X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/48ab98cb1779cf2088c1351ac3dd3d0da6fb31d3..e3ff8f35458a959c1879c0a4976701ed8dcfe651:/wp-admin/includes/class-wp-upgrader-skins.php diff --git a/wp-admin/includes/class-wp-upgrader-skins.php b/wp-admin/includes/class-wp-upgrader-skins.php index 8fcee68f..183a0119 100644 --- a/wp-admin/includes/class-wp-upgrader-skins.php +++ b/wp-admin/includes/class-wp-upgrader-skins.php @@ -7,761 +7,37 @@ * @since 2.8.0 */ -/** - * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes. - * - * @package WordPress - * @subpackage Upgrader - * @since 2.8.0 - */ -class WP_Upgrader_Skin { - - public $upgrader; - public $done_header = false; - public $done_footer = false; - public $result = false; - - public function __construct($args = array()) { - $defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false ); - $this->options = wp_parse_args($args, $defaults); - } - - public function set_upgrader(&$upgrader) { - if ( is_object($upgrader) ) - $this->upgrader =& $upgrader; - $this->add_strings(); - } - - public function add_strings() { - } - - public function set_result($result) { - $this->result = $result; - } - - public function request_filesystem_credentials($error = false) { - $url = $this->options['url']; - $context = $this->options['context']; - if ( !empty($this->options['nonce']) ) - $url = wp_nonce_url($url, $this->options['nonce']); - return request_filesystem_credentials($url, '', $error, $context); //Possible to bring inline, Leaving as is for now. - } - - public function header() { - if ( $this->done_header ) { - return; - } - $this->done_header = true; - echo '
'; - echo '

' . $this->options['title'] . '

