-
Notifications
You must be signed in to change notification settings - Fork 12
/
widgets.php
1650 lines (1426 loc) · 54.3 KB
/
widgets.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
/**
* Core Widgets API
*
* This API is used for creating dynamic sidebar without hardcoding functionality into
* themes
*
* Includes both internal ClassicPress routines and theme-use routines.
*
* This functionality was found in a plugin before the WordPress 2.2 release, which
* included it in the core from that point on.
*
* @link https://codex.wordpress.org/Plugins/WordPress_Widgets ClassicPress Widgets
* @link https://codex.wordpress.org/Plugins/WordPress_Widgets_Api Widgets API
*
* @package ClassicPress
* @subpackage Widgets
* @since WP-2.2.0
*/
//
// Global Variables
//
/** @ignore */
global $wp_registered_sidebars, $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates;
/**
* Stores the sidebars, since many themes can have more than one.
*
* @global array $wp_registered_sidebars
* @since WP-2.2.0
*/
$wp_registered_sidebars = array();
/**
* Stores the registered widgets.
*
* @global array $wp_registered_widgets
* @since WP-2.2.0
*/
$wp_registered_widgets = array();
/**
* Stores the registered widget control (options).
*
* @global array $wp_registered_widget_controls
* @since WP-2.2.0
*/
$wp_registered_widget_controls = array();
/**
* @global array $wp_registered_widget_updates
*/
$wp_registered_widget_updates = array();
/**
* Private
*
* @global array $_wp_sidebars_widgets
*/
$_wp_sidebars_widgets = array();
/**
* Private
*
* @global array $_wp_deprecated_widgets_callbacks
*/
$GLOBALS['_wp_deprecated_widgets_callbacks'] = array(
'wp_widget_pages',
'wp_widget_pages_control',
'wp_widget_calendar',
'wp_widget_calendar_control',
'wp_widget_archives',
'wp_widget_archives_control',
'wp_widget_links',
'wp_widget_meta',
'wp_widget_meta_control',
'wp_widget_search',
'wp_widget_recent_entries',
'wp_widget_recent_entries_control',
'wp_widget_tag_cloud',
'wp_widget_tag_cloud_control',
'wp_widget_categories',
'wp_widget_categories_control',
'wp_widget_text',
'wp_widget_text_control',
'wp_widget_rss',
'wp_widget_rss_control',
'wp_widget_recent_comments',
'wp_widget_recent_comments_control'
);
//
// Template tags & API functions
//
/**
* Register a widget
*
* Registers a WP_Widget widget
*
* @since WP-2.8.0
* @since WP-4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
* instead of simply a `WP_Widget` subclass name.
*
* @see WP_Widget
*
* @global WP_Widget_Factory $wp_widget_factory
*
* @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
*/
function register_widget( $widget ) {
global $wp_widget_factory;
$wp_widget_factory->register( $widget );
}
/**
* Unregisters a widget.
*
* Unregisters a WP_Widget widget. Useful for un-registering default widgets.
* Run within a function hooked to the {@see 'widgets_init'} action.
*
* @since WP-2.8.0
* @since WP-4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
* instead of simply a `WP_Widget` subclass name.
*
* @see WP_Widget
*
* @global WP_Widget_Factory $wp_widget_factory
*
* @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
*/
function unregister_widget( $widget ) {
global $wp_widget_factory;
$wp_widget_factory->unregister( $widget );
}
/**
* Creates multiple sidebars.
*
* If you wanted to quickly create multiple sidebars for a theme or internally.
* This function will allow you to do so. If you don't pass the 'name' and/or
* 'id' in `$args`, then they will be built for you.
*
* @since WP-2.2.0
*
* @see register_sidebar() The second parameter is documented by register_sidebar() and is the same here.
*
* @global array $wp_registered_sidebars
*
* @param int $number Optional. Number of sidebars to create. Default 1.
* @param array|string $args {
* Optional. Array or string of arguments for building a sidebar.
*
* @type string $id The base string of the unique identifier for each sidebar. If provided, and multiple
* sidebars are being defined, the id will have "-2" appended, and so on.
* Default 'sidebar-' followed by the number the sidebar creation is currently at.
* @type string $name The name or title for the sidebars displayed in the admin dashboard. If registering
* more than one sidebar, include '%d' in the string as a placeholder for the uniquely
* assigned number for each sidebar.
* Default 'Sidebar' for the first sidebar, otherwise 'Sidebar %d'.
