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Jetpack – WP Security, Backup, Speed, & Growth / 7.3.3
Jetpack – WP Security, Backup, Speed, & Growth v7.3.3
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jetpack / modules / likes.php

likes.php in Jetpack – WP Security, Backup, Speed, & Growth 7.3.3, at modules/likes.php

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1 <?php
2 /**
3 * Module Name: Likes
4 * Module Description: Give visitors an easy way to show they appreciate your content.
5 * First Introduced: 2.2
6 * Sort Order: 23
7 * Requires Connection: Yes
8 * Auto Activate: No
9 * Module Tags: Social
10 * Feature: Engagement
11 * Additional Search Queries: like, likes, wordpress.com
12 */
13
14 Jetpack::dns_prefetch( array(
15 '//widgets.wp.com',
16 '//s0.wp.com',
17 '//0.gravatar.com',
18 '//1.gravatar.com',
19 '//2.gravatar.com',
20 ) );
21
22 include_once dirname( __FILE__ ) . '/likes/jetpack-likes-master-iframe.php';
23 include_once dirname( __FILE__ ) . '/likes/jetpack-likes-settings.php';
24
25 class Jetpack_Likes {
26 public static function init() {
27 static $instance = NULL;
28
29 if ( ! $instance ) {
30 $instance = new Jetpack_Likes;
31 }
32
33 return $instance;
34 }
35
36 function __construct() {
37 $this->in_jetpack = ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ? false : true;
38 $this->settings = new Jetpack_Likes_Settings();
39
40 // We need to run on wp hook rather than init because we check is_amp_endpoint()
41 // when bootstrapping hooks
42 add_action( 'wp', array( &$this, 'action_init' ), 99 );
43
44 add_action( 'admin_init', array( $this, 'admin_init' ) );
45
46 if ( $this->in_jetpack ) {
47 add_action( 'jetpack_activate_module_likes', array( $this, 'set_social_notifications_like' ) );
48 add_action( 'jetpack_deactivate_module_likes', array( $this, 'delete_social_notifications_like' ) );
49
50 Jetpack::enable_module_configurable( __FILE__ );
51 add_filter( 'jetpack_module_configuration_url_likes', array( $this, 'jetpack_likes_configuration_url' ) );
52 add_action( 'admin_print_scripts-settings_page_sharing', array( &$this, 'load_jp_css' ) );
53 add_filter( 'sharing_show_buttons_on_row_start', array( $this, 'configuration_target_area' ) );
54
55 $active = Jetpack::get_active_modules();
56
57 if ( ! in_array( 'sharedaddy', $active ) && ! in_array( 'publicize', $active ) ) {
58 // we don't have a sharing page yet
59 add_action( 'admin_menu', array( $this->settings, 'sharing_menu' ) );
60 }
61
62 if ( in_array( 'publicize', $active ) && ! in_array( 'sharedaddy', $active ) ) {
63 // we have a sharing page but not the global options area
64 add_action( 'pre_admin_screen_sharing', array( $this->settings, 'sharing_block' ), 20 );
65 add_action( 'pre_admin_screen_sharing', array( $this->settings, 'updated_message' ), -10 );
66 }
67
68 if( ! in_array( 'sharedaddy', $active ) ) {
69 add_action( 'admin_init', array( $this->settings, 'process_update_requests_if_sharedaddy_not_loaded' ) );
70 add_action( 'sharing_global_options', array( $this->settings, 'admin_settings_showbuttonon_init' ), 19 );
71 add_action( 'sharing_admin_update', array( $this->settings, 'admin_settings_showbuttonon_callback' ), 19 );
72 add_action( 'admin_init', array( $this->settings, 'add_meta_box' ) );
73 } else {
74 add_filter( 'sharing_meta_box_title', array( $this->settings, 'add_likes_to_sharing_meta_box_title' ) );
75 add_action( 'start_sharing_meta_box_content', array( $this->settings, 'meta_box_content' ) );
