Edit file File name : class-jetpack-gallery-settings.php Content :<?php /** * Adding extra functions for the gallery. * * @package automattic/jetpack */ use Automattic\Jetpack\Assets; /** * Renders extra controls in the Gallery Settings section of the new media UI. */ class Jetpack_Gallery_Settings { /** * Available gallery types. * * @var array */ public $gallery_types; /** * The constructor. */ public function __construct() { add_action( 'admin_init', array( $this, 'admin_init' ) ); } /** * Initialize the admin resources. */ public function admin_init() { /** * Filter the available gallery types. * * @module shortcodes, tiled-gallery * * @since 2.5.1 * * @param array $value Array of the default thumbnail grid gallery type. Default array contains one key, ‘default’. */ $this->gallery_types = apply_filters( 'jetpack_gallery_types', array( 'default' => __( 'Thumbnail Grid', 'jetpack' ) ) ); // Enqueue the media UI only if needed. if ( is_countable( $this->gallery_types ) && count( $this->gallery_types ) > 1 ) { add_action( 'wp_enqueue_media', array( $this, 'wp_enqueue_media' ) ); add_action( 'print_media_templates', array( $this, 'print_media_templates' ) ); } // Add Slideshow and Galleries functionality to core's media gallery widget. add_filter( 'widget_media_gallery_instance_schema', array( $this, 'core_media_widget_compat' ) ); } /** * Updates the schema of the core gallery widget so we can save the * fields that we add to Gallery Widgets, like `type` and `conditions` * * @param array $schema The current schema for the core gallery widget. * @return array the updated schema */ public function core_media_widget_compat( $schema ) { $schema['type'] = array( 'type' => 'string', 'enum' => array_keys( $this->gallery_types ), 'description' => __( 'Type of gallery.', 'jetpack' ), 'default' => 'default', ); return $schema; } /** * Registers/enqueues the gallery settings admin js. */ public function wp_enqueue_media() { if ( ! wp_script_is( 'jetpack-gallery-settings', 'registered' ) ) { /** * This only happens if we're not in Jetpack, but on WPCOM instead. * This is the correct path for WPCOM. */ wp_register_script( 'jetpack-gallery-settings', Assets::get_file_url_for_environment( '_inc/build/gallery-settings.min.js', '_inc/gallery-settings.js' ), array( 'jquery', 'media-views' ), '20121225', false ); } wp_enqueue_script( 'jetpack-gallery-settings' ); } /** * Outputs a view template which can be used with wp.media.template */ public function print_media_templates() { /** * Filter the default gallery type. * * @module tiled-gallery * * @since 2.5.1 * * @param string $value A string of the gallery type. Default is ‘default’. */ $default_gallery_type = apply_filters( 'jetpack_default_gallery_type', 'default' ); ?> <script type="text/html" id="tmpl-jetpack-gallery-settings"> <label class="setting"> <span><?php esc_html_e( 'Type', 'jetpack' ); ?></span> <select class="type" name="type" data-setting="type"> <?php foreach ( $this->gallery_types as $value => $caption ) : ?> <option value="<?php echo esc_attr( $value ); ?>" <?php selected( $value, $default_gallery_type ); ?>><?php echo esc_html( $caption ); ?></option> <?php endforeach; ?> </select> </label> </script> <?php } } new Jetpack_Gallery_Settings(); Save