3 * WordPress Theme Administration API
6 * @subpackage Administration
14 * @global WP_Filesystem_Base $wp_filesystem Subclass
16 * @param string $stylesheet Stylesheet of the theme to delete
17 * @param string $redirect Redirect to page when complete.
18 * @return void|bool|WP_Error When void, echoes content.
20 function delete_theme($stylesheet, $redirect = '') {
21 global $wp_filesystem;
23 if ( empty($stylesheet) )
27 if ( empty( $redirect ) )
28 $redirect = wp_nonce_url('themes.php?action=delete&stylesheet=' . urlencode( $stylesheet ), 'delete-theme_' . $stylesheet);
29 if ( false === ($credentials = request_filesystem_credentials($redirect)) ) {
30 $data = ob_get_clean();
32 if ( ! empty($data) ){
33 include_once( ABSPATH . 'wp-admin/admin-header.php');
35 include( ABSPATH . 'wp-admin/admin-footer.php');
41 if ( ! WP_Filesystem($credentials) ) {
42 request_filesystem_credentials($redirect, '', true); // Failed to connect, Error and request again
43 $data = ob_get_clean();
45 if ( ! empty($data) ) {
46 include_once( ABSPATH . 'wp-admin/admin-header.php');
48 include( ABSPATH . 'wp-admin/admin-footer.php');
54 if ( ! is_object($wp_filesystem) )
55 return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
57 if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
58 return new WP_Error('fs_error', __('Filesystem error.'), $wp_filesystem->errors);
60 // Get the base plugin folder.
61 $themes_dir = $wp_filesystem->wp_themes_dir();
62 if ( empty( $themes_dir ) ) {
63 return new WP_Error( 'fs_no_themes_dir', __( 'Unable to locate WordPress theme directory.' ) );
66 $themes_dir = trailingslashit( $themes_dir );
67 $theme_dir = trailingslashit( $themes_dir . $stylesheet );
68 $deleted = $wp_filesystem->delete( $theme_dir, true );
71 return new WP_Error( 'could_not_remove_theme', sprintf( __( 'Could not fully remove the theme %s.' ), $stylesheet ) );
74 $theme_translations = wp_get_installed_translations( 'themes' );
76 // Remove language files, silently.
77 if ( ! empty( $theme_translations[ $stylesheet ] ) ) {
78 $translations = $theme_translations[ $stylesheet ];
80 foreach ( $translations as $translation => $data ) {
81 $wp_filesystem->delete( WP_LANG_DIR . '/themes/' . $stylesheet . '-' . $translation . '.po' );
82 $wp_filesystem->delete( WP_LANG_DIR . '/themes/' . $stylesheet . '-' . $translation . '.mo' );
86 // Force refresh of theme update information.
87 delete_site_transient( 'update_themes' );
93 * Get the Page Templates available in this theme
97 * @param WP_Post|null $post Optional. The post being edited, provided for context.
98 * @return array Key is the template name, value is the filename of the template
100 function get_page_templates( $post = null ) {
101 return array_flip( wp_get_theme()->get_page_templates( $post ) );
105 * Tidies a filename for url display by the theme editor.
110 * @param string $fullpath Full path to the theme file
111 * @param string $containingfolder Path of the theme parent folder
114 function _get_template_edit_filename($fullpath, $containingfolder) {
115 return str_replace(dirname(dirname( $containingfolder )) , '', $fullpath);
119 * Check if there is an update for a theme available.
121 * Will display link, if there is an update available.
124 * @see get_theme_update_available()
126 * @param WP_Theme $theme Theme data object.
128 function theme_update_available( $theme ) {
129 echo get_theme_update_available( $theme );
133 * Retrieve the update link if there is a theme update available.
135 * Will return a link if there is an update available.
139 * @staticvar object $themes_update
141 * @param WP_Theme $theme WP_Theme object.
142 * @return false|string HTML for the update link, or false if invalid info was passed.
144 function get_theme_update_available( $theme ) {
145 static $themes_update = null;
147 if ( !current_user_can('update_themes' ) )
150 if ( !isset($themes_update) )
151 $themes_update = get_site_transient('update_themes');
153 if ( ! ( $theme instanceof WP_Theme ) ) {
157 $stylesheet = $theme->get_stylesheet();
161 if ( isset($themes_update->response[ $stylesheet ]) ) {
162 $update = $themes_update->response[ $stylesheet ];
163 $theme_name = $theme->display('Name');
164 $details_url = add_query_arg(array('TB_iframe' => 'true', 'width' => 1024, 'height' => 800), $update['url']); //Theme browser inside WP? replace this, Also, theme preview JS will override this on the available list.
