9 final class WP_Theme implements ArrayAccess {
12 * Headers for style.css files.
18 private static $file_headers = array(
19 'Name' => 'Theme Name',
20 'ThemeURI' => 'Theme URI',
21 'Description' => 'Description',
23 'AuthorURI' => 'Author URI',
24 'Version' => 'Version',
25 'Template' => 'Template',
28 'TextDomain' => 'Text Domain',
29 'DomainPath' => 'Domain Path',
39 private static $default_themes = array(
40 'classic' => 'WordPress Classic',
41 'default' => 'WordPress Default',
42 'twentyten' => 'Twenty Ten',
43 'twentyeleven' => 'Twenty Eleven',
44 'twentytwelve' => 'Twenty Twelve',
45 'twentythirteen' => 'Twenty Thirteen',
46 'twentyfourteen' => 'Twenty Fourteen',
52 private static $tag_map = array(
53 'fixed-width' => 'fixed-layout',
54 'flexible-width' => 'fluid-layout',
58 * Absolute path to the theme root, usually wp-content/themes
66 * Header data from the theme's style.css file.
71 private $headers = array();
74 * Header data from the theme's style.css file after being sanitized.
79 private $headers_sanitized;
82 * Header name from the theme's style.css after being translated.
84 * Cached due to sorting functions running over the translated name.
86 private $name_translated;
89 * Errors encountered when initializing the theme.
97 * The directory name of the theme's files, inside the theme root.
99 * In the case of a child theme, this is directory name of the child theme.
100 * Otherwise, 'stylesheet' is the same as 'template'.
108 * The directory name of the theme's files, inside the theme root.
110 * In the case of a child theme, this is the directory name of the parent theme.
111 * Otherwise, 'template' is the same as 'stylesheet'.
119 * A reference to the parent theme, in the case of a child theme.
127 * URL to the theme root, usually an absolute URL to wp-content/themes
132 private $theme_root_uri;
135 * Flag for whether the theme's textdomain is loaded.
140 private $textdomain_loaded;
143 * Stores an md5 hash of the theme root, to function as the cache key.
151 * Flag for whether the themes cache bucket should be persistently cached.
153 * Default is false. Can be set with the wp_cache_themes_persistently filter.
158 private static $persistently_cache;
161 * Expiration time for the themes cache bucket.
163 * By default the bucket is not cached, so this value is useless.
168 private static $cache_expiration = 1800;
171 * Constructor for WP_Theme.
173 * @param string $theme_dir Directory of the theme within the theme_root.
174 * @param string $theme_root Theme root.
175 * @param WP_Error|null $_child If this theme is a parent theme, the child may be passed for validation purposes.
177 public function __construct( $theme_dir, $theme_root, $_child = null ) {
178 global $wp_theme_directories;
180 // Initialize caching on first run.
181 if ( ! isset( self::$persistently_cache ) ) {
182 /** This action is documented in wp-includes/theme.php */
183 self::$persistently_cache = apply_filters( 'wp_cache_themes_persistently', false, 'WP_Theme' );
184 if ( self::$persistently_cache ) {
185 wp_cache_add_global_groups( 'themes' );
186 if ( is_int( self::$persistently_cache ) )
187 self::$cache_expiration = self::$persistently_cache;
189 wp_cache_add_non_persistent_groups( 'themes' );
193 $this->theme_root = $theme_root;
194 $this->stylesheet = $theme_dir;
196 // Correct a situation where the theme is 'some-directory/some-theme' but 'some-directory' was passed in as part of the theme root instead.
197 if ( ! in_array( $theme_root, (array) $wp_theme_directories ) && in_array( dirname( $theme_root ), (array) $wp_theme_directories ) ) {
198 $this->stylesheet = basename( $this->theme_root ) . '/' . $this->stylesheet;
199 $this->theme_root = dirname( $theme_root );
202 $this->cache_hash = md5( $this->theme_root . '/' . $this->stylesheet );
203 $theme_file = $this->stylesheet . '/style.css';
205 $cache = $this->cache_get( 'theme' );
207 if ( is_array( $cache ) ) {
208 foreach ( array( 'errors', 'headers', 'template' ) as $key ) {
209 if ( isset( $cache[ $key ] ) )
210 $this->$key = $cache[ $key ];
214 if ( isset( $cache['theme_root_template'] ) )
215 $theme_root_template = $cache['theme_root_template'];
216 } elseif ( ! file_exists( $this->theme_root . '/' . $theme_file ) ) {
217 $this->headers['Name'] = $this->stylesheet;
218 if ( ! file_exists( $this->theme_root . '/' . $this->stylesheet ) )
219 $this->errors = new WP_Error( 'theme_not_found', sprintf( __( 'The theme directory "%s" does not exist.' ), $this->stylesheet ) );
221 $this->errors = new WP_Error( 'theme_no_stylesheet', __( 'Stylesheet is missing.' ) );
222 $this->template = $this->stylesheet;
223 $this->cache_add( 'theme', array( 'headers' => $this->headers, 'errors' => $this->errors, 'stylesheet' => $this->stylesheet, 'template' => $this->template ) );
224 if ( ! file_exists( $this->theme_root ) ) // Don't cache this one.
