jetpack-module-control / jetpack-module-control.php

jetpack-module-control.php in Module Control for Jetpack 1.3, at jetpack-module-control.php

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1	<?php
2	/*
3	* Plugin Name: Module Control for Jetpack
4	* Plugin URI: http://status301.net/wordpress-plugins/jetpack-module-control/
5	* Description: This plugin brings additional control over Jetpack modules. You can blacklist / remove individual modules, prevent auto-activation or allow activation without a WordPress.com account.
6	* Author: RavanH
7	* Author URI: http://status301.net/
8	* Network: true
9	* Text Domain: jetpack-mc
10	* Domain Path: /languages/
11	* License: GPL2+
12	* Version: 1.3
13	*/
14
15	/*
16	* ROADMAP
17	*
18	* version 2.0
19	* Replace "Prevent the Jetpack plugin from auto-activating (new) modules" with
20	* finer grained "Select which modules to auto-activate"
21	* see http://jeremy.hu/customize-the-list-of-modules-available-in-jetpack/
22	* function jeherve_auto_activate_stats() {
23	return array( 'stats' );
24	}
25	add_filter( 'jetpack_get_default_modules', 'jeherve_auto_activate_stats' );
26	*
27	* TO CONSIDER
28	*
29	* Make blacklist or whitelist optional
30	*
31	* Option to disable JUMPSTART with "Jetpack_Options::update_option( 'jumpstart', 'jumpstart_dismissed' );" ??
32	* or do we need to go through apply_filters( 'jetpack_module_feature' ...
33	* If we want to be able to select which modules should appear in Jumpstart later!
34	*
35	* Can we disable Debug link in the footer menu? No...
36	*
37	* Option to "force_deactivate" (same as blacklist?) as described on https://github.com/Automattic/jetpack/issues/1452
38	*
39	*/
40
41
42	/**
43	* Jetpack Module Control Class
44	*
45	* since 0.1
46	*/
47	class Jetpack_Module_Control {
48
49	/**
50	* The single instance.
51	* @var object
52	* @access private
53	* @since 0.1
54	*/
55	private static $instance = null;
56
57	/**
58	* The plugins basename.
59	* @var string
60	* @access private
61	* @since 0.1
62	*/
63	private static $plugin_basename = null;
64
65	/**
66	* Current plugin version.
67	* @since 0.1
68	* @var string
69	*/
70	public $version = '1.2';
71
72	/**
73	* Available modules array
74	* @since 0.1
75	* @access private
76	* @var array
77	*/
78	private static $modules = null;
79
80	/**
81	* Know modules array with names
82	* @since 0.2
83	* @access private
84	* @var array
85	*/
86	private static $known_modules = array(
87	'after-the-deadline' => array( 'name' => 'Spelling and Grammar',
88	'requires_connection' => true
89	),
90	'carousel' => array( 'name' => 'Carousel',
91	'requires_connection' => false
92	),
93	'comments' => array( 'name' => 'Jetpack Comments',
94	'requires_connection' => true
95	),
96	'contact-form' => array( 'name' => 'Contact Form',
97	'requires_connection' => false
98	),
99	'custom-content-types' => array( 'name' => 'Custom Content Types',
100	'requires_connection' => false
101	),
102	'custom-css' => array( 'name' => 'Custom CSS',
103	'requires_connection' => false
104	),
105	'enhanced-distribution' => array( 'name' => 'Enhanced Distribution',
106	'requires_connection' => true
107	),
108	'gravatar-hovercards' => array( 'name' => 'Gravatar Hovercards',
109	'requires_connection' => false
110	),
111	'infinite-scroll' => array( 'name' => 'Infinite Scroll',
112	'requires_connection' => false
113	),
114	'json-api' => array( 'name' => 'JSON API',
115	'requires_connection' => true
116	),
117	'latex' => array( 'name' => 'Beautiful Math',
118	'requires_connection' => false
119	),
120	'likes' => array( 'name' => 'Likes',
