/[Frey]/trunk/lib/Frey/Action.pm
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Contents of /trunk/lib/Frey/Action.pm

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Revision 731 - (show annotations)
Sat Dec 6 00:25:19 2008 UTC (15 years, 4 months ago) by dpavlin
File size: 6055 byte(s)
implement CSS2 form layout and support for undef (action support is still broken)
1 package Frey::Action;
2 use Moose;
3 extends 'Frey::PPI';
4 with 'Frey::Web';
5 with 'Frey::Config';
6
7 use Clone qw/clone/;
8 use Data::Dump qw/dump/;
9
10 =head1 DESCRIPTION
11
12 Invoke any L<Frey> object creating html for with various default parameters
13 if not supplied at invocation.
14
15 =cut
16
17 has 'class' => (
18 is => 'rw',
19 isa => 'Str',
20 required => 1,
21 );
22
23 has 'params' => (
24 is => 'rw',
25 isa => 'HashRef',
26 default => sub { {} },
27 );
28
29 =head2 required
30
31 my @required_attributes = $self->required;
32 my $required_attributes = $self->required;
33
34 =cut
35
36 sub required {
37 my ( $self ) = @_;
38 $self->load_class( $self->class );
39
40 my @required =
41 grep {
42 defined $_ && $_->can('name') &&
43 ! defined( $self->params->{ $_->name } ) &&
44 ! $_->is_lazy
45 }
46 map {
47 my $attr = $self->class->meta->get_attribute($_);
48 blessed $attr && $attr->is_required && $attr;
49 } $self->class->meta->get_attribute_list;
50
51 warn "## required = ",dump( map { $_->name } @required ), " for ", $self->class if @required && $self->debug;
52 return @required if wantarray;
53 return \@required;
54 }
55
56 =head2 attributes
57
58 Generated from attributes specified in code (extracted using L<Frey::PPI>)
59 and required atributes
60
61 my @class_attributes = $self->attributes;
62 my @class_attributes = $self->attributes;
63
64 =cut
65
66 sub attributes {
67 my ( $self ) = @_;
68 my $a;
69 my @attrs = @{ $self->attribute_order };
70 @attrs = map { $a->{$_}++; $_ } @attrs;
71 push @attrs, $_ foreach grep { ! $a->{$_} } map { $_->name } @{ $self->required };
72 warn "# attributes = ",dump( @attrs ) if $self->debug;
73 return @attrs if wantarray;
74 return \@attrs;
75 }
76
77 =head2 params_form
78
79 my $html = $self->params_form;
80 my ($html,$default_params) = $self->params_form;
81
82 =cut
83
84 sub params_form {
85 my ( $self ) = @_;
86 my @required = $self->required;
87 if ( ! @required ) {
88 warn "all params available ", dump( $self->params ), " not creating form" if $self->debug;
89 return (undef,$self->params) if wantarray;
90 return;
91 } else {
92 warn $self->class, " required params ", map { $_->dump(2) } @required if $self->debug;
93 }
94
95 my $class = $self->class;
96
97 $self->load_class( $class );
98
99 my $default = clone $self->params; # XXX we really don't want to modify params!