165 $update_url = wp_nonce_url( admin_url( 'update.php?action=upgrade-theme&theme=' . urlencode( $stylesheet ) ), 'upgrade-theme_' . $stylesheet );
166 $update_onclick = 'onclick="if ( confirm(\'' . esc_js( __("Updating this theme will lose any customizations you have made. 'Cancel' to stop, 'OK' to update.") ) . '\') ) {return true;}return false;"';
168 if ( !is_multisite() ) {
169 if ( ! current_user_can('update_themes') ) {
170 $html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a>.' ) . '</strong></p>',
171 $theme_name, esc_url( $details_url ), esc_attr( $theme['Name'] ), $update['new_version'] );
172 } elseif ( empty( $update['package'] ) ) {
173 $html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a>. <em>Automatic update is unavailable for this theme.</em>' ) . '</strong></p>',
174 $theme_name, esc_url( $details_url ), esc_attr( $theme['Name'] ), $update['new_version'] );
176 $html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a> or <a href="%5$s">update now</a>.' ) . '</strong></p>',
177 $theme_name, esc_url( $details_url ), esc_attr( $theme['Name'] ), $update['new_version'], $update_url, $update_onclick );
186 * Retrieve list of WordPress theme features (aka theme tags)
190 * @param bool $api Optional. Whether try to fetch tags from the WordPress.org API. Defaults to true.
191 * @return array Array of features keyed by category with translations keyed by slug.
193 function get_theme_feature_list( $api = true ) {
194 // Hard-coded list is used if api not accessible.
196 __( 'Colors' ) => array(
197 'black' => __( 'Black' ),
198 'blue' => __( 'Blue' ),
199 'brown' => __( 'Brown' ),
200 'gray' => __( 'Gray' ),
201 'green' => __( 'Green' ),
202 'orange' => __( 'Orange' ),
203 'pink' => __( 'Pink' ),
204 'purple' => __( 'Purple' ),
205 'red' => __( 'Red' ),
206 'silver' => __( 'Silver' ),
207 'tan' => __( 'Tan' ),
208 'white' => __( 'White' ),
209 'yellow' => __( 'Yellow' ),
210 'dark' => __( 'Dark' ),
211 'light' => __( 'Light' ),
214 __( 'Layout' ) => array(
215 'fixed-layout' => __( 'Fixed Layout' ),
216 'fluid-layout' => __( 'Fluid Layout' ),
217 'responsive-layout' => __( 'Responsive Layout' ),
218 'one-column' => __( 'One Column' ),
219 'two-columns' => __( 'Two Columns' ),
220 'three-columns' => __( 'Three Columns' ),
221 'four-columns' => __( 'Four Columns' ),
222 'left-sidebar' => __( 'Left Sidebar' ),
223 'right-sidebar' => __( 'Right Sidebar' ),
226 __( 'Features' ) => array(
227 'accessibility-ready' => __( 'Accessibility Ready' ),
228 'blavatar' => __( 'Blavatar' ),
229 'buddypress' => __( 'BuddyPress' ),
230 'custom-background' => __( 'Custom Background' ),
231 'custom-colors' => __( 'Custom Colors' ),
232 'custom-header' => __( 'Custom Header' ),
233 'custom-menu' => __( 'Custom Menu' ),
234 'editor-style' => __( 'Editor Style' ),
235 'featured-image-header' => __( 'Featured Image Header' ),
236 'featured-images' => __( 'Featured Images' ),
237 'flexible-header' => __( 'Flexible Header' ),
238 'front-page-post-form' => __( 'Front Page Posting' ),
239 'full-width-template' => __( 'Full Width Template' ),
240 'microformats' => __( 'Microformats' ),
241 'post-formats' => __( 'Post Formats' ),
242 'rtl-language-support' => __( 'RTL Language Support' ),
243 'sticky-post' => __( 'Sticky Post' ),
244 'theme-options' => __( 'Theme Options' ),
245 'threaded-comments' => __( 'Threaded Comments' ),
246 'translation-ready' => __( 'Translation Ready' ),
249 __( 'Subject' ) => array(
250 'holiday' => __( 'Holiday' ),
251 'photoblogging' => __( 'Photoblogging' ),
252 'seasonal' => __( 'Seasonal' ),
256 if ( ! $api || ! current_user_can( 'install_themes' ) )
259 if ( !$feature_list = get_site_transient( 'wporg_theme_feature_list' ) )
260 set_site_transient( 'wporg_theme_feature_list', array(), 3 * HOUR_IN_SECONDS );
262 if ( !$feature_list ) {
263 $feature_list = themes_api( 'feature_list', array() );
264 if ( is_wp_error( $feature_list ) )
268 if ( !$feature_list )
271 set_site_transient( 'wporg_theme_feature_list', $feature_list, 3 * HOUR_IN_SECONDS );
273 $category_translations = array(
274 'Colors' => __( 'Colors' ),
275 'Layout' => __( 'Layout' ),
276 'Features' => __( 'Features' ),
277 'Subject' => __( 'Subject' )
280 // Loop over the wporg canonical list and apply translations
281 $wporg_features = array();
282 foreach ( (array) $feature_list as $feature_category => $feature_items ) {
283 if ( isset($category_translations[$feature_category]) )
284 $feature_category = $category_translations[$feature_category];
285 $wporg_features[$feature_category] = array();
287 foreach ( $feature_items as $feature ) {
288 if ( isset($features[$feature_category][$feature]) )
289 $wporg_features[$feature_category][$feature] = $features[$feature_category][$feature];
291 $wporg_features[$feature_category][$feature] = $feature;
295 return $wporg_features;
299 * Retrieves theme installer pages from the WordPress.org Themes API.
