server/ext/widget.ext

#! perl # mandatory depends=login

# sends the following ext message types
# ws_a       id name...                        # associate well-known widget with given id
# ws_n       ws                                # widgetset new
# ws_d       ws                                # widgetset destroy
# ws_c       ws id class @args                 # widgetset create
# ws_ct      ws ttype ttext done_cb \%cfg      # widgetset create from template
# w_c        id rid name @args                 # widget method call
# w_s        id @attr                          # widget member set
# w_g        id rid @attr                      # widget member get
#
# and expects the following exti message types
# w_e        id @args                          # widget_call

cf::client->attach (
   on_connect => sub {
      my ($ns) = @_;

      $ns->{id} = "a";
      $ns->{json_coder}->filter_json_single_key_object ("\fw" => sub {
         $ns->{widget}{$_[0]}
      });

      cf::weaken $ns;
   },
);

sub csc_update_stats {
   my ($ns) = @_;

   while (my ($k, $v) = each %{ $ns->{csc}{stat} }) {
      $v->set_text ($ns->pl->ob->stats->$k);
   }
}

my $cg_template = eval <<EOF;
[
   Toplevel => {
      s_id    => "toplevel",
      title   => "Character Creation",
      x       => "center",
      y       => "center",
      z       => 5,
      force_w => 760,
      force_h => 440,
      s_cl => [VBox => { s_cl => [
         Label => {
            text     => "Character Creation",
            fontsize => 1,
            align    => 0,
         },
         Label => {
            markup   => "View or Edit your character attributes below, then press <b>Finish</b> to create your character",
            fontsize => 0.8,
            align    => 0,
         },
         HBox  => { s_cl => [
            Face => {
               s_id  => "face",
               face  => 0,
               bg    => [.2, .2, .2, 1],
               min_w => 64,
               min_h => 64,
            },
            Label => {
               s_id      => "desc",
               fontsize  => 0.8,
               ellipsize => 0,
            },
         ]},
         Notebook => {
            expand => 1,
            s_cl => [
               Table => {
                  c_tab => ["Basics", "Title, background and other information of your character."],
               },
               Table => {
                  c_tab => ["Stats", "Your character's primary stats such as strength, dexterity and so on."],
               },
               Table => {
                  c_tab => ["Race", "Your character's race."],
               },
               Table => {
                  c_tab => ["Class", "Your character's initial class."],
               },
            ],
         },
         Button => {
            s_id => "finish",
            text => "Finish",
         },
      ]}],
   },
]
EOF
die if $@;

sub csc_start {
   my ($ns) = @_;

   my $ws = $ns->{csc} = $ns->new_widgetset;

   my $w = $ws->new (Toplevel =>
      min_w => 600,
      min_h => 400,
      x     => "center",
      y     => "center",
      title => "Character Creation",
      has_close_button => 1,
      on_delete => sub {
         $ws->destroy;
      },
   );

   $w->add (my $ntb = $ws->new (Notebook => expand => 1));

   $ntb->add_tab (Statistics => (my $stats = $ws->new (Table => expand => 1)), "Basic statistics of your new character");

   $stats->add_at (0, 0, (my $statstable = $ws->new ("Table")));

   for (
      [0, "Str"],
      [1, "Dex"],
      [2, "Con"],
      [3, "Int"],
      [4, "Wis"],
      [5, "Pow"],
      [6, "Cha"],
   ) {
      my ($x, $label) = @$_;

      $statstable->add_at ($x, 0, $ws->new (Label =>
         can_hover => 1, can_events => 1,
         align => +1, text => $label, tooltip => "#stat_$label",
      ));
      $statstable->add_at ($x, 1, $ws->{stat}{$label} = $ws->new (Label =>
         can_hover => 1, can_events => 1,
         align => +1, template => "88", tooltip => "#stat_$label",
      ));
   }

   csc_update_stats $ns;

   $ws->{tl} = $w;
   $w->show;

#   my ($tl, $entry) = $ws->template (inline => $cg_template,
#      [
#         toplevel => {},
#         entry    => {
#            text => "xyz",
#            on_changed => sub {
#               warn "changed<@_>\n";#d#
#            },
#         },
#      ],
#   );
#
#   $tl->show;
#
#   $ns->{xxxw} = [$tl, $entry];#d#
#
#   $ws->find ("setup_notebook")->add ($ws->{tab});
#   $ws->find ("setup_dialog")->toggle_visibility;
}

cf::player->attach (
   on_login => sub {
      my ($pl) = @_;

      my $ns = $pl->ns;
      return unless $ns->{can_widget};

      return unless $cf::CFG{devel};

