Annotation of loncom/homework/hint.pm, revision 1.79

1.21      albertel    1: # The LearningOnline Network with CAPA 
                      2: # implements the tags that control the hints
                      3: #
1.79    ! raeburn     4: # $Id: hint.pm,v 1.78 2011/06/08 20:38:47 www Exp $
1.21      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: #
1.33      albertel   10: # LON-CAPA me&aree software; you can redistribute it and/or modify
1.21      albertel   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: 
1.73      jms        29: 
                     30: 
1.1       albertel   31: package Apache::hinttags; 
                     32: 
                     33: use strict;
1.65      albertel   34: use Apache::lonnet();
1.6       albertel   35: use capa;
1.65      albertel   36: use Apache::caparesponse();
1.63      www        37: use Apache::lonmaxima();
1.75      www        38: use Apache::lonr();
1.76      www        39: use Apache::chemresponse();
1.63      www        40: use Apache::response();
1.53      albertel   41: use Apache::lonlocal;
1.65      albertel   42: use Storable qw(dclone);
1.1       albertel   43: 
1.25      harris41   44: BEGIN {
1.76      www        45:     &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint','stringhint','formulahint','optionhint','radiobuttonhint','mathhint','customhint','reactionhint','organichint'));
1.1       albertel   46: }
                     47: 
1.2       albertel   48: 
1.15      albertel   49: @Apache::hint::which=();
1.1       albertel   50: sub start_hintgroup {
1.39      albertel   51:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     52:     my $skiptoend='0';
                     53:     my $result;
                     54: 
                     55:     if ($target eq 'web') {
                     56: 	my $id=$Apache::inputtags::part;
                     57: 	my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
                     58: 	if ( $numtries eq '') { $numtries = 0; }
1.52      albertel   59: 	my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
1.39      albertel   60: 	&Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
1.53      albertel   61: 	my $gradestatus=
                     62: 	    $Apache::lonhomework::history{"resource.$id.solved"};
                     63: 	my $showoncorrect=lc(&Apache::lonxml::get_param('showoncorrect',$parstack,$safeeval));	
                     64: 	&Apache::lonxml::debug("onc orrect $showoncorrect, $gradestatus");
1.58      albertel   65: 	if ( ($showoncorrect ne 'yes' && &Apache::response::show_answer()) ||
1.53      albertel   66: 	     ( $numtries < $hinttries) ) {
                     67: 	    &Apache::lonxml::debug("Grabbin all");
1.61      albertel   68: 	    &Apache::lonxml::get_all_text("/hintgroup",$parser,$style);
1.39      albertel   69: 	}
1.40      albertel   70: 	&Apache::lonxml::startredirection;
1.39      albertel   71:     } elsif ($target eq 'tex') {
                     72: 	$result .= '\keephidden{';
1.53      albertel   73:     } elsif ($target eq 'edit') {
                     74: 	$result.=&Apache::edit::tag_start($target,$token);
1.72      bisitz     75: 	$result.=&Apache::edit::select_arg('Show hint even if problem Correct:','showoncorrect',['no','yes'],$token);
1.53      albertel   76: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                     77:     } elsif ($target eq 'modified') {
                     78: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'showoncorrect');
                     79:        if ($constructtag) {
                     80:            $result =&Apache::edit::rebuild_tag($token);
                     81:        }
1.20      albertel   82:     }
1.39      albertel   83:     @Apache::hint::which=();
1.77      www        84:     if (($#Apache::functionplotresponse::failedrules>=0) && ($target eq 'web')) {
                     85:         @Apache::hint::which=@Apache::functionplotresponse::failedrules;
                     86:         undef @Apache::functionplotresponse::failedrules;
                     87:     }
1.39      albertel   88:     return $result;
1.1       albertel   89: }
                     90: 
                     91: sub end_hintgroup {
1.39      albertel   92:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     93:     my $result;
1.20      albertel   94: 
1.39      albertel   95:     if ($target eq 'web') {
                     96: 	my $id=$Apache::inputtags::part;
                     97: 	my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
                     98: 	if ( $numtries eq '') { $numtries = 0; }
1.52      albertel   99: 	my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
1.39      albertel  100: 	&Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
1.40      albertel  101: 	my $hinttext=&Apache::lonxml::endredirection;
                    102: 	if ($Apache::lonhomework::type ne 'exam' &&
1.41      albertel  103: 	    $numtries >= $hinttries && $hinttext =~/\S/) {
1.40      albertel  104: 	    $result='<table bgcolor="#dddddd"><tr><td>'.