76 }
77 } else { // wpcom
78 add_action( 'wpmu_new_blog', array( $this, 'enable_comment_likes' ), 10, 1 );
79 add_action( 'admin_init', array( $this->settings, 'add_meta_box' ) );
80 add_action( 'end_likes_meta_box_content', array( $this->settings, 'sharing_meta_box_content' ) );
81 add_filter( 'likes_meta_box_title', array( $this->settings, 'add_likes_to_sharing_meta_box_title' ) );
82 }
83
84 add_action( 'admin_init', array( $this, 'admin_discussion_likes_settings_init' ) ); // Likes notifications
85
86 add_action( 'admin_bar_menu', array( $this, 'admin_bar_likes' ), 60 );
87
88 add_action( 'wp_enqueue_scripts', array( $this, 'load_styles_register_scripts' ) );
89
90 add_action( 'save_post', array( $this->settings, 'meta_box_save' ) );
91 add_action( 'edit_attachment', array( $this->settings, 'meta_box_save' ) );
92 add_action( 'sharing_global_options', array( $this->settings, 'admin_settings_init' ), 20 );
93 add_action( 'sharing_admin_update', array( $this->settings, 'admin_settings_callback' ), 20 );
94 }
95
96 /**
97 * Set the social_notifications_like option to `on` when the Likes module is activated.
98 *
99 * @since 3.7.0
100 *
101 * @return null
102 */
103 function set_social_notifications_like() {
104 update_option( 'social_notifications_like', 'on' );
105 }
106
107 /**
108 * Delete the social_notifications_like option that was set to `on` on module activation.
109 *
110 * @since 3.7.0
111 *
112 * @return null
113 */
114 function delete_social_notifications_like() {
115 delete_option( 'social_notifications_like' );
116 }
117
118
119 /**
120 * Overrides default configuration url
121 *
122 * @uses admin_url
123 * @return string module settings URL
124 */
125 function jetpack_likes_configuration_url() {
126 return admin_url( 'options-general.php?page=sharing#likes' );
127 }
128
129 /**
130 * Loads Jetpack's CSS on the sharing page so we can use .jetpack-targetable
131 */
132 function load_jp_css() {
133 // Do we really need `admin_styles`? With the new admin UI, it's breaking some bits.
134 // Jetpack::init()->admin_styles();
135 }
136
137 /**
138 * Load scripts and styles for front end.
139 * @return null
140 */
141 function load_styles_register_scripts() {
142 if ( $this->in_jetpack ) {
143 wp_enqueue_style( 'jetpack_likes', plugins_url( 'likes/style.css', __FILE__ ), array(), JETPACK__VERSION );
144 $this->register_scripts();
145 }
146 }
147
148
149 /**
150 * Stub for is_post_likeable, since some wpcom functions call this directly on the class
151 * Are likes enabled for this post?
152 *
153 * @param int $post_id
154 * @return bool
155 */
156 static function is_post_likeable( $post_id = 0 ) {
157 _deprecated_function( __METHOD__, 'jetpack-5.4', 'Jetpack_Likes_Settings()->is_post_likeable' );
158 $settings = new Jetpack_Likes_Settings();
159 return $settings->is_post_likeable();
160 }
161
162 /**
163 * Stub for is_likes_visible, since some themes were calling it directly from this class
164 *
165 * @deprecated 5.4
166 * @return bool
167 */
168 function is_likes_visible() {
169 _deprecated_function( __METHOD__, 'jetpack-5.4', 'Jetpack_Likes_Settings()->is_likes_visible' );
170
171 $settings = new Jetpack_Likes_Settings();
172 return $settings->is_likes_visible();
173 }
174
175 /**
176 * Adds in the jetpack-targetable class so when we visit sharing#likes our like settings get highlighted by a yellow box
177 * @param string $html row heading for the sharedaddy "which page" setting
