HTML::Widget::Constraint::DependOn - DependOn Constraint

HTML-Widget documentation Contained in the HTML-Widget distribution.

Index

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NAME

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HTML::Widget::Constraint::DependOn - DependOn Constraint

SYNOPSIS

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    my $c = $widget->constraint( 'DependOn', 'foo', 'bar' );

DESCRIPTION

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If the first field listed is filled in, all of the others are required.

METHODS

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process

AUTHOR

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Carl Franks, cfranks@cpan.org

LICENSE

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This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself.

HTML-Widget documentation Contained in the HTML-Widget distribution. 
package HTML::Widget::Constraint::DependOn;

use warnings;
use strict;
use base 'HTML::Widget::Constraint';


sub process {
    my ( $self, $w, $params ) = @_;
    my $results = [];
    my @names   = @{ $self->names };
    my $first   = shift @names;

    return [] if !exists $params->{$first};

    for my $name (@names) {
        push @$results,
            HTML::Widget::Error->new(
            { name => $name, message => $self->mk_message } )
            if $self->not ? $params->{$name} : !$params->{$name};
    }

    return $results;
}


1;