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Annotation of loncom/homework/radiobuttonresponse.pm, revision 1.4

1.1       albertel    1: # The LearningOnline Network with CAPA
                      2: # mutliple choice style responses
                      3: 
                      4: # 11/23,11/24,11/28 Gerd Kortemeyer
                      5: 
                      6: package Apache::radiobuttonresponse;
                      7: use strict;
                      8: 
                      9: sub BEGIN {
1.3       albertel   10:   &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
1.1       albertel   11: }
                     12: 
                     13: sub start_radiobuttonresponse {
1.4     ! albertel   14:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
1.3       albertel   15:   #when in a radiobutton response use these
                     16:   &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil'));
1.4     ! albertel   17:   my $id = &Apache::response::start_response($parstack,$safeeval);
        !            18:   return '';
1.1       albertel   19: }
                     20: 
                     21: sub end_radiobuttonresponse {
1.4     ! albertel   22:   &Apache::response::end_response;
        !            23:   return '';
1.1       albertel   24: }
                     25: 
                     26: %Apache::response::foilgroup={};
                     27: sub start_foilgroup {
                     28:   %Apache::response::foilgroup={};
                     29: }
                     30: 
1.4     ! albertel   31: #FIXME needs to stablely do random picks
1.1       albertel   32: sub end_foilgroup {
                     33:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
                     34:   my $name;
                     35:   my $result;
1.3       albertel   36:   my @names = @{ $Apache::response::foilgroup{'names'} };
                     37:   my @truelist;
                     38:   my @falselist;
1.4     ! albertel   39:   my $rndseed=&Apache::lonnet::rndseed();
        !            40:   $rndseed=$rndseed
        !            41:     +&Apache::lonnet::numval($Apache::inputtags::part)
        !            42:       +&Apache::lonnet::numval($Apache::inputtags::response['-1']);
        !            43:   srand($rndseed*10);
1.3       albertel   44:   foreach $name (@names) {
1.2       albertel   45:     $result.="<br><b>$name</b> is <i> $Apache::response::foilgroup{$name.'.value'} </i>";
1.3       albertel   46:     if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                     47:       push (@truelist,$name);
                     48:     } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
                     49:       push (@falselist,$name);
                     50:     } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
                     51:     } else {
                     52:       &Apache::lonxml::error("Unknow state $Apache::response::foilgroup{$name.'.value'} for $name in <foilgroup>");
                     53:     }
1.1       albertel   54:   }
1.4     ! albertel   55:   my $rrargs ='';
        !            56:   if ( $#$parstack > 0 ) { $rrargs=$$parstack['-2']; }
        !            57:   my $max = &Apache::run::run("{$rrargs;".'return $max}',$safeeval);
1.3       albertel   58:   my $whichtrue = rand $#truelist;
1.4     ! albertel   59:   &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
        !            60:   my @whichfalse =();
        !            61:   my $temp=0;
        !            62:   while ((($#whichfalse+2) < $max) && ($#falselist > -1)) {
        !            63:     my $afalse=rand $#falselist;
        !            64:     &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
        !            65:     $afalse=splice(@falselist,$afalse,1);
        !            66:     &Apache::lonxml::debug("Picked $afalse");
        !            67:     push (@whichfalse,$afalse);
        !            68:   }
        !            69:   my $where = rand $max;
        !            70:   splice(@whichfalse,$where,0,$truelist[$whichtrue]);
        !            71:   my $temp;
        !            72:   foreach $temp (@whichfalse) {
        !            73:     $result.='<input type="radio" name="bob">'.$Apache::response::foilgroup{$temp.'.text'}."</input><br />\n";
        !            74:   }
1.1       albertel   75:   return $result;
                     76: }
                     77: 
                     78: sub start_foil {
1.4     ! albertel   79:   &Apache::lonxml::debug("redirection be  $Apache::lonxml::redirection");
        !            80:   $Apache::lonxml::redirection--;
1.1       albertel   81: }
                     82: 
                     83: sub end_foil {
                     84:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
1.3       albertel   85:   if ($target eq 'web' || $target eq 'grade') {
                     86:     my $args ='';
                     87:     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
                     88:     my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);
                     89:     push @{ $Apache::response::foilgroup{'names'} }, $name;
                     90:     my $value = &Apache::run::run("{$args;".'return $value}',$safeeval);
                     91:     $Apache::response::foilgroup{"$name.value"} = $value;
                     92:     $Apache::response::foilgroup{"$name.text"} = $Apache::lonxml::outputstack;
                     93:   }
                     94:   
1.4     ! albertel   95:   $Apache::lonxml::redirection++;
        !            96:   &Apache::lonxml::debug("redirection is  $Apache::lonxml::redirection");
        !            97:   if ($Apache::lonxml::redirection == 1) { 
        !            98:     &Apache::lonxml::debug("reset $Apache::lonxml::outputstack");
        !            99:     $Apache::lonxml::outputstack=''; 
        !           100:   }
1.1       albertel  101:   return '';
                    102: }
                    103: 
                    104: 1;
                    105: __END__
                    106: