/[Frey]/trunk/lib/Frey/Action.pm
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Revision 1085 - (show annotations)
Sun Jun 28 14:05:08 2009 UTC (14 years, 10 months ago) by dpavlin
File size: 8711 byte(s)
display undef value only if field is not required
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 You can force rendering of fields if you define C<render_attribute> sub with
16 desired rendering as in:
17
18 sub render_pipe { 'radio' }
19
20 =cut
21
22 has 'class' => (
23 is => 'rw',
24 isa => 'Str',
25 required => 1,
26 );
27
28 has 'params' => (
29 is => 'rw',
30 isa => 'HashRef',
31 default => sub { {} },
32 );
33
34 has 'input_step_size' => (
35 documentation => 'Resize input fields by this step',
36 is => 'rw',
37 isa => 'Int',
38 # required => 1,
39 default => 20,
40 );
41
42 =head2 required
43
44 my @required_attributes = $self->required;
45 my $required_attributes = $self->required;
46 my $required_hash = $self->required('as_hash');
47
48 =cut
49
50 sub required {
51 my ($self,$param) = @_;
52 $self->load_class( $self->class );
53
54 my @required =
55 grep {
56 defined $_ && $_->can('name') &&
57 ! defined( $self->params->{ $_->name } ) &&
58 ! $_->is_lazy
59 }
60 map {
61 my $attr = $self->class->meta->get_attribute($_);
62 blessed $attr && $attr->is_required && $attr;
63 } $self->class->meta->get_attribute_list;
64
65 @required = map { $_->name } @required;
66 warn "## required = ",dump( @required ), " for ", $self->class if @required && $self->debug;
67
68 if ( $param eq 'as_hash' ) {
69 my $hash;
70 map { $hash->{$_}++ } @required;
71 return $hash;
72 }
73 return @required if wantarray;
74 return \@required;
75 }
76
77 =head2 attributes
78
79 Generated from attributes specified in code (extracted using L<Frey::PPI>)
80 and required atributes
81
82 my @class_attributes = $self->attributes;
83 my @class_attributes = $self->attributes;
84
85 =cut
86
87 sub attributes {
88 my ( $self ) = @_;
89 my $a;
90 my @attrs = @{ $self->attribute_order };
91 @attrs = map { $a->{$_}++; $_ } @attrs;
92 push @attrs, $_ foreach grep { ! $a->{$_} } @{ $self->required };
93 warn "# attributes = ",dump( @attrs ) if $self->debug;
94 return @attrs if wantarray;
95 return \@attrs;
96 }
97
98 =head2 params_form
99
100 my $html = $self->params_form;
101 my ($html,$default_params) = $self->params_form;
102
103 =cut
104
105 sub params_form {
106 my ( $self ) = @_;
107
108 foreach my $checkbox ( split(/\s+/, $self->params->{'frey-checkboxes'} ) ) {
109 next if defined $self->params->{ $checkbox };
110
111 $self->params->{ $checkbox } = 0;
112 warn "# checkbox $checkbox not ticked";
113 }
114
115 my $required = $self->required('as_hash');
116 if ( $required ) {
117 warn $self->class, " required params ", dump( keys %$required ) if $self->debug;
118 } else {
119 warn "all params available ", dump( $self->params ), " not creating form" if $self->debug;
120 return (undef,$self->params) if wantarray;
121 return;
122 }
123
124 my $class = $self->class;
125
126 $self->load_class( $class );
127
128 my $default = clone $self->params; # XXX we really don't want to modify params!
129
130 my $params_config = {};
131 $params_config = $self->config($class);
132 warn "# $class config = ",dump( $params_config ) if $self->debug;
133
134 my $form;
135 my $form_id = $class;
136 $form_id =~ s{\W+}{_}g;
137
138 sub select_values {
139 my ( $name, $attr_type, $values ) = @_;
140
141 $attr_type ||= '?' and warn "$name doesn't have attr_type";
142
143 my $max_value_len = 0;
144 my @values;
145 my $display;
146 my $html = '';
147
148 foreach ( @$values ) {
149 my $v = ref($_) eq 'HASH' ? $_->{$name} : $_;
150 if ( $v =~ s/\t+(.+)$// ) {
151 $display->{$v} = $1;
152 }
153 warn "## value '$v'";
154 push @values, $v;
155 $max_value_len = length($v) if length($v) > $max_value_len;
156 }
157
158 warn "# max_value_len: $max_value_len";
159 my $render = eval $class . '->render_' . $name;
160 warn "## render $@";
161
162 if ( $#values > 3 && $render !~ m{radio} ) {
163 my $options = join("\n",
164 map {
165 my $d = $display->{$_} || $_;
166 qq|<option value="$_">$d</option>|;
167 } @values
168 );
169 # onchange="alert(this.options[this.selectedIndex].value);"
170 $html = qq|
171 <select title="$attr_type" name="$name">
172 $options
173 </select>
174 | if $options;
175 } else {
176 my $delimiter = $max_value_len > $self->input_step_size ? qq|<br>| : '';
177 my $radio =
178 # $delimiter .
