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1 | package Reaction::UI::ViewPort::Object; |
2 | |
3 | use Reaction::Class; |
4 | |
5 | use aliased 'Reaction::UI::ViewPort::Field::Text'; |
6 | use aliased 'Reaction::UI::ViewPort::Field::Number'; |
7 | use aliased 'Reaction::UI::ViewPort::Field::Integer'; |
8 | use aliased 'Reaction::UI::ViewPort::Field::Boolean'; |
9 | use aliased 'Reaction::UI::ViewPort::Field::String'; |
10 | use aliased 'Reaction::UI::ViewPort::Field::DateTime'; |
11 | use aliased 'Reaction::UI::ViewPort::Field::RelatedObject'; |
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12 | use aliased 'Reaction::UI::ViewPort::Field::Array'; |
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13 | use aliased 'Reaction::UI::ViewPort::Field::Collection'; |
14 | |
15 | use aliased 'Reaction::InterfaceModel::Object' => 'IM_Object'; |
16 | |
17 | class Object is 'Reaction::UI::ViewPort', which { |
18 | |
19 | #everything is read only right now. Later I can make somethings read-write |
20 | #but first I need to figure out what depends on what so we can have decent triggers |
21 | has model => (is => 'ro', isa => IM_Object, required => 1); |
22 | has fields => (is => 'ro', isa => 'ArrayRef', lazy_build => 1); |
23 | |
24 | has field_args => (is => 'ro'); |
25 | has field_order => (is => 'ro', isa => 'ArrayRef'); |
26 | |
27 | has builder_cache => (is => 'ro', isa => 'HashRef', lazy_build => 1); |
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28 | has excluded_fields => (is => 'ro', isa => 'ArrayRef', lazy_build => 1); |
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29 | has computed_field_order => (is => 'ro', isa => 'ArrayRef', lazy_build => 1); |
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30 | |
31 | implements BUILD => as { |
32 | my ($self, $args) = @_; |
33 | my $field_args = delete $args->{Field}; |
34 | $self->field_args( $field_args ) if ref $field_args; |
35 | }; |
36 | |
37 | implements _build_excluded_fields => as { [] }; |
38 | implements _build_builder_cache => as { {} }; |
39 | |
40 | implements _build_fields => as { |
41 | my ($self) = @_; |
42 | my $obj = $self->model; |
43 | my $args = $self->has_field_args ? $self->field_args : {}; |
44 | my @fields; |
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45 | for my $field_name (@{ $self->computed_field_order }) { |
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46 | my $attr = $obj->meta->find_attribute_by_name($field_name); |
47 | my $meth = $self->builder_cache->{$field_name} ||= $self->get_builder_for($attr); |
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48 | my $field = $self->$meth($attr, ($args->{$field_name} || {})); |
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49 | push(@fields, $field) if $field; |
50 | } |
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51 | return \@fields; |
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52 | }; |
53 | |
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54 | implements _build_computed_field_order => as { |
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55 | my ($self) = @_; |
56 | my %excluded = map { $_ => undef } @{ $self->excluded_fields }; |
57 | #treat _$field_name as private and exclude fields with no reader |
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58 | my @names = grep { $_ !~ /^_/ && !exists($excluded{$_})} map { $_->name } |
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59 | grep { defined $_->get_read_method } $self->model->meta->parameter_attributes; |
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60 | return $self->sort_by_spec($self->field_order || [], \@names); |
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61 | }; |
62 | |
63 | override child_event_sinks => sub { |
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64 | return ( @{shift->fields}, super()); |
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65 | }; |
66 | |
67 | #candidate for shared role! |
68 | implements get_builder_for => as { |
69 | my ($self, $attr) = @_; |
70 | my $attr_name = $attr->name; |
71 | my $builder = "_build_fields_for_name_${attr_name}"; |
72 | return $builder if $self->can($builder); |
73 | if ($attr->has_type_constraint) { |
74 | my $constraint = $attr->type_constraint; |
75 | my $base_name = $constraint->name; |
76 | my $tried_isa = 0; |
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77 | my @tried; |
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78 | CONSTRAINT: while (defined($constraint)) { |
79 | my $name = $constraint->name; |
80 | $name = $attr->_isa_metadata if($name eq '__ANON__'); |
81 | if (eval { $name->can('meta') } && !$tried_isa++) { |
82 | foreach my $class ($name->meta->class_precedence_list) { |
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83 | push(@tried, $class); |
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84 | my $mangled_name = $class; |
85 | $mangled_name =~ s/:+/_/g; |
86 | my $builder = "_build_fields_for_type_${mangled_name}"; |
87 | return $builder if $self->can($builder); |
88 | } |
89 | } |
90 | if (defined($name)) { |
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91 | push(@tried, $name); |
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92 | unless (defined($base_name)) { |
93 | $base_name = "(anon subtype of ${name})"; |
