Annotation of loncom/homework/response.pm, revision 1.223

1.38      albertel    1: # The LearningOnline Network with CAPA
1.1       albertel    2: # various response type definitons response definition
1.53      albertel    3: #
1.223   ! www         4: # $Id: response.pm,v 1.222 2011/03/07 19:42:21 www Exp $
1.53      albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
1.5       www        28: 
1.208     jms        29: =pod
                     30: 
                     31: =head1 NAME
                     32: 
1.218     raeburn    33: Apache::response.pm
1.208     jms        34: 
                     35: =head1 SYNOPSIS
                     36: 
                     37: This is part of the LearningOnline Network with CAPA project
                     38: described at http://www.lon-capa.org.
                     39: 
                     40: 
                     41: =head1 NOTABLE SUBROUTINES
                     42: 
                     43: =over
                     44: 
                     45: =item 
                     46: 
                     47: =back
                     48: 
                     49: =cut
                     50: 
                     51: 
1.1       albertel   52: package Apache::response;
                     53: use strict;
1.93      albertel   54: use Apache::lonlocal;
1.120     albertel   55: use Apache::lonnet;
1.153     www        56: use Apache::lonmaxima();
1.214     www        57: use Apache::lonr();
1.1       albertel   58: 
1.57      harris41   59: BEGIN {
1.139     www        60:     &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
1.1       albertel   61: }
                     62: 
1.13      albertel   63: sub start_response {
1.73      albertel   64:     my ($parstack,$safeeval)=@_;
1.136     albertel   65:     my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.73      albertel   66:     if ($#Apache::inputtags::import > -1) {
                     67: 	&Apache::lonxml::debug("Turning :$id: into");
                     68: 	$id = join('_',@Apache::inputtags::import).'_'.$id;
                     69: 	&Apache::lonxml::debug("New  :$id:");
                     70:     }
                     71:     push (@Apache::inputtags::response,$id);
                     72:     push (@Apache::inputtags::responselist,$id);
                     73:     @Apache::inputtags::inputlist=();
1.101     albertel   74:     if ($Apache::inputtags::part eq '' && 
                     75: 	!$Apache::lonhomework::ignore_response_errors) {
1.97      albertel   76: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
1.92      albertel   77:     }
                     78:     if ($Apache::inputtags::response_with_no_part &&
                     79: 	$Apache::inputtags::part ne '0') {
1.97      albertel   80: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
1.92      albertel   81:     }
                     82:     if ($Apache::inputtags::part eq '0') {
                     83: 	$Apache::inputtags::response_with_no_part=1;
                     84:     }
1.73      albertel   85:     return $id;
1.13      albertel   86: }
                     87: 
                     88: sub end_response {
1.79      albertel   89:     #pop @Apache::inputtags::response;
1.73      albertel   90:     @Apache::inputtags::inputlist=();
                     91:     return '';
1.13      albertel   92: }
                     93: 
1.41      albertel   94: sub start_hintresponse {
1.73      albertel   95:     my ($parstack,$safeeval)=@_;
1.136     albertel   96:     my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.123     albertel   97:     push (@Apache::inputtags::hint,$id);
                     98:     push (@Apache::inputtags::hintlist,$id);
1.73      albertel   99:     push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
                    100:     return $id;
1.41      albertel  101: }
                    102: 
                    103: sub end_hintresponse {
1.123     albertel  104:     pop @Apache::inputtags::hint;
1.73      albertel  105:     if (defined($Apache::inputtags::paramstack[-1])) {
                    106: 	%Apache::inputtags::params=
                    107: 	    @{ pop(@Apache::inputtags::paramstack) };
                    108:     }
                    109:     return '';
1.41      albertel  110: }
                    111: 
1.99      albertel  112: my @randomseeds;
                    113: sub pushrandomnumber {
                    114:     my $rand_alg=&Apache::lonnet::get_rand_alg();
                    115:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    116: 	$rand_alg eq '64bit2') {
                    117: 	# do nothing
                    118:     } else {
                    119: 	my @seed=&Math::Random::random_get_seed();
1.127     albertel  120: 	push(@randomseeds,\@seed);
1.99      albertel  121:     }
1.127     albertel  122:     &Apache::response::setrandomnumber(@_);
1.99      albertel  123: }
                    124: sub poprandomnumber {
                    125:     my $rand_alg=&Apache::lonnet::get_rand_alg();
                    126:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    127: 	$rand_alg eq '64bit2') {
                    128: 	return;
                    129:     }
                    130:     my $seed=pop(@randomseeds);
                    131:     if ($seed) {
                    132: 	&Math::Random::random_set_seed(@$seed);
                    133:     } else {
                    134: 	&Apache::lonxml::error("Unable to restore random algorithm.");
                    135:     }
                    136: }
1.117     albertel  137: 
1.26      albertel  138: sub setrandomnumber {
1.221     raeburn   139:     my ($ignore_id2,$target,$rndseed) = @_;
                    140:     if (!defined($rndseed)) {
                    141:         $rndseed=&Apache::structuretags::setup_rndseed(undef,$target);
                    142:     } 
1.88      albertel  143:     if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
1.73      albertel  144:     &Apache::lonxml::debug("randseed $rndseed");
                    145:     #  $rndseed=unpack("%32i",$rndseed);
1.99      albertel  146:     my $rand_alg=&Apache::lonnet::get_rand_alg();
1.126     albertel  147:     my ($rndmod,$rndmod2);
1.119     albertel  148: 
                    149:     my ($id1,$id2,$shift_amt);
                    150:     if ($Apache::lonhomework::parsing_a_problem) {
                    151: 	$id1=$Apache::inputtags::part;
                    152: 	if (defined($Apache::inputtags::response[-1])) {
                    153: 	    $id2=$Apache::inputtags::response[-1];
                    154: 	}
                    155: 	$shift_amt=scalar(@Apache::inputtags::responselist);
                    156:     } elsif ($Apache::lonhomework::parsing_a_task) {
1.141     albertel  157: 	$id1=&Apache::bridgetask::get_dim_id();
                    158: 	if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
                    159: 	    $id2=$Apache::bridgetask::instance{$id1}[-1];
1.142     albertel  160: 	    $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
                    161: 	} else {
                    162: 	    $shift_amt=0;
1.119     albertel  163: 	}
                    164:     } 
                    165:     &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
1.99      albertel  166:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    167: 	$rand_alg eq '64bit2') {
1.119     albertel  168: 	$rndmod=(&Apache::lonnet::numval($id1) << 10);
                    169: 	if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
1.110     albertel  170:     } elsif ($rand_alg eq '64bit3') {
1.119     albertel  171: 	$rndmod=(&Apache::lonnet::numval2($id1) << 10);
                    172: 	if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
1.126     albertel  173:     } elsif ($rand_alg eq '64bit4') {
1.119     albertel  174: 	my $shift=(4*$shift_amt)%30;
                    175: 	$rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
                    176: 	if (defined($id2)) {
                    177: 	    $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
1.110     albertel  178: 	}
1.126     albertel  179:     } else {
                    180: 	($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
1.99      albertel  181:     }
1.127     albertel  182: 
1.99      albertel  183:     if ($rndseed =~/([,:])/) {
                    184: 	my $char=$1;
                    185: 	use integer;
                    186: 	my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
                    187: 	$num1+=$rndmod;
1.126     albertel  188: 	$num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
1.109     albertel  189: 	if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.99      albertel  190: 	$rndseed=$num1.$char.$num2;
                    191:     } else {
1.74      albertel  192: 	$rndseed+=$rndmod;
1.109     albertel  193: 	if($Apache::lonnet::_64bit) {
                    194: 	    use integer;
                    195: 	    $rndseed=(($rndseed<<32)>>32);
                    196: 	}
1.74      albertel  197:     }
1.111     albertel  198:     &Apache::lonxml::debug("randseed $rndmod $rndseed");
1.223   ! www       199:     $Apache::lonhomework::results{'resource.'.$id1.'.rndseed'}=$rndseed;
1.74      albertel  200:     &Apache::lonnet::setup_random_from_rndseed($rndseed);
1.73      albertel  201:     return '';
1.26      albertel  202: }
                    203: 
1.7       www       204: sub meta_parameter_write {
1.38      albertel  205:     my ($name,$type,$default,$display)=@_;
1.41      albertel  206:     my $partref=$Apache::inputtags::part;
                    207:     my $result='<parameter part="'.$Apache::inputtags::part.'"';
                    208:     if (defined($Apache::inputtags::response[-1])) {
1.73      albertel  209: 	$result.=            ' id="'.$Apache::inputtags::response[-1].'"';
                    210: 	$partref.='_'.$Apache::inputtags::response[-1];
1.41      albertel  211:     }
                    212:     $result.=            ' name="'.$name.'"'.