                    105: 		$hinttext.'</td></tr></table>';
1.38      albertel  106: 	}
1.39      albertel  107:     } elsif ($target eq 'edit') {
1.62      albertel  108: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
1.39      albertel  109:     } elsif ($target eq 'tex') {
                    110: 	$result .= '}';
1.19      albertel  111:     }
1.39      albertel  112:     @Apache::hint::which=();
                    113:     return $result;
1.3       albertel  114: }
                    115: 
                    116: sub start_numericalhint {
1.39      albertel  117:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    118:     #do everything in end, so intervening <responseparams> work
                    119:     &Apache::response::start_hintresponse($parstack,$safeeval);
1.66      albertel  120:     &Apache::caparesponse::push_answer();
1.39      albertel  121:     my $result;
                    122:     if ($target eq 'edit') {
                    123: 	$result.=&Apache::edit::tag_start($target,$token);
                    124: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
                    125: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token);
                    126: 	if ($token->[1] eq 'numericalhint') {
                    127: 	    $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
                    128: 		&Apache::loncommon::help_open_topic('Physical_Units');
                    129: 	    $result.=&Apache::edit::text_arg('Format:','format',$token,4).
                    130: 		&Apache::loncommon::help_open_topic('Numerical_Response_Format');
                    131: 	} elsif ($token->[1] eq 'formulahint') {
1.65      albertel  132: 	    $result.=&Apache::edit::text_arg('Sample Points:','samples',
                    133: 					     $token,40).
                    134: 	        &Apache::loncommon::help_open_topic('Formula_Response_Sampling');
1.39      albertel  135: 	}
1.78      www       136:         $result.=&Apache::edit::text_arg('Pre-Processor Subroutine:','preprocess',
                    137:                                              $token,10);
1.39      albertel  138: 	$result.=&Apache::edit::end_row();
                    139: 	$result.=&Apache::edit::start_spanning_row();
                    140:     } elsif ($target eq 'modified') {
                    141: 	my $constructtag;
                    142: 	if ($token->[1] eq 'numericalhint') {
                    143: 	    $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    144: 						     $safeeval,'name',
1.78      www       145: 						     'answer','unit','format','preprocess');
1.39      albertel  146: 	} elsif ($token->[1] eq 'formulahint') {
                    147: 	    $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    148: 						     $safeeval,'name','answer',
1.78      www       149: 						     'samples','preprocess');
1.39      albertel  150: 	}
                    151: 	if ($constructtag) {
                    152: 	    $result  = &Apache::edit::rebuild_tag($token);
                    153: 	}
                    154:     } elsif ($target eq 'web') {
                    155: 	&Apache::response::reset_params();
1.28      albertel  156:     }
1.39      albertel  157:     return $result;
1.3       albertel  158: }
                    159: 
                    160: sub end_numericalhint {
1.39      albertel  161:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    162:     my $result;
                    163:     if ($target eq 'web') {
                    164: 	if (!$Apache::lonxml::default_homework_loaded) {
                    165: 	    &Apache::lonxml::default_homework_load($safeeval);
                    166: 	}
                    167: 	$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
1.65      albertel  168: 	my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.48      albertel  169: 	&Apache::response::setup_params('numericalhint',$safeeval);
1.65      albertel  170: 
1.39      albertel  171: 	my $partid=$Apache::inputtags::part;
1.60      albertel  172: 	my $id=$Apache::inputtags::hint[-1];
1.69      bisitz    173: 	#id submissions occurred under
1.60      albertel  174: 	my $submitid=$Apache::inputtags::response[-1];
1.65      albertel  175: 
1.39      albertel  176: 	my $response = $Apache::lonhomework::history{
1.18      albertel  177: 			    "resource.$partid.$submitid.submission"};
1.39      albertel  178: 	&Apache::lonxml::debug("hintgroup is using $response<br />\n");
1.65      albertel  179: 
                    180: 	my @args = ('type','tol','sig','ans_fmt','unit','calc','samples');
                    181: 	my $args_ref =
                    182: 	    &Apache::caparesponse::setup_capa_args($safeeval,$parstack,
                    183: 						   \@args,$response);
                    184: 
1.54      albertel  185: 	my $hideunit=&Apache::response::get_response_param($partid.'_'.$submitid,'turnoffunit');
1.51      albertel  186: 	if (lc($hideunit) eq "yes") { delete($$args_ref{'unit'}); }
1.65      albertel  187: 
1.79    ! raeburn   188:         my $stringify;
1.43      albertel  189: 	if ($$tagstack[-1] eq 'formulahint') {
1.67      www       190:             if ($$args_ref{'samples'}) {
                    191:                 $$args_ref{'type'}='fml';
1.79    ! raeburn   192:                 $stringify = 1;
1.67      www       193:             } else {
                    194:                 $$args_ref{'type'}='math';
                    195:             }
1.43      albertel  196: 	} elsif ($$tagstack[-1] eq 'numericalhint') {
1.51      albertel  197: 	    $$args_ref{'type'}='float';
1.79    ! raeburn   198:             $stringify = 1;
1.39      albertel  199: 	}
1.79    ! raeburn   200: 	&Apache::caparesponse::add_in_tag_answer($parstack,$safeeval,$stringify);
1.65      albertel  201: 	my %answer = &Apache::caparesponse::get_answer();
                    202: 	my (@final_awards,@final_msgs,@ans_names);
                    203: 	foreach my $ans_name (keys(%answer)) {
                    204: 	    &Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
                    205: 	
                    206: 	    ${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=
                    207: 		dclone($answer{$ans_name});
