ru-se.com

theme.php (125388B)

---

 <?php
 /**
  * Theme, template, and stylesheet functions.
  *
  * @package WordPress
  * @subpackage Theme
  */
 
 /**
  * Returns an array of WP_Theme objects based on the arguments.
  *
  * Despite advances over get_themes(), this function is quite expensive, and grows
  * linearly with additional themes. Stick to wp_get_theme() if possible.
  *
  * @since 3.4.0
  *
  * @global array $wp_theme_directories
  *
  * @param array $args {
  *     Optional. The search arguments.
  *
  *     @type mixed $errors  True to return themes with errors, false to return
  *                          themes without errors, null to return all themes.
  *                          Default false.
  *     @type mixed $allowed (Multisite) True to return only allowed themes for a site.
  *                          False to return only disallowed themes for a site.
  *                          'site' to return only site-allowed themes.
  *                          'network' to return only network-allowed themes.
  *                          Null to return all themes. Default null.
  *     @type int   $blog_id (Multisite) The blog ID used to calculate which themes
  *                          are allowed. Default 0, synonymous for the current blog.
  * }
  * @return WP_Theme[] Array of WP_Theme objects.
  */
 function wp_get_themes( $args = array() ) {
 	global $wp_theme_directories;
 
 	$defaults = array(
 		'errors'  => false,
 		'allowed' => null,
 		'blog_id' => 0,
 	);
 	$args     = wp_parse_args( $args, $defaults );
 
 	$theme_directories = search_theme_directories();
 
 	if ( is_array( $wp_theme_directories ) && count( $wp_theme_directories ) > 1 ) {
 		// Make sure the current theme wins out, in case search_theme_directories() picks the wrong
 		// one in the case of a conflict. (Normally, last registered theme root wins.)
 		$current_theme = get_stylesheet();
 		if ( isset( $theme_directories[ $current_theme ] ) ) {
 			$root_of_current_theme = get_raw_theme_root( $current_theme );
 			if ( ! in_array( $root_of_current_theme, $wp_theme_directories, true ) ) {
 				$root_of_current_theme = WP_CONTENT_DIR . $root_of_current_theme;
 			}
 			$theme_directories[ $current_theme ]['theme_root'] = $root_of_current_theme;
 		}
 	}
 
 	if ( empty( $theme_directories ) ) {
 		return array();
 	}
 
 	if ( is_multisite() && null !== $args['allowed'] ) {
 		$allowed = $args['allowed'];
 		if ( 'network' === $allowed ) {
 			$theme_directories = array_intersect_key( $theme_directories, WP_Theme::get_allowed_on_network() );
 		} elseif ( 'site' === $allowed ) {
 			$theme_directories = array_intersect_key( $theme_directories, WP_Theme::get_allowed_on_site( $args['blog_id'] ) );
 		} elseif ( $allowed ) {
 			$theme_directories = array_intersect_key( $theme_directories, WP_Theme::get_allowed( $args['blog_id'] ) );
 		} else {
 			$theme_directories = array_diff_key( $theme_directories, WP_Theme::get_allowed( $args['blog_id'] ) );
 		}
 	}
 
 	$themes         = array();
 	static $_themes = array();
 
 	foreach ( $theme_directories as $theme => $theme_root ) {
 		if ( isset( $_themes[ $theme_root['theme_root'] . '/' . $theme ] ) ) {
 			$themes[ $theme ] = $_themes[ $theme_root['theme_root'] . '/' . $theme ];
 		} else {
 			$themes[ $theme ] = new WP_Theme( $theme, $theme_root['theme_root'] );
 
 			$_themes[ $theme_root['theme_root'] . '/' . $theme ] = $themes[ $theme ];
 		}
 	}
 
 	if ( null !== $args['errors'] ) {
 		foreach ( $themes as $theme => $wp_theme ) {
 			if ( $wp_theme->errors() != $args['errors'] ) {
 				unset( $themes[ $theme ] );
 			}
 		}
 	}
 
 	return $themes;
 }
 
 /**
  * Gets a WP_Theme object for a theme.
  *
  * @since 3.4.0
  *
  * @global array $wp_theme_directories
  *
  * @param string $stylesheet Optional. Directory name for the theme. Defaults to current theme.
  * @param string $theme_root Optional. Absolute path of the theme root to look in.
  *                           If not specified, get_raw_theme_root() is used to calculate
  *                           the theme root for the $stylesheet provided (or current theme).
  * @return WP_Theme Theme object. Be sure to check the object's exists() method
  *                  if you need to confirm the theme's existence.
  */
 function wp_get_theme( $stylesheet = '', $theme_root = '' ) {
 	global $wp_theme_directories;
 
 	if ( empty( $stylesheet ) ) {
 		$stylesheet = get_stylesheet();
 	}
 
 	if ( empty( $theme_root ) ) {
 		$theme_root = get_raw_theme_root( $stylesheet );
 		if ( false === $theme_root ) {
 			$theme_root = WP_CONTENT_DIR . '/themes';
 		} elseif ( ! in_array( $theme_root, (array) $wp_theme_directories, true ) ) {
 			$theme_root = WP_CONTENT_DIR . $theme_root;
 		}
 	}
 
 	return new WP_Theme( $stylesheet, $theme_root );
 }
 
 /**
  * Clears the cache held by get_theme_roots() and WP_Theme.
  *
  * @since 3.5.0
  * @param bool $clear_update_cache Whether to clear the theme updates cache.
  */
 function wp_clean_themes_cache( $clear_update_cache = true ) {
 	if ( $clear_update_cache ) {
 		delete_site_transient( 'update_themes' );
 	}
 	search_theme_directories( true );
 	foreach ( wp_get_themes( array( 'errors' => null ) ) as $theme ) {
 		$theme->cache_delete();
 	}
 }
 
 /**
  * Whether a child theme is in use.
  *
  * @since 3.0.0
  *
  * @return bool True if a child theme is in use, false otherwise.
  */
 function is_child_theme() {
 	return ( TEMPLATEPATH !== STYLESHEETPATH );
 }
 
 /**
  * Retrieves name of the current stylesheet.
  *
  * The theme name that is currently set as the front end theme.
  *
  * For all intents and purposes, the template name and the stylesheet name
  * are going to be the same for most cases.
  *
  * @since 1.5.0
  *
  * @return string Stylesheet name.
  */
 function get_stylesheet() {
 	/**
 	 * Filters the name of current stylesheet.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $stylesheet Name of the current stylesheet.
 	 */
 	return apply_filters( 'stylesheet', get_option( 'stylesheet' ) );
 }
 
 /**
  * Retrieves stylesheet directory path for current theme.
  *
  * @since 1.5.0
  *
  * @return string Path to current theme's stylesheet directory.
  */
 function get_stylesheet_directory() {
 	$stylesheet     = get_stylesheet();
 	$theme_root     = get_theme_root( $stylesheet );
 	$stylesheet_dir = "$theme_root/$stylesheet";
 
 	/**
 	 * Filters the stylesheet directory path for current theme.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $stylesheet_dir Absolute path to the current theme.
 	 * @param string $stylesheet     Directory name of the current theme.
 	 * @param string $theme_root     Absolute path to themes directory.
 	 */
 	return apply_filters( 'stylesheet_directory', $stylesheet_dir, $stylesheet, $theme_root );
 }
 
 /**
  * Retrieves stylesheet directory URI for current theme.
  *
  * @since 1.5.0
  *
  * @return string URI to current theme's stylesheet directory.
  */
 function get_stylesheet_directory_uri() {
 	$stylesheet         = str_replace( '%2F', '/', rawurlencode( get_stylesheet() ) );
 	$theme_root_uri     = get_theme_root_uri( $stylesheet );
 	$stylesheet_dir_uri = "$theme_root_uri/$stylesheet";
 
 	/**
 	 * Filters the stylesheet directory URI.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $stylesheet_dir_uri Stylesheet directory URI.
 	 * @param string $stylesheet         Name of the activated theme's directory.
 	 * @param string $theme_root_uri     Themes root URI.
 	 */
 	return apply_filters( 'stylesheet_directory_uri', $stylesheet_dir_uri, $stylesheet, $theme_root_uri );
 }
 
 /**
  * Retrieves stylesheet URI for current theme.
  *
  * The stylesheet file name is 'style.css' which is appended to the stylesheet directory URI path.
  * See get_stylesheet_directory_uri().
  *
  * @since 1.5.0
  *
  * @return string URI to current theme's stylesheet.
  */
 function get_stylesheet_uri() {
 	$stylesheet_dir_uri = get_stylesheet_directory_uri();
 	$stylesheet_uri     = $stylesheet_dir_uri . '/style.css';
 	/**
 	 * Filters the URI of the current theme stylesheet.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $stylesheet_uri     Stylesheet URI for the current theme/child theme.
 	 * @param string $stylesheet_dir_uri Stylesheet directory URI for the current theme/child theme.
 	 */
 	return apply_filters( 'stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri );
 }
 
 /**
  * Retrieves the localized stylesheet URI.
  *
  * The stylesheet directory for the localized stylesheet files are located, by
  * default, in the base theme directory. The name of the locale file will be the
  * locale followed by '.css'. If that does not exist, then the text direction
  * stylesheet will be checked for existence, for example 'ltr.css'.
  *
  * The theme may change the location of the stylesheet directory by either using
  * the {@see 'stylesheet_directory_uri'} or {@see 'locale_stylesheet_uri'} filters.
  *
  * If you want to change the location of the stylesheet files for the entire
  * WordPress workflow, then change the former. If you just have the locale in a
  * separate folder, then change the latter.
  *
  * @since 2.1.0
  *
  * @global WP_Locale $wp_locale WordPress date and time locale object.
  *
  * @return string URI to current theme's localized stylesheet.
  */
 function get_locale_stylesheet_uri() {
 	global $wp_locale;
 	$stylesheet_dir_uri = get_stylesheet_directory_uri();
 	$dir                = get_stylesheet_directory();
 	$locale             = get_locale();
 	if ( file_exists( "$dir/$locale.css" ) ) {
 		$stylesheet_uri = "$stylesheet_dir_uri/$locale.css";
 	} elseif ( ! empty( $wp_locale->text_direction ) && file_exists( "$dir/{$wp_locale->text_direction}.css" ) ) {
 		$stylesheet_uri = "$stylesheet_dir_uri/{$wp_locale->text_direction}.css";
 	} else {
 		$stylesheet_uri = '';
 	}
 	/**
 	 * Filters the localized stylesheet URI.
 	 *
 	 * @since 2.1.0
 	 *
 	 * @param string $stylesheet_uri     Localized stylesheet URI.
 	 * @param string $stylesheet_dir_uri Stylesheet directory URI.
 	 */
 	return apply_filters( 'locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri );
 }
 
 /**
  * Retrieves name of the current theme.
  *
  * @since 1.5.0
  *
  * @return string Template name.
  */
 function get_template() {
 	/**
 	 * Filters the name of the current theme.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $template Current theme's directory name.
 	 */
 	return apply_filters( 'template', get_option( 'template' ) );
 }
 
 /**
  * Retrieves template directory path for current theme.
  *
  * @since 1.5.0
  *
  * @return string Path to current theme's template directory.
  */
 function get_template_directory() {
 	$template     = get_template();
 	$theme_root   = get_theme_root( $template );
 	$template_dir = "$theme_root/$template";
 
 	/**
 	 * Filters the current theme directory path.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $template_dir The path of the current theme directory.
 	 * @param string $template     Directory name of the current theme.
 	 * @param string $theme_root   Absolute path to the themes directory.
 	 */
 	return apply_filters( 'template_directory', $template_dir, $template, $theme_root );
 }
 
 /**
  * Retrieves template directory URI for current theme.
  *
  * @since 1.5.0
  *
  * @return string URI to current theme's template directory.
  */
 function get_template_directory_uri() {
 	$template         = str_replace( '%2F', '/', rawurlencode( get_template() ) );
 	$theme_root_uri   = get_theme_root_uri( $template );
 	$template_dir_uri = "$theme_root_uri/$template";
 
 	/**
 	 * Filters the current theme directory URI.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $template_dir_uri The URI of the current theme directory.
 	 * @param string $template         Directory name of the current theme.
 	 * @param string $theme_root_uri   The themes root URI.
 	 */
 	return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri );
 }
 
 /**
  * Retrieves theme roots.
  *
  * @since 2.9.0
  *
  * @global array $wp_theme_directories
  *
  * @return array|string An array of theme roots keyed by template/stylesheet
  *                      or a single theme root if all themes have the same root.
  */
 function get_theme_roots() {
 	global $wp_theme_directories;
 
 	if ( ! is_array( $wp_theme_directories ) || count( $wp_theme_directories ) <= 1 ) {
 		return '/themes';
 	}
 
 	$theme_roots = get_site_transient( 'theme_roots' );
 	if ( false === $theme_roots ) {
 		search_theme_directories( true ); // Regenerate the transient.
 		$theme_roots = get_site_transient( 'theme_roots' );
 	}
 	return $theme_roots;
 }
 
 /**
  * Registers a directory that contains themes.
  *
  * @since 2.9.0
  *
  * @global array $wp_theme_directories
  *
  * @param string $directory Either the full filesystem path to a theme folder
  *                          or a folder within WP_CONTENT_DIR.
  * @return bool True if successfully registered a directory that contains themes,
  *              false if the directory does not exist.
  */
 function register_theme_directory( $directory ) {
 	global $wp_theme_directories;
 
 	if ( ! file_exists( $directory ) ) {
 		// Try prepending as the theme directory could be relative to the content directory.
 		$directory = WP_CONTENT_DIR . '/' . $directory;
 		// If this directory does not exist, return and do not register.
 		if ( ! file_exists( $directory ) ) {
 			return false;
 		}
 	}
 
 	if ( ! is_array( $wp_theme_directories ) ) {
 		$wp_theme_directories = array();
 	}
 
 	$untrailed = untrailingslashit( $directory );
 	if ( ! empty( $untrailed ) && ! in_array( $untrailed, $wp_theme_directories, true ) ) {
 		$wp_theme_directories[] = $untrailed;
 	}
 
 	return true;
 }
 
 /**
  * Searches all registered theme directories for complete and valid themes.
  *
  * @since 2.9.0
  *
  * @global array $wp_theme_directories
  *
  * @param bool $force Optional. Whether to force a new directory scan. Default false.
  * @return array|false Valid themes found on success, false on failure.
  */
 function search_theme_directories( $force = false ) {
 	global $wp_theme_directories;
 	static $found_themes = null;
 
 	if ( empty( $wp_theme_directories ) ) {
 		return false;
 	}
 
 	if ( ! $force && isset( $found_themes ) ) {
 		return $found_themes;
 	}
 
 	$found_themes = array();
 
 	$wp_theme_directories = (array) $wp_theme_directories;
 	$relative_theme_roots = array();
 
 	/*
 	 * Set up maybe-relative, maybe-absolute array of theme directories.
 	 * We always want to return absolute, but we need to cache relative
 	 * to use in get_theme_root().
 	 */
 	foreach ( $wp_theme_directories as $theme_root ) {
 		if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) ) {
 			$relative_theme_roots[ str_replace( WP_CONTENT_DIR, '', $theme_root ) ] = $theme_root;
 		} else {
 			$relative_theme_roots[ $theme_root ] = $theme_root;
 		}
 	}
 
 	/**
 	 * Filters whether to get the cache of the registered theme directories.
 	 *
 	 * @since 3.4.0
 	 *
 	 * @param bool   $cache_expiration Whether to get the cache of the theme directories. Default false.
 	 * @param string $context          The class or function name calling the filter.
 	 */
 	$cache_expiration = apply_filters( 'wp_cache_themes_persistently', false, 'search_theme_directories' );
 
 	if ( $cache_expiration ) {
 		$cached_roots = get_site_transient( 'theme_roots' );
 		if ( is_array( $cached_roots ) ) {
 			foreach ( $cached_roots as $theme_dir => $theme_root ) {
 				// A cached theme root is no longer around, so skip it.
 				if ( ! isset( $relative_theme_roots[ $theme_root ] ) ) {
 					continue;
 				}
 				$found_themes[ $theme_dir ] = array(
 					'theme_file' => $theme_dir . '/style.css',
 					'theme_root' => $relative_theme_roots[ $theme_root ], // Convert relative to absolute.
 				);
 			}
 			return $found_themes;
 		}
 		if ( ! is_int( $cache_expiration ) ) {
 			$cache_expiration = 30 * MINUTE_IN_SECONDS;
 		}
 	} else {
 		$cache_expiration = 30 * MINUTE_IN_SECONDS;
 	}
 
 	/* Loop the registered theme directories and extract all themes */
 	foreach ( $wp_theme_directories as $theme_root ) {
 