                    213:                          ' type="'.$type.'"'.
1.89      albertel  214: (defined($default)?' default="'.$default.'"':'').
                    215: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
1.41      albertel  216:              .'></parameter>'
                    217:              ."\n";
                    218:     return $result;
1.33      www       219: }
                    220: 
                    221: sub meta_package_write {
                    222:     my $name=shift;
1.41      albertel  223:     my $result = '<parameter part="'.$Apache::inputtags::part.'"';
                    224:     if(defined($Apache::inputtags::response[-1])) {
1.73      albertel  225: 	$result.= ' id="'.$Apache::inputtags::response[-1].'"';
1.41      albertel  226:     }
                    227:     $result.=' package="'.$name.'"></parameter>'."\n";
                    228:     return $result;
1.7       www       229: }
                    230: 
                    231: sub meta_stores_write {
1.10      www       232:     my ($name,$type,$display)=@_;
1.41      albertel  233:     my $partref=$Apache::inputtags::part;
                    234:     my $result = '<stores part="'.$Apache::inputtags::part.'"';
                    235:     if (defined($Apache::inputtags::response[-1])) {
1.73      albertel  236: 	$result.=           ' id="'.$Apache::inputtags::response[-1].'"';
                    237: 	$partref.='_'.$Apache::inputtags::response[-1];
1.41      albertel  238:     }	
                    239:     $result.=          ' name="'.$name.'"'.
                    240:                        ' type="'.$type.'"'.
                    241: 	            ' display="'.$display.' [Part: '.$partref.']"'.
                    242: 		      "></stores>\n";
1.7       www       243: }
                    244: 
1.207     jms       245: =pod
                    246: 
1.210     raeburn   247: =item mandatory_part_meta()
1.207     jms       248: 
                    249: Autogenerate metadata for mandatory
1.210     raeburn   250: input (from RAT or lonparmset) and
1.207     jms       251: output (to lonspreadsheet)
                    252: of each part
                    253: 
                    254: Note: responseid-specific data 'submission' and 'awarddetail'
                    255: not available to spreadsheet -> skip here
                    256: 
                    257: =cut
                    258: 
1.210     raeburn   259: 
                    260: sub mandatory_part_meta {
                    261:     return &meta_package_write('part').
                    262:            &meta_stores_write('solved','string','Problem Status').
                    263:            &meta_stores_write('tries','int_zeropos','Number of Attempts').
                    264:            &meta_stores_write('awarded','float','Partial Credit Factor');
1.86      albertel  265: }
                    266: 
                    267: sub meta_part_order {
                    268:     if (@Apache::inputtags::partlist) {
                    269: 	my @parts=@Apache::inputtags::partlist;
                    270: 	shift(@parts);
1.100     albertel  271: 	return '<partorder>'.join(',',@parts).'</partorder>'."\n";
1.86      albertel  272:     } else {
1.100     albertel  273: 	return '<partorder>0</partorder>'."\n";
                    274:     }
                    275: }
                    276: 
                    277: sub meta_response_order {
                    278:     if (@Apache::inputtags::responselist) {
                    279: 	return '<responseorder>'.join(',',@Apache::inputtags::responselist).
                    280: 	    '</responseorder>'."\n";
1.86      albertel  281:     }
1.14      albertel  282: }
                    283: 
1.15      albertel  284: sub check_for_previous {
1.219     raeburn   285:     my ($curresponse,$partid,$id,$last,$type) = @_;
1.73      albertel  286:     my %previous;
                    287:     $previous{'used'} = 0;
1.221     raeburn   288:     my $questiontype = $Apache::lonhomework::type;
                    289:     my $curr_rndseed = $env{'form.'.$partid.'.rndseed'};
1.73      albertel  290:     foreach my $key (sort(keys(%Apache::lonhomework::history))) {
1.212     raeburn   291: 	if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
1.160     albertel  292: 	    if ( $last && $key =~ /^(\d+):/ ) {
                    293: 		next if ($1 >= $last);
                    294: 	    }
1.73      albertel  295: 	    &Apache::lonxml::debug("Trying $key");
                    296: 	    my $pastresponse=$Apache::lonhomework::history{$key};
                    297: 	    if ($pastresponse eq $curresponse) {
                    298: 		my $history;
                    299: 		if ( $key =~ /^(\d+):/ ) {
1.221     raeburn   300:                     $history=$1;
                    301:                     next if ((($questiontype eq 'randomizetry') ||
                    302:                              ($Apache::lonhomework::history{"$history:resource.$partid.type"} eq 'randomizetry')) &&
                    303:                              ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
1.73      albertel  304: 		    $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
                    305: 		    $previous{'last'}='0';
                    306: 		    push(@{ $previous{'version'} },$history);
                    307: 		} else {
1.221     raeburn   308:                     next if ((($questiontype eq 'randomizetry') ||
                    309:                              ($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry')) &&
                    310:                              ($curr_rndseed ne $Apache::lonhomework::history{"resource.$partid.rndseed"}));
1.73      albertel  311: 		    $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
                    312: 		    $previous{'last'}='1';
                    313: 		}
1.221     raeburn   314:                 $previous{'used'} = 1;
1.73      albertel  315: 		if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN';	}
1.209     www       316:                 if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
1.73      albertel  317: 		&Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
1.219     raeburn   318:             } elsif ($type eq 'ci') {
                    319:                 if (lc($pastresponse) eq lc($curresponse)) {
                    320:                     if ($key =~ /^(\d+):/) {
1.221     raeburn   321:                         my $history = $1;
                    322:                         next if (($questiontype eq 'randomizetry') &&
                    323:                              ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
                    324:                         push (@{$previous{'versionci'}},$history);
1.219     raeburn   325:                         $previous{'awardci'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
                    326:                         $previous{'usedci'} = 1;
                    327:                     }
                    328:                 }
                    329:             }
1.32      albertel  330: 	}
1.73      albertel  331:     }
                    332:     &Apache::lonhomework::showhash(%previous);
                    333:     return %previous;
1.54      albertel  334: }
                    335: 
                    336: sub handle_previous {
1.73      albertel  337:     my ($previous,$ad)=@_;
                    338:     if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
                    339: 	if ($$previous{'last'}) {
                    340: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
1.107     albertel  341: 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
1.217     raeburn   342: 	} elsif (($Apache::lonhomework::type ne 'survey') &&
                    343:                  ($Apache::lonhomework::type ne 'surveycred') &&
                    344:                  ($Apache::lonhomework::type ne 'anonsurvey') &&
1.221     raeburn   345:                  ($Apache::lonhomework::type ne 'anonsurveycred')) {
1.73      albertel  346: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
1.107     albertel  347: 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
1.73      albertel  348: 	}
1.54      albertel  349:     }
1.44      albertel  350: }
                    351: 
1.45      albertel  352: sub view_or_modify {
1.149     albertel  353:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.73      albertel  354:     my $myself=0;
1.120     albertel  355:     if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
1.73      albertel  356: 	$myself=1;
                    357:     }
                    358:     my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
                    359:     my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
                    360:     if ($mgr) { return "M"; }
                    361:     if ($vgr) { return "V"; }
