Annotation of loncom/homework/response.pm, revision 1.152

1.38      albertel    1: # The LearningOnline Network with CAPA
1.1       albertel    2: # various response type definitons response definition
1.53      albertel    3: #
1.152   ! albertel    4: # $Id: response.pm,v 1.151 2006/12/04 21:12:57 albertel 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: 
1.1       albertel   29: package Apache::response;
                     30: use strict;
1.93      albertel   31: use Apache::lonlocal;
1.120     albertel   32: use Apache::lonnet;
1.1       albertel   33: 
1.57      harris41   34: BEGIN {
1.139     www        35:     &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
1.1       albertel   36: }
                     37: 
1.13      albertel   38: sub start_response {
1.73      albertel   39:     my ($parstack,$safeeval)=@_;
1.136     albertel   40:     my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.73      albertel   41:     if ($#Apache::inputtags::import > -1) {
                     42: 	&Apache::lonxml::debug("Turning :$id: into");
                     43: 	$id = join('_',@Apache::inputtags::import).'_'.$id;
                     44: 	&Apache::lonxml::debug("New  :$id:");
                     45:     }
                     46:     push (@Apache::inputtags::response,$id);
                     47:     push (@Apache::inputtags::responselist,$id);
                     48:     @Apache::inputtags::inputlist=();
1.101     albertel   49:     if ($Apache::inputtags::part eq '' && 
                     50: 	!$Apache::lonhomework::ignore_response_errors) {
1.97      albertel   51: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
1.92      albertel   52:     }
                     53:     if ($Apache::inputtags::response_with_no_part &&
                     54: 	$Apache::inputtags::part ne '0') {
1.97      albertel   55: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
1.92      albertel   56:     }
                     57:     if ($Apache::inputtags::part eq '0') {
                     58: 	$Apache::inputtags::response_with_no_part=1;
                     59:     }
1.73      albertel   60:     return $id;
1.13      albertel   61: }
                     62: 
                     63: sub end_response {
1.79      albertel   64:     #pop @Apache::inputtags::response;
1.73      albertel   65:     @Apache::inputtags::inputlist=();
                     66:     return '';
1.13      albertel   67: }
                     68: 
1.41      albertel   69: sub start_hintresponse {
1.73      albertel   70:     my ($parstack,$safeeval)=@_;
1.136     albertel   71:     my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.123     albertel   72:     push (@Apache::inputtags::hint,$id);
                     73:     push (@Apache::inputtags::hintlist,$id);
1.73      albertel   74:     push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
                     75:     return $id;
1.41      albertel   76: }
                     77: 
                     78: sub end_hintresponse {
1.123     albertel   79:     pop @Apache::inputtags::hint;
1.73      albertel   80:     if (defined($Apache::inputtags::paramstack[-1])) {
                     81: 	%Apache::inputtags::params=
                     82: 	    @{ pop(@Apache::inputtags::paramstack) };
                     83:     }
                     84:     return '';
1.41      albertel   85: }
                     86: 
1.99      albertel   87: my @randomseeds;
                     88: sub pushrandomnumber {
                     89:     my $rand_alg=&Apache::lonnet::get_rand_alg();
                     90:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                     91: 	$rand_alg eq '64bit2') {
                     92: 	# do nothing
                     93:     } else {
                     94: 	my @seed=&Math::Random::random_get_seed();
1.127     albertel   95: 	push(@randomseeds,\@seed);
1.99      albertel   96:     }
1.127     albertel   97:     &Apache::response::setrandomnumber(@_);
1.99      albertel   98: }
                     99: sub poprandomnumber {
                    100:     my $rand_alg=&Apache::lonnet::get_rand_alg();
                    101:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    102: 	$rand_alg eq '64bit2') {
                    103: 	return;
                    104:     }
                    105:     my $seed=pop(@randomseeds);
                    106:     if ($seed) {
                    107: 	&Math::Random::random_set_seed(@$seed);
                    108:     } else {
                    109: 	&Apache::lonxml::error("Unable to restore random algorithm.");
                    110:     }
                    111: }
1.117     albertel  112: 
1.26      albertel  113: sub setrandomnumber {
1.127     albertel  114:     my ($ignore_id2) = @_;
1.73      albertel  115:     my $rndseed;
1.88      albertel  116:     $rndseed=&Apache::structuretags::setup_rndseed();
                    117:     if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
1.73      albertel  118:     &Apache::lonxml::debug("randseed $rndseed");
                    119:     #  $rndseed=unpack("%32i",$rndseed);
1.99      albertel  120:     my $rand_alg=&Apache::lonnet::get_rand_alg();
1.126     albertel  121:     my ($rndmod,$rndmod2);
1.119     albertel  122: 
                    123:     my ($id1,$id2,$shift_amt);
                    124:     if ($Apache::lonhomework::parsing_a_problem) {
                    125: 	$id1=$Apache::inputtags::part;
                    126: 	if (defined($Apache::inputtags::response[-1])) {
                    127: 	    $id2=$Apache::inputtags::response[-1];
                    128: 	}
                    129: 	$shift_amt=scalar(@Apache::inputtags::responselist);
                    130:     } elsif ($Apache::lonhomework::parsing_a_task) {
1.141     albertel  131: 	$id1=&Apache::bridgetask::get_dim_id();
                    132: 	if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
                    133: 	    $id2=$Apache::bridgetask::instance{$id1}[-1];
1.142     albertel  134: 	    $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
                    135: 	} else {
                    136: 	    $shift_amt=0;
1.119     albertel  137: 	}
                    138:     } 
                    139:     &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
1.99      albertel  140:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    141: 	$rand_alg eq '64bit2') {
1.119     albertel  142: 	$rndmod=(&Apache::lonnet::numval($id1) << 10);
