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Edit File : theme.php \| Size : 131.16 KB
<?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 string[] $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 active 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 ( (bool) $wp_theme->errors() !== $args['errors'] ) { unset( $themes[ $theme ] ); } } } return $themes; } /* * Gets a WP_Theme object for a theme. * * @since 3.4.0 * * @global string[] $wp_theme_directories * * @param string $stylesheet Optional. Directory name for the theme. Defaults to active 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 active 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 * @since 6.5.0 Makes use of global template variables. * * @global string $wp_stylesheet_path Path to current theme's stylesheet directory. * @global string $wp_template_path Path to current theme's template directory. * * @return bool True if a child theme is in use, false otherwise. / function is_child_theme() { global $wp_stylesheet_path, $wp_template_path; return $wp_stylesheet_path !== $wp_template_path; } /* * 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 the active theme. * * @since 1.5.0 * @since 6.4.0 Memoizes filter execution so that it only runs once for the current theme. * @since 6.4.2 Memoization removed. * * @return string Path to active 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 the active theme. * * @since 1.5.0 * * @param string $stylesheet_dir Absolute path to the active theme. * @param string $stylesheet Directory name of the active 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 the active theme. * * @since 1.5.0 * * @return string URI to active 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 the active 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 active 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 active theme stylesheet. * * @since 1.5.0 * * @param string $stylesheet_uri Stylesheet URI for the active theme/child theme. * @param string $stylesheet_dir_uri Stylesheet directory URI for the active 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 active 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 active theme. * * @since 1.5.0 * * @return string Template name. / function get_template() { /* * Filters the name of the active theme. * * @since 1.5.0 * * @param string $template active theme's directory name. / return apply_filters( 'template', get_option( 'template' ) ); } /* * Retrieves template directory path for the active theme. * * @since 1.5.0 * @since 6.4.0 Memoizes filter execution so that it only runs once for the current theme. * @since 6.4.1 Memoization removed. * * @return string Path to active theme's template directory. / function get_template_directory() { $template = get_template(); $theme_root = get_theme_root( $template ); $template_dir = "$theme_root/$template"; /* * Filters the active theme directory path. * * @since 1.5.0 * * @param string $template_dir The path of the active theme directory. * @param string $template Directory name of the active 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 the active theme. * * @since 1.5.0 * * @return string URI to active 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 active theme directory URI. * * @since 1.5.0 * * @param string $template_dir_uri The URI of the active theme directory. * @param string $template Directory name of the active 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 string[] $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 string[] $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 string[] $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 ( str_starts_with( $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 active theme directory. $dirs = @ scandir( $theme_root ); if ( ! $dirs ) { wp_trigger_error( __FUNCTION__, "$theme_root is not readable" ); 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 ( ! $sub_dirs ) { wp_trigger_error( __FUNCTION__, "$theme_root/$dir is not readable" ); 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 string[] $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 string[] $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 ( str_starts_with( $theme_root, WP_CONTENT_DIR ) ) { $theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) ); } elseif ( str_starts_with( $theme_root, ABSPATH ) ) { $theme_root_uri = site_url( str_replace( ABSPATH, '', $theme_root ) ); } elseif ( str_starts_with( $theme_root, WP_PLUGIN_DIR ) \|\| str_starts_with( $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 string[] $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 active 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 string[] $wp_theme_directories * @global WP_Customize_Manager $wp_customize * @global array $sidebars_widgets * @global array $wp_registered_sidebars * * @param string $stylesheet Stylesheet name. / function switch_theme( $stylesheet ) { global $wp_theme_directories, $wp_customize, $sidebars_widgets, $wp_registered_sidebars; $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, true ); 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' ); } } // Stores classic sidebars for later use by block themes. if ( $new_theme->is_block_theme() ) { set_theme_mod( 'wp_classic_sidebars', $wp_registered_sidebars ); } update_option( 'theme_switched', $old_theme->get_stylesheet() ); / * Reset template globals when switching themes outside of a switched blog * context to ensure templates will be loaded from the new theme. / if ( ! is_multisite() \|\| ! ms_is_switched() ) { wp_set_template_globals(); } // Clear pattern caches. if ( ! is_multisite() ) { $new_theme->delete_pattern_cache(); $old_theme->delete_pattern_cache(); } // Set