      #csc_start $ns;
   },
);

cf::register_exticmd w_e => sub {
   my ($ns, $id, @args) = @_;

   if (my $cb = $ns->{widget_cb}{$id}) {
      $cb->(@args);
   }

   ()
};

sub cf::client::new_widgetset {
   my ($self) = @_;

   my $id = ++$self->{id};

   my $ws = bless {
      id => $id,
      ns => $self,
      _w => {},
   }, "ext::widget::set";

   cf::weaken $ws->{ns};

   $ws->msg (ws_n => $id);

   $ws
}

sub cf::client::alloc_wid {
   pop @{ $_[0]{ids} }
      or ++$_[0]{id}
}

sub cf::client::free_wid {
   push @{ $_[0]{ids} }, $_[1];
}

#############################################################################

package ext::widget::set;

sub DESTROY {
   $_[0]->destroy;
}

sub destroy {
   my ($self) = @_;

   $self->msg (ws_d => $self->{id});
   delete $self->{ns};
   $_->destroy
      for values %{ $self->{w} };
}

sub msg {
   my ($self, @msg) = @_;

   if (my $ns = shift->{ns}) {
      return unless $ns->{json_coder};#d# might be gone at destroy time(??)
      $ns->send_packet ("ext " . $ns->{json_coder}->encode (\@msg));
   }
}

sub alloc {
   my ($self) = @_;

   my $id = $self->{ns}->alloc_wid;

   my $proxy = bless {
      id => $id,
   }, "ext::widget::proxy";

   cf::weaken ($proxy->{ns} = $self->{ns});
   cf::weaken ($self->{ns}{widget}{$id} = $proxy);

   $proxy
}

sub new {
   my ($self, $class, %args) = @_;

   my $proxy = $self->alloc;

   cf::weaken
      +($self->{_w}{$proxy->{id}} = $proxy),
      +($proxy->{ws} = $self);

   for my $ev (grep /^on_/, keys %args) {
      $args{$ev} = $proxy->{"_$ev"} = $proxy->cb ($args{$ev});
   }

   $self->msg (ws_c =>
      $self->{id},
      $proxy->{id},
      $class,
      \%args,
   );

   $proxy
}

sub template {
   my ($self, $type, $template, $args, $done_cb) = @_;

   my %cfg;

   while (@$args) {
      my ($name, $args) = splice @$args, 0, 2, ();

      my $proxy = $self->alloc;

      $self->{delete $args->{alias} or $name} = $proxy;

      cf::weaken
         +($self->{_w}{$proxy->{id}} = $proxy),
         +($proxy->{ws} = $self);

      for my $ev (grep /^on_/, keys %$args) {
         $args->{$ev} = $proxy->{"_$ev"} = $proxy->cb ($args->{$ev});
      }

      $cfg{$name} = {
         %$args,
         id => $proxy->{id},
      };
   }

   if ($done_cb) {
      my $proxy = $self->alloc;
      my $ocb = $done_cb;
      $done_cb = $proxy->cb (sub {
         undef $proxy;
         undef $done_cb;
         &$ocb
      });
   }

   if ($type eq "face") {
      $self->{ns}->send_face ($template, 100);
      $self->{ns}->flush_fx;
   }

   $self->msg (ws_ct =>
      $self->{id},
      $type => $template,
      $done_cb,
      \%cfg,
   );
}

sub find {
   my ($self, @names) = @_;

   my @res;
   my @alloc;

   for my $name (@names) {
      push @res, $self->{ns}{widget_wkw}{$name} ||= do {
         my $proxy = $self->alloc;

         push @alloc, $proxy->{id} => $name;

         $proxy
      };
   }

   $self->msg (ws_a => @alloc)
      if @alloc;

   wantarray ? @res : $res[0]
}

#############################################################################

package ext::widget::proxy;

sub msg {
   my ($self, $type, @arg) = @_;

   if (my $ns = $self->{ns}) {
      my @msg = ($type, $self->{id}, @arg);
      $ns->send_packet ("ext " . $ns->{json_coder}->encode (\@msg));
   }
}

sub msg_cb {
   my ($self, $cb, $type, @arg) = @_;

   if (my $ws = $self->{ws}) {
      my $rid = $ws->{ns}->alloc_wid;

      if ($cb) {
         $ws->{ns}{widget_cb}{$rid} = sub {
            delete $ws->{ns}{widget_cb}{$rid};
            $ws->{ns}->free_wid ($rid);
            &$cb
         };