178 * @return string html with the jetpack-targetable class and likes id. tbody gets closed after the like settings
179 */
180 function configuration_target_area( $html = '' ) {
181 $html = "<tbody id='likes' class='jetpack-targetable'>" . $html;
182 return $html;
183 }
184
185 /**
186 * Options to be added to the discussion page (see also admin_settings_init, etc below for Sharing settings page)
187 */
188
189 function admin_discussion_likes_settings_init() {
190 // Add a temporary section, until we can move the setting out of there and with the rest of the email notification settings
191 add_settings_section( 'likes-notifications', __( 'Likes Notifications', 'jetpack' ), array( $this, 'admin_discussion_likes_settings_section' ), 'discussion' );
192 add_settings_field( 'social-notifications', __( 'Email me whenever', 'jetpack' ), array( $this, 'admin_discussion_likes_settings_field' ), 'discussion', 'likes-notifications' );
193 // Register the setting
194 register_setting( 'discussion', 'social_notifications_like', array( $this, 'admin_discussion_likes_settings_validate' ) );
195 }
196
197 function admin_discussion_likes_settings_section() {
198 // Atypical usage here. We emit jquery to move likes notification checkbox to be with the rest of the email notification settings
199 ?>
200 <script type="text/javascript">
201 jQuery( function( $ ) {
202 var table = $( '#social_notifications_like' ).parents( 'table:first' ),
203 header = table.prevAll( 'h2:first' ),
204 newParent = $( '#moderation_notify' ).parent( 'label' ).parent();
205
206 if ( !table.length || !header.length || !newParent.length ) {
207 return;
208 }
209
210 newParent.append( '<br/>' ).append( table.end().parent( 'label' ).siblings().andSelf() );
211 header.remove();
212 table.remove();
213 } );
214 </script>
215 <?php
216 }
217
218 function admin_likes_get_option( $option ) {
219 if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
220 $option_setting = get_blog_option( get_current_blog_id(), $option, 'on' );
221 } else {
222 $option_setting = get_option( $option, 'on' );
223 }
224
225 return intval( 'on' == $option_setting );
226 }
227
228 function admin_discussion_likes_settings_field() {
229 $like = $this->admin_likes_get_option( 'social_notifications_like' );
230 ?>
231 <label><input type="checkbox" id="social_notifications_like" name="social_notifications_like" value="1" <?php checked( $like ); ?> /> <?php esc_html_e( 'Someone likes one of my posts', 'jetpack' ); ?></label>
232 <?php
233 }
234
235 function admin_discussion_likes_settings_validate( $input ) {
236 // If it's not set (was unchecked during form submission) or was set to off (during option update), return 'off'.
237 if ( !$input || 'off' == $input )
238 return 'off';
239
240 // Otherwise, return 'on'.
241 return 'on';
242 }
243
244 function admin_init() {
245 add_filter( 'manage_posts_columns', array( $this, 'add_like_count_column' ) );
246 add_filter( 'manage_pages_columns', array( $this, 'add_like_count_column' ) );
247 add_action( 'manage_posts_custom_column', array( $this, 'likes_edit_column' ), 10, 2 );
248 add_action( 'manage_pages_custom_column', array( $this, 'likes_edit_column' ), 10, 2 );
249 add_action( 'admin_print_styles-edit.php', array( $this, 'load_admin_css' ) );
250 add_action( "admin_print_scripts-edit.php", array( $this, 'enqueue_admin_scripts' ) );
251 }
252
253 function action_init() {
254 if ( is_admin() ) {
255 return;