                    208: 	    &Apache::caparesponse::setup_capa_response($args_ref,$response);
                    209: 	    my ($result,@msgs) = 
1.71      raeburn   210: 		&Apache::run::run("&caparesponse_check_list()",$safeeval);
1.65      albertel  211: 	    &Apache::lonxml::debug("checking $ans_name $result with $response");
                    212: 	    &Apache::lonxml::debug('msgs are '.join(':',@msgs));
                    213: 	    my ($awards)=split(/:/,$result);
                    214: 	    my @awards= split(/,/,$awards);
                    215: 	    my ($ad, $msg) = 
                    216: 		&Apache::inputtags::finalizeawards(\@awards,\@msgs);
                    217: 	    push(@final_awards,$ad);
                    218: 	    push(@final_msgs,$msg);
                    219: 	    push(@ans_names,$ans_name);
                    220: 	}
                    221: 	my ($ad, $msg, $ans_name) =
                    222: 	    &Apache::inputtags::finalizeawards(\@final_awards,
                    223: 					       \@final_msgs,
                    224: 					       \@ans_names,1);
                    225: 	if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') {
                    226: 	    push(@Apache::hint::which,$hint_name);	
                    227: 	}
1.39      albertel  228: 	$result='';
                    229:     } elsif ($target eq 'meta') {
                    230: 	$result=&Apache::response::meta_package_write($token->[1]);
                    231:     } elsif ($target eq 'edit') {
1.62      albertel  232: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
1.18      albertel  233:     }
1.66      albertel  234:     &Apache::caparesponse::pop_answer();
1.39      albertel  235:     &Apache::response::end_hintresponse();
                    236:     return $result;
1.28      albertel  237: }
                    238: 
1.51      albertel  239: sub start_formulahint {
1.35      albertel  240:     return &start_numericalhint(@_);
1.28      albertel  241: }
                    242: 
1.51      albertel  243: sub end_formulahint {
1.35      albertel  244:     return &end_numericalhint(@_);
1.28      albertel  245: }
                    246: 
1.63      www       247: sub start_mathhint {
                    248:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    249:     #do everything in end, so intervening <responseparams> and <answer> work
                    250:     &Apache::response::start_hintresponse($parstack,$safeeval);
                    251:     &Apache::lonxml::register('Apache::response',('answer'));
                    252:     my $result;
                    253:     if ($target eq 'edit') {
                    254:         $result.=&Apache::edit::tag_start($target,$token);
                    255:         $result.=&Apache::edit::text_arg('Name:','name',$token);
                    256:         $result.=&Apache::edit::select_arg('Algebra System:',
                    257:                                            'cas',
1.75      www       258:                                            ['maxima','R'],
1.63      www       259:                                            $token);
                    260:         $result.=&Apache::edit::text_arg('Argument Array:',
                    261:                                          'args',$token);
                    262:         $result.=&Apache::edit::end_row();
                    263:         $result.=&Apache::edit::start_spanning_row();
                    264:     } elsif ($target eq 'modified') {
                    265:         my $constructtag;
                    266:         $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    267:                                                   $safeeval,'name','cas',
                    268:                                                   'args');
                    269:         $result  = &Apache::edit::rebuild_tag($token);
                    270:     } elsif ($target eq 'web') {
                    271:         &Apache::response::reset_params();
                    272:     }
                    273:     return $result;
                    274: }
                    275: 
                    276: sub end_mathhint {
                    277:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    278:     my $result;
                    279:     if ($target eq 'web') {
                    280:         if (!$Apache::lonxml::default_homework_loaded) {
                    281:             &Apache::lonxml::default_homework_load($safeeval);
                    282:         }
                    283: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    284:         &Apache::response::setup_params('mathhint',$safeeval);
                    285:         my $partid=$Apache::inputtags::part;
                    286:         my $submitid=$Apache::inputtags::response[-1];
                    287:         my $response = $Apache::lonhomework::history{
                    288:                             "resource.$partid.$submitid.submission"};
                    289: 	
                    290: 	my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
                    291: 	my $award;
                    292: 	if ($cas eq 'maxima') {
                    293: 	    my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
                    294: 	    $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args);
                    295: 	}
1.75      www       296:         if ($cas eq 'R') {
                    297:             my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
                    298:             $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args);
                    299:         }
1.63      www       300:         if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
                    301:             push (@Apache::hint::which,$name);
                    302:         }
                    303:         $result='';
                    304:     } elsif ($target eq 'meta') {
                    305:         $result=&Apache::response::meta_package_write($token->[1]);
                    306:     } elsif ($target eq 'edit') {
                    307:         $result.=&Apache::edit::end_row().&Apache::edit::end_table();
                    308:     }
                    309:     pop(@Apache::response::custom_answer);
