source: tags/6.5/src/wp-includes/customize/class-wp-customize-nav-menu-item-control.php

<?php
/**
 * Customize API: WP_Customize_Nav_Menu_Item_Control class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 */

/**
 * Customize control to represent the name field for a given menu.
 *
 * @since 4.3.0
 *
 * @see WP_Customize_Control
 */
class WP_Customize_Nav_Menu_Item_Control extends WP_Customize_Control {

        /**
         * Control type.
         *
         * @since 4.3.0
         * @var string
         */
        public $type = 'nav_menu_item';

        /**
         * The nav menu item setting.
         *
         * @since 4.3.0
         * @var WP_Customize_Nav_Menu_Item_Setting
         */
        public $setting;

        /**
         * Constructor.
         *
         * @since 4.3.0
         *
         * @see WP_Customize_Control::__construct()
         *
         * @param WP_Customize_Manager $manager Customizer bootstrap instance.
         * @param string               $id      The control ID.
         * @param array                $args    Optional. Arguments to override class property defaults.
         *                                      See WP_Customize_Control::__construct() for information
         *                                      on accepted arguments. Default empty array.
         */
        public function __construct( $manager, $id, $args = array() ) {
                parent::__construct( $manager, $id, $args );
        }

        /**
         * Don't render the control's content - it's rendered with a JS template.
         *
         * @since 4.3.0
         */
        public function render_content() {}

        /**
         * JS/Underscore template for the control UI.
         *
         * @since 4.3.0
         */
        public function content_template() {
                ?>
                <div class="menu-item-bar">
                        <div class="menu-item-handle">
                                <span class="item-type" aria-hidden="true">{{ data.item_type_label }}</span>
                                <span class="item-title" aria-hidden="true">
                                        <span class="spinner"></span>
                                        <span class="menu-item-title<# if ( ! data.title && ! data.original_title ) { #> no-title<# } #>">{{ data.title || data.original_title || wp.customize.Menus.data.l10n.untitled }}</span>
                                        <# if ( 0 === data.depth ) { #>
                                                <span class="is-submenu" style="display: none;"><?php _e( 'sub item' ); ?></span>
                                        <# } else { #>
                                                <span class="is-submenu"><?php _e( 'sub item' ); ?></span>
                                        <# } #>
                                </span>
                                <span class="item-controls">
                                        <button type="button" class="button-link item-edit" aria-expanded="false"><span class="screen-reader-text">
                                        <?php
                                                /* translators: 1: Title of a menu item, 2: Type of a menu item. */
                                                printf( __( 'Edit menu item: %1$s (%2$s)' ), '{{ data.title || data.original_title || wp.customize.Menus.data.l10n.untitled }}', '{{ data.item_type_label }}' );
                                        ?>
                                        </span><span class="toggle-indicator" aria-hidden="true"></span></button>
                                        <button type="button" class="button-link item-delete submitdelete deletion"><span class="screen-reader-text">
                                        <?php
                                                /* translators: 1: Title of a menu item, 2: Type of a menu item. */
                                                printf( __( 'Remove Menu Item: %1$s (%2$s)' ), '{{ data.title || data.original_title || wp.customize.Menus.data.l10n.untitled }}', '{{ data.item_type_label }}' );
                                        ?>
                                        </span></button>
                                </span>
                        </div>
                </div>

