<?php
/**
* REST API: WP_REST_Icons_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 7.0.0
*/
/**
* Controller which provides a REST endpoint for the editor to read registered
* icons. For the time being, only core icons are available, which are defined
* in a single manifest file (wp-includes/assets/icon-library-manifest.php).
* Icons are comprised of their SVG source, a name and a translatable label.
*
* @since 7.0.0
*
* @see WP_REST_Controller
*/
class WP_REST_Icons_Controller extends WP_REST_Controller {
/**
* Constructs the controller.
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'icons';
}
/**
* Registers the routes for the objects of the controller.
*/
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_public_item_schema' ),
)
);
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/(?P<name>[a-z][a-z0-9-]*/[a-z][a-z0-9-]*)',
array(
'args' => array(
'name' => array(
'description' => __( 'Icon name.' ),
'type' => 'string',
),
),
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => array( $this, 'get_item_permissions_check' ),
'args' => array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Checks whether a given request has permission to read icons.
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function get_items_permissions_check(
// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
$request
) {
if ( current_user_can( 'edit_posts' ) ) {
return true;
}
foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {
if ( current_user_can( $post_type->cap->edit_posts ) ) {
return true;
}
}
return new WP_Error(
'rest_cannot_view',
__( 'Sorry, you are not allowed to view the registered icons.' ),
array( 'status' => rest_authorization_required_code() )
);
}
/**
* Checks if a given request has access to read a specific icon.
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access for the item, WP_Error object otherwise.
*/
public function get_item_permissions_check( $request ) {
$check = $this->get_items_permissions_check( $request );
if ( is_wp_error( $check ) ) {
return $check;
}
return true;
}
/**
* Retrieves all icons.
*
* @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 ) {
$response = array();
$search = $request->get_param( 'search' );
$icons = WP_Icons_Registry::get_instance()->get_registered_icons( $search );
foreach ( $icons as $icon ) {
$prepared_icon = $this->prepare_item_for_response( $icon, $request );
$response[] = $this->prepare_response_for_collection( $prepared_icon );
}
return rest_ensure_response( $response );
}
/**
* Retrieves a specific icon.
*
* @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_item( $request ) {
$icon = $this->get_icon( $request['name'] );
if ( is_wp_error( $icon ) ) {
return $icon;
}
$data = $this->prepare_item_for_response( $icon, $request );
return rest_ensure_response( $data );
}
/**
* Retrieves a specific icon from the registry.
*
* @param string $name Icon name.
* @return array|WP_Error Icon data on success, or WP_Error object on failure.
*/
public function get_icon( $name ) {
$registry = WP_Icons_Registry::get_instance();
$icon = $registry->get_registered_icon( $name );
if ( null === $icon ) {
return new WP_Error(
'rest_icon_not_found',
sprintf(
// translators: %s is the name of any user-provided name
__( 'Icon not found: "%s".' ),
$name
),
array( 'status' => 404 )
);
}
return $icon;
}
/**
* Prepare a raw icon before it gets output in a REST API response.
*
* @param array $item Raw icon as registered, before any changes.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function prepare_item_for_response( $item, $request ) {
$fields = $this->get_fields_for_response( $request );
$keys = array(
'name' => 'name',
'label' => 'label',
'content' => 'content',
);
$data = array();
foreach ( $keys as $item_key => $rest_key ) {
if ( isset( $item[ $item_key ] ) && rest_is_field_included( $rest_key, $fields ) ) {
$data[ $rest_key ] = $item[ $item_key ];
}
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
return rest_ensure_response( $data );
}
/**
* Retrieves the icon schema, conforming to JSON Schema.
*
* @return array Item schema data.
*/
public function get_item_schema() {
if ( $this->schema ) {
return $this->add_additional_fields_schema( $this->schema );
}
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => 'icon',
'type' => 'object',
'properties' => array(
'name' => array(
'description' => __( 'The icon name.' ),
'type' => 'string',
'readonly' => true,
'context' => array( 'view', 'edit', 'embed' ),
),
'label' => array(
'description' => __( 'The icon label.' ),
'type' => 'string',
'readonly' => true,
'context' => array( 'view', 'edit', 'embed' ),
),
'content' => array(
'description' => __( 'The icon content (SVG markup).' ),
'type' => 'string',
'readonly' => true,
'context' => array( 'view', 'edit', 'embed' ),
),
),
);
$this->schema = $schema;
return $this->add_additional_fields_schema( $this->schema );
}
/**
* Retrieves the query params for the icons collection.
*
* @return array Collection parameters.
*/
public function get_collection_params() {
$query_params = parent::get_collection_params();
$query_params['context']['default'] = 'view';
return $query_params;
}
}