autoload=no for the old theme, autoload=yes for the switched theme. $theme_mods_options = array( 'theme_mods_' . $stylesheet => 'yes', 'theme_mods_' . $old_theme->get_stylesheet() => 'no', ); wp_set_option_autoload_values( $theme_mods_options ); /* * Fires after the theme is switched. * * See {@see 'after_switch_theme'}. * * @since 1.5.0 * @since 4.5.0 Introduced the `$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 active theme has the required files. * * Standalone themes need to have a `templates/index.html` or `index.php` template file. * Child themes need to have a `Template` header in the `style.css` stylesheet. * * 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 active theme does not validate. * * You can use the {@see 'validate_current_theme'} filter to return false to disable * this functionality. * * @since 1.5.0 * @since 6.0.0 Removed the requirement for block themes to have an `index.php` template. * * @see WP_DEFAULT_THEME * * @return bool / function validate_current_theme() { /* * Filters whether to validate the active theme. * * @since 2.7.0 * * @param bool $validate Whether to validate the active theme. Default true. / if ( wp_installing() \|\| ! apply_filters( 'validate_current_theme', true ) ) { return true; } if ( ! file_exists( get_template_directory() . '/templates/index.html' ) && ! file_exists( get_template_directory() . '/block-templates/index.html' ) // Deprecated path support since 5.9.0. && ! 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 ); $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 * @since 5.9.0 The return value is always an array. * * @return array 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" ); } } if ( ! is_array( $mods ) ) { $mods = array(); } return $mods; } /* * Retrieves theme modification value for the active theme. * * If the modification name does not exist and `$default_value` is a string, then the * default will be passed through the {@link https://www.php.net/sprintf sprintf()} * PHP function with the template directory URI as the first value and the * stylesheet directory URI as the second value. * * @since 2.1.0 * * @param string $name Theme modification name. * @param mixed $default_value Optional. Theme modification default value. Default false. * @return mixed Theme modification value. / function get_theme_mod( $name, $default_value = 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 mixed $current_mod The value of the active theme modification. / return apply_filters( "theme_mod_{$name}", $mods[ $name ] ); } if ( is_string( $default_value ) ) { // Only run the replacement if an sprintf() string format pattern was found. if ( preg_match( '#(?<!%)%(?:\d+\$?)?s#', $default_value ) ) { // Remove a single trailing percent sign. $default_value = preg_replace( '#(?<!%)%$#', '', $default_value ); $default_value = sprintf( $default_value, get_template_directory_uri(), get_stylesheet_directory_uri() ); } } /* This filter is documented in wp-includes/theme.php / return apply_filters( "theme_mod_{$name}", $default_value ); } /* * Updates theme modification value for the active 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 mixed $value The new value of the theme modification. * @param mixed $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 active 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 the active 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(); } /* * Filters the header image URL. * * @since 6.1.0 * * @param string $url Header image URL. / $url = apply_filters( 'get_header_image', $url ); if ( ! is_string( $url ) ) { return false; } $url = trim( $url ); return sanitize_url( 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 ); $alt = ''; // Use alternative text assigned to the image, if available. Otherwise, leave it empty. if ( ! empty( $header->attachment_id ) ) { $image_alt = get_post_meta( $header->attachment_id, '_wp_attachment_image_alt', true ); if ( is_string( $image_alt ) ) { $alt = $image_alt; } } $attr = wp_parse_args( $attr, array( 'src' => $header->url, 'width' => $width, 'height' => $height, 'alt' => $alt, ) ); // 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 ); if ( ! empty( $attr['sizes'] ) ) { $sizes = $attr['sizes']; } else { $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_merge( $attr, wp_get_loading_optimization_attributes( 'img', $attr, 'get_header_image_tag' ) ); / * If the default value of `lazy` for the `loading` attribute is overridden * to omit the attribute for this image, ensure it is not included. / if ( isset( $attr['loading'] ) && ! $attr['loading'] ) { unset( $attr['loading'] ); } // If the `fetchpriority` attribute is overridden and set to false or an empty string. if ( isset( $attr['fetchpriority'] ) && ! $attr['fetchpriority'] ) { unset( $attr['fetchpriority'] ); } // If the `decoding` attribute is overridden and set to false or an empty string. if ( isset( $attr['decoding'] ) && ! $attr['decoding'] ) { unset( $attr['decoding'] ); } /* * Filters the list of header image attributes. * * @since 5.9.0 * * @param array $attr Array of the attributes for the image tag. * @param object $header The custom header object returned by 'get_custom_header()'. / $attr = apply_filters( 'get_header_image_tag_attributes', $attr, $header ); $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() { global $_wp_default_headers; static $_wp_random_header = null; if ( empty( $_wp_random_header ) ) { $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 \|\| ( empty( $header_image_mod ) && '' !