 		// Start with directories in the root of the current theme directory.
 		$dirs = @ scandir( $theme_root );
 		if ( ! $dirs ) {
 			trigger_error( "$theme_root is not readable", E_USER_NOTICE );
 			continue;
 		}
 		foreach ( $dirs as $dir ) {
 			if ( ! is_dir( $theme_root . '/' . $dir ) || '.' === $dir[0] || 'CVS' === $dir ) {
 				continue;
 			}
 			if ( file_exists( $theme_root . '/' . $dir . '/style.css' ) ) {
 				// wp-content/themes/a-single-theme
 				// wp-content/themes is $theme_root, a-single-theme is $dir.
 				$found_themes[ $dir ] = array(
 					'theme_file' => $dir . '/style.css',
 					'theme_root' => $theme_root,
 				);
 			} else {
 				$found_theme = false;
 				// wp-content/themes/a-folder-of-themes/*
 				// wp-content/themes is $theme_root, a-folder-of-themes is $dir, then themes are $sub_dirs.
 				$sub_dirs = @ scandir( $theme_root . '/' . $dir );
 				if ( ! $sub_dirs ) {
 					trigger_error( "$theme_root/$dir is not readable", E_USER_NOTICE );
 					continue;
 				}
 				foreach ( $sub_dirs as $sub_dir ) {
 					if ( ! is_dir( $theme_root . '/' . $dir . '/' . $sub_dir ) || '.' === $dir[0] || 'CVS' === $dir ) {
 						continue;
 					}
 					if ( ! file_exists( $theme_root . '/' . $dir . '/' . $sub_dir . '/style.css' ) ) {
 						continue;
 					}
 					$found_themes[ $dir . '/' . $sub_dir ] = array(
 						'theme_file' => $dir . '/' . $sub_dir . '/style.css',
 						'theme_root' => $theme_root,
 					);
 					$found_theme                           = true;
 				}
 				// Never mind the above, it's just a theme missing a style.css.
 				// Return it; WP_Theme will catch the error.
 				if ( ! $found_theme ) {
 					$found_themes[ $dir ] = array(
 						'theme_file' => $dir . '/style.css',
 						'theme_root' => $theme_root,
 					);
 				}
 			}
 		}
 	}
 
 	asort( $found_themes );
 
 	$theme_roots          = array();
 	$relative_theme_roots = array_flip( $relative_theme_roots );
 
 	foreach ( $found_themes as $theme_dir => $theme_data ) {
 		$theme_roots[ $theme_dir ] = $relative_theme_roots[ $theme_data['theme_root'] ]; // Convert absolute to relative.
 	}
 
 	if ( get_site_transient( 'theme_roots' ) != $theme_roots ) {
 		set_site_transient( 'theme_roots', $theme_roots, $cache_expiration );
 	}
 
 	return $found_themes;
 }
 
 /**
  * Retrieves path to themes directory.
  *
  * Does not have trailing slash.
  *
  * @since 1.5.0
  *
  * @global array $wp_theme_directories
  *
  * @param string $stylesheet_or_template Optional. The stylesheet or template name of the theme.
  *                                       Default is to leverage the main theme root.
  * @return string Themes directory path.
  */
 function get_theme_root( $stylesheet_or_template = '' ) {
 	global $wp_theme_directories;
 
 	$theme_root = '';
 
 	if ( $stylesheet_or_template ) {
 		$theme_root = get_raw_theme_root( $stylesheet_or_template );
 		if ( $theme_root ) {
 			// Always prepend WP_CONTENT_DIR unless the root currently registered as a theme directory.
 			// This gives relative theme roots the benefit of the doubt when things go haywire.
 			if ( ! in_array( $theme_root, (array) $wp_theme_directories, true ) ) {
 				$theme_root = WP_CONTENT_DIR . $theme_root;
 			}
 		}
 	}
 
 	if ( ! $theme_root ) {
 		$theme_root = WP_CONTENT_DIR . '/themes';
 	}
 
 	/**
 	 * Filters the absolute path to the themes directory.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $theme_root Absolute path to themes directory.
 	 */
 	return apply_filters( 'theme_root', $theme_root );
 }
 
 /**
  * Retrieves URI for themes directory.
  *
  * Does not have trailing slash.
  *
  * @since 1.5.0
  *
  * @global array $wp_theme_directories
  *
  * @param string $stylesheet_or_template Optional. The stylesheet or template name of the theme.
  *                                       Default is to leverage the main theme root.
  * @param string $theme_root             Optional. The theme root for which calculations will be based,
  *                                       preventing the need for a get_raw_theme_root() call. Default empty.
  * @return string Themes directory URI.
  */
 function get_theme_root_uri( $stylesheet_or_template = '', $theme_root = '' ) {
 	global $wp_theme_directories;
 
 	if ( $stylesheet_or_template && ! $theme_root ) {
 		$theme_root = get_raw_theme_root( $stylesheet_or_template );
 	}
 
 	if ( $stylesheet_or_template && $theme_root ) {
 		if ( in_array( $theme_root, (array) $wp_theme_directories, true ) ) {
 			// Absolute path. Make an educated guess. YMMV -- but note the filter below.
 			if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) ) {
 				$theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) );
 			} elseif ( 0 === strpos( $theme_root, ABSPATH ) ) {
 				$theme_root_uri = site_url( str_replace( ABSPATH, '', $theme_root ) );
 			} elseif ( 0 === strpos( $theme_root, WP_PLUGIN_DIR ) || 0 === strpos( $theme_root, WPMU_PLUGIN_DIR ) ) {
 				$theme_root_uri = plugins_url( basename( $theme_root ), $theme_root );
 			} else {
 				$theme_root_uri = $theme_root;
 			}
 		} else {
 			$theme_root_uri = content_url( $theme_root );
 		}
 	} else {
 		$theme_root_uri = content_url( 'themes' );
 	}
 
 	/**
 	 * Filters the URI for themes directory.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string $theme_root_uri         The URI for themes directory.
 	 * @param string $siteurl                WordPress web address which is set in General Options.
 	 * @param string $stylesheet_or_template The stylesheet or template name of the theme.
 	 */
 	return apply_filters( 'theme_root_uri', $theme_root_uri, get_option( 'siteurl' ), $stylesheet_or_template );
 }
 
 /**
  * Gets the raw theme root relative to the content directory with no filters applied.
  *
  * @since 3.1.0
  *
  * @global array $wp_theme_directories
  *
  * @param string $stylesheet_or_template The stylesheet or template name of the theme.
  * @param bool   $skip_cache             Optional. Whether to skip the cache.
  *                                       Defaults to false, meaning the cache is used.
  * @return string Theme root.
  */
 function get_raw_theme_root( $stylesheet_or_template, $skip_cache = false ) {
 	global $wp_theme_directories;
 
 	if ( ! is_array( $wp_theme_directories ) || count( $wp_theme_directories ) <= 1 ) {
 		return '/themes';
 	}
 
 	$theme_root = false;
 
 	// If requesting the root for the current theme, consult options to avoid calling get_theme_roots().
 	if ( ! $skip_cache ) {
 		if ( get_option( 'stylesheet' ) == $stylesheet_or_template ) {
 			$theme_root = get_option( 'stylesheet_root' );
 		} elseif ( get_option( 'template' ) == $stylesheet_or_template ) {
 			$theme_root = get_option( 'template_root' );
 		}
 	}
 
 	if ( empty( $theme_root ) ) {
 		$theme_roots = get_theme_roots();
 		if ( ! empty( $theme_roots[ $stylesheet_or_template ] ) ) {
 			$theme_root = $theme_roots[ $stylesheet_or_template ];
 		}
 	}
 
 	return $theme_root;
 }
 
 /**
  * Displays localized stylesheet link element.
  *
  * @since 2.1.0
  */
 function locale_stylesheet() {
 	$stylesheet = get_locale_stylesheet_uri();
 	if ( empty( $stylesheet ) ) {
 		return;
 	}
 
 	$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
 
 	printf(
 		'<link rel="stylesheet" href="%s"%s media="screen" />',
 		$stylesheet,
 		$type_attr
 	);
 }
 
 /**
  * Switches the theme.
  *
  * Accepts one argument: $stylesheet of the theme. It also accepts an additional function signature
  * of two arguments: $template then $stylesheet. This is for backward compatibility.
  *
  * @since 2.5.0
  *
  * @global array                $wp_theme_directories
  * @global WP_Customize_Manager $wp_customize
  * @global array                $sidebars_widgets
  *
  * @param string $stylesheet Stylesheet name.
  */
 function switch_theme( $stylesheet ) {
 	global $wp_theme_directories, $wp_customize, $sidebars_widgets;
 
 	$requirements = validate_theme_requirements( $stylesheet );
 	if ( is_wp_error( $requirements ) ) {
 		wp_die( $requirements );
 	}
 
 	$_sidebars_widgets = null;
 	if ( 'wp_ajax_customize_save' === current_action() ) {
 		$old_sidebars_widgets_data_setting = $wp_customize->get_setting( 'old_sidebars_widgets_data' );
 		if ( $old_sidebars_widgets_data_setting ) {
 			$_sidebars_widgets = $wp_customize->post_value( $old_sidebars_widgets_data_setting );
 		}
 	} elseif ( is_array( $sidebars_widgets ) ) {
 		$_sidebars_widgets = $sidebars_widgets;
 	}
 
 	if ( is_array( $_sidebars_widgets ) ) {
 		set_theme_mod(
 			'sidebars_widgets',
 			array(
 				'time' => time(),
 				'data' => $_sidebars_widgets,
 			)
 		);
 	}
 
 	$nav_menu_locations = get_theme_mod( 'nav_menu_locations' );
 	update_option( 'theme_switch_menu_locations', $nav_menu_locations );
 
 	if ( func_num_args() > 1 ) {
 		$stylesheet = func_get_arg( 1 );
 	}
 
 	$old_theme = wp_get_theme();
 	$new_theme = wp_get_theme( $stylesheet );
 	$template  = $new_theme->get_template();
 
 	if ( wp_is_recovery_mode() ) {
 		$paused_themes = wp_paused_themes();
 		$paused_themes->delete( $old_theme->get_stylesheet() );
 		$paused_themes->delete( $old_theme->get_template() );
 	}
 
 	update_option( 'template', $template );
 	update_option( 'stylesheet', $stylesheet );
 
 	if ( count( $wp_theme_directories ) > 1 ) {
 		update_option( 'template_root', get_raw_theme_root( $template, true ) );
 		update_option( 'stylesheet_root', get_raw_theme_root( $stylesheet, true ) );
 	} else {
 		delete_option( 'template_root' );
 		delete_option( 'stylesheet_root' );
 	}
 
 	$new_name = $new_theme->get( 'Name' );
 
 	update_option( 'current_theme', $new_name );
 
 	// Migrate from the old mods_{name} option to theme_mods_{slug}.
 	if ( is_admin() && false === get_option( 'theme_mods_' . $stylesheet ) ) {
 		$default_theme_mods = (array) get_option( 'mods_' . $new_name );
 		if ( ! empty( $nav_menu_locations ) && empty( $default_theme_mods['nav_menu_locations'] ) ) {
 			$default_theme_mods['nav_menu_locations'] = $nav_menu_locations;
 		}
 		add_option( "theme_mods_$stylesheet", $default_theme_mods );
 	} else {
 		/*
 		 * Since retrieve_widgets() is called when initializing a theme in the Customizer,
 		 * we need to remove the theme mods to avoid overwriting changes made via
 		 * the Customizer when accessing wp-admin/widgets.php.
 		 */
 		if ( 'wp_ajax_customize_save' === current_action() ) {
 			remove_theme_mod( 'sidebars_widgets' );
 		}
 	}
 
 	update_option( 'theme_switched', $old_theme->get_stylesheet() );
 
 	/**
 	 * Fires after the theme is switched.
 	 *
 	 * @since 1.5.0
 	 * @since 4.5.0 Introduced the `$old_theme` parameter.
 	 *
 	 * @param string   $new_name  Name of the new theme.
 	 * @param WP_Theme $new_theme WP_Theme instance of the new theme.
 	 * @param WP_Theme $old_theme WP_Theme instance of the old theme.
 	 */
 	do_action( 'switch_theme', $new_name, $new_theme, $old_theme );
 }
 
 /**
  * Checks that the current theme has 'index.php' and 'style.css' files.
  *
  * Does not initially check the default theme, which is the fallback and should always exist.
  * But if it doesn't exist, it'll fall back to the latest core default theme that does exist.
  * Will switch theme to the fallback theme if current theme does not validate.
  *
  * You can use the {@see 'validate_current_theme'} filter to return false to disable
  * this functionality.
  *
  * @since 1.5.0
  *
  * @see WP_DEFAULT_THEME
  *
  * @return bool
  */
 function validate_current_theme() {
 	/**
 	 * Filters whether to validate the current theme.
 	 *
 	 * @since 2.7.0
 	 *
 	 * @param bool $validate Whether to validate the current theme. Default true.
 	 */
 	if ( wp_installing() || ! apply_filters( 'validate_current_theme', true ) ) {
 		return true;
 	}
 
 	if ( ! file_exists( get_template_directory() . '/index.php' ) ) {
 		// Invalid.
 	} elseif ( ! file_exists( get_template_directory() . '/style.css' ) ) {
 		// Invalid.
 	} elseif ( is_child_theme() && ! file_exists( get_stylesheet_directory() . '/style.css' ) ) {
 		// Invalid.
 	} else {
 		// Valid.
 		return true;
 	}
 
 	$default = wp_get_theme( WP_DEFAULT_THEME );
 	if ( $default->exists() ) {
 		switch_theme( WP_DEFAULT_THEME );
 		return false;
 	}
 
 	/**
 	 * If we're in an invalid state but WP_DEFAULT_THEME doesn't exist,
 	 * switch to the latest core default theme that's installed.
 	 *
 	 * If it turns out that this latest core default theme is our current
 	 * theme, then there's nothing we can do about that, so we have to bail,
 	 * rather than going into an infinite loop. (This is why there are
 	 * checks against WP_DEFAULT_THEME above, also.) We also can't do anything
 	 * if it turns out there is no default theme installed. (That's `false`.)
 	 */
 	$default = WP_Theme::get_core_default_theme();
 	if ( false === $default || get_stylesheet() == $default->get_stylesheet() ) {
 		return true;
 	}
 
 	switch_theme( $default->get_stylesheet() );
 	return false;
 }
 
 /**
  * Validates the theme requirements for WordPress version and PHP version.
  *
  * Uses the information from `Requires at least` and `Requires PHP` headers
  * defined in the theme's `style.css` file.
  *
  * @since 5.5.0
  * @since 5.8.0 Removed support for using `readme.txt` as a fallback.
  *
  * @param string $stylesheet Directory name for the theme.
  * @return true|WP_Error True if requirements are met, WP_Error on failure.
  */
 function validate_theme_requirements( $stylesheet ) {
 	$theme = wp_get_theme( $stylesheet );
 
 	// If the theme is a Full Site Editing theme, check for the presence of the Gutenberg plugin.
 	$theme_tags = $theme->get( 'Tags' );
 
 	if ( ! empty( $theme_tags ) && in_array( 'full-site-editing', $theme_tags, true ) && ! function_exists( 'gutenberg_is_fse_theme' ) ) {
 		return new WP_Error(
 			'theme_requires_gutenberg_plugin',
 			sprintf(
 					/* translators: %s: Theme name. */
 				_x( '<strong>Error:</strong> This theme (%s) uses Full Site Editing, which requires the Gutenberg plugin to be activated.', 'theme' ),
 				$theme->display( 'Name' )
 			)
 		);
 	}
 
 	$requirements = array(
 		'requires'     => ! empty( $theme->get( 'RequiresWP' ) ) ? $theme->get( 'RequiresWP' ) : '',
 		'requires_php' => ! empty( $theme->get( 'RequiresPHP' ) ) ? $theme->get( 'RequiresPHP' ) : '',
 	);
 
 	$compatible_wp  = is_wp_version_compatible( $requirements['requires'] );
 	$compatible_php = is_php_version_compatible( $requirements['requires_php'] );
 
 	if ( ! $compatible_wp && ! $compatible_php ) {
 		return new WP_Error(
 			'theme_wp_php_incompatible',
 			sprintf(
 				/* translators: %s: Theme name. */
 				_x( '<strong>Error:</strong> Current WordPress and PHP versions do not meet minimum requirements for %s.', 'theme' ),
 				$theme->display( 'Name' )
 			)
 		);
 	} elseif ( ! $compatible_php ) {
 		return new WP_Error(
 			'theme_php_incompatible',
 			sprintf(
 				/* translators: %s: Theme name. */
 				_x( '<strong>Error:</strong> Current PHP version does not meet minimum requirements for %s.', 'theme' ),
 				$theme->display( 'Name' )
 			)
 		);
 	} elseif ( ! $compatible_wp ) {
 		return new WP_Error(
 			'theme_wp_incompatible',
 			sprintf(
 				/* translators: %s: Theme name. */
 				_x( '<strong>Error:</strong> Current WordPress version does not meet minimum requirements for %s.', 'theme' ),
 				$theme->display( 'Name' )
 			)
 		);
 	}
 
 	return true;
 }
 
 /**
  * Retrieves all theme modifications.
  *
  * @since 3.1.0
  *
  * @return array|void Theme modifications.
  */
 function get_theme_mods() {
 	$theme_slug = get_option( 'stylesheet' );
 	$mods       = get_option( "theme_mods_$theme_slug" );
 	if ( false === $mods ) {
 		$theme_name = get_option( 'current_theme' );
 		if ( false === $theme_name ) {
 			$theme_name = wp_get_theme()->get( 'Name' );
 		}
 		$mods = get_option( "mods_$theme_name" ); // Deprecated location.
 		if ( is_admin() && false !== $mods ) {
 			update_option( "theme_mods_$theme_slug", $mods );
 			delete_option( "mods_$theme_name" );
 		}
 	}
 	return $mods;
 }
 