179 join("\n",
180 map { strip(qq|
181 <span title="$attr_type">
182 <input type="radio" name="$name" value="$_">
183 $_
184 </span>
185 $delimiter
186 |) } @values
187 );
188 if ( $radio ) {
189
190 my $size = int( $max_value_len / $self->input_step_size ) + 1;
191 $size = 5 if $size > 5;
192 $size *= $self->input_step_size;
193 $radio .= qq|
194 <span>
195 <input type="radio" name="$name" value=" " onclick="document.getElementById('new-$name').focus();" >
196 <input type="text" name="new-$name" id="new-$name" onchange="clear_radio('$form_id','$name'); this.disable = false;" onblur="this.disable = true;" title="enter new value" size="$size">
197 </span>
198 |;
199 }
200 $html = qq|<div style="display: block;">$radio</div>|;
201 }
202
203 return
204 # qq|<input type="text" name="$name">| .
205 $html
206 }
207
208
209 my @checkboxes;
210
211 my $label_width = 1; # minimum
212
213
214 foreach my $name (
215 grep {
216 die "$_ doesn't have meta" unless $class->can('meta');
217 ! $class->meta->get_attribute($_)->is_lazy
218 && ! defined $default->{$_}
219 && ! m{^_} # skip _private
220 } $self->attributes
221 ) {
222 my $attr_type = '';
223 my $type = $name =~ m/^pass/ ? 'password' : 'text';
224 my $label = $name;
225 my $label_title = '';
226 my $value_html = '';
227
228 my $attr = $class->meta->get_attribute( $name );
229 $attr_type = $attr->type_constraint->name if $attr->has_type_constraint;
230
231 my $value =
232 defined $default->{$name} ? $default->{$name} :
233 $attr->has_default ? $attr->default( $name ) :
234 undef;
235
236 if ( ref($params_config) eq 'HASH' && defined $params_config->{$name} ) {
237 $value = $params_config->{$name};
238 } elsif ( ref($params_config) eq 'ARRAY' ) {
239 $value_html = select_values( $name, $attr_type, $params_config );
240 $default->{$name} = $params_config->[0]->{$name};
241 } elsif ( $attr->has_type_constraint && $attr->type_constraint->can('values') ) {
242 $value_html = select_values( $name, $attr_type, $attr->type_constraint->values );
243 } elsif ( $class->can( $name . '_available' ) ) {
244 my $available = eval $class . '->' . $name . '_available';
245 confess $@ if $@;
246 $available =~ s/^\s+//gs;
247 $available =~ s/\s+$//gs;
248 $value_html = select_values( $name, $attr_type, [ split(/\n/,$available) ]);
249 } elsif ( $attr_type =~ m{^Bool} ) {
250 my $suffix = '';
251 $suffix = ' checked=1' if $value;
252 $value_html = qq|<input type="checkbox" name="$name" title="$attr_type" value=1$suffix>|;
253 push @checkboxes, $name;
254 } elsif ( ! defined $value && ! $required->{$name} ) {
255 $value_html = qq|<tt id="$name">undef</tt><!-- $name = undef -->|; # FIXME if $self->debug
256 } elsif ( $attr_type !~ m{^(Str|Int)$} || $value =~ $Frey::Web::re_html || $name =~ m{text} ) {
257 $value_html = qq|<textarea name="$name" title="$attr_type">$value</textarea>|;
258 }
259
260 $label_title = qq| title="| . $attr->documentation . qq|"| if $attr->has_documentation;
261
262 $default->{$name} = $value unless defined $default->{$name};
263
264 my $size = ( int( length($value) / $self->input_step_size ) + 1 ) * $self->input_step_size;
265 $value_html = qq|<input type="$type" name="$name" title="$attr_type" value="$value" size="$size">| unless $value_html;
266
267 # warn "# required $name ", $class->meta->get_attribute( $name )->dump( 2 );
268
269 $label_title .= qq| class="required"| if $required->{$name};
270 $label =~ s/_/ /g;
271
272 $form .= qq|<label for="$name"$label_title>$label</label>$value_html<br>|;
273 my $ll = length($label);
274 $label_width = $ll if $ll > $label_width;
275 }
276 $form .= qq|<input type="hidden" name="frey-checkboxes" value="| . join(' ', @checkboxes) . qq|">| if @checkboxes;
277
278 $label_width += 2; # XXX padding left+right em
279
280 $self->add_js('static/Frey/Action.js');
281
282 $self->add_css(qq|
283 label,input {
284 display: block;
285 float: left;
286 margin-bottom: 10px;
287 }
288
289 input:focus {
290 border-color: #cc0;
291 background: #ffc;
292 }
293
294 label {
295 text-align: right;
296 width: ${label_width}ex;
297 padding-right: 1ex;
298 white-space: nowrap;
299 }
300
301 label.required {
302 font-weight: bold;
303 }
304
305 br {
306 clear: left;
307 }
308 |);
309
310 my $html;
311
312 # http://www.quirksmode.org/oddsandends/forms.html
313 # $form =~ s{<([^>]+)(name=")([^"]+)(")([^>]*)>}{<$1$2$3$4 id="$3" $5}gs;
314
315 $html = qq|
316 <h1>$class params</h1>
317 <form name="$form_id" id="$form_id" method="post">
318 $form
319 <input type="submit" value="Run $class">
320 </form>
321 | if $form;
322
323 $self->add_status({
324 $self->class => {
325 params => $self->params,
326 params_config => $params_config,
327 default => $default,
328 },
329 });
330
331 return ($html,$default) if wantarray;
332 return $html;
333 }
334
335 =head1 SEE ALSO
336
337 L<http://www.quirksmode.org/css/forms.html> for info on CSS2 forms
338
339 =cut
340
341 1;

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