== get_random_header_image() ) ) { return true; } } else { if ( "random-$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 active 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 = sanitize_url( 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 ); if ( isset( $header_data['attachment_parent'] ) ) { $header_images[ $header_index ]['attachment_parent'] = $header_data['attachment_parent']; } else { $header_images[ $header_index ]['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 sanitize_url( 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: ' . maybe_hash_hex_color( $color ) . ';' : ''; if ( $background ) { $image = ' background-image: url("' . sanitize_url( $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 // Note that esc_html() cannot be used because `div > span` is not interpreted properly. echo strip_tags( $styles ); ?> </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 active 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 active 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 element. * * @since 4.7.0 * * @param string $css CSS pulled in from the Custom CSS post type. * @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 Optional. Pre-processed CSS, stored in `post_content_filtered`. * Normally empty string. * @type string $stylesheet Optional. Stylesheet (child theme) to update. * Defaults to active 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. $revisions = wp_get_latest_revision_id_and_total_count( $r ); if ( ! is_wp_error( $revisions ) && 0 === $revisions['count'] ) { 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 active 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[] = sanitize_url( $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–Friday: 9:00AM–5:00PM', 'Theme starter content' ) . "\n", _x( 'Saturday & Sunday: 11:00AM–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 are 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, $config ); } /* * Registers theme support for a given feature. * * Must be called in the theme's functions.php file to work. * If attached to a hook, it must be {@see 'after_setup_theme'}. * The {@see 'init'} hook may be too late for some features. * * Example usage: * * add_theme_support( 'title-tag' ); * add_theme_support( 'custom-logo', array( * 'height' => 480, * 'width' => 720, * ) ); * * @since 2.9.0 * @since 3.4.0 The `custom-header-uploads` feature was deprecated. * @since 3.6.0 The `html5` feature was added. * @since 3.6.1 The `html5` feature requires an array of types to be passed. Defaults to * 'comment-list', 'comment-form', 'search-form' for backward compatibility. * @since 3.9.0 The `html5` feature now also accepts 'gallery' and 'caption'. * @since 4.1.0 The `title-tag` feature was added. * @since 4.5.0 The `customize-selective-refresh-widgets` feature was added. * @since 4.7.0 The `starter-content` feature was added. * @since 5.0.0 The `responsive-embeds`, `align-wide`, `dark-editor-style`, `disable-custom-colors`, * `disable-custom-font-sizes`, `editor-color-palette`, `editor-font-sizes`, * `editor-styles`, and `wp-block-styles` features were added. * @since 5.3.0 The `html5` feature now also accepts 'script' and 'style'. * @since 5.3.0 Formalized the existing and already documented `...$args` parameter * by adding it to the function signature. * @since 5.4.0 The `disable-custom-gradients` feature limits to default gradients or gradients added * through `editor-gradient-presets` theme support. * @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 as the second parameter. * @since 5.8.0 The `widgets-block-editor` feature enables the Widgets block editor. * @since 5.8.0 The `block-templates` feature indicates whether a theme uses block-based templates. * @since 6.0.0 The `html5` feature warns if no array is passed as the second parameter. * @since 6.1.0 The `block-template-parts` feature allows to edit any reusable template part from site editor. * @since 6.1.0 The `disable-layout-styles` feature disables the default layout styles. * @since 6.3.0 The `link-color` feature allows to enable the link color setting. * @since 6.3.0 The `border` feature allows themes without theme.json to add border styles to blocks. * @since 6.5.0 The `appearance-tools` feature enables a few design tools for blocks, * see `WP_Theme_JSON::APPEARANCE_TOOLS_OPT_INS` for a complete list. * @since 6.6.0 The `editor-spacing-sizes` feature was added. * * @global array $_wp_theme_features * * @param string $feature The feature being added. Likely core values include: * - 'admin-bar' * - 'align-wide' * - 'appearance-tools' * - 'automatic-feed-links' * - 'block-templates' * - 'block-template-parts' * - 'border' * - 'core-block-patterns' * - 'custom-background' * - 'custom-header' * - 'custom-line-height' * - 'custom-logo' * - 'customize-selective-refresh-widgets' * - 'custom-spacing' * - 'custom-units' * - 'dark-editor-style' * - 'disable-custom-colors' * - 'disable-custom-font-sizes' * - 'disable-custom-gradients' * - 'disable-layout-styles' * - 'editor-color-palette' * - 'editor-gradient-presets' * - 'editor-font-sizes' * - 'editor-spacing-sizes' * - 'editor-styles' * - 'featured-content' * - 'html5' * - 'link-color' * - 'menus' * - 'post-formats' * - 'post-thumbnails' * - 'responsive-embeds' * - 'starter-content' * - 'title-tag' * - 'widgets' * - 'widgets-block-editor' * - 'wp-block-styles' * @param mixed ...$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] ) \|\| ! is_array( $args[0] ) ) { _doing_it_wrong( "add_theme_support( 'html5' )", __( 'You need to pass an array of types.' ), '3.6.1' ); if ( ! empty( $args[0] ) && ! is_array( $args[0] ) ) { return false; } // Build an array of types for back-compat. $args = array( 0 => array( 'comment-list', 'comment-form', 'search-form' ) ); } // 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 should be avoided. 