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package Reaction::UI::ViewPort::GridView;
use Reaction::Class;
use aliased 'Reaction::InterfaceModel::Collection' => 'IM_Collection';
use aliased 'Reaction::UI::ViewPort::GridView::Entity';
class GridView is 'Reaction::UI::ViewPort', which {
has exclude_fields => ( isa => 'ArrayRef', is => 'ro' );
has field_order => ( isa => 'ArrayRef', is => 'ro', lazy_build => 1);
has field_labels => ( isa => 'HashRef', is => 'ro', lazy_build => 1);
has entities => ( isa => 'ArrayRef', is => 'rw', lazy_build => 1);
has collection => (isa => IM_Collection, is => 'ro', required => 1);
has current_collection => (isa => IM_Collection, is => 'rw', lazy_build => 1);
has entity_class => ( isa => 'Str', is => 'rw', lazy_build => 1);
has entity_args => ( is => 'rw' );
implements BUILD => as {
my ($self, $args) = @_;
my $entity_args = delete $args->{Entity};
$self->entity_args( $entity_args ) if ref $entity_args;
};
after clear_current_collection => sub{
shift->clear_entities; #clear the entitiesis the current collection changes, duh
};
implements _build_entity_class => as { Entity };
implements _build_field_order => as {
my ($self) = @_;
my %excluded = map { $_ => undef }
@{ $self->has_exclude_fields ? $self->exclude_fields : [] };
#XXX this abuse of '_im_class' needs to be fixed ASAP
my $object_class = $self->collection->_im_class;
my @fields = $object_class->meta->parameter_attributes;
#obviously only get fields with readers.
@fields = grep { $_->get_read_method } @fields;
#eliminate excluded fields & treat names that start with an underscore as private
@fields = grep {$_->name !~ /^_/ && !exists $excluded{$_->name} } @fields;
#eliminate fields marked as collections, or fields that are arrayrefs
@fields = 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') }
)
) } @fields;
#order the columns all nice and pretty, and only get fields with readers, duh
my $ordered = $self->sort_by_spec
( $self->column_order, [ map { (($_->name) || ()) } @fields] );
return $ordered;
};
implements _build_current_collection => as {
shift->collection;
};
implements _build_field_labels => as {
my $self = shift;
my %labels;
for my $field ( @{$self->field_order}){
$labels{$field} = join(' ', map{ ucfirst } split('_', $field));
}
return \%labels;
};
implements _build_entities => as {
my ($self) = @_;
my (@entities, $i);
my $args = $self->has_entity_args ? $self->entity_args : {};
my $builders = {};
my $ctx = $self->ctx;
my $loc = $self->location;
my $order = $self->field_order;
my $class = $self->entity_class;
for my $obj ( $self->current_collection->members ) {
my $row = $class->new(
ctx => $ctx,
object => $obj,
location => join('-', $loc, 'row', $i++),
field_order => $order,
builder_cache => $builders,
ref $args ? %$args : ()
);
push(@entities, $row);
}
return \@entities;
};
};
1;
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