* 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() {
- delete_site_transient('update_themes');
+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();
* 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
+ * 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
- * @uses apply_filters() Calls 'stylesheet' filter on stylesheet name.
*
* @return string Stylesheet name.
*/
function get_stylesheet() {
- return apply_filters('stylesheet', get_option('stylesheet'));
+ /**
+ * Filter the name of current stylesheet.
+ *
+ * @since 1.5.0
+ *
+ * @param string $stylesheet Name of the current 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.
*/
$theme_root = get_theme_root( $stylesheet );
$stylesheet_dir = "$theme_root/$stylesheet";
+ /**
+ * Filter the stylesheet directory path for current theme.
+ *
+ * @since 1.5.0
+ *
+ * @param string $stylesheet_dir Absolute path to the current them.
+ * @param string $stylesheet Directory name of the current theme.
+ * @param string $theme_root Absolute path to themes directory.
+ */
return apply_filters( 'stylesheet_directory', $stylesheet_dir, $stylesheet, $theme_root );
}
* @return string
*/
function get_stylesheet_directory_uri() {
- $stylesheet = get_stylesheet();
+ $stylesheet = str_replace( '%2F', '/', rawurlencode( get_stylesheet() ) );
$theme_root_uri = get_theme_root_uri( $stylesheet );
$stylesheet_dir_uri = "$theme_root_uri/$stylesheet";
+ /**
+ * Filter 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 );
}
* 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);
+ /**
+ * Filter the URI of the current theme stylesheet.
+ *
+ * @since 1.5.0
+ *
+ * @param string $stylesheet_uri Stylesheet URI for the current theme/child theme.
+ * @param string $stylesheet_dir_uri Stylesheet directory URI for the current theme/child theme.
+ */
+ return apply_filters( 'stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri );
}
/**
* 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
*/
$stylesheet_uri = "$stylesheet_dir_uri/{$wp_locale->text_direction}.css";
else
$stylesheet_uri = '';
- return apply_filters('locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri);
+ /**
+ * Filter 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 );
}
/**
* @return string Template name.
*/
function get_template() {
- return apply_filters('template', get_option('template'));
+ /**
+ * Filter the name of the current theme.
+ *
+ * @since 1.5.0
+ *
+ * @param string $template Current theme's directory name.
+ */
+ return apply_filters( 'template', get_option( 'template' ) );
}
/**
* 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.
*/
$theme_root = get_theme_root( $template );
$template_dir = "$theme_root/$template";
+ /**
+ * Filter the current theme directory path.
+ *
+ * @since 1.5.0
+ *
+ * @param string $template_dir The URI of the current theme directory.
+ * @param string $template Directory name of the current theme.
+ * @param string $theme_root Absolute path to the themes directory.
+ */
return apply_filters( 'template_directory', $template_dir, $template, $theme_root );
}
* 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();
+ $template = str_replace( '%2F', '/', rawurlencode( get_template() ) );
$theme_root_uri = get_theme_root_uri( $template );
$template_dir_uri = "$theme_root_uri/$template";
+ /**
+ * Filter the current theme directory URI.
+ *
+ * @since 1.5.0
+ *
+ * @param string $template_dir_uri The URI of the current theme directory.
+ * @param string $template Directory name of the current theme.
+ * @param string $theme_root_uri The themes root URI.
+ */
return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri );
}
// 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 ) )
+ if ( ! file_exists( $directory ) ) {
return false;
+ }
+ }
+
+ if ( ! is_array( $wp_theme_directories ) ) {
+ $wp_theme_directories = array();
}
- $wp_theme_directories[] = $directory;
+ $untrailed = untrailingslashit( $directory );
+ if ( ! empty( $untrailed ) && ! in_array( $untrailed, $wp_theme_directories ) ) {
+ $wp_theme_directories[] = $untrailed;
+ }
return true;
}
$relative_theme_roots[ $theme_root ] = $theme_root;
}
+ /**
+ * Filter 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 $cache_directory Directory to be searched for the cache.
+ */
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 ) ) {
// Start with directories in the root of the current theme directory.
$dirs = @ scandir( $theme_root );
- if ( ! $dirs )
- return false;
+ 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;
// 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 )
- return false;
+ 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;
* 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.