256 }
257
258 if ( ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) ||
259 ( defined( 'APP_REQUEST' ) && APP_REQUEST ) ||
260 ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) ||
261 ( defined( 'COOKIE_AUTH_REQUEST' ) && COOKIE_AUTH_REQUEST ) ||
262 ( defined( 'JABBER_SERVER' ) && JABBER_SERVER ) ) {
263 return;
264 }
265
266 if (
267 class_exists( 'Jetpack_AMP_Support' )
268 && Jetpack_AMP_Support::is_amp_request()
269 ) {
270 return;
271 }
272
273 if ( $this->in_jetpack ) {
274 add_filter( 'the_content', array( &$this, 'post_likes' ), 30, 1 );
275 add_filter( 'the_excerpt', array( &$this, 'post_likes' ), 30, 1 );
276
277 } else {
278 add_filter( 'post_flair', array( &$this, 'post_likes' ), 30, 1 );
279 add_filter( 'post_flair_block_css', array( $this, 'post_flair_service_enabled_like' ) );
280
281 wp_enqueue_script( 'postmessage', '/wp-content/js/postmessage.js', array( 'jquery' ), JETPACK__VERSION, false );
282 wp_enqueue_script( 'jetpack_resize', '/wp-content/js/jquery/jquery.jetpack-resize.js', array( 'jquery' ), JETPACK__VERSION, false );
283 wp_enqueue_script( 'jetpack_likes_queuehandler', plugins_url( 'queuehandler.js' , __FILE__ ), array( 'jquery', 'postmessage', 'jetpack_resize' ), JETPACK__VERSION, true );
284 wp_enqueue_style( 'jetpack_likes', plugins_url( 'jetpack-likes.css', __FILE__ ), array(), JETPACK__VERSION );
285 }
286 }
287
288 /**
289 * Register scripts
290 */
291 function register_scripts() {
292 wp_register_script(
293 'postmessage',
294 Jetpack::get_file_url_for_environment( '_inc/build/postmessage.min.js', '_inc/postmessage.js' ),
295 array( 'jquery' ),
296 JETPACK__VERSION,
297 false
298 );
299 wp_register_script(
300 'jetpack_resize',
301 Jetpack::get_file_url_for_environment(
302 '_inc/build/jquery.jetpack-resize.min.js',
303 '_inc/jquery.jetpack-resize.js'
304 ),
305 array( 'jquery' ),
306 JETPACK__VERSION,
307 false
308 );
309 wp_register_script(
310 'jetpack_likes_queuehandler',
311 Jetpack::get_file_url_for_environment(
312 '_inc/build/likes/queuehandler.min.js',
313 'modules/likes/queuehandler.js'
314 ),
315 array( 'jquery', 'postmessage', 'jetpack_resize' ),
316 JETPACK__VERSION,
317 true
318 );
319 }
320
321 /**
322 * Load the CSS needed for the wp-admin area.
323 */
324 function load_admin_css() {
325 ?>
326 <style type="text/css">
327 .vers img { display: none; }
328 .metabox-prefs .vers img { display: inline; }
329 .fixed .column-likes { width: 5.5em; padding: 8px 0; text-align: left; }
330 .fixed .column-stats { width: 5em; }
331 .fixed .column-likes .post-com-count {
332 -webkit-box-sizing: border-box;
333 -moz-box-sizing: border-box;
334 box-sizing: border-box;
335 display: inline-block;
336 padding: 0 8px;
337 height: 2em;
338 margin-top: 5px;
339 -webkit-border-radius: 5px;
340 border-radius: 5px;
341 background-color: #72777C;
342 color: #FFF;
343 font-size: 11px;
344 line-height: 21px;
345 }
346 .fixed .column-likes .post-com-count::after { border: none !important; }
347 .fixed .column-likes .post-com-count:hover { background-color: #0073AA; }
348 .fixed .column-likes .vers:before {
349 font: normal 20px/1 dashicons;
350 content: '\f155';
351 speak: none;
352 -webkit-font-smoothing: antialiased;
353 -moz-osx-font-smoothing: grayscale;
354 }
355 @media screen and (max-width: 782px) {
356 .fixed .column-likes {
357 display: none;
358 }
359 }
360 </style>
361 <?php
362 }
363
364 /**
365 * Load the JS required for loading the like counts.