225 $this->errors->add( 'theme_root_missing', __( 'ERROR: The themes directory is either empty or doesn’t exist. Please check your installation.' ) );
227 } elseif ( ! is_readable( $this->theme_root . '/' . $theme_file ) ) {
228 $this->headers['Name'] = $this->stylesheet;
229 $this->errors = new WP_Error( 'theme_stylesheet_not_readable', __( 'Stylesheet is not readable.' ) );
230 $this->template = $this->stylesheet;
231 $this->cache_add( 'theme', array( 'headers' => $this->headers, 'errors' => $this->errors, 'stylesheet' => $this->stylesheet, 'template' => $this->template ) );
234 $this->headers = get_file_data( $this->theme_root . '/' . $theme_file, self::$file_headers, 'theme' );
235 // Default themes always trump their pretenders.
236 // Properly identify default themes that are inside a directory within wp-content/themes.
237 if ( $default_theme_slug = array_search( $this->headers['Name'], self::$default_themes ) ) {
238 if ( basename( $this->stylesheet ) != $default_theme_slug )
239 $this->headers['Name'] .= '/' . $this->stylesheet;
243 // (If template is set from cache [and there are no errors], we know it's good.)
244 if ( ! $this->template && ! ( $this->template = $this->headers['Template'] ) ) {
245 $this->template = $this->stylesheet;
246 if ( ! file_exists( $this->theme_root . '/' . $this->stylesheet . '/index.php' ) ) {
247 $this->errors = new WP_Error( 'theme_no_index', __( 'Template is missing.' ) );
248 $this->cache_add( 'theme', array( 'headers' => $this->headers, 'errors' => $this->errors, 'stylesheet' => $this->stylesheet, 'template' => $this->template ) );
253 // If we got our data from cache, we can assume that 'template' is pointing to the right place.
254 if ( ! is_array( $cache ) && $this->template != $this->stylesheet && ! file_exists( $this->theme_root . '/' . $this->template . '/index.php' ) ) {
255 // If we're in a directory of themes inside /themes, look for the parent nearby.
256 // wp-content/themes/directory-of-themes/*
257 $parent_dir = dirname( $this->stylesheet );
258 if ( '.' != $parent_dir && file_exists( $this->theme_root . '/' . $parent_dir . '/' . $this->template . '/index.php' ) ) {
259 $this->template = $parent_dir . '/' . $this->template;
260 } elseif ( ( $directories = search_theme_directories() ) && isset( $directories[ $this->template ] ) ) {
261 // Look for the template in the search_theme_directories() results, in case it is in another theme root.
262 // We don't look into directories of themes, just the theme root.
263 $theme_root_template = $directories[ $this->template ]['theme_root'];
265 // Parent theme is missing.
266 $this->errors = new WP_Error( 'theme_no_parent', sprintf( __( 'The parent theme is missing. Please install the "%s" parent theme.' ), $this->template ) );
267 $this->cache_add( 'theme', array( 'headers' => $this->headers, 'errors' => $this->errors, 'stylesheet' => $this->stylesheet, 'template' => $this->template ) );
268 $this->parent = new WP_Theme( $this->template, $this->theme_root, $this );
273 // Set the parent, if we're a child theme.
274 if ( $this->template != $this->stylesheet ) {
275 // If we are a parent, then there is a problem. Only two generations allowed! Cancel things out.
