Wordpress 4.6
[autoinstalls/wordpress.git] / wp-admin / includes / class-wp-upgrader-skins.php
index c9d32cebe8c5fa6cd93e85afdae8f02519a9d5af..8b2789da0c090c0b43bbec5b37570423e64b039d 100644 (file)
  * @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 $options = array();
-
-       /**
-        *
-        * @param array $args
-        */
-       public function __construct($args = array()) {
-               $defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false );
-               $this->options = wp_parse_args($args, $defaults);
-       }
-
-       /**
-        * @param WP_Upgrader $upgrader
-        */
-       public function set_upgrader(&$upgrader) {
-               if ( is_object($upgrader) )
-                       $this->upgrader =& $upgrader;
-               $this->add_strings();
-       }
-
-       /**
-        * @access public
-        */
-       public function add_strings() {
-       }
-
-       /**
-        *
-        * @param string|false|WP_Error $result
-        */
-       public function set_result($result) {
-               $this->result = $result;
-       }
-
-       /**
-        *
-        * @param bool   $error
-        * @param string $context
-        * @param bool   $allow_relaxed_file_ownership
-        * @return type
-        */
-       public function request_filesystem_credentials( $error = false, $context = false, $allow_relaxed_file_ownership = false ) {
-               $url = $this->options['url'];
-               if ( ! $context ) {
-                       $context = $this->options['context'];
-               }
-               if ( !empty($this->options['nonce']) ) {
-                       $url = wp_nonce_url($url, $this->options['nonce']);
-               }
-
-               $extra_fields = array();
-
-               return request_filesystem_credentials( $url, '', $error, $context, $extra_fields, $allow_relaxed_file_ownership );
-       }
-
-       /**
-        * @access public
-        */
-       public function header() {
-               if ( $this->done_header ) {
-                       return;
-               }
-               $this->done_header = true;
-               echo '<div class="wrap">';
-               echo '<h1>' . $this->options['title'] . '</h1>';
-       }
-
-       /**
-        * @access public
-        */
-       public function footer() {
-               if ( $this->done_footer ) {
-                       return;
-               }
-               $this->done_footer = true;
-               echo '</div>';
-       }
-
-       /**
-        *
-        * @param string|WP_Error $errors
-        */
-       public function error($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);
-                       }
-               }
-       }
-
-       /**
-        *
-        * @param string $string
-        */
-       public function feedback($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);
-       }
-
-       /**
-        * @access public
-        */
-       public function before() {}
-
-       /**
-        * @access public
-        */
-       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 '<script type="text/javascript">
-                                       if ( window.postMessage && JSON ) {
-                                               window.parent.postMessage( JSON.stringify( { action: "decrementUpdateCount", upgradeType: "' . $type . '" } ), window.location.protocol + "//" + window.location.hostname );
-                                       }
-                               </script>';
-               } else {
-                       echo '<script type="text/javascript">
-                                       (function( wp ) {
-                                               if ( wp && wp.updates.decrementCount ) {
-                                                       wp.updates.decrementCount( "' . $type . '" );
-                                               }
-                                       })( window.wp );
-                               </script>';
-               }
-       }
-
-       /**
-        * @access public
-        */
-       public function bulk_header() {}
-
-       /**
-        * @access public
-        */
-       public function bulk_footer() {}
-}
-
-/**
- * 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;
-
-       /**
-        *
-        * @param array $args
-        */
-       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);
-       }
-
-       /**
-        * @access public
-        */
-       public function after() {
-               $this->plugin = $this->upgrader->plugin_info();
-               if ( !empty($this->plugin) && !is_wp_error($this->result) && $this->plugin_active ){
-                       // Currently used only when JS is off for a single plugin update?
-                       echo '<iframe title="' . esc_attr__( 'Update progress' ) . '" style="border:0;overflow:hidden" width="100%" height="170" src="' . wp_nonce_url( 'update.php?action=activate-plugin&networkwide=' . $this->plugin_network_active . '&plugin=' . urlencode( $this->plugin ), 'activate-plugin_' . $this->plugin ) . '"></iframe>';
-               }
-
-               $this->decrement_update_count( 'plugin' );
-
-               $update_actions =  array(