366 */
367 function enqueue_admin_scripts() {
368 if ( empty( $_GET['post_type'] ) || 'post' == $_GET['post_type'] || 'page' == $_GET['post_type'] ) {
369 if ( $this->in_jetpack ) {
370 wp_enqueue_script(
371 'likes-post-count',
372 Jetpack::get_file_url_for_environment(
373 '_inc/build/likes/post-count.min.js',
374 'modules/likes/post-count.js'
375 ),
376 array( 'jquery' ),
377 JETPACK__VERSION
378 );
379 wp_enqueue_script(
380 'likes-post-count-jetpack',
381 Jetpack::get_file_url_for_environment(
382 '_inc/build/likes/post-count-jetpack.min.js',
383 'modules/likes/post-count-jetpack.js'
384 ),
385 array( 'likes-post-count' ),
386 JETPACK__VERSION
387 );
388 } else {
389 wp_enqueue_script( 'jquery.wpcom-proxy-request', "/wp-content/js/jquery/jquery.wpcom-proxy-request.js", array('jquery'), NULL, true );
390 wp_enqueue_script( 'likes-post-count', plugins_url( 'likes/post-count.js', dirname( __FILE__ ) ), array( 'jquery' ), JETPACK__VERSION );
391 wp_enqueue_script( 'likes-post-count-wpcom', plugins_url( 'likes/post-count-wpcom.js', dirname( __FILE__ ) ), array( 'likes-post-count', 'jquery.wpcom-proxy-request' ), JETPACK__VERSION );
392 }
393 }
394 }
395
396 /**
397 * Add "Likes" column data to the post edit table in wp-admin.
398 *
399 * @param string $column_name
400 * @param int $post_id
401 */
402 function likes_edit_column( $column_name, $post_id ) {
403 if ( 'likes' == $column_name ) {
404
405 if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
406 $blog_id = get_current_blog_id();
407 } else {
408 $blog_id = Jetpack_Options::get_option( 'id' );
409 }
410
411 $permalink = get_permalink( get_the_ID() ); ?>
412 <a title="" data-post-id="<?php echo (int) $post_id; ?>" class="post-com-count post-like-count" id="post-like-count-<?php echo (int) $post_id; ?>" data-blog-id="<?php echo (int) $blog_id; ?>" href="<?php echo esc_url( $permalink ); ?>#like-<?php echo (int) $post_id; ?>">
413 <span class="comment-count">0</span>
414 </a>
415 <?php
416 }
417 }
418
419 /**
420 * Add a "Likes" column header to the post edit table in wp-admin.
421 *
422 * @param array $columns
423 * @return array
424 */
425 function add_like_count_column( $columns ) {
426 $date = $columns['date'];
427 unset( $columns['date'] );
428
429 $columns['likes'] = '<span class="vers"><img title="' . esc_attr__( 'Likes', 'jetpack' ) . '" alt="' . esc_attr__( 'Likes', 'jetpack' ) . '" src="//s0.wordpress.com/i/like-grey-icon.png" /><span class="screen-reader-text">' . __( 'Likes', 'jetpack' ) . '</span></span>';
430 $columns['date'] = $date;
431
432 return $columns;
433 }
434
435 function post_likes( $content ) {
436 $post_id = get_the_ID();
437
438 if ( ! is_numeric( $post_id ) || ! $this->settings->is_likes_visible() )
439 return $content;
440
441 if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
442 $blog_id = get_current_blog_id();
443 $bloginfo = get_blog_details( (int) $blog_id );
444 $domain = $bloginfo->domain;
445 } else {
446 $blog_id = Jetpack_Options::get_option( 'id' );
447 $url = home_url();
448 $url_parts = wp_parse_url( $url );
449 $domain = $url_parts['host'];
450 }
451 // make sure to include the scripts before the iframe otherwise weird things happen
452 add_action( 'wp_footer', 'jetpack_likes_master_iframe', 21 );
453
454 /**
455 * if the same post appears more then once on a page the page goes crazy
456 * we need a slightly more unique id / name for the widget wrapper.