* }
*/
function register_sidebars( $number = 1, $args = array() ) {
global $wp_registered_sidebars;
$number = (int) $number;
if ( is_string($args) )
parse_str($args, $args);
for ( $i = 1; $i <= $number; $i++ ) {
$_args = $args;
if ( $number > 1 )
$_args['name'] = isset($args['name']) ? sprintf($args['name'], $i) : sprintf(__('Sidebar %d'), $i);
else
$_args['name'] = isset($args['name']) ? $args['name'] : __('Sidebar');
// Custom specified ID's are suffixed if they exist already.
// Automatically generated sidebar names need to be suffixed regardless starting at -0
if ( isset($args['id']) ) {
$_args['id'] = $args['id'];
$n = 2; // Start at -2 for conflicting custom ID's
while ( is_registered_sidebar( $_args['id'] ) ) {
$_args['id'] = $args['id'] . '-' . $n++;
}
} else {
$n = count( $wp_registered_sidebars );
do {
$_args['id'] = 'sidebar-' . ++$n;
} while ( is_registered_sidebar( $_args['id'] ) );
}
register_sidebar($_args);
}
}
/**
* Builds the definition for a single sidebar and returns the ID.
*
* Accepts either a string or an array and then parses that against a set
* of default arguments for the new sidebar. ClassicPress will automatically
* generate a sidebar ID and name based on the current number of registered
* sidebars if those arguments are not included.
*
* When allowing for automatic generation of the name and ID parameters, keep
* in mind that the incrementor for your sidebar can change over time depending
* on what other plugins and themes are installed.
*
* If theme support for 'widgets' has not yet been added when this function is
* called, it will be automatically enabled through the use of add_theme_support()
*
* @since WP-2.2.0
*
* @global array $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
*
* @param array|string $args {
* Optional. Array or string of arguments for the sidebar being registered.
*
* @type string $name The name or title of the sidebar displayed in the Widgets
* interface. Default 'Sidebar $instance'.
* @type string $id The unique identifier by which the sidebar will be called.
* Default 'sidebar-$instance'.
* @type string $description Description of the sidebar, displayed in the Widgets interface.
* Default empty string.
* @type string $class Extra CSS class to assign to the sidebar in the Widgets interface.
* Default empty.
* @type string $before_widget HTML content to prepend to each widget's HTML output when
* assigned to this sidebar. Default is an opening list item element.
* @type string $after_widget HTML content to append to each widget's HTML output when
* assigned to this sidebar. Default is a closing list item element.
* @type string $before_title HTML content to prepend to the sidebar title when displayed.
* Default is an opening h2 element.
* @type string $after_title HTML content to append to the sidebar title when displayed.
* Default is a closing h2 element.
* }
* @return string Sidebar ID added to $wp_registered_sidebars global.
*/
function register_sidebar($args = array()) {
global $wp_registered_sidebars;
$i = count($wp_registered_sidebars) + 1;
$id_is_empty = empty( $args['id'] );
$defaults = array(
'name' => sprintf(__('Sidebar %d'), $i ),
'id' => "sidebar-$i",
'description' => '',
'class' => '',
'before_widget' => '<li id="%1$s" class="widget %2$s">',
'after_widget' => "</li>\n",
'before_title' => '<h2 class="widgettitle">',
'after_title' => "</h2>\n",
);
$sidebar = wp_parse_args( $args, $defaults );
if ( $id_is_empty ) {
/* translators: 1: the id argument, 2: sidebar name, 3: recommended id value */
_doing_it_wrong( __FUNCTION__, sprintf( __( 'No %1$s was set in the arguments array for the "%2$s" sidebar. Defaulting to "%3$s". Manually set the %1$s to "%3$s" to silence this notice and keep existing sidebar content.' ), '<code>id</code>', $sidebar['name'], $sidebar['id'] ), 'WP-4.2.0' );
}
$wp_registered_sidebars[$sidebar['id']] = $sidebar;
add_theme_support('widgets');
/**
* Fires once a sidebar has been registered.
*
* @since WP-3.0.0
*
* @param array $sidebar Parsed arguments for the registered sidebar.
*/
do_action( 'register_sidebar', $sidebar );
return $sidebar['id'];
}
/**
* Removes a sidebar from the list.
*
* @since WP-2.2.0
*
* @global array $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
*
* @param string|int $sidebar_id The ID of the sidebar when it was registered.