 /**
  * Retrieves theme modification value for the current theme.
  *
  * If the modification name does not exist, then the $default will be passed
  * through {@link https://www.php.net/sprintf sprintf()} PHP function with
  * the template directory URI as the first string and the stylesheet directory URI
  * as the second string.
  *
  * @since 2.1.0
  *
  * @param string       $name    Theme modification name.
  * @param string|false $default Optional. Theme modification default value. Default false.
  * @return mixed Theme modification value.
  */
 function get_theme_mod( $name, $default = false ) {
 	$mods = get_theme_mods();
 
 	if ( isset( $mods[ $name ] ) ) {
 		/**
 		 * Filters the theme modification, or 'theme_mod', value.
 		 *
 		 * The dynamic portion of the hook name, `$name`, refers to the key name
 		 * of the modification array. For example, 'header_textcolor', 'header_image',
 		 * and so on depending on the theme options.
 		 *
 		 * @since 2.2.0
 		 *
 		 * @param string $current_mod The value of the current theme modification.
 		 */
 		return apply_filters( "theme_mod_{$name}", $mods[ $name ] );
 	}
 
 	if ( is_string( $default ) ) {
 		// Only run the replacement if an sprintf() string format pattern was found.
 		if ( preg_match( '#(?<!%)%(?:\d+\$?)?s#', $default ) ) {
 			// Remove a single trailing percent sign.
 			$default = preg_replace( '#(?<!%)%$#', '', $default );
 			$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
 		}
 	}
 
 	/** This filter is documented in wp-includes/theme.php */
 	return apply_filters( "theme_mod_{$name}", $default );
 }
 
 /**
  * Updates theme modification value for the current theme.
  *
  * @since 2.1.0
  * @since 5.6.0 A return value was added.
  *
  * @param string $name  Theme modification name.
  * @param mixed  $value Theme modification value.
  * @return bool True if the value was updated, false otherwise.
  */
 function set_theme_mod( $name, $value ) {
 	$mods      = get_theme_mods();
 	$old_value = isset( $mods[ $name ] ) ? $mods[ $name ] : false;
 
 	/**
 	 * Filters the theme modification, or 'theme_mod', value on save.
 	 *
 	 * The dynamic portion of the hook name, `$name`, refers to the key name
 	 * of the modification array. For example, 'header_textcolor', 'header_image',
 	 * and so on depending on the theme options.
 	 *
 	 * @since 3.9.0
 	 *
 	 * @param string $value     The new value of the theme modification.
 	 * @param string $old_value The current value of the theme modification.
 	 */
 	$mods[ $name ] = apply_filters( "pre_set_theme_mod_{$name}", $value, $old_value );
 
 	$theme = get_option( 'stylesheet' );
 
 	return update_option( "theme_mods_$theme", $mods );
 }
 
 /**
  * Removes theme modification name from current theme list.
  *
  * If removing the name also removes all elements, then the entire option
  * will be removed.
  *
  * @since 2.1.0
  *
  * @param string $name Theme modification name.
  */
 function remove_theme_mod( $name ) {
 	$mods = get_theme_mods();
 
 	if ( ! isset( $mods[ $name ] ) ) {
 		return;
 	}
 
 	unset( $mods[ $name ] );
 
 	if ( empty( $mods ) ) {
 		remove_theme_mods();
 		return;
 	}
 
 	$theme = get_option( 'stylesheet' );
 
 	update_option( "theme_mods_$theme", $mods );
 }
 
 /**
  * Removes theme modifications option for current theme.
  *
  * @since 2.1.0
  */
 function remove_theme_mods() {
 	delete_option( 'theme_mods_' . get_option( 'stylesheet' ) );
 
 	// Old style.
 	$theme_name = get_option( 'current_theme' );
 	if ( false === $theme_name ) {
 		$theme_name = wp_get_theme()->get( 'Name' );
 	}
 
 	delete_option( 'mods_' . $theme_name );
 }
 
 /**
  * Retrieves the custom header text color in 3- or 6-digit hexadecimal form.
  *
  * @since 2.1.0
  *
  * @return string Header text color in 3- or 6-digit hexadecimal form (minus the hash symbol).
  */
 function get_header_textcolor() {
 	return get_theme_mod( 'header_textcolor', get_theme_support( 'custom-header', 'default-text-color' ) );
 }
 
 /**
  * Displays the custom header text color in 3- or 6-digit hexadecimal form (minus the hash symbol).
  *
  * @since 2.1.0
  */
 function header_textcolor() {
 	echo get_header_textcolor();
 }
 
 /**
  * Whether to display the header text.
  *
  * @since 3.4.0
  *
  * @return bool
  */
 function display_header_text() {
 	if ( ! current_theme_supports( 'custom-header', 'header-text' ) ) {
 		return false;
 	}
 
 	$text_color = get_theme_mod( 'header_textcolor', get_theme_support( 'custom-header', 'default-text-color' ) );
 	return 'blank' !== $text_color;
 }
 
 /**
  * Checks whether a header image is set or not.
  *
  * @since 4.2.0
  *
  * @see get_header_image()
  *
  * @return bool Whether a header image is set or not.
  */
 function has_header_image() {
 	return (bool) get_header_image();
 }
 
 /**
  * Retrieves header image for custom header.
  *
  * @since 2.1.0
  *
  * @return string|false
  */
 function get_header_image() {
 	$url = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) );
 
 	if ( 'remove-header' === $url ) {
 		return false;
 	}
 
 	if ( is_random_header_image() ) {
 		$url = get_random_header_image();
 	}
 
 	return esc_url_raw( set_url_scheme( $url ) );
 }
 
 /**
  * Creates image tag markup for a custom header image.
  *
  * @since 4.4.0
  *
  * @param array $attr Optional. Additional attributes for the image tag. Can be used
  *                              to override the default attributes. Default empty.
  * @return string HTML image element markup or empty string on failure.
  */
 function get_header_image_tag( $attr = array() ) {
 	$header      = get_custom_header();
 	$header->url = get_header_image();
 
 	if ( ! $header->url ) {
 		return '';
 	}
 
 	$width  = absint( $header->width );
 	$height = absint( $header->height );
 
 	$attr = wp_parse_args(
 		$attr,
 		array(
 			'src'    => $header->url,
 			'width'  => $width,
 			'height' => $height,
 			'alt'    => get_bloginfo( 'name' ),
 		)
 	);
 
 	// Generate 'srcset' and 'sizes' if not already present.
 	if ( empty( $attr['srcset'] ) && ! empty( $header->attachment_id ) ) {
 		$image_meta = get_post_meta( $header->attachment_id, '_wp_attachment_metadata', true );
 		$size_array = array( $width, $height );
 
 		if ( is_array( $image_meta ) ) {
 			$srcset = wp_calculate_image_srcset( $size_array, $header->url, $image_meta, $header->attachment_id );
 			$sizes  = ! empty( $attr['sizes'] ) ? $attr['sizes'] : wp_calculate_image_sizes( $size_array, $header->url, $image_meta, $header->attachment_id );
 
 			if ( $srcset && $sizes ) {
 				$attr['srcset'] = $srcset;
 				$attr['sizes']  = $sizes;
 			}
 		}
 	}
 
 	$attr = array_map( 'esc_attr', $attr );
 	$html = '<img';
 
 	foreach ( $attr as $name => $value ) {
 		$html .= ' ' . $name . '="' . $value . '"';
 	}
 
 	$html .= ' />';
 
 	/**
 	 * Filters the markup of header images.
 	 *
 	 * @since 4.4.0
 	 *
 	 * @param string $html   The HTML image tag markup being filtered.
 	 * @param object $header The custom header object returned by 'get_custom_header()'.
 	 * @param array  $attr   Array of the attributes for the image tag.
 	 */
 	return apply_filters( 'get_header_image_tag', $html, $header, $attr );
 }
 
 /**
  * Displays the image markup for a custom header image.
  *
  * @since 4.4.0
  *
  * @param array $attr Optional. Attributes for the image markup. Default empty.
  */
 function the_header_image_tag( $attr = array() ) {
 	echo get_header_image_tag( $attr );
 }
 
 /**
  * Gets random header image data from registered images in theme.
  *
  * @since 3.4.0
  *
  * @access private
  *
  * @global array $_wp_default_headers
  *
  * @return object
  */
 function _get_random_header_data() {
 	static $_wp_random_header = null;
 
 	if ( empty( $_wp_random_header ) ) {
 		global $_wp_default_headers;
 		$header_image_mod = get_theme_mod( 'header_image', '' );
 		$headers          = array();
 
 		if ( 'random-uploaded-image' === $header_image_mod ) {
 			$headers = get_uploaded_header_images();
 		} elseif ( ! empty( $_wp_default_headers ) ) {
 			if ( 'random-default-image' === $header_image_mod ) {
 				$headers = $_wp_default_headers;
 			} else {
 				if ( current_theme_supports( 'custom-header', 'random-default' ) ) {
 					$headers = $_wp_default_headers;
 				}
 			}
 		}
 
 		if ( empty( $headers ) ) {
 			return new stdClass;
 		}
 
 		$_wp_random_header = (object) $headers[ array_rand( $headers ) ];
 
 		$_wp_random_header->url           = sprintf( $_wp_random_header->url, get_template_directory_uri(), get_stylesheet_directory_uri() );
 		$_wp_random_header->thumbnail_url = sprintf( $_wp_random_header->thumbnail_url, get_template_directory_uri(), get_stylesheet_directory_uri() );
 	}
 
 	return $_wp_random_header;
 }
 
 /**
  * Gets random header image URL from registered images in theme.
  *
  * @since 3.2.0
  *
  * @return string Path to header image.
  */
 function get_random_header_image() {
 	$random_image = _get_random_header_data();
 
 	if ( empty( $random_image->url ) ) {
 		return '';
 	}
 
 	return $random_image->url;
 }
 
 /**
  * Checks if random header image is in use.
  *
  * Always true if user expressly chooses the option in Appearance > Header.
  * Also true if theme has multiple header images registered, no specific header image
  * is chosen, and theme turns on random headers with add_theme_support().
  *
  * @since 3.2.0
  *
  * @param string $type The random pool to use. Possible values include 'any',
  *                     'default', 'uploaded'. Default 'any'.
  * @return bool
  */
 function is_random_header_image( $type = 'any' ) {
 	$header_image_mod = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) );
 
 	if ( 'any' === $type ) {
 		if ( 'random-default-image' === $header_image_mod
 			|| 'random-uploaded-image' === $header_image_mod
 			|| ( '' !== get_random_header_image() && empty( $header_image_mod ) )
 		) {
 			return true;
 		}
 	} else {
 		if ( "random-$type-image" === $header_image_mod ) {
 			return true;
 		} elseif ( 'default' === $type && empty( $header_image_mod ) && '' !== get_random_header_image() ) {
 			return true;
 		}
 	}
 
 	return false;
 }
 
 /**
  * Displays header image URL.
  *
  * @since 2.1.0
  */
 function header_image() {
 	$image = get_header_image();
 
 	if ( $image ) {
 		echo esc_url( $image );
 	}
 }
 
 /**
  * Gets the header images uploaded for the current theme.
  *
  * @since 3.2.0
  *
  * @return array
  */
 function get_uploaded_header_images() {
 	$header_images = array();
 
 	// @todo Caching.
 	$headers = get_posts(
 		array(
 			'post_type'  => 'attachment',
 			'meta_key'   => '_wp_attachment_is_custom_header',
 			'meta_value' => get_option( 'stylesheet' ),
 			'orderby'    => 'none',
 			'nopaging'   => true,
 		)
 	);
 
 	if ( empty( $headers ) ) {
 		return array();
 	}
 
 	foreach ( (array) $headers as $header ) {
 		$url          = esc_url_raw( wp_get_attachment_url( $header->ID ) );
 		$header_data  = wp_get_attachment_metadata( $header->ID );
 		$header_index = $header->ID;
 
 		$header_images[ $header_index ]                      = array();
 		$header_images[ $header_index ]['attachment_id']     = $header->ID;
 		$header_images[ $header_index ]['url']               = $url;
 		$header_images[ $header_index ]['thumbnail_url']     = $url;
 		$header_images[ $header_index ]['alt_text']          = get_post_meta( $header->ID, '_wp_attachment_image_alt', true );
 		$header_images[ $header_index ]['attachment_parent'] = isset( $header_data['attachment_parent'] ) ? $header_data['attachment_parent'] : '';
 
 		if ( isset( $header_data['width'] ) ) {
 			$header_images[ $header_index ]['width'] = $header_data['width'];
 		}
 		if ( isset( $header_data['height'] ) ) {
 			$header_images[ $header_index ]['height'] = $header_data['height'];
 		}
 	}
 
 	return $header_images;
 }
 
 /**
  * Gets the header image data.
  *
  * @since 3.4.0
  *
  * @global array $_wp_default_headers
  *
  * @return object
  */
 function get_custom_header() {
 	global $_wp_default_headers;
 
 	if ( is_random_header_image() ) {
 		$data = _get_random_header_data();
 	} else {
 		$data = get_theme_mod( 'header_image_data' );
 		if ( ! $data && current_theme_supports( 'custom-header', 'default-image' ) ) {
 			$directory_args        = array( get_template_directory_uri(), get_stylesheet_directory_uri() );
 			$data                  = array();
 			$data['url']           = vsprintf( get_theme_support( 'custom-header', 'default-image' ), $directory_args );
 			$data['thumbnail_url'] = $data['url'];
 			if ( ! empty( $_wp_default_headers ) ) {
 				foreach ( (array) $_wp_default_headers as $default_header ) {
 					$url = vsprintf( $default_header['url'], $directory_args );
 					if ( $data['url'] == $url ) {
 						$data                  = $default_header;
 						$data['url']           = $url;
 						$data['thumbnail_url'] = vsprintf( $data['thumbnail_url'], $directory_args );
 						break;
 					}
 				}
 			}
 		}
 	}
 
 	$default = array(
 		'url'           => '',
 		'thumbnail_url' => '',
 		'width'         => get_theme_support( 'custom-header', 'width' ),
 		'height'        => get_theme_support( 'custom-header', 'height' ),
 		'video'         => get_theme_support( 'custom-header', 'video' ),
 	);
 	return (object) wp_parse_args( $data, $default );
 }
 
 /**
  * Registers a selection of default headers to be displayed by the custom header admin UI.
  *
  * @since 3.0.0
  *
  * @global array $_wp_default_headers
  *
  * @param array $headers Array of headers keyed by a string ID. The IDs point to arrays
  *                       containing 'url', 'thumbnail_url', and 'description' keys.
  */
 function register_default_headers( $headers ) {
 	global $_wp_default_headers;
 
 	$_wp_default_headers = array_merge( (array) $_wp_default_headers, (array) $headers );
 }
 
 /**
  * Unregisters default headers.
  *
  * This function must be called after register_default_headers() has already added the
  * header you want to remove.
  *
  * @see register_default_headers()
  * @since 3.0.0
  *
  * @global array $_wp_default_headers
  *
  * @param string|array $header The header string id (key of array) to remove, or an array thereof.
  * @return bool|void A single header returns true on success, false on failure.
  *                   There is currently no return value for multiple headers.
  */
 function unregister_default_headers( $header ) {
 	global $_wp_default_headers;
 	if ( is_array( $header ) ) {
 		array_map( 'unregister_default_headers', $header );
 	} elseif ( isset( $_wp_default_headers[ $header ] ) ) {
 		unset( $_wp_default_headers[ $header ] );
 		return true;
 	} else {
 		return false;
 	}
 }
 
 /**
  * Checks whether a header video is set or not.
  *
  * @since 4.7.0
  *
  * @see get_header_video_url()
  *
  * @return bool Whether a header video is set or not.
  */
 function has_header_video() {
 	return (bool) get_header_video_url();
 }
 