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 $classes; ?> { position: absolute; clip-path: inset(50%); } </style> <?php } } /* * Gets the theme support arguments passed when registering that support. * * Example usage: * * get_theme_support( 'custom-logo' ); * get_theme_support( 'custom-header', 'width' ); * * @since 3.1.0 * @since 5.3.0 Formalized the existing and already documented `...$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 active 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 to be performed. if ( ! $args ) { /* This filter is documented in wp-includes/theme.php / return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[ $feature ] ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores } 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][ $args[0] ] ); } /* * Filters whether the active theme supports a specific feature. * * The dynamic portion of the hook name, `$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 active 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 $file Path to the file. * @return bool True if the active theme supports the supplied feature, false otherwise. / function require_if_theme_supports( $feature, $file ) { if ( current_theme_supports( $feature ) ) { require $file; return true; } return false; } /* * Registers a theme feature for use in add_theme_support(). * * This does not indicate that the active 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 bool $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. * @since 6.6.0 Also removes `site_logo` option set by the site logo block. * * @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 = (int) get_theme_mod( 'custom_logo' ); $site_logo_id = (int) get_option( 'site_logo' ); if ( $custom_logo_id && $custom_logo_id === $id ) { remove_theme_mod( 'custom_logo' ); remove_theme_mod( 'header_text' ); } if ( $site_logo_id && $site_logo_id === $id ) { delete_option( 'site_logo' ); } 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 next WP load after the theme has been switched. * * The parameters differ according to whether the old theme exists or not. * If the old theme is missing, the old name will instead be the slug * of the old theme. * * See {@see 'switch_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 to 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 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; $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 active 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( $home_origin['host'] ) ); ob_start(); ?> <script> (function() { var request, b = document.body, c = 'className', cs = 'customize-support', rcs = new RegExp('(^\|\\s+)(no-)?'+cs+'(\\s+\|$)'); <?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 wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) ); } /* * 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 * @since 6.0.1 The `block-templates` feature was added. / 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( 'block-templates', array( 'description' => __( 'Whether a theme uses block-based templates.' ), 'show_in_rest' => true, ) ); register_theme_feature( 'block-template-parts', array( 'description' => __( 'Whether a theme uses block-based template parts.' ), '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( 'disable-layout-styles', array( 'description' => __( 'Whether the theme disables generated layout styles.' ), '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-spacing-sizes', array( 'type' => 'array', 'description' => __( 'Custom spacing 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' => '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, ) ); } /* * Returns whether the active theme is a block-based theme or not. * * @since 5.9.0 * * @return bool Whether the active theme is a block-based theme or not. / function wp_is_block_theme() { if ( empty( $GLOBALS['wp_theme_directories'] ) ) { _doing_it_wrong( __FUNCTION__, __( 'This function should not be called before the theme directory is registered.' ), '6.8.0' ); return false; } return wp_get_theme()->is_block_theme(); } /* * Given an element name, returns a class name. * * Alias of WP_Theme_JSON::get_element_class_name. * * @since 6.1.0 * * @param string $element The name of the element. * * @return string The name of the class. / function wp_theme_get_element_class_name( $element ) { return WP_Theme_JSON::get_element_class_name( $element ); } /* * Adds default theme supports for block themes when the 'after_setup_theme' action fires. * * See {@see 'after_setup_theme'}. * * @since 5.9.0 * @access private / function _add_default_theme_supports() { if ( ! wp_is_block_theme() ) { return; } add_theme_support( 'post-thumbnails' ); add_theme_support( 'responsive-embeds' ); add_theme_support( 'editor-styles' ); / * Makes block themes support HTML5 by default for the comment block and search form * (which use default template functions) and `[caption]` and `[gallery]` shortcodes. * Other blocks contain their own HTML5 markup. / add_theme_support( 'html5', array( 'comment-form', 'comment-list', 'search-form', 'gallery', 'caption', 'style', 'script' ) ); add_theme_support( 'automatic-feed-links' ); add_filter( 'should_load_separate_core_block_assets', '__return_true' ); add_filter( 'should_load_block_assets_on_demand', '__return_true' ); / * Remove the Customizer's Menus panel when block theme is active. */ add_filter( 'customize_panel_active', static function ( $active, WP_Customize_Panel $panel ) { if ( 'nav_menus' === $panel->id && ! current_theme_supports( 'menus' ) && ! current_theme_supports( 'widgets' ) ) { $active = false; } return $active; }, 10, 2 ); } Back