*/
function unregister_sidebar( $sidebar_id ) {
global $wp_registered_sidebars;
unset( $wp_registered_sidebars[ $sidebar_id ] );
}
/**
* Checks if a sidebar is registered.
*
* @since WP-4.4.0
*
* @global array $wp_registered_sidebars Registered sidebars.
*
* @param string|int $sidebar_id The ID of the sidebar when it was registered.
* @return bool True if the sidebar is registered, false otherwise.
*/
function is_registered_sidebar( $sidebar_id ) {
global $wp_registered_sidebars;
return isset( $wp_registered_sidebars[ $sidebar_id ] );
}
/**
* Register an instance of a widget.
*
* The default widget option is 'classname' that can be overridden.
*
* The function can also be used to un-register widgets when `$output_callback`
* parameter is an empty string.
*
* @since WP-2.2.0
*
* @global array $wp_registered_widgets Uses stored registered widgets.
* @global array $wp_registered_widget_controls Stores the registered widget controls (options).
* @global array $wp_registered_widget_updates
* @global array $_wp_deprecated_widgets_callbacks
*
* @param int|string $id Widget ID.
* @param string $name Widget display title.
* @param callable $output_callback Run when widget is called.
* @param array $options {
* Optional. An array of supplementary widget options for the instance.
*
* @type string $classname Class name for the widget's HTML container. Default is a shortened
* version of the output callback name.
* @type string $description Widget description for display in the widget administration
* panel and/or theme.
* }
*/
function wp_register_sidebar_widget( $id, $name, $output_callback, $options = array() ) {
global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates, $_wp_deprecated_widgets_callbacks;
$id = strtolower($id);
if ( empty($output_callback) ) {
unset($wp_registered_widgets[$id]);
return;
}
$id_base = _get_widget_id_base($id);
if ( in_array($output_callback, $_wp_deprecated_widgets_callbacks, true) && !is_callable($output_callback) ) {
unset( $wp_registered_widget_controls[ $id ] );
unset( $wp_registered_widget_updates[ $id_base ] );
return;
}
$defaults = array('classname' => $output_callback);
$options = wp_parse_args($options, $defaults);
$widget = array(
'name' => $name,
'id' => $id,
'callback' => $output_callback,
'params' => array_slice(func_get_args(), 4)
);
$widget = array_merge($widget, $options);
if ( is_callable($output_callback) && ( !isset($wp_registered_widgets[$id]) || did_action( 'widgets_init' ) ) ) {
/**
* Fires once for each registered widget.
*
* @since WP-3.0.0
*
* @param array $widget An array of default widget arguments.
*/
do_action( 'wp_register_sidebar_widget', $widget );
$wp_registered_widgets[$id] = $widget;
}
}
/**
* Retrieve description for widget.
*
* When registering widgets, the options can also include 'description' that
* describes the widget for display on the widget administration panel or
* in the theme.
*
* @since WP-2.5.0
*
* @global array $wp_registered_widgets
*
* @param int|string $id Widget ID.
* @return string|void Widget description, if available.
*/
function wp_widget_description( $id ) {
if ( !is_scalar($id) )
return;
global $wp_registered_widgets;
if ( isset($wp_registered_widgets[$id]['description']) )
return esc_html( $wp_registered_widgets[$id]['description'] );
}
/**
* Retrieve description for a sidebar.
*
* When registering sidebars a 'description' parameter can be included that
* describes the sidebar for display on the widget administration panel.
*
* @since WP-2.9.0
*
* @global array $wp_registered_sidebars
*
* @param string $id sidebar ID.
* @return string|void Sidebar description, if available.
*/
function wp_sidebar_description( $id ) {
if ( !is_scalar($id) )
return;
global $wp_registered_sidebars;
if ( isset( $wp_registered_sidebars[ $id ]['description'] ) ) {
return wp_kses( $wp_registered_sidebars[ $id ]['description'], 'sidebar_description' );
}
}
/**
* Remove widget from sidebar.
*
* @since WP-2.2.0
*
* @param int|string $id Widget ID.
*/
function wp_unregister_sidebar_widget($id) {
/**
* Fires just before a widget is removed from a sidebar.
*
* @since WP-3.0.0
*
* @param int $id The widget ID.
*/
do_action( 'wp_unregister_sidebar_widget', $id );
wp_register_sidebar_widget($id, '', '');
wp_unregister_widget_control($id);
}
/**
* Registers widget control callback for customizing options.