 /**
  * Retrieves header video URL for custom header.
  *
  * Uses a local video if present, or falls back to an external video.
  *
  * @since 4.7.0
  *
  * @return string|false Header video URL or false if there is no video.
  */
 function get_header_video_url() {
 	$id = absint( get_theme_mod( 'header_video' ) );
 
 	if ( $id ) {
 		// Get the file URL from the attachment ID.
 		$url = wp_get_attachment_url( $id );
 	} else {
 		$url = get_theme_mod( 'external_header_video' );
 	}
 
 	/**
 	 * Filters the header video URL.
 	 *
 	 * @since 4.7.3
 	 *
 	 * @param string $url Header video URL, if available.
 	 */
 	$url = apply_filters( 'get_header_video_url', $url );
 
 	if ( ! $id && ! $url ) {
 		return false;
 	}
 
 	return esc_url_raw( set_url_scheme( $url ) );
 }
 
 /**
  * Displays header video URL.
  *
  * @since 4.7.0
  */
 function the_header_video_url() {
 	$video = get_header_video_url();
 
 	if ( $video ) {
 		echo esc_url( $video );
 	}
 }
 
 /**
  * Retrieves header video settings.
  *
  * @since 4.7.0
  *
  * @return array
  */
 function get_header_video_settings() {
 	$header     = get_custom_header();
 	$video_url  = get_header_video_url();
 	$video_type = wp_check_filetype( $video_url, wp_get_mime_types() );
 
 	$settings = array(
 		'mimeType'  => '',
 		'posterUrl' => get_header_image(),
 		'videoUrl'  => $video_url,
 		'width'     => absint( $header->width ),
 		'height'    => absint( $header->height ),
 		'minWidth'  => 900,
 		'minHeight' => 500,
 		'l10n'      => array(
 			'pause'      => __( 'Pause' ),
 			'play'       => __( 'Play' ),
 			'pauseSpeak' => __( 'Video is paused.' ),
 			'playSpeak'  => __( 'Video is playing.' ),
 		),
 	);
 
 	if ( preg_match( '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#', $video_url ) ) {
 		$settings['mimeType'] = 'video/x-youtube';
 	} elseif ( ! empty( $video_type['type'] ) ) {
 		$settings['mimeType'] = $video_type['type'];
 	}
 
 	/**
 	 * Filters header video settings.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param array $settings An array of header video settings.
 	 */
 	return apply_filters( 'header_video_settings', $settings );
 }
 
 /**
  * Checks whether a custom header is set or not.
  *
  * @since 4.7.0
  *
  * @return bool True if a custom header is set. False if not.
  */
 function has_custom_header() {
 	if ( has_header_image() || ( has_header_video() && is_header_video_active() ) ) {
 		return true;
 	}
 
 	return false;
 }
 
 /**
  * Checks whether the custom header video is eligible to show on the current page.
  *
  * @since 4.7.0
  *
  * @return bool True if the custom header video should be shown. False if not.
  */
 function is_header_video_active() {
 	if ( ! get_theme_support( 'custom-header', 'video' ) ) {
 		return false;
 	}
 
 	$video_active_cb = get_theme_support( 'custom-header', 'video-active-callback' );
 
 	if ( empty( $video_active_cb ) || ! is_callable( $video_active_cb ) ) {
 		$show_video = true;
 	} else {
 		$show_video = call_user_func( $video_active_cb );
 	}
 
 	/**
 	 * Filters whether the custom header video is eligible to show on the current page.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param bool $show_video Whether the custom header video should be shown. Returns the value
 	 *                         of the theme setting for the `custom-header`'s `video-active-callback`.
 	 *                         If no callback is set, the default value is that of `is_front_page()`.
 	 */
 	return apply_filters( 'is_header_video_active', $show_video );
 }
 
 /**
  * Retrieves the markup for a custom header.
  *
  * The container div will always be returned in the Customizer preview.
  *
  * @since 4.7.0
  *
  * @return string The markup for a custom header on success.
  */
 function get_custom_header_markup() {
 	if ( ! has_custom_header() && ! is_customize_preview() ) {
 		return '';
 	}
 
 	return sprintf(
 		'<div id="wp-custom-header" class="wp-custom-header">%s</div>',
 		get_header_image_tag()
 	);
 }
 
 /**
  * Prints the markup for a custom header.
  *
  * A container div will always be printed in the Customizer preview.
  *
  * @since 4.7.0
  */
 function the_custom_header_markup() {
 	$custom_header = get_custom_header_markup();
 	if ( empty( $custom_header ) ) {
 		return;
 	}
 
 	echo $custom_header;
 
 	if ( is_header_video_active() && ( has_header_video() || is_customize_preview() ) ) {
 		wp_enqueue_script( 'wp-custom-header' );
 		wp_localize_script( 'wp-custom-header', '_wpCustomHeaderSettings', get_header_video_settings() );
 	}
 }
 
 /**
  * Retrieves background image for custom background.
  *
  * @since 3.0.0
  *
  * @return string
  */
 function get_background_image() {
 	return get_theme_mod( 'background_image', get_theme_support( 'custom-background', 'default-image' ) );
 }
 
 /**
  * Displays background image path.
  *
  * @since 3.0.0
  */
 function background_image() {
 	echo get_background_image();
 }
 
 /**
  * Retrieves value for custom background color.
  *
  * @since 3.0.0
  *
  * @return string
  */
 function get_background_color() {
 	return get_theme_mod( 'background_color', get_theme_support( 'custom-background', 'default-color' ) );
 }
 
 /**
  * Displays background color value.
  *
  * @since 3.0.0
  */
 function background_color() {
 	echo get_background_color();
 }
 
 /**
  * Default custom background callback.
  *
  * @since 3.0.0
  */
 function _custom_background_cb() {
 	// $background is the saved custom image, or the default image.
 	$background = set_url_scheme( get_background_image() );
 
 	// $color is the saved custom color.
 	// A default has to be specified in style.css. It will not be printed here.
 	$color = get_background_color();
 
 	if ( get_theme_support( 'custom-background', 'default-color' ) === $color ) {
 		$color = false;
 	}
 
 	$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
 
 	if ( ! $background && ! $color ) {
 		if ( is_customize_preview() ) {
 			printf( '<style%s id="custom-background-css"></style>', $type_attr );
 		}
 		return;
 	}
 
 	$style = $color ? "background-color: #$color;" : '';
 
 	if ( $background ) {
 		$image = ' background-image: url("' . esc_url_raw( $background ) . '");';
 
 		// Background Position.
 		$position_x = get_theme_mod( 'background_position_x', get_theme_support( 'custom-background', 'default-position-x' ) );
 		$position_y = get_theme_mod( 'background_position_y', get_theme_support( 'custom-background', 'default-position-y' ) );
 
 		if ( ! in_array( $position_x, array( 'left', 'center', 'right' ), true ) ) {
 			$position_x = 'left';
 		}
 
 		if ( ! in_array( $position_y, array( 'top', 'center', 'bottom' ), true ) ) {
 			$position_y = 'top';
 		}
 
 		$position = " background-position: $position_x $position_y;";
 
 		// Background Size.
 		$size = get_theme_mod( 'background_size', get_theme_support( 'custom-background', 'default-size' ) );
 
 		if ( ! in_array( $size, array( 'auto', 'contain', 'cover' ), true ) ) {
 			$size = 'auto';
 		}
 
 		$size = " background-size: $size;";
 
 		// Background Repeat.
 		$repeat = get_theme_mod( 'background_repeat', get_theme_support( 'custom-background', 'default-repeat' ) );
 
 		if ( ! in_array( $repeat, array( 'repeat-x', 'repeat-y', 'repeat', 'no-repeat' ), true ) ) {
 			$repeat = 'repeat';
 		}
 
 		$repeat = " background-repeat: $repeat;";
 
 		// Background Scroll.
 		$attachment = get_theme_mod( 'background_attachment', get_theme_support( 'custom-background', 'default-attachment' ) );
 
 		if ( 'fixed' !== $attachment ) {
 			$attachment = 'scroll';
 		}
 
 		$attachment = " background-attachment: $attachment;";
 
 		$style .= $image . $position . $size . $repeat . $attachment;
 	}
 	?>
 <style<?php echo $type_attr; ?> id="custom-background-css">
 body.custom-background { <?php echo trim( $style ); ?> }
 </style>
 	<?php
 }
 
 /**
  * Renders the Custom CSS style element.
  *
  * @since 4.7.0
  */
 function wp_custom_css_cb() {
 	$styles = wp_get_custom_css();
 	if ( $styles || is_customize_preview() ) :
 		$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
 		?>
 		<style<?php echo $type_attr; ?> id="wp-custom-css">
 			<?php echo strip_tags( $styles ); // Note that esc_html() cannot be used because `div &gt; span` is not interpreted properly. ?>
 		</style>
 		<?php
 	endif;
 }
 
 /**
  * Fetches the `custom_css` post for a given theme.
  *
  * @since 4.7.0
  *
  * @param string $stylesheet Optional. A theme object stylesheet name. Defaults to the current theme.
  * @return WP_Post|null The custom_css post or null if none exists.
  */
 function wp_get_custom_css_post( $stylesheet = '' ) {
 	if ( empty( $stylesheet ) ) {
 		$stylesheet = get_stylesheet();
 	}
 
 	$custom_css_query_vars = array(
 		'post_type'              => 'custom_css',
 		'post_status'            => get_post_stati(),
 		'name'                   => sanitize_title( $stylesheet ),
 		'posts_per_page'         => 1,
 		'no_found_rows'          => true,
 		'cache_results'          => true,
 		'update_post_meta_cache' => false,
 		'update_post_term_cache' => false,
 		'lazy_load_term_meta'    => false,
 	);
 
 	$post = null;
 	if ( get_stylesheet() === $stylesheet ) {
 		$post_id = get_theme_mod( 'custom_css_post_id' );
 
 		if ( $post_id > 0 && get_post( $post_id ) ) {
 			$post = get_post( $post_id );
 		}
 
 		// `-1` indicates no post exists; no query necessary.
 		if ( ! $post && -1 !== $post_id ) {
 			$query = new WP_Query( $custom_css_query_vars );
 			$post  = $query->post;
 			/*
 			 * Cache the lookup. See wp_update_custom_css_post().
 			 * @todo This should get cleared if a custom_css post is added/removed.
 			 */
 			set_theme_mod( 'custom_css_post_id', $post ? $post->ID : -1 );
 		}
 	} else {
 		$query = new WP_Query( $custom_css_query_vars );
 		$post  = $query->post;
 	}
 
 	return $post;
 }
 
 /**
  * Fetches the saved Custom CSS content for rendering.
  *
  * @since 4.7.0
  *
  * @param string $stylesheet Optional. A theme object stylesheet name. Defaults to the current theme.
  * @return string The Custom CSS Post content.
  */
 function wp_get_custom_css( $stylesheet = '' ) {
 	$css = '';
 
 	if ( empty( $stylesheet ) ) {
 		$stylesheet = get_stylesheet();
 	}
 
 	$post = wp_get_custom_css_post( $stylesheet );
 	if ( $post ) {
 		$css = $post->post_content;
 	}
 
 	/**
 	 * Filters the Custom CSS Output into the <head>.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param string $css        CSS pulled in from the Custom CSS CPT.
 	 * @param string $stylesheet The theme stylesheet name.
 	 */
 	$css = apply_filters( 'wp_get_custom_css', $css, $stylesheet );
 
 	return $css;
 }
 
 /**
  * Updates the `custom_css` post for a given theme.
  *
  * Inserts a `custom_css` post when one doesn't yet exist.
  *
  * @since 4.7.0
  *
  * @param string $css CSS, stored in `post_content`.
  * @param array  $args {
  *     Args.
  *
  *     @type string $preprocessed Pre-processed CSS, stored in `post_content_filtered`. Normally empty string. Optional.
  *     @type string $stylesheet   Stylesheet (child theme) to update. Optional, defaults to current theme/stylesheet.
  * }
  * @return WP_Post|WP_Error Post on success, error on failure.
  */
 function wp_update_custom_css_post( $css, $args = array() ) {
 	$args = wp_parse_args(
 		$args,
 		array(
 			'preprocessed' => '',
 			'stylesheet'   => get_stylesheet(),
 		)
 	);
 
 	$data = array(
 		'css'          => $css,
 		'preprocessed' => $args['preprocessed'],
 	);
 
 	/**
 	 * Filters the `css` (`post_content`) and `preprocessed` (`post_content_filtered`) args for a `custom_css` post being updated.
 	 *
 	 * This filter can be used by plugin that offer CSS pre-processors, to store the original
 	 * pre-processed CSS in `post_content_filtered` and then store processed CSS in `post_content`.
 	 * When used in this way, the `post_content_filtered` should be supplied as the setting value
 	 * instead of `post_content` via a the `customize_value_custom_css` filter, for example:
 	 *
 	 * <code>
 	 * add_filter( 'customize_value_custom_css', function( $value, $setting ) {
 	 *     $post = wp_get_custom_css_post( $setting->stylesheet );
 	 *     if ( $post && ! empty( $post->post_content_filtered ) ) {
 	 *         $css = $post->post_content_filtered;
 	 *     }
 	 *     return $css;
 	 * }, 10, 2 );
 	 * </code>
 	 *
 	 * @since 4.7.0
 	 * @param array $data {
 	 *     Custom CSS data.
 	 *
 	 *     @type string $css          CSS stored in `post_content`.
 	 *     @type string $preprocessed Pre-processed CSS stored in `post_content_filtered`. Normally empty string.
 	 * }
 	 * @param array $args {
 	 *     The args passed into `wp_update_custom_css_post()` merged with defaults.
 	 *
 	 *     @type string $css          The original CSS passed in to be updated.
 	 *     @type string $preprocessed The original preprocessed CSS passed in to be updated.
 	 *     @type string $stylesheet   The stylesheet (theme) being updated.
 	 * }
 	 */
 	$data = apply_filters( 'update_custom_css_data', $data, array_merge( $args, compact( 'css' ) ) );
 
 	$post_data = array(
 		'post_title'            => $args['stylesheet'],
 		'post_name'             => sanitize_title( $args['stylesheet'] ),
 		'post_type'             => 'custom_css',
 		'post_status'           => 'publish',
 		'post_content'          => $data['css'],
 		'post_content_filtered' => $data['preprocessed'],
 	);
 
 	// Update post if it already exists, otherwise create a new one.
 	$post = wp_get_custom_css_post( $args['stylesheet'] );
 	if ( $post ) {
 		$post_data['ID'] = $post->ID;
 		$r               = wp_update_post( wp_slash( $post_data ), true );
 	} else {
 		$r = wp_insert_post( wp_slash( $post_data ), true );
 
 		if ( ! is_wp_error( $r ) ) {
 			if ( get_stylesheet() === $args['stylesheet'] ) {
 				set_theme_mod( 'custom_css_post_id', $r );
 			}
 
 			// Trigger creation of a revision. This should be removed once #30854 is resolved.
 			if ( 0 === count( wp_get_post_revisions( $r ) ) ) {
 				wp_save_post_revision( $r );
 			}
 		}
 	}
 
 	if ( is_wp_error( $r ) ) {
 		return $r;
 	}
 	return get_post( $r );
 }
 
 /**
  * Adds callback for custom TinyMCE editor stylesheets.
  *
  * The parameter $stylesheet is the name of the stylesheet, relative to
  * the theme root. It also accepts an array of stylesheets.
  * It is optional and defaults to 'editor-style.css'.
  *
  * This function automatically adds another stylesheet with -rtl prefix, e.g. editor-style-rtl.css.
  * If that file doesn't exist, it is removed before adding the stylesheet(s) to TinyMCE.
  * If an array of stylesheets is passed to add_editor_style(),
  * RTL is only added for the first stylesheet.
  *
  * Since version 3.4 the TinyMCE body has .rtl CSS class.
  * It is a better option to use that class and add any RTL styles to the main stylesheet.
  *
  * @since 3.0.0
  *
  * @global array $editor_styles
  *
  * @param array|string $stylesheet Optional. Stylesheet name or array thereof, relative to theme root.
  *                                 Defaults to 'editor-style.css'
  */
 function add_editor_style( $stylesheet = 'editor-style.css' ) {
 	global $editor_styles;
 
 	add_theme_support( 'editor-style' );
 
 	$editor_styles = (array) $editor_styles;
 	$stylesheet    = (array) $stylesheet;
 
 	if ( is_rtl() ) {
 		$rtl_stylesheet = str_replace( '.css', '-rtl.css', $stylesheet[0] );
 		$stylesheet[]   = $rtl_stylesheet;
 	}
 
 	$editor_styles = array_merge( $editor_styles, $stylesheet );
 }
 
 /**
  * Removes all visual editor stylesheets.
  *
  * @since 3.1.0
  *
  * @global array $editor_styles
  *
  * @return bool True on success, false if there were no stylesheets to remove.
  */
 function remove_editor_styles() {
 	if ( ! current_theme_supports( 'editor-style' ) ) {
 		return false;
 	}
 	_remove_theme_support( 'editor-style' );
 	if ( is_admin() ) {
 		$GLOBALS['editor_styles'] = array();
 	}
 	return true;
 }
 
