ated data. We are doing so now as it is safe to do. However, as
* Name and Title could have been used as the key for get_themes(), both remain
* untranslated for back compatibility. This means that ['Name'] is not ideal,
* and care should be taken to use `$theme::display( 'Name' )` to get a properly
* translated header.
*
* @since 3.4.0
*
* @param mixed $offset
* @return mixed
*/
#[ReturnTypeWillChange]
public function offsetGet( $offset ) {
switch ( $offset ) {
case 'Name':
case 'Title':
/*
* See note above about using translated data. get() is not ideal.
* It is only for backward compatibility. Use display().
*/
return $this->get( 'Name' );
case 'Author':
return $this->display( 'Author' );
case 'Author Name':
return $this->display( 'Author', false );
case 'Author URI':
return $this->display( 'AuthorURI' );
case 'Description':
return $this->display( 'Description' );
case 'Version':
case 'Status':
return $this->get( $offset );
case 'Template':
return $this->get_template();
case 'Stylesheet':
return $this->get_stylesheet();
case 'Template Files':
return $this->get_files( 'php', 1, true );
case 'Stylesheet Files':
return $this->get_files( 'css', 0, false );
case 'Template Dir':
return $this->get_template_directory();
case 'Stylesheet Dir':
return $this->get_stylesheet_directory();
case 'Screenshot':
return $this->get_screenshot( 'relative' );
case 'Tags':
return $this->get( 'Tags' );
case 'Theme Root':
return $this->get_theme_root();
case 'Theme Root URI':
return $this->get_theme_root_uri();
case 'Parent Theme':
return $this->parent() ? $this->parent()->get( 'Name' ) : '';
default:
return null;
}
}
/**
* Returns errors property.
*
* @since 3.4.0
*
* @return WP_Error|false WP_Error if there are errors, or false.
*/
public function errors() {
return is_wp_error( $this->errors ) ? $this->errors : false;
}
/**
* Determines whether the theme exists.
*
* A theme with errors exists. A theme with the error of 'theme_not_found',
* meaning that the theme's directory was not found, does not exist.
*
* @since 3.4.0
*
* @return bool Whether the theme exists.
*/
public function exists() {
return ! ( $this->errors() && in_array( 'theme_not_found', $this->errors()->get_error_codes(), true ) );
}
/**
* Returns reference to the parent theme.
*
* @since 3.4.0
*
* @return WP_Theme|false Parent theme, or false if the active theme is not a child theme.
*/
public function parent() {
return isset( $this->parent ) ? $this->parent : false;
}
/**
* Perform reinitialization tasks.
*
* Prevents a callback from being injected during unserialization of an object.
*/
public function __wakeup() {
if ( $this->parent && ! $this->parent instanceof self ) {
throw new UnexpectedValueException();
}
if ( $this->headers && ! is_array( $this->headers ) ) {
throw new UnexpectedValueException();
}
foreach ( $this->headers as $value ) {
if ( ! is_string( $value ) ) {
throw new UnexpectedValueException();
}
}
$this->headers_sanitized = array();
}
/**
* Adds theme data to cache.
*
* Cache entries keyed by the theme and the type of data.
*
* @since 3.4.0
*
* @param string $key Type of data to store (theme, screenshot, headers, post_templates)
* @param array|string $data Data to store
* @return bool Return value from wp_cache_add()
*/
private function cache_add( $key, $data ) {
return wp_cache_add( $key . '-' . $this->cache_hash, $data, 'themes', self::$cache_expiration );
}
/**
* Gets theme data from cache.
*
* Cache entries are keyed by the theme and the type of data.
*
* @since 3.4.0
*
* @param string $key Type of data to retrieve (theme, screenshot, headers, post_templates)
* @return mixed Retrieved data
*/
private function cache_get( $key ) {
return wp_cache_get( $key . '-' . $this->cache_hash, 'themes' );
}
/**
* Clears the cache for the theme.
*
* @since 3.4.0
*/
public function cache_delete() {
foreach ( array( 'theme', 'screenshot', 'headers', 'post_templates' ) as $key ) {
wp_cache_delete( $key . '-' . $this->cache_hash, 'themes' );
}
$this->template = null;
$this->textdomain_loaded = null;
$this->theme_root_uri = null;
$this->parent = null;
$this->errors = null;
$this->headers_sanitized = null;
$this->name_translated = null;
$this->block_theme = null;
$this->block_template_folders = null;
$this->headers = array();
$this->__construct( $this->stylesheet, $this->theme_root );
$this->delete_pattern_cache();
}
/**
* Gets a raw, unformatted theme header.
*
* The header is sanitized, but is not translated, and is not marked up for display.
* To get a theme header for display, use the display() method.
*
* Use the get_template() method, not the 'Template' header, for finding the template.
* The 'Template' header is only good for what was written in the style.css, while
* get_template() takes into account where WordPress actually located the theme and
* whether it is actually valid.
*
* @since 3.4.0
*
* @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
* @return string|array|false String or array (for Tags header) on success, false on failure.