                <div class="menu-item-settings" id="menu-item-settings-{{ data.menu_item_id }}">
                        <# if ( 'custom' === data.item_type ) { #>
                        <p class="field-url description description-thin">
                                <label for="edit-menu-item-url-{{ data.menu_item_id }}">
                                        <?php _e( 'URL' ); ?><br />
                                        <input class="widefat code edit-menu-item-url" type="text" id="edit-menu-item-url-{{ data.menu_item_id }}" name="menu-item-url" />
                                </label>
                        </p>
                <# } #>
                        <p class="description description-thin">
                                <label for="edit-menu-item-title-{{ data.menu_item_id }}">
                                        <?php _e( 'Navigation Label' ); ?><br />
                                        <input type="text" id="edit-menu-item-title-{{ data.menu_item_id }}" placeholder="{{ data.original_title }}" class="widefat edit-menu-item-title" name="menu-item-title" />
                                </label>
                        </p>
                        <p class="field-link-target description description-thin">
                                <label for="edit-menu-item-target-{{ data.menu_item_id }}">
                                        <input type="checkbox" id="edit-menu-item-target-{{ data.menu_item_id }}" class="edit-menu-item-target" value="_blank" name="menu-item-target" />
                                        <?php _e( 'Open link in a new tab' ); ?>
                                </label>
                        </p>
                        <p class="field-title-attribute field-attr-title description description-thin">
                                <label for="edit-menu-item-attr-title-{{ data.menu_item_id }}">
                                        <?php _e( 'Title Attribute' ); ?><br />
                                        <input type="text" id="edit-menu-item-attr-title-{{ data.menu_item_id }}" class="widefat edit-menu-item-attr-title" name="menu-item-attr-title" />
                                </label>
                        </p>
                        <p class="field-css-classes description description-thin">
                                <label for="edit-menu-item-classes-{{ data.menu_item_id }}">
                                        <?php _e( 'CSS Classes' ); ?><br />
                                        <input type="text" id="edit-menu-item-classes-{{ data.menu_item_id }}" class="widefat code edit-menu-item-classes" name="menu-item-classes" />
                                </label>
                        </p>
                        <p class="field-xfn description description-thin">
                                <label for="edit-menu-item-xfn-{{ data.menu_item_id }}">
                                        <?php _e( 'Link Relationship (XFN)' ); ?><br />
                                        <input type="text" id="edit-menu-item-xfn-{{ data.menu_item_id }}" class="widefat code edit-menu-item-xfn" name="menu-item-xfn" />
                                </label>
                        </p>
                        <p class="field-description description description-thin">
                                <label for="edit-menu-item-description-{{ data.menu_item_id }}">
                                        <?php _e( 'Description' ); ?><br />
                                        <textarea id="edit-menu-item-description-{{ data.menu_item_id }}" class="widefat edit-menu-item-description" rows="3" cols="20" name="menu-item-description">{{ data.description }}</textarea>
                                        <span class="description"><?php _e( 'The description will be displayed in the menu if the active theme supports it.' ); ?></span>
                                </label>
                        </p>

                        <?php
                        /**
                         * Fires at the end of the form field template for nav menu items in the customizer.
                         *
                         * Additional fields can be rendered here and managed in JavaScript.
                         *
                         * @since 5.4.0
                         */
                        do_action( 'wp_nav_menu_item_custom_fields_customize_template' );
                        ?>

                        <div class="menu-item-actions description-thin submitbox">
                                <# if ( ( 'post_type' === data.item_type || 'taxonomy' === data.item_type ) && '' !== data.original_title ) { #>
                                <p class="link-to-original">
                                        <?php
                                                /* translators: Nav menu item original title. %s: Original title. */
                                                printf( __( 'Original: %s' ), '<a class="original-link" href="{{ data.url }}">{{ data.original_title }}</a>' );
                                        ?>
                                </p>
                                <# } #>

                                <button type="button" class="button-link button-link-delete item-delete submitdelete deletion"><?php _e( 'Remove' ); ?></button>
                                <span class="spinner"></span>
                        </div>
                        <input type="hidden" name="menu-item-db-id[{{ data.menu_item_id }}]" class="menu-item-data-db-id" value="{{ data.menu_item_id }}" />
                        <input type="hidden" name="menu-item-parent-id[{{ data.menu_item_id }}]" class="menu-item-data-parent-id" value="{{ data.parent }}" />
                </div><!-- .menu-item-settings-->
                <ul class="menu-item-transport"></ul>
                <?php
        }

        /**
         * Return parameters for this control.
         *
         * @since 4.3.0
         *
         * @return array Exported parameters.
         */
        public function json() {
                $exported                 = parent::json();
                $exported['menu_item_id'] = $this->setting->post_id;

                return $exported;
        }
}