276 if ( is_a( $_child, 'WP_Theme' ) && $_child->template == $this->stylesheet ) {
277 $_child->parent = null;
278 $_child->errors = new WP_Error( 'theme_parent_invalid', sprintf( __( 'The "%s" theme is not a valid parent theme.' ), $_child->template ) );
279 $_child->cache_add( 'theme', array( 'headers' => $_child->headers, 'errors' => $_child->errors, 'stylesheet' => $_child->stylesheet, 'template' => $_child->template ) );
280 // The two themes actually reference each other with the Template header.
281 if ( $_child->stylesheet == $this->template ) {
282 $this->errors = new WP_Error( 'theme_parent_invalid', sprintf( __( 'The "%s" theme is not a valid parent theme.' ), $this->template ) );
283 $this->cache_add( 'theme', array( 'headers' => $this->headers, 'errors' => $this->errors, 'stylesheet' => $this->stylesheet, 'template' => $this->template ) );
287 // Set the parent. Pass the current instance so we can do the crazy checks above and assess errors.
288 $this->parent = new WP_Theme( $this->template, isset( $theme_root_template ) ? $theme_root_template : $this->theme_root, $this );
291 // We're good. If we didn't retrieve from cache, set it.
292 if ( ! is_array( $cache ) ) {
293 $cache = array( 'headers' => $this->headers, 'errors' => $this->errors, 'stylesheet' => $this->stylesheet, 'template' => $this->template );
294 // If the parent theme is in another root, we'll want to cache this. Avoids an entire branch of filesystem calls above.
295 if ( isset( $theme_root_template ) )
296 $cache['theme_root_template'] = $theme_root_template;
297 $this->cache_add( 'theme', $cache );
302 * When converting the object to a string, the theme name is returned.
304 * @return string Theme name, ready for display (translated)
306 public function __toString() {
307 return (string) $this->display('Name');
311 * __isset() magic method for properties formerly returned by current_theme_info()
313 public function __isset( $offset ) {
314 static $properties = array(
315 'name', 'title', 'version', 'parent_theme', 'template_dir', 'stylesheet_dir', 'template', 'stylesheet',
316 'screenshot', 'description', 'author', 'tags', 'theme_root', 'theme_root_uri',
319 return in_array( $offset, $properties );
323 * __get() magic method for properties formerly returned by current_theme_info()
325 public function __get( $offset ) {
329 return $this->get('Name');
331 return $this->get('Version');
332 case 'parent_theme' :
333 return $this->parent() ? $this->parent()->get('Name') : '';
334 case 'template_dir' :
335 return $this->get_template_directory();
336 case 'stylesheet_dir' :
337 return $this->get_stylesheet_directory();
339 return $this->get_template();
341 return $this->get_stylesheet();
343 return $this->get_screenshot( 'relative' );
344 // 'author' and 'description' did not previously return translated data.
346 return $this->display('Description');
348 return $this->display('Author');
350 return $this->get( 'Tags' );
352 return $this->get_theme_root();
353 case 'theme_root_uri' :
354 return $this->get_theme_root_uri();
355 // For cases where the array was converted to an object.
357 return $this->offsetGet( $offset );
362 * Method to implement ArrayAccess for keys formerly returned by get_themes()
364 public function offsetSet( $offset, $value ) {}
367 * Method to implement ArrayAccess for keys formerly returned by get_themes()
369 public function offsetUnset( $offset ) {}
372 * Method to implement ArrayAccess for keys formerly returned by get_themes()
374 public function offsetExists( $offset ) {
375 static $keys = array(
376 'Name', 'Version', 'Status', 'Title', 'Author', 'Author Name', 'Author URI', 'Description',
377 'Template', 'Stylesheet', 'Template Files', 'Stylesheet Files', 'Template Dir', 'Stylesheet Dir',
378 'Screenshot', 'Tags', 'Theme Root', 'Theme Root URI', 'Parent Theme',
381 return in_array( $offset, $keys );
385 * Method to implement ArrayAccess for keys formerly returned by get_themes().
387 * Author, Author Name, Author URI, and Description did not previously return
388 * translated data. We are doing so now as it is safe to do. However, as
389 * Name and Title could have been used as the key for get_themes(), both remain
390 * untranslated for back compatibility. This means that ['Name'] is not ideal,
391 * and care should be taken to use $theme->display('Name') to get a properly
394 public function offsetGet( $offset ) {
398 // See note above about using translated data. get() is not ideal.
399 // It is only for backwards compatibility. Use display().