         $self->msg ($type, $rid, @arg);
      } else {
         # synchronous case
         my $wait = new Coro::Signal;
         my @res;

         $ws->{ns}{widget_cb}{$rid} = sub {
            delete $ws->{ns}{widget_cb}{$rid};
            $ws->{ns}->free_wid ($rid);

            @res = @_;
            $wait->send;
         };
         $self->msg ($type, $rid, @arg);
         $wait->wait;

         return @res;
      }
   }

   ()
}

sub DESTROY {
   my ($self) = @_;

   delete $self->{ns}{widget}{$self->{id}};

   if (my $ws = $self->{ws}) {
      $self->msg (w_c => 0, "destroy");
      delete $ws->{_w}{$self->{id}};
   }
}

sub cb {
   my ($self, $cb) = @_;

   my $proxy = bless {
      ns => $self->{ns},
      id => $self->{ns}->alloc_wid,
   }, "ext::widget::callback";

   cf::weaken $proxy->{ns};

   $self->{ns}{widget_cb}{$proxy->{id}} = $cb;

   $proxy
}

sub oneshot_cb {
   my ($self, $cb) = @_;

   if ("CODE" eq ref $cb) {
      my $ocb = $cb;
      $cb = cb $self, sub {
         undef $cb;
         &$ocb
      };
   }

   $cb
}

sub set {
   my ($self, @kv) = @_;

   $self->msg (w_s => \@kv);
}

sub get {
   my ($self, $member, $cb) = @_;

   $self->msg_cb ($cb, w_g => ref $member ? @$member : $member);
}

sub TO_JSON {
   { "\fw" => $_[0]{id} }
}

our $AUTOLOAD;

sub AUTOLOAD {
   $AUTOLOAD =~ s/^.*://
      or return;

   my $self = shift;

   #TODO: handle non-void context
   $self->msg (w_c => 0, $AUTOLOAD, @_);

   ()
}

package ext::widget::callback;

sub DESTROY {
   my ($self) = @_;

   if (my $ns = $self->{ns}) {
      delete $ns->{widget_cb}{$self->{id}};
      $ns->free_wid ($self->{id});
   }
}