*
* @since WP-2.2.0
*
* @todo `$params` parameter?
*
* @global array $wp_registered_widget_controls
* @global array $wp_registered_widget_updates
* @global array $wp_registered_widgets
* @global array $_wp_deprecated_widgets_callbacks
*
* @param int|string $id Sidebar ID.
* @param string $name Sidebar display name.
* @param callable $control_callback Run when sidebar is displayed.
* @param array $options {
* Optional. Array or string of control options. Default empty array.
*
* @type int $height Never used. Default 200.
* @type int $width Width of the fully expanded control form (but try hard to use the default width).
* Default 250.
* @type int|string $id_base Required for multi-widgets, i.e widgets that allow multiple instances such as the
* text widget. The widget id will end up looking like `{$id_base}-{$unique_number}`.
* }
*/
function wp_register_widget_control( $id, $name, $control_callback, $options = array() ) {
global $wp_registered_widget_controls, $wp_registered_widget_updates, $wp_registered_widgets, $_wp_deprecated_widgets_callbacks;
$id = strtolower($id);
$id_base = _get_widget_id_base($id);
if ( empty($control_callback) ) {
unset($wp_registered_widget_controls[$id]);
unset($wp_registered_widget_updates[$id_base]);
return;
}
if ( in_array($control_callback, $_wp_deprecated_widgets_callbacks, true) && !is_callable($control_callback) ) {
unset( $wp_registered_widgets[ $id ] );
return;
}
if ( isset($wp_registered_widget_controls[$id]) && !did_action( 'widgets_init' ) )
return;
$defaults = array('width' => 250, 'height' => 200 ); // height is never used
$options = wp_parse_args($options, $defaults);
$options['width'] = (int) $options['width'];
$options['height'] = (int) $options['height'];
$widget = array(
'name' => $name,
'id' => $id,
'callback' => $control_callback,
'params' => array_slice(func_get_args(), 4)
);
$widget = array_merge($widget, $options);
$wp_registered_widget_controls[$id] = $widget;
if ( isset($wp_registered_widget_updates[$id_base]) )
return;
if ( isset($widget['params'][0]['number']) )
$widget['params'][0]['number'] = -1;
unset($widget['width'], $widget['height'], $widget['name'], $widget['id']);
$wp_registered_widget_updates[$id_base] = $widget;
}
/**
* Registers the update callback for a widget.
*
* @since WP-2.8.0
*
* @global array $wp_registered_widget_updates
*
* @param string $id_base The base ID of a widget created by extending WP_Widget.
* @param callable $update_callback Update callback method for the widget.
* @param array $options Optional. Widget control options. See wp_register_widget_control().
* Default empty array.
*/
function _register_widget_update_callback( $id_base, $update_callback, $options = array() ) {
global $wp_registered_widget_updates;
if ( isset($wp_registered_widget_updates[$id_base]) ) {
if ( empty($update_callback) )
unset($wp_registered_widget_updates[$id_base]);
return;
}
$widget = array(
'callback' => $update_callback,
'params' => array_slice(func_get_args(), 3)
);
$widget = array_merge($widget, $options);
$wp_registered_widget_updates[$id_base] = $widget;
}
/**
* Registers the form callback for a widget.
*
* @since WP-2.8.0
*
* @global array $wp_registered_widget_controls
*
* @param int|string $id Widget ID.
* @param string $name Name attribute for the widget.
* @param callable $form_callback Form callback.
* @param array $options Optional. Widget control options. See wp_register_widget_control().
* Default empty array.
*/
function _register_widget_form_callback($id, $name, $form_callback, $options = array()) {
global $wp_registered_widget_controls;
$id = strtolower($id);
if ( empty($form_callback) ) {
unset($wp_registered_widget_controls[$id]);
return;
}
if ( isset($wp_registered_widget_controls[$id]) && !did_action( 'widgets_init' ) )
return;
$defaults = array('width' => 250, 'height' => 200 );
$options = wp_parse_args($options, $defaults);
$options['width'] = (int) $options['width'];
$options['height'] = (int) $options['height'];
$widget = array(
'name' => $name,
'id' => $id,
'callback' => $form_callback,
'params' => array_slice(func_get_args(), 4)
);
$widget = array_merge($widget, $options);
$wp_registered_widget_controls[$id] = $widget;
}
/**
* Remove control callback for widget.
