<?php
/**
* Jetpack's Sharing feature, nee Sharedaddy.
* The most super duper sharing tool on the interwebs.
*
* @package automattic/jetpack
*/
// Set up Sharing in wp-admin.
require_once plugin_dir_path( __FILE__ ) . 'sharing.php';
/**
* Add a meta box to the post editing screen for sharing.
*
* @return void
*/
function sharing_add_meta_box() {
global $post;
if ( empty( $post ) ) { // If a current post is not defined, such as when editing a comment.
return;
}
/**
* Filter whether to display the Sharing Meta Box or not.
*
* @module sharedaddy
*
* @since 3.8.0
*
* @param bool true Display Sharing Meta Box.
* @param $post Post.
*/
if ( ! apply_filters( 'sharing_meta_box_show', true, $post ) ) {
return;
}
$post_types = get_post_types( array( 'public' => true ) );
/**
* Filter the Sharing Meta Box title.
*
* @module sharedaddy
*
* @since 2.2.0
*
* @param string $var Sharing Meta Box title. Default is "Sharing".
*/
$title = apply_filters( 'sharing_meta_box_title', __( 'Sharing', 'jetpack' ) );
if ( $post->ID !== get_option( 'page_for_posts' ) ) {
foreach ( $post_types as $post_type ) {
add_meta_box( 'sharing_meta', $title, 'sharing_meta_box_content', $post_type, 'side', 'default', array( '__back_compat_meta_box' => true ) );
}
}
}
/**
* Content of the meta box.
*
* @param WP_Post $post The post to share.
*
* @return void
*/
function sharing_meta_box_content( $post ) {
/**
* Fires before the sharing meta box content.
*
* @module sharedaddy
*
* @since 2.2.0
*
* @param WP_Post $post The post to share.
*/
do_action( 'start_sharing_meta_box_content', $post );
$disabled = get_post_meta( $post->ID, 'sharing_disabled', true ); ?>
<p>
<label for="enable_post_sharing">
<input type="checkbox" name="enable_post_sharing" id="enable_post_sharing" value="1" <?php checked( ! $disabled ); ?>>
<?php esc_html_e( 'Show sharing buttons.', 'jetpack' ); ?>
</label>
<input type="hidden" name="sharing_status_hidden" value="1" />
</p>
<?php
/**
* Fires after the sharing meta box content.
*
* @module sharedaddy
*
* @since 2.2.0
*
* @param WP_Post $post The post to share.
*/
do_action( 'end_sharing_meta_box_content', $post );
}
/**
* Save new sharing status in post meta in the meta box.
*
* @param int $post_id Post ID.
*
* @return int
*/
function sharing_meta_box_save( $post_id ) {
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
return $post_id;
}
if ( ! isset( $_POST['post_type'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.
return $post_id;
}
$post_type_object = get_post_type_object( sanitize_key( $_POST['post_type'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.
// Record sharing disable.
if (
$post_type_object->public
&& current_user_can( 'edit_post', $post_id )
&& isset( $_POST['sharing_status_hidden'] ) // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.
) {
if ( ! isset( $_POST['enable_post_sharing'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.
update_post_meta( $post_id, 'sharing_disabled', 1 );
} else {
delete_post_meta( $post_id, 'sharing_disabled' );
}
}
return $post_id;
}
/**
* If Sharing is disabled, disable the meta box.
*
* @param bool $protected Whether the key is considered protected.
* @param string $meta_key Metadata key.
*
* @return bool
*/
function sharing_meta_box_protected( $protected, $meta_key ) {
if ( 'sharing_disabled' === $meta_key ) {
$protected = true;
}
return $protected;
}
add_filter( 'is_protected_meta', 'sharing_meta_box_protected', 10, 2 );
/**
* Add link to sharing settings in the Plugins screen.
*
* @param array $links An array of plugin action links.
*
* @return array
*/
function sharing_plugin_settings( $links ) {
$settings_link = '<a href="options-general.php?page=sharing.php">' . __( 'Settings', 'jetpack' ) . '</a>';
array_unshift( $links, $settings_link );
return $links;
}
/**
* Add links to settings and support in the plugin row.
*
* @param array $links An array of the plugin's metadata, including the version, author, author URI, and plugin URI.
* @param string $file Path to the plugin file relative to the plugins directory.
*
* @return array
*/
function sharing_add_plugin_settings( $links, $file ) {
if ( $file === basename( __DIR__ ) . '/' . basename( __FILE__ ) ) {
$links[] = '<a href="options-general.php?page=sharing.php">' . __( 'Settings', 'jetpack' ) . '</a>';
$links[] = '<a href="https://support.wordpress.com/sharing/" rel="noopener noreferrer" target="_blank">' . __( 'Support', 'jetpack' ) . '</a>';
}
return $links;
}
/**
* Disable sharing on the frontend if disabled in the admin.
*
* @return void
*/
function sharing_init() {
if ( Jetpack_Options::get_option_and_ensure_autoload( 'sharedaddy_disable_resources', '0' ) ) {
add_filter( 'sharing_js', '__return_false' );
remove_action( 'wp_head', 'sharing_add_header', 1 );
}
}
/**
* Add settings to disable CSS and JS normally enqueued by our feature.
*
* @return void
*/
function sharing_global_resources() {
$disable = get_option( 'sharedaddy_disable_resources' );
?>
<tr valign="top">
<th scope="row"><label for="disable_css"><?php esc_html_e( 'Disable CSS and JS', 'jetpack' ); ?></label></th>
<td>
<?php
printf(
'<input id="disable_css" type="checkbox" name="disable_resources"%1$s /> <small><em>%2$s</em></small>',
( 1 == $disable ) ? ' checked="checked"' : '', // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual
esc_html__( 'Advanced. If this option is checked, you must include these files in your theme manually for the sharing links to work.', 'jetpack' )
);
?>
</td>
</tr>
<?php
}
/**
* Save settings to disable CSS and JS normally enqueued by our feature.
*
* @return void
*/
function sharing_global_resources_save() {
update_option( 'sharedaddy_disable_resources', isset( $_POST['disable_resources'] ) ? 1 : 0 ); // phpcs:ignore WordPress.Security.NonceVerification.Missing -- nonce handling is handled for all elements at once.
}
add_action( 'init', 'sharing_init' );
add_action( 'add_meta_boxes', 'sharing_add_meta_box' );
add_action( 'save_post', 'sharing_meta_box_save' );
add_action( 'edit_attachment', 'sharing_meta_box_save' );
add_action( 'sharing_global_options', 'sharing_global_resources', 30 );
add_action( 'sharing_admin_update', 'sharing_global_resources_save' );
add_action( 'plugin_action_links_' . basename( __DIR__ ) . '/' . basename( __FILE__ ), 'sharing_plugin_settings', 10, 4 );
add_filter( 'plugin_row_meta', 'sharing_add_plugin_settings', 10, 2 );