<?php
/**
* Upgrader API: Theme_Installer_Skin class
*
* @package WordPress
* @subpackage Upgrader
* @since 4.6.0
*/
/**
* Theme Installer Skin for the WordPress Theme Installer.
*
* @since 2.8.0
* @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.
*
* @see WP_Upgrader_Skin
*/
class Theme_Installer_Skin extends WP_Upgrader_Skin {
public $api;
public $type;
public $url;
public $overwrite;
private $is_downgrading = false;
/**
* Constructor.
*
* Sets up the theme installer skin.
*
* @since 2.8.0
*
* @param array $args
*/
public function __construct( $args = array() ) {
$defaults = array(
'type' => 'web',
'url' => '',
'theme' => '',
'nonce' => '',
'title' => '',
'overwrite' => '',
);
$args = wp_parse_args( $args, $defaults );
$this->type = $args['type'];
$this->url = $args['url'];
$this->api = isset( $args['api'] ) ? $args['api'] : array();
$this->overwrite = $args['overwrite'];
parent::__construct( $args );
}
/**
* Performs an action before installing a theme.
*
* @since 2.8.0
*/
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
);
}
}
/**
* Hides the `process_failed` error when updating a theme by uploading a zip file.
*
* @since 5.5.0
*
* @param WP_Error $wp_error WP_Error object.
* @return bool True if the error should be hidden, false otherwise.
*/
public function hide_process_failed( $wp_error ) {
if (
'upload' === $this->type &&
'' === $this->overwrite &&
$wp_error->get_error_code() === 'folder_exists'
) {
return true;
}
return false;
}
/**
* Performs an action following a single theme install.
*
* @since 2.8.0
*/
public function after() {
if ( $this->do_overwrite() ) {
return;
}
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' ) && ! $theme_info->is_block_theme() ) {
$customize_url = add_query_arg(
array(
'theme' => urlencode( $stylesheet ),
'return' => urlencode( admin_url( 'web' === $this->type ? 'theme-install.php' : 'themes.php' ) ),
),
admin_url( 'customize.php' )
);
$install_actions['preview'] = sprintf(
'<a href="%s" class="hide-if-no-customize load-customize">' .
'<span aria-hidden="true">%s</span><span class="screen-reader-text">%s</span></a>',
esc_url( $customize_url ),
__( 'Live Preview' ),
/* translators: Hidden accessibility text. %s: Theme name. */
sprintf( __( 'Live Preview “%s”' ), $name )
);
}
$install_actions['activate'] = sprintf(
'<a href="%s" class="activatelink">' .
'<span aria-hidden="true">%s</span><span class="screen-reader-text">%s</span></a>',
esc_url( $activate_link ),
_x( 'Activate', 'theme' ),
/* translators: Hidden accessibility text. %s: Theme name. */
sprintf( _x( 'Activate “%s”', 'theme' ), $name )
);
if ( is_network_admin() && current_user_can( 'manage_network_themes' ) ) {
$install_actions['network_enable'] = sprintf(
'<a href="%s" target="_parent">%s</a>',
esc_url( wp_nonce_url( 'themes.php?action=enable&theme=' . urlencode( $stylesheet ), 'enable-theme_' . $stylesheet ) ),
__( 'Network Enable' )
);
}
if ( 'web' === $this->type ) {
$install_actions['themes_page'] = sprintf(
'<a href="%s" target="_parent">%s</a>',
self_admin_url( 'theme-install.php' ),
__( 'Go to Theme Installer' )
);
} elseif ( current_user_can( 'switch_themes' ) || current_user_can( 'edit_theme_options' ) ) {
$install_actions['themes_page'] = sprintf(
'<a href="%s" target="_parent">%s</a>',
self_admin_url( 'themes.php' ),
__( 'Go 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'] );
} elseif ( get_option( 'template' ) === $stylesheet ) {
unset( $install_actions['activate'] );
}
/**
* Filters the list of action links available following a single theme installation.
*
* @since 2.8.0
*
* @param string[] $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 ) );
}
}
/**
* Checks if the theme can be overwritten and outputs the HTML for overwriting a theme on upload.
*
* @since 5.5.0
*
* @return bool Whether the theme can be overwritten and HTML was outputted.
*/
private function do_overwrite() {
if ( 'upload' !== $this->type || ! is_wp_error( $this->result ) || 'folder_exists' !== $this->result->get_error_code() ) {
return false;
}
$folder = $this->result->get_error_data( 'folder_exists' );
$folder = rtrim( $folder, '/' );
$current_theme_data = false;
$all_themes = wp_get_themes( array( 'errors' => null ) );
foreach ( $all_themes as $theme ) {
$stylesheet_dir = wp_normalize_path( $theme->get_stylesheet_directory() );
if ( rtrim( $stylesheet_dir, '/' ) !== $folder ) {
continue;
}
$current_theme_data = $theme;
}
$new_theme_data = $this->upgrader->new_theme_data;
if ( ! $current_theme_data || ! $new_theme_data ) {
return false;
}
echo '<h2 class="update-from-upload-heading">' . esc_html__( 'This theme is already installed.' ) . '</h2>';
// Check errors for active theme.
