name : class-wp-nav-menu-widget.php <?php /** * Widget API: WP_Nav_Menu_Widget class * * @package WordPress * @subpackage Widgets * @since 4.4.0 */ /** * Core class used to implement the Navigation Menu widget. * * @since 3.0.0 * * @see WP_Widget */ class WP_Nav_Menu_Widget extends WP_Widget { /** * Sets up a new Navigation Menu widget instance. * * @since 3.0.0 */ public function __construct() { $widget_ops = array( 'description' => __( 'Add a navigation menu to your sidebar.' ), 'customize_selective_refresh' => true, 'show_instance_in_rest' => true, ); parent::__construct( 'nav_menu', __( 'Navigation Menu' ), $widget_ops ); } /** * Outputs the content for the current Navigation Menu widget instance. * * @since 3.0.0 * * @param array $args Display arguments including 'before_title', 'after_title', * 'before_widget', and 'after_widget'. * @param array $instance Settings for the current Navigation Menu widget instance. */ public function widget( $args, $instance ) { // Get menu. $nav_menu = ! empty( $instance['nav_menu'] ) ? wp_get_nav_menu_object( $instance['nav_menu'] ) : false; if ( ! $nav_menu ) { return; } $default_title = __( 'Menu' ); $title = ! empty( $instance['title'] ) ? $instance['title'] : ''; /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); echo $args['before_widget']; if ( $title ) { echo $args['before_title'] . $title . $args['after_title']; } $format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml'; /** * Filters the HTML format of widgets with navigation links. * * @since 5.5.0 * * @param string $format The type of markup to use in widgets with navigation links. * Accepts 'html5', 'xhtml'. */ $format = apply_filters( 'navigation_widgets_format', $format ); if ( 'html5' === $format ) { // The title may be filtered: Strip out HTML and make sure the aria-label is never empty. $title = trim( strip_tags( $title ) ); $aria_label = $title ? $title : $default_title; $nav_menu_args = array( 'fallback_cb' => '', 'menu' => $nav_menu, 'container' => 'nav', 'container_aria_label' => $aria_label, 'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>', ); } else { $nav_menu_args = array( 'fallback_cb' => '', 'menu' => $nav_menu, ); } /** * Filters the arguments for the Navigation Menu widget. * * @since 4.2.0 * @since 4.4.0 Added the `$instance` parameter. * * @param array $nav_menu_args { * An array of arguments passed to wp_nav_menu() to retrieve a navigation menu. * * @type callable|bool $fallback_cb Callback to fire if the menu doesn't exist. Default empty. * @type mixed $menu Menu ID, slug, or name. * } * @param WP_Term $nav_menu Nav menu object for the current menu. * @param array $args Display arguments for the current widget. * @param array $instance Array of settings for the current widget. */ wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance ) ); echo $args['after_widget']; } /** * Handles updating settings for the current Navigation Menu widget instance. * * @since 3.0.0 * * @param array $new_instance New settings for this instance as input by the user via * WP_Widget::form(). * @param array $old_instance Old settings for this instance. * @return array Updated settings to save. */ public function update( $new_instance, $old_instance ) { $instance = array(); if ( ! empty( $new_instance['title'] ) ) { $instance['title'] = sanitize_text_field( $new_instance['title'] ); } if ( ! empty( $new_instance['nav_menu'] ) ) { $instance['nav_menu'] = (int) $new_instance['nav_menu']; } return $instance; } /** * Outputs the settings form for the Navigation Menu widget. * * @since 3.0.0 * * @global WP_Customize_Manager $wp_customize * * @param array $instance Current settings. */ public function form( $instance ) { global $wp_customize; $title = isset( $instance['title'] ) ? $instance['title'] : ''; $nav_menu = isset( $instance['nav_menu'] ) ? $instance['nav_menu'] : ''; // Get menus. $menus = wp_get_nav_menus(); $empty_menus_style = ''; $not_empty_menus_style = ''; if ( empty( $menus ) ) { $empty_menus_style = ' style="display:none" '; } else { $not_empty_menus_style = ' style="display:none" '; } $nav_menu_style = ''; if ( ! $nav_menu ) { $nav_menu_style = 'display: none;'; } // If no menus exists, direct the user to go and create some. ?> <p class="nav-menu-widget-no-menus-message" <?php echo $not_empty_menus_style; ?>> <?php if ( $wp_customize instanceof WP_Customize_Manager ) { $url = 'javascript: wp.customize.panel( "nav_menus" ).focus();'; } else { $url = admin_url( 'nav-menus.php' ); } printf( /* translators: %s: URL to create a new menu. */ __( 'No menus have been created yet. <a href="%s">Create some</a>.' ), // The URL can be a `javascript:` link, so esc_attr() is used here instead of esc_url(). esc_attr( $url ) ); ?> </p> <div class="nav-menu-widget-form-controls" <?php echo $empty_menus_style; ?>> <p> <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label> <input type="text" class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo esc_attr( $title ); ?>" /> </p> <p> <label for="<?php echo $this->get_field_id( 'nav_menu' ); ?>"><?php _e( 'Select Menu:' ); ?></label> <select id="<?php echo $this->get_field_id( 'nav_menu' ); ?>" name="<?php echo $this->get_field_name( 'nav_menu' ); ?>"> <option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option> <?php foreach ( $menus as $menu ) : ?> <option value="<?php echo esc_attr( $menu->term_id ); ?>" <?php selected( $nav_menu, $menu->term_id ); ?>> <?php echo esc_html( $menu->name ); ?> </option> <?php endforeach; ?> </select> </p> <?php if ( $wp_customize instanceof WP_Customize_Manager ) : ?> <p class="edit-selected-nav-menu" style="<?php echo $nav_menu_style; ?>"> <button type="button" class="button"><?php _e( 'Edit Menu' ); ?></button> </p> <?php endif; ?> </div> <?php } }