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package CGI::FormBuilder::Field::radio;
=head1 NAME
CGI::FormBuilder::Field::radio - FormBuilder class for radio fields
=head1 SYNOPSIS
use CGI::FormBuilder::Field;
# delegated straight from FormBuilder
my $f = CGI::FormBuilder::Field->new($form,
name => 'whatever',
type => 'radio');
=cut
use strict;
our $VERSION = '3.03';
use CGI::FormBuilder::Util;
use CGI::FormBuilder::Field;
use base 'CGI::FormBuilder::Field';
# The majority of this module's methods (including new) are
# inherited directly from ::base, since they involve things
# which are common, such as parameter parsing. The only methods
# that are individual to different fields are those that affect
# the rendering, such as script() and tag()
sub script {
my $self = shift;
my $name = $self->name;
# The way script() works is slightly backwards: First the
# type-specific JS DOM code is generated, then this is
# passed as a string to Field->jsfield, which wraps this
# in the generic handling.
# Holders for different parts of JS code
my $jsfunc = '';
my $jsfield = tovar($name);
my $close_brace = '';
my $in = indent(my $idt = 1); # indent
my $alertstr = escapejs($self->jsmessage); # handle embedded '
$alertstr .= '\n';
#
# Get field from radio buttons or checkboxes.
# Must cycle through all again to see which is checked. Yeesh.
#
$jsfunc .= <<EOJS;
// $name: radio group or multiple checkboxes
var $jsfield = null;
var selected_$jsfield = 0;
for (var loop = 0; loop < form.elements['$name'].length; loop++) {
if (form.elements['$name']\[loop].checked) {
$jsfield = form.elements['$name']\[loop].value;
selected_$jsfield++;
EOJS
# Add catch for "other" if applicable
if ($self->other) {
my $oth = $self->othername;
$jsfunc .= <<EOJS;
if ($jsfield == '$oth') $jsfield = form.elements['$oth'].value;
EOJS
}
$close_brace = <<EOJS;
} // if
} // for $name
EOJS
# required?
$close_brace .= <<EOJS if $self->required;
if (! selected_$jsfield) {
alertstr += '$alertstr';
invalid++;
}
EOJS
# indent the very last if/else tests so they're in the for loop
$in = indent($idt += 2);
return $self->jsfield($jsfunc, $close_brace, $in);
}
*render = \&tag;
sub tag {
local $^W = 0; # -w sucks
my $self = shift;
my $attr = $self->attr;
my $jspre = $self->{_form}->jsprefix;
my $tag = '';
my @value = $self->tag_value; # sticky is different in <tag>
my @opt = $self->options;
debug 2, "my(@opt) = \$field->options";
# Add in our "Other:" option if applicable
push @opt, [$self->othername, $self->{_form}{messages}->form_other_default]
if $self->other;
debug 2, "$self->{name}: generating $attr->{type} input type";
my $checkbox_table = 0; # toggle
my $checkbox_col = 0;
if ($self->columns > 0) {
$checkbox_table = 1;
my $c = $self->{_form}->class('_columns');
$tag .= $self->{_form}->table(class => $c) . "\n";
}
belch "$self->{name}: No options specified for 'radio' field" unless @opt;
for my $opt (@opt) {
# Divide up checkboxes in a user-controlled manner
if ($checkbox_table) {
$tag .= " <tr>\n" if $checkbox_col % $self->columns == 0;
$tag .= ' <td>' . $self->{_form}->font;
}
# Since our data structure is a series of ['',''] things,
# we get the name from that. If not, then it's a list
# of regular old data that we toname() if nameopts => 1
my($o,$n) = optval($opt);
# Must use defined() or else labels of "0" are lost
unless (defined($n)) {
$n = $attr->{labels}{$o};
unless (defined($n)) {
$n = $self->nameopts ? toname($o) : $o;
}
}
ismember($o, @value) ? $attr->{checked} = 'checked'
: delete $attr->{checked};
# reset some attrs
$attr->{value} = $o;
if (@opt == 1) {
# single option checkboxes do not modify id
$attr->{id} ||= tovar($attr->{name});
} else {
# all others add the current option name
$attr->{id} = tovar($o eq $self->othername
? "_$attr->{name}" : "$attr->{name}_$o");
}
# Special event handling for our _other field
if ($self->other && $self->javascript) {
my $b = $self->othername; # box
if ($n eq $self->{_form}{messages}->form_other_default) {
# turn on when they click the "_other" field
$attr->{onclick} = "${jspre}other_on('$b')";
} else {
# turn off when they select any, well, others
$attr->{onclick} = "${jspre}other_off('$b')";
}
}
# Each radio/checkbox gets a human thingy with <label> around it
$tag .= htmltag('input', $attr);
$tag .= $checkbox_table ? ("</td>\n <td>".$self->{_form}->font) : ' ';
my $c = $self->{_form}->class('_option');
$tag .= htmltag('label', for => $attr->{id}, class => $c)
. ($self->cleanopts ? escapehtml($n) : $n)
. '</label>';
$tag .= '<br />' if $self->linebreaks;
if ($checkbox_table) {
$checkbox_col++;
$tag .= '</td>';
$tag .= "\n </tr>" if $checkbox_col % $self->columns == 0;
}
$tag .= "\n";
}
$tag .= ' </table>' if $checkbox_table;
# add an additional tag for our _other field
$tag .= ' ' . $self->othertag if $self->other;
debug 2, "$self->{name}: generated tag = $tag";
return $tag; # always return scalar tag
}
1;
__END__
=head1 DESCRIPTION
This module is used to create B<FormBuilder> elements of a specific type.
Currently, each type module inherits all of its methods from the main
L<CGI::FormBuilder::Field> module except for C<tag()> and C<script()>,
which affect the XHMTL representation of the field.
Please refer to L<CGI::FormBuilder::Field> and L<CGI::FormBuilder> for
documentation.
=head1 SEE ALSO
L<CGI::FormBuilder>, L<CGI::FormBuilder::Field>
=head1 REVISION
$Id: radio.pm,v 1.15 2006/02/24 01:42:29 nwiger Exp $
=head1 AUTHOR
Copyright (c) 2005-2006 Nate Wiger <nate@wiger.org>. All Rights Reserved.
This module is free software; you may copy this under the terms of
the GNU General Public License, or the Artistic License, copies of
which should have accompanied your Perl kit.
=cut
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