400 return $this->get('Name');
402 return $this->display( 'Author');
404 return $this->display( 'Author', false);
406 return $this->display('AuthorURI');
408 return $this->display( 'Description');
411 return $this->get( $offset );
413 return $this->get_template();
415 return $this->get_stylesheet();
416 case 'Template Files' :
417 return $this->get_files( 'php', 1, true );
418 case 'Stylesheet Files' :
419 return $this->get_files( 'css', 0, false );
420 case 'Template Dir' :
421 return $this->get_template_directory();
422 case 'Stylesheet Dir' :
423 return $this->get_stylesheet_directory();
425 return $this->get_screenshot( 'relative' );
427 return $this->get('Tags');
429 return $this->get_theme_root();
430 case 'Theme Root URI' :
431 return $this->get_theme_root_uri();
432 case 'Parent Theme' :
433 return $this->parent() ? $this->parent()->get('Name') : '';
440 * Returns errors property.
445 * @return WP_Error|bool WP_Error if there are errors, or false.
447 public function errors() {
448 return is_wp_error( $this->errors ) ? $this->errors : false;
452 * Whether the theme exists.
454 * A theme with errors exists. A theme with the error of 'theme_not_found',
455 * meaning that the theme's directory was not found, does not exist.
460 * @return bool Whether the theme exists.
462 public function exists() {
463 return ! ( $this->errors() && in_array( 'theme_not_found', $this->errors()->get_error_codes() ) );
467 * Returns reference to the parent theme.
472 * @return WP_Theme|bool Parent theme, or false if the current theme is not a child theme.
474 public function parent() {
475 return isset( $this->parent ) ? $this->parent : false;
479 * Adds theme data to cache.
481 * Cache entries keyed by the theme and the type of data.
486 * @param string $key Type of data to store (theme, screenshot, headers, page_templates)
487 * @param string $data Data to store
488 * @return bool Return value from wp_cache_add()
490 private function cache_add( $key, $data ) {
491 return wp_cache_add( $key . '-' . $this->cache_hash, $data, 'themes', self::$cache_expiration );
495 * Gets theme data from cache.
497 * Cache entries are keyed by the theme and the type of data.
502 * @param string $key Type of data to retrieve (theme, screenshot, headers, page_templates)
503 * @return mixed Retrieved data
505 private function cache_get( $key ) {
506 return wp_cache_get( $key . '-' . $this->cache_hash, 'themes' );
510 * Clears the cache for the theme.
515 public function cache_delete() {
516 foreach ( array( 'theme', 'screenshot', 'headers', 'page_templates' ) as $key )
517 wp_cache_delete( $key . '-' . $this->cache_hash, 'themes' );
518 $this->template = $this->textdomain_loaded = $this->theme_root_uri = $this->parent = $this->errors = $this->headers_sanitized = $this->name_translated = null;
519 $this->headers = array();
520 $this->__construct( $this->stylesheet, $this->theme_root );
524 * Get a raw, unformatted theme header.
526 * The header is sanitized, but is not translated, and is not marked up for display.
527 * To get a theme header for display, use the display() method.
529 * Use the get_template() method, not the 'Template' header, for finding the template.
530 * The 'Template' header is only good for what was written in the style.css, while
531 * get_template() takes into account where WordPress actually located the theme and
532 * whether it is actually valid.
537 * @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
538 * @return string|bool String on success, false on failure.
540 public function get( $header ) {
541 if ( ! isset( $this->headers[ $header ] ) )
544 if ( ! isset( $this->headers_sanitized ) ) {
545 $this->headers_sanitized = $this->cache_get( 'headers' );
546 if ( ! is_array( $this->headers_sanitized ) )
547 $this->headers_sanitized = array();
550 if ( isset( $this->headers_sanitized[ $header ] ) )
551 return $this->headers_sanitized[ $header ];
553 // If themes are a persistent group, sanitize everything and cache it. One cache add is better than many cache sets.
554 if ( self::$persistently_cache ) {
555 foreach ( array_keys( $this->headers ) as $_header )
556 $this->headers_sanitized[ $_header ] = $this->sanitize_header( $_header, $this->headers[ $_header ] );
557 $this->cache_add( 'headers', $this->headers_sanitized );
559 $this->headers_sanitized[ $header ] = $this->sanitize_header( $header, $this->headers[ $header ] );
562 return $this->headers_sanitized[ $header ];
566 * Gets a theme header, formatted and translated for display.
571 * @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
572 * @param bool $markup Optional. Whether to mark up the header. Defaults to true.
