diff -r 000000000000 -r d970ebf37754 wp/wp-includes/theme.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wp/wp-includes/theme.php Wed Nov 06 03:21:17 2013 +0000 @@ -0,0 +1,1753 @@ + false, 'allowed' => null, 'blog_id' => 0 ); + $args = wp_parse_args( $args, $defaults ); + + $theme_directories = search_theme_directories(); + + if ( count( $wp_theme_directories ) > 1 ) { + // Make sure the current theme wins out, in case search_theme_directories() picks the wrong + // one in the case of a conflict. (Normally, last registered theme root wins.) + $current_theme = get_stylesheet(); + if ( isset( $theme_directories[ $current_theme ] ) ) { + $root_of_current_theme = get_raw_theme_root( $current_theme ); + if ( ! in_array( $root_of_current_theme, $wp_theme_directories ) ) + $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 ] = $_themes[ $theme_root['theme_root'] . '/' . $theme ] = new WP_Theme( $theme, $theme_root['theme_root'] ); + } + + if ( null !== $args['errors'] ) { + foreach ( $themes as $theme => $wp_theme ) { + if ( $wp_theme->errors() != $args['errors'] ) + unset( $themes[ $theme ] ); + } + } + + return $themes; +} + +/** + * Gets a WP_Theme object for a theme. + * + * @since 3.4.0 + * + * @param string $stylesheet Directory name for the theme. Optional. Defaults to current theme. + * @param string $theme_root Absolute path of the theme root to look in. Optional. If not specified, get_raw_theme_root() + * is used to calculate the theme root for the $stylesheet provided (or current theme). + * @return WP_Theme Theme object. Be sure to check the object's exists() method if you need to confirm the theme's existence. + */ +function wp_get_theme( $stylesheet = null, $theme_root = null ) { + 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 ) ) + $theme_root = WP_CONTENT_DIR . $theme_root; + } + + return new WP_Theme( $stylesheet, $theme_root ); +} + +/** + * Clears the cache held by get_theme_roots() and WP_Theme. + * + * @since 3.5.0 + * @param bool $clear_update_cache Whether to clear the Theme updates cache + */ +function wp_clean_themes_cache( $clear_update_cache = true ) { + if ( $clear_update_cache ) + delete_site_transient( 'update_themes' ); + search_theme_directories( true ); + foreach ( wp_get_themes( array( 'errors' => null ) ) as $theme ) + $theme->cache_delete(); +} + +/** + * Whether a child theme is in use. + * + * @since 3.0.0 + * + * @return bool true if a child theme is in use, false otherwise. + **/ +function is_child_theme() { + return ( TEMPLATEPATH !== STYLESHEETPATH ); +} + +/** + * Retrieve name of the current stylesheet. + * + * The theme name that the administrator has currently set the front end theme + * as. + * + * For all extensive purposes, the template name and the stylesheet name are + * going to be the same for most cases. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'stylesheet' filter on stylesheet name. + * + * @return string Stylesheet name. + */ +function get_stylesheet() { + return apply_filters('stylesheet', get_option('stylesheet')); +} + +/** + * Retrieve stylesheet directory path for current theme. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'stylesheet_directory' filter on stylesheet directory and theme name. + * + * @return string Path to current theme directory. + */ +function get_stylesheet_directory() { + $stylesheet = get_stylesheet(); + $theme_root = get_theme_root( $stylesheet ); + $stylesheet_dir = "$theme_root/$stylesheet"; + + return apply_filters( 'stylesheet_directory', $stylesheet_dir, $stylesheet, $theme_root ); +} + +/** + * Retrieve stylesheet directory URI. + * + * @since 1.5.0 + * + * @return string + */ +function get_stylesheet_directory_uri() { + $stylesheet = get_stylesheet(); + $theme_root_uri = get_theme_root_uri( $stylesheet ); + $stylesheet_dir_uri = "$theme_root_uri/$stylesheet"; + + return apply_filters( 'stylesheet_directory_uri', $stylesheet_dir_uri, $stylesheet, $theme_root_uri ); +} + +/** + * Retrieve URI of current theme stylesheet. + * + * The stylesheet file name is 'style.css' which is appended to {@link + * get_stylesheet_directory_uri() stylesheet directory URI} path. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'stylesheet_uri' filter on stylesheet URI path and stylesheet directory URI. + * + * @return string + */ +function get_stylesheet_uri() { + $stylesheet_dir_uri = get_stylesheet_directory_uri(); + $stylesheet_uri = $stylesheet_dir_uri . '/style.css'; + return apply_filters('stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri); +} + +/** + * Retrieve 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 'stylesheet_directory_uri' filter or the 'locale_stylesheet_uri' filter. + * 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 + * @uses apply_filters() Calls 'locale_stylesheet_uri' filter on stylesheet URI path and stylesheet directory URI. + * + * @return string + */ +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 = ''; + return apply_filters('locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri); +} + +/** + * Retrieve name of the current theme. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'template' filter on template option. + * + * @return string Template name. + */ +function get_template() { + return apply_filters('template', get_option('template')); +} + +/** + * Retrieve current theme directory. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'template_directory' filter on template directory path and template name. + * + * @return string Template directory path. + */ +function get_template_directory() { + $template = get_template(); + $theme_root = get_theme_root( $template ); + $template_dir = "$theme_root/$template"; + + return apply_filters( 'template_directory', $template_dir, $template, $theme_root ); +} + +/** + * Retrieve theme directory URI. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'template_directory_uri' filter on template directory URI path and template name. + * + * @return string Template directory URI. + */ +function get_template_directory_uri() { + $template = get_template(); + $theme_root_uri = get_theme_root_uri( $template ); + $template_dir_uri = "$theme_root_uri/$template"; + + return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri ); +} + +/** + * Retrieve theme roots. + * + * @since 2.9.0 + * + * @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 $wp_theme_directories; + + if ( count($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; +} + +/** + * Register a directory that contains themes. + * + * @since 2.9.0 + * + * @param string $directory Either the full filesystem path to a theme folder or a folder within WP_CONTENT_DIR + * @return bool + */ +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; + } + + $wp_theme_directories[] = $directory; + + return true; +} + +/** + * Search all registered theme directories for complete and valid themes. + * + * @since 2.9.0 + * + * @param bool $force Optional. Whether to force a new directory scan. Defaults to false. + * @return array Valid themes found + */ +function search_theme_directories( $force = false ) { + global $wp_theme_directories; + if ( empty( $wp_theme_directories ) ) + return false; + + static $found_themes; + if ( ! $force && isset( $found_themes ) ) + return $found_themes; + + $found_themes = array(); + + $wp_theme_directories = (array) $wp_theme_directories; + + // Set up maybe-relative, maybe-absolute array of theme directories. + // We always want to return absolute, but we need to cache relative + // to use in get_theme_root(). + foreach ( $wp_theme_directories as $theme_root ) { + if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) ) + $relative_theme_roots[ str_replace( WP_CONTENT_DIR, '', $theme_root ) ] = $theme_root; + else + $relative_theme_roots[ $theme_root ] = $theme_root; + } + + if ( $cache_expiration = apply_filters( 'wp_cache_themes_persistently', false, 'search_theme_directories' ) ) { + $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 = 1800; // half hour + } else { + $cache_expiration = 1800; // half hour + } + + /* Loop the registered theme directories and extract all themes */ + foreach ( $wp_theme_directories as $theme_root ) { + + // Start with directories in the root of the current theme directory. + $dirs = @ scandir( $theme_root ); + if ( ! $dirs ) { + trigger_error( "$theme_root is not readable", E_USER_NOTICE ); + continue; + } + foreach ( $dirs as $dir ) { + if ( ! is_dir( $theme_root . '/' . $dir ) || $dir[0] == '.' || $dir == 'CVS' ) + continue; + if ( file_exists( $theme_root . '/' . $dir . '/style.css' ) ) { + // wp-content/themes/a-single-theme + // wp-content/themes is $theme_root, a-single-theme is $dir + $found_themes[ $dir ] = array( + 'theme_file' => $dir . '/style.css', + 'theme_root' => $theme_root, + ); + } else { + $found_theme = false; + // wp-content/themes/a-folder-of-themes/* + // wp-content/themes is $theme_root, a-folder-of-themes is $dir, then themes are $sub_dirs + $sub_dirs = @ scandir( $theme_root . '/' . $dir ); + if ( ! $sub_dirs ) { + trigger_error( "$theme_root/$dir is not readable", E_USER_NOTICE ); + continue; + } + foreach ( $sub_dirs as $sub_dir ) { + if ( ! is_dir( $theme_root . '/' . $dir . '/' . $sub_dir ) || $dir[0] == '.' || $dir == 'CVS' ) + 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 ( $theme_roots != get_site_transient( 'theme_roots' ) ) + set_site_transient( 'theme_roots', $theme_roots, $cache_expiration ); + + return $found_themes; +} + +/** + * Retrieve path to themes directory. + * + * Does not have trailing slash. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'theme_root' filter on path. + * + * @param string $stylesheet_or_template The stylesheet or template name of the theme + * @return string Theme path. + */ +function get_theme_root( $stylesheet_or_template = false ) { + global $wp_theme_directories; + + if ( $stylesheet_or_template && $theme_root = get_raw_theme_root( $stylesheet_or_template ) ) { + // 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 ) ) + $theme_root = WP_CONTENT_DIR . $theme_root; + } else { + $theme_root = WP_CONTENT_DIR . '/themes'; + } + + return apply_filters( 'theme_root', $theme_root ); +} + +/** + * Retrieve URI for themes directory. + * + * Does not have trailing slash. + * + * @since 1.5.0 + * + * @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. + * @return string Themes URI. + */ +function get_theme_root_uri( $stylesheet_or_template = false, $theme_root = false ) { + 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 ) ) { + // Absolute path. Make an educated guess. YMMV -- but note the filter below. + if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) ) + $theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) ); + elseif ( 0 === strpos( $theme_root, ABSPATH ) ) + $theme_root_uri = site_url( str_replace( ABSPATH, '', $theme_root ) ); + elseif ( 0 === strpos( $theme_root, WP_PLUGIN_DIR ) || 0 === strpos( $theme_root, WPMU_PLUGIN_DIR ) ) + $theme_root_uri = plugins_url( basename( $theme_root ), $theme_root ); + else + $theme_root_uri = $theme_root; + } else { + $theme_root_uri = content_url( $theme_root ); + } + } else { + $theme_root_uri = content_url( 'themes' ); + } + + return apply_filters( 'theme_root_uri', $theme_root_uri, get_option('siteurl'), $stylesheet_or_template ); +} + +/** + * Get the raw theme root relative to the content directory with no filters applied. + * + * @since 3.1.0 + * + * @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 $wp_theme_directories; + + if ( count($wp_theme_directories) <= 1 ) + return '/themes'; + + $theme_root = false; + + // If requesting the root for the current theme, consult options to avoid calling get_theme_roots() + if ( ! $skip_cache ) { + if ( get_option('stylesheet') == $stylesheet_or_template ) + $theme_root = get_option('stylesheet_root'); + elseif ( get_option('template') == $stylesheet_or_template ) + $theme_root = get_option('template_root'); + } + + if ( empty($theme_root) ) { + $theme_roots = get_theme_roots(); + if ( !empty($theme_roots[$stylesheet_or_template]) ) + $theme_root = $theme_roots[$stylesheet_or_template]; + } + + return $theme_root; +} + +/** + * Display localized stylesheet link element. + * + * @since 2.1.0 + */ +function locale_stylesheet() { + $stylesheet = get_locale_stylesheet_uri(); + if ( empty($stylesheet) ) + return; + echo ''; +} + +/** + * Start preview theme output buffer. + * + * Will only perform task if the user has permissions and template and preview + * query variables exist. + * + * @since 2.6.0 + */ +function preview_theme() { + if ( ! (isset($_GET['template']) && isset($_GET['preview'])) ) + return; + + if ( !current_user_can( 'switch_themes' ) ) + return; + + // Admin Thickbox requests + if ( isset( $_GET['preview_iframe'] ) ) + show_admin_bar( false ); + + $_GET['template'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['template']); + + if ( validate_file($_GET['template']) ) + return; + + add_filter( 'template', '_preview_theme_template_filter' ); + + if ( isset($_GET['stylesheet']) ) { + $_GET['stylesheet'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['stylesheet']); + if ( validate_file($_GET['stylesheet']) ) + return; + add_filter( 'stylesheet', '_preview_theme_stylesheet_filter' ); + } + + // Prevent theme mods to current theme being used on theme being previewed + add_filter( 'pre_option_theme_mods_' . get_option( 'stylesheet' ), '__return_empty_array' ); + + ob_start( 'preview_theme_ob_filter' ); +} +add_action('setup_theme', 'preview_theme'); + +/** + * Private function to modify the current template when previewing a theme + * + * @since 2.9.0 + * @access private + * + * @return string + */ +function _preview_theme_template_filter() { + return isset($_GET['template']) ? $_GET['template'] : ''; +} + +/** + * Private function to modify the current stylesheet when previewing a theme + * + * @since 2.9.0 + * @access private + * + * @return string + */ +function _preview_theme_stylesheet_filter() { + return isset($_GET['stylesheet']) ? $_GET['stylesheet'] : ''; +} + +/** + * Callback function for ob_start() to capture all links in the theme. + * + * @since 2.6.0 + * @access private + * + * @param string $content + * @return string + */ +function preview_theme_ob_filter( $content ) { + return preg_replace_callback( "|()|", 'preview_theme_ob_filter_callback', $content ); +} + +/** + * Manipulates preview theme links in order to control and maintain location. + * + * Callback function for preg_replace_callback() to accept and filter matches. + * + * @since 2.6.0 + * @access private + * + * @param array $matches + * @return string + */ +function preview_theme_ob_filter_callback( $matches ) { + if ( strpos($matches[4], 'onclick') !== false ) + $matches[4] = preg_replace('#onclick=([\'"]).*?(?. (? 1, 'template' => $template, 'stylesheet' => $stylesheet, 'preview_iframe' => 1 ), $matches[3] ); + if ( 0 === strpos($link, 'preview=1') ) + $link = "?$link"; + return $matches[1] . esc_attr( $link ) . $matches[4]; +} + +/** + * 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 backwards compatibility. + * + * @since 2.5.0 + * @uses do_action() Calls 'switch_theme' action, passing the new theme. + * + * @param string $stylesheet Stylesheet name + */ +function switch_theme( $stylesheet ) { + global $wp_theme_directories, $sidebars_widgets; + + if ( is_array( $sidebars_widgets ) ) + set_theme_mod( 'sidebars_widgets', array( 'time' => time(), 'data' => $sidebars_widgets ) ); + + $old_theme = wp_get_theme(); + $new_theme = wp_get_theme( $stylesheet ); + + if ( func_num_args() > 1 ) { + $template = $stylesheet; + $stylesheet = func_get_arg( 1 ); + } else { + $template = $new_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 ); + + if ( is_admin() && false === get_option( 'theme_mods_' . $stylesheet ) ) { + $default_theme_mods = (array) get_option( 'mods_' . $new_name ); + add_option( "theme_mods_$stylesheet", $default_theme_mods ); + } + + update_option( 'theme_switched', $old_theme->get_stylesheet() ); + do_action( 'switch_theme', $new_name, $new_theme ); +} + +/** + * Checks that current theme files 'index.php' and 'style.css' exists. + * + * Does not check the default theme, which is the fallback and should always exist. + * Will switch theme to the fallback theme if current theme does not validate. + * You can use the 'validate_current_theme' filter to return false to + * disable this functionality. + * + * @since 1.5.0 + * @see WP_DEFAULT_THEME + * + * @return bool + */ +function validate_current_theme() { + // Don't validate during an install/upgrade. + if ( defined('WP_INSTALLING') || !apply_filters( 'validate_current_theme', true ) ) + return true; + + if ( get_template() != WP_DEFAULT_THEME && !file_exists(get_template_directory() . '/index.php') ) { + switch_theme( WP_DEFAULT_THEME ); + return false; + } + + if ( get_stylesheet() != WP_DEFAULT_THEME && !file_exists(get_template_directory() . '/style.css') ) { + switch_theme( WP_DEFAULT_THEME ); + return false; + } + + if ( is_child_theme() && ! file_exists( get_stylesheet_directory() . '/style.css' ) ) { + switch_theme( WP_DEFAULT_THEME ); + return false; + } + + return true; +} + +/** + * Retrieve all theme modifications. + * + * @since 3.1.0 + * + * @return array Theme modifications. + */ +function get_theme_mods() { + $theme_slug = get_option( 'stylesheet' ); + if ( false === ( $mods = get_option( "theme_mods_$theme_slug" ) ) ) { + $theme_name = get_option( 'current_theme' ); + if ( false === $theme_name ) + $theme_name = wp_get_theme()->get('Name'); + $mods = get_option( "mods_$theme_name" ); // Deprecated location. + if ( is_admin() && false !== $mods ) { + update_option( "theme_mods_$theme_slug", $mods ); + delete_option( "mods_$theme_name" ); + } + } + return $mods; +} + +/** + * Retrieve theme modification value for the current theme. + * + * If the modification name does not exist, then the $default will be passed + * through {@link http://php.net/sprintf sprintf()} PHP function with the first + * string the template directory URI and the second string the stylesheet + * directory URI. + * + * @since 2.1.0 + * @uses apply_filters() Calls 'theme_mod_$name' filter on the value. + * + * @param string $name Theme modification name. + * @param bool|string $default + * @return string + */ +function get_theme_mod( $name, $default = false ) { + $mods = get_theme_mods(); + + if ( isset( $mods[ $name ] ) ) + return apply_filters( "theme_mod_$name", $mods[ $name ] ); + + if ( is_string( $default ) ) + $default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() ); + + return apply_filters( "theme_mod_$name", $default ); +} + +/** + * Update theme modification value for the current theme. + * + * @since 2.1.0 + * + * @param string $name Theme modification name. + * @param string $value theme modification value. + */ +function set_theme_mod( $name, $value ) { + $mods = get_theme_mods(); + + $mods[ $name ] = $value; + + $theme = get_option( 'stylesheet' ); + update_option( "theme_mods_$theme", $mods ); +} + +/** + * Remove theme modification name from current theme list. + * + * If removing the name also removes all elements, then the entire option will + * be removed. + * + * @since 2.1.0 + * + * @param string $name Theme modification name. + * @return null + */ +function remove_theme_mod( $name ) { + $mods = get_theme_mods(); + + if ( ! isset( $mods[ $name ] ) ) + return; + + unset( $mods[ $name ] ); + + if ( empty( $mods ) ) + return remove_theme_mods(); + + $theme = get_option( 'stylesheet' ); + update_option( "theme_mods_$theme", $mods ); +} + +/** + * Remove theme modifications option for current theme. + * + * @since 2.1.0 + */ +function remove_theme_mods() { + delete_option( 'theme_mods_' . get_option( 'stylesheet' ) ); + + // Old style. + $theme_name = get_option( 'current_theme' ); + if ( false === $theme_name ) + $theme_name = wp_get_theme()->get('Name'); + delete_option( 'mods_' . $theme_name ); +} + +/** + * Retrieve text color for custom header. + * + * @since 2.1.0 + * + * @return string + */ +function get_header_textcolor() { + return get_theme_mod('header_textcolor', get_theme_support( 'custom-header', 'default-text-color' ) ); +} + +/** + * Display text color for custom header. + * + * @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; +} + +/** + * Retrieve header image for custom header. + * + * @since 2.1.0 + * + * @return string + */ +function get_header_image() { + $url = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) ); + + if ( 'remove-header' == $url ) + return false; + + if ( is_random_header_image() ) + $url = get_random_header_image(); + + return esc_url_raw( set_url_scheme( $url ) ); +} + +/** + * Get random header image data from registered images in theme. + * + * @since 3.4.0 + * + * @access private + * + * @return string Path to header image + */ + +function _get_random_header_data() { + static $_wp_random_header; + + if ( empty( $_wp_random_header ) ) { + global $_wp_default_headers; + $header_image_mod = get_theme_mod( 'header_image', '' ); + $headers = array(); + + if ( 'random-uploaded-image' == $header_image_mod ) + $headers = get_uploaded_header_images(); + elseif ( ! empty( $_wp_default_headers ) ) { + if ( 'random-default-image' == $header_image_mod ) { + $headers = $_wp_default_headers; + } else { + if ( current_theme_supports( 'custom-header', 'random-default' ) ) + $headers = $_wp_default_headers; + } + } + + if ( empty( $headers ) ) + return new stdClass; + + $_wp_random_header = (object) $headers[ array_rand( $headers ) ]; + + $_wp_random_header->url = sprintf( $_wp_random_header->url, get_template_directory_uri(), get_stylesheet_directory_uri() ); + $_wp_random_header->thumbnail_url = sprintf( $_wp_random_header->thumbnail_url, get_template_directory_uri(), get_stylesheet_directory_uri() ); + } + return $_wp_random_header; +} + +/** + * Get 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; +} + +/** + * Check 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. any|default|uploaded + * @return boolean + */ +function is_random_header_image( $type = 'any' ) { + $header_image_mod = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) ); + + if ( 'any' == $type ) { + if ( 'random-default-image' == $header_image_mod || 'random-uploaded-image' == $header_image_mod || ( '' != get_random_header_image() && empty( $header_image_mod ) ) ) + return true; + } else { + if ( "random-$type-image" == $header_image_mod ) + return true; + elseif ( 'default' == $type && empty( $header_image_mod ) && '' != get_random_header_image() ) + return true; + } + + return false; +} + +/** + * Display header image URL. + * + * @since 2.1.0 + */ +function header_image() { + echo esc_url( get_header_image() ); +} + +/** + * Get the header images uploaded for the current theme. + * + * @since 3.2.0 + * + * @return array + */ +function get_uploaded_header_images() { + $header_images = array(); + + // @todo caching + $headers = get_posts( array( 'post_type' => 'attachment', 'meta_key' => '_wp_attachment_is_custom_header', 'meta_value' => get_option('stylesheet'), 'orderby' => 'none', 'nopaging' => true ) ); + + if ( empty( $headers ) ) + return array(); + + foreach ( (array) $headers as $header ) { + $url = esc_url_raw( $header->guid ); + $header_data = wp_get_attachment_metadata( $header->ID ); + $header_index = basename($url); + $header_images[$header_index] = array(); + $header_images[$header_index]['attachment_id'] = $header->ID; + $header_images[$header_index]['url'] = $url; + $header_images[$header_index]['thumbnail_url'] = $url; + 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; +} + +/** + * Get the header image data. + * + * @since 3.4.0 + * + * @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'] = $data['thumbnail_url'] = vsprintf( get_theme_support( 'custom-header', 'default-image' ), $directory_args ); + 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' ), + ); + return (object) wp_parse_args( $data, $default ); +} + +/** + * Register a selection of default headers to be displayed by the custom header admin UI. + * + * @since 3.0.0 + * + * @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 ); +} + +/** + * Unregister 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 + * + * @param string|array $header The header string id (key of array) to remove, or an array thereof. + * @return True on success, false on failure. + */ +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; + } +} + +/** + * Retrieve 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' ) ); +} + +/** + * Display background image path. + * + * @since 3.0.0 + */ +function background_image() { + echo get_background_image(); +} + +/** + * Retrieve 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' ) ); +} + +/** + * Display background color value. + * + * @since 3.0.0 + */ +function background_color() { + echo get_background_color(); +} + +/** + * Default custom background callback. + * + * @since 3.0.0 + * @access protected + */ +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_theme_mod( 'background_color' ); + + if ( ! $background && ! $color ) + return; + + $style = $color ? "background-color: #$color;" : ''; + + if ( $background ) { + $image = " background-image: url('$background');"; + + $repeat = get_theme_mod( 'background_repeat', 'repeat' ); + if ( ! in_array( $repeat, array( 'no-repeat', 'repeat-x', 'repeat-y', 'repeat' ) ) ) + $repeat = 'repeat'; + $repeat = " background-repeat: $repeat;"; + + $position = get_theme_mod( 'background_position_x', 'left' ); + if ( ! in_array( $position, array( 'center', 'right', 'left' ) ) ) + $position = 'left'; + $position = " background-position: top $position;"; + + $attachment = get_theme_mod( 'background_attachment', 'scroll' ); + if ( ! in_array( $attachment, array( 'fixed', 'scroll' ) ) ) + $attachment = 'scroll'; + $attachment = " background-attachment: $attachment;"; + + $style .= $image . $repeat . $position . $attachment; + } +?> + + array( 'comment-list', 'comment-form', 'search-form' ) ); + } elseif ( ! is_array( $args[0] ) ) { + _doing_it_wrong( "add_theme_support( 'html5' )", 'You need to pass an array of types.', '3.6.1' ); + return false; + } + + // Calling 'html5' again merges, rather than overwrites. + if ( isset( $_wp_theme_features['html5'] ) ) + $args[0] = array_merge( $_wp_theme_features['html5'][0], $args[0] ); + break; + + case 'custom-header-uploads' : + return add_theme_support( 'custom-header', array( 'uploads' => true ) ); + break; + + case 'custom-header' : + if ( ! is_array( $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' => '', + ); + + $jit = isset( $args[0]['__jit'] ); + unset( $args[0]['__jit'] ); + + // Merge in data from previous add_theme_support() calls. + // The first value registered wins. (A child theme is set up first.) + if ( isset( $_wp_theme_features['custom-header'] ) ) + $args[0] = wp_parse_args( $_wp_theme_features['custom-header'][0], $args[0] ); + + // Load in the defaults at the end, as we need to insure first one wins. + // This will cause all constants to be defined, as each arg will then be set to the default. + if ( $jit ) + $args[0] = wp_parse_args( $args[0], $defaults ); + + // If a constant was defined, use that value. Otherwise, define the constant to ensure + // the constant is always accurate (and is not defined later, overriding our value). + // As stated above, the first value wins. + // Once we get to wp_loaded (just-in-time), define any constants we haven't already. + // Constants are lame. Don't reference them. This is just for backwards 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 ( ! is_array( $args ) ) + $args = array( 0 => array() ); + + $defaults = array( + 'default-image' => '', + '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; + } + + $_wp_theme_features[ $feature ] = $args; +} + +/** + * Registers the internal custom header and background routines. + * + * @since 3.4.0 + * @access private + */ +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/custom-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/custom-background.php' ); + $custom_background = new Custom_Background( $args[0]['admin-head-callback'], $args[0]['admin-preview-callback'] ); + } + } +} +add_action( 'wp_loaded', '_custom_header_background_just_in_time' ); + +/** + * Gets the theme support arguments passed when registering that support + * + * @since 3.1 + * @param string $feature the feature to check + * @return array The array of extra arguments + */ +function get_theme_support( $feature ) { + global $_wp_theme_features; + if ( ! isset( $_wp_theme_features[ $feature ] ) ) + return false; + + if ( func_num_args() <= 1 ) + return $_wp_theme_features[ $feature ]; + + $args = array_slice( func_get_args(), 1 ); + switch ( $feature ) { + 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; + break; + default : + return $_wp_theme_features[ $feature ]; + break; + } +} + +/** + * 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 added + * @return bool Whether feature was removed. + */ +function remove_theme_support( $feature ) { + // Blacklist: for internal registrations not used directly by themes. + if ( in_array( $feature, array( 'editor-style', 'widgets', 'menus' ) ) ) + return false; + + return _remove_theme_support( $feature ); +} + +/** + * Do not use. Removes theme support