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package Reaction::UI::ViewPort::Field;
use Reaction::Class;
class Field is 'Reaction::UI::ViewPort', which {
has name => (
isa => 'Str', is => 'rw', required => 1
);
has action => (
isa => 'Reaction::InterfaceModel::Action',
is => 'ro', required => 0, predicate => 'has_action',
);
has attribute => (
isa => 'Reaction::Meta::InterfaceModel::Action::ParameterAttribute',
is => 'ro', predicate => 'has_attribute',
);
has value => (
is => 'rw', lazy_build => 1, trigger_adopt('value'),
clearer => 'clear_value',
);
has needs_sync => (
isa => 'Int', is => 'rw', default => 0
);
has label => (isa => 'Str', is => 'rw', lazy_build => 1);
has message => (
isa => 'Str', is => 'rw', required => 1, default => sub { '' }
);
implements BUILD => as {
my ($self) = @_;
if (!$self->has_attribute != !$self->has_action) {
confess "Should have both action and attribute or neither";
}
};
implements _build_label => as {
my ($self) = @_;
my $label = join(' ', map { ucfirst } split('_', $self->name));
# print STDERR "Field " . $self->name . " has label '$label'\n";
return $label;
};
implements _build_value => as {
my ($self) = @_;
if ($self->has_attribute) {
my $reader = $self->attribute->get_read_method;
my $predicate = $self->attribute->predicate;
if (!$predicate || $self->action->$predicate) {
return $self->action->$reader;
}
}
return '';
};
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_attribute && $self->has_value;
my $attr = $self->attribute;
if (my $tc = $attr->type_constraint) {
my $value = $self->value;
if ($tc->has_coercion) {
$value = $tc->coercion->coerce($value);
}
my $error = $tc->validate($self->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);
$self->needs_sync(0);
};
implements sync_from_action => as {
my ($self) = @_;
return unless !$self->needs_sync && $self->has_attribute;
$self->message($self->action->error_for($self->attribute)||'');
};
override accept_events => sub { ('value', super()) };
};
1;
=head1 NAME
Reaction::UI::ViewPort::Field
=head1 DESCRIPTION
This viewport is the base class for all field types.
=head1 ATTRIBUTES
=head2 name
=head2 action
L<Reaction::InterfaceModel::Action>
=head2 attribute
L<Reaction::Meta::InterfaceModel::Action::ParameterAttribute>
=head2 value
=head2 needs_sync
=head2 label
User friendly label, by default is based on the name.
=head2 message
Optional string relating to the field.
=head1 SEE ALSO
=head2 L<Reaction::UI::ViewPort>
=head2 L<Reaction::UI::ViewPort::DisplayField>
=head2 L<Reaction::UI::ViewPort::Field::Boolean>
=head2 L<Reaction::UI::ViewPort::Field::ChooseMany>
=head2 L<Reaction::UI::ViewPort::Field::ChooseOne>
=head2 L<Reaction::UI::ViewPort::Field::DateTime>
=head2 L<Reaction::UI::ViewPort::Field::File>
=head2 L<Reaction::UI::ViewPort::Field::HiddenArray>
=head2 L<Reaction::UI::ViewPort::Field::Number>
=head2 L<Reaction::UI::ViewPort::Field::Password>
=head2 L<Reaction::UI::ViewPort::Field::String>
=head2 L<Reaction::UI::ViewPort::Field::Text>
=head2 L<Reaction::UI::ViewPort::Field::TimeRange>
=head1 AUTHORS
See L<Reaction::Class> for authors.
=head1 LICENSE
See L<Reaction::Class> for the license.
=cut
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