Edit File : theme.php | Size : 131.16 KB

<?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 string[] $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 active 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 ( (bool) $wp_theme->errors() !== $args['errors'] ) {
				unset( $themes[ $theme ] );
			}
		}
	}

return $themes;
}

/**
 * Gets a WP_Theme object for a theme.
 *
 * @since 3.4.0
 *
 * @global string[] $wp_theme_directories
 *
 * @param string $stylesheet Optional. Directory name for the theme. Defaults to active 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 active 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
 * @since 6.5.0 Makes use of global template variables.
 *
 * @global string $wp_stylesheet_path Path to current theme's stylesheet directory.
 * @global string $wp_template_path   Path to current theme's template directory.
 *
 * @return bool True if a child theme is in use, false otherwise.
 */
function is_child_theme() {
	global $wp_stylesheet_path, $wp_template_path;

return $wp_stylesheet_path !== $wp_template_path;
}

/**
 * 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 the active theme.
 *
 * @since 1.5.0
 * @since 6.4.0 Memoizes filter execution so that it only runs once for the current theme.
 * @since 6.4.2 Memoization removed.
 *
 * @return string Path to active 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 the active theme.
	 *
	 * @since 1.5.0
	 *
	 * @param string $stylesheet_dir Absolute path to the active theme.
	 * @param string $stylesheet     Directory name of the active 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 the active theme.
 *
 * @since 1.5.0
 *
 * @return string URI to active 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 the active 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 active 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 active theme stylesheet.
	 *
	 * @since 1.5.0
	 *
	 * @param string $stylesheet_uri     Stylesheet URI for the active theme/child theme.
	 * @param string $stylesheet_dir_uri Stylesheet directory URI for the active 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 active 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 active theme.
 *
 * @since 1.5.0
 *
 * @return string Template name.
 */
function get_template() {
	/**
	 * Filters the name of the active theme.
	 *
	 * @since 1.5.0
	 *
	 * @param string $template active theme's directory name.
	 */
	return apply_filters( 'template', get_option( 'template' ) );
}

/**
 * Retrieves template directory path for the active theme.
 *
 * @since 1.5.0
 * @since 6.4.0 Memoizes filter execution so that it only runs once for the current theme.
 * @since 6.4.1 Memoization removed.
 *
 * @return string Path to active theme's template directory.
 */
function get_template_directory() {
	$template     = get_template();
	$theme_root   = get_theme_root( $template );
	$template_dir = "$theme_root/$template";

/**
	 * Filters the active theme directory path.
	 *
	 * @since 1.5.0
	 *
	 * @param string $template_dir The path of the active theme directory.
	 * @param string $template     Directory name of the active 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 the active theme.
 *
 * @since 1.5.0
 *
 * @return string URI to active 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 active theme directory URI.
	 *
	 * @since 1.5.0
	 *
	 * @param string $template_dir_uri The URI of the active theme directory.
	 * @param string $template         Directory name of the active 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 string[] $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 string[] $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 string[] $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 ( str_starts_with( $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 active theme directory.
		$dirs = @ scandir( $theme_root );
		if ( ! $dirs ) {
			wp_trigger_error( __FUNCTION__, "$theme_root is not readable" );
			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 ( ! $sub_dirs ) {
					wp_trigger_error( __FUNCTION__, "$theme_root/$dir is not readable" );
					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 string[] $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 string[] $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 ( str_starts_with( $theme_root, WP_CONTENT_DIR ) ) {
				$theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) );
			} elseif ( str_starts_with( $theme_root, ABSPATH ) ) {
				$theme_root_uri = site_url( str_replace( ABSPATH, '', $theme_root ) );
			} elseif ( str_starts_with( $theme_root, WP_PLUGIN_DIR ) || str_starts_with( $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 string[] $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 active 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 string[]             $wp_theme_directories
 * @global WP_Customize_Manager $wp_customize
 * @global array                $sidebars_widgets
 * @global array                $wp_registered_sidebars
 *
 * @param string $stylesheet Stylesheet name.
 */
function switch_theme( $stylesheet ) {
	global $wp_theme_directories, $wp_customize, $sidebars_widgets, $wp_registered_sidebars;

$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, true );

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' );
		}
	}

// Stores classic sidebars for later use by block themes.
	if ( $new_theme->is_block_theme() ) {
		set_theme_mod( 'wp_classic_sidebars', $wp_registered_sidebars );
	}

update_option( 'theme_switched', $old_theme->get_stylesheet() );

/*
	 * Reset template globals when switching themes outside of a switched blog
	 * context to ensure templates will be loaded from the new theme.
	 */
	if ( ! is_multisite() || ! ms_is_switched() ) {
		wp_set_template_globals();
	}

// Clear pattern caches.
	if ( ! is_multisite() ) {
		$new_theme->delete_pattern_cache();
		$old_theme->delete_pattern_cache();
	}

// Set autoload=no for the old theme, autoload=yes for the switched theme.
	$theme_mods_options = array(
		'theme_mods_' . $stylesheet                  => 'yes',
		'theme_mods_' . $old_theme->get_stylesheet() => 'no',
	);
	wp_set_option_autoload_values( $theme_mods_options );