121	'requires_connection' => true
122	),
123	'manage' => array( 'name' => 'Manage',
124	'requires_connection' => true
125	),
126	'markdown' => array( 'name' => 'Markdown',
127	'requires_connection' => false
128	),
129	'minileven' => array( 'name' => 'Mobile Theme',
130	'requires_connection' => false
131	),
132	'monitor' => array( 'name' => 'Monitor',
133	'requires_connection' => true
134	),
135	'notes' => array( 'name' => 'Notifications',
136	'requires_connection' => true
137	),
138	'omnisearch' => array( 'name' => 'Omnisearch',
139	'requires_connection' => false
140	),
141	'photon' => array( 'name' => 'Photon',
142	'requires_connection' => true
143	),
144	'post-by-email' => array( 'name' => 'Post by Email',
145	'requires_connection' => true
146	),
147	'protect' => array( 'name' => 'Protect',
148	'requires_connection' => true
149	),
150	'publicize' => array( 'name' => 'Publicize',
151	'requires_connection' => true
152	),
153	'related-posts' => array( 'name' => 'Related Posts',
154	'requires_connection' => true
155	),
156	'sharedaddy' => array( 'name' => 'Sharing',
157	'requires_connection' => false
158	),
159	'shortcodes' => array( 'name' => 'Shortcode Embeds',
160	'requires_connection' => false
161	),
162	'shortlinks' => array( 'name' => 'WP.me Shortlinks',
163	'requires_connection' => true
164	),
165	'site-icon' => array( 'name' => 'Site Icon',
166	'requires_connection' => false
167	),
168	'sso' => array( 'name' => 'Jetpack Single Sign On',
169	'requires_connection' => true
170	),
171	'stats' => array( 'name' => 'WordPress.com Stats',
172	'requires_connection' => true
173	),
174	'subscriptions' => array( 'name' => 'Subscriptions',
175	'requires_connection' => true
176	),
177	'tiled-gallery' => array( 'name' => 'Tiled Galleries',
178	'requires_connection' => false
179	),
180	'vaultpress' => array( 'name' => 'VaultPress',
181	'requires_connection' => false
182	),
183	'verification-tools' => array( 'name' => 'Site Verification',
184	'requires_connection' => false
185	),
186	'videopress' => array( 'name' => 'VideoPress',
187	'requires_connection' => true
188	),
189	'widget-visibility' => array( 'name' => 'Widget Visibility',
190	'requires_connection' => false
191	),
192	'widgets' => array( 'name' => 'Extra Sidebar Widgets',
193	'requires_connection' => false
194	)
195	);
196
197	/**
198	* Know modules array with dashicons
199	* @since 0.3
200	* @access private
201	* @var array
202	*/
203	private static $known_modules_icons = array(
204	'after-the-deadline' => 'edit',
205	'carousel' => 'camera',
206	'comments' => 'format-chat',
207	'contact-form' => 'feedback',
208	'custom-content-types' => 'media-default',
209	'custom-css' => 'admin-appearance',
210	'enhanced-distribution' => 'share',
211	'gravatar-hovercards' => 'id', // not available
212	'infinite-scroll' => 'star-filled',
213	'json-api' => 'share-alt',
214	'latex' => 'star-filled',
215	'likes' => 'star-filled',
216	'manage' => 'wordpress-alt',
217	'markdown' => 'editor-code',
218	'minileven' => 'smartphone',
219	'monitor' => 'flag',
220	'notes' => 'admin-comments',
221	'omnisearch' => 'search',
222	'photon' => 'visibility',
223	'post-by-email' => 'email',
224	'protect' => 'lock',
225	'publicize' => 'share',
226	'related-posts' => 'update',
227	'sharedaddy' => 'share-alt',
228	'shortcodes' => 'text',
229	'shortlinks' => 'admin-links',
230	'site-icon' => 'admin-site',
231	'sso' => 'wordpress-alt',
232	'stats' => 'wordpress-alt',
233	'subscriptions' => 'email',
234	'tiled-gallery' => 'schedule', // not available. maybe tagcloud ?
