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package Reaction::UI::ViewPort::Field::Role::Mutable;
use Reaction::Role;
use aliased 'Reaction::InterfaceModel::Action';
use aliased 'Reaction::Meta::InterfaceModel::Action::ParameterAttribute';
role Mutable, which {
has model => (is => 'ro', isa => Action, required => 1);
has attribute => (is => 'ro', isa => ParameterAttribute, required => 1);
has value => (is => 'rw', lazy_build => 1, trigger_adopt('value'));
has needs_sync => (is => 'rw', isa => 'Int', default => 0);
has message => (is => 'rw', isa => 'Str');
implements adopt_value => as {
my ($self) = @_;
$self->needs_sync(1); # if $self->has_attribute;
};
implements sync_to_action => as {
my ($self) = @_;
return unless $self->needs_sync && $self->has_value;
my $attr = $self->attribute;
if (my $tc = $attr->type_constraint) {
my $value = $self->value;
$value = $tc->coercion->coerce($value) if ($tc->has_coercion);
my $error = $tc->validate($self->value); # should we be checking against $value?
if (defined $error) {
$self->message($error);
return;
}
}
my $writer = $attr->get_write_method;
confess "No writer for attribute" unless defined($writer);
$self->action->$writer($self->value); #should we be passing $value ?
$self->needs_sync(0);
};
implements sync_from_action => as {
my ($self) = @_;
return unless !$self->needs_sync; # && $self->has_attribute;
$self->message($self->action->error_for($self->attribute) || '');
};
around accept_events => sub { ('value', shift->(@_)) };
};
1;
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