*/
public function get( $header ) {
if ( ! isset( $this->headers[ $header ] ) ) {
return false;
}
if ( ! isset( $this->headers_sanitized ) ) {
$this->headers_sanitized = $this->cache_get( 'headers' );
if ( ! is_array( $this->headers_sanitized ) ) {
$this->headers_sanitized = array();
}
}
if ( isset( $this->headers_sanitized[ $header ] ) ) {
return $this->headers_sanitized[ $header ];
}
// If themes are a persistent group, sanitize everything and cache it. One cache add is better than many cache sets.
if ( self::$persistently_cache ) {
foreach ( array_keys( $this->headers ) as $_header ) {
$this->headers_sanitized[ $_header ] = $this->sanitize_header( $_header, $this->headers[ $_header ] );
}
$this->cache_add( 'headers', $this->headers_sanitized );
} else {
$this->headers_sanitized[ $header ] = $this->sanitize_header( $header, $this->headers[ $header ] );
}
return $this->headers_sanitized[ $header ];
}
/**
* Gets a theme header, formatted and translated for display.
*
* @since 3.4.0
*
* @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
* @param bool $markup Optional. Whether to mark up the header. Defaults to true.
* @param bool $translate Optional. Whether to translate the header. Defaults to true.
* @return string|array|false Processed header. An array for Tags if `$markup` is false, string otherwise.
* False on failure.
*/
public function display( $header, $markup = true, $translate = true ) {
$value = $this->get( $header );
if ( false === $value ) {
return false;
}
if ( $translate && ( empty( $value ) || ! $this->load_textdomain() ) ) {
$translate = false;
}
if ( $translate ) {
$value = $this->translate_header( $header, $value );
}
if ( $markup ) {
$value = $this->markup_header( $header, $value, $translate );
}
return $value;
}
/**
* Sanitizes a theme header.
*
* @since 3.4.0
* @since 5.4.0 Added support for `Requires at least` and `Requires PHP` headers.
* @since 6.1.0 Added support for `Update URI` header.
*
* @param string $header Theme header. Accepts 'Name', 'Description', 'Author', 'Version',
* 'ThemeURI', 'AuthorURI', 'Status', 'Tags', 'RequiresWP', 'RequiresPHP',
* 'UpdateURI'.
* @param string $value Value to sanitize.
* @return string|array An array for Tags header, string otherwise.
*/
private function sanitize_header( $header, $value ) {
switch ( $header ) {
case 'Status':
if ( ! $value ) {
$value = 'publish';
break;
}
// Fall through otherwise.
case 'Name':
static $header_tags = array(
'abbr' => array( 'title' => true ),
'acronym' => array( 'title' => true ),
'code' => true,
'em' => true,
'strong' => true,
);
$value = wp_kses( $value, $header_tags );
break;
case 'Author':
// There shouldn't be anchor tags in Author, but some themes like to be challenging.
case 'Description':
static $header_tags_with_a = array(
'a' => array(
'href' => true,
'title' => true,
),
'abbr' => array( 'title' => true ),
'acronym' => array( 'title' => true ),
'code' => true,
'em' => true,
'strong' => true,
);
$value = wp_kses( $value, $header_tags_with_a );
break;
case 'ThemeURI':
case 'AuthorURI':
$value = sanitize_url( $value );
break;
case 'Tags':
$value = array_filter( array_map( 'trim', explode( ',', strip_tags( $value ) ) ) );
break;
case 'Version':
case 'RequiresWP':
case 'RequiresPHP':
case 'UpdateURI':
$value = strip_tags( $value );
break;
}
return $value;
}
/**
* Marks up a theme header.
*
* @since 3.4.0
*
* @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
* @param string|array $value Value to mark up. An array for Tags header, string otherwise.
* @param string $translate Whether the header has been translated.
* @return string Value, marked up.
*/
private function markup_header( $header, $value, $translate ) {
switch ( $header ) {
case 'Name':
if ( empty( $value ) ) {
$value = esc_html( $this->get_stylesheet() );
}
break;
case 'Description':
$value = wptexturize( $value );
break;
case 'Author':
if ( $this->get( 'AuthorURI' ) ) {
$value = sprintf( '%2$s', $this->display( 'AuthorURI', true, $translate ), $value );
} elseif ( ! $value ) {
$value = __( 'Anonymous' );
}
break;
case 'Tags':
static $comma = null;
if ( ! isset( $comma ) ) {
$comma = wp_get_list_item_separator();
}
$value = implode( $comma, $value );
break;
case 'ThemeURI':
case 'AuthorURI':
$value = esc_url( $value );
break;
}
return $value;
}
/**
* Translates a theme header.
*
* @since 3.4.0
*
* @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
* @param string|array $value Value to translate. An array for Tags header, string otherwise.
* @return string|array Translated value. An array for Tags header, string otherwise.
*/
private function translate_header( $header, $value ) {
switch ( $header ) {
case 'Name':
// Cached for sorting reasons.
if ( isset( $this->name_translated ) ) {
return $this->name_translated;
}
// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
$this->name_translated = translate( $value, $this->get( 'TextDomain' ) );
return $this->name_translated;
case 'Tags':
if ( empty( $value ) || ! function_exists( 'get_theme_feature_list' ) ) {
return $value;
}
static $tags_list;
if ( ! isset( $tags_list ) ) {
$tags_list = array(
// As of 4.6, deprecated tags which are only used to provide translation for older themes.