301 * It is possible for a theme to override the Themes API result with three
302 * filters. Assume this is for themes, which can extend on the Theme Info to
303 * offer more choices. This is very powerful and must be used with care, when
304 * overriding the filters.
306 * The first filter, {@see 'themes_api_args'}, is for the args and gives the action
307 * as the second parameter. The hook for {@see 'themes_api_args'} must ensure that
308 * an object is returned.
310 * The second filter, {@see 'themes_api'}, allows a plugin to override the WordPress.org
311 * Theme API entirely. If `$action` is 'query_themes', 'theme_information', or 'feature_list',
312 * an object MUST be passed. If `$action` is 'hot_tags`, an array should be passed.
314 * Finally, the third filter, {@see 'themes_api_result'}, makes it possible to filter the
315 * response object or array, depending on the `$action` type.
317 * Supported arguments per action:
319 * | Argument Name | 'query_themes' | 'theme_information' | 'hot_tags' | 'feature_list' |
320 * | -------------------| :------------: | :-----------------: | :--------: | :--------------: |
321 * | `$slug` | No | Yes | No | No |
322 * | `$per_page` | Yes | No | No | No |
323 * | `$page` | Yes | No | No | No |
324 * | `$number` | No | No | Yes | No |
325 * | `$search` | Yes | No | No | No |
326 * | `$tag` | Yes | No | No | No |
327 * | `$author` | Yes | No | No | No |
328 * | `$user` | Yes | No | No | No |
329 * | `$browse` | Yes | No | No | No |
330 * | `$locale` | Yes | Yes | No | No |
331 * | `$fields` | Yes | Yes | No | No |
335 * @param string $action API action to perform: 'query_themes', 'theme_information',
336 * 'hot_tags' or 'feature_list'.
337 * @param array|object $args {
338 * Optional. Array or object of arguments to serialize for the Plugin Info API.
340 * @type string $slug The plugin slug. Default empty.
341 * @type int $per_page Number of themes per page. Default 24.
342 * @type int $page Number of current page. Default 1.
343 * @type int $number Number of tags to be queried.
344 * @type string $search A search term. Default empty.
345 * @type string $tag Tag to filter themes. Default empty.
346 * @type string $author Username of an author to filter themes. Default empty.
347 * @type string $user Username to query for their favorites. Default empty.
348 * @type string $browse Browse view: 'featured', 'popular', 'updated', 'favorites'.
349 * @type string $locale Locale to provide context-sensitive results. Default is the value of get_locale().
350 * @type array $fields {
351 * Array of fields which should or should not be returned.
353 * @type bool $description Whether to return the theme full description. Default false.
354 * @type bool $sections Whether to return the theme readme sections: description, installation,
355 * FAQ, screenshots, other notes, and changelog. Default false.
356 * @type bool $rating Whether to return the rating in percent and total number of ratings.
358 * @type bool $ratings Whether to return the number of rating for each star (1-5). Default false.
359 * @type bool $downloaded Whether to return the download count. Default false.
360 * @type bool $downloadlink Whether to return the download link for the package. Default false.
361 * @type bool $last_updated Whether to return the date of the last update. Default false.
362 * @type bool $tags Whether to return the assigned tags. Default false.
363 * @type bool $homepage Whether to return the theme homepage link. Default false.
364 * @type bool $screenshots Whether to return the screenshots. Default false.
