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<?php
/**
* Module Name: Likes
* Module Description: Give visitors an easy way to show they appreciate your content.
* First Introduced: 2.2
* Sort Order: 23
* Requires Connection: Yes
* Auto Activate: No
* Module Tags: Social
* Feature: Engagement
* Additional Search Queries: like, likes, wordpress.com
*/
use Automattic\Jetpack\Assets;
Assets::add_resource_hint(
array(
'//widgets.wp.com',
'//s0.wp.com',
'//0.gravatar.com',
'//1.gravatar.com',
'//2.gravatar.com',
),
'dns-prefetch'
);
include_once dirname( __FILE__ ) . '/likes/jetpack-likes-master-iframe.php';
include_once dirname( __FILE__ ) . '/likes/jetpack-likes-settings.php';
class Jetpack_Likes {
public static function init() {
static $instance = NULL;
if ( ! $instance ) {
$instance = new Jetpack_Likes();
}
return $instance;
}
function __construct() {
$this->in_jetpack = ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ? false : true;
$this->settings = new Jetpack_Likes_Settings();
// We need to run on wp hook rather than init because we check is_amp_endpoint()
// when bootstrapping hooks
add_action( 'wp', array( &$this, 'action_init' ), 99 );
add_action( 'admin_init', array( $this, 'admin_init' ) );
if ( $this->in_jetpack ) {
add_action( 'jetpack_activate_module_likes', array( $this, 'set_social_notifications_like' ) );
add_action( 'jetpack_deactivate_module_likes', array( $this, 'delete_social_notifications_like' ) );
Jetpack::enable_module_configurable( __FILE__ );
add_filter( 'jetpack_module_configuration_url_likes', array( $this, 'jetpack_likes_configuration_url' ) );
add_action( 'admin_print_scripts-settings_page_sharing', array( &$this, 'load_jp_css' ) );
add_filter( 'sharing_show_buttons_on_row_start', array( $this, 'configuration_target_area' ) );
$active = Jetpack::get_active_modules();
if ( ! in_array( 'sharedaddy', $active ) && ! in_array( 'publicize', $active ) ) {
// we don't have a sharing page yet
add_action( 'admin_menu', array( $this->settings, 'sharing_menu' ) );
}
if ( in_array( 'publicize', $active ) && ! in_array( 'sharedaddy', $active ) ) {
// we have a sharing page but not the global options area
add_action( 'pre_admin_screen_sharing', array( $this->settings, 'sharing_block' ), 20 );
add_action( 'pre_admin_screen_sharing', array( $this->settings, 'updated_message' ), -10 );
}
if( ! in_array( 'sharedaddy', $active ) ) {
add_action( 'admin_init', array( $this->settings, 'process_update_requests_if_sharedaddy_not_loaded' ) );
add_action( 'sharing_global_options', array( $this->settings, 'admin_settings_showbuttonon_init' ), 19 );
add_action( 'sharing_admin_update', array( $this->settings, 'admin_settings_showbuttonon_callback' ), 19 );
add_action( 'admin_init', array( $this->settings, 'add_meta_box' ) );
} else {
add_filter( 'sharing_meta_box_title', array( $this->settings, 'add_likes_to_sharing_meta_box_title' ) );
add_action( 'start_sharing_meta_box_content', array( $this->settings, 'meta_box_content' ) );
}
} else { // wpcom
add_action( 'wpmu_new_blog', array( $this, 'enable_comment_likes' ), 10, 1 );
add_action( 'admin_init', array( $this->settings, 'add_meta_box' ) );
add_action( 'end_likes_meta_box_content', array( $this->settings, 'sharing_meta_box_content' ) );
add_filter( 'likes_meta_box_title', array( $this->settings, 'add_likes_to_sharing_meta_box_title' ) );
}
add_action( 'admin_init', array( $this, 'admin_discussion_likes_settings_init' ) ); // Likes notifications
add_action( 'admin_bar_menu', array( $this, 'admin_bar_likes' ), 60 );
add_action( 'wp_enqueue_scripts', array( $this, 'load_styles_register_scripts' ) );
add_action( 'save_post', array( $this->settings, 'meta_box_save' ) );
add_action( 'edit_attachment', array( $this->settings, 'meta_box_save' ) );
add_action( 'sharing_global_options', array( $this->settings, 'admin_settings_init' ), 20 );
add_action( 'sharing_admin_update', array( $this->settings, 'admin_settings_callback' ), 20 );
}
/**
* Set the social_notifications_like option to `on` when the Likes module is activated.
