Re: radio inputs and disabled method

Joao Lopes <developer@xxxxxxxxxxxxxxxx> writes:

> Hi, I modified Form.pm overriding method "disabled" in subclass
> "HTML::Form::ListInput" (and form.t) and it seems to work as I would
> expect.
> Do you think attached patch is a good approach?

Looks basically good.  I modified into this one to make it do the
right thing for select/option stuff as well.  Thanks! To appear in
LWP-5.805.

Regards,
Gisle


Index: lib/HTML/Form.pm
===================================================================
RCS file: /cvsroot/libwww-perl/lwp5/lib/HTML/Form.pm,v
retrieving revision 1.53
retrieving revision 1.54
diff -u -p -r1.53 -r1.54
--- lib/HTML/Form.pm    7 Dec 2005 09:33:34 -0000       1.53
+++ lib/HTML/Form.pm    7 Dec 2005 14:32:27 -0000       1.54
@@ -1,13 +1,13 @@
 package HTML::Form;
 
-# $Id: Form.pm,v 1.53 2005/12/07 09:33:34 gisle Exp $
+# $Id: Form.pm,v 1.54 2005/12/07 14:32:27 gisle Exp $
 
 use strict;
 use URI;
 use Carp ();
 
 use vars qw($VERSION);
-$VERSION = sprintf("%d.%03d", q$Revision: 1.53 $ =~ /(\d+)\.(\d+)/);
+$VERSION = sprintf("%d.%03d", q$Revision: 1.54 $ =~ /(\d+)\.(\d+)/);
 
 my %form_tags = map {$_ => 1} qw(input textarea button select option);
 
@@ -1035,13 +1035,13 @@ sub add_to_form
        if $type eq "checkbox";
 
     if ($type eq "option" && exists $self->{multiple}) {
-       $self->{disabled} ||= $self->{option_disabled};
+       $self->{disabled} ||= delete $self->{option_disabled};
        return $self->SUPER::add_to_form($form);
     }
 
     die "Assert" if @{$self->{menu}} != 1;
     my $m = $self->{menu}[0];
-    $m->{disabled}++ if $self->{option_disabled};
+    $m->{disabled}++ if delete $self->{option_disabled};
 
     my $prev = $form->find_input($self->{name}, $self->{type});
     return $self->SUPER::add_to_form($form) unless $prev;
@@ -1060,6 +1060,29 @@ sub fixup
     $self->{menu}[$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;



> 
> > For radio inputs, disabled method is always returning false (meaning
> > "enabled"), even if all radio inputs are disabled.
> > I think it should return something like: false if at least one radio
> > with same name is not disabled...; true otherwise.
> >
> > Also when we try to enable the radio, and then modify the
> > input->value, we don't succeed.
> > I think it would be better if the method input->disabled(...) would
> > enable/disable all radio buttons whithin the input..
> >
> > I'm using libwww-perl-5.803...
> >
> > Sample code:
> >
> >    use HTML::Form;
> >
> >    my $f = HTML::Form->parse(<<EOT, "http://www.example.com";);
> >    <form>
> >    <input type=radio name=r0 value=1 disabled>one
> >    <input type=radio name=r0 value=2 disabled>two
> >    </form>
> >    EOT
> >    # here we see radio as not disabled
> >    print $f->dump;
> >    # try to enable it
> >    $f->find_input("r0")->disabled(0);
> >    # then we get the exception: The value '1' has been disabled for
> >    field 'r0' at
> >    $f->value("r0", 1);
> >
> >
> > Has anyone had similar feeling/experience or am I missing something ?