365 * @type int $screenshot_count Number of screenshots to return. Default 1.
366 * @type bool $screenshot_url Whether to return the URL of the first screenshot. Default false.
367 * @type bool $photon_screenshots Whether to return the screenshots via Photon. Default false.
368 * @type bool $template Whether to return the slug of the parent theme. Default false.
369 * @type bool $parent Whether to return the slug, name and homepage of the parent theme. Default false.
370 * @type bool $versions Whether to return the list of all available versions. Default false.
371 * @type bool $theme_url Whether to return theme's URL. Default false.
372 * @type bool $extended_author Whether to return nicename or nicename and display name. Default false.
375 * @return object|array|WP_Error Response object or array on success, WP_Error on failure. See the
376 * {@link https://developer.wordpress.org/reference/functions/themes_api/ function reference article}
377 * for more information on the make-up of possible return objects depending on the value of `$action`.
379 function themes_api( $action, $args = array() ) {
381 if ( is_array( $args ) ) {
382 $args = (object) $args;
385 if ( ! isset( $args->per_page ) ) {
386 $args->per_page = 24;
389 if ( ! isset( $args->locale ) ) {
390 $args->locale = get_locale();
394 * Filter arguments used to query for installer pages from the WordPress.org Themes API.
396 * Important: An object MUST be returned to this filter.
400 * @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
401 * @param string $action Requested action. Likely values are 'theme_information',
402 * 'feature_list', or 'query_themes'.
404 $args = apply_filters( 'themes_api_args', $args, $action );
407 * Filter whether to override the WordPress.org Themes API.
409 * Passing a non-false value will effectively short-circuit the WordPress.org API request.
411 * If `$action` is 'query_themes', 'theme_information', or 'feature_list', an object MUST
412 * be passed. If `$action` is 'hot_tags`, an array should be passed.
416 * @param false|object|array $override Whether to override the WordPress.org Themes API. Default false.
417 * @param string $action Requested action. Likely values are 'theme_information',
418 * 'feature_list', or 'query_themes'.
419 * @param object $args Arguments used to query for installer pages from the Themes API.
421 $res = apply_filters( 'themes_api', false, $action, $args );
424 $url = $http_url = 'http://api.wordpress.org/themes/info/1.0/';
425 if ( $ssl = wp_http_supports( array( 'ssl' ) ) )
426 $url = set_url_scheme( $url, 'https' );
431 'request' => serialize( $args )
434 $request = wp_remote_post( $url, $http_args );
436 if ( $ssl && is_wp_error( $request ) ) {
437 if ( ! defined( 'DOING_AJAX' ) || ! DOING_AJAX ) {
438 trigger_error( __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ), headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE );
440 $request = wp_remote_post( $http_url, $http_args );
443 if ( is_wp_error($request) ) {
444 $res = new WP_Error('themes_api_failed', __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ), $request->get_error_message() );
446 $res = maybe_unserialize( wp_remote_retrieve_body( $request ) );
447 if ( ! is_object( $res ) && ! is_array( $res ) )
448 $res = new WP_Error('themes_api_failed', __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ), wp_remote_retrieve_body( $request ) );
453 * Filter the returned WordPress.org Themes API response.
457 * @param array|object $res WordPress.org Themes API response.
458 * @param string $action Requested action. Likely values are 'theme_information',
459 * 'feature_list', or 'query_themes'.
460 * @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
462 return apply_filters( 'themes_api_result', $res, $action, $args );
466 * Prepare themes for JavaScript.
470 * @param array $themes Optional. Array of WP_Theme objects to prepare.
471 * Defaults to all allowed themes.
473 * @return array An associative array of theme data, sorted by name.
475 function wp_prepare_themes_for_js( $themes = null ) {
476 $current_theme = get_stylesheet();
479 * Filter theme data before it is prepared for JavaScript.
481 * Passing a non-empty array will result in wp_prepare_themes_for_js() returning
482 * early with that value instead.
486 * @param array $prepared_themes An associative array of theme data. Default empty array.
487 * @param null|array $themes An array of WP_Theme objects to prepare, if any.
488 * @param string $current_theme The current theme slug.
490 $prepared_themes = (array) apply_filters( 'pre_prepare_themes_for_js', array(), $themes, $current_theme );
492 if ( ! empty( $prepared_themes ) ) {
493 return $prepared_themes;
496 // Make sure the current theme is listed first.
