/[Frey]/trunk/lib/Frey/Action.pm
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Revision 1161 - (show annotations)
Thu Jul 2 16:53:39 2009 UTC (14 years, 10 months ago) by dpavlin
File size: 10258 byte(s)
added form_header and form_footer callbacks
1 package Frey::Action;
2 use Moose;
3 extends 'Frey::PPI';
4 with 'Frey::Web', 'Frey::Config';
5
6 use Clone qw/clone/;
7 use Data::Dump qw/dump/;
8
9 =head1 DESCRIPTION
10
11 Invoke any L<Frey> object creating html for with various default parameters
12 if not supplied at invocation.
13
14 You can force rendering of fields if you define C<render_attribute> sub with
15 desired rendering as in:
16
17 sub render_pipe { 'radio' }
18
19 =cut
20
21 has 'class' => (
22 is => 'rw',
23 isa => 'Str',
24 required => 1,
25 );
26
27 has 'params' => (
28 is => 'rw',
29 isa => 'HashRef',
30 default => sub { {} },
31 );
32
33 has 'input_step_size' => (
34 documentation => 'Resize input fields by this step',
35 is => 'rw',
36 isa => 'Int',
37 # required => 1,
38 default => 20,
39 );
40
41 =head2 required
42
43 my @required_attributes = $self->required;
44 my $required_attributes = $self->required;
45 my $required_hash = $self->required('as_hash');
46
47 =cut
48
49 sub required {
50 my ($self,$param) = @_;
51 $self->load_class( $self->class );
52
53 my @required =
54 grep {
55 defined $_ && $_->can('name') &&
56 ! defined( $self->params->{ $_->name } ) &&
57 ! $_->is_lazy
58 }
59 map {
60 my $attr = $self->class->meta->get_attribute($_);
61 blessed $attr && $attr->is_required && $attr;
62 } $self->class->meta->get_attribute_list;
63
64 @required = map { $_->name } @required;
65 warn "## required = ",dump( @required ), " for ", $self->class if @required && $self->debug;
66
67 if ( $param eq 'as_hash' ) {
68 my $hash;
69 map { $hash->{$_}++ } @required;
70 return $hash;
71 }
72 return @required if wantarray;
73 return \@required;
74 }
75
76 =head2 attributes
77
78 Generated from attributes specified in code (extracted using L<Frey::PPI>)
79 and required atributes
80
81 my @class_attributes = $self->attributes;
82 my @class_attributes = $self->attributes;
83
84 =cut
85
86 sub attributes {
87 my ( $self ) = @_;
88 my $a;
89 my @attrs = @{ $self->attribute_order };
90 @attrs = map { $a->{$_}++; $_ } @attrs;
91 push @attrs, $_ foreach grep { ! $a->{$_} } @{ $self->required };
92 warn "# attributes = ",dump( @attrs ) if $self->debug;
93 return @attrs if wantarray;
94 return \@attrs;
95 }
96
97 =head2 params_form
98
99 my $html = $self->params_form;
100 my ($html,$default_params) = $self->params_form;
101
102 =cut
103
104 sub form_id {
105 my ($self) = @_;
106 my $form_id = $self->class;
107 $form_id =~ s{\W+}{_}g;
108 return $form_id;
109 }
110
111 sub select_values {
112 my ( $self, $name, $attr_type, $values ) = @_;
113
114 $attr_type ||= '?' and warn "$name doesn't have attr_type";
115
116 my $form_id = $self->form_id;
117 my $max_value_len = 0;
118 my @values;
119 my $display;
120 my $html = '';
121
122 foreach ( @$values ) {
123 my $v = ref($_) eq 'HASH' ? $_->{$name} : $_;
124 if ( $v =~ s/\t+(.+)$// ) {
125 $display->{$v} = $1;
126 }
127 warn "## value '$v'";
128 push @values, $v;
129 $max_value_len = length($v) if length($v) > $max_value_len;
130 }
131
132 warn "# max_value_len: $max_value_len";
133 #my $render = eval $class . '->render_' . $name;
134 my $call = 'render_' . $name;
135 my $render = $self->class->$call if $self->class->can($call);
136 warn "## render $@";
137
138 if ( $#values > 3 && $render !~ m{radio} ) {
139 my $options = join("\n",
140 map {
141 my $d = $display->{$_} || $_;
142 qq|<option value="$_">$d</option>|;
143 } @values
144 );
145 # onchange="alert(this.options[this.selectedIndex].value);"
146 $html = qq|
147 <select title="$attr_type" name="$name">
148 $options
149 </select>
150 | if $options;
151 } else {
152 my $delimiter = $max_value_len > $self->input_step_size ? qq|<br>| : '';
153 my $radio =
154 # $delimiter .