                    143: 	if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
1.110     albertel  144:     } elsif ($rand_alg eq '64bit3') {
1.119     albertel  145: 	$rndmod=(&Apache::lonnet::numval2($id1) << 10);
                    146: 	if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
1.126     albertel  147:     } elsif ($rand_alg eq '64bit4') {
1.119     albertel  148: 	my $shift=(4*$shift_amt)%30;
                    149: 	$rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
                    150: 	if (defined($id2)) {
                    151: 	    $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
1.110     albertel  152: 	}
1.126     albertel  153:     } else {
                    154: 	($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
1.99      albertel  155:     }
1.127     albertel  156: 
1.99      albertel  157:     if ($rndseed =~/([,:])/) {
                    158: 	my $char=$1;
                    159: 	use integer;
                    160: 	my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
                    161: 	$num1+=$rndmod;
1.126     albertel  162: 	$num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
1.109     albertel  163: 	if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.99      albertel  164: 	$rndseed=$num1.$char.$num2;
                    165:     } else {
1.74      albertel  166: 	$rndseed+=$rndmod;
1.109     albertel  167: 	if($Apache::lonnet::_64bit) {
                    168: 	    use integer;
                    169: 	    $rndseed=(($rndseed<<32)>>32);
                    170: 	}
1.74      albertel  171:     }
1.111     albertel  172:     &Apache::lonxml::debug("randseed $rndmod $rndseed");
1.74      albertel  173:     &Apache::lonnet::setup_random_from_rndseed($rndseed);
1.73      albertel  174:     return '';
1.26      albertel  175: }
                    176: 
1.7       www       177: sub meta_parameter_write {
1.38      albertel  178:     my ($name,$type,$default,$display)=@_;
1.41      albertel  179:     my $partref=$Apache::inputtags::part;
                    180:     my $result='<parameter part="'.$Apache::inputtags::part.'"';
                    181:     if (defined($Apache::inputtags::response[-1])) {
1.73      albertel  182: 	$result.=            ' id="'.$Apache::inputtags::response[-1].'"';
                    183: 	$partref.='_'.$Apache::inputtags::response[-1];
1.41      albertel  184:     }
                    185:     $result.=            ' name="'.$name.'"'.
                    186:                          ' type="'.$type.'"'.
1.89      albertel  187: (defined($default)?' default="'.$default.'"':'').
                    188: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
1.41      albertel  189:              .'></parameter>'
                    190:              ."\n";
                    191:     return $result;
1.33      www       192: }
                    193: 
                    194: sub meta_package_write {
                    195:     my $name=shift;
1.41      albertel  196:     my $result = '<parameter part="'.$Apache::inputtags::part.'"';
                    197:     if(defined($Apache::inputtags::response[-1])) {
1.73      albertel  198: 	$result.= ' id="'.$Apache::inputtags::response[-1].'"';
1.41      albertel  199:     }
                    200:     $result.=' package="'.$name.'"></parameter>'."\n";
                    201:     return $result;
1.7       www       202: }
                    203: 
                    204: sub meta_stores_write {
1.10      www       205:     my ($name,$type,$display)=@_;
1.41      albertel  206:     my $partref=$Apache::inputtags::part;
                    207:     my $result = '<stores part="'.$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="'.$type.'"'.
                    214: 	            ' display="'.$display.' [Part: '.$partref.']"'.
                    215: 		      "></stores>\n";
1.7       www       216: }
                    217: 
                    218: sub mandatory_part_meta {
                    219: #
                    220: # Autogenerate metadata for mandatory
                    221: # input (from RAT or lonparmset) and 
                    222: # output (to lonspreadsheet)
                    223: # of each part
                    224: #
1.73      albertel  225:     return
1.34      www       226: #    &meta_parameter_write('opendate','date_start','',
                    227: #                          'Opening Date').
                    228: #    &meta_parameter_write('duedate','date_end','',
                    229: #                          'Due Date').
                    230: #    &meta_parameter_write('answerdate','date_start','',
                    231: #                          'Show Answer Date').
                    232: #    &meta_parameter_write('weight','int_zeropos','',
                    233: #                          'Available Points').
                    234: #    &meta_parameter_write('maxtries','int_pos','',
                    235: #                          'Maximum Number of Tries').
1.73      albertel  236: 	&meta_package_write('part').
                    237:         &meta_stores_write('solved','string',
                    238: 			   'Problem Status').
                    239:         &meta_stores_write('tries','int_zeropos',
                    240: 			   'Number of Attempts').
                    241:         &meta_stores_write('awarded','float',
                    242: 			   'Partial Credit Factor');
1.7       www       243: #
                    244: # Note: responseid-specific data 'submission' and 'awarddetail'
                    245: # not available to spreadsheet -> skip here
                    246: #
1.86      albertel  247: }
                    248: 
                    249: sub meta_part_order {
                    250:     if (@Apache::inputtags::partlist) {
                    251: 	my @parts=@Apache::inputtags::partlist;
                    252: 	shift(@parts);
1.100     albertel  253: 	return '<partorder>'.join(',',@parts).'</partorder>'."\n";
1.86      albertel  254:     } else {
1.100     albertel  255: 	return '<partorder>0</partorder>'."\n";
                    256:     }
                    257: }
                    258: 
                    259: sub meta_response_order {
                    260:     if (@Apache::inputtags::responselist) {
                    261: 	return '<responseorder>'.join(',',@Apache::inputtags::responselist).