*
* @since WP-2.2.0
*
* @param int|string $id Widget ID.
*/
function wp_unregister_widget_control($id) {
wp_register_widget_control( $id, '', '' );
}
/**
* Display dynamic sidebar.
*
* By default this displays the default sidebar or 'sidebar-1'. If your theme specifies the 'id' or
* 'name' parameter for its registered sidebars you can pass an id or name as the $index parameter.
* Otherwise, you can pass in a numerical index to display the sidebar at that index.
*
* @since WP-2.2.0
*
* @global array $wp_registered_sidebars
* @global array $wp_registered_widgets
*
* @param int|string $index Optional, default is 1. Index, name or ID of dynamic sidebar.
* @return bool True, if widget sidebar was found and called. False if not found or not called.
*/
function dynamic_sidebar( $index = 1 ) {
global $wp_registered_sidebars, $wp_registered_widgets;
if ( is_int( $index ) ) {
$index = "sidebar-$index";
} else {
$index = sanitize_title( $index );
foreach ( (array) $wp_registered_sidebars as $key => $value ) {
if ( sanitize_title( $value['name'] ) == $index ) {
$index = $key;
break;
}
}
}
$sidebars_widgets = wp_get_sidebars_widgets();
if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) {
/** This action is documented in wp-includes/widget.php */
do_action( 'dynamic_sidebar_before', $index, false );
/** This action is documented in wp-includes/widget.php */
do_action( 'dynamic_sidebar_after', $index, false );
/** This filter is documented in wp-includes/widget.php */
return apply_filters( 'dynamic_sidebar_has_widgets', false, $index );
}
/**
* Fires before widgets are rendered in a dynamic sidebar.
*
* Note: The action also fires for empty sidebars, and on both the front end
* and back end, including the Inactive Widgets sidebar on the Widgets screen.
*
* @since WP-3.9.0
*
* @param int|string $index Index, name, or ID of the dynamic sidebar.
* @param bool $has_widgets Whether the sidebar is populated with widgets.
* Default true.
*/
do_action( 'dynamic_sidebar_before', $index, true );
$sidebar = $wp_registered_sidebars[$index];
$did_one = false;
foreach ( (array) $sidebars_widgets[$index] as $id ) {
if ( !isset($wp_registered_widgets[$id]) ) continue;
$params = array_merge(
array( array_merge( $sidebar, array('widget_id' => $id, 'widget_name' => $wp_registered_widgets[$id]['name']) ) ),
(array) $wp_registered_widgets[$id]['params']
);
// Substitute HTML id and class attributes into before_widget
$classname_ = '';
foreach ( (array) $wp_registered_widgets[$id]['classname'] as $cn ) {
if ( is_string($cn) )
$classname_ .= '_' . $cn;
elseif ( is_object($cn) )
$classname_ .= '_' . get_class($cn);
}
$classname_ = ltrim($classname_, '_');
$params[0]['before_widget'] = sprintf($params[0]['before_widget'], $id, $classname_);
/**
* Filters the parameters passed to a widget's display callback.
*
* Note: The filter is evaluated on both the front end and back end,
* including for the Inactive Widgets sidebar on the Widgets screen.
*
* @since WP-2.5.0
*
* @see register_sidebar()
*
* @param array $params {
* @type array $args {
* An array of widget display arguments.
*
* @type string $name Name of the sidebar the widget is assigned to.
* @type string $id ID of the sidebar the widget is assigned to.
* @type string $description The sidebar description.
* @type string $class CSS class applied to the sidebar container.
* @type string $before_widget HTML markup to prepend to each widget in the sidebar.
* @type string $after_widget HTML markup to append to each widget in the sidebar.
* @type string $before_title HTML markup to prepend to the widget title when displayed.
* @type string $after_title HTML markup to append to the widget title when displayed.
* @type string $widget_id ID of the widget.
* @type string $widget_name Name of the widget.
* }
* @type array $widget_args {
* An array of multi-widget arguments.
*
* @type int $number Number increment used for multiples of the same widget.
* }
* }
*/
$params = apply_filters( 'dynamic_sidebar_params', $params );
$callback = $wp_registered_widgets[$id]['callback'];
/**
* Fires before a widget's display callback is called.
*
* Note: The action fires on both the front end and back end, including
* for widgets in the Inactive Widgets sidebar on the Widgets screen.
*
* The action is not fired for empty sidebars.
*
* @since WP-3.0.0
*
* @param array $widget_id {
* An associative array of widget arguments.
