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package HTML::Form::ListInput; use strict; use parent 'HTML::Form::Input'; use Carp 'croak'; our $VERSION = '6.11'; # ABSTRACT: An HTML form list input element for use with HTML::Form #select/option (val1, val2, ....) #input/radio (undef, val1, val2,...) #input/checkbox (undef, value) #select-multiple/option (undef, value) sub new { my $class = shift; my $self = $class->SUPER::new(@_); my $value = delete $self->{value}; my $value_name = delete $self->{value_name}; my $type = $self->{type}; if ( $type eq "checkbox" ) { $value = "on" unless defined $value; $self->{menu} = [ { value => undef, name => "off", }, { value => $value, name => $value_name, }, ]; $self->{current} = ( delete $self->{checked} ) ? 1 : 0; } else { $self->{option_disabled}++ if $type eq "radio" && delete $self->{disabled}; $self->{menu} = [ { value => $value, name => $value_name }, ]; my $checked = $self->{checked} || $self->{option_selected}; delete $self->{checked}; delete $self->{option_selected}; if ( exists $self->{multiple} ) { unshift( @{ $self->{menu} }, { value => undef, name => "off" } ); $self->{current} = $checked ? 1 : 0; } else { $self->{current} = 0 if $checked; } } $self; } sub add_to_form { my ( $self, $form ) = @_; my $type = $self->type; return $self->SUPER::add_to_form($form) if $type eq "checkbox"; if ( $type eq "option" && exists $self->{multiple} ) { $self->{disabled} ||= delete $self->{option_disabled}; return $self->SUPER::add_to_form($form); } Carp::croak "Assert" if @{ $self->{menu} } != 1; my $m = $self->{menu}[0]; $m->{disabled}++ if delete $self->{option_disabled}; # if there was no name we have to search for an input that explicitly has # no name either, because otherwise the name attribute would be ignored my $prev = $form->find_input( $self->{name} || \undef, $self->{type}, $self->{idx} ); return $self->SUPER::add_to_form($form) unless $prev; # merge menus $prev->{current} = @{ $prev->{menu} } if exists $self->{current}; push( @{ $prev->{menu} }, $m ); } sub fixup { my $self = shift; if ( $self->{type} eq "option" && !( exists $self->{current} ) ) { $self->{current} = 0; } $self->{menu}[ $self->{current} ]{seen}++ if exists $self->{current}; } sub disabled { my $self = shift; my $type = $self->type; my $old = $self->{disabled} || _menu_all_disabled( @{ $self->{menu} } ); if (@_) { my $v = shift; $self->{disabled} = $v; for ( @{ $self->{menu} } ) { $_->{disabled} = $v; } } return $old; } sub _menu_all_disabled { for (@_) { return 0 unless $_->{disabled}; } return 1; } sub value { my $self = shift; my $old; $old = $self->{menu}[ $self->{current} ]{value} if exists $self->{current}; $old = $self->{value} if exists $self->{value}; if (@_) { my $i = 0; my $val = shift; my $cur; my $disabled; for ( @{ $self->{menu} } ) { if ( ( defined($val) && defined( $_->{value} ) && $val eq $_->{value} ) || ( !defined($val) && !defined( $_->{value} ) ) ) { $cur = $i; $disabled = $_->{disabled}; last unless $disabled; } $i++; } if ( !( defined $cur ) || $disabled ) { if ( defined $val ) { # try to search among the alternative names as well my $i = 0; my $cur_ignorecase; my $lc_val = lc($val); for ( @{ $self->{menu} } ) { if ( defined $_->{name} ) { if ( $val eq $_->{name} ) { $disabled = $_->{disabled}; $cur = $i; last unless $disabled; } if ( !defined($cur_ignorecase) && $lc_val eq lc( $_->{name} ) ) { $cur_ignorecase = $i; } } $i++; } unless ( defined $cur ) { $cur = $cur_ignorecase; if ( defined $cur ) { $disabled = $self->{menu}[$cur]{disabled}; } elsif ( $self->{strict} ) { my $n = $self->name; Carp::croak("Illegal value '$val' for field '$n'"); } } } elsif ( $self->{strict} ) { my $n = $self->name; Carp::croak("The '$n' field can't be unchecked"); } } if ( $self->{strict} && $disabled ) { my $n = $self->name; Carp::croak("The value '$val' has been disabled for field '$n'"); } if ( defined $cur ) { $self->{current} = $cur; $self->{menu}[$cur]{seen}++; delete $self->{value}; } else { $self->{value} = $val; delete $self->{current}; } } $old; } sub check { my $self = shift; $self->{current} = 1; $self->{menu}[1]{seen}++; } sub possible_values { my $self = shift; map $_->{value}, grep !$_->{disabled}, @{ $self->{menu} }; } sub other_possible_values { my $self = shift; map $_->{value}, grep !$_->{seen} && !$_->{disabled}, @{ $self->{menu} }; } sub value_names { my $self = shift; my @names; for ( @{ $self->{menu} } ) { my $n = $_->{name}; $n = $_->{value} unless defined $n; push( @names, $n ); } @names; } 1; __END__ =pod =encoding UTF-8 =head1 NAME HTML::Form::ListInput - An HTML form list input element for use with HTML::Form =head1 VERSION version 6.11 =head1 AUTHOR Gisle Aas <gisle@activestate.com> =head1 COPYRIGHT AND LICENSE This software is copyright (c) 1998 by Gisle Aas. 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