                    310:     pop(@Apache::response::custom_answer_type);
                    311:     &Apache::response::end_hintresponse();
                    312:     return $result;
                    313: }
                    314: 
1.64      www       315: sub start_customhint {
                    316:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    317:     #do everything in end, so intervening <responseparams> and <answer> work
                    318:     &Apache::response::start_hintresponse($parstack,$safeeval);
                    319:     &Apache::lonxml::register('Apache::response',('answer'));
                    320:     my $result;
                    321:     if ($target eq 'edit') {
                    322:         $result.=&Apache::edit::tag_start($target,$token);
                    323:         $result.=&Apache::edit::text_arg('Name:','name',$token);
                    324:         $result.=&Apache::edit::end_row();
                    325:         $result.=&Apache::edit::start_spanning_row();
                    326:     } elsif ($target eq 'modified') {
                    327:         my $constructtag;
                    328:         $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    329:                                                   $safeeval,'name');
                    330:         $result  = &Apache::edit::rebuild_tag($token);
                    331:     } elsif ($target eq 'web') {
                    332:         &Apache::response::reset_params();
                    333:     }
                    334:     return $result;
                    335: }
                    336: 
                    337: sub end_customhint {
                    338:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    339:     my $result;
                    340:     if ($target eq 'web') {
                    341:         if (!$Apache::lonxml::default_homework_loaded) {
                    342:             &Apache::lonxml::default_homework_load($safeeval);
                    343:         }
                    344: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    345:         &Apache::response::setup_params('customhint',$safeeval);
                    346:         my $partid=$Apache::inputtags::part;
                    347:         my $submitid=$Apache::inputtags::response[-1];
                    348:         my $response = $Apache::lonhomework::history{
                    349:                             "resource.$partid.$submitid.submission"};
                    350:         my $award;	
                    351: 	if ( $response =~ /[^\s]/ && 
                    352: 	     $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
                    353: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    354: 		&Apache::lonxml::default_homework_load($safeeval);
                    355: 	    }
                    356: 	    ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
                    357: 		$response;
                    358: 	    
                    359: 	    $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
                    360: 	}
                    361:         if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
                    362:             push (@Apache::hint::which,$name);
                    363:         }
                    364:         $result='';
                    365:     } elsif ($target eq 'meta') {
                    366:         $result=&Apache::response::meta_package_write($token->[1]);
                    367:     } elsif ($target eq 'edit') {
                    368:         $result.=&Apache::edit::end_row().&Apache::edit::end_table();
                    369:     }
                    370:     pop(@Apache::response::custom_answer);
                    371:     pop(@Apache::response::custom_answer_type);
                    372:     &Apache::response::end_hintresponse();
                    373:     return $result;
                    374: }
                    375: 
1.51      albertel  376: sub start_stringhint {
                    377:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    378:     #do everything in end, so intervening <responseparams> work
                    379:     &Apache::response::start_hintresponse($parstack,$safeeval);
                    380:     my $result;
                    381:     if ($target eq 'edit') {
                    382: 	$result.=&Apache::edit::tag_start($target,$token);
                    383: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
                    384: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token);
                    385: 	$result.=&Apache::edit::select_arg('Type:','type',
                    386: 			 [['cs','Case Sensitive'],['ci','Case Insensitive'],
                    387: 			  ['mc','Case Insensitive, Any Order'],
                    388: 			  ['re','Regular Expression']],$token);
1.78      www       389:         $result.=&Apache::edit::text_arg('Pre-Processor Subroutine:','preprocess',
                    390:                                              $token,10);
1.51      albertel  391: 	$result.=&Apache::edit::end_row();
                    392: 	$result.=&Apache::edit::start_spanning_row();
                    393:     } elsif ($target eq 'modified') {
                    394: 	my $constructtag;
                    395: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
                    396: 						  $safeeval,'name','answer',
1.78      www       397: 						  'type','preprocess');
1.51      albertel  398: 	$result  = &Apache::edit::rebuild_tag($token);
                    399:     } elsif ($target eq 'web') {
                    400: 	&Apache::response::reset_params();
                    401:     }
                    402:     return $result;
1.28      albertel  403: }
                    404: 
1.51      albertel  405: sub end_stringhint {
                    406:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    407:     my $result;
                    408:     if ($target eq 'web') {
                    409: 	if (!$Apache::lonxml::default_homework_loaded) {
                    410: 	    &Apache::lonxml::default_homework_load($safeeval);
                    411: 	}