                    362:     if ($myself) { return "V"; }
                    363:     return '';
1.45      albertel  364: }
                    365: 
1.44      albertel  366: sub start_dataresponse {
1.73      albertel  367:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    368:     my $id = &Apache::response::start_response($parstack,$safeeval);
                    369:     my $result;
                    370:     if ($target eq 'web') {
                    371: 	$result = $token->[2]->{'display'}.':';
                    372:     } elsif ($target eq 'meta') {
                    373: 	$result = &Apache::response::meta_stores_write($token->[2]->{'name'},
                    374: 						       $token->[2]->{'type'},
                    375: 						       $token->[2]->{'display'});
                    376: 	$result .= &Apache::response::meta_package_write('dataresponse');
                    377:     }
                    378:     return $result;
1.44      albertel  379: }
                    380: 
                    381: sub end_dataresponse {
1.73      albertel  382:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    383:     my $result;
                    384:     if ( $target eq 'web' ) {
                    385:     } elsif ($target eq 'grade' ) {
1.120     albertel  386: 	if ( defined $env{'form.submitted'}) {
1.149     albertel  387: 	    my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
1.73      albertel  388: 	    my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
                    389: 	    if ($allowed) {
1.94      albertel  390: 		&Apache::response::setup_params('dataresponse',$safeeval);
1.73      albertel  391: 		my $partid = $Apache::inputtags::part;
                    392: 		my $id = $Apache::inputtags::response['-1'];
1.120     albertel  393: 		my $response = $env{'form.HWVAL_'.$id};
1.73      albertel  394: 		my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    395: 		if ( $response =~ /[^\s]/) {
                    396: 		    $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
                    397: 		    $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
                    398: 		    $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
                    399: 		}
                    400: 	    } else {
                    401: 		$result='Not Permitted to change values.'
                    402: 	    }
1.45      albertel  403: 	}
1.73      albertel  404:     }
                    405:     &Apache::response::end_response;
                    406:     return $result;
1.3       albertel  407: }
                    408: 
1.129     albertel  409: sub start_customresponse {
1.128     albertel  410:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    411:     my $id = &Apache::response::start_response($parstack,$safeeval);
1.129     albertel  412:     push(@Apache::lonxml::namespace,'customresponse');
1.128     albertel  413:     my $result;
1.157     www       414:     @Apache::response::custom_answer=();
                    415:     @Apache::response::custom_answer_type=();
1.128     albertel  416:     &Apache::lonxml::register('Apache::response',('answer'));
                    417:     if ($target eq 'web') {
                    418:   	if (  &Apache::response::show_answer() ) {
                    419: 	    my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    420: 						   $safeeval);
1.152     albertel  421: 	    $Apache::inputtags::answertxt{$id}=[$answer];
1.128     albertel  422: 	}
                    423:     } elsif ($target eq 'edit') {
                    424: 	$result.=&Apache::edit::tag_start($target,$token);
                    425: 	$result.=&Apache::edit::text_arg('String to display for answer:',
1.220     www       426: 					 'answerdisplay',$token,'50');
1.128     albertel  427: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    428:     } elsif ($target eq 'modified') {
                    429: 	my $constructtag;
                    430: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
                    431: 						  $safeeval,'answerdisplay');
                    432: 	if ($constructtag) {
                    433: 	    $result = &Apache::edit::rebuild_tag($token);
                    434: 	}
                    435:     } elsif ($target eq 'answer' || $target eq 'grade') {
                    436: 	&Apache::response::reset_params();
                    437:     } elsif ($target eq 'meta') {
1.129     albertel  438: 	$result .= &Apache::response::meta_package_write('customresponse');
1.128     albertel  439:     }
                    440:     return $result;
                    441: }
                    442: 
1.129     albertel  443: sub end_customresponse {
1.128     albertel  444:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    445:     my $result;
                    446:     my $part=$Apache::inputtags::part;
                    447:     my $id=$Apache::inputtags::response[-1];
                    448:     if ( $target eq 'grade' && &Apache::response::submitted() ) {
                    449: 	my $response = &Apache::response::getresponse();
1.146     albertel  450: 	if ($Apache::lonhomework::type eq 'exam' ||
                    451: 	    &Apache::response::submitted('scantron')) {
                    452: 	    &Apache::response::scored_response($part,$id);
                    453: 	} elsif ( $response =~ /[^\s]/ && 
1.158     www       454: 		  $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
1.128     albertel  455: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    456: 		&Apache::lonxml::default_homework_load($safeeval);
                    457: 	    }
                    458: 	    my %previous = &Apache::response::check_for_previous($response,
                    459: 								 $part,$id);
                    460: 	    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    461: 		$response;
                    462: 	    my $error;
1.129     albertel  463: 	    ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
1.128     albertel  464: 		$response;
                    465: 	    
1.216     www       466: 	    my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
1.128     albertel  467: 	    if (!&Apache::inputtags::valid_award($award)) {
                    468: 		$error = $award;
                    469: 		$award = 'ERROR';
                    470: 	    }
                    471: 	    &Apache::response::handle_previous(\%previous,$award);
                    472: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                    473: 		$award;
1.216     www       474:             if ($award eq 'ASSIGNED_SCORE') {
                    475:                 $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
                    476:             }
1.128     albertel  477: 	    if ($error) {
                    478: 		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
                    479: 		    $error;
                    480: 	    }
                    481: 	}
1.146     albertel  482:     } elsif ( $target eq 'answer') {
                    483: 	$result  = &Apache::response::answer_header('customresponse');
                    484: 	my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    485: 						$safeeval);
                    486: 	if ($env{'form.answer_output_mode'} ne 'tex') {
                    487: 	    $answer = '<b>'.$answer.'</b>';
                    488: 	}
                    489: 	$result .= &Apache::response::answer_part('customresponse',$answer);
                    490: 	$result .= &Apache::response::answer_footer('customresponse');
                    491:     }
1.163     albertel  492:     if ($target eq 'web') {
                    493: 	&setup_prior_tries_hash(\&format_prior_response_math);
                    494:     }
1.146     albertel  495:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || 
                    496: 	$target eq 'tex' || $target eq 'analyze') {
1.179     foxr      497: 	&Apache::lonxml::increment_counter(&Apache::response::repetition(),
1.180     foxr      498: 					   "$part.$id");
1.179     foxr      499: 	if ($target eq 'analyze') {
1.187     raeburn   500:             $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
1.179     foxr      501: 	    &Apache::lonhomework::set_bubble_lines();
                    502: 	}
1.128     albertel  503:     }
                    504:     pop(@Apache::lonxml::namespace);
1.157     www       505:     pop(@Apache::response::custom_answer);
                    506:     pop(@Apache::response::custom_answer_type);
1.128     albertel  507:     &Apache::lonxml::deregister('Apache::response',('answer'));
                    508:     &Apache::response::end_response();
                    509:     return $result;
                    510: }
                    511: 
1.163     albertel  512: sub format_prior_response_custom {
                    513:     my ($mode,$answer) =@_;
                    514:     return '<span class="LC_prior_custom">'.