*
* @type string $name Name of the widget.
* @type string $id Widget ID.
* @type array|callable $callback When the hook is fired on the front end, $callback is an array
* containing the widget object. Fired on the back end, $callback
* is 'wp_widget_control', see $_callback.
* @type array $params An associative array of multi-widget arguments.
* @type string $classname CSS class applied to the widget container.
* @type string $description The widget description.
* @type array $_callback When the hook is fired on the back end, $_callback is populated
* with an array containing the widget object, see $callback.
* }
*/
do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] );
if ( is_callable($callback) ) {
call_user_func_array($callback, $params);
$did_one = true;
}
}
/**
* Fires after widgets are rendered in a dynamic sidebar.
*
* Note: The action also fires for empty sidebars, and on both the front end
* and back end, including the Inactive Widgets sidebar on the Widgets screen.
*
* @since WP-3.9.0
*
* @param int|string $index Index, name, or ID of the dynamic sidebar.
* @param bool $has_widgets Whether the sidebar is populated with widgets.
* Default true.
*/
do_action( 'dynamic_sidebar_after', $index, true );
/**
* Filters whether a sidebar has widgets.
*
* Note: The filter is also evaluated for empty sidebars, and on both the front end
* and back end, including the Inactive Widgets sidebar on the Widgets screen.
*
* @since WP-3.9.0
*
* @param bool $did_one Whether at least one widget was rendered in the sidebar.
* Default false.
* @param int|string $index Index, name, or ID of the dynamic sidebar.
*/
return apply_filters( 'dynamic_sidebar_has_widgets', $did_one, $index );
}
/**
* Whether widget is displayed on the front end.
*
* Either $callback or $id_base can be used
* $id_base is the first argument when extending WP_Widget class
* Without the optional $widget_id parameter, returns the ID of the first sidebar
* in which the first instance of the widget with the given callback or $id_base is found.
* With the $widget_id parameter, returns the ID of the sidebar where
* the widget with that callback/$id_base AND that ID is found.
*
* NOTE: $widget_id and $id_base are the same for single widgets. To be effective
* this function has to run after widgets have initialized, at action {@see 'init'} or later.
*
* @since WP-2.2.0
*
* @global array $wp_registered_widgets
*
* @param string|false $callback Optional, Widget callback to check. Default false.
* @param int|false $widget_id Optional. Widget ID. Optional, but needed for checking. Default false.
* @param string|false $id_base Optional. The base ID of a widget created by extending WP_Widget. Default false.
* @param bool $skip_inactive Optional. Whether to check in 'wp_inactive_widgets'. Default true.
* @return string|false False if widget is not active or id of sidebar in which the widget is active.
*/
function is_active_widget( $callback = false, $widget_id = false, $id_base = false, $skip_inactive = true ) {
global $wp_registered_widgets;
$sidebars_widgets = wp_get_sidebars_widgets();
if ( is_array($sidebars_widgets) ) {
foreach ( $sidebars_widgets as $sidebar => $widgets ) {
if ( $skip_inactive && ( 'wp_inactive_widgets' === $sidebar || 'orphaned_widgets' === substr( $sidebar, 0, 16 ) ) ) {
continue;
}
if ( is_array($widgets) ) {
foreach ( $widgets as $widget ) {
if ( ( $callback && isset($wp_registered_widgets[$widget]['callback']) && $wp_registered_widgets[$widget]['callback'] == $callback ) || ( $id_base && _get_widget_id_base($widget) == $id_base ) ) {
if ( !$widget_id || $widget_id == $wp_registered_widgets[$widget]['id'] )
return $sidebar;
}
}
}
}
}
return false;
}
/**
* Whether the dynamic sidebar is enabled and used by theme.
*
* @since WP-2.2.0
*
* @global array $wp_registered_widgets
* @global array $wp_registered_sidebars
*
* @return bool True, if using widgets. False, if not using widgets.
*/
function is_dynamic_sidebar() {
global $wp_registered_widgets, $wp_registered_sidebars;
$sidebars_widgets = get_option('sidebars_widgets');
foreach ( (array) $wp_registered_sidebars as $index => $sidebar ) {
if ( ! empty( $sidebars_widgets[ $index ] ) ) {
foreach ( (array) $sidebars_widgets[$index] as $widget )
if ( array_key_exists($widget, $wp_registered_widgets) )
return true;
}
}
return false;
}
/**
* Whether a sidebar is in use.