$theme_root = WP_CONTENT_DIR . '/themes';
}
+ /**
+ * Filter 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 );
}
$theme_root_uri = content_url( 'themes' );
}
- return apply_filters( 'theme_root_uri', $theme_root_uri, get_option('siteurl'), $stylesheet_or_template );
+ /**
+ * Filter 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 Stylesheet or template name of the theme.
+ */
+ return apply_filters( 'theme_root_uri', $theme_root_uri, get_option( 'siteurl' ), $stylesheet_or_template );
}
/**
)
return $matches[1] . "#$matches[2] onclick=$matches[2]return false;" . $matches[4];
- $link = add_query_arg( array( 'preview' => 1, 'template' => $_GET['template'], 'stylesheet' => @$_GET['stylesheet'], 'preview_iframe' => 1 ), $matches[3] );
+ $stylesheet = isset( $_GET['stylesheet'] ) ? $_GET['stylesheet'] : '';
+ $template = isset( $_GET['template'] ) ? $_GET['template'] : '';
+
+ $link = add_query_arg( array( 'preview' => 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];
* 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;
+ global $wp_theme_directories, $wp_customize, $sidebars_widgets;
- if ( is_array( $sidebars_widgets ) )
- set_theme_mod( 'sidebars_widgets', array( 'time' => time(), 'data' => $sidebars_widgets ) );
+ $_sidebars_widgets = null;
+ if ( 'wp_ajax_customize_save' === current_action() ) {
+ $_sidebars_widgets = $wp_customize->post_value( $wp_customize->get_setting( 'old_sidebars_widgets_data' ) );
+ } 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 ) );
+ }
$old_theme = wp_get_theme();
$new_theme = wp_get_theme( $stylesheet );
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_' . $new_name );
add_option( "theme_mods_$stylesheet", $default_theme_mods );
+ } else {
+ /*
+ * Since retrieve_widgets() is called when initializing the customizer theme,
+ * we need to to remove the theme mods to avoid overwriting changes made via
+ * the widget customizer when accessing wp-admin/widgets.php.
+ */
+ if ( 'wp_ajax_customize_save' === current_action() ) {
+ remove_theme_mod( 'sidebars_widgets' );
+ }
}
update_option( 'theme_switched', $old_theme->get_stylesheet() );
+ /**
+ * Fires after the theme is switched.
+ *
+ * @since 1.5.0
+ *
+ * @param string $new_name Name of the new theme.
+ * @param WP_Theme $new_theme WP_Theme instance of the new theme.
+ */
do_action( 'switch_theme', $new_name, $new_theme );
}
* @return bool
*/
function validate_current_theme() {
- // Don't validate during an install/upgrade.
- if ( defined('WP_INSTALLING') || !apply_filters( 'validate_current_theme', true ) )
+ /**
+ * Filter whether to validate the current theme.
+ *
+ * @since 2.7.0
+ *
+ * @param bool true Validation flag to check the current theme.
+ */
+ if ( defined('WP_INSTALLING') || ! apply_filters( 'validate_current_theme', true ) )
return true;
if ( get_template() != WP_DEFAULT_THEME && !file_exists(get_template_directory() . '/index.php') ) {
* directory URI.
*
* @since 2.1.0
- * @uses apply_filters() Calls 'theme_mod_$name' filter on the value.
*
* @param string $name Theme modification name.
* @param bool|string $default
function get_theme_mod( $name, $default = false ) {
$mods = get_theme_mods();
- if ( isset( $mods[ $name ] ) )
- return apply_filters( "theme_mod_$name", $mods[ $name ] );
+ if ( isset( $mods[$name] ) ) {
+ /**
+ * Filter the theme modification, or 'theme_mod', value.
+ *
+ * The dynamic portion of the hook name, $name, refers to
+ * the key name of the modification array. For example,
+ * 'header_textcolor', 'header_image', and so on depending
+ * on the theme options.
+ *
+ * @since 2.2.0
+ *
+ * @param string $current_mod The value of the current theme modification.