                    515: 	    &HTML::Entities::encode($answer,'"<>&').'</span>';
                    516: }
1.140     www       517: 
1.139     www       518: sub start_mathresponse {
1.140     www       519:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    520:     my $id = &Apache::response::start_response($parstack,$safeeval);
                    521:     push(@Apache::lonxml::namespace,'mathresponse');
1.139     www       522:     my $result;
1.157     www       523:     @Apache::response::custom_answer=();
                    524:     @Apache::response::custom_answer_type=();
1.140     www       525:     &Apache::lonxml::register('Apache::response',('answer'));
                    526:     if ($target eq 'web') {
                    527:   	if (  &Apache::response::show_answer() ) {
                    528: 	    my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    529: 						   $safeeval);
1.152     albertel  530: 	    $Apache::inputtags::answertxt{$id}=[$answer];
1.140     www       531: 	}
1.191     www       532: 
1.140     www       533:     } elsif ($target eq 'edit') {
                    534: 	$result.=&Apache::edit::tag_start($target,$token);
                    535: 	$result.=&Apache::edit::text_arg('String to display for answer:',
1.220     www       536: 					 'answerdisplay',$token,'50');
1.150     www       537: 	$result.=&Apache::edit::select_arg('Algebra System:',
                    538: 					   'cas',
1.214     www       539: 					   ['maxima','R'],
1.150     www       540: 					   $token);
                    541: 	$result.=&Apache::edit::text_arg('Argument Array:',
1.193     www       542: 					 'args',$token).
                    543:                  &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
1.192     www       544:         $result.=&Apache::edit::text_arg('Libraries:',
1.193     www       545:                                          'libraries',$token).
                    546:                  &Apache::loncommon::help_open_topic('Maxima_Libraries');
1.140     www       547: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    548:     } elsif ($target eq 'modified') {
                    549: 	my $constructtag;
                    550: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
1.192     www       551: 						  $safeeval,'answerdisplay','cas','args','libraries');
1.140     www       552: 	if ($constructtag) {
                    553: 	    $result = &Apache::edit::rebuild_tag($token);
                    554: 	}
                    555:     } elsif ($target eq 'answer' || $target eq 'grade') {
                    556: 	&Apache::response::reset_params();
                    557:     } elsif ($target eq 'meta') {
                    558: 	$result .= &Apache::response::meta_package_write('mathresponse');
1.139     www       559:     }
                    560:     return $result;
                    561: }
                    562: 
1.191     www       563: sub edit_mathresponse_button {
                    564:     my ($id,$field)=@_;
                    565:     my $button=&mt('Edit Answer');
1.201     riegler   566: #    my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
1.197     riegler   567:     my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
1.191     www       568:     return(<<ENDFORMULABUTTON);
1.213     bisitz    569: <script type="text/javascript" language="JavaScript">
1.191     www       570: function edit_${id}_${field} (textarea) {
                    571:     thenumber = textarea;
                    572:     thedata = document.forms['lonhomework'].elements[textarea].value;
                    573:     newwin = window.open("/adm/dragmath/applet/MaximaPopup.html","","width=565,height=400,resizable");
                    574: }
                    575: </script>
1.215     bisitz    576: <a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
1.191     www       577: ENDFORMULABUTTON
                    578: }
                    579: 
1.139     www       580: sub end_mathresponse {
1.140     www       581:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    582:     my $result;
                    583:     my $part=$Apache::inputtags::part;
                    584:     my $id=$Apache::inputtags::response[-1];
                    585:     if ( $target eq 'grade' && &Apache::response::submitted() ) {
                    586: 	my $response = &Apache::response::getresponse();
1.150     www       587: 	if ( $response =~ /[^\s]/ ) {
1.140     www       588: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    589: 		&Apache::lonxml::default_homework_load($safeeval);
                    590: 	    }
                    591: 	    my %previous = &Apache::response::check_for_previous($response,
                    592: 								 $part,$id);
                    593: 	    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    594: 		$response;
                    595: 	    my $error;
1.155     www       596: 	    my $award;
                    597: 	    my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
                    598:             if ($cas eq 'maxima') {
                    599:                 my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
1.192     www       600:                 $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
                    601:                                                       &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
1.155     www       602:             }
1.214     www       603:             if ($cas eq 'R') {
                    604:                 my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
                    605:                 $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
                    606:                                             &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
                    607:             }
                    608: 
1.140     www       609: 	    if (!&Apache::inputtags::valid_award($award)) {
1.151     albertel  610: 		$error = $award;
                    611: 		$award = 'ERROR';
1.140     www       612: 	    }
                    613: 	    &Apache::response::handle_previous(\%previous,$award);
                    614: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                    615: 		$award;
                    616: 	    if ($error) {
                    617: 		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
                    618: 		    $error;
                    619: 	    }
                    620: 	}
                    621:     }
1.163     albertel  622:     if ($target eq 'web') {
                    623: 	&setup_prior_tries_hash(\&format_prior_response_math);
1.203     riegler   624:         my $partid = $Apache::inputtags::part;
                    625:         my $id = $Apache::inputtags::response[-1];
                    626:         if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
1.205     raeburn   627:            && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
1.202     riegler   628:             $result.=&edit_mathresponse_button($id,"HWVAL_$id");
                    629:         }
1.163     albertel  630:     }
                    631: 
1.140     www       632:     pop(@Apache::lonxml::namespace);
1.157     www       633:     pop(@Apache::response::custom_answer);
                    634:     pop(@Apache::response::custom_answer_type);
1.140     www       635:     &Apache::lonxml::deregister('Apache::response',('answer'));
                    636:     &Apache::response::end_response();
                    637:     return $result;
1.139     www       638: }
                    639: 
1.163     albertel  640: sub format_prior_response_math {
                    641:     my ($mode,$answer) =@_;
                    642:     return '<span class="LC_prior_math">'.
                    643: 	    &HTML::Entities::encode($answer,'"<>&').'</span>';
                    644: }
                    645: 
1.156     www       646: sub implicit_multiplication {
                    647:     my ($expression)=@_;
                    648: # Escape scientific notation, so 3e8 does not become 3*e*8
                    649: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
                    650:     $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
                    651: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
                    652:     $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
                    653: # Fill in multiplication signs
                    654: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
1.176     albertel  655:     $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
1.156     www       656: # )( -> )*(; ) ( -> )*(
                    657:     $expression=~s/\)\s*\(/\)\*\(/gs;
                    658: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
                    659:     $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
                    660: # a ( -> a*(
1.174     riegler   661:     $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
1.156     www       662: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
1.174     riegler   663:     $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
1.156     www       664: # 3&8 -> 3e8; 3&-4 -> 3e-4
                    665:     $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
                    666:     return $expression;
                    667: }
1.140     www       668: 
1.128     albertel  669: sub start_answer {
                    670:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    671:     my $result;
1.157     www       672:     push(@Apache::response::custom_answer,
                    673: 	&Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
                    674:     push(@Apache::response::custom_answer_type,
                    675: 	lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
                    676:     $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
1.128     albertel  677:     if ($target eq "edit" ) {
                    678: 	$result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
                    679: 	$result.=&Apache::edit::editfield($token->[1],
1.158     www       680: 					  $Apache::response::custom_answer[-1],
1.128     albertel  681: 					  '',80,4);
                    682:     } elsif ( $target eq "modified" ) {
                    683: 	$result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
                    684:     }
                    685:     return $result;
                    686: }
                    687: 
                    688: sub end_answer {
                    689:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    690:     if ($target eq 'edit' ) {
                    691: 	return &Apache::edit::end_table();
                    692:     }
                    693: }
                    694: 
1.83      albertel  695: sub decide_package {
                    696:     my ($tagstack)=@_;
                    697:     my $package;
                    698:     if ($$tagstack[-1] eq 'parameter') {
                    699: 	$package='part';
                    700:     } else {
                    701: 	my $i=-1;
                    702: 	while (defined($$tagstack[$i])) {
                    703: 	    if ($$tagstack[$i] =~ /(response|hint)$/) {
                    704: 		$package=$$tagstack[$i];
                    705: 		last;
                    706: 	    }
                    707: 	    $i--;
                    708: 	}
                    709:     }
                    710:     return $package;
                    711: }
                    712: 
1.3       albertel  713: sub start_responseparam {
1.73      albertel  714:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    715:     my $result='';
                    716:     if ($target eq 'meta') {
                    717: 	$result = &meta_parameter_write($token->[2]->{'name'},
                    718: 					$token->[2]->{'type'},
                    719: 					$token->[2]->{'default'},
                    720: 					$token->[2]->{'description'});
                    721:     } elsif ($target eq 'edit') {
                    722: 	$result.=&Apache::edit::tag_start($target,$token);
1.83      albertel  723: 	my $optionlist;
                    724: 	my $package=&decide_package($tagstack);
                    725: 	foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
                    726: 	    if ($key =~ /^\Q$package\E&(.*)&display$/) {
                    727: 		$optionlist.='<option value="'.$1.'">'.