-                       'activate_plugin' => '<a href="' . wp_nonce_url( 'plugins.php?action=activate&amp;plugin=' . urlencode( $this->plugin ), 'activate-plugin_' . $this->plugin) . '" target="_parent">' . __( 'Activate Plugin' ) . '</a>',
-                       'plugins_page' => '<a href="' . self_admin_url( 'plugins.php' ) . '" target="_parent">' . __( 'Return to Plugins page' ) . '</a>'
-               );
-               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;
-       /**
-        * @var string|false
-        */
-       public $error = false;
-
-       /**
-        *
-        * @param array $args
-        */
-       public function __construct($args = array()) {
-               $defaults = array( 'url' => '', 'nonce' => '' );
-               $args = wp_parse_args($args, $defaults);
-
-               parent::__construct($args);
-       }
-
-       /**
-        * @access public
-        */
-       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.');
-               /* translators: 1: Title of an update, 2: Error message */
-               $this->upgrader->strings['skin_update_failed_error'] = __('An error occurred while updating %1$s: %2$s');
-               /* translators: 1: Title of an update */
-               $this->upgrader->strings['skin_update_failed'] = __('The update of %1$s failed.');
-               /* translators: 1: Title of an update */
-               $this->upgrader->strings['skin_update_successful'] = __( '%1$s updated successfully.' ) . ' <a onclick="%2$s" href="#" class="hide-if-no-js"><span>' . __( 'Show Details' ) . '</span><span class="hidden">' . __( 'Hide Details' ) . '</span></a>';
-               $this->upgrader->strings['skin_upgrade_end'] = __('All updates have been completed.');
-       }
-
-       /**
-        * @param string $string
-        */
-       public function feedback($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<br />\n";
-               else
-                       echo "<p>$string</p>\n";
-       }
-
-       /**
-        * @access public
-        */
-       public function header() {
-               // Nothing, This will be displayed within a iframe.
-       }
-
-       /**
-        * @access public
-        */
-       public function footer() {
-               // Nothing, This will be displayed within a iframe.
-       }
-
-       /**
-        *
-        * @param string|WP_Error $error
-        */
-       public function error($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(', ', $messages);
-               }
-               echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').hide();</script>';
-       }
-
-       /**
-        * @access public
-        */
-       public function bulk_header() {
-               $this->feedback('skin_upgrade_start');
-       }
-
-       /**
-        * @access public
-        */
-       public function bulk_footer() {
-               $this->feedback('skin_upgrade_end');
-       }
-
-       /**
-        *
-        * @param string $title
-        */
-       public function before($title = '') {
-               $this->in_loop = true;
-               printf( '<h2>' . $this->upgrader->strings['skin_before_update_header'] . ' <span class="spinner waiting-' . $this->upgrader->update_current . '"></span></h2>', $title, $this->upgrader->update_current, $this->upgrader->update_count );
-               echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').css("display", "inline-block");</script>';
-               echo '<div class="update-messages hide-if-js" id="progress-' . esc_attr($this->upgrader->update_current) . '"><p>';
-               $this->flush_output();
-       }
-
-       /**
-        *
-        * @param string $title
-        */
-       public function after($title = '') {
-               echo '</p></div>';
-               if ( $this->error || ! $this->result ) {
-                       if ( $this->error ) {
-                               echo '<div class="error"><p>' . sprintf($this->upgrader->strings['skin_update_failed_error'], $title, '<strong>' . $this->error . '</strong>' ) . '</p></div>';
-                       } else {
-                               echo '<div class="error"><p>' . sprintf($this->upgrader->strings['skin_update_failed'], $title) . '</p></div>';
-                       }
-
-                       echo '<script type="text/javascript">jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').show();</script>';
-               }
-               if ( $this->result && ! is_wp_error( $this->result ) ) {
-                       if ( ! $this->error )
-                               echo '<div class="updated"><p>' . sprintf($this->upgrader->strings['skin_update_successful'], $title, 'jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').toggle();jQuery(\'span\', this).toggle(); return false;') . '</p></div>';
-                       echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').hide();</script>';
-               }
-
-               $this->reset();
-               $this->flush_output();
-       }
-
-       /**
-        * @access public
-        */
-       public function reset() {
-               $this->in_loop = false;
-               $this->error = false;
-       }
-
-       /**