'black' => __( 'Black' ),
'blue' => __( 'Blue' ),
'brown' => __( 'Brown' ),
'gray' => __( 'Gray' ),
'green' => __( 'Green' ),
'orange' => __( 'Orange' ),
'pink' => __( 'Pink' ),
'purple' => __( 'Purple' ),
'red' => __( 'Red' ),
'silver' => __( 'Silver' ),
'tan' => __( 'Tan' ),
'white' => __( 'White' ),
'yellow' => __( 'Yellow' ),
'dark' => _x( 'Dark', 'color scheme' ),
'light' => _x( 'Light', 'color scheme' ),
'fixed-layout' => __( 'Fixed Layout' ),
'fluid-layout' => __( 'Fluid Layout' ),
'responsive-layout' => __( 'Responsive Layout' ),
'blavatar' => __( 'Blavatar' ),
'photoblogging' => __( 'Photoblogging' ),
'seasonal' => __( 'Seasonal' ),
);
$feature_list = get_theme_feature_list( false ); // No API.
foreach ( $feature_list as $tags ) {
$tags_list += $tags;
}
}
foreach ( $value as &$tag ) {
if ( isset( $tags_list[ $tag ] ) ) {
$tag = $tags_list[ $tag ];
} elseif ( isset( self::$tag_map[ $tag ] ) ) {
$tag = $tags_list[ self::$tag_map[ $tag ] ];
}
}
return $value;
default:
// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
$value = translate( $value, $this->get( 'TextDomain' ) );
}
return $value;
}
/**
* Returns the directory name of the theme's "stylesheet" files, inside the theme root.
*
* In the case of a child theme, this is directory name of the child theme.
* Otherwise, get_stylesheet() is the same as get_template().
*
* @since 3.4.0
*
* @return string Stylesheet
*/
public function get_stylesheet() {
return $this->stylesheet;
}
/**
* Returns the directory name of the theme's "template" files, inside the theme root.
*
* In the case of a child theme, this is the directory name of the parent theme.
* Otherwise, the get_template() is the same as get_stylesheet().
*
* @since 3.4.0
*
* @return string Template
*/
public function get_template() {
return $this->template;
}
/**
* Returns the absolute path to the directory of a theme's "stylesheet" files.
*
* In the case of a child theme, this is the absolute path to the directory
* of the child theme's files.
*
* @since 3.4.0
*
* @return string Absolute path of the stylesheet directory.
*/
public function get_stylesheet_directory() {
if ( $this->errors() && in_array( 'theme_root_missing', $this->errors()->get_error_codes(), true ) ) {
return '';
}
return $this->theme_root . '/' . $this->stylesheet;
}
/**
* Returns the absolute path to the directory of a theme's "template" files.
*
* In the case of a child theme, this is the absolute path to the directory
* of the parent theme's files.
*
* @since 3.4.0
*
* @return string Absolute path of the template directory.
*/
public function get_template_directory() {
if ( $this->parent() ) {
$theme_root = $this->parent()->theme_root;
} else {
$theme_root = $this->theme_root;
}
return $theme_root . '/' . $this->template;
}
/**
* Returns the URL to the directory of a theme's "stylesheet" files.
*
* In the case of a child theme, this is the URL to the directory of the
* child theme's files.
*
* @since 3.4.0
*
* @return string URL to the stylesheet directory.
*/
public function get_stylesheet_directory_uri() {
return $this->get_theme_root_uri() . '/' . str_replace( '%2F', '/', rawurlencode( $this->stylesheet ) );
}
/**
* Returns the URL to the directory of a theme's "template" files.
*
* In the case of a child theme, this is the URL to the directory of the
* parent theme's files.
*
* @since 3.4.0
*
* @return string URL to the template directory.
*/
public function get_template_directory_uri() {
if ( $this->parent() ) {
$theme_root_uri = $this->parent()->get_theme_root_uri();
} else {
$theme_root_uri = $this->get_theme_root_uri();
}
return $theme_root_uri . '/' . str_replace( '%2F', '/', rawurlencode( $this->template ) );
}
/**
* Returns the absolute path to the directory of the theme root.
*
* This is typically the absolute path to wp-content/themes.
*
* @since 3.4.0
*
* @return string Theme root.
*/
public function get_theme_root() {
return $this->theme_root;
}
/**
* Returns the URL to the directory of the theme root.
*
* This is typically the absolute URL to wp-content/themes. This forms the basis
* for all other URLs returned by WP_Theme, so we pass it to the public function
* get_theme_root_uri() and allow it to run the {@see 'theme_root_uri'} filter.
*
* @since 3.4.0
*
* @return string Theme root URI.
*/
public function get_theme_root_uri() {
if ( ! isset( $this->theme_root_uri ) ) {
$this->theme_root_uri = get_theme_root_uri( $this->stylesheet, $this->theme_root );
}
return $this->theme_root_uri;
}
/**
* Returns the main screenshot file for the theme.
*
* The main screenshot is called screenshot.png. gif and jpg extensions are also allowed.
*
* Screenshots for a theme must be in the stylesheet directory. (In the case of child
* themes, parent theme screenshots are not inherited.)