                    262: 	    '</responseorder>'."\n";
1.86      albertel  263:     }
1.14      albertel  264: }
                    265: 
1.15      albertel  266: sub check_for_previous {
1.73      albertel  267:     my ($curresponse,$partid,$id) = @_;
                    268:     my %previous;
                    269:     $previous{'used'} = 0;
                    270:     foreach my $key (sort(keys(%Apache::lonhomework::history))) {
1.98      albertel  271: 	if ($key =~ /resource\.$partid\.$id\.submission$/) {
1.73      albertel  272: 	    &Apache::lonxml::debug("Trying $key");
                    273: 	    my $pastresponse=$Apache::lonhomework::history{$key};
                    274: 	    if ($pastresponse eq $curresponse) {
                    275: 		$previous{'used'} = 1;
                    276: 		my $history;
                    277: 		if ( $key =~ /^(\d+):/ ) {
                    278: 		    $history=$1;
                    279: 		    $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
                    280: 		    $previous{'last'}='0';
                    281: 		    push(@{ $previous{'version'} },$history);
                    282: 		} else {
                    283: 		    $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
                    284: 		    $previous{'last'}='1';
                    285: 		}
                    286: 		if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN';	}
                    287: 		&Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
                    288: 	    }
1.32      albertel  289: 	}
1.73      albertel  290:     }
                    291:     &Apache::lonhomework::showhash(%previous);
                    292:     return %previous;
1.54      albertel  293: }
                    294: 
                    295: sub handle_previous {
1.73      albertel  296:     my ($previous,$ad)=@_;
                    297:     if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
                    298: 	if ($$previous{'last'}) {
                    299: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
1.107     albertel  300: 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
                    301: 	} elsif ($Apache::lonhomework::type ne 'survey') {
1.73      albertel  302: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
1.107     albertel  303: 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
1.73      albertel  304: 	}
1.54      albertel  305:     }
1.44      albertel  306: }
                    307: 
1.45      albertel  308: sub view_or_modify {
1.149     albertel  309:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.73      albertel  310:     my $myself=0;
1.120     albertel  311:     if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
1.73      albertel  312: 	$myself=1;
                    313:     }
                    314:     my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
                    315:     my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
                    316:     if ($mgr) { return "M"; }
                    317:     if ($vgr) { return "V"; }
                    318:     if ($myself) { return "V"; }
                    319:     return '';
1.45      albertel  320: }
                    321: 
1.44      albertel  322: sub start_dataresponse {
1.73      albertel  323:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    324:     my $id = &Apache::response::start_response($parstack,$safeeval);
                    325:     my $result;
                    326:     if ($target eq 'web') {
                    327: 	$result = $token->[2]->{'display'}.':';
                    328:     } elsif ($target eq 'meta') {
                    329: 	$result = &Apache::response::meta_stores_write($token->[2]->{'name'},
                    330: 						       $token->[2]->{'type'},
                    331: 						       $token->[2]->{'display'});
                    332: 	$result .= &Apache::response::meta_package_write('dataresponse');
                    333:     }
                    334:     return $result;
1.44      albertel  335: }
                    336: 
                    337: sub end_dataresponse {
1.73      albertel  338:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    339:     my $result;
                    340:     if ( $target eq 'web' ) {
                    341:     } elsif ($target eq 'grade' ) {
1.120     albertel  342: 	if ( defined $env{'form.submitted'}) {
1.149     albertel  343: 	    my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
1.73      albertel  344: 	    my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
                    345: 	    if ($allowed) {
1.94      albertel  346: 		&Apache::response::setup_params('dataresponse',$safeeval);
1.73      albertel  347: 		my $partid = $Apache::inputtags::part;
                    348: 		my $id = $Apache::inputtags::response['-1'];
1.120     albertel  349: 		my $response = $env{'form.HWVAL_'.$id};
1.73      albertel  350: 		my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    351: 		if ( $response =~ /[^\s]/) {
                    352: 		    $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
                    353: 		    $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
                    354: 		    $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
                    355: 		}
                    356: 	    } else {
                    357: 		$result='Not Permitted to change values.'
                    358: 	    }
1.45      albertel  359: 	}
1.73      albertel  360:     }
                    361:     &Apache::response::end_response;
                    362:     return $result;
1.3       albertel  363: }
                    364: 
1.129     albertel  365: sub start_customresponse {
1.128     albertel  366:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    367:     my $id = &Apache::response::start_response($parstack,$safeeval);
1.129     albertel  368:     push(@Apache::lonxml::namespace,'customresponse');
1.128     albertel  369:     my $result;
1.129     albertel  370:     undef($Apache::response::custom_answer);
1.128     albertel  371:     &Apache::lonxml::register('Apache::response',('answer'));
                    372:     if ($target eq 'web') {
                    373:   	if (  &Apache::response::show_answer() ) {
                    374: 	    my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    375: 						   $safeeval);
1.152   ! albertel  376: 	    $Apache::inputtags::answertxt{$id}=[$answer];
1.128     albertel  377: 	}
                    378:     } elsif ($target eq 'edit') {
                    379: 	$result.=&Apache::edit::tag_start($target,$token);
                    380: 	$result.=&Apache::edit::text_arg('String to display for answer:',
1.145     albertel  381: 					 'answerdisplay',$token);
1.128     albertel  382: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    383:     } elsif ($target eq 'modified') {
                    384: 	my $constructtag;
                    385: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
                    386: 						  $safeeval,'answerdisplay');
                    387: 	if ($constructtag) {
                    388: 	    $result = &Apache::edit::rebuild_tag($token);
                    389: 	    $result.=&Apache::edit::handle_insert();
                    390: 	}
                    391:     } elsif ($target eq 'answer' || $target eq 'grade') {
                    392: 	&Apache::response::reset_params();