-        * @access public
-        */
-       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 add_strings() {
-               parent::add_strings();
-               $this->upgrader->strings['skin_before_update_header'] = __('Updating Plugin %1$s (%2$d/%3$d)');
-       }
-
-       /**
-        *
-        * @param string $title
-        */
-       public function before($title = '') {
-               parent::before($this->plugin_info['Title']);
-       }
-
-       /**
-        *
-        * @param string $title
-        */
-       public function after($title = '') {
-               parent::after($this->plugin_info['Title']);
-               $this->decrement_update_count( 'plugin' );
-       }
-
-       /**
-        * @access public
-        */
-       public function bulk_footer() {
-               parent::bulk_footer();
-               $update_actions =  array(
-                       'plugins_page' => '<a href="' . self_admin_url( 'plugins.php' ) . '" target="_parent">' . __( 'Return to Plugins page' ) . '</a>',
-                       'updates_page' => '<a href="' . self_admin_url( 'update-core.php' ) . '" target="_parent">' . __( 'Return to WordPress Updates page' ) . '</a>'
-               );
-               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 add_strings() {
-               parent::add_strings();
-               $this->upgrader->strings['skin_before_update_header'] = __('Updating Theme %1$s (%2$d/%3$d)');
-       }
-
-       /**
-        *
-        * @param string $title
-        */
-       public function before($title = '') {
-               parent::before( $this->theme_info->display('Name') );
-       }
-
-       /**
-        *
-        * @param string $title
-        */
-       public function after($title = '') {
-               parent::after( $this->theme_info->display('Name') );
-               $this->decrement_update_count( 'theme' );
-       }
-
-       /**
-        * @access public
-        */
-       public function bulk_footer() {
-               parent::bulk_footer();
-               $update_actions =  array(
-                       'themes_page' => '<a href="' . self_admin_url( 'themes.php' ) . '" target="_parent">' . __( 'Return to Themes page' ) . '</a>',
-                       'updates_page' => '<a href="' . self_admin_url( 'update-core.php' ) . '" target="_parent">' . __( 'Return to WordPress Updates page' ) . '</a>'
-               );
-               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;
-
-       /**
-        *
-        * @param array $args
-        */
-       public function __construct($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);
-       }
-
-       /**
-        * @access public
-        */
-       public function before() {
-               if ( !empty($this->api) )
-                       $this->upgrader->strings['process_success'] = sprintf( __('Successfully installed the plugin <strong>%s %s</strong>.'), $this->api->name, $this->api->version);
-       }
-
-       /**
-        * @access public
-        */
-       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'] = '<a href="' . wp_nonce_url( 'plugins.php?action=activate&amp;from=import&amp;plugin=' . urlencode( $plugin_file ), 'activate-plugin_' . $plugin_file ) . '" target="_parent">' . __( 'Activate Plugin &amp; Run Importer' ) . '</a>';
-               else
-                       $install_actions['activate_plugin'] = '<a href="' . wp_nonce_url( 'plugins.php?action=activate&amp;plugin=' . urlencode( $plugin_file ), 'activate-plugin_' . $plugin_file ) . '" target="_parent">' . __( 'Activate Plugin' ) . '</a>';
-
-               if ( is_multisite() && current_user_can( 'manage_network_plugins' ) ) {
-                       $install_actions['network_activate'] = '<a href="' . wp_nonce_url( 'plugins.php?action=activate&amp;networkwide=1&amp;plugin=' . urlencode( $plugin_file ), 'activate-plugin_' . $plugin_file ) . '" target="_parent">' . __( 'Network Activate' ) . '</a>';
-                       unset( $install_actions['activate_plugin'] );
-               }
-
-               if ( 'import' == $from ) {
-                       $install_actions['importers_page'] = '<a href="' . admin_url( 'import.php' ) . '" target="_parent">' . __( 'Return to Importers' ) . '</a>';
-               } elseif ( $this->type == 'web' ) {
-                       $install_actions['plugins_page'] = '<a href="' . self_admin_url( 'plugin-install.php' ) . '" target="_parent">' . __( 'Return to Plugin Installer' ) . '</a>';
-               } else {
-                       $install_actions['plugins_page'] = '<a href="' . self_admin_url( 'plugins.php' ) . '" target="_parent">' . __( 'Return to Plugins page' ) . '</a>';
-               }
-
-               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;
-
-       /**
-        *
-        * @param array $args
-        */
-       public function __construct($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);
-       }
-
-       /**
-        * @access public
-        */
-       public function before() {
-               if ( !empty($this->api) )
-                       $this->upgrader->strings['process_success'] = sprintf( $this->upgrader->strings['process_success_specific'], $this->api->name, $this->api->version);