*
* @since 3.4.0
*
* @param string $uri Type of URL to return, either 'relative' or an absolute URI. Defaults to absolute URI.
* @return string|false Screenshot file. False if the theme does not have a screenshot.
*/
public function get_screenshot( $uri = 'uri' ) {
$screenshot = $this->cache_get( 'screenshot' );
if ( $screenshot ) {
if ( 'relative' === $uri ) {
return $screenshot;
}
return $this->get_stylesheet_directory_uri() . '/' . $screenshot;
} elseif ( 0 === $screenshot ) {
return false;
}
foreach ( array( 'png', 'gif', 'jpg', 'jpeg', 'webp', 'avif' ) as $ext ) {
if ( file_exists( $this->get_stylesheet_directory() . "/screenshot.$ext" ) ) {
$this->cache_add( 'screenshot', 'screenshot.' . $ext );
if ( 'relative' === $uri ) {
return 'screenshot.' . $ext;
}
return $this->get_stylesheet_directory_uri() . '/' . 'screenshot.' . $ext;
}
}
$this->cache_add( 'screenshot', 0 );
return false;
}
/**
* Returns files in the theme's directory.
*
* @since 3.4.0
*
* @param string[]|string $type Optional. Array of extensions to find, string of a single extension,
* or null for all extensions. Default null.
* @param int $depth Optional. How deep to search for files. Defaults to a flat scan (0 depth).
* -1 depth is infinite.
* @param bool $search_parent Optional. Whether to return parent files. Default false.
* @return string[] Array of files, keyed by the path to the file relative to the theme's directory, with the values
* being absolute paths.
*/
public function get_files( $type = null, $depth = 0, $search_parent = false ) {
$files = (array) self::scandir( $this->get_stylesheet_directory(), $type, $depth );
if ( $search_parent && $this->parent() ) {
$files += (array) self::scandir( $this->get_template_directory(), $type, $depth );
}
return array_filter( $files );
}
/**
* Returns the theme's post templates.
*
* @since 4.7.0
* @since 5.8.0 Include block templates.
*
* @return array[] Array of page template arrays, keyed by post type and filename,
* with the value of the translated header name.
*/
public function get_post_templates() {
// If you screw up your active theme and we invalidate your parent, most things still work. Let it slide.
if ( $this->errors() && $this->errors()->get_error_codes() !== array( 'theme_parent_invalid' ) ) {
return array();
}
$post_templates = $this->cache_get( 'post_templates' );
if ( ! is_array( $post_templates ) ) {
$post_templates = array();
$files = (array) $this->get_files( 'php', 1, true );
foreach ( $files as $file => $full_path ) {
if ( ! preg_match( '|Template Name:(.*)$|mi', file_get_contents( $full_path ), $header ) ) {
continue;
}
$types = array( 'page' );
if ( preg_match( '|Template Post Type:(.*)$|mi', file_get_contents( $full_path ), $type ) ) {
$types = explode( ',', _cleanup_header_comment( $type[1] ) );
}
foreach ( $types as $type ) {
$type = sanitize_key( $type );
if ( ! isset( $post_templates[ $type ] ) ) {
$post_templates[ $type ] = array();
}
$post_templates[ $type ][ $file ] = _cleanup_header_comment( $header[1] );
}
}
$this->cache_add( 'post_templates', $post_templates );
}
if ( current_theme_supports( 'block-templates' ) ) {
$block_templates = get_block_templates( array(), 'wp_template' );
foreach ( get_post_types( array( 'public' => true ) ) as $type ) {
foreach ( $block_templates as $block_template ) {
if ( ! $block_template->is_custom ) {
continue;
}
if ( isset( $block_template->post_types ) && ! in_array( $type, $block_template->post_types, true ) ) {
continue;
}
$post_templates[ $type ][ $block_template->slug ] = $block_template->title;
}
}
}
if ( $this->load_textdomain() ) {
foreach ( $post_templates as &$post_type ) {
foreach ( $post_type as &$post_template ) {
$post_template = $this->translate_header( 'Template Name', $post_template );
}
}
}
return $post_templates;
}
/**
* Returns the theme's post templates for a given post type.
*
* @since 3.4.0
* @since 4.7.0 Added the `$post_type` parameter.
*
* @param WP_Post|null $post Optional. The post being edited, provided for context.
* @param string $post_type Optional. Post type to get the templates for. Default 'page'.
* If a post is provided, its post type is used.
* @return string[] Array of template header names keyed by the template file name.
*/
public function get_page_templates( $post = null, $post_type = 'page' ) {
if ( $post ) {
$post_type = get_post_type( $post );
}
$post_templates = $this->get_post_templates();
$post_templates = isset( $post_templates[ $post_type ] ) ? $post_templates[ $post_type ] : array();
/**
* Filters list of page templates for a theme.
*
* @since 4.9.6
*
* @param string[] $post_templates Array of template header names keyed by the template file name.
* @param WP_Theme $theme The theme object.
* @param WP_Post|null $post The post being edited, provided for context, or null.
* @param string $post_type Post type to get the templates for.
*/
$post_templates = (array) apply_filters( 'theme_templates', $post_templates, $this, $post, $post_type );
/**
* Filters list of page templates for a theme.
*
* The dynamic portion of the hook name, `$post_type`, refers to the post type.