                    393:     } elsif ($target eq 'meta') {
1.129     albertel  394: 	$result .= &Apache::response::meta_package_write('customresponse');
1.128     albertel  395:     }
                    396:     return $result;
                    397: }
                    398: 
1.129     albertel  399: sub end_customresponse {
1.128     albertel  400:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    401:     my $result;
                    402:     my $part=$Apache::inputtags::part;
                    403:     my $id=$Apache::inputtags::response[-1];
                    404:     if ( $target eq 'grade' && &Apache::response::submitted() ) {
                    405: 	my $response = &Apache::response::getresponse();
1.146     albertel  406: 	if ($Apache::lonhomework::type eq 'exam' ||
                    407: 	    &Apache::response::submitted('scantron')) {
                    408: 	    &Apache::response::scored_response($part,$id);
                    409: 	} elsif ( $response =~ /[^\s]/ && 
                    410: 		  $Apache::response::custom_answer_type eq 'loncapa/perl') {
1.128     albertel  411: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    412: 		&Apache::lonxml::default_homework_load($safeeval);
                    413: 	    }
                    414: 	    my %previous = &Apache::response::check_for_previous($response,
                    415: 								 $part,$id);
                    416: 	    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    417: 		$response;
                    418: 	    my $error;
1.129     albertel  419: 	    ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
1.128     albertel  420: 		$response;
                    421: 	    
1.129     albertel  422: 	    my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
1.128     albertel  423: 	    if (!&Apache::inputtags::valid_award($award)) {
                    424: 		$error = $award;
                    425: 		$award = 'ERROR';
                    426: 	    }
                    427: 	    &Apache::response::handle_previous(\%previous,$award);
                    428: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                    429: 		$award;
                    430: 	    if ($error) {
                    431: 		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
                    432: 		    $error;
                    433: 	    }
                    434: 	}
1.146     albertel  435:     } elsif ( $target eq 'answer') {
                    436: 	$result  = &Apache::response::answer_header('customresponse');
                    437: 	my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    438: 						$safeeval);
                    439: 	if ($env{'form.answer_output_mode'} ne 'tex') {
                    440: 	    $answer = '<b>'.$answer.'</b>';
                    441: 	}
                    442: 	$result .= &Apache::response::answer_part('customresponse',$answer);
                    443: 	$result .= &Apache::response::answer_footer('customresponse');
                    444:     }
                    445:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || 
                    446: 	$target eq 'tex' || $target eq 'analyze') {
                    447: 	&Apache::lonxml::increment_counter(&Apache::response::repetition());
1.128     albertel  448:     }
                    449:     pop(@Apache::lonxml::namespace);
                    450:     &Apache::lonxml::deregister('Apache::response',('answer'));
                    451:     &Apache::response::end_response();
                    452:     return $result;
                    453: }
                    454: 
1.140     www       455: 
1.139     www       456: sub start_mathresponse {
1.140     www       457:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    458:     my $id = &Apache::response::start_response($parstack,$safeeval);
                    459:     push(@Apache::lonxml::namespace,'mathresponse');
1.139     www       460:     my $result;
1.140     www       461:     undef($Apache::response::custom_answer);
                    462:     &Apache::lonxml::register('Apache::response',('answer'));
                    463:     if ($target eq 'web') {
                    464:   	if (  &Apache::response::show_answer() ) {
                    465: 	    my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    466: 						   $safeeval);
1.152   ! albertel  467: 	    $Apache::inputtags::answertxt{$id}=[$answer];
1.140     www       468: 	}
                    469:     } elsif ($target eq 'edit') {
                    470: 	$result.=&Apache::edit::tag_start($target,$token);
                    471: 	$result.=&Apache::edit::text_arg('String to display for answer:',
                    472: 					 'answerdisplay',$token);
1.150     www       473: 	$result.=&Apache::edit::select_arg('Algebra System:',
                    474: 					   'cas',
                    475: 					   ['maxima'],
                    476: 					   $token);
                    477: 	$result.=&Apache::edit::text_arg('Algebra System:',
                    478: 					 'cas',$token);
                    479: 	$result.=&Apache::edit::text_arg('Argument Array:',
                    480: 					 'args',$token);
1.140     www       481: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    482:     } elsif ($target eq 'modified') {
                    483: 	my $constructtag;
                    484: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
                    485: 						  $safeeval,'answerdisplay');
                    486: 	if ($constructtag) {
                    487: 	    $result = &Apache::edit::rebuild_tag($token);
                    488: 	    $result.=&Apache::edit::handle_insert();
                    489: 	}
                    490:     } elsif ($target eq 'answer' || $target eq 'grade') {
                    491: 	&Apache::response::reset_params();
                    492:     } elsif ($target eq 'meta') {
                    493: 	$result .= &Apache::response::meta_package_write('mathresponse');
1.139     www       494:     }
                    495:     return $result;
                    496: }
                    497: 
                    498: sub end_mathresponse {
1.140     www       499:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    500:     my $result;
                    501:     my $part=$Apache::inputtags::part;
                    502:     my $id=$Apache::inputtags::response[-1];
                    503:     if ( $target eq 'grade' && &Apache::response::submitted() ) {
                    504: 	my $response = &Apache::response::getresponse();
1.150     www       505: 	if ( $response =~ /[^\s]/ ) {
1.140     www       506: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    507: 		&Apache::lonxml::default_homework_load($safeeval);
                    508: 	    }
                    509: 	    my %previous = &Apache::response::check_for_previous($response,
                    510: 								 $part,$id);
                    511: 	    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    512: 		$response;
                    513: 	    my $error;
                    514: 	    ${$safeeval->varglob('LONCAPA::mathresponse_submission')}=
                    515: 		$response;
                    516: 	    
                    517: 	    my $award = &Apache::run::run('{ my $submission=$LONCAPA::mathresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