                    728: 		    $Apache::lonnet::packagetab{$key}.'</option>';
                    729: 	    }
                    730: 	}
                    731: 	if (defined($optionlist)) {
1.206     bisitz    732: 	    $result.=&mt('Use template:').' <select name="'.
1.83      albertel  733: 		&Apache::edit::html_element_name('parameter_package').'">'.
                    734: 		    '<option value=""></option>'.$optionlist.'</select><br />';
                    735: 	}
1.73      albertel  736: 	$result.=&Apache::edit::text_arg('Name:','name',$token).
                    737: 	    &Apache::edit::text_arg('Type:','type',$token).
                    738: 		&Apache::edit::text_arg('Description:','description',$token).
                    739: 		    &Apache::edit::text_arg('Default:','default',$token).
                    740: 			"</td></tr>";
                    741: 	$result.=&Apache::edit::end_table;
                    742:     } elsif ($target eq 'modified') {
1.83      albertel  743: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    744: 						     $safeeval,'name','type',
                    745: 						     'description','default');
                    746: 	my $element=&Apache::edit::html_element_name('parameter_package');
1.120     albertel  747: 	if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
                    748: 	    my $name=$env{"form.$element"};
1.83      albertel  749: 	    my $tag=&decide_package($tagstack);
                    750: 	    $token->[2]->{'name'}=$name;
                    751: 	    $token->[2]->{'type'}=
                    752: 		$Apache::lonnet::packagetab{"$tag&$name&type"};
                    753: 	    $token->[2]->{'description'}=
                    754: 		$Apache::lonnet::packagetab{"$tag&$name&display"};
                    755: 	    $token->[2]->{'default'}=
                    756: 		$Apache::lonnet::packagetab{"$tag&$name&default"};
1.186     raeburn   757:             $token->[3] = ['name','type','description','default'];
1.83      albertel  758: 	    $constructtag=1;
                    759: 	}
1.73      albertel  760: 	if ($constructtag) {
                    761: 	    $result = &Apache::edit::rebuild_tag($token);
                    762: 	}
                    763:     } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
                    764: 	     $target eq 'tex' || $target eq 'analyze' ) {
1.120     albertel  765: 	if ($env{'request.state'} eq 'construct') {
1.73      albertel  766: 	    my $name   =&Apache::lonxml::get_param('name',$parstack,$safeeval);
                    767: 	    my $default=&Apache::lonxml::get_param('default',$parstack,
                    768: 						     $safeeval);
                    769: 	    if ($name) {$Apache::inputtags::params{$name}=$default;}
                    770: 	}
1.52      albertel  771:     }
1.73      albertel  772:     return $result;
1.3       albertel  773: }
                    774: 
                    775: sub end_responseparam {
1.73      albertel  776:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    777:     if ($target eq 'edit') { return ('','no'); }
                    778:     return '';
1.55      albertel  779: }
                    780: 
                    781: sub start_parameter {
1.114     albertel  782:     return &start_responseparam(@_);
1.55      albertel  783: }
                    784: 
                    785: sub end_parameter {
1.114     albertel  786:     return &end_responseparam(@_);
1.42      albertel  787: }
                    788: 
1.67      albertel  789: sub reset_params {
                    790:     %Apache::inputtags::params=();
                    791: }
                    792: 
1.42      albertel  793: sub setup_params {
1.94      albertel  794:     my ($tag,$safeeval) = @_;
1.42      albertel  795: 
1.120     albertel  796:     if ($env{'request.state'} eq 'construct') { return; }
1.73      albertel  797:     my %paramlist=();
                    798:     foreach my $key (keys(%Apache::lonnet::packagetab)) {
1.161     albertel  799: 	if ($key =~ /^\Q$tag\E/) {
1.73      albertel  800: 	    my ($package,$name) = split(/&/,$key);
                    801: 	    $paramlist{$name}=1;
                    802: 	}
1.42      albertel  803:     }
1.73      albertel  804:     foreach my $key (keys(%paramlist)) {
                    805: 	my $entry= 'resource.'.$Apache::inputtags::part;
                    806: 	if (defined($Apache::inputtags::response[-1])) {
                    807: 	    $entry.='_'.$Apache::inputtags::response[-1];
                    808: 	}
                    809: 	$entry.='.'.$key;
                    810: 	&Apache::lonxml::debug("looking for $entry");
                    811: 	my $value = &Apache::lonnet::EXT("$entry");
                    812: 	&Apache::lonxml::debug("$key has value :$value:");
                    813: 	if ($value eq 'con_lost' || $value =~ /^error:/) {
                    814: 	    &Apache::lonxml::debug("using nothing");
                    815: 	    $Apache::inputtags::params{$key}='';
                    816: 	} else {
1.94      albertel  817: 	    my $string="{return qq\0".$value."\0}";
                    818: 	    my $newvalue=&Apache::run::run($string,$safeeval,1);
                    819: 	    if (defined($newvalue)) { $value=$newvalue; }
1.73      albertel  820: 	    $Apache::inputtags::params{$key}=$value;
                    821: 	}
1.42      albertel  822:     }
1.48      albertel  823: }
                    824: 
1.132     albertel  825: {
                    826:     my @answer_bits;
1.147     albertel  827:     my $need_row_start;
1.132     albertel  828: 
1.48      albertel  829: sub answer_header {
1.147     albertel  830:     my ($type,$increment,$rows) = @_;
1.73      albertel  831:     my $result;
1.120     albertel  832:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.132     albertel  833: 	undef(@answer_bits);
1.133     albertel  834: 	my $bit;
                    835: 	if ($Apache::lonhomework::type eq 'exam') {
                    836: 	    $bit = ($Apache::lonxml::counter+$increment).') ';
                    837: 	} else {
                    838: 	    $bit .= ' Answer for Part: \verb|'.