                    412: 	$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
1.65      albertel  413: 	my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.51      albertel  414: 	&Apache::response::setup_params('stringhint',$safeeval);
                    415: 	my $partid=$Apache::inputtags::part;
1.60      albertel  416: 	my $id=$Apache::inputtags::hint[-1];
1.69      bisitz    417: 	#id submissions occurred under
1.60      albertel  418: 	my $submitid=$Apache::inputtags::response[-1];
1.51      albertel  419: 	my $response = $Apache::lonhomework::history{
                    420: 			    "resource.$partid.$submitid.submission"};
                    421: 	&Apache::lonxml::debug("hintgroup is using $response<br />\n");
1.65      albertel  422: 	my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
1.51      albertel  423: 	my ($ad,$msg);
                    424: 	if ($type eq 're' ) {
1.65      albertel  425: 	    my $answer=&Apache::lonxml::get_param('answer',$parstack,
                    426: 						  $safeeval);
1.51      albertel  427: 	    ${$safeeval->varglob('LONCAPA::response')}=$response;
1.57      albertel  428: 	    my $compare='=';
                    429: 	    if ($answer=~/^\s*NOT\s*/) {
                    430: 		$answer=~s/^\s*NOT\s*//;
                    431: 		$compare='!';
                    432: 	    }
                    433: 	    my $test='$LONCAPA::response'.$compare.'~m'.$answer;
                    434: 	    &Apache::lonxml::debug("test $test");
                    435: 	    $result = &Apache::run::run("return $test",$safeeval);
1.51      albertel  436: 	    &Apache::lonxml::debug("current $response");
                    437: 	    &Apache::lonxml::debug("current $answer");
                    438: 	    $ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';
                    439: 	} else { 
1.65      albertel  440: 	    my @args = ('type');
                    441: 	    my $args_ref = 
                    442: 		&Apache::caparesponse::setup_capa_args($safeeval,$parstack,
                    443: 						       \@args,$response);
1.71      raeburn   444:             if ($$args_ref{'type'} eq '') {
                    445:                 $$args_ref{'type'} = 'ci';
                    446:             }
1.79    ! raeburn   447:             my $stringify;
        !           448:             if ($$args_ref{'type'} ne 're') {
        !           449:                 $stringify = 1;
        !           450:             }
        !           451: 	    &Apache::caparesponse::add_in_tag_answer($parstack,$safeeval,$stringify);
1.65      albertel  452: 	    my (@final_awards,@final_msgs,@ans_names);
                    453: 	    my %answer = &Apache::caparesponse::get_answer();
                    454: 	    foreach my $ans_name (keys(%answer)) {
                    455: 		&Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
                    456: 		${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$ans_name});
1.71      raeburn   457: 		my ($result, @msgs)=&Apache::run::run("&caparesponse_check_list()",$safeeval);
1.65      albertel  458: 		&Apache::lonxml::debug('msgs are'.join(':',@msgs));
                    459: 		my ($awards) = split(/:/,$result);
                    460: 		my (@awards) = split(/,/,$awards);
                    461: 		($ad,$msg) = 
                    462: 		    &Apache::inputtags::finalizeawards(\@awards,\@msgs);
                    463: 		push(@final_awards,$ad);
                    464: 		push(@final_msgs,$msg);
                    465: 		push(@ans_names,$ans_name);
                    466: 		&Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
1.51      albertel  467: 	    }
1.65      albertel  468: 	    my ($ad, $msg, $ans_name) = 
                    469: 		&Apache::inputtags::finalizeawards(\@final_awards,
                    470: 						   \@final_msgs,
                    471: 						   \@ans_names,1);
1.51      albertel  472: 	}
                    473: 	if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { 
1.65      albertel  474: 	    push(@Apache::hint::which,$hint_name);
1.51      albertel  475: 	}
                    476: 	$result='';
                    477:     } elsif ($target eq 'meta') {
                    478: 	$result=&Apache::response::meta_package_write($token->[1]);
                    479:     } elsif ($target eq 'edit') {
1.62      albertel  480: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
1.51      albertel  481:     }
                    482:     &Apache::response::end_hintresponse();
                    483:     return $result;
1.1       albertel  484: }
                    485: 
1.76      www       486: # reactionhint
                    487: 
                    488: sub start_reactionhint {
                    489:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    490:     #do everything in end, so intervening <responseparams> work
                    491:     &Apache::response::start_hintresponse($parstack,$safeeval);
                    492:     my $result;
                    493:     if ($target eq 'edit') {
                    494:         $result.=&Apache::edit::tag_start($target,$token);
                    495:         $result.=&Apache::edit::text_arg('Name:','name',$token);
                    496:         $result.=&Apache::edit::text_arg('Answer:','answer',$token);
                    497:         $result.=&Apache::edit::end_row();
                    498:         $result.=&Apache::edit::start_spanning_row();
                    499:     } elsif ($target eq 'modified') {
                    500:         my $constructtag;
                    501:         $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    502:                                                   $safeeval,'name','answer',
                    503:                                                   );
                    504:         $result  = &Apache::edit::rebuild_tag($token);
                    505:     } elsif ($target eq 'web') {
                    506:         &Apache::response::reset_params();
                    507:     }
                    508:     return $result;
                    509: }
                    510: 
                    511: sub end_reactionhint {
                    512:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    513:     my $result;
                    514:     if ($target eq 'web') {
                    515:         if (!$Apache::lonxml::default_homework_loaded) {
                    516:             &Apache::lonxml::default_homework_load($safeeval);
                    517:         }
                    518:         my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    519:         &Apache::response::setup_params('reactionhint',$safeeval);
                    520:         my $partid=$Apache::inputtags::part;
                    521:         my $id=$Apache::inputtags::hint[-1];
                    522:         #id submissions occurred under
                    523:         my $submitid=$Apache::inputtags::response[-1];
                    524:         my $response = $Apache::lonhomework::history{
                    525:                             "resource.$partid.$submitid.submission"};
                    526:         &Apache::lonxml::debug("hintgroup is using $response<br />\n");
                    527:         my $answer=&Apache::lonxml::get_param('answer',$parstack,
                    528:                                                   $safeeval);
                    529:         &Apache::lonxml::debug("current $response");
                    530:         &Apache::lonxml::debug("current $answer");
                    531:         if (&Apache::chemresponse::chem_standard_order($response) eq 
                    532:             &Apache::chemresponse::chem_standard_order($answer)) {
                    533:             push(@Apache::hint::which,$hint_name);
                    534:         }
                    535:         $result='';
                    536:     } elsif ($target eq 'meta') {
                    537:         $result=&Apache::response::meta_package_write($token->[1]);
                    538:     } elsif ($target eq 'edit') {
                    539:         $result.=&Apache::edit::end_row().&Apache::edit::end_table();
                    540:     }
                    541:     &Apache::response::end_hintresponse();
                    542:     return $result;
                    543: }
                    544: 
                    545: # organichint
                    546: 
                    547: sub start_organichint {
                    548:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    549:     #do everything in end, so intervening <responseparams> work
                    550:     &Apache::response::start_hintresponse($parstack,$safeeval);
                    551:     my $result;
                    552:     if ($target eq 'edit') {
                    553:         $result.=&Apache::edit::tag_start($target,$token);
                    554:         $result.=&Apache::edit::text_arg('Name:','name',$token);
                    555:         $result.=&Apache::edit::text_arg('Answer:','answer',$token);
                    556:         $result.=&Apache::edit::end_row();
                    557:         $result.=&Apache::edit::start_spanning_row();
                    558:     } elsif ($target eq 'modified') {
                    559:         my $constructtag;
                    560:         $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    561:                                                   $safeeval,'name','answer',
                    562:                                                   );
                    563:         $result  = &Apache::edit::rebuild_tag($token);
                    564:     } elsif ($target eq 'web') {
                    565:         &Apache::response::reset_params();
                    566:     }
                    567:     return $result;
                    568: }
                    569: 
                    570: sub end_organichint {
                    571:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    572:     my $result;
                    573:     if ($target eq 'web') {
                    574:         if (!$Apache::lonxml::default_homework_loaded) {
                    575:             &Apache::lonxml::default_homework_load($safeeval);
                    576:         }
                    577:         my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    578:         &Apache::response::setup_params('organichint',$safeeval);
                    579:         my $partid=$Apache::inputtags::part;
                    580:         my $id=$Apache::inputtags::hint[-1];
                    581:         #id submissions occurred under
                    582:         my $submitid=$Apache::inputtags::response[-1];
                    583:         my $response = $Apache::lonhomework::history{
                    584:                             "resource.$partid.$submitid.submission"};
                    585:         &Apache::lonxml::debug("hintgroup is using $response<br />\n");
                    586:         my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
                    587:         my %previous = &Apache::response::check_for_previous($response,$partid,$id);
                    588:         foreach my $answer (@answers) {
                    589:             &Apache::lonxml::debug("submitted a $response for $answer<br \>\n");
                    590:             if ($response eq $answer) {
                    591:                push(@Apache::hint::which,$hint_name);
                    592:                last;
                    593:             }
                    594:         }
                    595:         $result='';
                    596:     } elsif ($target eq 'meta') {
                    597:         $result=&Apache::response::meta_package_write($token->[1]);
                    598:     } elsif ($target eq 'edit') {
                    599:         $result.=&Apache::edit::end_row().&Apache::edit::end_table();
                    600:     }
                    601:     &Apache::response::end_hintresponse();
                    602:     return $result;
                    603: }
                    604: 
                    605: 
1.2       albertel  606: # a part shows if it is on, if no specific parts are on, then default shows
1.1       albertel  607: sub start_hintpart {
1.39      albertel  608:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.15      albertel  609: 
1.39      albertel  610:     my $show ='0';