*
* Possible hook names include:
*
* - `theme_post_templates`
* - `theme_page_templates`
* - `theme_attachment_templates`
*
* @since 3.9.0
* @since 4.4.0 Converted to allow complete control over the `$page_templates` array.
* @since 4.7.0 Added the `$post_type` parameter.
*
* @param string[] $post_templates Array of template header names keyed by the template file name.
* @param WP_Theme $theme The theme object.
* @param WP_Post|null $post The post being edited, provided for context, or null.
* @param string $post_type Post type to get the templates for.
*/
$post_templates = (array) apply_filters( "theme_{$post_type}_templates", $post_templates, $this, $post, $post_type );
return $post_templates;
}
/**
* Scans a directory for files of a certain extension.
*
* @since 3.4.0
*
* @param string $path Absolute path to search.
* @param array|string|null $extensions Optional. Array of extensions to find, string of a single extension,
* or null for all extensions. Default null.
* @param int $depth Optional. How many levels deep to search for files. Accepts 0, 1+, or
* -1 (infinite depth). Default 0.
* @param string $relative_path Optional. The basename of the absolute path. Used to control the
* returned path for the found files, particularly when this function
* recurses to lower depths. Default empty.
* @return string[]|false Array of files, keyed by the path to the file relative to the `$path` directory prepended
* with `$relative_path`, with the values being absolute paths. False otherwise.
*/
private static function scandir( $path, $extensions = null, $depth = 0, $relative_path = '' ) {
if ( ! is_dir( $path ) ) {
return false;
}
if ( $extensions ) {
$extensions = (array) $extensions;
$_extensions = implode( '|', $extensions );
}
$relative_path = trailingslashit( $relative_path );
if ( '/' === $relative_path ) {
$relative_path = '';
}
$results = scandir( $path );
$files = array();
/**
* Filters the array of excluded directories and files while scanning theme folder.
*
* @since 4.7.4
*
* @param string[] $exclusions Array of excluded directories and files.
*/
$exclusions = (array) apply_filters( 'theme_scandir_exclusions', array( 'CVS', 'node_modules', 'vendor', 'bower_components' ) );
foreach ( $results as $result ) {
if ( '.' === $result[0] || in_array( $result, $exclusions, true ) ) {
continue;
}
if ( is_dir( $path . '/' . $result ) ) {
if ( ! $depth ) {
continue;
}
$found = self::scandir( $path . '/' . $result, $extensions, $depth - 1, $relative_path . $result );
$files = array_merge_recursive( $files, $found );
} elseif ( ! $extensions || preg_match( '~\.(' . $_extensions . ')$~', $result ) ) {
$files[ $relative_path . $result ] = $path . '/' . $result;
}
}
return $files;
}
/**
* Loads the theme's textdomain.
*
* Translation files are not inherited from the parent theme. TODO: If this fails for the
* child theme, it should probably try to load the parent theme's translations.
*
* @since 3.4.0
*
* @return bool True if the textdomain was successfully loaded or has already been loaded.
* False if no textdomain was specified in the file headers, or if the domain could not be loaded.
*/
public function load_textdomain() {
if ( isset( $this->textdomain_loaded ) ) {
return $this->textdomain_loaded;
}
$textdomain = $this->get( 'TextDomain' );
if ( ! $textdomain ) {
$this->textdomain_loaded = false;
return false;
}
if ( is_textdomain_loaded( $textdomain ) ) {
$this->textdomain_loaded = true;
return true;
}
$path = $this->get_stylesheet_directory();
$domainpath = $this->get( 'DomainPath' );
if ( $domainpath ) {
$path .= $domainpath;
} else {
$path .= '/languages';
}
$this->textdomain_loaded = load_theme_textdomain( $textdomain, $path );
return $this->textdomain_loaded;
}
/**
* Determines whether the theme is allowed (multisite only).
*
* @since 3.4.0
*
* @param string $check Optional. Whether to check only the 'network'-wide settings, the 'site'
* settings, or 'both'. Defaults to 'both'.
* @param int $blog_id Optional. Ignored if only network-wide settings are checked. Defaults to current site.
* @return bool Whether the theme is allowed for the network. Returns true in single-site.
*/
public function is_allowed( $check = 'both', $blog_id = null ) {
if ( ! is_multisite() ) {
return true;
}
if ( 'both' === $check || 'network' === $check ) {
$allowed = self::get_allowed_on_network();
if ( ! empty( $allowed[ $this->get_stylesheet() ] ) ) {
return true;
}
}
if ( 'both' === $check || 'site' === $check ) {
$allowed = self::get_allowed_on_site( $blog_id );
if ( ! empty( $allowed[ $this->get_stylesheet() ] ) ) {
return true;
}
}
return false;
}
/**
* Returns whether this theme is a block-based theme or not.
*
* @since 5.9.0
*
* @return bool
*/
public function is_block_theme() {
if ( isset( $this->block_theme ) ) {
return $this->block_theme;
}
$paths_to_index_block_template = array(
$this->get_file_path( '/templates/index.html' ),
$this->get_file_path( '/block-templates/index.html' ),
);
$this->block_theme = false;
foreach ( $paths_to_index_block_template as $path_to_index_block_template ) {
if ( is_file( $path_to_index_block_template ) && is_readable( $path_to_index_block_template ) ) {
$this->block_theme = true;
break;
}
}
return $this->block_theme;
}
/**
* Retrieves the path of a file in the theme.