+ */
+ return apply_filters( "theme_mod_{$name}", $mods[$name] );
+ }
if ( is_string( $default ) )
$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
- return apply_filters( "theme_mod_$name", $default );
+ /** This filter is documented in wp-includes/theme.php */
+ return apply_filters( "theme_mod_{$name}", $default );
}
/**
*/
function set_theme_mod( $name, $value ) {
$mods = get_theme_mods();
-
- $mods[ $name ] = $value;
+ $old_value = isset( $mods[ $name ] ) ? $mods[ $name ] : false;
+
+ /**
+ * Filter the theme mod value on save.
+ *
+ * The dynamic portion of the hook name, $name, refers to the key name of
+ * the modification array. For example, 'header_textcolor', 'header_image',
+ * and so on depending on the theme options.
+ *
+ * @since 3.9.0
+ *
+ * @param string $value The new value of the theme mod.
+ * @param string $old_value The current value of the theme mod.
+ */
+ $mods[ $name ] = apply_filters( "pre_set_theme_mod_$name", $value, $old_value );
$theme = get_option( 'stylesheet' );
update_option( "theme_mods_$theme", $mods );
return array();
foreach ( (array) $headers as $header ) {
- $url = esc_url_raw( $header->guid );
+ $url = esc_url_raw( wp_get_attachment_url( $header->ID ) );
$header_data = wp_get_attachment_metadata( $header->ID );
$header_index = basename($url);
$header_images[$header_index] = array();
* @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.
+ * @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;
// $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' );
+ $color = get_background_color();
+
+ if ( $color === get_theme_support( 'custom-background', 'default-color' ) ) {
+ $color = false;
+ }
if ( ! $background && ! $color )
return;
if ( $background ) {
$image = " background-image: url('$background');";
- $repeat = get_theme_mod( 'background_repeat', 'repeat' );
+ $repeat = get_theme_mod( 'background_repeat', get_theme_support( 'custom-background', 'default-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' );
+ $position = get_theme_mod( 'background_position_x', get_theme_support( 'custom-background', 'default-position-x' ) );
if ( ! in_array( $position, array( 'center', 'right', 'left' ) ) )
$position = 'left';
$position = " background-position: top $position;";
- $attachment = get_theme_mod( 'background_attachment', 'scroll' );
+ $attachment = get_theme_mod( 'background_attachment', get_theme_support( 'custom-background', 'default-attachment' ) );
if ( ! in_array( $attachment, array( 'fixed', 'scroll' ) ) )
$attachment = 'scroll';
$attachment = " background-attachment: $attachment;";
return true;
}
+/**
+ * Retrieve any registered editor stylesheets
+ *
+ * @since 4.0.0
+ *
+ * @global $editor_styles Registered editor stylesheets
+ *
+ * @return array If registered, a list of editor stylesheet URLs.
+ */
+function get_editor_stylesheets() {
+ $stylesheets = array();
+ // load editor_style.css if the current theme supports it
+ if ( ! empty( $GLOBALS['editor_styles'] ) && is_array( $GLOBALS['editor_styles'] ) ) {
+ $editor_styles = $GLOBALS['editor_styles'];
+
+ $editor_styles = array_unique( array_filter( $editor_styles ) );
+ $style_uri = get_stylesheet_directory_uri();
+ $style_dir = get_stylesheet_directory();
+
+ // Support externally referenced styles (like, say, fonts).
+ foreach ( $editor_styles as $key => $file ) {
+ if ( preg_match( '~^(https?:)?//~', $file ) ) {
+ $stylesheets[] = esc_url_raw( $file );
+ unset( $editor_styles[ $key ] );
+ }
+ }
+
+ // Look in a parent theme first, that way child theme CSS overrides.
+ if ( is_child_theme() ) {
+ $template_uri = get_template_directory_uri();
+ $template_dir = get_template_directory();
+
+ foreach ( $editor_styles as $key => $file ) {
+ if ( $file && file_exists( "$template_dir/$file" ) ) {
+ $stylesheets[] = "$template_uri/$file";
+ }
+ }
+ }
+
+ foreach ( $editor_styles as $file ) {
+ if ( $file && file_exists( "$style_dir/$file" ) ) {
+ $stylesheets[] = "$style_uri/$file";
+ }
+ }
+ }
+ return $stylesheets;
+}
+
/**
* Allows a theme to register its support of a certain feature
*
* The init hook may be too late for some features.