235	'vaultpress' => 'shield-alt', // not availabe
236	'verification-tools' => 'clipboard', // maybe yes
237	'videopress' => 'controls-play',
238	'widget-visibility' => 'welcome-widgets-menus',
239	'widgets' => 'welcome-widgets-menus'
240	);
241
242	/**
243	* Default dashicon
244	* @since 1.0
245	* @access private
246	* @var string
247	*/
248	private static $default_icon = 'star-empty';
249
250	/**
251	* Return Jetpack available modules
252	* @since 0.1
253	* @return array
254	*/
255
256	private function get_available_modules() {
257	if ( null === self::$modules ) {
258	if ( class_exists('Jetpack') ) {
259	//remove_filter( 'jetpack_get_available_modules', array($this, 'blacklist') ); // remove filter useless here because of bug in Jetpack
260	$modules = array();
261	foreach ( Jetpack::get_available_modules() as $slug ) {
262	$module = Jetpack::get_module( $slug );
263	if ( $module )
264	$modules[$slug] = $module;
265	}
266	self::$modules = $modules;
267	//add_filter( 'jetpack_get_available_modules', array($this, 'blacklist') );
268	} else {
269	self::$modules = self::$known_modules;
270	}
271	}
272	return self::$modules;
273	}
274
275	/**
276	* Return plugin basename
277	*
278	* @since 0.1
279	*
280	* @return string Plugin basename
281	*/
282
283	private function plugin_basename() {
284	if ( null === self::$plugin_basename ) {
285	self::$plugin_basename = plugin_basename( __FILE__ );
286	}
287	return self::$plugin_basename;
288	}
289
290	/**
291	* MANUAL CONTROL
292	*/
293
294	/**
295	* Adds the Manual Control option
296	*
297	* @since 0.1
298	* @see get_site_option(), checked(), disabled()
299	*
300	* @uses jetpack_mc_manual_control network option
301	* @echo Html Checkbox input field for jetpack_mc_manual_control option
302	* @return void
303	*/
304
305	public function manual_control_settings() {
306
307	$cws_manual_control = class_exists('CWS_Manual_Control_for_Jetpack_Plugin') ? true : false;
308	$option = $cws_manual_control ? '1' : get_site_option('jetpack_mc_manual_control');
309	$disabled = $cws_manual_control \|\| ( defined('JETPACK_MC_LOCKDOWN') && JETPACK_MC_LOCKDOWN ) ? true : false;
310
311	?>
312	<label>
313	<input type='checkbox' name='jetpack_mc_manual_control' value='1'
314	<?php checked( $option, '1' ); ?>
315	<?php disabled( $disabled ); ?>>
316	<?php _e('Prevent the Jetpack plugin from auto-activating (new) modules.','jetpack-mc'); ?>
317	</label>
318	<p class="description"><?php echo sprintf( __('Note: The module %s will always be auto-activated.','jetpack-mc'), _x('Protect','Module Name','jetpack') ); ?></p>
319	<?php
320
321	} // END manual_control_settings()
322
323	/**
324	* Activates Manual Control by returning an empty array on module auto-activation.
325	* First modelled after Manual Control for Jetpack by Mark Jaquith http://coveredwebservices.com/
326	* To be converted to allow selected modules instead of all or none.
327	*
328	* @since 0.1
329	* @see add_filter()
330	*/
331
332	public function manual_control( $modules ) {
333
334	return get_site_option('jetpack_mc_manual_control', false) ? array() : $modules;
335
336	} // END manual_control()
337
338	/**
339	* DEVELOPMENT MODE
340	*/
341
342	/**
343	* Adds the Jetpack Without WordPress.com option
344	*
345	* @since 1.0
346	* @see get_site_option(), checked(), disabled()
347	*
348	* @echo Html Checkbox input field for jetpack_mc_development_mode option
349	* @return void
350	*/
351
352	public function development_mode_settings() {
353
354	$forced = is_plugin_active('slimjetpack/slimjetpack.php') \|\| is_plugin_active('unplug-jetpack/unplug-jetpack.php') \|\| ( defined('JETPACK_DEV_DEBUG') && JETPACK_DEV_DEBUG ) ? true : false;
355	$option = $forced ? '1' : get_site_option('jetpack_mc_development_mode');
356	$disabled = $forced \|\| ( defined('JETPACK_MC_LOCKDOWN') && JETPACK_MC_LOCKDOWN ) ? true : false;
357
358	?>
359	<label>
360	<input type='checkbox' name='jetpack_mc_development_mode' value='1'
361	<?php checked( $option, '1' ); ?>
362	<?php disabled( $disabled ); ?>>
363	<?php _e('Allow activating Jetpack modules without a WordPress.com connection.','jetpack-mc'); ?>
364	</label>
365	<p class="description"><?php _e('By forcing Jetpack into development mode, modules are used without a WordPress.com account. All modules that require a WordPress.com connection will be unavailable. These modules are marked with an asterisk (*) below. The admin message about Jetpack running in development mode will be hidden.','jetpack-mc'); ?></p>
366	<?php
367
368	} // END development_mode_settings()
369
370	/**
371	* Activates Development Mode by returning true on jetpack_development_mode filter.
