Grid->field_labels as rw attr

[catagits/Reaction.git] / lib / Reaction / UI / ViewPort / Collection / Grid.pm

package Reaction::UI::ViewPort::Collection::Grid;

use Reaction::Class;

use aliased 'Reaction::InterfaceModel::Collection' => 'IM_Collection';
use aliased 'Reaction::UI::ViewPort::Collection::Grid::Member';

use namespace::clean -except => [ qw(meta) ];
extends 'Reaction::UI::ViewPort::Collection';



has field_order     => ( is => 'ro', isa => 'ArrayRef', lazy_build => 1);
has excluded_fields => ( is => 'ro', isa => 'ArrayRef', lazy_build => 1);
has _raw_field_labels => (
  is       => 'rw', isa => 'HashRef',
  init_arg => 'field_labels',
);
has field_labels => (
  is         => 'ro', isa => 'HashRef',
  lazy_build => 1, init_arg => undef,
);

has computed_field_order => (is => 'ro', isa => 'ArrayRef', lazy_build => 1);

####################################
sub _build_member_class { Member };
sub _build_field_labels {
  my $self = shift;
  my %labels = %{$self->_raw_field_labels};
  for my $field ( @{$self->computed_field_order}) {
    next if $labels{$field};
    $labels{$field} = join(' ', map{ ucfirst } split('_', $field));
  }
  return \%labels;
};
sub _build_field_order { []; };
sub _build_excluded_fields { []; };
sub _build_computed_field_order {
  my ($self) = @_;
  my %excluded = map { $_ => undef } @{ $self->excluded_fields };
  #treat _$field_name as private and exclude fields with no reader
  my @names = grep { $_ !~ /^_/ && !exists($excluded{$_})} map { $_->name }
    grep {
      !($_->has_type_constraint &&
        ($_->type_constraint->is_a_type_of('ArrayRef') ||
         eval {$_->type_constraint->name->isa('Reaction::InterfaceModel::Collection')} ||
         eval { $_->_isa_metadata->isa('Reaction::InterfaceModel::Collection') }
        )
       )  }
      grep { defined $_->get_read_method }
        $self->current_collection->member_type->parameter_attributes;

  return $self->sort_by_spec($self->field_order, \@names);
};

before _build_members => sub {
  my ($self) = @_;
  $self->member_args->{computed_field_order} ||= $self->computed_field_order;
};

__PACKAGE__->meta->make_immutable;


1;

__END__;

=head1 NAME

Reaction::UI::ViewPort::Collection

=head1 DESCRIPTION

This subclass of L<Reaction::UI::ViewPort::Collection> allows you to display a
homogenous collection of Reaction::InterfaceModel::Objects as a grid.

=head1 ATTRIBUTES

=head2 field_order

=head2 excluded_fields

=head2 field_labels

=head2 computed_field_order

=head1 INTERNAL METHODS

These methods, although stable, are subject to change without notice. These are meant
to be used only by developers. End users should refrain from using these methods to
avoid potential breakages.

=head1 SEE ALSO

L<Reaction::UI::ViewPort::Collection>

=head1 AUTHORS

See L<Reaction::Class> for authors.

=head1 LICENSE

See L<Reaction::Class> for the license.

=cut