package HTML::FormHandler::Widget::Field::HorizCheckboxGroup;
# ABSTRACT: checkbox group field role

use Moose::Role;
use namespace::autoclean;
use HTML::FormHandler::Render::Util ('process_attrs');


sub render {
    my ( $self, $result ) = @_;
    $result ||= $self->result;
    die "No result for form field '" . $self->full_name . "'. Field may be inactive." unless $result;
    my $output = $self->render_element( $result );
    return $self->wrap_field( $result, $output );
}

sub render_element {
    my ( $self, $result ) = @_;
    $result ||= $self->result;


    # loop through options
    my $output = '';
    foreach my $option ( @{ $self->{options} } ) {
        if ( my $label = $option->{group} ) {
            $label = $self->_localize( $label ) if $self->localize_labels;
            my $attr = $option->{attributes} || {};
            my $attr_str = process_attrs($attr);
            my $lattr = $option->{label_attributes} || {};
            my $lattr_str= process_attrs($lattr);
            $output .= qq{\n<div$attr_str><label$lattr_str>$label</label>};
            foreach my $group_opt ( @{ $option->{options} } ) {
                $output .= $self->render_option( $group_opt, $result );
            }
            $output .= qq{\n</div>};
        }
        else {
            $output .= $self->render_option( $option, $result );
        }
    }
    $self->reset_options_index;
    return $output;
}

sub render_option {
    my ( $self, $option, $result ) = @_;
    $result ||= $self->result;

    # get existing values
    my $fif = $result->fif;
    my %fif_lookup;
    @fif_lookup{@$fif} = () if $self->multiple;

    # create option label attributes
    my $lattr = $option->{label_attributes} || {};
    my $lattr_str = process_attrs( $lattr );

    my $id = $self->id . '.' . $self->options_index;

    # start wrapping div
    my $output = qq{<div class="checkbox">};

    $output .= qq{\n<label$lattr_str for="$id">};
    my $value = $option->{value};
    $output .= qq{\n<input type="checkbox"};
    $output .= qq{ value="} . $self->html_filter($value) . '"';
    $output .= qq{ name="} . $self->html_name . '"';
    $output .= qq{ id="$id"};

    # handle option attributes
    my $attr = $option->{attributes} || {};
    if( defined $option->{disabled} && $option->{disabled} ) {
        $attr->{disabled} = 'disabled';
    }
    if ( defined $fif &&
         ( ( $self->multiple && exists $fif_lookup{$value} ) ||
             ( $fif eq $value ) ) ) {
        $attr->{checked} = 'checked';
    }
    $output .= process_attrs($attr);
    $output .= " />\n";

    # handle label
    my $label = $option->{label};
    $label = $self->_localize($label) if $self->localize_labels;
    $output .= $self->html_filter($label);
    $output .= "\n</label>";

    # close wrapping div
    $output .= "\n</div>";

    $self->inc_options_index;
    return $output;
}

1;

__END__

=pod

=encoding UTF-8

=head1 NAME

HTML::FormHandler::Widget::Field::HorizCheckboxGroup - checkbox group field role

=head1 VERSION

version 0.40065

=head1 SYNOPSIS

Checkbox group widget for rendering multiple selects.

Wraps each checkbox in a div.

=head1 AUTHOR

FormHandler Contributors - see HTML::FormHandler

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2016 by Gerda Shank.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

=cut