573 * @param bool $translate Optional. Whether to translate the header. Defaults to true.
574 * @return string|bool Processed header, false on failure.
576 public function display( $header, $markup = true, $translate = true ) {
577 $value = $this->get( $header );
578 if ( false === $value ) {
582 if ( $translate && ( empty( $value ) || ! $this->load_textdomain() ) )
586 $value = $this->translate_header( $header, $value );
589 $value = $this->markup_header( $header, $value, $translate );
595 * Sanitize a theme header.
597 * @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
598 * @param string $value Value to sanitize.
600 private function sanitize_header( $header, $value ) {
607 // Fall through otherwise.
609 static $header_tags = array(
610 'abbr' => array( 'title' => true ),
611 'acronym' => array( 'title' => true ),
616 $value = wp_kses( $value, $header_tags );
619 // There shouldn't be anchor tags in Author, but some themes like to be challenging.
621 static $header_tags_with_a = array(
622 'a' => array( 'href' => true, 'title' => true ),
623 'abbr' => array( 'title' => true ),
624 'acronym' => array( 'title' => true ),
629 $value = wp_kses( $value, $header_tags_with_a );
633 $value = esc_url_raw( $value );
636 $value = array_filter( array_map( 'trim', explode( ',', strip_tags( $value ) ) ) );
644 * Mark up a theme header.
649 * @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
650 * @param string $value Value to mark up.
651 * @param string $translate Whether the header has been translated.
652 * @return string Value, marked up.
654 private function markup_header( $header, $value, $translate ) {
657 if ( empty( $value ) )
658 $value = $this->get_stylesheet();
661 $value = wptexturize( $value );
664 if ( $this->get('AuthorURI') ) {
666 if ( ! isset( $attr ) )
667 $attr = esc_attr__( 'Visit author homepage' );
668 $value = sprintf( '<a href="%1$s" title="%2$s">%3$s</a>', $this->display( 'AuthorURI', true, $translate ), $attr, $value );
669 } elseif ( ! $value ) {
670 $value = __( 'Anonymous' );
674 static $comma = null;
675 if ( ! isset( $comma ) ) {
676 /* translators: used between list items, there is a space after the comma */
679 $value = implode( $comma, $value );
683 $value = esc_url( $value );
691 * Translate a theme header.
696 * @param string $header Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
697 * @param string $value Value to translate.
698 * @return string Translated value.
700 private function translate_header( $header, $value ) {
703 // Cached for sorting reasons.
704 if ( isset( $this->name_translated ) )
705 return $this->name_translated;
706 $this->name_translated = translate( $value, $this->get('TextDomain' ) );
707 return $this->name_translated;
709 if ( empty( $value ) || ! function_exists( 'get_theme_feature_list' ) )
713 if ( ! isset( $tags_list ) ) {
714 $tags_list = array();
715 $feature_list = get_theme_feature_list( false ); // No API
716 foreach ( $feature_list as $tags )
720 foreach ( $value as &$tag ) {
721 if ( isset( $tags_list[ $tag ] ) ) {
722 $tag = $tags_list[ $tag ];
723 } elseif ( isset( self::$tag_map[ $tag ] ) ) {
724 $tag = $tags_list[ self::$tag_map[ $tag ] ];
731 $value = translate( $value, $this->get('TextDomain') );
737 * The directory name of the theme's "stylesheet" files, inside the theme root.
739 * In the case of a child theme, this is directory name of the child theme.
740 * Otherwise, get_stylesheet() is the same as get_template().
745 * @return string Stylesheet
747 public function get_stylesheet() {
748 return $this->stylesheet;
752 * The directory name of the theme's "template" files, inside the theme root.
754 * In the case of a child theme, this is the directory name of the parent theme.
755 * Otherwise, the get_template() is the same as get_stylesheet().
760 * @return string Template
762 public function get_template() {
763 return $this->template;
767 * Returns the absolute path to the directory of a theme's "stylesheet" files.
769 * In the case of a child theme, this is the absolute path to the directory
770 * of the child theme's files.
775 * @return string Absolute path of the stylesheet directory.
777 public function get_stylesheet_directory() {
778 if ( $this->errors() && in_array( 'theme_root_missing', $this->errors()->get_error_codes() ) )
781 return $this->theme_root . '/' . $this->stylesheet;
785 * Returns the absolute path to the directory of a theme's "template" files.