'; - } - public function footer() { - if ( $this->done_footer ) { - return; - } - $this->done_footer = true; - echo '
'; - } - - public function error($errors) { - if ( ! $this->done_header ) - $this->header(); - if ( is_string($errors) ) { - $this->feedback($errors); - } elseif ( is_wp_error($errors) && $errors->get_error_code() ) { - foreach ( $errors->get_error_messages() as $message ) { - if ( $errors->get_error_data() && is_string( $errors->get_error_data() ) ) - $this->feedback($message . ' ' . esc_html( strip_tags( $errors->get_error_data() ) ) ); - else - $this->feedback($message); - } - } - } - - public function feedback($string) { - if ( isset( $this->upgrader->strings[$string] ) ) - $string = $this->upgrader->strings[$string]; - - if ( strpos($string, '%') !== false ) { - $args = func_get_args(); - $args = array_splice($args, 1); - if ( $args ) { - $args = array_map( 'strip_tags', $args ); - $args = array_map( 'esc_html', $args ); - $string = vsprintf($string, $args); - } - } - if ( empty($string) ) - return; - show_message($string); - } - public function before() {} - public function after() {} - - /** - * Output JavaScript that calls function to decrement the update counts. - * - * @since 3.9.0 - * - * @param string $type Type of update count to decrement. Likely values include 'plugin', - * 'theme', 'translation', etc. - */ - protected function decrement_update_count( $type ) { - if ( ! $this->result || is_wp_error( $this->result ) || 'up_to_date' === $this->result ) { - return; - } - - if ( defined( 'IFRAME_REQUEST' ) ) { - echo ''; - } else { - echo ''; - } - } -} - -/** - * Plugin Upgrader Skin for WordPress Plugin Upgrades. - * - * @package WordPress - * @subpackage Upgrader - * @since 2.8.0 - */ -class Plugin_Upgrader_Skin extends WP_Upgrader_Skin { - public $plugin = ''; - public $plugin_active = false; - public $plugin_network_active = false; - - public function __construct($args = array()) { - $defaults = array( 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => __('Update Plugin') ); - $args = wp_parse_args($args, $defaults); - - $this->plugin = $args['plugin']; - - $this->plugin_active = is_plugin_active( $this->plugin ); - $this->plugin_network_active = is_plugin_active_for_network( $this->plugin ); - - parent::__construct($args); - } - - public function after() { - $this->plugin = $this->upgrader->plugin_info(); - if ( !empty($this->plugin) && !is_wp_error($this->result) && $this->plugin_active ){ - echo ''; - } - - $this->decrement_update_count( 'plugin' ); - - $update_actions = array( - 'activate_plugin' => '' . __('Activate Plugin') . '', - 'plugins_page' => '' . __('Return to Plugins page') . '' - ); - if ( $this->plugin_active || ! $this->result || is_wp_error( $this->result ) || ! current_user_can( 'activate_plugins' ) ) - unset( $update_actions['activate_plugin'] ); - - /** - * Filter the list of action links available following a single plugin update. - * - * @since 2.7.0 - * - * @param array $update_actions Array of plugin action links. - * @param string $plugin Path to the plugin file. - */ - $update_actions = apply_filters( 'update_plugin_complete_actions', $update_actions, $this->plugin ); - - if ( ! empty($update_actions) ) - $this->feedback(implode(' | ', (array)$update_actions)); - } -} - -/** - * Plugin Upgrader Skin for WordPress Plugin Upgrades. - * - * @package WordPress - * @subpackage Upgrader - * @since 3.0.0 - */ -class Bulk_Upgrader_Skin extends WP_Upgrader_Skin { - public $in_loop = false; - public $error = false; - - public function __construct($args = array()) { - $defaults = array( 'url' => '', 'nonce' => '' ); - $args = wp_parse_args($args, $defaults); - - parent::__construct($args); - } - - public function add_strings() { - $this->upgrader->strings['skin_upgrade_start'] = __('The update process is starting. This process may take a while on some hosts, so please be patient.'); - $this->upgrader->strings['skin_update_failed_error'] = __('An error occurred while updating %1$s: %2$s'); - $this->upgrader->strings['skin_update_failed'] = __('The update of %1$s failed.'); - $this->upgrader->strings['skin_update_successful'] = __('%1$s updated successfully.').' '.__('Show Details').'.'; - $this->upgrader->strings['skin_upgrade_end'] = __('All updates have been completed.'); - } - - public function feedback($string) { - if ( isset( $this->upgrader->strings[$string] ) ) - $string = $this->upgrader->strings[$string]; - - if ( strpos($string, '%') !== false ) { - $args = func_get_args(); - $args = array_splice($args, 1); - if ( $args ) { - $args = array_map( 'strip_tags', $args ); - $args = array_map( 'esc_html', $args ); - $string = vsprintf($string, $args); - } - } - if ( empty($string) ) - return; - if ( $this->in_loop ) - echo "$string
\n"; - else - echo "

$string

\n"; - } - - public function header() { - // Nothing, This will be displayed within a iframe. - } - - public function footer() { - // Nothing, This will be displayed within a iframe. - } - public function error($error) { - if ( is_string($error) && isset( $this->upgrader->strings[$error] ) ) - $this->error = $this->upgrader->strings[$error]; - - if ( is_wp_error($error) ) { - $messages = array(); - foreach ( $error->get_error_messages() as $emessage ) { - if ( $error->get_error_data() && is_string( $error->get_error_data() ) ) - $messages[] = $emessage . ' ' . esc_html( strip_tags( $error->get_error_data() ) ); - else - $messages[] = $emessage; - } - $this->error = implode(', ', $messages); - } - echo ''; - } - - public function bulk_header() { - $this->feedback('skin_upgrade_start'); - } - - public function bulk_footer() { - $this->feedback('skin_upgrade_end'); - } - - public function before($title = '') { - $this->in_loop = true; - printf( '

' . $this->upgrader->strings['skin_before_update_header'] . '

', $title, $this->upgrader->update_current, $this->upgrader->update_count); - echo ''; - echo '

'; - $this->flush_output(); - } - - public function after($title = '') { - echo '

'; - if ( $this->error || ! $this->result ) { - if ( $this->error ) - echo '

' . sprintf($this->upgrader->strings['skin_update_failed_error'], $title, $this->error) . '

'; - else - echo '