372	* Based on http://jeremy.hu/customize-the-list-of-modules-available-in-jetpack/
373	*
374	* @since 1.0
375	* @see add_filter()
376	*/
377
378	public function development_mode() {
379
380	return get_site_option('jetpack_mc_development_mode', false) ? true : false;
381
382	} // END development_mode()
383
384	/**
385	* ADMIN NOTICES
386	*/
387
388	/**
389	* Disables Centralized Site Management banner by returning false on can_display_jetpack_manage_notice filter.
390	*
391	* @since 0.1
392	* @see add_filter()
393	*/
394
395	private function no_manage_notice() {
396
397	$blacklist = get_site_option('jetpack_mc_blacklist', array() );
398
399	if ( in_array('manage', (array)$blacklist ) )
400	add_filter( 'can_display_jetpack_manage_notice', '__return_false' );
401
402	} // END no_manage_notice()
403
404	/**
405	* Disables Centralized Site Management banner by returning false on can_display_jetpack_manage_notice filter.
406	*
407	* @since 0.1
408	* @see add_filter()
409	*/
410	private function no_dev_notice() {
411
412	if ( get_site_option('jetpack_mc_development_mode', false) && class_exists('Jetpack') )
413	remove_action( 'jetpack_notices', array( Jetpack::init(), 'show_development_mode_notice' ) );
414
415	} // END no_dev_notice()
416
417	/**
418	* BLACKLIST
419	*/
420
421	/**
422	* Adds a checkmark list of modules to blacklist
423	*
424	* @since 0.1
425	* @see get_site_option(), checked()
426	*
427	* @uses jetpack_mc_blacklist network option
428	* @echo Html Checkbox input field table for jetpack_mc_blacklist option
429	*/
430
431	public function blacklist_settings() {
432
433	$blacklist = get_site_option( 'jetpack_mc_blacklist', array() );
434
435	$dev_mode = get_site_option( 'jetpack_mc_development_mode' );
436
437	$modules = $this->get_available_modules();
438	asort($modules);
439
440	$icons = self::$known_modules_icons;
441
442	$lockdown = defined('JETPACK_MC_LOCKDOWN') ? JETPACK_MC_LOCKDOWN : false;
443
444	?>
445	<fieldset><legend class="screen-reader-text"><span><?php _e('Blacklist Modules','jetpack-mc'); ?></span></legend>
446	<?php
447	foreach ( $modules as $slug => $module ) {
448	$icon = isset($icons[$slug]) ? $icons[$slug] : self::$default_icon;
449	?>
450	<label>
451	<input type='checkbox' name='jetpack_mc_blacklist[]' value='<?php echo $slug; ?>'
452	<?php checked( in_array($slug,(array)$blacklist), true ); ?>
453	<?php disabled( $lockdown ); ?>>
454	<span class="dashicons dashicons-<?php echo $icon; ?>"></span> <?php _ex( $module['name'], 'Module Name', 'jetpack' ) ?>
455	</label><?php echo !empty($module['requires_connection']) && true === $module['requires_connection'] ? ' <a href="#jmc-note-1" style="text-decoration:none" title="' . __('Requires a WordPress.com connection','jetpack-mc') . '">*</a>' : ''; ?><br>
456	<?php
457	}
458	?>
459	<aside role="note" id="jmc-note-1"><p class="description"><?php _e('*) Modules marked with an asterisk require a WordPress.com connection. They will be unavailable if Jetpack is forced into development mode.','jetpack-mc'); ?></p></aside>
460	</fieldset>
461	<?php
462
463	} // END blacklist_settings()
464
465	/**
466	* Blacklist Jetpack modules
467	* Modelled after ParhamG's blacklist_jetpack_modules.php https://gist.github.com/ParhamG/6494979
468	*
469	* @since 0.1
470	* @param $modules
471	*
472	* @return Array Allowed modules after unsetting blacklisted modules from all modules array
473	*/
474
475	public function blacklist ( $modules ) {
476
477	$blacklist = get_site_option('jetpack_mc_blacklist');
478
479	foreach ( (array)$blacklist as $mod ) {
480	if ( isset( $modules[$mod] ) ) {
481	unset( $modules[$mod] );
482	}
483	}
484
485	return $modules;
486
487	} // END blacklist()
488
489	/**
490	* ADMIN
491	*/
492
493	/**
494	* Initiate plugins admin stuff
495	*
496	* @since 0.1
497	*/
498
499	public function admin_init(){
500