457 */
458 $uniqid = uniqid();
459
460 $src = sprintf( 'https://widgets.wp.com/likes/#blog_id=%1$d&amp;post_id=%2$d&amp;origin=%3$s&amp;obj_id=%1$d-%2$d-%4$s', $blog_id, $post_id, $domain, $uniqid );
461 $name = sprintf( 'like-post-frame-%1$d-%2$d-%3$s', $blog_id, $post_id, $uniqid );
462 $wrapper = sprintf( 'like-post-wrapper-%1$d-%2$d-%3$s', $blog_id, $post_id, $uniqid );
463 $headline = sprintf(
464 /** This filter is already documented in modules/sharedaddy/sharing-service.php */
465 apply_filters( 'jetpack_sharing_headline_html', '<h3 class="sd-title">%s</h3>', esc_html__( 'Like this:', 'jetpack' ), 'likes' ),
466 esc_html__( 'Like this:', 'jetpack' )
467 );
468
469 $html = "<div class='sharedaddy sd-block sd-like jetpack-likes-widget-wrapper jetpack-likes-widget-unloaded' id='$wrapper' data-src='$src' data-name='$name'>";
470 $html .= $headline;
471 $html .= "<div class='likes-widget-placeholder post-likes-widget-placeholder' style='height: 55px;'><span class='button'><span>" . esc_html__( 'Like', 'jetpack' ) . '</span></span> <span class="loading">' . esc_html__( 'Loading...', 'jetpack' ) . '</span></div>';
472 $html .= "<span class='sd-text-color'></span><a class='sd-link-color'></a>";
473 $html .= '</div>';
474
475 // Let's make sure that the script is enqueued
476 wp_enqueue_script( 'jetpack_likes_queuehandler' );
477
478 return $content . $html;
479 }
480
481 function post_flair_service_enabled_like( $classes ) {
482 $classes[] = 'sd-like-enabled';
483 return $classes;
484 }
485
486 function is_admin_bar_button_visible() {
487 global $wp_admin_bar;
488
489 if ( ! is_object( $wp_admin_bar ) )
490 return false;
491
492 if ( ( ! is_singular( 'post' ) && ! is_attachment() && ! is_page() ) )
493 return false;
494
495 if ( ! $this->settings->is_likes_visible() )
496 return false;
497
498 if ( ! $this->settings->is_post_likeable() )
499 return false;
500
501 /**
502 * Filters whether the Like button is enabled in the admin bar.
503 *
504 * @module likes
505 *
506 * @since 2.2.0
507 *
508 * @param bool true Should the Like button be visible in the Admin bar. Default to true.
509 */
510 return (bool) apply_filters( 'jetpack_admin_bar_likes_enabled', true );
511 }
512
513 function admin_bar_likes() {
514 global $wp_admin_bar;
515
516 $post_id = get_the_ID();
517
518 if ( ! is_numeric( $post_id ) || ! $this->is_admin_bar_button_visible() ) {
519 return;
520 }
521
522 $protocol = 'http';
523 if ( is_ssl() )
524 $protocol = 'https';
525
526 if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
527 $blog_id = get_current_blog_id();
528 $bloginfo = get_blog_details( (int) $blog_id );
529 $domain = $bloginfo->domain;
530 } else {
531 $blog_id = Jetpack_Options::get_option( 'id' );
532 $url = home_url();
533 $url_parts = wp_parse_url( $url );
534 $domain = $url_parts['host'];
535 }
536 // make sure to include the scripts before the iframe otherwise weird things happen
537 add_action( 'wp_footer', 'jetpack_likes_master_iframe', 21 );
538
539 $src = sprintf( 'https://widgets.wp.com/likes/#blog_id=%2$d&amp;post_id=%3$d&amp;origin=%1$s://%4$s', $protocol, $blog_id, $post_id, $domain );
540
541 $html = "<iframe class='admin-bar-likes-widget jetpack-likes-widget' scrolling='no' frameBorder='0' name='admin-bar-likes-widget' src='$src'></iframe>";
542
543 $node = array(
544 'id' => 'admin-bar-likes-widget',
545 'meta' => array(
546 'html' => $html
547 )
548 );
549
550 $wp_admin_bar->add_node( $node );
551 }
552 }
553
554 /**
555 * Callback to get the value for the jetpack_likes_enabled field.
556 *
557 * Warning: this behavior is somewhat complicated!
558 * When the switch_like_status post_meta is unset, we follow the global setting in Sharing.
559 * When it is set to 0, we disable likes on the post, regardless of the global setting.
560 * When it is set to 1, we enable likes on the post, regardless of the global setting.