-       }
-
-       /**
-        * @access public
-        */
-       public function after() {
-               if ( empty($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();
-
-               $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();
-
-               if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
-                       $install_actions['preview'] = '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Live Preview' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Live Preview &#8220;%s&#8221;' ), $name ) . '</span></a>';
-               }
-               $install_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink"><span aria-hidden="true">' . __( 'Activate' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Activate &#8220;%s&#8221;' ), $name ) . '</span></a>';
-
-               if ( is_network_admin() && current_user_can( 'manage_network_themes' ) )
-                       $install_actions['network_enable'] = '<a href="' . esc_url( wp_nonce_url( 'themes.php?action=enable&amp;theme=' . urlencode( $stylesheet ), 'enable-theme_' . $stylesheet ) ) . '" target="_parent">' . __( 'Network Enable' ) . '</a>';
-
-               if ( $this->type == 'web' )
-                       $install_actions['themes_page'] = '<a href="' . self_admin_url( 'theme-install.php' ) . '" target="_parent">' . __( 'Return to Theme Installer' ) . '</a>';
-               elseif ( current_user_can( 'switch_themes' ) || current_user_can( 'edit_theme_options' ) )
-                       $install_actions['themes_page'] = '<a href="' . self_admin_url( 'themes.php' ) . '" target="_parent">' . __( 'Return to Themes page' ) . '</a>';
-
-               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 = '';
-
-       /**
-        *
-        * @param array $args
-        */
-       public function __construct($args = array()) {
-               $defaults = array( 'url' => '', 'theme' => '', 'nonce' => '', 'title' => __('Update Theme') );
-               $args = wp_parse_args($args, $defaults);
-
-               $this->theme = $args['theme'];
-
-               parent::__construct($args);
-       }
-
-       /**
-        * @access public
-        */
-       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();
-
-                       $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']  = '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Customize' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Customize &#8220;%s&#8221;' ), $name ) . '</span></a>';
-                               }
-                       } elseif ( current_user_can( 'switch_themes' ) ) {
-                               if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
-                                       $update_actions['preview'] = '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Live Preview' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Live Preview &#8220;%s&#8221;' ), $name ) . '</span></a>';
-                               }
-                               $update_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink"><span aria-hidden="true">' . __( 'Activate' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Activate &#8220;%s&#8221;' ), $name ) . '</span></a>';
-                       }
-
-                       if ( ! $this->result || is_wp_error( $this->result ) || is_network_admin() )
-                               unset( $update_actions['preview'], $update_actions['activate'] );
-               }
-
-               $update_actions['themes_page'] = '<a href="' . self_admin_url( 'themes.php' ) . '" target="_parent">' . __( 'Return to Themes page' ) . '</a>';
-
-               /**
-                * 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;
-
-       /**
-        *
-        * @param array $args
-        */
-       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 );
-       }
-
-       /**
-        * @access public
-        */
-       public function before() {
-               $name = $this->upgrader->get_name_for_update( $this->language_update );
-
-               echo '<div class="update-messages lp-show-latest">';
-
-               printf( '<h2>' . __( 'Updating translations for %1$s (%2$s)&#8230;' ) . '</h2>', $name, $this->language_update->language );
-       }
-
-       /**
-        *
-        * @param string|WP_Error $error
-        */
-       public function error( $error ) {
-               echo '<div class="lp-error">';
-               parent::error( $error );
-               echo '</div>';
-       }
-
-       /**
-        * @access public
-        */
-       public function after() {
-               echo '</div>';
-       }
-
-       /**
-        * @access public
-        */
-       public function bulk_footer() {
-               $this->decrement_update_count( 'translation' );
-               $update_actions = array();
-               $update_actions['updates_page'] = '<a href="' . self_admin_url( 'update-core.php' ) . '" target="_parent">' . __( 'Return to WordPress Updates page' ) . '</a>';
-
-               /**
-                * 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();
+/** WP_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader-skin.php';
 