*
* Searches in the stylesheet directory before the template directory so themes
* which inherit from a parent theme can just override one file.
*
* @since 5.9.0
*
* @param string $file Optional. File to search for in the stylesheet directory.
* @return string The path of the file.
*/
public function get_file_path( $file = '' ) {
$file = ltrim( $file, '/' );
$stylesheet_directory = $this->get_stylesheet_directory();
$template_directory = $this->get_template_directory();
if ( empty( $file ) ) {
$path = $stylesheet_directory;
} elseif ( $stylesheet_directory !== $template_directory && file_exists( $stylesheet_directory . '/' . $file ) ) {
$path = $stylesheet_directory . '/' . $file;
} else {
$path = $template_directory . '/' . $file;
}
/** This filter is documented in wp-includes/link-template.php */
return apply_filters( 'theme_file_path', $path, $file );
}
/**
* Determines the latest WordPress default theme that is installed.
*
* This hits the filesystem.
*
* @since 4.4.0
*
* @return WP_Theme|false Object, or false if no theme is installed, which would be bad.
*/
public static function get_core_default_theme() {
foreach ( array_reverse( self::$default_themes ) as $slug => $name ) {
$theme = wp_get_theme( $slug );
if ( $theme->exists() ) {
return $theme;
}
}
return false;
}
/**
* Returns array of stylesheet names of themes allowed on the site or network.
*
* @since 3.4.0
*
* @param int $blog_id Optional. ID of the site. Defaults to the current site.
* @return string[] Array of stylesheet names.
*/
public static function get_allowed( $blog_id = null ) {
/**
* Filters the array of themes allowed on the network.
*
* Site is provided as context so that a list of network allowed themes can
* be filtered further.
*
* @since 4.5.0
*
* @param string[] $allowed_themes An array of theme stylesheet names.
* @param int $blog_id ID of the site.
*/
$network = (array) apply_filters( 'network_allowed_themes', self::get_allowed_on_network(), $blog_id );
return $network + self::get_allowed_on_site( $blog_id );
}
/**
* Returns array of stylesheet names of themes allowed on the network.
*
* @since 3.4.0
*
* @return string[] Array of stylesheet names.
*/
public static function get_allowed_on_network() {
static $allowed_themes;
if ( ! isset( $allowed_themes ) ) {
$allowed_themes = (array) get_site_option( 'allowedthemes' );
}
/**
* Filters the array of themes allowed on the network.
*
* @since MU (3.0.0)
*
* @param string[] $allowed_themes An array of theme stylesheet names.
*/
$allowed_themes = apply_filters( 'allowed_themes', $allowed_themes );
return $allowed_themes;
}
/**
* Returns array of stylesheet names of themes allowed on the site.
*
* @since 3.4.0
*
* @param int $blog_id Optional. ID of the site. Defaults to the current site.
* @return string[] Array of stylesheet names.
*/
public static function get_allowed_on_site( $blog_id = null ) {
static $allowed_themes = array();
if ( ! $blog_id || ! is_multisite() ) {
$blog_id = get_current_blog_id();
}
if ( isset( $allowed_themes[ $blog_id ] ) ) {
/**
* Filters the array of themes allowed on the site.
*
* @since 4.5.0
*
* @param string[] $allowed_themes An array of theme stylesheet names.
* @param int $blog_id ID of the site. Defaults to current site.
*/
return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id );
}
$current = get_current_blog_id() === $blog_id;
if ( $current ) {
$allowed_themes[ $blog_id ] = get_option( 'allowedthemes' );
} else {
switch_to_blog( $blog_id );
$allowed_themes[ $blog_id ] = get_option( 'allowedthemes' );
restore_current_blog();
}
/*
* This is all super old MU back compat joy.
* 'allowedthemes' keys things by stylesheet. 'allowed_themes' keyed things by name.
*/
if ( false === $allowed_themes[ $blog_id ] ) {
if ( $current ) {
$allowed_themes[ $blog_id ] = get_option( 'allowed_themes' );
} else {
switch_to_blog( $blog_id );
$allowed_themes[ $blog_id ] = get_option( 'allowed_themes' );
restore_current_blog();
}
if ( ! is_array( $allowed_themes[ $blog_id ] ) || empty( $allowed_themes[ $blog_id ] ) ) {
$allowed_themes[ $blog_id ] = array();
} else {
$converted = array();
$themes = wp_get_themes();
foreach ( $themes as $stylesheet => $theme_data ) {
if ( isset( $allowed_themes[ $blog_id ][ $theme_data->get( 'Name' ) ] ) ) {
$converted[ $stylesheet ] = true;
}
}
$allowed_themes[ $blog_id ] = $converted;
}
// Set the option so we never have to go through this pain again.
if ( is_admin() && $allowed_themes[ $blog_id ] ) {
if ( $current ) {
update_option( 'allowedthemes', $allowed_themes[ $blog_id ], false );
delete_option( 'allowed_themes' );
} else {
switch_to_blog( $blog_id );
update_option( 'allowedthemes', $allowed_themes[ $blog_id ], false );
delete_option( 'allowed_themes' );
restore_current_blog();
}
}
}
/** This filter is documented in wp-includes/class-wp-theme.php */
return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id );
}
/**
* Returns the folder names of the block template directories.