*
* @since 3.7.0
*
* @return null
*/
function set_social_notifications_like() {
update_option( 'social_notifications_like', 'on' );
}
/**
* Delete the social_notifications_like option that was set to `on` on module activation.
*
* @since 3.7.0
*
* @return null
*/
function delete_social_notifications_like() {
delete_option( 'social_notifications_like' );
}
/**
* Overrides default configuration url
*
* @uses admin_url
* @return string module settings URL
*/
function jetpack_likes_configuration_url() {
return admin_url( 'options-general.php?page=sharing#likes' );
}
/**
* Loads Jetpack's CSS on the sharing page so we can use .jetpack-targetable
*/
function load_jp_css() {
// Do we really need `admin_styles`? With the new admin UI, it's breaking some bits.
// Jetpack::init()->admin_styles();
}
/**
* Load scripts and styles for front end.
* @return null
*/
function load_styles_register_scripts() {
if ( $this->in_jetpack ) {
wp_enqueue_style( 'jetpack_likes', plugins_url( 'likes/style.css', __FILE__ ), array(), JETPACK__VERSION );
$this->register_scripts();
}
}
/**
* Stub for is_post_likeable, since some wpcom functions call this directly on the class
* Are likes enabled for this post?
*
* @param int $post_id
* @return bool
*/
static function is_post_likeable( $post_id = 0 ) {
_deprecated_function( __METHOD__, 'jetpack-5.4', 'Jetpack_Likes_Settings()->is_post_likeable' );
$settings = new Jetpack_Likes_Settings();
return $settings->is_post_likeable( $post_id );
}
/**
* Stub for is_likes_visible, since some themes were calling it directly from this class
*
* @deprecated 5.4
* @return bool
*/
function is_likes_visible() {
_deprecated_function( __METHOD__, 'jetpack-5.4', 'Jetpack_Likes_Settings()->is_likes_visible' );
$settings = new Jetpack_Likes_Settings();
return $settings->is_likes_visible();
}
/**
* Adds in the jetpack-targetable class so when we visit sharing#likes our like settings get highlighted by a yellow box
* @param string $html row heading for the sharedaddy "which page" setting
* @return string html with the jetpack-targetable class and likes id. tbody gets closed after the like settings
*/
function configuration_target_area( $html = '' ) {
$html = "<tbody id='likes' class='jetpack-targetable'>" . $html;
return $html;
}
/**
* Options to be added to the discussion page (see also admin_settings_init, etc below for Sharing settings page)
*/
function admin_discussion_likes_settings_init() {
// Add a temporary section, until we can move the setting out of there and with the rest of the email notification settings
add_settings_section( 'likes-notifications', __( 'Likes Notifications', 'jetpack' ), array( $this, 'admin_discussion_likes_settings_section' ), 'discussion' );
add_settings_field( 'social-notifications', __( 'Email me whenever', 'jetpack' ), array( $this, 'admin_discussion_likes_settings_field' ), 'discussion', 'likes-notifications' );
// Register the setting
register_setting( 'discussion', 'social_notifications_like', array( $this, 'admin_discussion_likes_settings_validate' ) );
}
function admin_discussion_likes_settings_section() {
// Atypical usage here. We emit jquery to move likes notification checkbox to be with the rest of the email notification settings
?>
<script type="text/javascript">
jQuery( function( $ ) {
var table = $( '#social_notifications_like' ).parents( 'table:first' ),
header = table.prevAll( 'h2:first' ),
newParent = $( '#moderation_notify' ).parent( 'label' ).parent();
if ( !table.length || !header.length || !newParent.length ) {
return;
}
newParent.append( '<br/>' ).append( table.end().parent( 'label' ).siblings().andSelf() );
header.remove();
table.remove();
} );
</script>
<?php
}
function admin_likes_get_option( $option ) {
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
$option_setting = get_blog_option( get_current_blog_id(), $option, 'on' );
} else {
$option_setting = get_option( $option, 'on' );
}
return (int) ( 'on' == $option_setting );
}
function admin_discussion_likes_settings_field() {
$like = $this->admin_likes_get_option( 'social_notifications_like' );
?>
<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>
<?php
}
function admin_discussion_likes_settings_validate( $input ) {
// If it's not set (was unchecked during form submission) or was set to off (during option update), return 'off'.
if ( !$input || 'off' == $input )
return 'off';
// Otherwise, return 'on'.
