#!/usr/bin/perl -w
=head1 NAME
Quizzer::Element::Web::Multiselect - A multi select box on a form
=cut
=head1 DESCRIPTION
This element handles a multi select box on a web form.
=cut
=head1 METHODS
=cut
package Quizzer::Element::Web::Multiselect;
use strict;
use Quizzer::Element;
use vars qw(@ISA);
@ISA=qw(Quizzer::Element);
my $VERSION='0.01';
=head2 show
Generates and returns html representing the multi select box.
=cut
sub show {
my $this=shift;
$_=$this->question->extended_description;
s/\n/\n<br>\n/g;
$_.="\n<p>\n";
# Make a hash of which of the choices are currently selected.
my %value;
map { $value{$_} = 1 } $this->question->value_split;
my $id=$this->id;
$_.="<b>".$this->question->description."</b>\n<select multiple name=\"$id\">\n";
my $c=0;
foreach my $x ($this->question->choices_split) {
if (! $value{$x}) {
$_.="<option value=".$c++.">$x\n";
}
else {
$_.="<option value=".$c++." selected>$x\n";
}
}
$_.="</select>\n";
return $_;
}
=head2 process
This gets called once the user has entered a value. It expects to be passed
all the values they selected. It processes these into the form used internally
and returns that.
=cut
sub process {
my $this=shift;
# This forces the function that provides values to this method
# to be called in scalar context, so we are passed a list of
# the selected values.
my @values=@_;
my @choices=$this->question->choices_split;
my @parsedvalues=map { $choices[$_] } @values;
return join(', ', @parsedvalues);
}
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