                    839: 		$Apache::inputtags::part.'| ';
                    840: 	}
                    841: 	push(@answer_bits,$bit);
1.73      albertel  842:     } else {
1.147     albertel  843: 	my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
1.132     albertel  844: 	$result  = '<table border="1"><tr>';
                    845: 	if ($Apache::lonhomework::type eq 'exam') {
1.147     albertel  846: 	    $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
1.132     albertel  847: 	} else {
1.147     albertel  848: 	    $result .= $td.&mt('Answer for Part: [_1]',
                    849: 			       $Apache::inputtags::part).'</td>';
1.132     albertel  850: 	}
                    851: 	$result .= "\n";
1.147     albertel  852: 	$need_row_start = 0;
                    853:     }
                    854:     return $result;
                    855: }
                    856: 
                    857: sub next_answer {
                    858:     my ($type) = @_;
                    859:     my $result;
                    860:     if ($env{'form.answer_output_mode'} eq 'tex') {
                    861: 	# FIXME ... need to do something with tex mode
                    862:     } else {
                    863: 	$result .= "</tr>";
                    864: 	$need_row_start = 1;
1.73      albertel  865:     }
                    866:     return $result;
1.48      albertel  867: }
                    868: 
                    869: sub answer_part {
1.148     albertel  870:     my ($type,$answer,$args) = @_;
1.73      albertel  871:     my $result;
1.120     albertel  872:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.148     albertel  873: 	if (!$args->{'no_verbatim'}) {
                    874: 	    my $to_use='|';
                    875: 	    foreach my $value (32..126) {
                    876: 		my $char=pack('c',$value);
                    877: 		if ($answer !~ /\Q$char\E/) {
                    878: 		    $to_use=$char;
                    879: 		    last;
                    880: 		}
                    881: 	    }
1.189     www       882:             my $fullanswer=$answer;
1.188     www       883:             $answer='';
1.189     www       884:             foreach my $element (split(/[\;]/,$fullanswer)) {
                    885: 	       if ($element ne '') {
                    886: 	 	  $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
                    887: 	       }
1.188     www       888:             }
1.124     albertel  889: 	}
1.132     albertel  890: 	if ($answer ne '') {
1.148     albertel  891: 	    push(@answer_bits,$answer);
1.132     albertel  892: 	}
1.73      albertel  893:     } else {
1.147     albertel  894: 	if ($need_row_start) {
                    895: 	    $result .= '<tr>';
                    896: 	    $need_row_start = 0;
                    897: 	}
1.189     www       898: 	$result .= '<td>'.$answer.'</td>';
1.73      albertel  899:     }
                    900:     return $result;
1.48      albertel  901: }
                    902: 
                    903: sub answer_footer {
1.73      albertel  904:     my ($type) = @_;
                    905:     my $result;
1.120     albertel  906:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.189     www       907: 	$result  = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
                    908: 	$result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
                    909:         for (my $i=1;$i<=$#answer_bits;$i++) {
                    910:             $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
                    911:         }
                    912: 	$result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
1.73      albertel  913:     } else {
1.185     albertel  914: 	if (!$need_row_start) {
                    915: 	    $result .= '</tr>';
                    916: 	}
                    917: 	$result .= '</table>';
1.73      albertel  918:     }
                    919:     return $result;
1.1       albertel  920: }
1.2       albertel  921: 
1.132     albertel  922: }
                    923: 
1.62      albertel  924: sub showallfoils {
1.120     albertel  925:     if (defined($env{'form.showallfoils'})) {
1.149     albertel  926: 	my ($symb)=&Apache::lonnet::whichuser();
1.120     albertel  927: 	if (($env{'request.state'} eq 'construct') || 
                    928: 	    ($env{'user.adv'} && $symb eq '')      ||
1.118     foxr      929:             ($Apache::lonhomework::viewgrades) ) {
1.102     albertel  930: 	    return 1;
                    931: 	}
1.73      albertel  932:     }
1.108     albertel  933:     if ($Apache::lonhomework::type eq 'survey') { return 1; }
1.217     raeburn   934:     if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
                    935:     if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
                    936:     if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
                    937: 
1.102     albertel  938:     return 0;
1.70      albertel  939: }
                    940: 
1.168     albertel  941: =pod
                    942: 
1.210     raeburn   943: =item &getresponse();
1.168     albertel  944: 
                    945: Retreives the current submitted response, helps out in the case of
                    946: scantron mode.
                    947: 
                    948: Returns either the exact text of the submission, or a bubbled response
                    949: converted to something usable.
                    950: 
                    951: Optional Arguments:
1.171     albertel  952:   $offset - (defaults to 1) if a problem has more than one bubble
                    953:             response, pass in the number of the bubble wanted, (the
                    954:             first bubble associated with a problem has an offset of 1,
                    955:             the second bubble is 2
                    956: 
1.168     albertel  957:   $resulttype - undef    -> a number between 0 and 25
                    958:                 'A is 1' -> a number between 1 and 26
                    959:                 'letter' -> a letter between 'A' and 'Z'
1.172     foxr      960:   $lines  - undef problem only needs a single line of bubbles.
                    961:             nonzero  Problem wants the first nonempty response in 
                    962:                       $lines lines of bubbles.
                    963:   $bubbles_per_line - Must be provided if lines is defined.. number of
                    964:                       bubbles on a line.
1.173     albertel  965: 
1.168     albertel  966: =cut
                    967: 
1.70      albertel  968: sub getresponse {
1.172     foxr      969:     my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
1.70      albertel  970:     my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
                    971:     my $response;
1.168     albertel  972:     if (!defined($offset)) {
1.170     albertel  973: 	$offset=1;
1.70      albertel  974:     } else {
1.168     albertel  975: 	$formparm.=":$offset";
1.70      albertel  976:     }
1.172     foxr      977:     if (!defined($lines)) {
                    978: 	$lines = 1;
                    979:     }
1.70      albertel  980:     my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
                    981: 		    'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
                    982: 		    'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
                    983: 		    'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
1.120     albertel  984:     if ($env{'form.submitted'} eq 'scantron') {
1.71      albertel  985: 	my $part  = $Apache::inputtags::part;
                    986: 	my $id    = $Apache::inputtags::response[-1];
1.172     foxr      987: 	
                    988: 	my $line;
1.211     raeburn   989: 	my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
                    990:         if (!$startline) {
                    991:             $startline = $Apache::lonxml::counter;
                    992:         }
1.172     foxr      993: 	for ($line = 0; $line < $lines; $line++) {
1.211     raeburn   994:             my $theline = $startline+$offset-1+$line;
1.184     foxr      995: 	    $response = $env{"scantron.$theline.answer"};
                    996: 	    if ((defined($response)) && ($response ne "") && ($response ne " ")) {
1.172     foxr      997: 		last;
                    998: 	    }
1.211     raeburn   999:  
1.172     foxr     1000: 	}
1.178     albertel 1001: 
                   1002: 	# save bubbled letter for later
                   1003: 	$Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
                   1004: 	    $response;
1.90      albertel 1005: 	if ($resulttype ne 'letter') {
1.104     albertel 1006: 	    if ($resulttype eq 'A is 1') {
1.105     albertel 1007: 		$response = $let_to_num{$response}+1;
                   1008: 	    } else {
1.104     albertel 1009: 		$response = $let_to_num{$response};
                   1010: 	    }
1.172     foxr     1011: 	    if ($response ne "") {
                   1012: 		$response += $line * $bubbles_per_line;
                   1013: 	    }
                   1014: 	} else {
                   1015: 	    if ($response ne "") {
                   1016: 		$response = chr(ord($response) + $line * $bubbles_per_line);
                   1017: 	    }
1.90      albertel 1018: 	}
1.172     foxr     1019: 
1.70      albertel 1020:     } else {
1.120     albertel 1021: 	$response = $env{$formparm};
1.70      albertel 1022:     }
1.172     foxr     1023:     # 
                   1024:     #  If we have a nonempty answer, correct the numeric value
                   1025:     #  of the answer for the line on which it was found.
                   1026:     #
                   1027: 
1.70      albertel 1028:     return $response;
1.62      albertel 1029: }
1.71      albertel 1030: 
1.168     albertel 1031: =pod
                   1032: 
                   1033: =item &repetition();
                   1034: 
                   1035: Returns the number of lines that are required to encode the weight.