787 * In the case of a child theme, this is the absolute path to the directory
788 * of the parent theme's files.
793 * @return string Absolute path of the template directory.
795 public function get_template_directory() {
796 if ( $this->parent() )
797 $theme_root = $this->parent()->theme_root;
799 $theme_root = $this->theme_root;
801 return $theme_root . '/' . $this->template;
805 * Returns the URL to the directory of a theme's "stylesheet" files.
807 * In the case of a child theme, this is the URL to the directory of the
808 * child theme's files.
813 * @return string URL to the stylesheet directory.
815 public function get_stylesheet_directory_uri() {
816 return $this->get_theme_root_uri() . '/' . str_replace( '%2F', '/', rawurlencode( $this->stylesheet ) );
820 * Returns the URL to the directory of a theme's "template" files.
822 * In the case of a child theme, this is the URL to the directory of the
823 * parent theme's files.
828 * @return string URL to the template directory.
830 public function get_template_directory_uri() {
831 if ( $this->parent() )
832 $theme_root_uri = $this->parent()->get_theme_root_uri();
834 $theme_root_uri = $this->get_theme_root_uri();
836 return $theme_root_uri . '/' . str_replace( '%2F', '/', rawurlencode( $this->template ) );
840 * The absolute path to the directory of the theme root.
842 * This is typically the absolute path to wp-content/themes.
847 * @return string Theme root.
849 public function get_theme_root() {
850 return $this->theme_root;
854 * Returns the URL to the directory of the theme root.
856 * This is typically the absolute URL to wp-content/themes. This forms the basis
857 * for all other URLs returned by WP_Theme, so we pass it to the public function
858 * get_theme_root_uri() and allow it to run the theme_root_uri filter.
860 * @uses get_theme_root_uri()
865 * @return string Theme root URI.
867 public function get_theme_root_uri() {
868 if ( ! isset( $this->theme_root_uri ) )
869 $this->theme_root_uri = get_theme_root_uri( $this->stylesheet, $this->theme_root );
870 return $this->theme_root_uri;
874 * Returns the main screenshot file for the theme.
876 * The main screenshot is called screenshot.png. gif and jpg extensions are also allowed.
878 * Screenshots for a theme must be in the stylesheet directory. (In the case of child
879 * themes, parent theme screenshots are not inherited.)
884 * @param string $uri Type of URL to return, either 'relative' or an absolute URI. Defaults to absolute URI.
885 * @return mixed Screenshot file. False if the theme does not have a screenshot.
887 public function get_screenshot( $uri = 'uri' ) {
888 $screenshot = $this->cache_get( 'screenshot' );
890 if ( 'relative' == $uri )
892 return $this->get_stylesheet_directory_uri() . '/' . $screenshot;
893 } elseif ( 0 === $screenshot ) {
897 foreach ( array( 'png', 'gif', 'jpg', 'jpeg' ) as $ext ) {
898 if ( file_exists( $this->get_stylesheet_directory() . "/screenshot.$ext" ) ) {
899 $this->cache_add( 'screenshot', 'screenshot.' . $ext );
900 if ( 'relative' == $uri )
901 return 'screenshot.' . $ext;
902 return $this->get_stylesheet_directory_uri() . '/' . 'screenshot.' . $ext;
906 $this->cache_add( 'screenshot', 0 );
911 * Return files in the theme's directory.
916 * @param mixed $type Optional. Array of extensions to return. Defaults to all files (null).
917 * @param int $depth Optional. How deep to search for files. Defaults to a flat scan (0 depth). -1 depth is infinite.
918 * @param bool $search_parent Optional. Whether to return parent files. Defaults to false.
919 * @return array Array of files, keyed by the path to the file relative to the theme's directory, with the values
920 * being absolute paths.
922 public function get_files( $type = null, $depth = 0, $search_parent = false ) {
923 $files = (array) self::scandir( $this->get_stylesheet_directory(), $type, $depth );
925 if ( $search_parent && $this->parent() )
926 $files += (array) self::scandir( $this->get_template_directory(), $type, $depth );
932 * Returns the theme's page templates.
937 * @param WP_Post|null $post Optional. The post being edited, provided for context.
938 * @return array Array of page templates, keyed by filename, with the value of the translated header name.
940 public function get_page_templates( $post = null ) {
941 // If you screw up your current theme and we invalidate your parent, most things still work. Let it slide.