*
* @since 6.4.0
*
* @return string[] {
* Folder names used by block themes.
*
* @type string $wp_template Theme-relative directory name for block templates.
* @type string $wp_template_part Theme-relative directory name for block template parts.
* }
*/
public function get_block_template_folders() {
// Return set/cached value if available.
if ( isset( $this->block_template_folders ) ) {
return $this->block_template_folders;
}
$this->block_template_folders = $this->default_template_folders;
$stylesheet_directory = $this->get_stylesheet_directory();
// If the theme uses deprecated block template folders.
if ( file_exists( $stylesheet_directory . '/block-templates' ) || file_exists( $stylesheet_directory . '/block-template-parts' ) ) {
$this->block_template_folders = array(
'wp_template' => 'block-templates',
'wp_template_part' => 'block-template-parts',
);
}
return $this->block_template_folders;
}
/**
* Gets block pattern data for a specified theme.
* Each pattern is defined as a PHP file and defines
* its metadata using plugin-style headers. The minimum required definition is:
*
* /**
* * Title: My Pattern
* * Slug: my-theme/my-pattern
* *
*
* The output of the PHP source corresponds to the content of the pattern, e.g.:
*
* Hello
*
* If applicable, this will collect from both parent and child theme.
*
* Other settable fields include:
*
* - Description
* - Viewport Width
* - Inserter (yes/no)
* - Categories (comma-separated values)
* - Keywords (comma-separated values)
* - Block Types (comma-separated values)
* - Post Types (comma-separated values)
* - Template Types (comma-separated values)
*
* @since 6.4.0
*
* @return array Block pattern data.
*/
public function get_block_patterns() {
$can_use_cached = ! wp_is_development_mode( 'theme' );
$pattern_data = $this->get_pattern_cache();
if ( is_array( $pattern_data ) ) {
if ( $can_use_cached ) {
return $pattern_data;
}
// If in development mode, clear pattern cache.
$this->delete_pattern_cache();
}
$dirpath = $this->get_stylesheet_directory() . '/patterns/';
$pattern_data = array();
if ( ! file_exists( $dirpath ) ) {
if ( $can_use_cached ) {
$this->set_pattern_cache( $pattern_data );
}
return $pattern_data;
}
$files = glob( $dirpath . '*.php' );
if ( ! $files ) {
if ( $can_use_cached ) {
$this->set_pattern_cache( $pattern_data );
}
return $pattern_data;
}
$default_headers = array(
'title' => 'Title',
'slug' => 'Slug',
'description' => 'Description',
'viewportWidth' => 'Viewport Width',
'inserter' => 'Inserter',
'categories' => 'Categories',
'keywords' => 'Keywords',
'blockTypes' => 'Block Types',
'postTypes' => 'Post Types',
'templateTypes' => 'Template Types',
);
$properties_to_parse = array(
'categories',
'keywords',
'blockTypes',
'postTypes',
'templateTypes',
);
foreach ( $files as $file ) {
$pattern = get_file_data( $file, $default_headers );
if ( empty( $pattern['slug'] ) ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: 1: file name. */
__( 'Could not register file "%s" as a block pattern ("Slug" field missing)' ),
$file
),
'6.0.0'
);
continue;
}
if ( ! preg_match( '/^[A-z0-9\/_-]+$/', $pattern['slug'] ) ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: 1: file name; 2: slug value found. */
__( 'Could not register file "%1$s" as a block pattern (invalid slug "%2$s")' ),
$file,
$pattern['slug']
),
'6.0.0'
);
}
// Title is a required property.
if ( ! $pattern['title'] ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: 1: file name. */
__( 'Could not register file "%s" as a block pattern ("Title" field missing)' ),
$file
),
'6.0.0'
);
continue;
}
// For properties of type array, parse data as comma-separated.
foreach ( $properties_to_parse as $property ) {
if ( ! empty( $pattern[ $property ] ) ) {
$pattern[ $property ] = array_filter( wp_parse_list( (string) $pattern[ $property ] ) );
} else {
unset( $pattern[ $property ] );
}
}
// Parse properties of type int.
$property = 'viewportWidth';
if ( ! empty( $pattern[ $property ] ) ) {
$pattern[ $property ] = (int) $pattern[ $property ];
} else {
unset( $pattern[ $property ] );
}
// Parse properties of type bool.
$property = 'inserter';
if ( ! empty( $pattern[ $property ] ) ) {
$pattern[ $property ] = in_array(
strtolower( $pattern[ $property ] ),
array( 'yes', 'true' ),
true
);
} else {
unset( $pattern[ $property ] );
}
$key = str_replace( $dirpath, '', $file );
$pattern_data[ $key ] = $pattern;
}
if ( $can_use_cached ) {
$this->set_pattern_cache( $pattern_data );
}
return $pattern_data;
}
/**
* Gets block pattern cache.
*
* @since 6.4.0
* @since 6.6.0 Uses transients to cache regardless of site environment.
