+ /**
+ * Filters arguments used to query for installer pages from the WordPress.org Themes API.
+ *
+ * Important: An object MUST be returned to this filter.
+ *
+ * @since 2.8.0
+ *
+ * @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
+ * @param string $action Requested action. Likely values are 'theme_information',
+ * 'feature_list', or 'query_themes'.
+ */
+ $args = apply_filters( 'themes_api_args', $args, $action );
+
+ /**
+ * Filters whether to override the WordPress.org Themes API.
+ *
+ * Passing a non-false value will effectively short-circuit the WordPress.org API request.
+ *
+ * If `$action` is 'query_themes', 'theme_information', or 'feature_list', an object MUST
+ * be passed. If `$action` is 'hot_tags', an array should be passed.
+ *
+ * @since 2.8.0
+ *
+ * @param false|object|array $override Whether to override the WordPress.org Themes API. Default false.
+ * @param string $action Requested action. Likely values are 'theme_information',
+ * 'feature_list', or 'query_themes'.
+ * @param object $args Arguments used to query for installer pages from the Themes API.
+ */
+ $res = apply_filters( 'themes_api', false, $action, $args );
+
+ if ( ! $res ) {
+ $url = $http_url = 'http://api.wordpress.org/themes/info/1.0/';
+ if ( $ssl = wp_http_supports( array( 'ssl' ) ) )
+ $url = set_url_scheme( $url, 'https' );
+
+ $http_args = array(
+ 'body' => array(
+ 'action' => $action,
+ 'request' => serialize( $args )
+ )
+ );
+ $request = wp_remote_post( $url, $http_args );
+
+ if ( $ssl && is_wp_error( $request ) ) {
+ if ( ! wp_doing_ajax() ) {
+ trigger_error(
+ sprintf(
+ /* translators: %s: support forums URL */
+ __( '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="%s">support forums</a>.' ),
+ __( 'https://wordpress.org/support/' )
+ ) . ' ' . __( '(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
+ );
+ }
+ $request = wp_remote_post( $http_url, $http_args );
+ }
+
+ if ( is_wp_error($request) ) {
+ $res = new WP_Error( 'themes_api_failed',
+ sprintf(
+ /* translators: %s: support forums URL */
+ __( '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="%s">support forums</a>.' ),
+ __( 'https://wordpress.org/support/' )
+ ),
+ $request->get_error_message()
+ );
+ } else {
+ $res = maybe_unserialize( wp_remote_retrieve_body( $request ) );
+ if ( ! is_object( $res ) && ! is_array( $res ) ) {
+ $res = new WP_Error( 'themes_api_failed',
+ sprintf(
+ /* translators: %s: support forums URL */
+ __( '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="%s">support forums</a>.' ),
+ __( 'https://wordpress.org/support/' )
+ ),
+ wp_remote_retrieve_body( $request )
+ );
+ }
+ }
+ }
+
+ /**
+ * Filters the returned WordPress.org Themes API response.
+ *
+ * @since 2.8.0
+ *
+ * @param array|object|WP_Error $res WordPress.org Themes API response.
+ * @param string $action Requested action. Likely values are 'theme_information',
+ * 'feature_list', or 'query_themes'.
+ * @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
+ */
+ return apply_filters( 'themes_api_result', $res, $action, $args );
+}
+
+/**
+ * Prepare themes for JavaScript.
+ *
+ * @since 3.8.0
+ *
+ * @param array $themes Optional. Array of WP_Theme objects to prepare.
+ * Defaults to all allowed themes.
+ *
+ * @return array An associative array of theme data, sorted by name.
+ */
+function wp_prepare_themes_for_js( $themes = null ) {
+ $current_theme = get_stylesheet();
+
+ /**
+ * Filters theme data before it is prepared for JavaScript.
+ *
+ * Passing a non-empty array will result in wp_prepare_themes_for_js() returning
+ * early with that value instead.
+ *
+ * @since 4.2.0
+ *
+ * @param array $prepared_themes An associative array of theme data. Default empty array.
+ * @param null|array $themes An array of WP_Theme objects to prepare, if any.
+ * @param string $current_theme The current theme slug.
+ */
+ $prepared_themes = (array) apply_filters( 'pre_prepare_themes_for_js', array(), $themes, $current_theme );
+
+ if ( ! empty( $prepared_themes ) ) {
+ return $prepared_themes;
+ }
+
+ // Make sure the current theme is listed first.
+ $prepared_themes[ $current_theme ] = array();
+
+ if ( null === $themes ) {
+ $themes = wp_get_themes( array( 'allowed' => true ) );
+ if ( ! isset( $themes[ $current_theme ] ) ) {
+ $themes[ $current_theme ] = wp_get_theme();
+ }
+ }
+
+ $updates = array();
+ if ( current_user_can( 'update_themes' ) ) {
+ $updates_transient = get_site_transient( 'update_themes' );
+ if ( isset( $updates_transient->response ) ) {
+ $updates = $updates_transient->response;
+ }
+ }
+
+ WP_Theme::sort_by_name( $themes );
+
+ $parents = array();
+
+ foreach ( $themes as $theme ) {
+ $slug = $theme->get_stylesheet();
+ $encoded_slug = urlencode( $slug );
+
+ $parent = false;
+ if ( $theme->parent() ) {
+ $parent = $theme->parent()->display( 'Name' );
+ $parents[ $slug ] = $theme->parent()->get_stylesheet();
+ }
+
+ $customize_action = null;
+ if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
+ $customize_action = esc_url( add_query_arg(
+ array(
+ 'return' => urlencode( esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ),
+ ),
+ wp_customize_url( $slug )
+ ) );
+ }
+
+ $prepared_themes[ $slug ] = array(
+ 'id' => $slug,
+ 'name' => $theme->display( 'Name' ),
+ 'screenshot' => array( $theme->get_screenshot() ), // @todo multiple
+ 'description' => $theme->display( 'Description' ),
+ 'author' => $theme->display( 'Author', false, true ),
+ 'authorAndUri' => $theme->display( 'Author' ),
+ 'version' => $theme->display( 'Version' ),
+ 'tags' => $theme->display( 'Tags' ),
+ 'parent' => $parent,
+ 'active' => $slug === $current_theme,
+ 'hasUpdate' => isset( $updates[ $slug ] ),
+ 'hasPackage' => isset( $updates[ $slug ] ) && ! empty( $updates[ $slug ][ 'package' ] ),
+ 'update' => get_theme_update_available( $theme ),
+ 'actions' => array(
+ 'activate' => current_user_can( 'switch_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=activate&stylesheet=' . $encoded_slug ), 'switch-theme_' . $slug ) : null,
+ 'customize' => $customize_action,
+ 'delete' => current_user_can( 'delete_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=delete&stylesheet=' . $encoded_slug ), 'delete-theme_' . $slug ) : null,
+ ),
+ );
+ }