 /**
  * Retrieves any registered editor stylesheet URLs.
  *
  * @since 4.0.0
  *
  * @global array $editor_styles Registered editor stylesheets
  *
  * @return string[] If registered, a list of editor stylesheet URLs.
  */
 function get_editor_stylesheets() {
 	$stylesheets = array();
 	// Load editor_style.css if the current theme supports it.
 	if ( ! empty( $GLOBALS['editor_styles'] ) && is_array( $GLOBALS['editor_styles'] ) ) {
 		$editor_styles = $GLOBALS['editor_styles'];
 
 		$editor_styles = array_unique( array_filter( $editor_styles ) );
 		$style_uri     = get_stylesheet_directory_uri();
 		$style_dir     = get_stylesheet_directory();
 
 		// Support externally referenced styles (like, say, fonts).
 		foreach ( $editor_styles as $key => $file ) {
 			if ( preg_match( '~^(https?:)?//~', $file ) ) {
 				$stylesheets[] = esc_url_raw( $file );
 				unset( $editor_styles[ $key ] );
 			}
 		}
 
 		// Look in a parent theme first, that way child theme CSS overrides.
 		if ( is_child_theme() ) {
 			$template_uri = get_template_directory_uri();
 			$template_dir = get_template_directory();
 
 			foreach ( $editor_styles as $key => $file ) {
 				if ( $file && file_exists( "$template_dir/$file" ) ) {
 					$stylesheets[] = "$template_uri/$file";
 				}
 			}
 		}
 
 		foreach ( $editor_styles as $file ) {
 			if ( $file && file_exists( "$style_dir/$file" ) ) {
 				$stylesheets[] = "$style_uri/$file";
 			}
 		}
 	}
 
 	/**
 	 * Filters the array of URLs of stylesheets applied to the editor.
 	 *
 	 * @since 4.3.0
 	 *
 	 * @param string[] $stylesheets Array of URLs of stylesheets to be applied to the editor.
 	 */
 	return apply_filters( 'editor_stylesheets', $stylesheets );
 }
 
 /**
  * Expands a theme's starter content configuration using core-provided data.
  *
  * @since 4.7.0
  *
  * @return array Array of starter content.
  */
 function get_theme_starter_content() {
 	$theme_support = get_theme_support( 'starter-content' );
 	if ( is_array( $theme_support ) && ! empty( $theme_support[0] ) && is_array( $theme_support[0] ) ) {
 		$config = $theme_support[0];
 	} else {
 		$config = array();
 	}
 
 	$core_content = array(
 		'widgets'   => array(
 			'text_business_info' => array(
 				'text',
 				array(
 					'title'  => _x( 'Find Us', 'Theme starter content' ),
 					'text'   => implode(
 						'',
 						array(
 							'<strong>' . _x( 'Address', 'Theme starter content' ) . "</strong>\n",
 							_x( '123 Main Street', 'Theme starter content' ) . "\n" . _x( 'New York, NY 10001', 'Theme starter content' ) . "\n\n",
 							'<strong>' . _x( 'Hours', 'Theme starter content' ) . "</strong>\n",
 							_x( 'Monday&ndash;Friday: 9:00AM&ndash;5:00PM', 'Theme starter content' ) . "\n" . _x( 'Saturday &amp; Sunday: 11:00AM&ndash;3:00PM', 'Theme starter content' ),
 						)
 					),
 					'filter' => true,
 					'visual' => true,
 				),
 			),
 			'text_about'         => array(
 				'text',
 				array(
 					'title'  => _x( 'About This Site', 'Theme starter content' ),
 					'text'   => _x( 'This may be a good place to introduce yourself and your site or include some credits.', 'Theme starter content' ),
 					'filter' => true,
 					'visual' => true,
 				),
 			),
 			'archives'           => array(
 				'archives',
 				array(
 					'title' => _x( 'Archives', 'Theme starter content' ),
 				),
 			),
 			'calendar'           => array(
 				'calendar',
 				array(
 					'title' => _x( 'Calendar', 'Theme starter content' ),
 				),
 			),
 			'categories'         => array(
 				'categories',
 				array(
 					'title' => _x( 'Categories', 'Theme starter content' ),
 				),
 			),
 			'meta'               => array(
 				'meta',
 				array(
 					'title' => _x( 'Meta', 'Theme starter content' ),
 				),
 			),
 			'recent-comments'    => array(
 				'recent-comments',
 				array(
 					'title' => _x( 'Recent Comments', 'Theme starter content' ),
 				),
 			),
 			'recent-posts'       => array(
 				'recent-posts',
 				array(
 					'title' => _x( 'Recent Posts', 'Theme starter content' ),
 				),
 			),
 			'search'             => array(
 				'search',
 				array(
 					'title' => _x( 'Search', 'Theme starter content' ),
 				),
 			),
 		),
 		'nav_menus' => array(
 			'link_home'       => array(
 				'type'  => 'custom',
 				'title' => _x( 'Home', 'Theme starter content' ),
 				'url'   => home_url( '/' ),
 			),
 			'page_home'       => array( // Deprecated in favor of 'link_home'.
 				'type'      => 'post_type',
 				'object'    => 'page',
 				'object_id' => '{{home}}',
 			),
 			'page_about'      => array(
 				'type'      => 'post_type',
 				'object'    => 'page',
 				'object_id' => '{{about}}',
 			),
 			'page_blog'       => array(
 				'type'      => 'post_type',
 				'object'    => 'page',
 				'object_id' => '{{blog}}',
 			),
 			'page_news'       => array(
 				'type'      => 'post_type',
 				'object'    => 'page',
 				'object_id' => '{{news}}',
 			),
 			'page_contact'    => array(
 				'type'      => 'post_type',
 				'object'    => 'page',
 				'object_id' => '{{contact}}',
 			),
 
 			'link_email'      => array(
 				'title' => _x( 'Email', 'Theme starter content' ),
 				'url'   => 'mailto:wordpress@example.com',
 			),
 			'link_facebook'   => array(
 				'title' => _x( 'Facebook', 'Theme starter content' ),
 				'url'   => 'https://www.facebook.com/wordpress',
 			),
 			'link_foursquare' => array(
 				'title' => _x( 'Foursquare', 'Theme starter content' ),
 				'url'   => 'https://foursquare.com/',
 			),
 			'link_github'     => array(
 				'title' => _x( 'GitHub', 'Theme starter content' ),
 				'url'   => 'https://github.com/wordpress/',
 			),
 			'link_instagram'  => array(
 				'title' => _x( 'Instagram', 'Theme starter content' ),
 				'url'   => 'https://www.instagram.com/explore/tags/wordcamp/',
 			),
 			'link_linkedin'   => array(
 				'title' => _x( 'LinkedIn', 'Theme starter content' ),
 				'url'   => 'https://www.linkedin.com/company/1089783',
 			),
 			'link_pinterest'  => array(
 				'title' => _x( 'Pinterest', 'Theme starter content' ),
 				'url'   => 'https://www.pinterest.com/',
 			),
 			'link_twitter'    => array(
 				'title' => _x( 'Twitter', 'Theme starter content' ),
 				'url'   => 'https://twitter.com/wordpress',
 			),
 			'link_yelp'       => array(
 				'title' => _x( 'Yelp', 'Theme starter content' ),
 				'url'   => 'https://www.yelp.com',
 			),
 			'link_youtube'    => array(
 				'title' => _x( 'YouTube', 'Theme starter content' ),
 				'url'   => 'https://www.youtube.com/channel/UCdof4Ju7amm1chz1gi1T2ZA',
 			),
 		),
 		'posts'     => array(
 			'home'             => array(
 				'post_type'    => 'page',
 				'post_title'   => _x( 'Home', 'Theme starter content' ),
 				'post_content' => sprintf(
 					"<!-- wp:paragraph -->\n<p>%s</p>\n<!-- /wp:paragraph -->",
 					_x( 'Welcome to your site! This is your homepage, which is what most visitors will see when they come to your site for the first time.', 'Theme starter content' )
 				),
 			),
 			'about'            => array(
 				'post_type'    => 'page',
 				'post_title'   => _x( 'About', 'Theme starter content' ),
 				'post_content' => sprintf(
 					"<!-- wp:paragraph -->\n<p>%s</p>\n<!-- /wp:paragraph -->",
 					_x( 'You might be an artist who would like to introduce yourself and your work here or maybe you&rsquo;re a business with a mission to describe.', 'Theme starter content' )
 				),
 			),
 			'contact'          => array(
 				'post_type'    => 'page',
 				'post_title'   => _x( 'Contact', 'Theme starter content' ),
 				'post_content' => sprintf(
 					"<!-- wp:paragraph -->\n<p>%s</p>\n<!-- /wp:paragraph -->",
 					_x( 'This is a page with some basic contact information, such as an address and phone number. You might also try a plugin to add a contact form.', 'Theme starter content' )
 				),
 			),
 			'blog'             => array(
 				'post_type'  => 'page',
 				'post_title' => _x( 'Blog', 'Theme starter content' ),
 			),
 			'news'             => array(
 				'post_type'  => 'page',
 				'post_title' => _x( 'News', 'Theme starter content' ),
 			),
 
 			'homepage-section' => array(
 				'post_type'    => 'page',
 				'post_title'   => _x( 'A homepage section', 'Theme starter content' ),
 				'post_content' => sprintf(
 					"<!-- wp:paragraph -->\n<p>%s</p>\n<!-- /wp:paragraph -->",
 					_x( 'This is an example of a homepage section. Homepage sections can be any page other than the homepage itself, including the page that shows your latest blog posts.', 'Theme starter content' )
 				),
 			),
 		),
 	);
 
 	$content = array();
 
 	foreach ( $config as $type => $args ) {
 		switch ( $type ) {
 			// Use options and theme_mods as-is.
 			case 'options':
 			case 'theme_mods':
 				$content[ $type ] = $config[ $type ];
 				break;
 
 			// Widgets are grouped into sidebars.
 			case 'widgets':
 				foreach ( $config[ $type ] as $sidebar_id => $widgets ) {
 					foreach ( $widgets as $id => $widget ) {
 						if ( is_array( $widget ) ) {
 
 							// Item extends core content.
 							if ( ! empty( $core_content[ $type ][ $id ] ) ) {
 								$widget = array(
 									$core_content[ $type ][ $id ][0],
 									array_merge( $core_content[ $type ][ $id ][1], $widget ),
 								);
 							}
 
 							$content[ $type ][ $sidebar_id ][] = $widget;
 						} elseif ( is_string( $widget ) && ! empty( $core_content[ $type ] ) && ! empty( $core_content[ $type ][ $widget ] ) ) {
 							$content[ $type ][ $sidebar_id ][] = $core_content[ $type ][ $widget ];
 						}
 					}
 				}
 				break;
 
 			// And nav menu items are grouped into nav menus.
 			case 'nav_menus':
 				foreach ( $config[ $type ] as $nav_menu_location => $nav_menu ) {
 
 					// Ensure nav menus get a name.
 					if ( empty( $nav_menu['name'] ) ) {
 						$nav_menu['name'] = $nav_menu_location;
 					}
 
 					$content[ $type ][ $nav_menu_location ]['name'] = $nav_menu['name'];
 
 					foreach ( $nav_menu['items'] as $id => $nav_menu_item ) {
 						if ( is_array( $nav_menu_item ) ) {
 
 							// Item extends core content.
 							if ( ! empty( $core_content[ $type ][ $id ] ) ) {
 								$nav_menu_item = array_merge( $core_content[ $type ][ $id ], $nav_menu_item );
 							}
 
 							$content[ $type ][ $nav_menu_location ]['items'][] = $nav_menu_item;
 						} elseif ( is_string( $nav_menu_item ) && ! empty( $core_content[ $type ] ) && ! empty( $core_content[ $type ][ $nav_menu_item ] ) ) {
 							$content[ $type ][ $nav_menu_location ]['items'][] = $core_content[ $type ][ $nav_menu_item ];
 						}
 					}
 				}
 				break;
 
 			// Attachments are posts but have special treatment.
 			case 'attachments':
 				foreach ( $config[ $type ] as $id => $item ) {
 					if ( ! empty( $item['file'] ) ) {
 						$content[ $type ][ $id ] = $item;
 					}
 				}
 				break;
 
 			// All that's left now are posts (besides attachments).
 			// Not a default case for the sake of clarity and future work.
 			case 'posts':
 				foreach ( $config[ $type ] as $id => $item ) {
 					if ( is_array( $item ) ) {
 
 						// Item extends core content.
 						if ( ! empty( $core_content[ $type ][ $id ] ) ) {
 							$item = array_merge( $core_content[ $type ][ $id ], $item );
 						}
 
 						// Enforce a subset of fields.
 						$content[ $type ][ $id ] = wp_array_slice_assoc(
 							$item,
 							array(
 								'post_type',
 								'post_title',
 								'post_excerpt',
 								'post_name',
 								'post_content',
 								'menu_order',
 								'comment_status',
 								'thumbnail',
 								'template',
 							)
 						);
 					} elseif ( is_string( $item ) && ! empty( $core_content[ $type ][ $item ] ) ) {
 						$content[ $type ][ $item ] = $core_content[ $type ][ $item ];
 					}
 				}
 				break;
 		}
 	}
 
 	/**
 	 * Filters the expanded array of starter content.
 	 *
 	 * @since 4.7.0
 	 *
 	 * @param array $content Array of starter content.
 	 * @param array $config  Array of theme-specific starter content configuration.
 	 */
 	return apply_filters( 'get_theme_starter_content', $content, $config );
 }
 
 /**
  * Registers theme support for a given feature.
  *
  * Must be called in the theme's functions.php file to work.
  * If attached to a hook, it must be {@see 'after_setup_theme'}.
  * The {@see 'init'} hook may be too late for some features.
  *
  * Example usage:
  *
  *     add_theme_support( 'title-tag' );
  *     add_theme_support( 'custom-logo', array(
  *         'height' => 480,
  *         'width'  => 720,
  *     ) );
  *
  * @since 2.9.0
  * @since 3.4.0 The `custom-header-uploads` feature was deprecated.
  * @since 3.6.0 The `html5` feature was added.
  * @since 3.9.0 The `html5` feature now also accepts 'gallery' and 'caption'.
  * @since 4.1.0 The `title-tag` feature was added.
  * @since 4.5.0 The `customize-selective-refresh-widgets` feature was added.
  * @since 4.7.0 The `starter-content` feature was added.
  * @since 5.0.0 The `responsive-embeds`, `align-wide`, `dark-editor-style`, `disable-custom-colors`,
  *              `disable-custom-font-sizes`, `editor-color-palette`, `editor-font-sizes`,
  *              `editor-styles`, and `wp-block-styles` features were added.
  * @since 5.3.0 The `html5` feature now also accepts 'script' and 'style'.
  * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
  *              by adding it to the function signature.
  * @since 5.5.0 The `core-block-patterns` feature was added and is enabled by default.
  * @since 5.5.0 The `custom-logo` feature now also accepts 'unlink-homepage-logo'.
  * @since 5.6.0 The `post-formats` feature warns if no array is passed.
  * @since 5.8.0 The `widgets-block-editor` feature enables the Widgets block editor.
  *
  * @global array $_wp_theme_features
  *
  * @param string $feature The feature being added. Likely core values include:
  *                          - 'admin-bar'
  *                          - 'align-wide'
  *                          - 'automatic-feed-links'
  *                          - 'core-block-patterns'
  *                          - 'custom-background'
  *                          - 'custom-header'
  *                          - 'custom-line-height'
  *                          - 'custom-logo'
  *                          - 'customize-selective-refresh-widgets'
  *                          - 'custom-spacing'
  *                          - 'custom-units'
  *                          - 'dark-editor-style'
  *                          - 'disable-custom-colors'
  *                          - 'disable-custom-font-sizes'
  *                          - 'editor-color-palette'
  *                          - 'editor-gradient-presets'
  *                          - 'editor-font-sizes'
  *                          - 'editor-styles'
  *                          - 'featured-content'
  *                          - 'html5'
  *                          - 'menus'
  *                          - 'post-formats'
  *                          - 'post-thumbnails'
  *                          - 'responsive-embeds'
  *                          - 'starter-content'
  *                          - 'title-tag'
  *                          - 'wp-block-styles'
  *                          - 'widgets'
  *                          - 'widgets-block-editor'
  * @param mixed  ...$args Optional extra arguments to pass along with certain features.
  * @return void|false Void on success, false on failure.
  */
 function add_theme_support( $feature, ...$args ) {
 	global $_wp_theme_features;
 
 	if ( ! $args ) {
 		$args = true;
 	}
 
 	switch ( $feature ) {
 		case 'post-thumbnails':
 			// All post types are already supported.
 			if ( true === get_theme_support( 'post-thumbnails' ) ) {
 				return;
 			}
 