*
* @return array|false Returns an array of patterns if cache is found, otherwise false.
*/
private function get_pattern_cache() {
if ( ! $this->exists() ) {
return false;
}
$pattern_data = get_site_transient( 'wp_theme_files_patterns-' . $this->cache_hash );
if ( is_array( $pattern_data ) && $pattern_data['version'] === $this->get( 'Version' ) ) {
return $pattern_data['patterns'];
}
return false;
}
/**
* Sets block pattern cache.
*
* @since 6.4.0
* @since 6.6.0 Uses transients to cache regardless of site environment.
*
* @param array $patterns Block patterns data to set in cache.
*/
private function set_pattern_cache( array $patterns ) {
$pattern_data = array(
'version' => $this->get( 'Version' ),
'patterns' => $patterns,
);
/**
* Filters the cache expiration time for theme files.
*
* @since 6.6.0
*
* @param int $cache_expiration Cache expiration time in seconds.
* @param string $cache_type Type of cache being set.
*/
$cache_expiration = (int) apply_filters( 'wp_theme_files_cache_ttl', self::$cache_expiration, 'theme_block_patterns' );
// We don't want to cache patterns infinitely.
if ( $cache_expiration <= 0 ) {
_doing_it_wrong(
__METHOD__,
sprintf(
/* translators: %1$s: The filter name.*/
__( 'The %1$s filter must return an integer value greater than 0.' ),
'wp_theme_files_cache_ttl'
),
'6.6.0'
);
$cache_expiration = self::$cache_expiration;
}
set_site_transient( 'wp_theme_files_patterns-' . $this->cache_hash, $pattern_data, $cache_expiration );
}
/**
* Clears block pattern cache.
*
* @since 6.4.0
* @since 6.6.0 Uses transients to cache regardless of site environment.
*/
public function delete_pattern_cache() {
delete_site_transient( 'wp_theme_files_patterns-' . $this->cache_hash );
}
/**
* Enables a theme for all sites on the current network.
*
* @since 4.6.0
*
* @param string|string[] $stylesheets Stylesheet name or array of stylesheet names.
*/
public static function network_enable_theme( $stylesheets ) {
if ( ! is_multisite() ) {
return;
}
if ( ! is_array( $stylesheets ) ) {
$stylesheets = array( $stylesheets );
}
$allowed_themes = get_site_option( 'allowedthemes' );
foreach ( $stylesheets as $stylesheet ) {
$allowed_themes[ $stylesheet ] = true;
}
update_site_option( 'allowedthemes', $allowed_themes );
}
/**
* Disables a theme for all sites on the current network.
*
* @since 4.6.0
*
* @param string|string[] $stylesheets Stylesheet name or array of stylesheet names.
*/
public static function network_disable_theme( $stylesheets ) {
if ( ! is_multisite() ) {
return;
}
if ( ! is_array( $stylesheets ) ) {
$stylesheets = array( $stylesheets );
}
$allowed_themes = get_site_option( 'allowedthemes' );
foreach ( $stylesheets as $stylesheet ) {
if ( isset( $allowed_themes[ $stylesheet ] ) ) {
unset( $allowed_themes[ $stylesheet ] );
}
}
update_site_option( 'allowedthemes', $allowed_themes );
}
/**
* Sorts themes by name.
*
* @since 3.4.0
*
* @param WP_Theme[] $themes Array of theme objects to sort (passed by reference).
*/
public static function sort_by_name( &$themes ) {
if ( str_starts_with( get_user_locale(), 'en_' ) ) {
uasort( $themes, array( 'WP_Theme', '_name_sort' ) );
} else {
foreach ( $themes as $key => $theme ) {
$theme->translate_header( 'Name', $theme->headers['Name'] );
}
uasort( $themes, array( 'WP_Theme', '_name_sort_i18n' ) );
}
}
/**
* Callback function for usort() to naturally sort themes by name.
*
* Accesses the Name header directly from the class for maximum speed.
* Would choke on HTML but we don't care enough to slow it down with strip_tags().
*
* @since 3.4.0
*
* @param WP_Theme $a First theme.
* @param WP_Theme $b Second theme.
* @return int Negative if `$a` falls lower in the natural order than `$b`. Zero if they fall equally.
* Greater than 0 if `$a` falls higher in the natural order than `$b`. Used with usort().
*/
private static function _name_sort( $a, $b ) {
return strnatcasecmp( $a->headers['Name'], $b->headers['Name'] );
}
/**
* Callback function for usort() to naturally sort themes by translated name.
*
* @since 3.4.0
*
* @param WP_Theme $a First theme.
* @param WP_Theme $b Second theme.
* @return int Negative if `$a` falls lower in the natural order than `$b`. Zero if they fall equally.
* Greater than 0 if `$a` falls higher in the natural order than `$b`. Used with usort().
*/
private static function _name_sort_i18n( $a, $b ) {
return strnatcasecmp( $a->name_translated, $b->name_translated );
}
private static function _check_headers_property_has_correct_type( $headers ) {
if ( ! is_array( $headers ) ) {
return false;
}
foreach ( $headers as $key => $value ) {
if ( ! is_string( $key ) || ! is_string( $value ) ) {
return false;
}
}
return true;
}
}