*
* @since WP-2.8.0
*
* @param string|int $index Sidebar name, id or number to check.
* @return bool true if the sidebar is in use, false otherwise.
*/
function is_active_sidebar( $index ) {
$index = ( is_int($index) ) ? "sidebar-$index" : sanitize_title($index);
$sidebars_widgets = wp_get_sidebars_widgets();
$is_active_sidebar = ! empty( $sidebars_widgets[$index] );
/**
* Filters whether a dynamic sidebar is considered "active".
*
* @since WP-3.9.0
*
* @param bool $is_active_sidebar Whether or not the sidebar should be considered "active".
* In other words, whether the sidebar contains any widgets.
* @param int|string $index Index, name, or ID of the dynamic sidebar.
*/
return apply_filters( 'is_active_sidebar', $is_active_sidebar, $index );
}
//
// Internal Functions
//
/**
* Retrieve full list of sidebars and their widget instance IDs.
*
* Will upgrade sidebar widget list, if needed. Will also save updated list, if
* needed.
*
* @since WP-2.2.0
* @access private
*
* @global array $_wp_sidebars_widgets
* @global array $sidebars_widgets
*
* @param bool $deprecated Not used (argument deprecated).
* @return array Upgraded list of widgets to version 3 array format when called from the admin.
*/
function wp_get_sidebars_widgets( $deprecated = true ) {
if ( $deprecated !== true )
_deprecated_argument( __FUNCTION__, 'WP-2.8.1' );
global $_wp_sidebars_widgets, $sidebars_widgets;
// If loading from front page, consult $_wp_sidebars_widgets rather than options
// to see if wp_convert_widget_settings() has made manipulations in memory.
if ( !is_admin() ) {
if ( empty($_wp_sidebars_widgets) )
$_wp_sidebars_widgets = get_option('sidebars_widgets', array());
$sidebars_widgets = $_wp_sidebars_widgets;
} else {
$sidebars_widgets = get_option('sidebars_widgets', array());
}
if ( is_array( $sidebars_widgets ) && isset($sidebars_widgets['array_version']) )
unset($sidebars_widgets['array_version']);
/**
* Filters the list of sidebars and their widgets.
*
* @since WP-2.7.0
*
* @param array $sidebars_widgets An associative array of sidebars and their widgets.
*/
return apply_filters( 'sidebars_widgets', $sidebars_widgets );
}
/**
* Set the sidebar widget option to update sidebars.
*
* @since WP-2.2.0
* @access private
*
* @global array $_wp_sidebars_widgets
* @param array $sidebars_widgets Sidebar widgets and their settings.
*/
function wp_set_sidebars_widgets( $sidebars_widgets ) {
global $_wp_sidebars_widgets;
// Clear cached value used in wp_get_sidebars_widgets().
$_wp_sidebars_widgets = null;
if ( ! isset( $sidebars_widgets['array_version'] ) ) {
$sidebars_widgets['array_version'] = 3;
}
update_option( 'sidebars_widgets', $sidebars_widgets );
}
/**
* Retrieve default registered sidebars list.
*
* @since WP-2.2.0
* @access private
*
* @global array $wp_registered_sidebars
*
* @return array
*/
function wp_get_widget_defaults() {
global $wp_registered_sidebars;
$defaults = array();
foreach ( (array) $wp_registered_sidebars as $index => $sidebar )
$defaults[$index] = array();
return $defaults;
}
/**
* Convert the widget settings from single to multi-widget format.
*
* @since WP-2.8.0
*
* @global array $_wp_sidebars_widgets
*
* @param string $base_name
* @param string $option_name
* @param array $settings
* @return array
*/
function wp_convert_widget_settings($base_name, $option_name, $settings) {
// This test may need expanding.
$single = $changed = false;
if ( empty($settings) ) {
$single = true;
} else {
foreach ( array_keys($settings) as $number ) {
if ( 'number' == $number )
continue;
if ( !is_numeric($number) ) {
$single = true;
break;
}
}
}
if ( $single ) {
$settings = array( 2 => $settings );
// If loading from the front page, update sidebar in memory but don't save to options
if ( is_admin() ) {
$sidebars_widgets = get_option('sidebars_widgets');
} else {
if ( empty($GLOBALS['_wp_sidebars_widgets']) )
$GLOBALS['_wp_sidebars_widgets'] = get_option('sidebars_widgets', array());