--- /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 @@
+<?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
+ *
+ * @param array $args The search arguments. Optional.
+ * - errors mixed True to return themes with errors, false to return themes without errors, null
+ * to return all themes. Defaults to false.
+ * - allowed mixed (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. Defaults to null.
+ * - blog_id int (Multisite) The blog ID used to calculate which themes are allowed. Defaults to 0,
+ * synonymous for the current blog.
+ * @return 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 ( 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 '<link rel="stylesheet" href="' . $stylesheet . '" type="text/css" media="screen" />';
+}
+
+/**
+ * Start preview theme output buffer.
+ *
+ * Will only perform task if the user has permissions and template and preview
+ * query variables exist.
+ *
+ * @since 2.6.0
+ */
+function preview_theme() {
+ if ( ! (isset($_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( "|(<a.*?href=([\"']))(.*?)([\"'].*?>)|", '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#i', '', $matches[4]); //Strip out any onclicks from rest of <a>. (?<!\\\) means to ignore the '" if it's escaped by \ to prevent breaking mid-attribute.
+ if (
+ ( false !== strpos($matches[3], '/wp-admin/') )
+ ||
+ ( false !== strpos( $matches[3], '://' ) && 0 !== strpos( $matches[3], home_url() ) )
+ ||
+ ( false !== strpos($matches[3], '/feed/') )
+ ||
+ ( false !== strpos($matches[3], '/trackback/') )
+ )
+ return $matches[1] . "#$matches[2] onclick=$matches[2]return false;" . $matches[4];
+
+ $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];
+}
+
+/**
+ * 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;
+ }
+?>
+<style type="text/css" id="custom-background-css">
+body.custom-background { <?php echo trim( $style ); ?> }
+</style>
+<?php
+}
+
+/**
+ * Add 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
+ *
+ * @param mixed $stylesheet Optional. Stylesheet name or array thereof, relative to theme root.
+ * Defaults to 'editor-style.css'
+ */
+function add_editor_style( $stylesheet = 'editor-style.css' ) {
+
+ add_theme_support( 'editor-style' );
+
+ if ( ! is_admin() )
+ return;
+
+ global $editor_styles;
+ $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
+ *
+ * @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;
+}
+
+/**
+ * Allows a theme to register its support of a certain feature
+ *
+ * Must be called in the theme's functions.php file to work.
+ * If attached to a hook, it must be after_setup_theme.
+ * The init hook may be too late for some features.
+ *
+ * @since 2.9.0
+ * @param string $feature the feature being added
+ */
+function add_theme_support( $feature ) {
+ global $_wp_theme_features;
+
+ if ( func_num_args() == 1 )
+ $args = true;
+ else
+ $args = array_slice( func_get_args(), 1 );
+
+ switch ( $feature ) {
+ case 'post-formats' :
+ if ( is_array( $args[0] ) )
+ $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] ) ) {
+ $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' => '',
+ '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( $home_origin[ 'host' ] ) );
+
+ ?>
+ <script type="text/javascript">
+ (function() {
+ var request, b = document.body, c = 'className', cs = 'customize-support', rcs = new RegExp('(^|\\s+)(no-)?'+cs+'(\\s+|$)');
+
+<?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, ' ' );
+ b[c] += ( window.postMessage && request ? ' ' : ' no-' ) + cs;
+ }());
+ </script>
+ <?php
+}
\ No newline at end of file