 			/*
 			 * Merge post types with any that already declared their support
 			 * for post thumbnails.
 			 */
 			if ( isset( $args[0] ) && is_array( $args[0] ) && isset( $_wp_theme_features['post-thumbnails'] ) ) {
 				$args[0] = array_unique( array_merge( $_wp_theme_features['post-thumbnails'][0], $args[0] ) );
 			}
 
 			break;
 
 		case 'post-formats':
 			if ( isset( $args[0] ) && is_array( $args[0] ) ) {
 				$post_formats = get_post_format_slugs();
 				unset( $post_formats['standard'] );
 
 				$args[0] = array_intersect( $args[0], array_keys( $post_formats ) );
 			} else {
 				_doing_it_wrong( "add_theme_support( 'post-formats' )", __( 'You need to pass an array of post formats.' ), '5.6.0' );
 				return false;
 			}
 			break;
 
 		case 'html5':
 			// You can't just pass 'html5', you need to pass an array of types.
 			if ( empty( $args[0] ) ) {
 				// Build an array of types for back-compat.
 				$args = array( 0 => array( 'comment-list', 'comment-form', 'search-form' ) );
 			} elseif ( ! isset( $args[0] ) || ! is_array( $args[0] ) ) {
 				_doing_it_wrong( "add_theme_support( 'html5' )", __( 'You need to pass an array of types.' ), '3.6.1' );
 				return false;
 			}
 
 			// Calling 'html5' again merges, rather than overwrites.
 			if ( isset( $_wp_theme_features['html5'] ) ) {
 				$args[0] = array_merge( $_wp_theme_features['html5'][0], $args[0] );
 			}
 			break;
 
 		case 'custom-logo':
 			if ( true === $args ) {
 				$args = array( 0 => array() );
 			}
 			$defaults = array(
 				'width'                => null,
 				'height'               => null,
 				'flex-width'           => false,
 				'flex-height'          => false,
 				'header-text'          => '',
 				'unlink-homepage-logo' => false,
 			);
 			$args[0]  = wp_parse_args( array_intersect_key( $args[0], $defaults ), $defaults );
 
 			// Allow full flexibility if no size is specified.
 			if ( is_null( $args[0]['width'] ) && is_null( $args[0]['height'] ) ) {
 				$args[0]['flex-width']  = true;
 				$args[0]['flex-height'] = true;
 			}
 			break;
 
 		case 'custom-header-uploads':
 			return add_theme_support( 'custom-header', array( 'uploads' => true ) );
 
 		case 'custom-header':
 			if ( true === $args ) {
 				$args = array( 0 => array() );
 			}
 
 			$defaults = array(
 				'default-image'          => '',
 				'random-default'         => false,
 				'width'                  => 0,
 				'height'                 => 0,
 				'flex-height'            => false,
 				'flex-width'             => false,
 				'default-text-color'     => '',
 				'header-text'            => true,
 				'uploads'                => true,
 				'wp-head-callback'       => '',
 				'admin-head-callback'    => '',
 				'admin-preview-callback' => '',
 				'video'                  => false,
 				'video-active-callback'  => 'is_front_page',
 			);
 
 			$jit = isset( $args[0]['__jit'] );
 			unset( $args[0]['__jit'] );
 
 			// Merge in data from previous add_theme_support() calls.
 			// The first value registered wins. (A child theme is set up first.)
 			if ( isset( $_wp_theme_features['custom-header'] ) ) {
 				$args[0] = wp_parse_args( $_wp_theme_features['custom-header'][0], $args[0] );
 			}
 
 			// Load in the defaults at the end, as we need to insure first one wins.
 			// This will cause all constants to be defined, as each arg will then be set to the default.
 			if ( $jit ) {
 				$args[0] = wp_parse_args( $args[0], $defaults );
 			}
 
 			/*
 			 * If a constant was defined, use that value. Otherwise, define the constant to ensure
 			 * the constant is always accurate (and is not defined later,  overriding our value).
 			 * As stated above, the first value wins.
 			 * Once we get to wp_loaded (just-in-time), define any constants we haven't already.
 			 * Constants are lame. Don't reference them. This is just for backward compatibility.
 			 */
 
 			if ( defined( 'NO_HEADER_TEXT' ) ) {
 				$args[0]['header-text'] = ! NO_HEADER_TEXT;
 			} elseif ( isset( $args[0]['header-text'] ) ) {
 				define( 'NO_HEADER_TEXT', empty( $args[0]['header-text'] ) );
 			}
 
 			if ( defined( 'HEADER_IMAGE_WIDTH' ) ) {
 				$args[0]['width'] = (int) HEADER_IMAGE_WIDTH;
 			} elseif ( isset( $args[0]['width'] ) ) {
 				define( 'HEADER_IMAGE_WIDTH', (int) $args[0]['width'] );
 			}
 
 			if ( defined( 'HEADER_IMAGE_HEIGHT' ) ) {
 				$args[0]['height'] = (int) HEADER_IMAGE_HEIGHT;
 			} elseif ( isset( $args[0]['height'] ) ) {
 				define( 'HEADER_IMAGE_HEIGHT', (int) $args[0]['height'] );
 			}
 
 			if ( defined( 'HEADER_TEXTCOLOR' ) ) {
 				$args[0]['default-text-color'] = HEADER_TEXTCOLOR;
 			} elseif ( isset( $args[0]['default-text-color'] ) ) {
 				define( 'HEADER_TEXTCOLOR', $args[0]['default-text-color'] );
 			}
 
 			if ( defined( 'HEADER_IMAGE' ) ) {
 				$args[0]['default-image'] = HEADER_IMAGE;
 			} elseif ( isset( $args[0]['default-image'] ) ) {
 				define( 'HEADER_IMAGE', $args[0]['default-image'] );
 			}
 
 			if ( $jit && ! empty( $args[0]['default-image'] ) ) {
 				$args[0]['random-default'] = false;
 			}
 
 			// If headers are supported, and we still don't have a defined width or height,
 			// we have implicit flex sizes.
 			if ( $jit ) {
 				if ( empty( $args[0]['width'] ) && empty( $args[0]['flex-width'] ) ) {
 					$args[0]['flex-width'] = true;
 				}
 				if ( empty( $args[0]['height'] ) && empty( $args[0]['flex-height'] ) ) {
 					$args[0]['flex-height'] = true;
 				}
 			}
 
 			break;
 
 		case 'custom-background':
 			if ( true === $args ) {
 				$args = array( 0 => array() );
 			}
 
 			$defaults = array(
 				'default-image'          => '',
 				'default-preset'         => 'default',
 				'default-position-x'     => 'left',
 				'default-position-y'     => 'top',
 				'default-size'           => 'auto',
 				'default-repeat'         => 'repeat',
 				'default-attachment'     => 'scroll',
 				'default-color'          => '',
 				'wp-head-callback'       => '_custom_background_cb',
 				'admin-head-callback'    => '',
 				'admin-preview-callback' => '',
 			);
 
 			$jit = isset( $args[0]['__jit'] );
 			unset( $args[0]['__jit'] );
 
 			// Merge in data from previous add_theme_support() calls. The first value registered wins.
 			if ( isset( $_wp_theme_features['custom-background'] ) ) {
 				$args[0] = wp_parse_args( $_wp_theme_features['custom-background'][0], $args[0] );
 			}
 
 			if ( $jit ) {
 				$args[0] = wp_parse_args( $args[0], $defaults );
 			}
 
 			if ( defined( 'BACKGROUND_COLOR' ) ) {
 				$args[0]['default-color'] = BACKGROUND_COLOR;
 			} elseif ( isset( $args[0]['default-color'] ) || $jit ) {
 				define( 'BACKGROUND_COLOR', $args[0]['default-color'] );
 			}
 
 			if ( defined( 'BACKGROUND_IMAGE' ) ) {
 				$args[0]['default-image'] = BACKGROUND_IMAGE;
 			} elseif ( isset( $args[0]['default-image'] ) || $jit ) {
 				define( 'BACKGROUND_IMAGE', $args[0]['default-image'] );
 			}
 
 			break;
 
 		// Ensure that 'title-tag' is accessible in the admin.
 		case 'title-tag':
 			// Can be called in functions.php but must happen before wp_loaded, i.e. not in header.php.
 			if ( did_action( 'wp_loaded' ) ) {
 				_doing_it_wrong(
 					"add_theme_support( 'title-tag' )",
 					sprintf(
 						/* translators: 1: title-tag, 2: wp_loaded */
 						__( 'Theme support for %1$s should be registered before the %2$s hook.' ),
 						'<code>title-tag</code>',
 						'<code>wp_loaded</code>'
 					),
 					'4.1.0'
 				);
 
 				return false;
 			}
 	}
 
 	$_wp_theme_features[ $feature ] = $args;
 }
 
 /**
  * Registers the internal custom header and background routines.
  *
  * @since 3.4.0
  * @access private
  *
  * @global Custom_Image_Header $custom_image_header
  * @global Custom_Background   $custom_background
  */
 function _custom_header_background_just_in_time() {
 	global $custom_image_header, $custom_background;
 
 	if ( current_theme_supports( 'custom-header' ) ) {
 		// In case any constants were defined after an add_custom_image_header() call, re-run.
 		add_theme_support( 'custom-header', array( '__jit' => true ) );
 
 		$args = get_theme_support( 'custom-header' );
 		if ( $args[0]['wp-head-callback'] ) {
 			add_action( 'wp_head', $args[0]['wp-head-callback'] );
 		}
 
 		if ( is_admin() ) {
 			require_once ABSPATH . 'wp-admin/includes/class-custom-image-header.php';
 			$custom_image_header = new Custom_Image_Header( $args[0]['admin-head-callback'], $args[0]['admin-preview-callback'] );
 		}
 	}
 
 	if ( current_theme_supports( 'custom-background' ) ) {
 		// In case any constants were defined after an add_custom_background() call, re-run.
 		add_theme_support( 'custom-background', array( '__jit' => true ) );
 
 		$args = get_theme_support( 'custom-background' );
 		add_action( 'wp_head', $args[0]['wp-head-callback'] );
 
 		if ( is_admin() ) {
 			require_once ABSPATH . 'wp-admin/includes/class-custom-background.php';
 			$custom_background = new Custom_Background( $args[0]['admin-head-callback'], $args[0]['admin-preview-callback'] );
 		}
 	}
 }
 
 /**
  * Adds CSS to hide header text for custom logo, based on Customizer setting.
  *
  * @since 4.5.0
  * @access private
  */
 function _custom_logo_header_styles() {
 	if ( ! current_theme_supports( 'custom-header', 'header-text' ) && get_theme_support( 'custom-logo', 'header-text' ) && ! get_theme_mod( 'header_text', true ) ) {
 		$classes = (array) get_theme_support( 'custom-logo', 'header-text' );
 		$classes = array_map( 'sanitize_html_class', $classes );
 		$classes = '.' . implode( ', .', $classes );
 
 		$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
 		?>
 		<!-- Custom Logo: hide header text -->
 		<style id="custom-logo-css"<?php echo $type_attr; ?>>
 			<?php echo $classes; ?> {
 				position: absolute;
 				clip: rect(1px, 1px, 1px, 1px);
 			}
 		</style>
 		<?php
 	}
 }
 
 /**
  * Gets the theme support arguments passed when registering that support.
  *
  * Example usage:
  *
  *     get_theme_support( 'custom-logo' );
  *     get_theme_support( 'custom-header', 'width' );
  *
  * @since 3.1.0
  * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
  *              by adding it to the function signature.
  *
  * @global array $_wp_theme_features
  *
  * @param string $feature The feature to check. See add_theme_support() for the list
  *                        of possible values.
  * @param mixed  ...$args Optional extra arguments to be checked against certain features.
  * @return mixed The array of extra arguments or the value for the registered feature.
  */
 function get_theme_support( $feature, ...$args ) {
 	global $_wp_theme_features;
 	if ( ! isset( $_wp_theme_features[ $feature ] ) ) {
 		return false;
 	}
 
 	if ( ! $args ) {
 		return $_wp_theme_features[ $feature ];
 	}
 
 	switch ( $feature ) {
 		case 'custom-logo':
 		case 'custom-header':
 		case 'custom-background':
 			if ( isset( $_wp_theme_features[ $feature ][0][ $args[0] ] ) ) {
 				return $_wp_theme_features[ $feature ][0][ $args[0] ];
 			}
 			return false;
 
 		default:
 			return $_wp_theme_features[ $feature ];
 	}
 }
 
 /**
  * Allows a theme to de-register its support of a certain feature
  *
  * Should be called in the theme's functions.php file. Generally would
  * be used for child themes to override support from the parent theme.
  *
  * @since 3.0.0
  *
  * @see add_theme_support()
  *
  * @param string $feature The feature being removed. See add_theme_support() for the list
  *                        of possible values.
  * @return bool|void Whether feature was removed.
  */
 function remove_theme_support( $feature ) {
 	// Do not remove internal registrations that are not used directly by themes.
 	if ( in_array( $feature, array( 'editor-style', 'widgets', 'menus' ), true ) ) {
 		return false;
 	}
 
 	return _remove_theme_support( $feature );
 }
 
 /**
  * Do not use. Removes theme support internally without knowledge of those not used
  * by themes directly.
  *
  * @access private
  * @since 3.1.0
  * @global array               $_wp_theme_features
  * @global Custom_Image_Header $custom_image_header
  * @global Custom_Background   $custom_background
  *
  * @param string $feature The feature being removed. See add_theme_support() for the list
  *                        of possible values.
  * @return bool True if support was removed, false if the feature was not registered.
  */
 function _remove_theme_support( $feature ) {
 	global $_wp_theme_features;
 
 	switch ( $feature ) {
 		case 'custom-header-uploads':
 			if ( ! isset( $_wp_theme_features['custom-header'] ) ) {
 				return false;
 			}
 			add_theme_support( 'custom-header', array( 'uploads' => false ) );
 			return; // Do not continue - custom-header-uploads no longer exists.
 	}
 
 	if ( ! isset( $_wp_theme_features[ $feature ] ) ) {
 		return false;
 	}
 
 	switch ( $feature ) {
 		case 'custom-header':
 			if ( ! did_action( 'wp_loaded' ) ) {
 				break;
 			}
 			$support = get_theme_support( 'custom-header' );
 			if ( isset( $support[0]['wp-head-callback'] ) ) {
 				remove_action( 'wp_head', $support[0]['wp-head-callback'] );
 			}
 			if ( isset( $GLOBALS['custom_image_header'] ) ) {
 				remove_action( 'admin_menu', array( $GLOBALS['custom_image_header'], 'init' ) );
 				unset( $GLOBALS['custom_image_header'] );
 			}
 			break;
 
 		case 'custom-background':
 			if ( ! did_action( 'wp_loaded' ) ) {
 				break;
 			}
 			$support = get_theme_support( 'custom-background' );
 			if ( isset( $support[0]['wp-head-callback'] ) ) {
 				remove_action( 'wp_head', $support[0]['wp-head-callback'] );
 			}
 			remove_action( 'admin_menu', array( $GLOBALS['custom_background'], 'init' ) );
 			unset( $GLOBALS['custom_background'] );
 			break;
 	}
 
 	unset( $_wp_theme_features[ $feature ] );
 
 	return true;
 }
 
 /**
  * Checks a theme's support for a given feature.
  *
  * Example usage:
  *
  *     current_theme_supports( 'custom-logo' );
  *     current_theme_supports( 'html5', 'comment-form' );
  *
  * @since 2.9.0
  * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
  *              by adding it to the function signature.
  *
  * @global array $_wp_theme_features
  *
  * @param string $feature The feature being checked. See add_theme_support() for the list
  *                        of possible values.
  * @param mixed  ...$args Optional extra arguments to be checked against certain features.
  * @return bool True if the current theme supports the feature, false otherwise.
  */
 function current_theme_supports( $feature, ...$args ) {
 	global $_wp_theme_features;
 
 	if ( 'custom-header-uploads' === $feature ) {
 		return current_theme_supports( 'custom-header', 'uploads' );
 	}
 
 	if ( ! isset( $_wp_theme_features[ $feature ] ) ) {
 		return false;
 	}
 
 	// If no args passed then no extra checks need be performed.
 	if ( ! $args ) {
 		return true;
 	}
 
 	switch ( $feature ) {
 		case 'post-thumbnails':
 			/*
 			 * post-thumbnails can be registered for only certain content/post types
 			 * by passing an array of types to add_theme_support().
 			 * If no array was passed, then any type is accepted.
 			 */
 			if ( true === $_wp_theme_features[ $feature ] ) {  // Registered for all types.
 				return true;
 			}
 			$content_type = $args[0];
 			return in_array( $content_type, $_wp_theme_features[ $feature ][0], true );
 
 		case 'html5':
 		case 'post-formats':
 			/*
 			 * Specific post formats can be registered by passing an array of types
 			 * to add_theme_support().
 			 *
 			 * Specific areas of HTML5 support *must* be passed via an array to add_theme_support().
 			 */
 			$type = $args[0];
 			return in_array( $type, $_wp_theme_features[ $feature ][0], true );
 
 		case 'custom-logo':
 		case 'custom-header':
 		case 'custom-background':
 			// Specific capabilities can be registered by passing an array to add_theme_support().
 			return ( isset( $_wp_theme_features[ $feature ][0][ $args[0] ] ) && $_wp_theme_features[ $feature ][0][ $args[0] ] );
 	}
 