' . sprintf($this->upgrader->strings['skin_update_failed'], $title) . '

'; - - echo ''; - } - if ( $this->result && ! is_wp_error( $this->result ) ) { - if ( ! $this->error ) - echo '

' . sprintf($this->upgrader->strings['skin_update_successful'], $title, 'jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').toggle();jQuery(\'span\', this).toggle(); return false;') . '

'; - echo ''; - } - - $this->reset(); - $this->flush_output(); - } - - public function reset() { - $this->in_loop = false; - $this->error = false; - } - - public function flush_output() { - wp_ob_end_flush_all(); - flush(); - } -} - -class Bulk_Plugin_Upgrader_Skin extends Bulk_Upgrader_Skin { - public $plugin_info = array(); // Plugin_Upgrader::bulk() will fill this in. - - public function __construct($args = array()) { - parent::__construct($args); - } - - public function add_strings() { - parent::add_strings(); - $this->upgrader->strings['skin_before_update_header'] = __('Updating Plugin %1$s (%2$d/%3$d)'); - } - - public function before($title = '') { - parent::before($this->plugin_info['Title']); - } - - public function after($title = '') { - parent::after($this->plugin_info['Title']); - $this->decrement_update_count( 'plugin' ); - } - public function bulk_footer() { - parent::bulk_footer(); - $update_actions = array( - 'plugins_page' => '' . __('Return to Plugins page') . '', - 'updates_page' => '' . __('Return to WordPress Updates') . '' - ); - if ( ! current_user_can( 'activate_plugins' ) ) - unset( $update_actions['plugins_page'] ); - - /** - * Filter the list of action links available following bulk plugin updates. - * - * @since 3.0.0 - * - * @param array $update_actions Array of plugin action links. - * @param array $plugin_info Array of information for the last-updated plugin. - */ - $update_actions = apply_filters( 'update_bulk_plugins_complete_actions', $update_actions, $this->plugin_info ); - - if ( ! empty($update_actions) ) - $this->feedback(implode(' | ', (array)$update_actions)); - } -} - -class Bulk_Theme_Upgrader_Skin extends Bulk_Upgrader_Skin { - public $theme_info = array(); // Theme_Upgrader::bulk() will fill this in. - - public function __construct($args = array()) { - parent::__construct($args); - } - - public function add_strings() { - parent::add_strings(); - $this->upgrader->strings['skin_before_update_header'] = __('Updating Theme %1$s (%2$d/%3$d)'); - } - - public function before($title = '') { - parent::before( $this->theme_info->display('Name') ); - } - - public function after($title = '') { - parent::after( $this->theme_info->display('Name') ); - $this->decrement_update_count( 'theme' ); - } - - public function bulk_footer() { - parent::bulk_footer(); - $update_actions = array( - 'themes_page' => '' . __('Return to Themes page') . '', - 'updates_page' => '' . __('Return to WordPress Updates') . '' - ); - if ( ! current_user_can( 'switch_themes' ) && ! current_user_can( 'edit_theme_options' ) ) - unset( $update_actions['themes_page'] ); - - /** - * Filter the list of action links available following bulk theme updates. - * - * @since 3.0.0 - * - * @param array $update_actions Array of theme action links. - * @param array $theme_info Array of information for the last-updated theme. - */ - $update_actions = apply_filters( 'update_bulk_theme_complete_actions', $update_actions, $this->theme_info ); - - if ( ! empty($update_actions) ) - $this->feedback(implode(' | ', (array)$update_actions)); - } -} - -/** - * Plugin Installer Skin for WordPress Plugin Installer. - * - * @package WordPress - * @subpackage Upgrader - * @since 2.8.0 - */ -class Plugin_Installer_Skin extends WP_Upgrader_Skin { - public $api; - public $type; - - public function __construct($args = array()) { - $defaults = array( 'type' => 'web', 'url' => '', 'plugin' => '', 'nonce' => '', 'title' => '' ); - $args = wp_parse_args($args, $defaults); - - $this->type = $args['type']; - $this->api = isset($args['api']) ? $args['api'] : array(); - - parent::__construct($args); - } - - public function before() { - if ( !empty($this->api) ) - $this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the