/**
	 * Fires after the theme is switched.
	 *
	 * See {@see 'after_switch_theme'}.
	 *
	 * @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 active theme has the required files.
 *
 * Standalone themes need to have a `templates/index.html` or `index.php` template file.
 * Child themes need to have a `Template` header in the `style.css` stylesheet.
 *
 * 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 active theme does not validate.
 *
 * You can use the {@see 'validate_current_theme'} filter to return false to disable
 * this functionality.
 *
 * @since 1.5.0
 * @since 6.0.0 Removed the requirement for block themes to have an `index.php` template.
 *
 * @see WP_DEFAULT_THEME
 *
 * @return bool
 */
function validate_current_theme() {
	/**
	 * Filters whether to validate the active theme.
	 *
	 * @since 2.7.0
	 *
	 * @param bool $validate Whether to validate the active theme. Default true.
	 */
	if ( wp_installing() || ! apply_filters( 'validate_current_theme', true ) ) {
		return true;
	}

if (
		! file_exists( get_template_directory() . '/templates/index.html' )
		&& ! file_exists( get_template_directory() . '/block-templates/index.html' ) // Deprecated path support since 5.9.0.
		&& ! 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 );

$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
 * @since 5.9.0 The return value is always an array.
 *
 * @return array 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" );
		}
	}

if ( ! is_array( $mods ) ) {
		$mods = array();
	}

return $mods;
}

/**
 * Retrieves theme modification value for the active theme.
 *
 * If the modification name does not exist and `$default_value` is a string, then the
 * default will be passed through the {@link https://www.php.net/sprintf sprintf()}
 * PHP function with the template directory URI as the first value and the
 * stylesheet directory URI as the second value.
 *
 * @since 2.1.0
 *
 * @param string $name          Theme modification name.
 * @param mixed  $default_value Optional. Theme modification default value. Default false.
 * @return mixed Theme modification value.
 */
function get_theme_mod( $name, $default_value = 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 mixed $current_mod The value of the active theme modification.
		 */
		return apply_filters( "theme_mod_{$name}", $mods[ $name ] );
	}

if ( is_string( $default_value ) ) {
		// Only run the replacement if an sprintf() string format pattern was found.
		if ( preg_match( '#(?<!%)%(?:\d+\$?)?s#', $default_value ) ) {
			// Remove a single trailing percent sign.
			$default_value = preg_replace( '#(?<!%)%$#', '', $default_value );
			$default_value = sprintf( $default_value, get_template_directory_uri(), get_stylesheet_directory_uri() );
		}
	}

/** This filter is documented in wp-includes/theme.php */
	return apply_filters( "theme_mod_{$name}", $default_value );
}

/**
 * Updates theme modification value for the active 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 mixed $value     The new value of the theme modification.
	 * @param mixed $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 active 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 the active 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();
	}

/**
	 * Filters the header image URL.
	 *
	 * @since 6.1.0
	 *
	 * @param string $url Header image URL.
	 */
	$url = apply_filters( 'get_header_image', $url );

if ( ! is_string( $url ) ) {
		return false;
	}

$url = trim( $url );
	return sanitize_url( 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 );
	$alt    = '';

// Use alternative text assigned to the image, if available. Otherwise, leave it empty.
	if ( ! empty( $header->attachment_id ) ) {
		$image_alt = get_post_meta( $header->attachment_id, '_wp_attachment_image_alt', true );

if ( is_string( $image_alt ) ) {
			$alt = $image_alt;
		}
	}

$attr = wp_parse_args(
		$attr,
		array(
			'src'    => $header->url,
			'width'  => $width,
			'height' => $height,
			'alt'    => $alt,
		)
	);

// 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 );

if ( ! empty( $attr['sizes'] ) ) {
				$sizes = $attr['sizes'];
			} else {
				$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_merge(
		$attr,
		wp_get_loading_optimization_attributes( 'img', $attr, 'get_header_image_tag' )
	);

/*
	 * If the default value of `lazy` for the `loading` attribute is overridden
	 * to omit the attribute for this image, ensure it is not included.
	 */
	if ( isset( $attr['loading'] ) && ! $attr['loading'] ) {
		unset( $attr['loading'] );
	}

// If the `fetchpriority` attribute is overridden and set to false or an empty string.
	if ( isset( $attr['fetchpriority'] ) && ! $attr['fetchpriority'] ) {
		unset( $attr['fetchpriority'] );
	}

// If the `decoding` attribute is overridden and set to false or an empty string.
	if ( isset( $attr['decoding'] ) && ! $attr['decoding'] ) {
		unset( $attr['decoding'] );
	}

/**
	 * Filters the list of header image attributes.
	 *
	 * @since 5.9.0
	 *
	 * @param array  $attr   Array of the attributes for the image tag.
	 * @param object $header The custom header object returned by 'get_custom_header()'.
	 */
	$attr = apply_filters( 'get_header_image_tag_attributes', $attr, $header );