94 | } |
95 | my $mangled_name = $name; |
96 | $mangled_name =~ s/:+/_/g; |
97 | my $builder = "_build_fields_for_type_${mangled_name}"; |
98 | return $builder if $self->can($builder); |
99 | } |
100 | $constraint = $constraint->parent; |
101 | } |
102 | if (!defined($constraint)) { |
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103 | confess "Can't build field ${attr_name} of type ${base_name} without " |
104 | ."$builder method or _build_fields_for_type_<type> method " |
105 | ."for type or any supertype (tried ".join(', ', @tried).")"; |
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106 | } |
107 | } else { |
108 | confess "Can't build field ${attr} without $builder method or type constraint"; |
109 | } |
110 | }; |
111 | |
112 | implements _build_simple_field => as { |
113 | my ($self, %args) = @_; |
114 | my $class = delete $args{class}; |
115 | confess("Can not build simple field without a viewport class") |
116 | unless $class; |
117 | confess("Can not build simple field without attribute") |
118 | unless defined $args{attribute}; |
119 | |
120 | my $field_name = $args{attribute}->name; |
121 | return $class->new( |
122 | ctx => $self->ctx, |
123 | model => $self->model, |
124 | location => join('-', $self->location, 'field', $field_name), |
125 | %args |
126 | ); |
127 | }; |
128 | |
129 | implements _build_fields_for_type_Num => as { |
130 | my ($self, $attr, $args) = @_; |
131 | $self->_build_simple_field(attribute => $attr, class => Number, %$args); |
132 | }; |
133 | |
134 | implements _build_fields_for_type_Int => as { |
135 | my ($self, $attr, $args) = @_; |
136 | #XXX |
137 | $self->_build_simple_field(attribute => $attr, class => Integer, %$args); |
138 | }; |
139 | |
140 | implements _build_fields_for_type_Bool => as { |
141 | my ($self, $attr, $args) = @_; |
142 | $self->_build_simple_field(attribute => $attr, class => Boolean, %$args); |
143 | }; |
144 | |
145 | #XXX |
146 | implements _build_fields_for_type_Password => as { return }; |
147 | |
148 | implements _build_fields_for_type_Str => as { |
149 | my ($self, $attr, $args) = @_; |
150 | #XXX |
151 | $self->_build_simple_field(attribute => $attr, class => String, %$args); |
152 | }; |
153 | |
154 | implements _build_fields_for_type_SimpleStr => as { |
155 | my ($self, $attr, $args) = @_; |
156 | $self->_build_simple_field(attribute => $attr, class => String, %$args); |
157 | }; |
158 | |
159 | implements _build_fields_for_type_DateTime => as { |
160 | my ($self, $attr, $args) = @_; |
161 | $self->_build_simple_field(attribute => $attr, class => DateTime, %$args); |
162 | }; |
163 | |
164 | implements _build_fields_for_type_Enum => as { |
165 | my ($self, $attr, $args) = @_; |
166 | #XXX |
167 | $self->_build_simple_field(attribute => $attr, class => String, %$args); |
168 | }; |
169 | |
170 | implements _build_fields_for_type_ArrayRef => as { |
171 | my ($self, $attr, $args) = @_; |
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172 | $self->_build_simple_field(attribute => $attr, class => Array, %$args); |
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173 | }; |
174 | |
175 | implements _build_fields_for_type_Reaction_InterfaceModel_Object => as { |
176 | my ($self, $attr, $args) = @_; |
177 | #XXX |
178 | $self->_build_simple_field(attribute => $attr, class => RelatedObject, %$args); |
179 | }; |
180 | |
181 | implements _build_fields_for_type_Reaction_InterfaceModel_Collection => as { |
182 | my ($self, $attr, $args) = @_; |
183 | $self->_build_simple_field(attribute => $attr, class => Collection, %$args); |
184 | }; |
185 | |
186 | }; |
187 | |
188 | 1; |
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189 | |
190 | __END__; |
191 | |
192 | =head1 NAME |
193 | |
194 | Reaction::UI::ViewPort::Object |
195 | |
196 | =head1 DESCRIPTION |
197 | |
198 | =head1 ATTRIBUTES |
199 | |
200 | =head2 model |
201 | |
202 | =head2 fields |
203 | |
204 | =head2 field_args |
205 | |
206 | =head2 field_order |
207 | |
208 | =head2 builder_cache |
209 | |
210 | =head2 excluded_fields |
211 | |
212 | =head2 computed_field_order |
213 | |
214 | =head1 INTERNAL METHODS |
215 | |
216 | These methods, although stable, are subject to change without notice. These are meant |
217 | to be used only by developers. End users should refrain from using these methods to |
218 | avoid potential breakages. |
219 | |
220 | =head2 BUILD |
221 | |
222 | =head2 get_builder_for |
223 | |
224 | =head2 _build_simple_field |
225 | |
226 | =head2 _build_fields_for_type_Num |
227 | |
228 | =head2 _build_fields_for_type_Int |
229 | |
230 | =head2 _build_fields_for_type_Bool |
231 | |
232 | =head2 _build_fields_for_type_Password |
233 | |
234 | =head2 _build_fields_for_type_Str |
235 | |
236 | =head2 _build_fields_for_type_SimpleStr |
237 | |
238 | =head2 _build_fields_for_type_DateTime |
239 | |
240 | =head2 _build_fields_for_type_Enum |
241 | |
242 | =head2 _build_fields_for_type_ArrayRef |
243 | |
244 | =head2 _build_fields_for_type_Reaction_InterfaceModel_Object |
245 | |
246 | =head2 _build_fields_for_type_Reaction_InterfaceModel_Collection |
247 | |
248 | =head1 AUTHORS |
249 | |
250 | See L<Reaction::Class> for authors. |
251 | |
252 | =head1 LICENSE |
253 | |
254 | See L<Reaction::Class> for the license. |
255 | |
256 | =cut |