 	/**
 	 * Filters whether the current theme supports a specific feature.
 	 *
 	 * The dynamic portion of the hook name, `$feature`, refers to the specific
 	 * theme feature. See add_theme_support() for the list of possible values.
 	 *
 	 * @since 3.4.0
 	 *
 	 * @param bool   $supports Whether the current theme supports the given feature. Default true.
 	 * @param array  $args     Array of arguments for the feature.
 	 * @param string $feature  The theme feature.
 	 */
 	return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[ $feature ] ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 }
 
 /**
  * Checks a theme's support for a given feature before loading the functions which implement it.
  *
  * @since 2.9.0
  *
  * @param string $feature The feature being checked. See add_theme_support() for the list
  *                        of possible values.
  * @param string $include Path to the file.
  * @return bool True if the current theme supports the supplied feature, false otherwise.
  */
 function require_if_theme_supports( $feature, $include ) {
 	if ( current_theme_supports( $feature ) ) {
 		require $include;
 		return true;
 	}
 	return false;
 }
 
 /**
  * Registers a theme feature for use in add_theme_support().
  *
  * This does not indicate that the current theme supports the feature, it only describes
  * the feature's supported options.
  *
  * @since 5.5.0
  *
  * @see add_theme_support()
  *
  * @global array $_wp_registered_theme_features
  *
  * @param string $feature The name uniquely identifying the feature. See add_theme_support()
  *                        for the list of possible values.
  * @param array  $args {
  *     Data used to describe the theme.
  *
  *     @type string     $type         The type of data associated with this feature.
  *                                    Valid values are 'string', 'boolean', 'integer',
  *                                    'number', 'array', and 'object'. Defaults to 'boolean'.
  *     @type boolean    $variadic     Does this feature utilize the variadic support
  *                                    of add_theme_support(), or are all arguments specified
  *                                    as the second parameter. Must be used with the "array" type.
  *     @type string     $description  A short description of the feature. Included in
  *                                    the Themes REST API schema. Intended for developers.
  *     @type bool|array $show_in_rest {
  *         Whether this feature should be included in the Themes REST API endpoint.
  *         Defaults to not being included. When registering an 'array' or 'object' type,
  *         this argument must be an array with the 'schema' key.
  *
  *         @type array    $schema           Specifies the JSON Schema definition describing
  *                                          the feature. If any objects in the schema do not include
  *                                          the 'additionalProperties' keyword, it is set to false.
  *         @type string   $name             An alternate name to be used as the property name
  *                                          in the REST API.
  *         @type callable $prepare_callback A function used to format the theme support in the REST API.
  *                                          Receives the raw theme support value.
  *      }
  * }
  * @return true|WP_Error True if the theme feature was successfully registered, a WP_Error object if not.
  */
 function register_theme_feature( $feature, $args = array() ) {
 	global $_wp_registered_theme_features;
 
 	if ( ! is_array( $_wp_registered_theme_features ) ) {
 		$_wp_registered_theme_features = array();
 	}
 
 	$defaults = array(
 		'type'         => 'boolean',
 		'variadic'     => false,
 		'description'  => '',
 		'show_in_rest' => false,
 	);
 
 	$args = wp_parse_args( $args, $defaults );
 
 	if ( true === $args['show_in_rest'] ) {
 		$args['show_in_rest'] = array();
 	}
 
 	if ( is_array( $args['show_in_rest'] ) ) {
 		$args['show_in_rest'] = wp_parse_args(
 			$args['show_in_rest'],
 			array(
 				'schema'           => array(),
 				'name'             => $feature,
 				'prepare_callback' => null,
 			)
 		);
 	}
 
 	if ( ! in_array( $args['type'], array( 'string', 'boolean', 'integer', 'number', 'array', 'object' ), true ) ) {
 		return new WP_Error(
 			'invalid_type',
 			__( 'The feature "type" is not valid JSON Schema type.' )
 		);
 	}
 
 	if ( true === $args['variadic'] && 'array' !== $args['type'] ) {
 		return new WP_Error(
 			'variadic_must_be_array',
 			__( 'When registering a "variadic" theme feature, the "type" must be an "array".' )
 		);
 	}
 
 	if ( false !== $args['show_in_rest'] && in_array( $args['type'], array( 'array', 'object' ), true ) ) {
 		if ( ! is_array( $args['show_in_rest'] ) || empty( $args['show_in_rest']['schema'] ) ) {
 			return new WP_Error(
 				'missing_schema',
 				__( 'When registering an "array" or "object" feature to show in the REST API, the feature\'s schema must also be defined.' )
 			);
 		}
 
 		if ( 'array' === $args['type'] && ! isset( $args['show_in_rest']['schema']['items'] ) ) {
 			return new WP_Error(
 				'missing_schema_items',
 				__( 'When registering an "array" feature, the feature\'s schema must include the "items" keyword.' )
 			);
 		}
 
 		if ( 'object' === $args['type'] && ! isset( $args['show_in_rest']['schema']['properties'] ) ) {
 			return new WP_Error(
 				'missing_schema_properties',
 				__( 'When registering an "object" feature, the feature\'s schema must include the "properties" keyword.' )
 			);
 		}
 	}
 
 	if ( is_array( $args['show_in_rest'] ) ) {
 		if ( isset( $args['show_in_rest']['prepare_callback'] ) && ! is_callable( $args['show_in_rest']['prepare_callback'] ) ) {
 			return new WP_Error(
 				'invalid_rest_prepare_callback',
 				sprintf(
 					/* translators: %s: prepare_callback */
 					__( 'The "%s" must be a callable function.' ),
 					'prepare_callback'
 				)
 			);
 		}
 
 		$args['show_in_rest']['schema'] = wp_parse_args(
 			$args['show_in_rest']['schema'],
 			array(
 				'description' => $args['description'],
 				'type'        => $args['type'],
 				'default'     => false,
 			)
 		);
 
 		if ( is_bool( $args['show_in_rest']['schema']['default'] )
 			&& ! in_array( 'boolean', (array) $args['show_in_rest']['schema']['type'], true )
 		) {
 			// Automatically include the "boolean" type when the default value is a boolean.
 			$args['show_in_rest']['schema']['type'] = (array) $args['show_in_rest']['schema']['type'];
 			array_unshift( $args['show_in_rest']['schema']['type'], 'boolean' );
 		}
 
 		$args['show_in_rest']['schema'] = rest_default_additional_properties_to_false( $args['show_in_rest']['schema'] );
 	}
 
 	$_wp_registered_theme_features[ $feature ] = $args;
 
 	return true;
 }
 
 /**
  * Gets the list of registered theme features.
  *
  * @since 5.5.0
  *
  * @global array $_wp_registered_theme_features
  *
  * @return array[] List of theme features, keyed by their name.
  */
 function get_registered_theme_features() {
 	global $_wp_registered_theme_features;
 
 	if ( ! is_array( $_wp_registered_theme_features ) ) {
 		return array();
 	}
 
 	return $_wp_registered_theme_features;
 }
 
 /**
  * Gets the registration config for a theme feature.
  *
  * @since 5.5.0
  *
  * @global array $_wp_registered_theme_features
  *
  * @param string $feature The feature name. See add_theme_support() for the list
  *                        of possible values.
  * @return array|null The registration args, or null if the feature was not registered.
  */
 function get_registered_theme_feature( $feature ) {
 	global $_wp_registered_theme_features;
 
 	if ( ! is_array( $_wp_registered_theme_features ) ) {
 		return null;
 	}
 
 	return isset( $_wp_registered_theme_features[ $feature ] ) ? $_wp_registered_theme_features[ $feature ] : null;
 }
 
 /**
  * Checks an attachment being deleted to see if it's a header or background image.
  *
  * If true it removes the theme modification which would be pointing at the deleted
  * attachment.
  *
  * @access private
  * @since 3.0.0
  * @since 4.3.0 Also removes `header_image_data`.
  * @since 4.5.0 Also removes custom logo theme mods.
  *
  * @param int $id The attachment ID.
  */
 function _delete_attachment_theme_mod( $id ) {
 	$attachment_image = wp_get_attachment_url( $id );
 	$header_image     = get_header_image();
 	$background_image = get_background_image();
 	$custom_logo_id   = get_theme_mod( 'custom_logo' );
 
 	if ( $custom_logo_id && $custom_logo_id == $id ) {
 		remove_theme_mod( 'custom_logo' );
 		remove_theme_mod( 'header_text' );
 	}
 
 	if ( $header_image && $header_image == $attachment_image ) {
 		remove_theme_mod( 'header_image' );
 		remove_theme_mod( 'header_image_data' );
 	}
 
 	if ( $background_image && $background_image == $attachment_image ) {
 		remove_theme_mod( 'background_image' );
 	}
 }
 
 /**
  * Checks if a theme has been changed and runs 'after_switch_theme' hook on the next WP load.
  *
  * See {@see 'after_switch_theme'}.
  *
  * @since 3.3.0
  */
 function check_theme_switched() {
 	$stylesheet = get_option( 'theme_switched' );
 	if ( $stylesheet ) {
 		$old_theme = wp_get_theme( $stylesheet );
 
 		// Prevent widget & menu mapping from running since Customizer already called it up front.
 		if ( get_option( 'theme_switched_via_customizer' ) ) {
 			remove_action( 'after_switch_theme', '_wp_menus_changed' );
 			remove_action( 'after_switch_theme', '_wp_sidebars_changed' );
 			update_option( 'theme_switched_via_customizer', false );
 		}
 
 		if ( $old_theme->exists() ) {
 			/**
 			 * Fires on the first WP load after a theme switch if the old theme still exists.
 			 *
 			 * This action fires multiple times and the parameters differs
 			 * according to the context, if the old theme exists or not.
 			 * If the old theme is missing, the parameter will be the slug
 			 * of the old theme.
 			 *
 			 * @since 3.3.0
 			 *
 			 * @param string   $old_name  Old theme name.
 			 * @param WP_Theme $old_theme WP_Theme instance of the old theme.
 			 */
 			do_action( 'after_switch_theme', $old_theme->get( 'Name' ), $old_theme );
 		} else {
 			/** This action is documented in wp-includes/theme.php */
 			do_action( 'after_switch_theme', $stylesheet, $old_theme );
 		}
 		flush_rewrite_rules();
 
 		update_option( 'theme_switched', false );
 	}
 }
 
 /**
  * Includes and instantiates the WP_Customize_Manager class.
  *
  * Loads the Customizer at plugins_loaded when accessing the customize.php admin
  * page or when any request includes a wp_customize=on param or a customize_changeset
  * param (a UUID). This param is a signal for whether to bootstrap the Customizer when
  * WordPress is loading, especially in the Customizer preview
  * or when making Customizer Ajax requests for widgets or menus.
  *
  * @since 3.4.0
  *
  * @global WP_Customize_Manager $wp_customize
  */
 function _wp_customize_include() {
 
 	$is_customize_admin_page = ( is_admin() && 'customize.php' === basename( $_SERVER['PHP_SELF'] ) );
 	$should_include          = (
 		$is_customize_admin_page
 		||
 		( isset( $_REQUEST['wp_customize'] ) && 'on' === $_REQUEST['wp_customize'] )
 		||
 		( ! empty( $_GET['customize_changeset_uuid'] ) || ! empty( $_POST['customize_changeset_uuid'] ) )
 	);
 
 	if ( ! $should_include ) {
 		return;
 	}
 
 	/*
 	 * Note that wp_unslash() is not being used on the input vars because it is
 	 * called before wp_magic_quotes() gets called. Besides this fact, none of
 	 * the values should contain any characters needing slashes anyway.
 	 */
 	$keys       = array( 'changeset_uuid', 'customize_changeset_uuid', 'customize_theme', 'theme', 'customize_messenger_channel', 'customize_autosaved' );
 	$input_vars = array_merge(
 		wp_array_slice_assoc( $_GET, $keys ),
 		wp_array_slice_assoc( $_POST, $keys )
 	);
 
 	$theme             = null;
 	$autosaved         = null;
 	$messenger_channel = null;
 
 	// Value false indicates UUID should be determined after_setup_theme
 	// to either re-use existing saved changeset or else generate a new UUID if none exists.
 	$changeset_uuid = false;
 
 	// Set initially fo false since defaults to true for back-compat;
 	// can be overridden via the customize_changeset_branching filter.
 	$branching = false;
 
 	if ( $is_customize_admin_page && isset( $input_vars['changeset_uuid'] ) ) {
 		$changeset_uuid = sanitize_key( $input_vars['changeset_uuid'] );
 	} elseif ( ! empty( $input_vars['customize_changeset_uuid'] ) ) {
 		$changeset_uuid = sanitize_key( $input_vars['customize_changeset_uuid'] );
 	}
 
 	// Note that theme will be sanitized via WP_Theme.
 	if ( $is_customize_admin_page && isset( $input_vars['theme'] ) ) {
 		$theme = $input_vars['theme'];
 	} elseif ( isset( $input_vars['customize_theme'] ) ) {
 		$theme = $input_vars['customize_theme'];
 	}
 
 	if ( ! empty( $input_vars['customize_autosaved'] ) ) {
 		$autosaved = true;
 	}
 
 	if ( isset( $input_vars['customize_messenger_channel'] ) ) {
 		$messenger_channel = sanitize_key( $input_vars['customize_messenger_channel'] );
 	}
 
 	/*
 	 * Note that settings must be previewed even outside the customizer preview
 	 * and also in the customizer pane itself. This is to enable loading an existing
 	 * changeset into the customizer. Previewing the settings only has to be prevented
 	 * here in the case of a customize_save action because this will cause WP to think
 	 * there is nothing changed that needs to be saved.
 	 */
 	$is_customize_save_action = (
 		wp_doing_ajax()
 		&&
 		isset( $_REQUEST['action'] )
 		&&
 		'customize_save' === wp_unslash( $_REQUEST['action'] )
 	);
 	$settings_previewed       = ! $is_customize_save_action;
 
 	require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
 	$GLOBALS['wp_customize'] = new WP_Customize_Manager( compact( 'changeset_uuid', 'theme', 'messenger_channel', 'settings_previewed', 'autosaved', 'branching' ) );
 }
 
 /**
  * Publishes a snapshot's changes.
  *
  * @since 4.7.0
  * @access private
  *
  * @global wpdb                 $wpdb         WordPress database abstraction object.
  * @global WP_Customize_Manager $wp_customize Customizer instance.
  *
  * @param string  $new_status     New post status.
  * @param string  $old_status     Old post status.
  * @param WP_Post $changeset_post Changeset post object.
  */
 function _wp_customize_publish_changeset( $new_status, $old_status, $changeset_post ) {
 	global $wp_customize, $wpdb;
 
 	$is_publishing_changeset = (
 		'customize_changeset' === $changeset_post->post_type
 		&&
 		'publish' === $new_status
 		&&
 		'publish' !== $old_status
 	);
 	if ( ! $is_publishing_changeset ) {
 		return;
 	}
 
 	if ( empty( $wp_customize ) ) {
 		require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
 		$wp_customize = new WP_Customize_Manager(
 			array(
 				'changeset_uuid'     => $changeset_post->post_name,
 				'settings_previewed' => false,
 			)
 		);
 	}
 
 	if ( ! did_action( 'customize_register' ) ) {
 		/*
 		 * When running from CLI or Cron, the customize_register action will need
 		 * to be triggered in order for core, themes, and plugins to register their
 		 * settings. Normally core will add_action( 'customize_register' ) at
 		 * priority 10 to register the core settings, and if any themes/plugins
 		 * also add_action( 'customize_register' ) at the same priority, they
 		 * will have a $wp_customize with those settings registered since they
 		 * call add_action() afterward, normally. However, when manually doing
 		 * the customize_register action after the setup_theme, then the order
 		 * will be reversed for two actions added at priority 10, resulting in
 		 * the core settings no longer being available as expected to themes/plugins.
 		 * So the following manually calls the method that registers the core
 		 * settings up front before doing the action.
 		 */
 		remove_action( 'customize_register', array( $wp_customize, 'register_controls' ) );
 		$wp_customize->register_controls();
 