$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() {
	global $_wp_default_headers;
	static $_wp_random_header = null;

if ( empty( $_wp_random_header ) ) {
		$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
			|| ( empty( $header_image_mod ) && '' !== get_random_header_image() )
		) {
			return true;
		}
	} else {
		if ( "random-$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 active 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          = sanitize_url( 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 );

if ( isset( $header_data['attachment_parent'] ) ) {
			$header_images[ $header_index ]['attachment_parent'] = $header_data['attachment_parent'];
		} else {
			$header_images[ $header_index ]['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 sanitize_url( 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: ' . maybe_hash_hex_color( $color ) . ';' : '';

if ( $background ) {
		$image = ' background-image: url("' . sanitize_url( $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
			// Note that esc_html() cannot be used because `div &gt; span` is not interpreted properly.
			echo strip_tags( $styles );
			?>
		</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 active 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 active 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 element.
	 *
	 * @since 4.7.0
	 *
	 * @param string $css        CSS pulled in from the Custom CSS post type.
	 * @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 Optional. Pre-processed CSS, stored in `post_content_filtered`.
 *                                Normally empty string.
 *     @type string $stylesheet   Optional. Stylesheet (child theme) to update.
 *                                Defaults to active 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.
			$revisions = wp_get_latest_revision_id_and_total_count( $r );
			if ( ! is_wp_error( $revisions ) && 0 === $revisions['count'] ) {
				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 active 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[] = sanitize_url( $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(
					"\n<p>%s</p>\n",
					_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(
					"\n<p>%s</p>\n",
					_x( 'You might be an artist who would like to introduce yourself and your work here or maybe you are 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(
					"\n<p>%s</p>\n",
					_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(
					"\n<p>%s</p>\n",
					_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 3.6.1 The `html5` feature requires an array of types to be passed. Defaults to
 *              'comment-list', 'comment-form', 'search-form' for backward compatibility.
 * @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 5.4.0 The `disable-custom-gradients` feature limits to default gradients or gradients added
 *              through `editor-gradient-presets` theme support.
 * @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 as the second parameter.
 * @since 5.8.0 The `widgets-block-editor` feature enables the Widgets block editor.
 * @since 5.8.0 The `block-templates` feature indicates whether a theme uses block-based templates.
 * @since 6.0.0 The `html5` feature warns if no array is passed as the second parameter.
 * @since 6.1.0 The `block-template-parts` feature allows to edit any reusable template part from site editor.
 * @since 6.1.0 The `disable-layout-styles` feature disables the default layout styles.
 * @since 6.3.0 The `link-color` feature allows to enable the link color setting.
 * @since 6.3.0 The `border` feature allows themes without theme.json to add border styles to blocks.
 * @since 6.5.0 The `appearance-tools` feature enables a few design tools for blocks,
 *              see `WP_Theme_JSON::APPEARANCE_TOOLS_OPT_INS` for a complete list.
 * @since 6.6.0 The `editor-spacing-sizes` feature was added.
 *
 * @global array $_wp_theme_features
 *
 * @param string $feature The feature being added. Likely core values include:
 *                          - 'admin-bar'
 *                          - 'align-wide'
 *                          - 'appearance-tools'
 *                          - 'automatic-feed-links'
 *                          - 'block-templates'
 *                          - 'block-template-parts'
 *                          - 'border'
 *                          - 'core-block-patterns'
 *                          - 'custom-background'
 *                          - 'custom-header'
 *                          - 'custom-line-height'
 *                          - 'custom-logo'
 *                          - 'customize-selective-refresh-widgets'
 *                          - 'custom-spacing'
 *                          - 'custom-units'
 *                          - 'dark-editor-style'
 *                          - 'disable-custom-colors'
 *                          - 'disable-custom-font-sizes'
 *                          - 'disable-custom-gradients'
 *                          - 'disable-layout-styles'
 *                          - 'editor-color-palette'
 *                          - 'editor-gradient-presets'
 *                          - 'editor-font-sizes'
 *                          - 'editor-spacing-sizes'
 *                          - 'editor-styles'
 *                          - 'featured-content'
 *                          - 'html5'
 *                          - 'link-color'
 *                          - 'menus'
 *                          - 'post-formats'
 *                          - 'post-thumbnails'
 *                          - 'responsive-embeds'
 *                          - 'starter-content'
 *                          - 'title-tag'
 *                          - 'widgets'
 *                          - 'widgets-block-editor'
 *                          - 'wp-block-styles'
 * @param mixed  ...$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] ) || ! is_array( $args[0] ) ) {
				_doing_it_wrong(
					"add_theme_support( 'html5' )",
					__( 'You need to pass an array of types.' ),
					'3.6.1'
				);

if ( ! empty( $args[0] ) && ! is_array( $args[0] ) ) {
					return false;
				}

// Build an array of types for back-compat.
				$args = array( 0 => array( 'comment-list', 'comment-form', 'search-form' ) );
			}