942 if ( $this->errors() && $this->errors()->get_error_codes() !== array( 'theme_parent_invalid' ) )
945 $page_templates = $this->cache_get( 'page_templates' );
947 if ( ! is_array( $page_templates ) ) {
948 $page_templates = array();
950 $files = (array) $this->get_files( 'php', 1 );
952 foreach ( $files as $file => $full_path ) {
953 if ( ! preg_match( '|Template Name:(.*)$|mi', file_get_contents( $full_path ), $header ) )
955 $page_templates[ $file ] = _cleanup_header_comment( $header[1] );
958 $this->cache_add( 'page_templates', $page_templates );
961 if ( $this->load_textdomain() ) {
962 foreach ( $page_templates as &$page_template ) {
963 $page_template = $this->translate_header( 'Template Name', $page_template );
967 if ( $this->parent() )
968 $page_templates += $this->parent()->get_page_templates( $post );
971 * Filter list of page templates for a theme.
973 * This filter does not currently allow for page templates to be added.
977 * @param array $page_templates Array of page templates. Keys are filenames,
978 * values are translated names.
979 * @param WP_Theme $this The theme object.
980 * @param WP_Post|null $post The post being edited, provided for context, or null.
982 $return = apply_filters( 'theme_page_templates', $page_templates, $this, $post );
984 return array_intersect_assoc( $return, $page_templates );
988 * Scans a directory for files of a certain extension.
993 * @param string $path Absolute path to search.
994 * @param mixed Array of extensions to find, string of a single extension, or null for all extensions.
995 * @param int $depth How deep to search for files. Optional, defaults to a flat scan (0 depth). -1 depth is infinite.
996 * @param string $relative_path The basename of the absolute path. Used to control the returned path
997 * for the found files, particularly when this function recurses to lower depths.
999 private static function scandir( $path, $extensions = null, $depth = 0, $relative_path = '' ) {
1000 if ( ! is_dir( $path ) )
1003 if ( $extensions ) {
1004 $extensions = (array) $extensions;
1005 $_extensions = implode( '|', $extensions );
1008 $relative_path = trailingslashit( $relative_path );
1009 if ( '/' == $relative_path )
1010 $relative_path = '';
1012 $results = scandir( $path );
1015 foreach ( $results as $result ) {
1016 if ( '.' == $result[0] )
1018 if ( is_dir( $path . '/' . $result ) ) {
1019 if ( ! $depth || 'CVS' == $result )
1021 $found = self::scandir( $path . '/' . $result, $extensions, $depth - 1 , $relative_path . $result );
1022 $files = array_merge_recursive( $files, $found );
1023 } elseif ( ! $extensions || preg_match( '~\.(' . $_extensions . ')$~', $result ) ) {
1024 $files[ $relative_path . $result ] = $path . '/' . $result;
1032 * Loads the theme's textdomain.
1034 * Translation files are not inherited from the parent theme. Todo: if this fails for the
1035 * child theme, it should probably try to load the parent theme's translations.
1040 * @return True if the textdomain was successfully loaded or has already been loaded. False if
1041 * no textdomain was specified in the file headers, or if the domain could not be loaded.
1043 public function load_textdomain() {
1044 if ( isset( $this->textdomain_loaded ) )
1045 return $this->textdomain_loaded;
1047 $textdomain = $this->get('TextDomain');
1048 if ( ! $textdomain ) {
1049 $this->textdomain_loaded = false;
1053 if ( is_textdomain_loaded( $textdomain ) ) {
1054 $this->textdomain_loaded = true;
1058 $path = $this->get_stylesheet_directory();
1059 if ( $domainpath = $this->get('DomainPath') )
1060 $path .= $domainpath;
1062 $path .= '/languages';
1064 $this->textdomain_loaded = load_theme_textdomain( $textdomain, $path );
1065 return $this->textdomain_loaded;
1069 * Whether the theme is allowed (multisite only).
1074 * @param string $check Optional. Whether to check only the 'network'-wide settings, the 'site'
1075 * settings, or 'both'. Defaults to 'both'.
1076 * @param int $blog_id Optional. Ignored if only network-wide settings are checked. Defaults to current blog.
1077 * @return bool Whether the theme is allowed for the network. Returns true in single-site.