-       /**
-        *
-        * @param bool   $error
-        * @param string $context
-        * @param bool   $allow_relaxed_file_ownership
-        * @return bool
-        */
-       public function request_filesystem_credentials( $error = false, $context = '', $allow_relaxed_file_ownership = false ) {
-               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, $context, $allow_relaxed_file_ownership );
-               ob_end_clean();
-               return $result;
-       }
+/** Plugin_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader-skin.php';
 
-       /**
-        * @access public
-        *
-        * @return array
-        */
-       public function get_upgrade_messages() {
-               return $this->messages;
-       }
+/** Theme_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader-skin.php';
 
-       /**
-        * @param string|array|WP_Error $data
-        */
-       public function feedback( $data ) {
-               if ( is_wp_error( $data ) ) {
-                       $string = $data->get_error_message();
-               } elseif ( is_array( $data ) ) {
-                       return;
-               } else {
-                       $string = $data;
-               }
-               if ( ! empty( $this->upgrader->strings[ $string ] ) )
-                       $string = $this->upgrader->strings[ $string ];
+/** Bulk_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-bulk-upgrader-skin.php';
 
-               if ( strpos( $string, '%' ) !== false ) {
-                       $args = func_get_args();
-                       $args = array_splice( $args, 1 );
-                       if ( ! empty( $args ) )
-                               $string = vsprintf( $string, $args );
-               }
+/** Bulk_Plugin_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-bulk-plugin-upgrader-skin.php';
 
-               $string = trim( $string );
+/** Bulk_Theme_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-bulk-theme-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,
-               ) );
+/** Plugin_Installer_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-plugin-installer-skin.php';
 
-               if ( empty( $string ) )
-                       return;
+/** Theme_Installer_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-theme-installer-skin.php';
 
-               $this->messages[] = $string;
-       }
+/** Language_Pack_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader-skin.php';
 
-       /**
-        * @access public
-        */
-       public function header() {
-               ob_start();
-       }
+/** Automatic_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-automatic-upgrader-skin.php';
 
-       /**
-        * @access public
-        */
-       public function footer() {
-               $output = ob_get_clean();
-               if ( ! empty( $output ) )
-                       $this->feedback( $output );
-       }
-}
+/** WP_Ajax_Upgrader_Skin class */
+require_once ABSPATH . 'wp-admin/includes/class-wp-ajax-upgrader-skin.php';