading"};
  559: 	my %response=&Apache::lonnet::str2hash($response);
  560: 	foreach my $concept (keys(%concept)) {
  561: 	    my $compare;
  562: 	    if ($concept{$concept} eq 'correct') {$compare=1}else{$compare=0}
  563: 	    $conceptmatch=1;
  564: 	    if (ref($Apache::hint::option{"$part_id.concepts"})) {
  565: 		foreach my $foil (@{ $Apache::hint::option{"$part_id.concept.$concept"} }) {
  566: 		    &Apache::lonxml::debug("compare -$foil- -$response{$foil}-$compare-");
  567: 		    if ( exists($response{$foil}) && 
  568: 			 $response{$foil} ne $compare) {$conceptmatch=0;last;}
  569: 		}
  570: 	    } else {
  571: 		$conceptmatch=0;
  572: 	    }
  573: 	    if ($conceptmatch eq '0') { last; }
  574: 	}
  575: 	if ( ($conceptmatch eq '-1' || $conceptmatch eq '1') &&
  576: 	     ($foilmatch    eq '-1' || $foilmatch    eq '1') ) {
  577: 	    push(@Apache::hint::which,$name);
  578: 	}
  579:     } elsif ($target eq 'edit') {
  580: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
  581:     }
  582:     &Apache::response::end_hintresponse();
  583:     return $result;
  584: }
  585: 
  586: sub start_radiobuttonhint {
  587:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  588:     my $result;
  589:     &Apache::response::start_hintresponse($parstack,$safeeval);
  590:     if ($target eq 'edit') {
  591: 	$result.=&Apache::edit::tag_start($target,$token);
  592: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
  593: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token);
  594:     } elsif ($target eq 'modified') {
  595: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  596: 						     $safeeval,'name',
  597: 						     'answer');
  598: 	if ($constructtag) {
  599: 	    $result  = &Apache::edit::rebuild_tag($token);
  600: 	}
  601:     } elsif ($target eq 'meta') {
  602: 	$result=&Apache::response::meta_package_write('numericalhint');
  603:     }
  604:     return $result;
  605: }
  606: 
  607: sub end_radiobuttonhint {
  608:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  609:     my $result;
  610:     if ($target eq 'web') {
  611: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  612: 	my @answer;
  613: 	my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
  614: 	eval('@answer ='.$answer);
  615: 	my $partid=$Apache::inputtags::part;
  616: 	#id submissions occurred under
  617: 	my $submitid=$Apache::inputtags::response[-1];
  618: 	my $part_id="$partid.$submitid";
  619: 	my $response = $Apache::lonhomework::history{
  620: 			    "resource.$part_id.submission"};
  621: 	($response)=&Apache::lonnet::str2hash($response);
  622: 	&Apache::lonxml::debug("response is $response");
  623: 	
  624: 	if ($answer[0] eq 'foil') {
  625: 	    shift(@answer);
  626: 	    foreach my $answer (@answer) {
  627: 		if ($response eq $answer) {
  628: 		    push (@Apache::hint::which,$name);
  629: 		    last;
  630: 		}
  631: 	    }
  632: 	} elsif ($answer[0] eq 'concept') {
  633: 	    shift(@answer);
  634: 	    foreach my $answer (@answer) {
  635: 		if (ref($Apache::hint::radiobutton{"$part_id.concept.".$answer})) {
  636: 		    my @names=@{ $Apache::hint::radiobutton{"$part_id.concept.".$answer} };
  637: 		    if (grep(/^\Q$response\E$/,@names)) {
  638: 			push(@Apache::hint::which,$name);
  639: 			last;
  640: 		    }
  641: 		}
  642: 	    }
  643: 	}
  644:     } elsif ($target eq 'edit') {
  645: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
  646:     }
  647:     &Apache::response::end_hintresponse();
  648:     return $result;
  649: }
  650: 1;
  651: __END__

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