1079 public function is_allowed( $check = 'both', $blog_id = null ) {
1080 if ( ! is_multisite() )
1083 if ( 'both' == $check || 'network' == $check ) {
1084 $allowed = self::get_allowed_on_network();
1085 if ( ! empty( $allowed[ $this->get_stylesheet() ] ) )
1089 if ( 'both' == $check || 'site' == $check ) {
1090 $allowed = self::get_allowed_on_site( $blog_id );
1091 if ( ! empty( $allowed[ $this->get_stylesheet() ] ) )
1099 * Returns array of stylesheet names of themes allowed on the site or network.
1104 * @param int $blog_id Optional. Defaults to current blog.
1105 * @return array Array of stylesheet names.
1107 public static function get_allowed( $blog_id = null ) {
1109 * Filter the array of themes allowed on the site or network.
1113 * @param array $allowed_themes An array of theme stylesheet names.
1115 $network = (array) apply_filters( 'allowed_themes', self::get_allowed_on_network() );
1116 return $network + self::get_allowed_on_site( $blog_id );
1120 * Returns array of stylesheet names of themes allowed on the network.
1125 * @return array Array of stylesheet names.
1127 public static function get_allowed_on_network() {
1128 static $allowed_themes;
1129 if ( ! isset( $allowed_themes ) )
1130 $allowed_themes = (array) get_site_option( 'allowedthemes' );
1131 return $allowed_themes;
1135 * Returns array of stylesheet names of themes allowed on the site.
1140 * @param int $blog_id Optional. Defaults to current blog.
1141 * @return array Array of stylesheet names.
1143 public static function get_allowed_on_site( $blog_id = null ) {
1144 static $allowed_themes = array();
1146 if ( ! $blog_id || ! is_multisite() )
1147 $blog_id = get_current_blog_id();
1149 if ( isset( $allowed_themes[ $blog_id ] ) )
1150 return $allowed_themes[ $blog_id ];
1152 $current = $blog_id == get_current_blog_id();
1155 $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' );
1157 switch_to_blog( $blog_id );
1158 $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' );
1159 restore_current_blog();
1162 // This is all super old MU back compat joy.
1163 // 'allowedthemes' keys things by stylesheet. 'allowed_themes' keyed things by name.
1164 if ( false === $allowed_themes[ $blog_id ] ) {
1166 $allowed_themes[ $blog_id ] = get_option( 'allowed_themes' );
1168 switch_to_blog( $blog_id );
1169 $allowed_themes[ $blog_id ] = get_option( 'allowed_themes' );
1170 restore_current_blog();
1173 if ( ! is_array( $allowed_themes[ $blog_id ] ) || empty( $allowed_themes[ $blog_id ] ) ) {
1174 $allowed_themes[ $blog_id ] = array();
1176 $converted = array();
1177 $themes = wp_get_themes();
1178 foreach ( $themes as $stylesheet => $theme_data ) {
1179 if ( isset( $allowed_themes[ $blog_id ][ $theme_data->get('Name') ] ) )
1180 $converted[ $stylesheet ] = true;
1182 $allowed_themes[ $blog_id ] = $converted;
1184 // Set the option so we never have to go through this pain again.
1185 if ( is_admin() && $allowed_themes[ $blog_id ] ) {
1187 update_option( 'allowedthemes', $allowed_themes[ $blog_id ] );
1188 delete_option( 'allowed_themes' );
1190 switch_to_blog( $blog_id );
1191 update_option( 'allowedthemes', $allowed_themes[ $blog_id ] );
1192 delete_option( 'allowed_themes' );
1193 restore_current_blog();
1198 return (array) $allowed_themes[ $blog_id ];
1202 * Sort themes by name.
1207 public static function sort_by_name( &$themes ) {
1208 if ( 0 === strpos( get_locale(), 'en_' ) ) {
1209 uasort( $themes, array( 'WP_Theme', '_name_sort' ) );
1211 uasort( $themes, array( 'WP_Theme', '_name_sort_i18n' ) );
1216 * Callback function for usort() to naturally sort themes by name.
1218 * Accesses the Name header directly from the class for maximum speed.
1219 * Would choke on HTML but we don't care enough to slow it down with strip_tags().
1224 private static function _name_sort( $a, $b ) {
1225 return strnatcasecmp( $a->headers['Name'], $b->headers['Name'] );
1229 * Name sort (with translation).
1234 private static function _name_sort_i18n( $a, $b ) {
1235 // Don't mark up; Do translate.
1236 return strnatcasecmp( $a->display( 'Name', false, true ), $b->display( 'Name', false, true ) );