return 'on';
}
function admin_init() {
add_filter( 'manage_posts_columns', array( $this, 'add_like_count_column' ) );
add_filter( 'manage_pages_columns', array( $this, 'add_like_count_column' ) );
add_action( 'manage_posts_custom_column', array( $this, 'likes_edit_column' ), 10, 2 );
add_action( 'manage_pages_custom_column', array( $this, 'likes_edit_column' ), 10, 2 );
add_action( 'admin_print_styles-edit.php', array( $this, 'load_admin_css' ) );
add_action( "admin_print_scripts-edit.php", array( $this, 'enqueue_admin_scripts' ) );
}
function action_init() {
if ( is_admin() || ! $this->settings->is_likes_visible() ) {
return;
}
if ( ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) ||
( defined( 'APP_REQUEST' ) && APP_REQUEST ) ||
( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) ||
( defined( 'COOKIE_AUTH_REQUEST' ) && COOKIE_AUTH_REQUEST ) ||
( defined( 'JABBER_SERVER' ) && JABBER_SERVER ) ) {
return;
}
if (
class_exists( 'Jetpack_AMP_Support' )
&& Jetpack_AMP_Support::is_amp_request()
) {
return;
}
if ( $this->in_jetpack ) {
add_filter( 'the_content', array( &$this, 'post_likes' ), 30, 1 );
add_filter( 'the_excerpt', array( &$this, 'post_likes' ), 30, 1 );
} else {
add_filter( 'post_flair', array( &$this, 'post_likes' ), 30, 1 );
add_filter( 'post_flair_block_css', array( $this, 'post_flair_service_enabled_like' ) );
wp_enqueue_script( 'postmessage', '/wp-content/js/postmessage.js', array(), JETPACK__VERSION, true );
wp_enqueue_script( 'jetpack_resize', '/wp-content/js/jquery/jquery.jetpack-resize.js', array( 'jquery' ), JETPACK__VERSION, true );
wp_enqueue_script( 'jetpack_likes_queuehandler', plugins_url( 'queuehandler.js' , __FILE__ ), array( 'jquery', 'postmessage', 'jetpack_resize' ), JETPACK__VERSION, true );
wp_enqueue_style( 'jetpack_likes', plugins_url( 'jetpack-likes.css', __FILE__ ), array(), JETPACK__VERSION );
}
}
/**
* Register scripts
*/
function register_scripts() {
wp_register_script(
'postmessage',
Assets::get_file_url_for_environment( '_inc/build/postmessage.min.js', '_inc/postmessage.js' ),
array(),
JETPACK__VERSION,
true
);
wp_register_script(
'jetpack_resize',
Assets::get_file_url_for_environment(
'_inc/build/jquery.jetpack-resize.min.js',
'_inc/jquery.jetpack-resize.js'
),
array( 'jquery' ),
JETPACK__VERSION,
true
);
wp_register_script(
'jetpack_likes_queuehandler',
Assets::get_file_url_for_environment(
'_inc/build/likes/queuehandler.min.js',
'modules/likes/queuehandler.js'
),
array( 'jquery', 'postmessage', 'jetpack_resize' ),
JETPACK__VERSION,
true
);
}
/**
* Load the CSS needed for the wp-admin area.
*/
function load_admin_css() {
?>
<style type="text/css">
.vers img { display: none; }
.metabox-prefs .vers img { display: inline; }
.fixed .column-likes { width: 5.5em; padding: 8px 0; text-align: left; }
.fixed .column-stats { width: 5em; }
.fixed .column-likes .post-com-count {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
display: inline-block;
padding: 0 8px;
height: 2em;
margin-top: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;
background-color: #72777C;
color: #FFF;
font-size: 11px;
line-height: 21px;
}
.fixed .column-likes .post-com-count::after { border: none !important; }
.fixed .column-likes .post-com-count:hover { background-color: #0073AA; }
.fixed .column-likes .vers:before {
font: normal 20px/1 dashicons;
content: '\f155';
speak: none;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
@media screen and (max-width: 782px) {
.fixed .column-likes {
display: none;
}
}
</style>
<?php
}
/**
* Load the JS required for loading the like counts.
*/
function enqueue_admin_scripts() {
if ( empty( $_GET['post_type'] ) || 'post' == $_GET['post_type'] || 'page' == $_GET['post_type'] ) {
if ( $this->in_jetpack ) {
wp_enqueue_script(
'likes-post-count',
Assets::get_file_url_for_environment(
'_inc/build/likes/post-count.min.js',
'modules/likes/post-count.js'
),
array( 'jquery' ),
JETPACK__VERSION
);
wp_enqueue_script(
'likes-post-count-jetpack',
Assets::get_file_url_for_environment(
'_inc/build/likes/post-count-jetpack.min.js',
'modules/likes/post-count-jetpack.js'
),
array( 'likes-post-count' ),
JETPACK__VERSION
);
} else {
wp_enqueue_script( 'jquery.wpcom-proxy-request', "/wp-content/js/jquery/jquery.wpcom-proxy-request.js", array('jquery'), NULL, true );
wp_enqueue_script( 'likes-post-count', plugins_url( 'likes/post-count.js', dirname( __FILE__ ) ), array( 'jquery' ), JETPACK__VERSION );
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 );
}
}
}
/**
* Add "Likes" column data to the post edit table in wp-admin.
