1 package Reaction::UI::ViewPort::Field::Role::Mutable;
5 use aliased 'Reaction::InterfaceModel::Action';
6 use aliased 'Reaction::Meta::InterfaceModel::Action::ParameterAttribute';
8 use namespace::clean -except => [ qw(meta) ];
10 has model => (is => 'ro', isa => Action, required => 1);
11 has attribute => (is => 'ro', isa => ParameterAttribute, required => 1);
14 is => 'rw', lazy_build => 1, trigger_adopt('value'),
15 clearer => 'clear_value',
17 has needs_sync => (is => 'rw', isa => 'Int', default => 0);
19 has message => (is => 'rw', isa => 'Str', clearer => 'clear_message');
21 after clear_value => sub {
23 $self->clear_message if $self->has_message;
29 $self->clear_message if $self->has_message;
30 $self->needs_sync(1); # if $self->has_attribute;
34 sub can_sync_to_action {
37 # if field is already sync'ed, it can be sync'ed again
38 # this will make sync_to_action no-op if needs_sync is 0
39 return 1 unless $self->needs_sync;
40 my $attr = $self->attribute;
42 if ($self->has_value) {
43 my $value = $self->value;
44 if (my $tc = $attr->type_constraint) {
45 $value = $tc->coercion->coerce($value) if ($tc->has_coercion);
46 if (defined (my $error = $tc->validate($value))) {
47 $self->message($error);
52 if( $self->model->attribute_is_required($attr) ){
53 if(my $error = $self->model->error_for($self->attribute) ){
54 $self->message( $error );
66 # don't sync if we're already synced
67 return unless $self->needs_sync;
69 # if we got here, needs_sync is 1
70 # can_sync_to_action will do coercion checks, etc.
71 return unless $self->can_sync_to_action;
73 my $attr = $self->attribute;
75 if ($self->has_value) {
76 my $value = $self->value;
77 if (my $tc = $attr->type_constraint) {
78 #this will go away when we have moose dbic. until then though...
79 $value = $tc->coercion->coerce($value) if ($tc->has_coercion);
81 my $writer = $attr->get_write_method;
82 confess "No writer for attribute" unless defined($writer);
83 $self->model->$writer($value);
85 my $predicate = $attr->get_predicate_method;
86 confess "No predicate for attribute" unless defined($predicate);
87 if ($self->model->$predicate) {
88 my $clearer = $attr->get_clearer_method;
89 confess "${predicate} returned true but no clearer for attribute"
90 unless defined($clearer);
91 $self->model->$clearer;
96 sub sync_from_action {
98 return if $self->needs_sync;
99 if( !$self->has_message ){
100 if(my $error = $self->model->error_for($self->attribute) ){
101 $self->message( $error );
106 around accept_events => sub { ('value', shift->(@_)) };
114 Reaction::UI::ViewPort::Role::Actions
118 A role to ease attaching actions to L<Reaction::InterfaceModel::Object>s
136 =head2 sync_from_action
138 =head2 sync_to_action
144 See L<Reaction::Class> for authors.
148 See L<Reaction::Class> for the license.