501	$this->no_manage_notice();
502
503	$this->no_dev_notice();
504
505	if ( is_plugin_active_for_network( $this->plugin_basename() ) ) {
506
507	add_filter( 'network_admin_plugin_action_links_' . $this->plugin_basename(), array($this, 'add_action_link') );
508
509	// Add settings to Network Settings
510	// thanks to http://zao.is/2013/07/adding-settings-to-network-settings-for-wordpress-multisite/
511	if ( is_network_admin() ) {
512	add_filter( 'wpmu_options', array( $this, 'show_network_settings' ) );
513	if ( defined('JETPACK_MC_LOCKDOWN') && JETPACK_MC_LOCKDOWN ) {
514	// do not add action to save network settings
515	} else {
516	add_action( 'update_wpmu_options', array( $this, 'save_network_settings' ) );
517	}
518	}
519
520	} else {
521
522	add_filter( 'plugin_action_links_' . $this->plugin_basename(), array($this, 'add_action_link') );
523
524	// Do regular register/add_settings stuff in 'general' settings on options-general.php
525	$settings = 'general';
526
527	add_settings_section('jetpack-mc', '<a name="jetpack-mc"></a>' . __('Jetpack Module Control','jetpack-mc'), array($this, 'add_settings_section'), $settings);
528
529	// register settings
530	if ( defined('JETPACK_MC_LOCKDOWN') && JETPACK_MC_LOCKDOWN ) {
531	// do not register settings to prevent them being updated
532	} else {
533	register_setting( $settings, 'jetpack_mc_manual_control' ); // sanitize_callback 'boolval' ?
534	register_setting( $settings, 'jetpack_mc_development_mode' ); // sanitize_callback 'boolval' ?
535	register_setting( $settings, 'jetpack_mc_blacklist', 'array_values' );
536	}
537
538	// add settings fields
539	add_settings_field( 'jetpack_mc_manual_control', __('Manual Control','jetpack-mc'), array($this, 'manual_control_settings'), $settings, 'jetpack-mc' ); // array('label_for' => 'elementid')
540	add_settings_field( 'jetpack_mc_development_mode', __('Development Mode','jetpack-mc'), array($this, 'development_mode_settings'), $settings, 'jetpack-mc' ); // array('label_for' => 'elementid')
541	add_settings_field( 'jetpack_mc_blacklist', __('Blacklist Modules','jetpack-mc'), array($this, 'blacklist_settings'), $settings, 'jetpack-mc' );
542
543	}
544
545	}
546
547	/**
548	* Saves the network settings
549	*
550	* @since 0.2
551	*/
552	public function save_network_settings() {
553
554	$posted_settings = array(
555	'jetpack_mc_manual_control' => '',
556	'jetpack_mc_development_mode' => '',
557	'jetpack_mc_blacklist' => ''
558	);
559
560	isset( $_POST['jetpack_mc_manual_control'] ) && $posted_settings['jetpack_mc_manual_control'] = '1';
561
562	isset( $_POST['jetpack_mc_development_mode'] ) && $posted_settings['jetpack_mc_development_mode'] = '1';
563
564	isset( $_POST['jetpack_mc_blacklist'] ) && is_array( $_POST['jetpack_mc_blacklist'] ) && $posted_settings['jetpack_mc_blacklist'] = array_values( $_POST['jetpack_mc_blacklist'] );
565
566	foreach( $posted_settings as $name => $value )
567	update_site_option( $name, $value );
568
569	}
570
571	/**
572	* Prints the network settings
573	*
574	* @since 0.2
575	*/
576	public function show_network_settings() {
577
578	?>
579	<h3><a name="jetpack-mc"></a><?php _e('Jetpack Module Control','jetpack-mc'); ?></h3>
580	<?php
581	$this->add_settings_section('');
582	?>
583	<table class="form-table">
584	<tbody>
585	<tr>
586	<th scope="row"><?php _e('Manual Control','jetpack-mc'); ?></th>
587	<td>
588	<?php
589	$this->manual_control_settings();
590	?>
591	</td>
592	</tr>
593	<tr>
594	<th scope="row"><?php _e('Development Mode','jetpack-mc'); ?></th>
595	<td>
596	<?php
597	$this->development_mode_settings();
598	?>
599	</td>
600	</tr>
601	<tr>
602	<th scope="row"><?php _e('Blacklist Modules','jetpack-mc'); ?></th>
603	<td>
604	<?php
605	$this->blacklist_settings();
606	?>
607	</td>
608	</tr>
609	</tbody>
610	</table>
611	<?php
612	}
613
614	/**
615	* Echos a settings section header