plugin %s %s.'), $this->api->name, $this->api->version); - } - - public function after() { - - $plugin_file = $this->upgrader->plugin_info(); - - $install_actions = array(); - - $from = isset($_GET['from']) ? wp_unslash( $_GET['from'] ) : 'plugins'; - - if ( 'import' == $from ) - $install_actions['activate_plugin'] = '' . __('Activate Plugin & Run Importer') . ''; - else - $install_actions['activate_plugin'] = '' . __('Activate Plugin') . ''; - - if ( is_multisite() && current_user_can( 'manage_network_plugins' ) ) { - $install_actions['network_activate'] = '' . __('Network Activate') . ''; - unset( $install_actions['activate_plugin'] ); - } - - if ( 'import' == $from ) - $install_actions['importers_page'] = '' . __('Return to Importers') . ''; - else if ( $this->type == 'web' ) - $install_actions['plugins_page'] = '' . __('Return to Plugin Installer') . ''; - else - $install_actions['plugins_page'] = '' . __('Return to Plugins page') . ''; - - if ( ! $this->result || is_wp_error($this->result) ) { - unset( $install_actions['activate_plugin'], $install_actions['network_activate'] ); - } elseif ( ! current_user_can( 'activate_plugins' ) ) { - unset( $install_actions['activate_plugin'] ); - } - - /** - * Filter the list of action links available following a single plugin installation. - * - * @since 2.7.0 - * - * @param array $install_actions Array of plugin action links. - * @param object $api Object containing WordPress.org API plugin data. Empty - * for non-API installs, such as when a plugin is installed - * via upload. - * @param string $plugin_file Path to the plugin file. - */ - $install_actions = apply_filters( 'install_plugin_complete_actions', $install_actions, $this->api, $plugin_file ); - - if ( ! empty($install_actions) ) - $this->feedback(implode(' | ', (array)$install_actions)); - } -} - -/** - * Theme Installer Skin for the WordPress Theme Installer. - * - * @package WordPress - * @subpackage Upgrader - * @since 2.8.0 - */ -class Theme_Installer_Skin extends WP_Upgrader_Skin { - public $api; - public $type; - - public function __construct($args = array()) { - $defaults = array( 'type' => 'web', 'url' => '', 'theme' => '', 'nonce' => '', 'title' => '' ); - $args = wp_parse_args($args, $defaults); - - $this->type = $args['type']; - $this->api = isset($args['api']) ? $args['api'] : array(); - - parent::__construct($args); - } - - public function before() { - if ( !empty($this->api) ) - $this->upgrader->strings['process_success'] = sprintf( $this->upgrader->strings['process_success_specific'], $this->api->name, $this->api->version); - } - - public function after() { - if ( empty($this->upgrader->result['destination_name']) ) - return; - - $theme_info = $this->upgrader->theme_info(); - if ( empty( $theme_info ) ) - return; - - $name = $theme_info->display('Name'); - $stylesheet = $this->upgrader->result['destination_name']; - $template = $theme_info->get_template(); - - $preview_link = add_query_arg( array( - 'preview' => 1, - 'template' => urlencode( $template ), - 'stylesheet' => urlencode( $stylesheet ), - ), trailingslashit( home_url() ) ); - - $activate_link = add_query_arg( array( - 'action' => 'activate', - 'template' => urlencode( $template ), - 'stylesheet' => urlencode( $stylesheet ), - ), admin_url('themes.php') ); - $activate_link = wp_nonce_url( $activate_link, 'switch-theme_' . $stylesheet ); - - $install_actions = array(); - $install_actions['preview'] = '' . __('Preview') . ''; - if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) { - $install_actions['preview'] .