// 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 should be avoided. 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"';
		?>
		
		<style id="custom-logo-css"<?php echo $type_attr; ?>>
			<?php echo $classes; ?> {
				position: absolute;
				clip-path: inset(50%);
			}
		</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 active 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 to be performed.
	if ( ! $args ) {
		/** This filter is documented in wp-includes/theme.php */
		return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[ $feature ] ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
	}

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 active 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 active 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 $file    Path to the file.
 * @return bool True if the active theme supports the supplied feature, false otherwise.
 */
function require_if_theme_supports( $feature, $file ) {
	if ( current_theme_supports( $feature ) ) {
		require $file;
		return true;
	}
	return false;
}

/**
 * Registers a theme feature for use in add_theme_support().
 *
 * This does not indicate that the active 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 bool       $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.
 * @since 6.6.0 Also removes `site_logo` option set by the site logo block.
 *
 * @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   = (int) get_theme_mod( 'custom_logo' );
	$site_logo_id     = (int) get_option( 'site_logo' );

if ( $custom_logo_id && $custom_logo_id === $id ) {
		remove_theme_mod( 'custom_logo' );
		remove_theme_mod( 'header_text' );
	}

if ( $site_logo_id && $site_logo_id === $id ) {
		delete_option( 'site_logo' );
	}

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 next WP load after the theme has been switched.
			 *
			 * The parameters differ according to whether the old theme exists or not.
			 * If the old theme is missing, the old name will instead be the slug
			 * of the old theme.
			 *
			 * See {@see 'switch_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 to 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 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;

$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 active 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( $home_origin['host'] ) );
	ob_start();
	?>
	<script>
		(function() {
			var request, b = document.body, c = 'className', cs = 'customize-support', rcs = new RegExp('(^|\\s+)(no-)?'+cs+'(\\s+|$)');

<?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
	wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
}

/**
 * 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
 * @since 6.0.1 The `block-templates` feature was added.
 */
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(
		'block-templates',
		array(
			'description'  => __( 'Whether a theme uses block-based templates.' ),
			'show_in_rest' => true,
		)
	);
	register_theme_feature(
		'block-template-parts',
		array(
			'description'  => __( 'Whether a theme uses block-based template parts.' ),
			'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(
		'disable-layout-styles',
		array(
			'description'  => __( 'Whether the theme disables generated layout styles.' ),
			'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-spacing-sizes',
		array(
			'type'         => 'array',
			'description'  => __( 'Custom spacing 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' => '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,
		)
	);
}

/**
 * Returns whether the active theme is a block-based theme or not.
 *
 * @since 5.9.0
 *
 * @return bool Whether the active theme is a block-based theme or not.
 */
function wp_is_block_theme() {
	if ( empty( $GLOBALS['wp_theme_directories'] ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'This function should not be called before the theme directory is registered.' ), '6.8.0' );
		return false;
	}

return wp_get_theme()->is_block_theme();
}

/**
 * Given an element name, returns a class name.
 *
 * Alias of WP_Theme_JSON::get_element_class_name.
 *
 * @since 6.1.0
 *
 * @param string $element The name of the element.
 *
 * @return string The name of the class.
 */
function wp_theme_get_element_class_name( $element ) {
	return WP_Theme_JSON::get_element_class_name( $element );
}

/**
 * Adds default theme supports for block themes when the 'after_setup_theme' action fires.
 *
 * See {@see 'after_setup_theme'}.
 *
 * @since 5.9.0
 * @access private
 */
function _add_default_theme_supports() {
	if ( ! wp_is_block_theme() ) {
		return;
	}

add_theme_support( 'post-thumbnails' );
	add_theme_support( 'responsive-embeds' );
	add_theme_support( 'editor-styles' );
	/*
	 * Makes block themes support HTML5 by default for the comment block and search form
	 * (which use default template functions) and `[caption]` and `[gallery]` shortcodes.
	 * Other blocks contain their own HTML5 markup.
	 */
	add_theme_support( 'html5', array( 'comment-form', 'comment-list', 'search-form', 'gallery', 'caption', 'style', 'script' ) );
	add_theme_support( 'automatic-feed-links' );

add_filter( 'should_load_separate_core_block_assets', '__return_true' );
	add_filter( 'should_load_block_assets_on_demand', '__return_true' );

/*
	 * Remove the Customizer's Menus panel when block theme is active.
	 */
	add_filter(
		'customize_panel_active',
		static function ( $active, WP_Customize_Panel $panel ) {
			if (
				'nav_menus' === $panel->id &&
				! current_theme_supports( 'menus' ) &&
				! current_theme_supports( 'widgets' )
			) {
				$active = false;
			}
			return $active;
		},
		10,
		2
	);
}

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