                    518: 	    if (!&Apache::inputtags::valid_award($award)) {
1.151     albertel  519: 		$error = $award;
                    520: 		$award = 'ERROR';
1.140     www       521: 	    }
                    522: 	    &Apache::response::handle_previous(\%previous,$award);
                    523: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                    524: 		$award;
                    525: 	    if ($error) {
                    526: 		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
                    527: 		    $error;
                    528: 	    }
                    529: 	}
                    530:     }
                    531:     pop(@Apache::lonxml::namespace);
                    532:     &Apache::lonxml::deregister('Apache::response',('answer'));
                    533:     &Apache::response::end_response();
                    534:     return $result;
1.139     www       535: }
                    536: 
1.140     www       537: 
1.128     albertel  538: sub start_answer {
                    539:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    540:     my $result;
1.129     albertel  541:     $Apache::response::custom_answer=
1.128     albertel  542: 	&Apache::lonxml::get_all_text_unbalanced("/answer",$parser);
1.129     albertel  543:     $Apache::response::custom_answer_type=
1.128     albertel  544: 	lc(&Apache::lonxml::get_param('type',$parstack,$safeeval));
1.129     albertel  545:     $Apache::response::custom_answer_type =~ s/\s+//g;
1.128     albertel  546:     if ($target eq "edit" ) {
                    547: 	$result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
                    548: 	$result.=&Apache::edit::editfield($token->[1],
1.129     albertel  549: 					  $Apache::response::custom_answer,
1.128     albertel  550: 					  '',80,4);
                    551:     } elsif ( $target eq "modified" ) {
                    552: 	$result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
                    553:     }
                    554:     return $result;
                    555: }
                    556: 
                    557: sub end_answer {
                    558:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    559:     if ($target eq 'edit' ) {
                    560: 	return &Apache::edit::end_table();
                    561:     }
                    562: }
                    563: 
1.83      albertel  564: sub decide_package {
                    565:     my ($tagstack)=@_;
                    566:     my $package;
                    567:     if ($$tagstack[-1] eq 'parameter') {
                    568: 	$package='part';
                    569:     } else {
                    570: 	my $i=-1;
                    571: 	while (defined($$tagstack[$i])) {
                    572: 	    if ($$tagstack[$i] =~ /(response|hint)$/) {
                    573: 		$package=$$tagstack[$i];
                    574: 		last;
                    575: 	    }
                    576: 	    $i--;
                    577: 	}
                    578:     }
                    579:     return $package;
                    580: }
                    581: 
1.3       albertel  582: sub start_responseparam {
1.73      albertel  583:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    584:     my $result='';
                    585:     if ($target eq 'meta') {
                    586: 	$result = &meta_parameter_write($token->[2]->{'name'},
                    587: 					$token->[2]->{'type'},
                    588: 					$token->[2]->{'default'},
                    589: 					$token->[2]->{'description'});
                    590:     } elsif ($target eq 'edit') {
                    591: 	$result.=&Apache::edit::tag_start($target,$token);
1.83      albertel  592: 	my $optionlist;
                    593: 	my $package=&decide_package($tagstack);
                    594: 	foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
                    595: 	    if ($key =~ /^\Q$package\E&(.*)&display$/) {
                    596: 		$optionlist.='<option value="'.$1.'">'.
                    597: 		    $Apache::lonnet::packagetab{$key}.'</option>';
                    598: 	    }
                    599: 	}
                    600: 	if (defined($optionlist)) {
                    601: 	    $result.='Use template: <select name="'.
                    602: 		&Apache::edit::html_element_name('parameter_package').'">'.
                    603: 		    '<option value=""></option>'.$optionlist.'</select><br />';
                    604: 	}
1.73      albertel  605: 	$result.=&Apache::edit::text_arg('Name:','name',$token).
                    606: 	    &Apache::edit::text_arg('Type:','type',$token).
                    607: 		&Apache::edit::text_arg('Description:','description',$token).
                    608: 		    &Apache::edit::text_arg('Default:','default',$token).
                    609: 			"</td></tr>";
                    610: 	$result.=&Apache::edit::end_table;
                    611:     } elsif ($target eq 'modified') {
1.83      albertel  612: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    613: 						     $safeeval,'name','type',
                    614: 						     'description','default');
                    615: 	my $element=&Apache::edit::html_element_name('parameter_package');
1.120     albertel  616: 	if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
                    617: 	    my $name=$env{"form.$element"};
1.83      albertel  618: 	    my $tag=&decide_package($tagstack);
                    619: 	    $token->[2]->{'name'}=$name;
                    620: 	    $token->[2]->{'type'}=
                    621: 		$Apache::lonnet::packagetab{"$tag&$name&type"};
                    622: 	    $token->[2]->{'description'}=
                    623: 		$Apache::lonnet::packagetab{"$tag&$name&display"};
                    624: 	    $token->[2]->{'default'}=
                    625: 		$Apache::lonnet::packagetab{"$tag&$name&default"};
                    626: 	    $constructtag=1;
                    627: 	}
1.73      albertel  628: 	if ($constructtag) {
                    629: 	    $result = &Apache::edit::rebuild_tag($token);
                    630: 	    $result.=&Apache::edit::handle_insert();
                    631: 	}
                    632:     } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
                    633: 	     $target eq 'tex' || $target eq 'analyze' ) {
1.120     albertel  634: 	if ($env{'request.state'} eq 'construct') {
1.73      albertel  635: 	    my $name   =&Apache::lonxml::get_param('name',$parstack,$safeeval);
                    636: 	    my $default=&Apache::lonxml::get_param('default',$parstack,
                    637: 						     $safeeval);
                    638: 	    if ($name) {$Apache::inputtags::params{$name}=$default;}
                    639: 	}
1.52      albertel  640:     }
1.73      albertel  641:     return $result;
1.3       albertel  642: }
                    643: 
                    644: sub end_responseparam {
1.73      albertel  645:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    646:     if ($target eq 'edit') { return ('','no'); }
                    647:     return '';
1.55      albertel  648: }
                    649: 
                    650: sub start_parameter {
1.114     albertel  651:     return &start_responseparam(@_);
1.55      albertel  652: }
                    653: 
                    654: sub end_parameter {
