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###########################################################################
# Copyright (c) Nate Wiger http://nateware.com. All Rights Reserved.
# Please visit http://formbuilder.org for tutorials, support, and examples.
###########################################################################
# 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()
package CGI::FormBuilder::Field::select;
use strict;
use warnings;
no warnings 'uninitialized';
use CGI::FormBuilder::Util;
use CGI::FormBuilder::Field;
use base 'CGI::FormBuilder::Field';
our $VERSION = '3.09';
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 value for field from select list
# Always assume it's multiple to guarantee we get all values
$jsfunc .= <<EOJS;
// $name: select list, always assume it's multiple to get all values
var $jsfield = null;
var selected_$jsfield = 0;
for (var loop = 0; loop < form.elements['$name'].options.length; loop++) {
if (form.elements['$name'].options[loop].selected) {
$jsfield = form.elements['$name'].options[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
$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";
# First the top-level select
delete $attr->{type}; # type="select" invalid
$self->multiple ? $attr->{multiple} = 'multiple'
: delete $attr->{multiple};
belch "$self->{name}: No options specified for 'select' field" unless @opt;
# Prefix options with "-select-", unless selectname => 0
if ($self->{_form}->smartness && ! $attr->{multiple} # set above
&& $self->selectname ne 0)
{
# Use selectname if => "choose" or messages otherwise
my $name = $self->selectname =~ /\D+/
? $self->selectname
: $self->{_form}{messages}->form_select_default;
unshift @opt, ['', $name]
}
# Special event handling for our _other field
if ($self->other && $self->javascript) {
my $b = $self->othername; # box
# w/o newlines
$attr->{onchange} .= "if (this.selectedIndex + 1 == this.options.length) { "
. "${jspre}other_on('$b') } else { ${jspre}other_off('$b') }";
}
# render <select> tag
$tag .= htmltag('select', $attr) . "\n";
# Stuff for optgroups
my $optgroups = $self->optgroups;
my $lastgroup = '';
my $didgroup = 0;
my $foundit = 0; # found option in list? (for "Other:")
debug 2, "$self->{name}: rendering options: (@opt)";
while (defined(my $opt = shift @opt)) {
# Since our data structure is a series of ['',''] things,
# we get the name from that. If not, then it's a list
# of regular old data that we toname() if nameopts => 1
my($o,$n,$g) = optval($opt);
debug 2, "optval($opt) = ($o,$n,$g)";
# Must use defined() or else labels of "0" are lost
unless (defined($n)) {
$n = $attr->{labels}{$o};
unless (defined($n)) {
$n = $self->nameopts ? toname($o) : $o;
}
}
# If we asked for optgroups => 1, then we add an our
# <optgroup> each time our $lastgroup changes
if ($optgroups) {
if ($g && $g ne $lastgroup) {
# close previous optgroup and start a new one
$tag .= " </optgroup>\n" if $didgroup;
$lastgroup = $g;
if (UNIVERSAL::isa($optgroups, 'HASH')) {
# lookup by name
$g = exists $optgroups->{$g} ? $optgroups->{$g} : $g;
} elsif ($self->nameopts) {
$g = toname($g);
}
$tag .= ' ' . htmltag('optgroup', label => $g) . "\n";
$didgroup++;
} elsif (!$g && $lastgroup) {
# finished an optgroup but next option is not in one
$tag .= " </optgroup>\n" if $didgroup;
$didgroup = 0; # reset counter
}
}
my %slct;
if (ismember($o, @value) ||
(! $foundit && $self->other && @value && ! @opt))
{
debug 2, "$self->{name}: found $o as member of (@value), setting 'selected'";
%slct = (selected => 'selected');
$foundit++;
}
$slct{value} = $o;
debug 2, "$self->{name}: tag .= option $n";
$tag .= ' '
. htmltag('option', %slct)
. ($self->cleanopts ? escapehtml($n) : $n)
. "</option>\n";
}
$tag .= " </optgroup>\n" if $didgroup;
$tag .= ' </select>';
# 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__
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