*
* @param string $column_name
* @param int $post_id
*/
function likes_edit_column( $column_name, $post_id ) {
if ( 'likes' == $column_name ) {
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
$blog_id = get_current_blog_id();
} else {
$blog_id = Jetpack_Options::get_option( 'id' );
}
$permalink = get_permalink( get_the_ID() ); ?>
<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; ?>">
<span class="comment-count">0</span>
</a>
<?php
}
}
/**
* Add a "Likes" column header to the post edit table in wp-admin.
*
* @param array $columns
* @return array
*/
function add_like_count_column( $columns ) {
$date = $columns['date'];
unset( $columns['date'] );
$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>';
$columns['date'] = $date;
return $columns;
}
function post_likes( $content ) {
$post_id = get_the_ID();
if ( ! is_numeric( $post_id ) || ! $this->settings->is_likes_visible() )
return $content;
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
$blog_id = get_current_blog_id();
$bloginfo = get_blog_details( (int) $blog_id );
$domain = $bloginfo->domain;
} else {
$blog_id = Jetpack_Options::get_option( 'id' );
$url = home_url();
$url_parts = wp_parse_url( $url );
$domain = $url_parts['host'];
}
// make sure to include the scripts before the iframe otherwise weird things happen
add_action( 'wp_footer', 'jetpack_likes_master_iframe', 21 );
/**
* if the same post appears more then once on a page the page goes crazy
* we need a slightly more unique id / name for the widget wrapper.
*/
$uniqid = uniqid();
$src = sprintf( 'https://widgets.wp.com/likes/#blog_id=%1$d&post_id=%2$d&origin=%3$s&obj_id=%1$d-%2$d-%4$s', $blog_id, $post_id, $domain, $uniqid );
$name = sprintf( 'like-post-frame-%1$d-%2$d-%3$s', $blog_id, $post_id, $uniqid );
$wrapper = sprintf( 'like-post-wrapper-%1$d-%2$d-%3$s', $blog_id, $post_id, $uniqid );
$headline = sprintf(
/** This filter is already documented in modules/sharedaddy/sharing-service.php */
apply_filters( 'jetpack_sharing_headline_html', '<h3 class="sd-title">%s</h3>', esc_html__( 'Like this:', 'jetpack' ), 'likes' ),
esc_html__( 'Like this:', 'jetpack' )
);
$html = "<div class='sharedaddy sd-block sd-like jetpack-likes-widget-wrapper jetpack-likes-widget-unloaded' id='$wrapper' data-src='$src' data-name='$name'>";
$html .= $headline;
$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>';
$html .= "<span class='sd-text-color'></span><a class='sd-link-color'></a>";
$html .= '</div>';
// Let's make sure that the script is enqueued
wp_enqueue_script( 'jetpack_likes_queuehandler' );
return $content . $html;
}
function post_flair_service_enabled_like( $classes ) {
$classes[] = 'sd-like-enabled';
return $classes;
}
function is_admin_bar_button_visible() {
global $wp_admin_bar;
if ( ! is_object( $wp_admin_bar ) )
return false;
if ( ( ! is_singular( 'post' ) && ! is_attachment() && ! is_page() ) )
return false;
if ( ! $this->settings->is_likes_visible() )
return false;
if ( ! $this->settings->is_post_likeable() )
return false;
/**
* Filters whether the Like button is enabled in the admin bar.
*
* @module likes
*
* @since 2.2.0
*
* @param bool true Should the Like button be visible in the Admin bar. Default to true.