internally, ignorant of the blacklist. + * + * @access private + * @since 3.1.0 + */ +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 ( $support[0]['wp-head-callback'] ) + remove_action( 'wp_head', $support[0]['wp-head-callback'] ); + 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' ); + 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 + * + * @since 2.9.0 + * @param string $feature the feature being checked + * @return boolean + */ +function current_theme_supports( $feature ) { + global $_wp_theme_features; + + if ( 'custom-header-uploads' == $feature ) + return current_theme_supports( 'custom-header', 'uploads' ); + + if ( !isset( $_wp_theme_features[$feature] ) ) + return false; + + // If no args passed then no extra checks need be performed + if ( func_num_args() <= 1 ) + return true; + + $args = array_slice( func_get_args(), 1 ); + + 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] ); + break; + + 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] ); + break; + + case 'custom-header': + case 'custom-background' : + // specific custom header and background capabilities can be registered by passing + // an array to add_theme_support() + $header_support = $args[0]; + return ( isset( $_wp_theme_features[$feature][0][$header_support] ) && $_wp_theme_features[$feature][0][$header_support] ); + break; + } + + return apply_filters('current_theme_supports-' . $feature, true, $args, $_wp_theme_features[$feature]); +} + +/** + * 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 + * @param string $include the file containing the functions that implement the feature + */ +function require_if_theme_supports( $feature, $include) { + if ( current_theme_supports( $feature ) ) + require ( $include ); +} + +/** + * 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 + * @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(); + + if ( $header_image && $header_image == $attachment_image ) + remove_theme_mod( 'header_image' ); + + if ( $background_image && $background_image == $attachment_image ) + remove_theme_mod( 'background_image' ); +} + +add_action( 'delete_attachment', '_delete_attachment_theme_mod' ); + +/** + * Checks if a theme has been changed and runs 'after_switch_theme' hook on the next WP load + * + * @since 3.3.0 + */ +function check_theme_switched() { + if ( $stylesheet = get_option( 'theme_switched' ) ) { + $old_theme = wp_get_theme( $stylesheet ); + + if ( $old_theme->exists() ) + do_action( 'after_switch_theme', $old_theme->get('Name'), $old_theme ); + else + do_action( 'after_switch_theme', $stylesheet ); + + update_option( 'theme_switched', false ); + } +} + +/** + * Includes and instantiates the WP_Customize_Manager class. + * + * Fires when ?wp_customize=on or on wp-admin/customize.php. + * + * @since 3.4.0 + */ +function _wp_customize_include() { + if ( ! ( ( isset( $_REQUEST['wp_customize'] ) && 'on' == $_REQUEST['wp_customize'] ) + || ( is_admin() && 'customize.php' == basename( $_SERVER['PHP_SELF'] ) ) + ) ) + return; + + require( ABSPATH . WPINC . '/class-wp-customize-manager.php' ); + // Init Customize class + $GLOBALS['wp_customize'] = new WP_Customize_Manager; +} +add_action( 'plugins_loaded', '_wp_customize_include' ); + +/** + * Adds settings for the customize-loader script. + * + * @since 3.4.0 + */ +function _wp_customize_loader_settings() { + global $wp_scripts; + + $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, + ); + + $script = 'var _wpCustomizeLoaderSettings = ' . json_encode( $settings ) . ';'; + + $data = $wp_scripts->get_data( 'customize-loader', 'data' ); + if ( $data ) + $script = "$data\n$script"; + + $wp_scripts->add_data( 'customize-loader', 'data', $script ); +} +add_action( 'admin_enqueue_scripts', '_wp_customize_loader_settings' ); + +/** + * Returns a URL to load the theme customizer. + * + * @since 3.4.0 + * + * @param string $stylesheet Optional. Theme to customize. Defaults to current theme. + * The theme's stylesheet will be urlencoded if necessary. + */ +function wp_customize_url( $stylesheet = null ) { + $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 + */ +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' ] ) ); + + ?> + +