                   1036: (Currently expects that there are 10 bubbles per line)
                   1037: 
                   1038: =cut
                   1039: 
1.71      albertel 1040: sub repetition {
                   1041:     my $id = $Apache::inputtags::part;
                   1042:     my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.121     albertel 1043:     if (!defined($weight) || ($weight eq '')) { $weight=1; }
1.125     albertel 1044:     my $repetition = int($weight/10);
                   1045:     if ($weight % 10 != 0) { $repetition++; } 
1.72      albertel 1046:     return $repetition;
                   1047: }
                   1048: 
1.168     albertel 1049: =pod
                   1050: 
1.210     raeburn  1051: =item &scored_response();
1.168     albertel 1052: 
                   1053: Sets the results hash elements
                   1054: 
                   1055:    resource.$part_id.$response_id.awarded - to the floating point
                   1056:      number between 0 and 1 that was awarded on the bubbled input
                   1057: 
                   1058:    resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
                   1059: 
                   1060: Returns
                   1061: 
                   1062:    the number of bubble sheet lines that were used (and likely need to
                   1063:      be passed to &Apache::lonxml::increment_counter()
                   1064: 
                   1065: Arguments
                   1066: 
                   1067:    $part_id - id of the part to grade
                   1068:    $response_id - id of the response to grade
                   1069:   
                   1070: 
                   1071: =cut
                   1072: 
1.72      albertel 1073: sub scored_response {
                   1074:     my ($part,$id)=@_;
                   1075:     my $repetition=&repetition();
                   1076:     my $score=0;
                   1077:     for (my $i=0;$i<$repetition;$i++) {
1.125     albertel 1078: 	# A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
1.72      albertel 1079: 	my $increase=&Apache::response::getresponse($i+1);
                   1080: 	if ($increase ne '') { $score+=$increase+1; }
                   1081:     }
                   1082:     my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1.91      albertel 1083:     if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1.72      albertel 1084:     my $pcr=$score/$weight;
                   1085:     $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
                   1086:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                   1087: 	'ASSIGNED_SCORE';
1.71      albertel 1088:     return $repetition;
1.78      albertel 1089: }
                   1090: 
                   1091: sub whichorder {
1.221     raeburn  1092:     my ($max,$randomize,$showall,$hash,$rndseed)=@_;
1.78      albertel 1093:     #&Apache::lonxml::debug("man $max randomize $randomize");
                   1094:     if (!defined(@{ $$hash{'names'} })) { return; }
                   1095:     my @names = @{ $$hash{'names'} };
                   1096:     my @whichopt =();
                   1097:     my (%top,@toplist,%bottom,@bottomlist);
                   1098:     if (!($showall || ($randomize eq 'no'))) {
                   1099: 	my $current=0;
                   1100: 	foreach my $name (@names) {
                   1101: 	    $current++;
                   1102: 	    if ($$hash{"$name.location"} eq 'top') {
                   1103: 		$top{$name}=$current;
                   1104: 	    } elsif ($$hash{"$name.location"} eq 'bottom') {
                   1105: 		$bottom{$name}=$current;
                   1106: 	    }
                   1107: 	}
                   1108:     }
                   1109:     my $topcount=0;
                   1110:     my $bottomcount=0;
                   1111:     while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
                   1112: 	   && ($#names > -1)) {
                   1113: 	#&Apache::lonxml::debug("Have $#whichopt max is $max");
                   1114: 	my $aopt;
                   1115: 	if ($showall || ($randomize eq 'no')) {
                   1116: 	    $aopt=0;
                   1117: 	} else {
                   1118: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
                   1119: 	}
                   1120: 	#&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
                   1121: 	$aopt=splice(@names,$aopt,1);
                   1122: 	#&Apache::lonxml::debug("Picked $aopt");
                   1123: 	if ($top{$aopt}) {
                   1124: 	    $toplist[$top{$aopt}]=$aopt;
                   1125: 	    $topcount++;
                   1126: 	} elsif ($bottom{$aopt}) {
                   1127: 	    $bottomlist[$bottom{$aopt}]=$aopt;
                   1128: 	    $bottomcount++;
                   1129: 	} else {
                   1130: 	    push (@whichopt,$aopt);
                   1131: 	}
                   1132:     }
                   1133:     for (my $i=0;$i<=$#toplist;$i++) {
                   1134: 	if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
                   1135:     }
                   1136:     for (my $i=0;$i<=$#bottomlist;$i++) {
                   1137: 	if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
                   1138:     }
                   1139:     return @whichopt;
1.71      albertel 1140: }
                   1141: 
1.85      albertel 1142: sub show_answer {
                   1143:     my $part   = $Apache::inputtags::part;
1.222     www      1144:     my $award  = $Apache::lonhomework::history{"resource.$part.awarded"};
1.85      albertel 1145:     my $status = $Apache::inputtags::status[-1];
1.222     www      1146:     return  ( ($award ==1
1.181     albertel 1147: 	       && &Apache::lonhomework::show_problem_status())
1.85      albertel 1148: 	      || $status eq "SHOW_ANSWER");
                   1149: }
1.87      albertel 1150: 
                   1151: sub analyze_store_foilgroup {
                   1152:     my ($shown,$attrs)=@_;
                   1153:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                   1154:     foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
                   1155: 	if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
                   1156: 	push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
                   1157: 	foreach my $attr (@$attrs) {
                   1158: 	    $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
                   1159: 		$Apache::response::foilgroup{"$name.".$attr};
                   1160: 	}
                   1161:     }
                   1162:     push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1.96      albertel 1163: }
                   1164: 
                   1165: sub check_if_computed {
                   1166:     my ($token,$parstack,$safeeval,$name)=@_;
                   1167:     my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1.106     matthew  1168:     if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1.96      albertel 1169: 	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                   1170: 	$Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
                   1171:     }
1.87      albertel 1172: }
                   1173: 
                   1174: sub pick_foil_for_concept {
                   1175:     my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
                   1176:     if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
                   1177:     my @names = @{ $Apache::response::conceptgroup{'names'} };
                   1178:     my $pick=int(&Math::Random::random_uniform() * ($#names+1));
                   1179:     my $name=$names[$pick];
                   1180:     push @{ $Apache::response::foilgroup{'names'} }, $name;
                   1181:     foreach my $attr (@$attrs) {
                   1182: 	$Apache::response::foilgroup{"$name.".$attr} =
                   1183: 	    $Apache::response::conceptgroup{"$name.".$attr};
                   1184:     }
                   1185:     my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
                   1186:     $Apache::response::foilgroup{"$name.concept"} = $concept;
                   1187:     &Apache::lonxml::debug("Selecting $name in $concept");
                   1188:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                   1189:     if ($target eq 'analyze') {
                   1190: 	push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
                   1191: 	      $concept);
                   1192: 	$Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
                   1193: 	    $Apache::response::conceptgroup{'names'};
                   1194: 	foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
                   1195: 	    push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
                   1196: 		  $name);
                   1197: 	    foreach my $attr (@$attrs) {
                   1198: 		$Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
                   1199: 		    $Apache::response::conceptgroup{"$name.$attr"};
                   1200: 	    }
                   1201: 	}
                   1202:     }
                   1203:     push(@{ $hinthash->{"$part_id.concepts"} },$concept);
                   1204:     $hinthash->{"$part_id.concept.$concept"}=
                   1205: 	$Apache::response::conceptgroup{'names'};
                   1206: 
                   1207: }
1.208     jms      1208: 
                   1209: =pod
                   1210: 
                   1211: =item get_response_param()
                   1212: 
                   1213: Get a parameter associated with a problem.