if ( is_wp_error( $current_theme_data->errors() ) ) {
$this->feedback( 'current_theme_has_errors', $current_theme_data->errors()->get_error_message() );
}
$this->is_downgrading = version_compare( $current_theme_data['Version'], $new_theme_data['Version'], '>' );
$is_invalid_parent = false;
if ( ! empty( $new_theme_data['Template'] ) ) {
$is_invalid_parent = ! in_array( $new_theme_data['Template'], array_keys( $all_themes ), true );
}
$rows = array(
'Name' => __( 'Theme name' ),
'Version' => __( 'Version' ),
'Author' => __( 'Author' ),
'RequiresWP' => __( 'Required WordPress version' ),
'RequiresPHP' => __( 'Required PHP version' ),
'Template' => __( 'Parent theme' ),
);
$table = '<table class="update-from-upload-comparison"><tbody>';
$table .= '<tr><th></th><th>' . esc_html_x( 'Active', 'theme' ) . '</th><th>' . esc_html_x( 'Uploaded', 'theme' ) . '</th></tr>';
$is_same_theme = true; // Let's consider only these rows.
foreach ( $rows as $field => $label ) {
$old_value = $current_theme_data->display( $field, false );
$old_value = $old_value ? (string) $old_value : '-';
$new_value = ! empty( $new_theme_data[ $field ] ) ? (string) $new_theme_data[ $field ] : '-';
if ( $old_value === $new_value && '-' === $new_value && 'Template' === $field ) {
continue;
}
$is_same_theme = $is_same_theme && ( $old_value === $new_value );
$diff_field = ( 'Version' !== $field && $new_value !== $old_value );
$diff_version = ( 'Version' === $field && $this->is_downgrading );
$invalid_parent = false;
if ( 'Template' === $field && $is_invalid_parent ) {
$invalid_parent = true;
$new_value .= ' ' . __( '(not found)' );
}
$table .= '<tr><td class="name-label">' . $label . '</td><td>' . wp_strip_all_tags( $old_value ) . '</td>';
$table .= ( $diff_field || $diff_version || $invalid_parent ) ? '<td class="warning">' : '<td>';
$table .= wp_strip_all_tags( $new_value ) . '</td></tr>';
}
$table .= '</tbody></table>';
/**
* Filters the compare table output for overwriting a theme package on upload.
*
* @since 5.5.0
*
* @param string $table The output table with Name, Version, Author, RequiresWP, and RequiresPHP info.
* @param WP_Theme $current_theme_data Active theme data.
* @param array $new_theme_data Array with uploaded theme data.
*/
echo apply_filters( 'install_theme_overwrite_comparison', $table, $current_theme_data, $new_theme_data );
$install_actions = array();
$can_update = true;
$blocked_message = '<p>' . esc_html__( 'The theme cannot be updated due to the following:' ) . '</p>';
$blocked_message .= '<ul class="ul-disc">';
$requires_php = isset( $new_theme_data['RequiresPHP'] ) ? $new_theme_data['RequiresPHP'] : null;
$requires_wp = isset( $new_theme_data['RequiresWP'] ) ? $new_theme_data['RequiresWP'] : null;
if ( ! is_php_version_compatible( $requires_php ) ) {
$error = sprintf(
/* translators: 1: Current PHP version, 2: Version required by the uploaded theme. */
__( 'The PHP version on your server is %1$s, however the uploaded theme requires %2$s.' ),
PHP_VERSION,
$requires_php
);
$blocked_message .= '<li>' . esc_html( $error ) . '</li>';
$can_update = false;
}
if ( ! is_wp_version_compatible( $requires_wp ) ) {
$error = sprintf(
/* translators: 1: Current WordPress version, 2: Version required by the uploaded theme. */
__( 'Your WordPress version is %1$s, however the uploaded theme requires %2$s.' ),
get_bloginfo( 'version' ),
$requires_wp
);
$blocked_message .= '<li>' . esc_html( $error ) . '</li>';
$can_update = false;
}
$blocked_message .= '</ul>';
if ( $can_update ) {
if ( $this->is_downgrading ) {
$warning = sprintf(
/* translators: %s: Documentation URL. */
__( 'You are uploading an older version of the active theme. You can continue to install the older version, but be sure to <a href="%s">back up your database and files</a> first.' ),
__( 'https://developer.wordpress.org/advanced-administration/security/backup/' )
);
} else {
$warning = sprintf(
/* translators: %s: Documentation URL. */
__( 'You are updating a theme. Be sure to <a href="%s">back up your database and files</a> first.' ),
__( 'https://developer.wordpress.org/advanced-administration/security/backup/' )
);
}
echo '<p class="update-from-upload-notice">' . $warning . '</p>';
$overwrite = $this->is_downgrading ? 'downgrade-theme' : 'update-theme';
$install_actions['overwrite_theme'] = sprintf(
'<a class="button button-primary update-from-upload-overwrite" href="%s" target="_parent">%s</a>',
wp_nonce_url( add_query_arg( 'overwrite', $overwrite, $this->url ), 'theme-upload' ),
_x( 'Replace active with uploaded', 'theme' )
);
} else {
echo $blocked_message;
}
$cancel_url = add_query_arg( 'action', 'upload-theme-cancel-overwrite', $this->url );
$install_actions['themes_page'] = sprintf(
'<a class="button" href="%s" target="_parent">%s</a>',
wp_nonce_url( $cancel_url, 'theme-upload-cancel-overwrite' ),
__( 'Cancel and go back' )
);
/**
* Filters the list of action links available following a single theme installation failure
* when overwriting is allowed.
*
* @since 5.5.0
*
* @param string[] $install_actions Array of theme action links.
* @param object $api Object containing WordPress.org API theme data.
* @param array $new_theme_data Array with uploaded theme data.
*/
$install_actions = apply_filters( 'install_theme_overwrite_actions', $install_actions, $this->api, $new_theme_data );
if ( ! empty( $install_actions ) ) {
printf(
'<p class="update-from-upload-expired hidden">%s</p>',
__( 'The uploaded file has expired. Please go back and upload it again.' )
);
echo '<p class="update-from-upload-actions">' . implode( ' ', (array) $install_actions ) . '</p>';
}
return true;
}
}