1.114     albertel  655:     return &end_responseparam(@_);
1.42      albertel  656: }
                    657: 
1.67      albertel  658: sub reset_params {
                    659:     %Apache::inputtags::params=();
                    660: }
                    661: 
1.42      albertel  662: sub setup_params {
1.94      albertel  663:     my ($tag,$safeeval) = @_;
1.42      albertel  664: 
1.120     albertel  665:     if ($env{'request.state'} eq 'construct') { return; }
1.73      albertel  666:     my %paramlist=();
                    667:     foreach my $key (keys(%Apache::lonnet::packagetab)) {
                    668: 	if ($key =~ /^$tag/) {
                    669: 	    my ($package,$name) = split(/&/,$key);
                    670: 	    $paramlist{$name}=1;
                    671: 	}
1.42      albertel  672:     }
1.73      albertel  673:     foreach my $key (keys(%paramlist)) {
                    674: 	my $entry= 'resource.'.$Apache::inputtags::part;
                    675: 	if (defined($Apache::inputtags::response[-1])) {
                    676: 	    $entry.='_'.$Apache::inputtags::response[-1];
                    677: 	}
                    678: 	$entry.='.'.$key;
                    679: 	&Apache::lonxml::debug("looking for $entry");
                    680: 	my $value = &Apache::lonnet::EXT("$entry");
                    681: 	&Apache::lonxml::debug("$key has value :$value:");
                    682: 	if ($value eq 'con_lost' || $value =~ /^error:/) {
                    683: 	    &Apache::lonxml::debug("using nothing");
                    684: 	    $Apache::inputtags::params{$key}='';
                    685: 	} else {
1.94      albertel  686: 	    my $string="{return qq\0".$value."\0}";
                    687: 	    my $newvalue=&Apache::run::run($string,$safeeval,1);
                    688: 	    if (defined($newvalue)) { $value=$newvalue; }
1.73      albertel  689: 	    $Apache::inputtags::params{$key}=$value;
                    690: 	}
1.42      albertel  691:     }
1.48      albertel  692: }
                    693: 
1.132     albertel  694: {
                    695:     my @answer_bits;
1.147     albertel  696:     my $need_row_start;
1.132     albertel  697: 
1.48      albertel  698: sub answer_header {
1.147     albertel  699:     my ($type,$increment,$rows) = @_;
1.73      albertel  700:     my $result;
1.120     albertel  701:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.132     albertel  702: 	undef(@answer_bits);
1.133     albertel  703: 	my $bit;
                    704: 	if ($Apache::lonhomework::type eq 'exam') {
                    705: 	    $bit = ($Apache::lonxml::counter+$increment).') ';
                    706: 	} else {
                    707: 	    $bit .= ' Answer for Part: \verb|'.
                    708: 		$Apache::inputtags::part.'| ';
                    709: 	}
                    710: 	push(@answer_bits,$bit);
1.73      albertel  711:     } else {
1.147     albertel  712: 	my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
1.132     albertel  713: 	$result  = '<table border="1"><tr>';
                    714: 	if ($Apache::lonhomework::type eq 'exam') {
1.147     albertel  715: 	    $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
1.132     albertel  716: 	} else {
1.147     albertel  717: 	    $result .= $td.&mt('Answer for Part: [_1]',
                    718: 			       $Apache::inputtags::part).'</td>';
1.132     albertel  719: 	}
                    720: 	$result .= "\n";
1.147     albertel  721: 	$need_row_start = 0;
                    722:     }
                    723:     return $result;
                    724: }
                    725: 
                    726: sub next_answer {
                    727:     my ($type) = @_;
                    728:     my $result;
                    729:     if ($env{'form.answer_output_mode'} eq 'tex') {
                    730: 	# FIXME ... need to do something with tex mode
                    731:     } else {
                    732: 	$result .= "</tr>";
                    733: 	$need_row_start = 1;
1.73      albertel  734:     }
                    735:     return $result;
1.48      albertel  736: }
                    737: 
                    738: sub answer_part {
1.148     albertel  739:     my ($type,$answer,$args) = @_;
1.73      albertel  740:     my $result;
1.120     albertel  741:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.148     albertel  742: 	if (!$args->{'no_verbatim'}) {
                    743: 	    my $to_use='|';
                    744: 	    foreach my $value (32..126) {
                    745: 		my $char=pack('c',$value);
                    746: 		if ($answer !~ /\Q$char\E/) {
                    747: 		    $to_use=$char;
                    748: 		    last;
                    749: 		}
                    750: 	    }
                    751: 	    if ($answer ne '') {
                    752: 		$answer = '\verb'.$to_use.$answer.$to_use;
1.124     albertel  753: 	    }
                    754: 	}
1.132     albertel  755: 	if ($answer ne '') {
1.148     albertel  756: 	    push(@answer_bits,$answer);
1.132     albertel  757: 	}
1.73      albertel  758:     } else {
1.147     albertel  759: 	if ($need_row_start) {
                    760: 	    $result .= '<tr>';
                    761: 	    $need_row_start = 0;
                    762: 	}
                    763: 	$result .= '<td>'.$answer.'</td>';
1.73      albertel  764:     }
                    765:     return $result;
1.48      albertel  766: }
                    767: 
                    768: sub answer_footer {
1.73      albertel  769:     my ($type) = @_;
                    770:     my $result;
1.120     albertel  771:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.133     albertel  772: 	my $columns = scalar(@answer_bits);
1.134     albertel  773: 	$result  = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline ';
1.133     albertel  774: 	$result .= join(' & ',@answer_bits);
1.132     albertel  775: 	$result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
1.73      albertel  776:     } else {
1.80      albertel  777: 	$result = '</tr></table>';
1.73      albertel  778:     }
                    779:     return $result;
1.1       albertel  780: }
1.2       albertel  781: 
1.132     albertel  782: }
                    783: 
1.62      albertel  784: sub showallfoils {
1.120     albertel  785:     if (defined($env{'form.showallfoils'})) {
1.149     albertel  786: 	my ($symb)=&Apache::lonnet::whichuser();
1.120     albertel  787: 	if (($env{'request.state'} eq 'construct') || 
                    788: 	    ($env{'user.adv'} && $symb eq '')      ||
1.118     foxr      789:             ($Apache::lonhomework::viewgrades) ) {
1.102     albertel  790: 	    return 1;
                    791: 	}
1.73      albertel  792:     }
1.108     albertel  793:     if ($Apache::lonhomework::type eq 'survey') { return 1; }
1.102     albertel  794:     return 0;
1.70      albertel  795: }
                    796: 
                    797: sub getresponse {
1.90      albertel  798:     my ($temp,$resulttype)=@_;
1.70      albertel  799:     my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
                    800:     my $response;
                    801:     if (!defined($temp)) {
                    802: 	$temp=1;
                    803:     } else {
                    804: 	$formparm.=":$temp";
                    805:     }