*/
return (bool) apply_filters( 'jetpack_admin_bar_likes_enabled', true );
}
function admin_bar_likes() {
global $wp_admin_bar;
$post_id = get_the_ID();
if ( ! is_numeric( $post_id ) || ! $this->is_admin_bar_button_visible() ) {
return;
}
$protocol = 'http';
if ( is_ssl() )
$protocol = 'https';
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
$blog_id = get_current_blog_id();
$bloginfo = get_blog_details( (int) $blog_id );
$domain = $bloginfo->domain;
} else {
$blog_id = Jetpack_Options::get_option( 'id' );
$url = home_url();
$url_parts = wp_parse_url( $url );
$domain = $url_parts['host'];
}
// make sure to include the scripts before the iframe otherwise weird things happen
add_action( 'wp_footer', 'jetpack_likes_master_iframe', 21 );
$src = sprintf( 'https://widgets.wp.com/likes/#blog_id=%2$d&post_id=%3$d&origin=%1$s://%4$s', $protocol, $blog_id, $post_id, $domain );
$html = "<iframe class='admin-bar-likes-widget jetpack-likes-widget' scrolling='no' frameBorder='0' name='admin-bar-likes-widget' src='$src'></iframe>";
$node = array(
'id' => 'admin-bar-likes-widget',
'meta' => array(
'html' => $html
)
);
$wp_admin_bar->add_node( $node );
}
}
/**
* Callback to get the value for the jetpack_likes_enabled field.
*
* Warning: this behavior is somewhat complicated!
* When the switch_like_status post_meta is unset, we follow the global setting in Sharing.
* When it is set to 0, we disable likes on the post, regardless of the global setting.
* When it is set to 1, we enable likes on the post, regardless of the global setting.
*/
function jetpack_post_likes_get_value( array $post ) {
$post_likes_switched = get_post_meta( $post['id'], 'switch_like_status', true );
/** This filter is documented in modules/jetpack-likes-settings.php */
$sitewide_likes_enabled = (bool) apply_filters( 'wpl_is_enabled_sitewide', ! get_option( 'disabled_likes' ) );
// an empty string: post meta was not set, so go with the global setting
if ( "" === $post_likes_switched ) {
return $sitewide_likes_enabled;
}
// user overrode the global setting to disable likes
elseif ( "0" === $post_likes_switched ) {
return false;
}
// user overrode the global setting to enable likes
elseif ( "1" === $post_likes_switched ) {
return true;
}
// no default fallback, let's stay explicit
}
/**
* Callback to set switch_like_status post_meta when jetpack_likes_enabled is updated.
*
* Warning: this behavior is somewhat complicated!
* When the switch_like_status post_meta is unset, we follow the global setting in Sharing.
* When it is set to 0, we disable likes on the post, regardless of the global setting.
* When it is set to 1, we enable likes on the post, regardless of the global setting.
*/
function jetpack_post_likes_update_value( $enable_post_likes, $post_object ) {
/** This filter is documented in modules/jetpack-likes-settings.php */
$sitewide_likes_enabled = (bool) apply_filters( 'wpl_is_enabled_sitewide', ! get_option( 'disabled_likes' ) );
$should_switch_status = $enable_post_likes !== $sitewide_likes_enabled;
if ( $should_switch_status ) {
// set the meta to 0 if the user wants to disable likes, 1 if user wants to enable
$switch_like_status = ( $enable_post_likes ? 1 : 0 );
return update_post_meta( $post_object->ID, 'switch_like_status', $switch_like_status );
} else {
// unset the meta otherwise
return delete_post_meta( $post_object->ID, 'switch_like_status' );
}
}
/**
* Add Likes post_meta to the REST API Post response.
*
* @action rest_api_init
* @uses register_rest_field
* @link https://developer.wordpress.org/rest-api/extending-the-rest-api/modifying-responses/
*/
function jetpack_post_likes_register_rest_field() {
$post_types = get_post_types( array( 'public' => true ) );
foreach ( $post_types as $post_type ) {
register_rest_field(
$post_type,
'jetpack_likes_enabled',
array(
'get_callback' => 'jetpack_post_likes_get_value',
'update_callback' => 'jetpack_post_likes_update_value',
'schema' => array(
'description' => __( 'Are Likes enabled?', 'jetpack' ),
'type' => 'boolean',
),
)
);
/**
* Ensures all public internal post-types support `likes`
* This feature support flag is used by the REST API and Gutenberg.
*/
add_post_type_support( $post_type, 'jetpack-post-likes' );
}
}
// Add Likes post_meta to the REST API Post response.
add_action( 'rest_api_init', 'jetpack_post_likes_register_rest_field' );
// Some CPTs (e.g. Jetpack portfolios and testimonials) get registered with
// restapi_theme_init because they depend on theme support, so let's also hook to that
add_action( 'restapi_theme_init', 'jetpack_post_likes_register_rest_field', 20 );
/**
* Set the Likes and Sharing Gutenberg extension availability
*/
function jetpack_post_likes_set_extension_availability() {
Jetpack_Gutenberg::set_extension_available( 'likes' );
}
add_action( 'jetpack_register_gutenberg_extensions', 'jetpack_post_likes_set_extension_availability' );
Jetpack_Likes::init();