= '' . __('Live Preview') . ''; - } - $install_actions['activate'] = '' . __('Activate') . ''; - - if ( is_network_admin() && current_user_can( 'manage_network_themes' ) ) - $install_actions['network_enable'] = '' . __( 'Network Enable' ) . ''; - - if ( $this->type == 'web' ) - $install_actions['themes_page'] = '' . __('Return to Theme Installer') . ''; - elseif ( current_user_can( 'switch_themes' ) || current_user_can( 'edit_theme_options' ) ) - $install_actions['themes_page'] = '' . __('Return to Themes page') . ''; - - if ( ! $this->result || is_wp_error($this->result) || is_network_admin() || ! current_user_can( 'switch_themes' ) ) - unset( $install_actions['activate'], $install_actions['preview'] ); - - /** - * Filter the list of action links available following a single theme installation. - * - * @since 2.8.0 - * - * @param array $install_actions Array of theme action links. - * @param object $api Object containing WordPress.org API theme data. - * @param string $stylesheet Theme directory name. - * @param WP_Theme $theme_info Theme object. - */ - $install_actions = apply_filters( 'install_theme_complete_actions', $install_actions, $this->api, $stylesheet, $theme_info ); - if ( ! empty($install_actions) ) - $this->feedback(implode(' | ', (array)$install_actions)); - } -} - -/** - * Theme Upgrader Skin for WordPress Theme Upgrades. - * - * @package WordPress - * @subpackage Upgrader - * @since 2.8.0 - */ -class Theme_Upgrader_Skin extends WP_Upgrader_Skin { - public $theme = ''; - - public function __construct($args = array()) { - $defaults = array( 'url' => '', 'theme' => '', 'nonce' => '', 'title' => __('Update Theme') ); - $args = wp_parse_args($args, $defaults); - - $this->theme = $args['theme']; - - parent::__construct($args); - } - - public function after() { - $this->decrement_update_count( 'theme' ); - - $update_actions = array(); - if ( ! empty( $this->upgrader->result['destination_name'] ) && $theme_info = $this->upgrader->theme_info() ) { - $name = $theme_info->display('Name'); - $stylesheet = $this->upgrader->result['destination_name']; - $template = $theme_info->get_template(); - - $preview_link = add_query_arg( array( - 'preview' => 1, - 'template' => urlencode( $template ), - 'stylesheet' => urlencode( $stylesheet ), - ), trailingslashit( home_url() ) ); - - $activate_link = add_query_arg( array( - 'action' => 'activate', - 'template' => urlencode( $template ), - 'stylesheet' => urlencode( $stylesheet ), - ), admin_url('themes.php') ); - $activate_link = wp_nonce_url( $activate_link, 'switch-theme_' . $stylesheet ); - - if ( get_stylesheet() == $stylesheet ) { - if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) { - $update_actions['preview'] = '' . __('Customize') . ''; - } - } elseif ( current_user_can( 'switch_themes' ) ) { - $update_actions['preview'] = '' . __('Preview') . ''; - if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) { - $update_actions['preview'] .= '' . __('Live Preview') . ''; - } - $update_actions['activate'] = '' . __('Activate') . ''; - } - - if ( ! $this->result || is_wp_error( $this->result ) || is_network_admin() ) - unset( $update_actions['preview'], $update_actions['activate'] ); - } - - $update_actions['themes_page'] = '' . __('Return to Themes page') . ''; - - /** - * Filter the list of action links available following a single theme update. - * - * @since 2.8.0 - * - * @param array $update_actions Array of theme action links. - * @param string $theme Theme directory name. - */ - $update_actions = apply_filters( 'update_theme_complete_actions', $update_actions, $this->theme ); - - if ( ! empty($update_actions) ) - $this->feedback(implode(' | ', (array)$update_actions)); - } -} - -/** - * Translation Upgrader Skin for WordPress Translation Upgrades. - * - * @package WordPress - * @subpackage Upgrader - * @since 3.7.0 - */ -class Language_Pack_Upgrader_Skin extends WP_Upgrader_Skin { - public $language_update = null; - public $done_header = false; - public $done_footer = false; - public $display_footer_actions = true; - - public function __construct( $args = array() ) { - $defaults = array( 'url' => '', 'nonce' => '', 'title' => __( 'Update Translations' ), 'skip_header_footer' => false ); - $args = wp_parse_args( $args, $defaults ); - if ( $args['skip_header_footer'] ) { - $this->done_header = true; - $this->done_footer = true; - $this->display_footer_actions = false; - } - parent::__construct( $args ); - } - - public function before() { - $name = $this->upgrader->get_name_for_update( $this->language_update ); - - echo '
'; - - printf( '