                    806:     my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
                    807: 		    'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
                    808: 		    'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
                    809: 		    'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
1.120     albertel  810:     if ($env{'form.submitted'} eq 'scantron') {
1.71      albertel  811: 	my $part  = $Apache::inputtags::part;
                    812: 	my $id    = $Apache::inputtags::response[-1];
1.120     albertel  813: 	$response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
1.70      albertel  814: 			 '.answer'};
1.71      albertel  815: 	# save bubbled letter for later
                    816: 	$Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
                    817: 	    $response;
1.90      albertel  818: 	if ($resulttype ne 'letter') {
1.104     albertel  819: 	    if ($resulttype eq 'A is 1') {
1.105     albertel  820: 		$response = $let_to_num{$response}+1;
                    821: 	    } else {
1.104     albertel  822: 		$response = $let_to_num{$response};
                    823: 	    }
1.90      albertel  824: 	}
1.70      albertel  825:     } else {
1.120     albertel  826: 	$response = $env{$formparm};
1.70      albertel  827:     }
                    828:     return $response;
1.62      albertel  829: }
1.71      albertel  830: 
                    831: sub repetition {
                    832:     my $id = $Apache::inputtags::part;
                    833:     my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.121     albertel  834:     if (!defined($weight) || ($weight eq '')) { $weight=1; }
1.125     albertel  835:     my $repetition = int($weight/10);
                    836:     if ($weight % 10 != 0) { $repetition++; } 
1.72      albertel  837:     return $repetition;
                    838: }
                    839: 
                    840: sub scored_response {
                    841:     my ($part,$id)=@_;
                    842:     my $repetition=&repetition();
                    843:     my $score=0;
                    844:     for (my $i=0;$i<$repetition;$i++) {
1.125     albertel  845: 	# A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
1.72      albertel  846: 	my $increase=&Apache::response::getresponse($i+1);
                    847: 	if ($increase ne '') { $score+=$increase+1; }
                    848:     }
                    849:     my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1.91      albertel  850:     if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1.72      albertel  851:     my $pcr=$score/$weight;
                    852:     $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
                    853:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                    854: 	'ASSIGNED_SCORE';
1.71      albertel  855:     return $repetition;
1.78      albertel  856: }
                    857: 
                    858: sub whichorder {
                    859:     my ($max,$randomize,$showall,$hash)=@_;
                    860:     #&Apache::lonxml::debug("man $max randomize $randomize");
                    861:     if (!defined(@{ $$hash{'names'} })) { return; }
                    862:     my @names = @{ $$hash{'names'} };
                    863:     my @whichopt =();
                    864:     my (%top,@toplist,%bottom,@bottomlist);
                    865:     if (!($showall || ($randomize eq 'no'))) {
                    866: 	my $current=0;
                    867: 	foreach my $name (@names) {
                    868: 	    $current++;
                    869: 	    if ($$hash{"$name.location"} eq 'top') {
                    870: 		$top{$name}=$current;
                    871: 	    } elsif ($$hash{"$name.location"} eq 'bottom') {
                    872: 		$bottom{$name}=$current;
                    873: 	    }
                    874: 	}
                    875:     }
                    876:     my $topcount=0;
                    877:     my $bottomcount=0;
                    878:     while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
                    879: 	   && ($#names > -1)) {
                    880: 	#&Apache::lonxml::debug("Have $#whichopt max is $max");
                    881: 	my $aopt;
                    882: 	if ($showall || ($randomize eq 'no')) {
                    883: 	    $aopt=0;
                    884: 	} else {
                    885: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
                    886: 	}
                    887: 	#&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
                    888: 	$aopt=splice(@names,$aopt,1);
                    889: 	#&Apache::lonxml::debug("Picked $aopt");
                    890: 	if ($top{$aopt}) {
                    891: 	    $toplist[$top{$aopt}]=$aopt;
                    892: 	    $topcount++;
                    893: 	} elsif ($bottom{$aopt}) {
                    894: 	    $bottomlist[$bottom{$aopt}]=$aopt;
                    895: 	    $bottomcount++;
                    896: 	} else {
                    897: 	    push (@whichopt,$aopt);
                    898: 	}
                    899:     }
                    900:     for (my $i=0;$i<=$#toplist;$i++) {
                    901: 	if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
                    902:     }
                    903:     for (my $i=0;$i<=$#bottomlist;$i++) {
                    904: 	if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
                    905:     }
                    906:     return @whichopt;
1.71      albertel  907: }
                    908: 
1.85      albertel  909: sub show_answer {
                    910:     my $part   = $Apache::inputtags::part;
                    911:     my $award  = $Apache::lonhomework::history{"resource.$part.solved"};
                    912:     my $status = $Apache::inputtags::status[-1];
                    913:     return  ( ($award =~ /^correct/
                    914: 	       && lc($Apache::lonhomework::problemstatus) ne 'no')
                    915: 	      || $status eq "SHOW_ANSWER");
                    916: }
1.87      albertel  917: 
                    918: sub analyze_store_foilgroup {
                    919:     my ($shown,$attrs)=@_;
                    920:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                    921:     foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
                    922: 	if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
                    923: 	push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
                    924: 	foreach my $attr (@$attrs) {
                    925: 	    $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
                    926: 		$Apache::response::foilgroup{"$name.".$attr};
                    927: 	}
                    928:     }
                    929:     push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1.96      albertel  930: }
                    931: 
                    932: sub check_if_computed {
                    933:     my ($token,$parstack,$safeeval,$name)=@_;
                    934:     my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1.106     matthew   935:     if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1.96      albertel  936: 	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                    937: 	$Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
