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<?php
/**
* REST API: WP_REST_Themes_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 5.0.0
*/
/**
* Core class used to manage themes via the REST API.
*
* @since 5.0.0
*
* @see WP_REST_Controller
*/
class WP_REST_Themes_Controller extends WP_REST_Controller {
/**
* Constructor.
*
* @since 5.0.0
*/
public function __construct() {
$this->namespace = 'core';
$this->rest_base = 'themes';
}
/**
* Registers the routes for the objects of the controller.
*
* @since 5.0.0
*
* @see register_rest_route()
*/
public function register_routes() {
register_rest_route(
$this->namespace,
'/' . $this->rest_base,
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_items' ),
'permission_callback' => array( $this, 'get_items_permissions_check' ),
'args' => $this->get_collection_params(),
),
'schema' => array( $this, 'get_item_schema' ),
)
);
}
/**
* Checks if a given request has access to read the theme.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object.
*/
public function get_items_permissions_check( $request ) {
if ( ! is_user_logged_in() || ! current_user_can( 'edit_posts' ) ) {
return new WP_Error( 'rest_user_cannot_view', __( 'Sorry, you are not allowed to view themes.' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Retrieves a collection of themes.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_items( $request ) {
// Retrieve the list of registered collection query parameters.
$registered = $this->get_collection_params();
$themes = array();
if ( isset( $registered['status'], $request['status'] ) && in_array( 'active', $request['status'], true ) ) {
$active_theme = wp_get_theme();
$active_theme = $this->prepare_item_for_response( $active_theme, $request );
$themes[] = $this->prepare_response_for_collection( $active_theme );
}
$response = rest_ensure_response( $themes );
$response->header( 'X-WP-Total', count( $themes ) );
$response->header( 'X-WP-TotalPages', count( $themes ) );
return $response;
}
/**
* Prepares a single theme output for response.
*
* @since 5.0.0
*
* @param WP_Theme $theme Theme object.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $theme, $request ) {
$data = array();
$fields = $this->get_fields_for_response( $request );
if ( in_array( 'theme_supports', $fields, true ) ) {
$formats = get_theme_support( 'post-formats' );
$formats = is_array( $formats ) ? array_values( $formats[0] ) : array();
$formats = array_merge( array( 'standard' ), $formats );
$data['theme_supports']['formats'] = $formats;
$data['theme_supports']['post-thumbnails'] = false;
$data['theme_supports']['responsive-embeds'] = (bool) get_theme_support( 'responsive-embeds' );
$post_thumbnails = get_theme_support( 'post-thumbnails' );
if ( $post_thumbnails ) {
// $post_thumbnails can contain a nested array of post types.
// e.g. array( array( 'post', 'page' ) ).
$data['theme_supports']['post-thumbnails'] = is_array( $post_thumbnails ) ? $post_thumbnails[0] : true;
}
}
$data = $this->add_additional_fields_to_object( $data, $request );
// Wrap the data in a response object.
$response = rest_ensure_response( $data );
/**
* Filters theme data returned from the REST API.
*
* @since 5.0.0
*
* @param WP_REST_Response $response The response object.
* @param WP_Theme $theme Theme object used to create response.
* @param WP_REST_Request $request Request object.
*/
return apply_filters( 'rest_prepare_theme', $response, $theme, $request );
}
/**
* Retrieves the theme's schema, conforming to JSON Schema.
*
* @since 5.0.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => 'theme',
'type' => 'object',
'properties' => array(
'theme_supports' => array(
'description' => __( 'Features supported by this theme.' ),
'type' => 'array',
'readonly' => true,
'properties' => array(
'formats' => array(
'description' => __( 'Post formats supported.' ),
'type' => 'array',
'readonly' => true,
),
'post-thumbnails' => array(
'description' => __( 'Whether the theme supports post thumbnails.' ),
'type' => array( 'array', 'bool' ),
'readonly' => true,
),
'responsive-embeds' => array(
'description' => __( 'Whether the theme supports responsive embedded content.' ),
'type' => 'bool',
'readonly' => true,
),
),
),
),
);
return $this->add_additional_fields_schema( $schema );
}
/**
* Retrieves the search params for the themes collection.
*
* @since 5.0.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
$query_params = parent::get_collection_params();
$query_params['status'] = array(
'description' => __( 'Limit result set to themes assigned one or more statuses.' ),
'type' => 'array',
'items' => array(
'enum' => array( 'active' ),
'type' => 'string',
),
'required' => true,
'sanitize_callback' => array( $this, 'sanitize_theme_status' ),
);
/**
* Filter collection parameters for the themes controller.
*
* @since 5.0.0
*
* @param array $query_params JSON Schema-formatted collection parameters.
*/
return apply_filters( 'rest_themes_collection_params', $query_params );
}
/**
* Sanitizes and validates the list of theme status.
*
* @since 5.0.0
*
* @param string|array $statuses One or more theme statuses.
* @param WP_REST_Request $request Full details about the request.
* @param string $parameter Additional parameter to pass to validation.
* @return array|WP_Error A list of valid statuses, otherwise WP_Error object.
*/
public function sanitize_theme_status( $statuses, $request, $parameter ) {
$statuses = wp_parse_slug_list( $statuses );
foreach ( $statuses as $status ) {
$result = rest_validate_request_arg( $status, $request, $parameter );
if ( is_wp_error( $result ) ) {
return $result;
}
}
return $statuses;
}
}
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