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package CGI::FormBuilder::Field::text;
=head1 NAME
CGI::FormBuilder::Field::text - FormBuilder class for text fields
=head1 SYNOPSIS
use CGI::FormBuilder::Field;
# delegated straight from FormBuilder
my $f = CGI::FormBuilder::Field->new($form,
name => 'whatever',
type => 'text');
=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 '
$alertstr .= '\n';
if ($self->growable) {
# special handling for growable, have to dynamically
# find out how many have been created
$jsfunc .= <<EOJS;
// $name: growable text or file box
var $jsfield = null;
var entered_$jsfield = 0;
var i = 0;
while (1) {
var growel = document.getElementById('$jsfield'+'_'+i);
if (growel == null) break; // last element
$jsfield = growel.value;
entered_$jsfield++;
i++;
EOJS
$close_brace = <<EOJS;
} // while $name
EOJS
# required?
$close_brace .= <<EOJS if $self->required;
if (! entered_$jsfield) {
alertstr += '$alertstr';
invalid++;
}
EOJS
# indent the very last if/else tests so they're in the while loop
$in = indent($idt += 1);
} else {
# get value from text or other straight input
# at least this part makes some sense
$jsfunc .= <<EOJS;
// $name: standard text, hidden, password, or textarea box
var $jsfield = form.elements['$name'].value;
EOJS
}
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";
# We iterate over each value - this is the only reliable
# way to handle multiple form values of the same name
# (i.e., multiple <input> or <hidden> fields)
@value = (undef) unless @value; # this creates a single-element array
# growable handling
my $count = 0; # for tracking the size of growable fields
my $limit; # for providing (optional) limits to growable fields
my $at_limit; # have we reached the limit of a growable field?
if ($self->growable && $self->growable ne 1) {
$limit = $self->growable;
}
for my $value (@value) {
if ($limit && $count == $limit) {
belch "Number of supplied values (" . @value . ")"
. " for '$attr->{name}' exceeds growable limit $limit - discarding excess";
$at_limit = 1;
last;
}
# setup the value
$attr->{value} = $value; # override
delete $attr->{value} unless defined $value;
if ($self->growable && $self->javascript) {
# the inputs in growable fields need a unique id for fb_grow()
$attr->{id} = tovar("$attr->{name}_$count");
$count++;
}
# render the tag
$tag .= htmltag('input', $attr);
#
# If we have options, lookup the label instead of the true value.
# This code is reached if a field is marked 'static', since
# that is still rendered from ::text (here) but as a 'hidden'
# field. These options would be leftover from a former select
# or radio group that is now shown on a confirm() screen. Got it?
#
for (@opt) {
my($o,$n) = optval($_);
if ($o eq $value) {
$n ||= $attr->{labels}{$o} || ($self->nameopts ? toname($o) : $o);
$value = $n;
last;
}
}
if ($self->growable && $self->javascript) {
# put linebreaks between the input tags in growable fields
# this puts the "Additonal [label]" button on the same line
# as the last input tag
$tag .= '<br />' unless $count == @value;
} else {
$tag .= '<br />' if $self->linebreaks;
}
}
# check to see if we just hit the limit
$at_limit = 1 if $limit && $count == $limit;
# add the "Additional [label]" button
if ($self->growable && $self->javascript) {
$tag .= ' ' . htmltag('input',
id => $self->growname,
type => 'button',
onclick => "${jspre}grow('$attr->{name}')",
value => sprintf($self->{_form}{messages}->form_grow_default, $self->label),
( $at_limit ? ( disabled => 'disabled') : () ),
);
}
# 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: text.pm,v 1.13 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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