561 */
562 function jetpack_post_likes_get_value( array $post ) {
563 $post_likes_switched = get_post_meta( $post['id'], 'switch_like_status', true );
564
565 /** This filter is documented in modules/jetpack-likes-settings.php */
566 $sitewide_likes_enabled = (bool) apply_filters( 'wpl_is_enabled_sitewide', ! get_option( 'disabled_likes' ) );
567
568 // an empty string: post meta was not set, so go with the global setting
569 if ( "" === $post_likes_switched ) {
570 return $sitewide_likes_enabled;
571 }
572
573 // user overrode the global setting to disable likes
574 elseif ( "0" === $post_likes_switched ) {
575 return false;
576 }
577
578 // user overrode the global setting to enable likes
579 elseif ( "1" === $post_likes_switched ) {
580 return true;
581 }
582
583 // no default fallback, let's stay explicit
584 }
585
586 /**
587 * Callback to set switch_like_status post_meta when jetpack_likes_enabled is updated.
588 *
589 * Warning: this behavior is somewhat complicated!
590 * When the switch_like_status post_meta is unset, we follow the global setting in Sharing.
591 * When it is set to 0, we disable likes on the post, regardless of the global setting.
592 * When it is set to 1, we enable likes on the post, regardless of the global setting.
593 */
594 function jetpack_post_likes_update_value( $enable_post_likes, $post_object ) {
595 /** This filter is documented in modules/jetpack-likes-settings.php */
596 $sitewide_likes_enabled = (bool) apply_filters( 'wpl_is_enabled_sitewide', ! get_option( 'disabled_likes' ) );
597
598 $should_switch_status = $enable_post_likes !== $sitewide_likes_enabled;
599
600 if ( $should_switch_status ) {
601 // set the meta to 0 if the user wants to disable likes, 1 if user wants to enable
602 $switch_like_status = ( $enable_post_likes ? 1 : 0 );
603 return update_post_meta( $post_object->ID, 'switch_like_status', $switch_like_status );
604 } else {
605 // unset the meta otherwise
606 return delete_post_meta( $post_object->ID, 'switch_like_status' );
607 }
608 }
609
610 /**
611 * Add Likes post_meta to the REST API Post response.
612 *
613 * @action rest_api_init
614 * @uses register_rest_field
615 * @link https://developer.wordpress.org/rest-api/extending-the-rest-api/modifying-responses/
616 */
617 function jetpack_post_likes_register_rest_field() {
618 $post_types = get_post_types( array( 'public' => true ) );
619 foreach ( $post_types as $post_type ) {
620 register_rest_field(
621 $post_type,
622 'jetpack_likes_enabled',
623 array(
624 'get_callback' => 'jetpack_post_likes_get_value',
625 'update_callback' => 'jetpack_post_likes_update_value',
626 'schema' => array(
627 'description' => __( 'Are Likes enabled?', 'jetpack' ),
628 'type' => 'boolean',
629 ),
630 )
631 );
632
633 /**
634 * Ensures all public internal post-types support `likes`
635 * This feature support flag is used by the REST API and Gutenberg.
636 */
637 add_post_type_support( $post_type, 'jetpack-post-likes' );
638 }
639 }
640
641 // Add Likes post_meta to the REST API Post response.
642 add_action( 'rest_api_init', 'jetpack_post_likes_register_rest_field' );
643
644 // Some CPTs (e.g. Jetpack portfolios and testimonials) get registered with
645 // restapi_theme_init because they depend on theme support, so let's also hook to that
646 add_action( 'restapi_theme_init', 'jetpack_post_likes_register_rest_field', 20 );
647
648 /**
649 * Set the Likes and Sharing Gutenberg extension availability
650 */
651 function jetpack_post_likes_set_extension_availability() {
652 Jetpack_Gutenberg::set_extension_available( 'likes' );
653 }
654
655 add_action( 'jetpack_register_gutenberg_extensions', 'jetpack_post_likes_set_extension_availability' );
656
657 Jetpack_Likes::init();
658