sub TO_JSON {
   { "\fc" => $_[0]{id} }
}

Revision:	1.29
Committed:	Mon Oct 29 23:56:43 2012 UTC (13 years, 10 months ago) by root
Branch:	MAIN
CVS Tags:	rel-3_1, HEAD
Changes since 1.28:	+1 -1 lines
Log Message:	trailing space removal
#	User	Rev	Content
1	root	1.1	#! perl # mandatory depends=login
2
3			# sends the following ext message types
4	root	1.17	# ws_a id name... # associate well-known widget with given id
5	root	1.14	# ws_n ws # widgetset new
6			# ws_d ws # widgetset destroy
7	root	1.17	# ws_c ws id class @args # widgetset create
8	root	1.21	# ws_ct ws ttype ttext done_cb \%cfg # widgetset create from template
9	root	1.17	# w_c id rid name @args # widget method call
10	root	1.10	# w_s id @attr # widget member set
11			# w_g id rid @attr # widget member get
12	root	1.1	#
13			# and expects the following exti message types
14	root	1.19	# w_e id @args # widget_call
15	root	1.1
16			cf::client->attach (
17			on_connect => sub {
18			my ($ns) = @_;
19
20			$ns->{id} = "a";
21	root	1.19	$ns->{json_coder}->filter_json_single_key_object ("\fw" => sub {
22	root	1.23	$ns->{widget}{$_[0]}
23	root	1.4	});
24	root	1.23
25			cf::weaken $ns;
26	root	1.1	},
27			);
28
29	root	1.2	sub csc_update_stats {
30			my ($ns) = @_;
31
32			while (my ($k, $v) = each %{ $ns->{csc}{stat} }) {
33			$v->set_text ($ns->pl->ob->stats->$k);
34			}
35			}
36
37	root	1.21	my $cg_template = eval <<EOF;
38			[
39			Toplevel => {
40			s_id => "toplevel",
41			title => "Character Creation",
42			x => "center",
43			y => "center",
44			z => 5,
45			force_w => 760,
46			force_h => 440,
47			s_cl => [VBox => { s_cl => [
48			Label => {
49			text => "Character Creation",
50			fontsize => 1,
51			align => 0,
52			},
53			Label => {
54			markup => "View or Edit your character attributes below, then press <b>Finish</b> to create your character",
55			fontsize => 0.8,
56			align => 0,
57			},
58			HBox => { s_cl => [
59			Face => {
60			s_id => "face",
61			face => 0,
62			bg => [.2, .2, .2, 1],
63			min_w => 64,
64			min_h => 64,
65			},
66			Label => {
67			s_id => "desc",
68			fontsize => 0.8,
69			ellipsize => 0,
70			},
71			]},
72			Notebook => {
73			expand => 1,
74			s_cl => [
75			Table => {
76			c_tab => ["Basics", "Title, background and other information of your character."],
77			},
78			Table => {
79			c_tab => ["Stats", "Your character's primary stats such as strength, dexterity and so on."],
80			},
81			Table => {
82			c_tab => ["Race", "Your character's race."],
83			},
84			Table => {
85			c_tab => ["Class", "Your character's initial class."],
86			},
87			],
88			},
89			Button => {
90			s_id => "finish",
91			text => "Finish",
92			},
93			]}],
94			},
95			]
96			EOF
97			die if $@;
98
99	root	1.2	sub csc_start {
100			my ($ns) = @_;
101
102			my $ws = $ns->{csc} = $ns->new_widgetset;
103
104			my $w = $ws->new (Toplevel =>
105			min_w => 600,
106			min_h => 400,
107			x => "center",
108			y => "center",
109			title => "Character Creation",
110	root	1.3	has_close_button => 1,
111			on_delete => sub {
112			$ws->destroy;
113			},
114	root	1.2	);
115
116			$w->add (my $ntb = $ws->new (Notebook => expand => 1));
117
118	root	1.17	$ntb->add_tab (Statistics => (my $stats = $ws->new (Table => expand => 1)), "Basic statistics of your new character");
119	root	1.2
120	root	1.17	$stats->add_at (0, 0, (my $statstable = $ws->new ("Table")));
121	root	1.2
122			for (
123	root	1.3	[0, "Str"],
124			[1, "Dex"],
125			[2, "Con"],
126			[3, "Int"],
127			[4, "Wis"],
128			[5, "Pow"],
129			[6, "Cha"],
130	root	1.2	) {
131	root	1.3	my ($x, $label) = @$_;
132	root	1.2
133	root	1.9	$statstable->add_at ($x, 0, $ws->new (Label =>
134	root	1.2	can_hover => 1, can_events => 1,
135			align => +1, text => $label, tooltip => "#stat_$label",
136			));