616	*
617	* @since 0.1
618	*
619	* @param $option (unused)
620	* @echo Html
621	*/
622	public function add_settings_section( $option ) {
623	echo '<p><a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=ravanhagen%40gmail%2ecom&item_name=Jetpack%20Module%20Control&item_number='
624	. $this->version
625	. '&no_shipping=0&tax=0&charset=UTF%2d8&currency_code=EUR" title="'
626	. __('Donate to keep plugin development going!','jetpack-mc')
627	. '"><img src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif" style="border:none;float:right;margin:5px 0 0 10px" alt="'
628	. __('Donate to keep plugin development going!','jetpack-mc') . '" width="92" height="26" /></a>'
629	. sprintf(__('The options in this section are provided by %s.','jetpack-mc'),'<strong><a href="http://status301.net/wordpress-plugins/jetpack-module-control/">'
630	. __('Jetpack Module Control','jetpack-mc') . ' ' . $this->version . '</a></strong>') . ' '
631	. __('This plugin brings additional control over Jetpack modules. You can blacklist / remove individual modules, prevent auto-activation or allow activation without a WordPress.com account.','jetpack-mc') . ' '
632	. sprintf(__('These settings can be locked down by adding %s to your wp-config.php file.','jetpack-mc'),'<code>define(\'JETPACK_MC_LOCKDOWN\', true);</code>')
633	. '</p>';
634
635	} // END add_setting_section()
636
637	/**
638	* Adds an action link on the Plugins page
639	*
640	* @since 0.1
641	* @see is_plugin_active_for_network(), admin_url(), network_admin_url()
642	*
643	* @param array $links Plugin de/activation and deletion links
644	* @return array Plugin links plus Settings link
645	*/
646	public function add_action_link( $links ) {
647	$settings_link = is_plugin_active_for_network( $this->plugin_basename() ) ?
648	'<a href="' . network_admin_url('settings.php#jetpack-mc') . '">' . translate('Network Settings') . '</a>' :
649	'<a href="' . admin_url('options-general.php#jetpack-mc') . '">' . translate('Settings') . '</a>';
650	return array_merge(
651	array( 'settings' => $settings_link ),
652	$links
653	);
654	return $links;
655	}
656
657	/**
658	* Routines to execute on plugins_loaded
659	*
660	* We need to add our jetpack_get_available_modules filter
661	* AFTER running get_available_modules() because of bug in Jetpack
662	* https://github.com/Automattic/jetpack/issues/2026
663	* https://github.com/Automattic/jetpack/pull/2027
664	*
665	* @since 0.1
666	*/
667	public function plugins_loaded() {
668	global $pagenow;
669
670	// only need translations on admin page
671	if ( is_admin() ) {
672	load_plugin_textdomain( 'jetpack-mc', false, dirname( $this->plugin_basename() ) . '/languages/' );
673
674	// populate jetpack modules list before filter is added
675	if ( in_array( $pagenow, array( 'options-general.php', 'settings.php' ) ) )
676	$this->get_available_modules();
677	}
678
679	add_filter( 'jetpack_get_default_modules', array( $this, 'manual_control' ), 99 );
680	add_filter( 'jetpack_development_mode', array( $this, 'development_mode' ) );
681	add_filter( 'jetpack_get_available_modules', array( $this, 'blacklist' ) );
682	}
683
684	/**
685	* Getter method for retrieving single object instance.
686	*
687	* @since 0.1
688	*
689	* @return Jetpack_Module_Control\|null instance object
690	*/
691	public static function instance() {
692	if(is_null(self::$instance)) {
693	self::$instance = new self();
694	}
695	return self::$instance;
696	} // End instance ()
697
698	/**
699	* Constructor
700	*
701	* @since 0.1
702	*/
703	private function __construct() {
704	add_action( 'plugins_loaded', array( $this, 'plugins_loaded' ), 0 );
705	add_action( 'admin_init', array($this,'admin_init'), 11 );
706	}
707
708	/**
709	* Cloning
710	*
711	* @since 0.1
712	*/
713	private function __clone() { }
714
715	}
716
717	Jetpack_Module_Control::instance();
718