155 join("\n",
156 map { strip(qq|
157 <span title="$attr_type">
158 <input type="radio" name="$name" value="$_">
159 $_
160 </span>
161 $delimiter
162 |) } @values
163 );
164 if ( $radio ) {
165
166 my $size = int( $max_value_len / $self->input_step_size ) + 1;
167 $size = 5 if $size > 5;
168 $size *= $self->input_step_size;
169 $radio .= qq|
170 <span>
171 <input type="radio" name="$name" value=" " onclick="document.getElementById('new-$name').focus();" >
172 <input type="text" name="new-$name" id="new-$name" onchange="clear_radio('$form_id','$name'); this.disable = false;" onblur="this.disable = true;" title="enter new value" size="$size">
173 </span>
174 |;
175 }
176 $html = qq|<div style="display: block;">$radio</div>|;
177 }
178
179 return $html;
180 }
181
182 sub params_form {
183 my ( $self ) = @_;
184
185 foreach my $checkbox ( split(/\s+/, $self->params->{'frey-checkboxes'} ) ) {
186 next if defined $self->params->{ $checkbox };
187
188 $self->params->{ $checkbox } = 0;
189 warn "# checkbox $checkbox not ticked";
190 }
191
192 my $required = $self->required('as_hash');
193 if ( $required ) {
194 warn $self->class, " required params ", dump( keys %$required ) if $self->debug;
195 } else {
196 warn "all params available ", dump( $self->params ), " not creating form" if $self->debug;
197 return (undef,$self->params) if wantarray;
198 return;
199 }
200
201 my $class = $self->class;
202
203 $self->load_class( $class );
204
205 my $default = clone $self->params; # XXX we really don't want to modify params!
206
207 my $params_config = {};
208 $params_config = $self->config($class);
209 warn "# $class config = ",dump( $params_config ) if $self->debug;
210
211 my $form;
212 my $form_id = $self->form_id;
213
214 my @checkboxes;
215
216 my $label_width = 1; # minimum
217
218 my @fields =
219 grep {
220 die "$_ doesn't have meta" unless $class->can('meta');
221 ! $class->meta->get_attribute($_)->is_lazy
222 # && ! defined $default->{$_} # XXX show fields with values
223 && ! m{^_} # skip _private
224 } $self->attributes;
225
226 my $fieldset;
227
228 my $last;
229 foreach my $name ( @fields ) {
230 my $set = $name;
231 $set =~ s{_[^_]+$}{};
232 push @{ $fieldset->{$set} }, $name;
233 }
234
235 delete( $fieldset->{$_} )
236 foreach ( grep { $#{ $fieldset->{$_} } == 0 } keys %$fieldset );
237
238 warn "# fieldset = ",dump( $fieldset );
239
240 foreach my $name ( @fields ) {
241 my $attr_type = '';
242 my $type = $name =~ m/^pass/ ? 'password' : 'text';
243 my $label = $name;
244 my $label_title = '';
245 my $value_html = '';
246
247 my $attr = $class->meta->get_attribute( $name );
248 $attr_type = $attr->type_constraint->name if $attr->has_type_constraint;
249
250 my $value =
251 defined $default->{$name} ? $default->{$name} :
252 $attr->has_default ? $attr->default( $name ) :
253 undef;
254
255 if ( ref($params_config) eq 'HASH' && defined $params_config->{$name} ) {
256 $value = $params_config->{$name};
257 } elsif ( ref($params_config) eq 'ARRAY' ) {
258 $value_html = $self->select_values( $name, $attr_type, $params_config );
259 $default->{$name} = $params_config->[0]->{$name};
260 } elsif ( $attr->has_type_constraint && $attr->type_constraint->can('values') ) {
261 $value_html = $self->select_values( $name, $attr_type, $attr->type_constraint->values );
262 } elsif ( $class->can( $name . '_available' ) ) {
263 my $available = $name . '_available';
264 $available = $class->$available;
265 confess $@ if $@;
266 $available =~ s/^\s+//gs;
267 $available =~ s/\s+$//gs;
268 $value_html = $self->select_values( $name, $attr_type, [ split(/\n/,$available) ]);
269 } elsif ( $attr_type =~ m{^Bool} ) {
270 my $suffix = '';
271 $suffix = ' checked=1' if $value;