137	root	1.9	$statstable->add_at ($x, 1, $ws->{stat}{$label} = $ws->new (Label =>
138	root	1.2	can_hover => 1, can_events => 1,
139			align => +1, template => "88", tooltip => "#stat_$label",
140			));
141			}
142
143			csc_update_stats $ns;
144
145	root	1.17	$ws->{tl} = $w;
146	root	1.2	$w->show;
147	root	1.22
148			# my ($tl, $entry) = $ws->template (inline => $cg_template,
149			# [
150			# toplevel => {},
151			# entry => {
152			# text => "xyz",
153			# on_changed => sub {
154			# warn "changed<@_>\n";#d#
155			# },
156			# },
157			# ],
158			# );
159			#
160			# $tl->show;
161			#
162			# $ns->{xxxw} = [$tl, $entry];#d#
163	root	1.29	#
164	root	1.22	# $ws->find ("setup_notebook")->add ($ws->{tab});
165			# $ws->find ("setup_dialog")->toggle_visibility;
166	root	1.2	}
167
168	root	1.1	cf::player->attach (
169			on_login => sub {
170			my ($pl) = @_;
171
172	root	1.22	my $ns = $pl->ns;
173			return unless $ns->{can_widget};
174
175	root	1.8	return unless $cf::CFG{devel};
176	root	1.1
177	root	1.5	#csc_start $ns;
178	root	1.1	},
179			);
180
181			cf::register_exticmd w_e => sub {
182	root	1.19	my ($ns, $id, @args) = @_;
183	root	1.1
184	root	1.19	if (my $cb = $ns->{widget_cb}{$id}) {
185			$cb->(@args);
186	root	1.1	}
187
188			()
189			};
190
191			sub cf::client::new_widgetset {
192			my ($self) = @_;
193
194			my $id = ++$self->{id};
195
196			my $ws = bless {
197			id => $id,
198			ns => $self,
199	root	1.12	_w => {},
200	root	1.1	}, "ext::widget::set";
201
202	root	1.23	cf::weaken $ws->{ns};
203
204	root	1.14	$ws->msg (ws_n => $id);
205	root	1.1
206			$ws
207			}
208
209	root	1.19	sub cf::client::alloc_wid {
210			pop @{ $_[0]{ids} }
211			or ++$_[0]{id}
212			}
213
214			sub cf::client::free_wid {
215			push @{ $_[0]{ids} }, $_[1];
216			}
217
218	root	1.1	#############################################################################
219
220			package ext::widget::set;
221
222			sub DESTROY {
223			$_[0]->destroy;
224			}
225
226			sub destroy {
227			my ($self) = @_;
228
229	root	1.14	$self->msg (ws_d => $self->{id});
230	root	1.1	delete $self->{ns};
231			$_->destroy
232			for values %{ $self->{w} };
233			}
234
235			sub msg {
236	root	1.14	my ($self, @msg) = @_;
237	root	1.1
238			if (my $ns = shift->{ns}) {
239	root	1.25	return unless $ns->{json_coder};#d# might be gone at destroy time(??)
240	root	1.14	$ns->send_packet ("ext " . $ns->{json_coder}->encode (\@msg));
241	root	1.1	}
242			}
243
244	root	1.17	sub alloc {
245			my ($self) = @_;
246	root	1.1
247	root	1.19	my $id = $self->{ns}->alloc_wid;
248	root	1.1
249	root	1.13	my $proxy = bless {
250	root	1.1	id => $id,
251			}, "ext::widget::proxy";
252
253	root	1.26	cf::weaken ($proxy->{ns} = $self->{ns});
254			cf::weaken ($self->{ns}{widget}{$id} = $proxy);
255	root	1.1
256	root	1.17	$proxy
257			}
258
259			sub new {
260			my ($self, $class, %args) = @_;
261
262			my $proxy = $self->alloc;
263
264	root	1.23	cf::weaken
265			+($self->{_w}{$proxy->{id}} = $proxy),
266			+($proxy->{ws} = $self);
267	root	1.17
268	root	1.1	for my $ev (grep /^on_/, keys %args) {
269	root	1.19	$args{$ev} = $proxy->{"_$ev"} = $proxy->cb ($args{$ev});
270	root	1.1	}
271
272			$self->msg (ws_c =>
273	root	1.16	$self->{id},
274	root	1.17	$proxy->{id},
275	root	1.14	$class,
276			\%args,
277	root	1.1	);
278
279			$proxy
280			}
281
282	root	1.20	sub template {
283	root	1.21	my ($self, $type, $template, $args, $done_cb) = @_;
284	root	1.20
285			my %cfg;
286
287	root	1.21	while (@$args) {
288			my ($name, $args) = splice @$args, 0, 2, ();
289	root	1.20
290			my $proxy = $self->alloc;
291
292	root	1.22	$self->{delete $args->{alias} or $name} = $proxy;
293
294	root	1.23	cf::weaken
295			+($self->{_w}{$proxy->{id}} = $proxy),
296			+($proxy->{ws} = $self);
297	root	1.20
298			for my $ev (grep /^on_/, keys %$args) {
299			$args->{$ev} = $proxy->{"_$ev"} = $proxy->cb ($args->{$ev});