' . __( 'Updating translations for %1$s (%2$s)…' ) . '

', $name, $this->language_update->language ); - } - - public function error( $error ) { - echo '
'; - parent::error( $error ); - echo '
'; - } - - public function after() { - echo '
'; - } - - public function bulk_footer() { - $this->decrement_update_count( 'translation' ); - $update_actions = array(); - $update_actions['updates_page'] = '' . __( 'Return to WordPress Updates' ) . ''; - - /** - * Filter the list of action links available following a translations update. - * - * @since 3.7.0 - * - * @param array $update_actions Array of translations update links. - */ - $update_actions = apply_filters( 'update_translations_complete_actions', $update_actions ); - - if ( $update_actions && $this->display_footer_actions ) - $this->feedback( implode( ' | ', $update_actions ) ); - } -} - -/** - * Upgrader Skin for Automatic WordPress Upgrades - * - * This skin is designed to be used when no output is intended, all output - * is captured and stored for the caller to process and log/email/discard. - * - * @package WordPress - * @subpackage Upgrader - * @since 3.7.0 - */ -class Automatic_Upgrader_Skin extends WP_Upgrader_Skin { - protected $messages = array(); - - public function request_filesystem_credentials( $error = false, $context = '' ) { - if ( $context ) - $this->options['context'] = $context; - // TODO: fix up request_filesystem_credentials(), or split it, to allow us to request a no-output version - // This will output a credentials form in event of failure, We don't want that, so just hide with a buffer - ob_start(); - $result = parent::request_filesystem_credentials( $error ); - ob_end_clean(); - return $result; - } +_deprecated_file( basename( __FILE__ ), '4.7.0', 'class-wp-upgrader.php' ); - public function get_upgrade_messages() { - return $this->messages; - } +/** WP_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader-skin.php'; - public function feedback( $data ) { - if ( is_wp_error( $data ) ) - $string = $data->get_error_message(); - else if ( is_array( $data ) ) - return; - else - $string = $data; +/** Plugin_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader-skin.php'; - if ( ! empty( $this->upgrader->strings[ $string ] ) ) - $string = $this->upgrader->strings[ $string ]; +/** Theme_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader-skin.php'; - if ( strpos( $string, '%' ) !== false ) { - $args = func_get_args(); - $args = array_splice( $args, 1 ); - if ( ! empty( $args ) ) - $string = vsprintf( $string, $args ); - } +/** Bulk_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-bulk-upgrader-skin.php'; - $string = trim( $string ); +/** Bulk_Plugin_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-bulk-plugin-upgrader-skin.php'; - // Only allow basic HTML in the messages, as it'll be used in emails/logs rather than direct browser output. - $string = wp_kses( $string, array( - 'a' => array( - 'href' => true - ), - 'br' => true, - 'em' => true, - 'strong' => true, - ) ); +/** Bulk_Theme_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-bulk-theme-upgrader-skin.php'; - if ( empty( $string ) ) - return; +/** Plugin_Installer_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-plugin-installer-skin.php'; - $this->messages[] = $string; - } +/** Theme_Installer_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-theme-installer-skin.php'; - public function header() { - ob_start(); - } +/** Language_Pack_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader-skin.php'; - public function footer() { - $output = ob_get_contents(); - if ( ! empty( $output ) ) - $this->feedback( $output ); - ob_end_clean(); - } +/** Automatic_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-automatic-upgrader-skin.php'; - public function bulk_header() {} - public function bulk_footer() {} - public function before() {} - public function after() {} -} +/** WP_Ajax_Upgrader_Skin class */ +require_once ABSPATH . 'wp-admin/includes/class-wp-ajax-upgrader-skin.php';