 		/** This filter is documented in /wp-includes/class-wp-customize-manager.php */
 		do_action( 'customize_register', $wp_customize );
 	}
 	$wp_customize->_publish_changeset_values( $changeset_post->ID );
 
 	/*
 	 * Trash the changeset post if revisions are not enabled. Unpublished
 	 * changesets by default get garbage collected due to the auto-draft status.
 	 * When a changeset post is published, however, it would no longer get cleaned
 	 * out. This is a problem when the changeset posts are never displayed anywhere,
 	 * since they would just be endlessly piling up. So here we use the revisions
 	 * feature to indicate whether or not a published changeset should get trashed
 	 * and thus garbage collected.
 	 */
 	if ( ! wp_revisions_enabled( $changeset_post ) ) {
 		$wp_customize->trash_changeset_post( $changeset_post->ID );
 	}
 }
 
 /**
  * Filters changeset post data upon insert to ensure post_name is intact.
  *
  * This is needed to prevent the post_name from being dropped when the post is
  * transitioned into pending status by a contributor.
  *
  * @since 4.7.0
  *
  * @see wp_insert_post()
  *
  * @param array $post_data          An array of slashed post data.
  * @param array $supplied_post_data An array of sanitized, but otherwise unmodified post data.
  * @return array Filtered data.
  */
 function _wp_customize_changeset_filter_insert_post_data( $post_data, $supplied_post_data ) {
 	if ( isset( $post_data['post_type'] ) && 'customize_changeset' === $post_data['post_type'] ) {
 
 		// Prevent post_name from being dropped, such as when contributor saves a changeset post as pending.
 		if ( empty( $post_data['post_name'] ) && ! empty( $supplied_post_data['post_name'] ) ) {
 			$post_data['post_name'] = $supplied_post_data['post_name'];
 		}
 	}
 	return $post_data;
 }
 
 /**
  * Adds settings for the customize-loader script.
  *
  * @since 3.4.0
  */
 function _wp_customize_loader_settings() {
 	$admin_origin = parse_url( admin_url() );
 	$home_origin  = parse_url( home_url() );
 	$cross_domain = ( strtolower( $admin_origin['host'] ) != strtolower( $home_origin['host'] ) );
 
 	$browser = array(
 		'mobile' => wp_is_mobile(),
 		'ios'    => wp_is_mobile() && preg_match( '/iPad|iPod|iPhone/', $_SERVER['HTTP_USER_AGENT'] ),
 	);
 
 	$settings = array(
 		'url'           => esc_url( admin_url( 'customize.php' ) ),
 		'isCrossDomain' => $cross_domain,
 		'browser'       => $browser,
 		'l10n'          => array(
 			'saveAlert'       => __( 'The changes you made will be lost if you navigate away from this page.' ),
 			'mainIframeTitle' => __( 'Customizer' ),
 		),
 	);
 
 	$script = 'var _wpCustomizeLoaderSettings = ' . wp_json_encode( $settings ) . ';';
 
 	$wp_scripts = wp_scripts();
 	$data       = $wp_scripts->get_data( 'customize-loader', 'data' );
 	if ( $data ) {
 		$script = "$data\n$script";
 	}
 
 	$wp_scripts->add_data( 'customize-loader', 'data', $script );
 }
 
 /**
  * Returns a URL to load the Customizer.
  *
  * @since 3.4.0
  *
  * @param string $stylesheet Optional. Theme to customize. Defaults to current theme.
  *                           The theme's stylesheet will be urlencoded if necessary.
  * @return string
  */
 function wp_customize_url( $stylesheet = '' ) {
 	$url = admin_url( 'customize.php' );
 	if ( $stylesheet ) {
 		$url .= '?theme=' . urlencode( $stylesheet );
 	}
 	return esc_url( $url );
 }
 
 /**
  * Prints a script to check whether or not the Customizer is supported,
  * and apply either the no-customize-support or customize-support class
  * to the body.
  *
  * This function MUST be called inside the body tag.
  *
  * Ideally, call this function immediately after the body tag is opened.
  * This prevents a flash of unstyled content.
  *
  * It is also recommended that you add the "no-customize-support" class
  * to the body tag by default.
  *
  * @since 3.4.0
  * @since 4.7.0 Support for IE8 and below is explicitly removed via conditional comments.
  * @since 5.5.0 IE8 and older are no longer supported.
  */
 function wp_customize_support_script() {
 	$admin_origin = parse_url( admin_url() );
 	$home_origin  = parse_url( home_url() );
 	$cross_domain = ( strtolower( $admin_origin['host'] ) != strtolower( $home_origin['host'] ) );
 	$type_attr    = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"';
 	?>
 	<script<?php echo $type_attr; ?>>
 		(function() {
 			var request, b = document.body, c = 'className', cs = 'customize-support', rcs = new RegExp('(^|\\s+)(no-)?'+cs+'(\\s+|$)');
 
 	<?php	if ( $cross_domain ) : ?>
 			request = (function(){ var xhr = new XMLHttpRequest(); return ('withCredentials' in xhr); })();
 	<?php	else : ?>
 			request = true;
 	<?php	endif; ?>
 
 			b[c] = b[c].replace( rcs, ' ' );
 			// The customizer requires postMessage and CORS (if the site is cross domain).
 			b[c] += ( window.postMessage && request ? ' ' : ' no-' ) + cs;
 		}());
 	</script>
 	<?php
 }
 
 /**
  * Whether the site is being previewed in the Customizer.
  *
  * @since 4.0.0
  *
  * @global WP_Customize_Manager $wp_customize Customizer instance.
  *
  * @return bool True if the site is being previewed in the Customizer, false otherwise.
  */
 function is_customize_preview() {
 	global $wp_customize;
 
 	return ( $wp_customize instanceof WP_Customize_Manager ) && $wp_customize->is_preview();
 }
 
 /**
  * Makes sure that auto-draft posts get their post_date bumped or status changed to draft to prevent premature garbage-collection.
  *
  * When a changeset is updated but remains an auto-draft, ensure the post_date
  * for the auto-draft posts remains the same so that it will be
  * garbage-collected at the same time by `wp_delete_auto_drafts()`. Otherwise,
  * if the changeset is updated to be a draft then update the posts
  * to have a far-future post_date so that they will never be garbage collected
  * unless the changeset post itself is deleted.
  *
  * When a changeset is updated to be a persistent draft or to be scheduled for
  * publishing, then transition any dependent auto-drafts to a draft status so
  * that they likewise will not be garbage-collected but also so that they can
  * be edited in the admin before publishing since there is not yet a post/page
  * editing flow in the Customizer. See #39752.
  *
  * @link https://core.trac.wordpress.org/ticket/39752
  *
  * @since 4.8.0
  * @access private
  * @see wp_delete_auto_drafts()
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
  * @param string   $new_status Transition to this post status.
  * @param string   $old_status Previous post status.
  * @param \WP_Post $post       Post data.
  */
 function _wp_keep_alive_customize_changeset_dependent_auto_drafts( $new_status, $old_status, $post ) {
 	global $wpdb;
 	unset( $old_status );
 
 	// Short-circuit if not a changeset or if the changeset was published.
 	if ( 'customize_changeset' !== $post->post_type || 'publish' === $new_status ) {
 		return;
 	}
 
 	$data = json_decode( $post->post_content, true );
 	if ( empty( $data['nav_menus_created_posts']['value'] ) ) {
 		return;
 	}
 
 	/*
 	 * Actually, in lieu of keeping alive, trash any customization drafts here if the changeset itself is
 	 * getting trashed. This is needed because when a changeset transitions to a draft, then any of the
 	 * dependent auto-draft post/page stubs will also get transitioned to customization drafts which
 	 * are then visible in the WP Admin. We cannot wait for the deletion of the changeset in which
 	 * _wp_delete_customize_changeset_dependent_auto_drafts() will be called, since they need to be
 	 * trashed to remove from visibility immediately.
 	 */
 	if ( 'trash' === $new_status ) {
 		foreach ( $data['nav_menus_created_posts']['value'] as $post_id ) {
 			if ( ! empty( $post_id ) && 'draft' === get_post_status( $post_id ) ) {
 				wp_trash_post( $post_id );
 			}
 		}
 		return;
 	}
 
 	$post_args = array();
 	if ( 'auto-draft' === $new_status ) {
 		/*
 		 * Keep the post date for the post matching the changeset
 		 * so that it will not be garbage-collected before the changeset.
 		 */
 		$post_args['post_date'] = $post->post_date; // Note wp_delete_auto_drafts() only looks at this date.
 	} else {
 		/*
 		 * Since the changeset no longer has an auto-draft (and it is not published)
 		 * it is now a persistent changeset, a long-lived draft, and so any
 		 * associated auto-draft posts should likewise transition into having a draft
 		 * status. These drafts will be treated differently than regular drafts in
 		 * that they will be tied to the given changeset. The publish meta box is
 		 * replaced with a notice about how the post is part of a set of customized changes
 		 * which will be published when the changeset is published.
 		 */
 		$post_args['post_status'] = 'draft';
 	}
 
 	foreach ( $data['nav_menus_created_posts']['value'] as $post_id ) {
 		if ( empty( $post_id ) || 'auto-draft' !== get_post_status( $post_id ) ) {
 			continue;
 		}
 		$wpdb->update(
 			$wpdb->posts,
 			$post_args,
 			array( 'ID' => $post_id )
 		);
 		clean_post_cache( $post_id );
 	}
 }
 
 /**
  * Creates the initial theme features when the 'setup_theme' action is fired.
  *
  * See {@see 'setup_theme'}.
  *
  * @since 5.5.0
  */
 function create_initial_theme_features() {
 	register_theme_feature(
 		'align-wide',
 		array(
 			'description'  => __( 'Whether theme opts in to wide alignment CSS class.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'automatic-feed-links',
 		array(
 			'description'  => __( 'Whether posts and comments RSS feed links are added to head.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'custom-background',
 		array(
 			'description'  => __( 'Custom background if defined by the theme.' ),
 			'type'         => 'object',
 			'show_in_rest' => array(
 				'schema' => array(
 					'properties' => array(
 						'default-image'      => array(
 							'type'   => 'string',
 							'format' => 'uri',
 						),
 						'default-preset'     => array(
 							'type' => 'string',
 							'enum' => array(
 								'default',
 								'fill',
 								'fit',
 								'repeat',
 								'custom',
 							),
 						),
 						'default-position-x' => array(
 							'type' => 'string',
 							'enum' => array(
 								'left',
 								'center',
 								'right',
 							),
 						),
 						'default-position-y' => array(
 							'type' => 'string',
 							'enum' => array(
 								'left',
 								'center',
 								'right',
 							),
 						),
 						'default-size'       => array(
 							'type' => 'string',
 							'enum' => array(
 								'auto',
 								'contain',
 								'cover',
 							),
 						),
 						'default-repeat'     => array(
 							'type' => 'string',
 							'enum' => array(
 								'repeat-x',
 								'repeat-y',
 								'repeat',
 								'no-repeat',
 							),
 						),
 						'default-attachment' => array(
 							'type' => 'string',
 							'enum' => array(
 								'scroll',
 								'fixed',
 							),
 						),
 						'default-color'      => array(
 							'type' => 'string',
 						),
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'custom-header',
 		array(
 			'description'  => __( 'Custom header if defined by the theme.' ),
 			'type'         => 'object',
 			'show_in_rest' => array(
 				'schema' => array(
 					'properties' => array(
 						'default-image'      => array(
 							'type'   => 'string',
 							'format' => 'uri',
 						),
 						'random-default'     => array(
 							'type' => 'boolean',
 						),
 						'width'              => array(
 							'type' => 'integer',
 						),
 						'height'             => array(
 							'type' => 'integer',
 						),
 						'flex-height'        => array(
 							'type' => 'boolean',
 						),
 						'flex-width'         => array(
 							'type' => 'boolean',
 						),
 						'default-text-color' => array(
 							'type' => 'string',
 						),
 						'header-text'        => array(
 							'type' => 'boolean',
 						),
 						'uploads'            => array(
 							'type' => 'boolean',
 						),
 						'video'              => array(
 							'type' => 'boolean',
 						),
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'custom-logo',
 		array(
 			'type'         => 'object',
 			'description'  => __( 'Custom logo if defined by the theme.' ),
 			'show_in_rest' => array(
 				'schema' => array(
 					'properties' => array(
 						'width'                => array(
 							'type' => 'integer',
 						),
 						'height'               => array(
 							'type' => 'integer',
 						),
 						'flex-width'           => array(
 							'type' => 'boolean',
 						),
 						'flex-height'          => array(
 							'type' => 'boolean',
 						),
 						'header-text'          => array(
 							'type'  => 'array',
 							'items' => array(
 								'type' => 'string',
 							),
 						),
 						'unlink-homepage-logo' => array(
 							'type' => 'boolean',
 						),
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'customize-selective-refresh-widgets',
 		array(
 			'description'  => __( 'Whether the theme enables Selective Refresh for Widgets being managed with the Customizer.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'dark-editor-style',
 		array(
 			'description'  => __( 'Whether theme opts in to the dark editor style UI.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'disable-custom-colors',
 		array(
 			'description'  => __( 'Whether the theme disables custom colors.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'disable-custom-font-sizes',
 		array(
 			'description'  => __( 'Whether the theme disables custom font sizes.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'disable-custom-gradients',
 		array(
 			'description'  => __( 'Whether the theme disables custom gradients.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'editor-color-palette',
 		array(
 			'type'         => 'array',
 			'description'  => __( 'Custom color palette if defined by the theme.' ),
 			'show_in_rest' => array(
 				'schema' => array(
 					'items' => array(
 						'type'       => 'object',
 						'properties' => array(
 							'name'  => array(
 								'type' => 'string',
 							),
 							'slug'  => array(
 								'type' => 'string',
 							),
 							'color' => array(
 								'type' => 'string',
 							),
 						),
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'editor-font-sizes',
 		array(
 			'type'         => 'array',
 			'description'  => __( 'Custom font sizes if defined by the theme.' ),
 			'show_in_rest' => array(
 				'schema' => array(
 					'items' => array(
 						'type'       => 'object',
 						'properties' => array(
 							'name' => array(
 								'type' => 'string',
 							),
 							'size' => array(
 								'type' => 'number',
 							),
 							'slug' => array(
 								'type' => 'string',
 							),
 						),
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'editor-gradient-presets',
 		array(
 			'type'         => 'array',
 			'description'  => __( 'Custom gradient presets if defined by the theme.' ),
 			'show_in_rest' => array(
 				'schema' => array(
 					'items' => array(
 						'type'       => 'object',
 						'properties' => array(
 							'name'     => array(
 								'type' => 'string',
 							),
 							'gradient' => array(
 								'type' => 'string',
 							),
 							'slug'     => array(
 								'type' => 'string',
 							),
 						),
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'editor-styles',
 		array(
 			'description'  => __( 'Whether theme opts in to the editor styles CSS wrapper.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'html5',
 		array(
 			'type'         => 'array',
 			'description'  => __( 'Allows use of HTML5 markup for search forms, comment forms, comment lists, gallery, and caption.' ),
 			'show_in_rest' => array(
 				'schema' => array(
 					'items' => array(
 						'type' => 'string',
 						'enum' => array(
 							'search-form',
 							'comment-form',
 							'comment-list',
 							'gallery',
 							'caption',
 							'script',
 							'style',
 						),
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'post-formats',
 		array(
 			'type'         => 'array',
 			'description'  => __( 'Post formats supported.' ),
 			'show_in_rest' => array(
 				'name'             => 'formats',
 				'schema'           => array(
 					'items'   => array(
 						'type' => 'string',
 						'enum' => get_post_format_slugs(),
 					),
 					'default' => array( 'standard' ),
 				),
 				'prepare_callback' => static function ( $formats ) {
 					$formats = is_array( $formats ) ? array_values( $formats[0] ) : array();
 					$formats = array_merge( array( 'standard' ), $formats );
 
 					return $formats;
 				},
 			),
 		)
 	);
 	register_theme_feature(
 		'post-thumbnails',
 		array(
 			'type'         => 'array',
 			'description'  => __( 'The post types that support thumbnails or true if all post types are supported.' ),
 			'show_in_rest' => array(
 				'type'   => array( 'boolean', 'array' ),
 				'schema' => array(
 					'items' => array(
 						'type' => 'string',
 					),
 				),
 			),
 		)
 	);
 	register_theme_feature(
 		'responsive-embeds',
 		array(
 			'description'  => __( 'Whether the theme supports responsive embedded content.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'title-tag',
 		array(
 			'description'  => __( 'Whether the theme can manage the document title tag.' ),
 			'show_in_rest' => true,
 		)
 	);
 	register_theme_feature(
 		'wp-block-styles',
 		array(
 			'description'  => __( 'Whether theme opts in to default WordPress block styles for viewing.' ),
 			'show_in_rest' => true,
 		)
 	);
 }