*
* @since 2.9.0
- * @param string $feature the feature being added
+ *
+ * @param string $feature The feature being added.
+ * @return void|bool False on failure, void otherwise.
*/
function add_theme_support( $feature ) {
global $_wp_theme_features;
$args[0] = array_intersect( $args[0], array_keys( get_post_format_slugs() ) );
break;
+ case 'html5' :
+ // You can't just pass 'html5', you need to pass an array of types.
+ if ( empty( $args[0] ) ) {
+ // Build an array of types for back-compat.
+ $args = array( 0 => array( 'comment-list', 'comment-form', 'search-form' ) );
+ } elseif ( ! 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' => '',
- 'default-color' => '',
- 'wp-head-callback' => '_custom_background_cb',
- 'admin-head-callback' => '',
+ 'default-image' => '',
+ 'default-repeat' => 'repeat',
+ 'default-position-x' => 'left',
+ 'default-attachment' => 'scroll',
+ 'default-color' => '',
+ 'wp-head-callback' => '_custom_background_cb',
+ 'admin-head-callback' => '',
'admin-preview-callback' => '',
);
/**
* Gets the theme support arguments passed when registering that support
*
- * @since 3.1
+ * @since 3.1.0
+ *
* @param string $feature the feature to check
* @return array The array of extra arguments
*/
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;
}
}
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()
- $post_format = $args[0];
- return in_array( $post_format, $_wp_theme_features[$feature][0] );
- break;
+
+ // 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] );
case 'custom-header':
case 'custom-background' :
// 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]);
+ /**
+ * Filter whether the current theme supports a specific feature.
+ *
+ * The dynamic portion of the hook name, $feature, refers to
+ * the specific theme feature. Possible values include 'post-formats',
+ * 'post-thumbnails', 'custom-background', 'custom-header', 'menus',
+ * 'automatic-feed-links', and 'html5'.
+ *
+ * @since 3.4.0
+ *
+ * @param bool true Whether the current theme supports the given feature. Default true.
+ * @param array $args Array of arguments for the feature.
+ * @param string $feature The theme feature.
+ */
+ return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[$feature] );
}
/**
* 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
+ *
+ * @param string $feature The feature being checked.
+ * @param string $include Path to the file.
+ * @return bool True if the current theme supports the supplied feature, false otherwise.
*/
-function require_if_theme_supports( $feature, $include) {
- if ( current_theme_supports( $feature ) )
+function require_if_theme_supports( $feature, $include ) {
+ if ( current_theme_supports( $feature ) ) {
require ( $include );
+ return true;
+ }
+ return false;
}
/**
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
+ // Prevent retrieve_widgets() from running since Customizer already called it up front
+ if ( get_option( 'theme_switched_via_customizer' ) ) {
+ remove_action( 'after_switch_theme', '_wp_sidebars_changed' );
+ update_option( 'theme_switched_via_customizer', false );
+ }
+
+ if ( $old_theme->exists() ) {
+ /**
+ * Fires on the first WP load after a theme switch if the old theme still exists.
+ *
+ * This action fires multiple times and the parameters differs
+ * according to the context, if the old theme exists or not.
+ * If the old theme is missing, the parameter will be the slug
+ * of the old theme.
+ *
+ * @since 3.3.0
+ *
+ * @param string $old_name Old theme name.
+ * @param WP_Theme $old_theme WP_Theme instance of the old theme.
+ */
+ do_action( 'after_switch_theme', $old_theme->get( 'Name' ), $old_theme );
+ } else {
+ /** This action is documented in wp-includes/theme.php */
do_action( 'after_switch_theme', $stylesheet );
+ }
update_option( 'theme_switched', false );
}
'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.' ),
+ ),
);
$script = 'var _wpCustomizeLoaderSettings = ' . json_encode( $settings ) . ';';
}());
</script>
<?php
-}
\ No newline at end of file
+}
+
+/**
+ * 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 is_a( $wp_customize, 'WP_Customize_Manager' ) && $wp_customize->is_preview();
+}