272 $value_html = qq|<input type="checkbox" name="$name" title="$attr_type" value=1$suffix>|;
273 push @checkboxes, $name;
274 } elsif ( ! defined $value && ! $required->{$name} ) {
275 $value_html = qq|<tt id="$name">undef</tt><!-- $name = undef -->|; # FIXME if $self->debug
276 } elsif ( $attr_type !~ m{^(Str|Int|Email)$} || $value =~ $Frey::Web::re_html || $name =~ m{text} ) {
277 $value_html = qq|<textarea name="$name" title="$attr_type">$value</textarea>|;
278 }
279
280 $label_title = qq| title="| . $attr->documentation . qq|"| if $attr->has_documentation;
281
282 $default->{$name} = $value unless defined $default->{$name};
283
284 my $size = ( int( length($value) / $self->input_step_size ) + 1 ) * $self->input_step_size;
285 $value_html = qq|<input type="$type" name="$name" title="$attr_type" value="$value" size="$size">| unless $value_html;
286
287 # warn "# required $name ", $class->meta->get_attribute( $name )->dump( 2 );
288
289 if ( $required->{$name} ) {
290 $label_title .= qq| class="required"|;
291 $value_html =~ s{(<\S+)\s}{$1 class=required };
292 }
293
294 my $set = $name;
295 $set =~ s{_[^_]+$}{};
296
297 my ( $before, $after ) = ( '', '<br>' );
298
299 if ( my $s = $fieldset->{$set} ) {
300 if ($s->[0] eq $name) {
301 $before = qq|
302 <fieldset>
303 <legend>$set</legend>
304 |;
305 } elsif ( $s->[ -1 ] eq $name ) {
306 $after = qq|
307 </fieldset>
308 |;
309 }
310 $label =~ s{^\Q$set\E_+}{};
311 }
312
313 $label = $self->_label( $label );
314 $form .= qq|$before<label for="$name"$label_title>$label</label>$value_html $after|;
315 my $ll = length($label);
316 $label_width = $ll if $ll > $label_width;
317 }
318 $form .= qq|<input type="hidden" name="frey-checkboxes" value="| . join(' ', @checkboxes) . qq|">| if @checkboxes;
319
320 $label_width += 2; # XXX padding left+right em
321
322 $self->add_js('static/Frey/Action.js');
323
324 $self->add_css(qq|
325 label,input {
326 display: block;
327 float: left;
328 margin-bottom: 10px;
329 }
330
331 input:focus {
332 border-color: #cc0;
333 background: #ffc;
334 }
335
336 label {
337 text-align: right;
338 width: ${label_width}ex;
339 padding-right: 1ex;
340 white-space: nowrap;
341 }
342
343 label.required {
344 font-weight: bold;
345 }
346 input.required,
347 select.required {
348 border-color: #c00;
349 }
350
351 br {
352 clear: left;
353 }
354
355 fieldset {
356 margin: 0;
357 padding: 0;
358 margin-bottom: 0.5em;
359 }
360 |);
361
362 my $html;
363
364 # http://www.quirksmode.org/oddsandends/forms.html
365 # $form =~ s{<([^>]+)(name=")([^"]+)(")([^>]*)>}{<$1$2$3$4 id="$3" $5}gs;
366
367 if ( $form ) {
368
369 if ( $self->class->can('form_header') ) {
370 $html = $self->class->form_header;
371 } else {
372 $html = qq|
373 <h1>$class params</h1>
374 |;
375 }
376
377 $html .= qq|
378 <form name="$form_id" id="$form_id" method="post">
379 $form
380 <input type="submit" value="Run $class">
381 </form>
382 |;
383 $html .= $self->class->form_footer if $self->class->can('form_footer');
384 }
385
386 $self->add_status({
387 $self->class => {
388 params => $self->params,
389 params_config => $params_config,
390 default => $default,
391 },
392 });
393
394 return ($html,$default) if wantarray;
395 return $html;
396 }
397
398 sub _label {
399 my ($self,$name) = @_;
400 my $labels = $self->class->form_labels if $self->class->can('form_labels');
401 my $label = $labels->{$name};
402 if ( ! defined $label ) {
403 $label = $name;
404 $label =~ s{_}{ }g;
405 }
406 return $label;
407 }
408
409 =head1 SEE ALSO
410
411 L<http://www.quirksmode.org/css/forms.html> for info on CSS2 forms
412
413 =cut
414
415 __PACKAGE__->meta->make_immutable;
416 no Moose;
417
418 1;

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