                    611:     my $result = '';
                    612:     if ($target eq 'web') {
                    613: 	my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
                    614: 	&Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
                    615: 	if ( $on eq 'default' && $#Apache::hint::which == '-1') {
                    616: 	    $show=1;
                    617: 	} else {
                    618: 	    my $which;
                    619: 	    foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
                    620: 	}
                    621: 	if (!$show) {
1.61      albertel  622: 	    &Apache::lonxml::get_all_text("/hintpart",$parser,$style);
1.39      albertel  623: 	}
                    624:     } elsif ($target eq 'grade') {
1.61      albertel  625: 	&Apache::lonxml::get_all_text("/hintpart",$parser,$style);
1.39      albertel  626:     } elsif ($target eq 'edit') {
                    627: 	$result.= &Apache::edit::tag_start($target,$token);
                    628: 	$result.= &Apache::edit::text_arg('On:','on',$token);
                    629: 	$result.= &Apache::edit::end_row();
                    630: 	$result.= &Apache::edit::start_spanning_row();
                    631:     } elsif ($target eq 'modified') {
                    632: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    633: 						     $safeeval,'on');
                    634: 	if ($constructtag) {
                    635: 	    $result = &Apache::edit::rebuild_tag($token);
                    636: 	}
1.20      albertel  637:     }
1.39      albertel  638:     return $result;
1.1       albertel  639: }
                    640: 
                    641: sub end_hintpart {
1.29      albertel  642:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    643:     my $result;
1.62      albertel  644:     if ($target eq 'edit') {
                    645: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
                    646:     }
1.29      albertel  647:     return $result;
                    648: }
                    649: 
                    650: sub start_optionhint {
                    651:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    652:     my $result;
1.30      albertel  653:     &Apache::response::start_hintresponse($parstack,$safeeval);
                    654:     if ($target eq 'edit') {
                    655: 	$result.=&Apache::edit::tag_start($target,$token);
                    656: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
                    657: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token,40);
                    658: 	$result.=&Apache::edit::text_arg('Concept:','concept',$token,50);
                    659:     } elsif ($target eq 'modified') {
                    660: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    661: 						     $safeeval,'name',
                    662: 						     'answer','concept');
                    663: 	if ($constructtag) {
                    664: 	    $result  = &Apache::edit::rebuild_tag($token);
                    665: 	}
                    666:     } elsif ($target eq 'meta') {
                    667: 	$result=&Apache::response::meta_package_write('numericalhint');
                    668:     }
1.29      albertel  669:     return $result;
                    670: }
                    671: 
                    672: sub end_optionhint {
                    673:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    674:     my $result;
1.30      albertel  675:     if ($target eq 'web') {
                    676: 	my ($foilmatch,$conceptmatch)=(-1,-1);
                    677: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    678: 	my $partid=$Apache::inputtags::part;
1.69      bisitz    679: 	#id submissions occurred under
1.60      albertel  680: 	my $submitid=$Apache::inputtags::response[-1];
1.30      albertel  681: 	my $part_id="$partid.$submitid";
                    682: 	my %answer;
                    683: 	my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
                    684: 	if ($answer) {
                    685: 	    eval('%answer ='.$answer);
1.62      albertel  686: 	    &Apache::lonxml::debug("answwer hash");
1.30      albertel  687: 	    &Apache::lonhomework::showhash(%answer);
                    688: 	    my $response = $Apache::lonhomework::history{
                    689: 				            "resource.$part_id.submission"};
                    690: 	    my %response=&Apache::lonnet::str2hash($response);
                    691: 	    &Apache::lonhomework::showhash(%response);
                    692: 	    foreach my $foil (keys(%answer)) {
                    693: 		$foilmatch=1;
                    694: 		if ($answer{$foil} ne $response{$foil}) {$foilmatch=0;last;}
                    695: 	    }
                    696: 	}
                    697: 	my %concept;
                    698: 	my $constr=&Apache::lonxml::get_param('concept',$parstack,$safeeval);
                    699: 	if ( $constr ) { eval('%concept ='.$constr);	}
                    700: 	my $response = $Apache::lonhomework::history{
                    701: 					"resource.$part_id.submissiongrading"};
                    702: 	my %response=&Apache::lonnet::str2hash($response);
                    703: 	foreach my $concept (keys(%concept)) {
                    704: 	    my $compare;
                    705: 	    if ($concept{$concept} eq 'correct') {$compare=1}else{$compare=0}
                    706: 	    $conceptmatch=1;
                    707: 	    if (ref($Apache::hint::option{"$part_id.concepts"})) {
                    708: 		foreach my $foil (@{ $Apache::hint::option{"$part_id.concept.$concept"} }) {
                    709: 		    &Apache::lonxml::debug("compare -$foil- -$response{$foil}-$compare-");
                    710: 		    if ( exists($response{$foil}) && 
                    711: 			 $response{$foil} ne $compare) {$conceptmatch=0;last;}
                    712: 		}
                    713: 	    } else {
                    714: 		$conceptmatch=0;
                    715: 	    }
                    716: 	    if ($conceptmatch eq '0') { last; }
                    717: 	}
                    718: 	if ( ($conceptmatch eq '-1' || $conceptmatch eq '1') &&
