Commit | Line | Data |
ddccc6a2 |
1 | package Reaction::UI::ViewPort::Field::Role::Mutable; |
2 | |
c8fbb8ad |
3 | use Reaction::Role; |
4 | |
ddccc6a2 |
5 | use aliased 'Reaction::InterfaceModel::Action'; |
6 | use aliased 'Reaction::Meta::InterfaceModel::Action::ParameterAttribute'; |
7 | |
81393881 |
8 | use namespace::clean -except => [ qw(meta) ]; |
9 | |
10 | has model => (is => 'ro', isa => Action, required => 1); |
11 | has attribute => (is => 'ro', isa => ParameterAttribute, required => 1); |
12 | |
13 | has value => ( |
14 | is => 'rw', lazy_build => 1, trigger_adopt('value'), |
15 | clearer => 'clear_value', |
16 | ); |
17 | has needs_sync => (is => 'rw', isa => 'Int', default => 0); |
18 | #predicates are autmagically generated for lazy and non-required attrs |
19 | has message => (is => 'rw', isa => 'Str', clearer => 'clear_message'); |
20 | |
21 | after clear_value => sub { |
22 | my $self = shift; |
23 | $self->clear_message if $self->has_message; |
24 | $self->needs_sync(1); |
25 | }; |
26 | sub adopt_value { |
27 | my ($self) = @_; |
28 | $self->clear_message if $self->has_message; |
29 | $self->needs_sync(1); # if $self->has_attribute; |
30 | }; |
31 | sub can_sync_to_action { |
32 | my $self = shift; |
33 | return 1 unless $self->needs_sync; |
34 | my $attr = $self->attribute; |
35 | |
36 | if ($self->has_value) { |
37 | my $value = $self->value; |
38 | if (my $tc = $attr->type_constraint) { |
39 | $value = $tc->coercion->coerce($value) if ($tc->has_coercion); |
40 | if (defined (my $error = $tc->validate($value))) { |
41 | $self->message($error); |
42 | return; |
f25cb331 |
43 | } |
5ea9eefd |
44 | } |
81393881 |
45 | } else { |
46 | return if $attr->is_required; |
47 | } |
48 | return 1; |
49 | }; |
50 | sub sync_to_action { |
51 | my ($self) = @_; |
52 | return unless $self->needs_sync; |
53 | return unless $self->can_sync_to_action; |
54 | |
55 | my $attr = $self->attribute; |
56 | |
57 | if ($self->has_value) { |
58 | my $value = $self->value; |
59 | if (my $tc = $attr->type_constraint) { |
60 | #this will go away when we have moose dbic. until then though... |
61 | $value = $tc->coercion->coerce($value) if ($tc->has_coercion); |
ddccc6a2 |
62 | } |
81393881 |
63 | my $writer = $attr->get_write_method; |
64 | confess "No writer for attribute" unless defined($writer); |
65 | $self->model->$writer($value); |
66 | } else { |
67 | my $predicate = $attr->get_predicate_method; |
68 | confess "No predicate for attribute" unless defined($predicate); |
69 | if ($self->model->$predicate) { |
70 | my $clearer = $attr->get_clearer_method; |
71 | confess "${predicate} returned true but no clearer for attribute" |
72 | unless defined($clearer); |
73 | $self->model->$clearer; |
74 | } |
75 | } |
76 | $self->needs_sync(0); |
77 | }; |
78 | sub sync_from_action { |
79 | my ($self) = @_; |
80 | return unless !$self->needs_sync; # && $self->has_attribute; |
81 | if( !$self->has_message ){ |
82 | if(my $error = $self->model->error_for($self->attribute) ){ |
83 | $self->message( $error ); |
577fe414 |
84 | } |
81393881 |
85 | } |
86 | }; |
87 | |
88 | around accept_events => sub { ('value', shift->(@_)) }; |
ddccc6a2 |
89 | |
ddccc6a2 |
90 | |
c8fbb8ad |
91 | |
92 | 1; |
2dba7201 |
93 | |
94 | =head1 NAME |
95 | |
96 | Reaction::UI::ViewPort::Role::Actions |
97 | |
98 | =head1 DESCRIPTION |
99 | |
100 | A role to ease attaching actions to L<Reaction::InterfaceModel::Object>s |
101 | |
102 | =head1 ATTRIBUTES |
103 | |
104 | =head2 needs_sync |
105 | |
106 | =head2 message |
107 | |
108 | =head2 model |
109 | |
110 | =head2 attribute |
111 | |
112 | =head2 value |
113 | |
114 | =head1 METHODS |
115 | |
116 | =head2 accept_events |
117 | |
118 | =head2 sync_from_action |
119 | |
120 | =head2 sync_to_action |
121 | |
122 | =head2 adopt_value |
123 | |
124 | =head1 AUTHORS |
125 | |
126 | See L<Reaction::Class> for authors. |
127 | |
128 | =head1 LICENSE |
129 | |
130 | See L<Reaction::Class> for the license. |
131 | |
132 | =cut |