                    938:     }
1.87      albertel  939: }
                    940: 
                    941: sub pick_foil_for_concept {
                    942:     my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
                    943:     if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
                    944:     my @names = @{ $Apache::response::conceptgroup{'names'} };
                    945:     my $pick=int(&Math::Random::random_uniform() * ($#names+1));
                    946:     my $name=$names[$pick];
                    947:     push @{ $Apache::response::foilgroup{'names'} }, $name;
                    948:     foreach my $attr (@$attrs) {
                    949: 	$Apache::response::foilgroup{"$name.".$attr} =
                    950: 	    $Apache::response::conceptgroup{"$name.".$attr};
                    951:     }
                    952:     my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
                    953:     $Apache::response::foilgroup{"$name.concept"} = $concept;
                    954:     &Apache::lonxml::debug("Selecting $name in $concept");
                    955:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                    956:     if ($target eq 'analyze') {
                    957: 	push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
                    958: 	      $concept);
                    959: 	$Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
                    960: 	    $Apache::response::conceptgroup{'names'};
                    961: 	foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
                    962: 	    push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
                    963: 		  $name);
                    964: 	    foreach my $attr (@$attrs) {
                    965: 		$Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
                    966: 		    $Apache::response::conceptgroup{"$name.$attr"};
                    967: 	    }
                    968: 	}
                    969:     }
                    970:     push(@{ $hinthash->{"$part_id.concepts"} },$concept);
                    971:     $hinthash->{"$part_id.concept.$concept"}=
                    972: 	$Apache::response::conceptgroup{'names'};
                    973: 
                    974: }
                    975: 
1.95      albertel  976: sub get_response_param {
                    977:     my ($id,$name,$default)=@_;
                    978:     my $parameter;
1.120     albertel  979:     if ($env{'request.state'} eq 'construct' &&
1.95      albertel  980: 	defined($Apache::inputtags::params{$name})) {
                    981: 	$parameter=$Apache::inputtags::params{$name};
                    982:     } else {
                    983: 	$parameter=&Apache::lonnet::EXT("resource.$id.$name");
                    984:     }
                    985:     if (!defined($parameter) ||	$parameter eq '') {
                    986: 	$parameter = $default;
                    987:     }
                    988:     return $parameter;
                    989: }
1.87      albertel  990: 
1.113     albertel  991: sub submitted {
                    992:     my ($who)=@_;
                    993:     
                    994:     # when scatron grading any submission is a submission
1.120     albertel  995:     if ($env{'form.submitted'} eq 'scantron') { return 1; }
1.113     albertel  996:     # if the caller only cared if this was a scantron submission
                    997:     if ($who eq 'scantron') { return 0; }
                    998:     # if the Submit Answer button for this particular part was pressed
                    999:     my $partid=$Apache::inputtags::part;
1.120     albertel 1000:     if (defined($env{'form.submit_'.$partid})) { return 1; }
1.122     albertel 1001:     # Submit All button on a .page was pressed
                   1002:     if (defined($env{'form.all_submit'})) { return 1; }
1.113     albertel 1003:     # otherwise no submission occured
                   1004:     return 0;
                   1005: }
1.117     albertel 1006: 
1.130     albertel 1007: sub add_to_gradingqueue {
1.149     albertel 1008:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.131     albertel 1009:     if (   $courseid eq ''
                   1010: 	|| $symb eq ''
1.135     albertel 1011: 	|| $env{'request.state'} eq 'construct'
                   1012: 	|| $Apache::lonhomework::type ne 'problem') {
1.131     albertel 1013: 	return;
                   1014:     }
1.130     albertel 1015: 
                   1016:     my %queue_info = ( 'type' => 'problem',
                   1017: 		       'time' => time);
                   1018: 
                   1019:     if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
                   1020: 	$queue_info{'slot'}=
                   1021: 	     $Apache::lonhomework::history{"resource.0.checkedin.slot"};
                   1022:     }
                   1023: 
                   1024:     my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
                   1025:     if ($result ne 'ok') {
                   1026: 	&Apache::lonxml::error("add_to_queue said $result");
                   1027:     }
                   1028: }
                   1029: 
1.117     albertel 1030: # basically undef and 0 (both false) mean that they still have work to do
                   1031: # and all true values mean that they can't do any more work
                   1032: #
                   1033: # a return of undef means it is unattempted
                   1034: # a return of 0 means it is attmpted and wrong but still has tries
                   1035: # a return of 1 means it is marked correct
                   1036: # a return of 2 means they have exceed maximum number of tries
                   1037: # a return of 3 means it after the answer date
                   1038: sub check_status {
                   1039:     my ($id)=@_;
1.143     albertel 1040:     if (!defined($id)) { $id=$Apache::inputtags::part; }
1.117     albertel 1041:     my $curtime=&Apache::lonnet::EXT('system.time');
                   1042:     my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
                   1043:     my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
                   1044:     my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
                   1045:     if ( $opendate && $curtime > $opendate &&
                   1046:          $duedate && $curtime > $duedate &&
                   1047:          $answerdate && $curtime > $answerdate) {
                   1048:         return 3;
                   1049:     }
                   1050:     my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
                   1051:     if ($status =~ /^correct/) { return 1; }
                   1052:     if (!$status) { return undef; }
                   1053:     my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
                   1054:     if ($maxtries eq '') { $maxtries=2; }
                   1055:     my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
                   1056:     if ($curtries < $maxtries) { return 0; }
                   1057:     return 2;
                   1058: }
                   1059: 
1.1       albertel 1060: 1;
                   1061: __END__
1.38      albertel 1062:  

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