                    719: 	     ($foilmatch    eq '-1' || $foilmatch    eq '1') ) {
                    720: 	    push(@Apache::hint::which,$name);
                    721: 	}
1.62      albertel  722:     } elsif ($target eq 'edit') {
                    723: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
                    724:     }
1.30      albertel  725:     &Apache::response::end_hintresponse();
1.29      albertel  726:     return $result;
                    727: }
                    728: 
                    729: sub start_radiobuttonhint {
                    730:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    731:     my $result;
                    732:     &Apache::response::start_hintresponse($parstack,$safeeval);
                    733:     if ($target eq 'edit') {
                    734: 	$result.=&Apache::edit::tag_start($target,$token);
                    735: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
                    736: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token);
                    737:     } elsif ($target eq 'modified') {
                    738: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    739: 						     $safeeval,'name',
                    740: 						     'answer');
                    741: 	if ($constructtag) {
                    742: 	    $result  = &Apache::edit::rebuild_tag($token);
                    743: 	}
                    744:     } elsif ($target eq 'meta') {
                    745: 	$result=&Apache::response::meta_package_write('numericalhint');
                    746:     }
                    747:     return $result;
1.1       albertel  748: }
                    749: 
1.31      albertel  750: sub end_radiobuttonhint {
1.29      albertel  751:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    752:     my $result;
                    753:     if ($target eq 'web') {
                    754: 	my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    755: 	my @answer;
                    756: 	my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
                    757: 	eval('@answer ='.$answer);
                    758: 	my $partid=$Apache::inputtags::part;
1.69      bisitz    759: 	#id submissions occurred under
1.60      albertel  760: 	my $submitid=$Apache::inputtags::response[-1];
1.29      albertel  761: 	my $part_id="$partid.$submitid";
                    762: 	my $response = $Apache::lonhomework::history{
                    763: 			    "resource.$part_id.submission"};
                    764: 	($response)=&Apache::lonnet::str2hash($response);
1.42      albertel  765: 	&Apache::lonxml::debug("response is $response");
                    766: 	
                    767: 	if ($answer[0] eq 'foil') {
                    768: 	    shift(@answer);
                    769: 	    foreach my $answer (@answer) {
                    770: 		if ($response eq $answer) {
                    771: 		    push (@Apache::hint::which,$name);
                    772: 		    last;
                    773: 		}
                    774: 	    }
1.29      albertel  775: 	} elsif ($answer[0] eq 'concept') {
1.42      albertel  776: 	    shift(@answer);
                    777: 	    foreach my $answer (@answer) {
                    778: 		if (ref($Apache::hint::radiobutton{"$part_id.concept.".$answer})) {
                    779: 		    my @names=@{ $Apache::hint::radiobutton{"$part_id.concept.".$answer} };
                    780: 		    if (grep(/^\Q$response\E$/,@names)) {
                    781: 			push(@Apache::hint::which,$name);
                    782: 			last;
                    783: 		    }
1.29      albertel  784: 		}
                    785: 	    }
                    786: 	}
1.62      albertel  787:     } elsif ($target eq 'edit') {
                    788: 	$result.=&Apache::edit::end_row().&Apache::edit::end_table();
                    789:     }
1.29      albertel  790:     &Apache::response::end_hintresponse();
                    791:     return $result;
                    792: }
1.1       albertel  793: 1;
                    794: __END__
1.74      jms       795: 
                    796: 
                    797: =head1 NAME
                    798: 
                    799: Apache::hinttags
                    800: 
                    801: =head1 SYNOPSIS
                    802: 
                    803: This handler coordinates the delivery of hints to students working on LON-CAPA problems and assignments.
                    804: 
                    805: This is part of the LearningOnline Network with CAPA project
                    806: described at http://www.lon-capa.org.
                    807: 
                    808: =head1 SUBROUTINES
                    809: 
                    810: =over
                    811: 
                    812: =item start_hintgroup()
                    813: 
                    814: =item end_hintgroup()
                    815: 
                    816: =item start_numericalhint()
                    817: 
                    818: =item end_numericalhint()
                    819: 
                    820: =item start_formulahint()
                    821: 
                    822: =item end_formulahint()
                    823: 
                    824: =item start_mathhint()
                    825: 
                    826: =item end_mathhint()
                    827: 
                    828: =item start_customhint()
                    829: 
                    830: =item end_customhint()
                    831: 
                    832: =item start_stringhint()
                    833: 
                    834: =item end_stringhint()
                    835: 
                    836: =item start_hintpart()
                    837: 
                    838: =item end_hintpart()
                    839: 
                    840: =item start_optionhint()
                    841: 
                    842: =item end_optionhint()
                    843: 
                    844: =item start_radiobuttonhint()
                    845: 
                    846: =item end_radiobuttonhint()
                    847: 
                    848: =back
                    849: 
1.75      www       850: =cut

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