                   1214: Parameters:
                   1215: 	$id        - the id of the paramater, either a part id, 
                   1216:               or a partid and responspe id joined by _
                   1217: 	$name      - Name of the parameter to fetch
                   1218: 	$default   - Default value for the paramter.
                   1219: 
                   1220: =cut
                   1221: 
1.95      albertel 1222: sub get_response_param {
                   1223:     my ($id,$name,$default)=@_;
                   1224:     my $parameter;
1.120     albertel 1225:     if ($env{'request.state'} eq 'construct' &&
1.95      albertel 1226: 	defined($Apache::inputtags::params{$name})) {
                   1227: 	$parameter=$Apache::inputtags::params{$name};
                   1228:     } else {
                   1229: 	$parameter=&Apache::lonnet::EXT("resource.$id.$name");
                   1230:     }
                   1231:     if (!defined($parameter) ||	$parameter eq '') {
                   1232: 	$parameter = $default;
                   1233:     }
                   1234:     return $parameter;
                   1235: }
1.87      albertel 1236: 
1.113     albertel 1237: sub submitted {
                   1238:     my ($who)=@_;
                   1239:     
                   1240:     # when scatron grading any submission is a submission
1.120     albertel 1241:     if ($env{'form.submitted'} eq 'scantron') { return 1; }
1.113     albertel 1242:     # if the caller only cared if this was a scantron submission
                   1243:     if ($who eq 'scantron') { return 0; }
                   1244:     # if the Submit Answer button for this particular part was pressed
                   1245:     my $partid=$Apache::inputtags::part;
1.159     albertel 1246:     if ($env{'form.submitted'} eq "part_$partid") {
                   1247: 	return 1;
                   1248:     }
                   1249:     if ($env{'form.submitted'} eq "yes"
                   1250: 	&& defined($env{'form.submit_'.$partid})) {
                   1251: 	return 1;
                   1252:     }
1.122     albertel 1253:     # Submit All button on a .page was pressed
                   1254:     if (defined($env{'form.all_submit'})) { return 1; }
1.204     bisitz   1255:     # otherwise no submission occurred
1.113     albertel 1256:     return 0;
                   1257: }
1.117     albertel 1258: 
1.130     albertel 1259: sub add_to_gradingqueue {
1.149     albertel 1260:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.131     albertel 1261:     if (   $courseid eq ''
                   1262: 	|| $symb eq ''
1.135     albertel 1263: 	|| $env{'request.state'} eq 'construct'
                   1264: 	|| $Apache::lonhomework::type ne 'problem') {
1.131     albertel 1265: 	return;
                   1266:     }
1.130     albertel 1267: 
                   1268:     my %queue_info = ( 'type' => 'problem',
                   1269: 		       'time' => time);
                   1270: 
                   1271:     if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
                   1272: 	$queue_info{'slot'}=
                   1273: 	     $Apache::lonhomework::history{"resource.0.checkedin.slot"};
                   1274:     }
                   1275: 
                   1276:     my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
                   1277:     if ($result ne 'ok') {
                   1278: 	&Apache::lonxml::error("add_to_queue said $result");
                   1279:     }
                   1280: }
                   1281: 
1.208     jms      1282: =pod 
                   1283: 
                   1284: =item check_status()
                   1285: 
                   1286: basically undef and 0 (both false) mean that they still have work to do
                   1287: and all true values mean that they can't do any more work
                   1288: 
                   1289: 	a return of undef means it is unattempted
                   1290: 	a return of 0 means it is attmpted and wrong but still has tries
                   1291: 	a return of 1 means it is marked correct
                   1292: 	a return of 2 means they have exceed maximum number of tries
                   1293: 	a return of 3 means it after the answer date
                   1294: 
                   1295: =cut
                   1296: 
1.117     albertel 1297: sub check_status {
                   1298:     my ($id)=@_;
1.143     albertel 1299:     if (!defined($id)) { $id=$Apache::inputtags::part; }
1.117     albertel 1300:     my $curtime=&Apache::lonnet::EXT('system.time');
                   1301:     my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
                   1302:     my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
                   1303:     my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
                   1304:     if ( $opendate && $curtime > $opendate &&
                   1305:          $duedate && $curtime > $duedate &&
                   1306:          $answerdate && $curtime > $answerdate) {
                   1307:         return 3;
                   1308:     }
                   1309:     my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
                   1310:     if ($status =~ /^correct/) { return 1; }
                   1311:     if (!$status) { return undef; }
                   1312:     my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
                   1313:     if ($maxtries eq '') { $maxtries=2; }
                   1314:     my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
                   1315:     if ($curtries < $maxtries) { return 0; }
                   1316:     return 2;
                   1317: }
                   1318: 
1.177     albertel 1319: =pod
                   1320: 
1.210     raeburn  1321: =item setup_prior_tries_hash()
1.177     albertel 1322: 
                   1323:   Foreach each past .submission $func is called with 3 arguments
                   1324:      - the mode to set things up for (currently always 'grade')
                   1325:      - the stored .submission string
                   1326:      - The expansion of $data
                   1327: 
                   1328:   $data is an array ref containing elements that are either
                   1329:     - scalars that are other elements of the history hash to pass to $func
                   1330:     - ref to data to be passed untouched to $func
                   1331: 
1.221     raeburn  1332:   $questiontype is the questiontype (currently only passed in if
                   1333:       randomizebytry.
                   1334: 
1.177     albertel 1335: =cut
                   1336: 
1.162     albertel 1337: sub setup_prior_tries_hash {
1.221     raeburn  1338:     my ($func,$data,$questiontype) = @_;
1.162     albertel 1339:     my $part = $Apache::inputtags::part;
1.221     raeburn  1340:     my $id   = $Apache::inputtags::response[-1];
1.162     albertel 1341:     foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1.221     raeburn  1342:         my $partprefix = "$i:resource.$part";
                   1343: 	my $sub_key   = "$partprefix.$id.submission";
1.162     albertel 1344: 	next if (!exists($Apache::lonhomework::history{$sub_key}));
1.221     raeburn  1345:         my $type_key = "$partprefix.type";
                   1346:         my $type = $Apache::lonhomework::history{$type_key};
1.162     albertel 1347: 	my @other_data;
1.221     raeburn  1348:         if (ref($data) eq 'ARRAY') {
                   1349: 	    foreach my $datum (@{ $data }) {
                   1350: 	        if (ref($datum)) {
                   1351: 		    push(@other_data,$datum);
                   1352: 	        } else {
                   1353: 		    my $info_key = "$i:resource.$part.$id.$datum";
                   1354: 		    push(@other_data,$Apache::lonhomework::history{$info_key});
                   1355: 	        }
1.162     albertel 1356: 	    }
1.221     raeburn  1357:         }
                   1358:         if ($questiontype eq 'randomizetry') { 
                   1359:             my $order_key = "$partprefix.$id.foilorder";
                   1360:             my @whichopts = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
                   1361:             if (@whichopts > 0) {
                   1362:                 shift(@other_data);
                   1363:                 unshift(@other_data,\@whichopts);
                   1364:             }
                   1365:         }
1.162     albertel 1366: 	my $output =
                   1367: 	    &$func('grade',
                   1368: 		   $Apache::lonhomework::history{$sub_key},
                   1369: 		   \@other_data);
                   1370: 	if (defined($output)) {
                   1371: 	    $Apache::inputtags::submission_display{$sub_key} = $output;
                   1372: 	}
                   1373:     }
                   1374: }
                   1375: 
1.1       albertel 1376: 1;
                   1377: __END__
1.38      albertel 1378:  
1.208     jms      1379: =pod
                   1380: 
1.209     www      1381: =cut

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>