300			}
301
302			$cfg{$name} = {
303			%$args,
304			id => $proxy->{id},
305			};
306			}
307
308	root	1.21	if ($done_cb) {
309			my $proxy = $self->alloc;
310			my $ocb = $done_cb;
311			$done_cb = $proxy->cb (sub {
312			undef $proxy;
313			undef $done_cb;
314			&$ocb
315			});
316			}
317
318	root	1.22	if ($type eq "face") {
319			$self->{ns}->send_face ($template, 100);
320			$self->{ns}->flush_fx;
321			}
322
323	root	1.20	$self->msg (ws_ct =>
324			$self->{id},
325	root	1.21	$type => $template,
326			$done_cb,
327	root	1.20	\%cfg,
328			);
329			}
330
331	root	1.17	sub find {
332			my ($self, @names) = @_;
333
334			my @res;
335			my @alloc;
336
337			for my $name (@names) {
338			push @res, $self->{ns}{widget_wkw}{$name} \|\|= do {
339			my $proxy = $self->alloc;
340
341			push @alloc, $proxy->{id} => $name;
342
343			$proxy
344			};
345			}
346
347			$self->msg (ws_a => @alloc)
348			if @alloc;
349
350			wantarray ? @res : $res[0]
351			}
352
353	root	1.1	#############################################################################
354
355			package ext::widget::proxy;
356
357			sub msg {
358	root	1.14	my ($self, $type, @arg) = @_;
359	root	1.1
360	root	1.17	if (my $ns = $self->{ns}) {
361			my @msg = ($type, $self->{id}, @arg);
362			$ns->send_packet ("ext " . $ns->{json_coder}->encode (\@msg));
363	root	1.1	}
364			}
365
366			sub msg_cb {
367	root	1.14	my ($self, $cb, $type, @arg) = @_;
368	root	1.1
369			if (my $ws = $self->{ws}) {
370	root	1.19	my $rid = $ws->{ns}->alloc_wid;
371	root	1.1
372	root	1.19	if ($cb) {
373			$ws->{ns}{widget_cb}{$rid} = sub {
374			delete $ws->{ns}{widget_cb}{$rid};
375			$ws->{ns}->free_wid ($rid);
376			&$cb
377			};
378	root	1.1
379	root	1.19	$self->msg ($type, $rid, @arg);
380	root	1.1	} else {
381			# synchronous case
382			my $wait = new Coro::Signal;
383			my @res;
384
385	root	1.19	$ws->{ns}{widget_cb}{$rid} = sub {
386			delete $ws->{ns}{widget_cb}{$rid};
387			$ws->{ns}->free_wid ($rid);
388
389	root	1.1	@res = @_;
390			$wait->send;
391			};
392	root	1.19	$self->msg ($type, $rid, @arg);
393	root	1.1	$wait->wait;
394
395			return @res;
396			}
397			}
398
399			()
400			}
401
402	root	1.23	sub DESTROY {
403			my ($self) = @_;
404
405			delete $self->{ns}{widget}{$self->{id}};
406
407			if (my $ws = $self->{ws}) {
408			$self->msg (w_c => 0, "destroy");
409			delete $ws->{_w}{$self->{id}};
410			}
411			}
412
413			sub cb {
414			my ($self, $cb) = @_;
415
416			my $proxy = bless {
417			ns => $self->{ns},
418			id => $self->{ns}->alloc_wid,
419			}, "ext::widget::callback";
420
421			cf::weaken $proxy->{ns};
422
423			$self->{ns}{widget_cb}{$proxy->{id}} = $cb;
424
425			$proxy
426			}
427
428			sub oneshot_cb {
429			my ($self, $cb) = @_;
430
431			if ("CODE" eq ref $cb) {
432			my $ocb = $cb;
433			$cb = cb $self, sub {
434			undef $cb;
435			&$ocb
436			};
437			}
438
439			$cb
440			}
441
442	root	1.1	sub set {
443	root	1.12	my ($self, @kv) = @_;
444	root	1.1
445	root	1.14	$self->msg (w_s => \@kv);
446	root	1.1	}
447
448			sub get {
449			my ($self, $member, $cb) = @_;
450
451	root	1.19	$self->msg_cb ($cb, w_g => ref $member ? @$member : $member);
452	root	1.1	}
453
454			sub TO_JSON {
455	root	1.19	{ "\fw" => $_[0]{id} }
456	root	1.1	}
457
458			our $AUTOLOAD;
459
460			sub AUTOLOAD {
461			$AUTOLOAD =~ s/^.*://
462			or return;
463
464			my $self = shift;
465
466	root	1.17	#TODO: handle non-void context
467			$self->msg (w_c => 0, $AUTOLOAD, @_);
468	root	1.1
469			()
470			}
471
472	root	1.19	package ext::widget::callback;
473
474			sub DESTROY {
475			my ($self) = @_;
476
477			if (my $ns = $self->{ns}) {
478			delete $ns->{widget_cb}{$self->{id}};
479			$ns->free_wid ($self->{id});
480			}
481			}
482
483			sub TO_JSON {
484			{ "\fc" => $_[0]{id} }
485			}
486