497 $prepared_themes[ $current_theme ] = array();
499 if ( null === $themes ) {
500 $themes = wp_get_themes( array( 'allowed' => true ) );
501 if ( ! isset( $themes[ $current_theme ] ) ) {
502 $themes[ $current_theme ] = wp_get_theme();
507 if ( current_user_can( 'update_themes' ) ) {
508 $updates_transient = get_site_transient( 'update_themes' );
509 if ( isset( $updates_transient->response ) ) {
510 $updates = $updates_transient->response;
514 WP_Theme::sort_by_name( $themes );
518 foreach ( $themes as $theme ) {
519 $slug = $theme->get_stylesheet();
520 $encoded_slug = urlencode( $slug );
523 if ( $theme->parent() ) {
524 $parent = $theme->parent()->display( 'Name' );
525 $parents[ $slug ] = $theme->parent()->get_stylesheet();
528 $customize_action = null;
529 if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
530 $customize_action = esc_url( add_query_arg(
532 'return' => urlencode( esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ),
534 wp_customize_url( $slug )
538 $prepared_themes[ $slug ] = array(
540 'name' => $theme->display( 'Name' ),
541 'screenshot' => array( $theme->get_screenshot() ), // @todo multiple
542 'description' => $theme->display( 'Description' ),
543 'author' => $theme->display( 'Author', false, true ),
544 'authorAndUri' => $theme->display( 'Author' ),
545 'version' => $theme->display( 'Version' ),
546 'tags' => $theme->display( 'Tags' ),
548 'active' => $slug === $current_theme,
549 'hasUpdate' => isset( $updates[ $slug ] ),
550 'update' => get_theme_update_available( $theme ),
552 'activate' => current_user_can( 'switch_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=activate&stylesheet=' . $encoded_slug ), 'switch-theme_' . $slug ) : null,
553 'customize' => $customize_action,
554 'delete' => current_user_can( 'delete_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=delete&stylesheet=' . $encoded_slug ), 'delete-theme_' . $slug ) : null,
559 // Remove 'delete' action if theme has an active child
560 if ( ! empty( $parents ) && array_key_exists( $current_theme, $parents ) ) {
561 unset( $prepared_themes[ $parents[ $current_theme ] ]['actions']['delete'] );
565 * Filter the themes prepared for JavaScript, for themes.php.
567 * Could be useful for changing the order, which is by name by default.
571 * @param array $prepared_themes Array of themes.
573 $prepared_themes = apply_filters( 'wp_prepare_themes_for_js', $prepared_themes );
574 $prepared_themes = array_values( $prepared_themes );
575 return array_filter( $prepared_themes );
579 * Print JS templates for the theme-browsing UI in the Customizer.
583 function customize_themes_print_templates() {
584 $preview_url = esc_url( add_query_arg( 'theme', '__THEME__' ) ); // Token because esc_url() strips curly braces.
585 $preview_url = str_replace( '__THEME__', '{{ data.id }}', $preview_url );
587 <script type="text/html" id="tmpl-customize-themes-details-view">
588 <div class="theme-backdrop"></div>
589 <div class="theme-wrap">
590 <div class="theme-header">
591 <button type="button" class="left dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show previous theme' ); ?></span></button>
592 <button type="button" class="right dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show next theme' ); ?></span></button>
593 <button type="button" class="close dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Close details dialog' ); ?></span></button>
595 <div class="theme-about">
596 <div class="theme-screenshots">
597 <# if ( data.screenshot[0] ) { #>
598 <div class="screenshot"><img src="{{ data.screenshot[0] }}" alt="" /></div>
600 <div class="screenshot blank"></div>
604 <div class="theme-info">
605 <# if ( data.active ) { #>
606 <span class="current-label"><?php _e( 'Current Theme' ); ?></span>
608 <h2 class="theme-name">{{{ data.name }}}<span class="theme-version"><?php printf( __( 'Version: %s' ), '{{ data.version }}' ); ?></span></h2>
609 <h3 class="theme-author"><?php printf( __( 'By %s' ), '{{{ data.authorAndUri }}}' ); ?></h3>
610 <p class="theme-description">{{{ data.description }}}</p>
612 <# if ( data.parent ) { #>
613 <p class="parent-theme"><?php printf( __( 'This is a child theme of %s.' ), '<strong>{{{ data.parent }}}</strong>' ); ?></p>
616 <# if ( data.tags ) { #>
617 <p class="theme-tags"><span><?php _e( 'Tags:' ); ?></span> {{ data.tags }}</p>
622 <# if ( ! data.active ) { #>
623 <div class="theme-actions">
624 <div class="inactive-theme">
625 <a href="<?php echo $preview_url; ?>" target="_top" class="button button-primary"><?php _e( 'Live Preview' ); ?></a>