100
101 my $params_config = {};
102 $params_config = $self->config($class);
103 warn "# $class config = ",dump( $params_config ) if $self->debug;
104
105 my $form;
106
107 sub select_values {
108 my ( $name, $attr_type, $values ) = @_;
109 my $options = join("\n",
110 map {
111 my $v = ref($_) eq 'HASH' ? $_->{$name} : $_;
112 qq|<option value="$v">$v</option>| if $v;
113 } @$values
114 );
115 qq|<select title="$attr_type" name="$name">$options</select>| if $options;
116 }
117
118 foreach my $checkbox ( split(/\s+/, $default->{'frey-checkboxes'} ) ) {
119 next if defined $default->{ $checkbox };
120
121 $default->{ $checkbox } = 0;
122 $self->params->{ $checkbox } = 0;
123 warn "# checkbox $checkbox not ticked";
124 }
125
126 my @checkboxes;
127
128 my $skip_prefix;
129 if ( $self->class->can('action') ) {
130 my $action = eval $self->class . '->action';
131 $skip_prefix->{$_}++ foreach eval $self->class .'->action_order';
132 warn "# skip_prefix = ", $self->dump( $skip_prefix );
133 }
134
135 my $label_width = 1; # minimum
136
137 foreach my $name (
138 grep {
139 ! $class->meta->get_attribute($_)->is_lazy
140 && ! defined $default->{$_}
141 && ! m{^_} # skip _private
142 } $self->attributes
143 ) {
144 my $attr_type = '';
145 my $type = $name =~ m/^pass/ ? 'password' : 'text';
146 my $label = $name;
147 my $label_title = '';
148 my $value_html = '';
149
150 my $attr = $class->meta->get_attribute( $name );
151 $attr_type = $attr->type_constraint->name if $attr->has_type_constraint;
152
153 my $value =
154 defined $default->{$name} ? $default->{$name} :
155 $attr->has_default ? $attr->default( $name ) :
156 '';
157
158 if ( ref($params_config) eq 'HASH' ) {
159 $value = $params_config->{$name};
160 } elsif ( ref($params_config) eq 'ARRAY' ) {
161 $value_html = select_values( $name, $attr_type, $params_config );
162 $default->{$name} = $params_config->[0]->{$name};
163 } elsif ( $attr->has_type_constraint && $attr->type_constraint->can('values') ) {
164 $value_html = select_values( $name, $attr_type, $attr->type_constraint->values );
165 } elsif ( $attr_type =~ m{^Bool} ) {
166 my $suffix = '';
167 $suffix = ' checked' if $value;
168 $value_html = qq|<input type="checkbox" name="$name" title="$attr_type" value="$value"$suffix>|;
169 push @checkboxes, $name;
170 } elsif ( ! defined $value ) {
171 $value_html = qq|<tt id="$name">undef</tt><!-- $name = undef -->|; # FIXME if $self->debug
172 } elsif ( $attr_type !~ m{^(Str|Int)$} || $value =~ $Frey::Web::re_html ) {
173 $value_html = qq|<textarea name="$name" title="$attr_type">$value</textarea>|;
174 }
175
176 $label_title = qq| title="| . $attr->documentation . qq|"| if $attr->has_documentation;
177
178 $default->{$name} = $value unless defined $default->{$name};
179
180 $value_html = qq|<input type="$type" name="$name" title="$attr_type" value="$value">| unless $value_html;
181
182 # warn "# required $name ", $class->meta->get_attribute( $name )->dump( 2 );
183 $form .= qq|<label for="$name"$label_title>$label</label>$value_html<br>|;
184 my $ll = length($label);
185 $label_width = $ll if $ll > $label_width;
186 }
187 $form .= qq|<input type="hidden" name="frey-checkboxes" value="| . join(' ', @checkboxes) . qq|">| if @checkboxes;
188
189 $self->add_css(qq|
190 label,input {
191 display: block;
192 float: left;
193 margin-bottom: 10px;
194 }
195
196 label {
197 text-align: right;
198 width: ${label_width}ex;
199 padding-right: 20px;
200 }
201
202 br {
203 clear: left;
204 }
205 |);
206
207 my $html;
208
209 $form =~ s{<([^>]+)(name=")([^"]+)(")([^>]*)>}
210 {<$1$2$3$4 id="$3" $5}gs; # http://www.quirksmode.org/oddsandends/forms.html
211
212 $html = qq|
213 <h1>$class params</h1>
214 <form method="post">
215 $form
216 <input type="submit" value="Run $class">
217 </form>
218 | if $form;
219
220 $self->add_status({
221 $self->class => {
222 params => $self->params,
223 params_config => $params_config,
224 default => $default,
225 },
226 });
227
228 return ($html,$default) if wantarray;
229 return $html;
230 }
231
232 =head1 SEE ALSO
233
234 L<http://www.quirksmode.org/css/forms.html> for info on CSS2 forms
235
236 =cut
237
238 1;

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