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diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-widgets-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-widgets-controller.php
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@@ -0,0 +1,876 @@
+<?php
+/**
+ * REST API: WP_REST_Widgets_Controller class
+ *
+ * @package WordPress
+ * @subpackage REST_API
+ * @since 5.8.0
+ */
+
+/**
+ * Core class to access widgets via the REST API.
+ *
+ * @since 5.8.0
+ *
+ * @see WP_REST_Controller
+ */
+class WP_REST_Widgets_Controller extends WP_REST_Controller {
+
+ /**
+ * Tracks whether {@see retrieve_widgets()} has been called in the current request.
+ *
+ * @since 5.9.0
+ * @var bool
+ */
+ protected $widgets_retrieved = false;
+
+ /**
+ * Whether the controller supports batching.
+ *
+ * @since 5.9.0
+ * @var array
+ */
+ protected $allow_batch = array( 'v1' => true );
+
+ /**
+ * Widgets controller constructor.
+ *
+ * @since 5.8.0
+ */
+ public function __construct() {
+ $this->namespace = 'wp/v2';
+ $this->rest_base = 'widgets';
+ }
+
+ /**
+ * Registers the widget routes for the controller.
+ *
+ * @since 5.8.0
+ */
+ 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(),
+ ),
+ array(
+ 'methods' => WP_REST_Server::CREATABLE,
+ 'callback' => array( $this, 'create_item' ),
+ 'permission_callback' => array( $this, 'create_item_permissions_check' ),
+ 'args' => $this->get_endpoint_args_for_item_schema(),
+ ),
+ 'allow_batch' => $this->allow_batch,
+ 'schema' => array( $this, 'get_public_item_schema' ),
+ )
+ );
+
+ register_rest_route(
+ $this->namespace,
+ $this->rest_base . '/(?P<id>[\w\-]+)',
+ array(
+ 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' ) ),
+ ),
+ ),
+ array(
+ 'methods' => WP_REST_Server::EDITABLE,
+ 'callback' => array( $this, 'update_item' ),
+ 'permission_callback' => array( $this, 'update_item_permissions_check' ),
+ 'args' => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
+ ),
+ array(
+ 'methods' => WP_REST_Server::DELETABLE,
+ 'callback' => array( $this, 'delete_item' ),
+ 'permission_callback' => array( $this, 'delete_item_permissions_check' ),
+ 'args' => array(
+ 'force' => array(
+ 'description' => __( 'Whether to force removal of the widget, or move it to the inactive sidebar.' ),
+ 'type' => 'boolean',
+ ),
+ ),
+ ),
+ 'allow_batch' => $this->allow_batch,
+ 'schema' => array( $this, 'get_public_item_schema' ),
+ )
+ );
+ }
+
+ /**
+ * Checks if a given request has access to get widgets.
+ *
+ * @since 5.8.0
+ *
+ * @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( $request ) {
+ $this->retrieve_widgets();
+ if ( isset( $request['sidebar'] ) && $this->check_read_sidebar_permission( $request['sidebar'] ) ) {
+ return true;
+ }
+
+ foreach ( wp_get_sidebars_widgets() as $sidebar_id => $widget_ids ) {
+ if ( $this->check_read_sidebar_permission( $sidebar_id ) ) {
+ return true;
+ }
+ }
+
+ return $this->permissions_check( $request );
+ }
+
+ /**
+ * Retrieves a collection of widgets.
+ *
+ * @since 5.8.0
+ *
+ * @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 ) {
+ $this->retrieve_widgets();
+
+ $prepared = array();
+ $permissions_check = $this->permissions_check( $request );
+
+ foreach ( wp_get_sidebars_widgets() as $sidebar_id => $widget_ids ) {
+ if ( isset( $request['sidebar'] ) && $sidebar_id !== $request['sidebar'] ) {
+ continue;
+ }
+
+ if ( is_wp_error( $permissions_check ) && ! $this->check_read_sidebar_permission( $sidebar_id ) ) {
+ continue;
+ }
+
+ foreach ( $widget_ids as $widget_id ) {
+ $response = $this->prepare_item_for_response( compact( 'sidebar_id', 'widget_id' ), $request );
+
+ if ( ! is_wp_error( $response ) ) {
+ $prepared[] = $this->prepare_response_for_collection( $response );
+ }
+ }
+ }
+
+ return new WP_REST_Response( $prepared );
+ }
+
+ /**
+ * Checks if a given request has access to get a widget.
+ *
+ * @since 5.8.0
+ *
+ * @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_item_permissions_check( $request ) {
+ $this->retrieve_widgets();
+
+ $widget_id = $request['id'];
+ $sidebar_id = wp_find_widgets_sidebar( $widget_id );
+
+ if ( $sidebar_id && $this->check_read_sidebar_permission( $sidebar_id ) ) {
+ return true;
+ }
+
+ return $this->permissions_check( $request );
+ }
+
+ /**
+ * Checks if a sidebar can be read publicly.
+ *
+ * @since 5.9.0
+ *
+ * @param string $sidebar_id The sidebar ID.
+ * @return bool Whether the sidebar can be read.
+ */
+ protected function check_read_sidebar_permission( $sidebar_id ) {
+ $sidebar = wp_get_sidebar( $sidebar_id );
+
+ return ! empty( $sidebar['show_in_rest'] );
+ }
+
+ /**
+ * Gets an individual widget.
+ *
+ * @since 5.8.0
+ *
+ * @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_item( $request ) {
+ $this->retrieve_widgets();
+
+ $widget_id = $request['id'];
+ $sidebar_id = wp_find_widgets_sidebar( $widget_id );
+
+ if ( is_null( $sidebar_id ) ) {
+ return new WP_Error(
+ 'rest_widget_not_found',
+ __( 'No widget was found with that id.' ),
+ array( 'status' => 404 )
+ );
+ }
+
+ return $this->prepare_item_for_response( compact( 'widget_id', 'sidebar_id' ), $request );
+ }
+
+ /**
+ * Checks if a given request has access to create widgets.
+ *
+ * @since 5.8.0
+ *
+ * @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 create_item_permissions_check( $request ) {
+ return $this->permissions_check( $request );
+ }
+
+ /**
+ * Creates a widget.
+ *
+ * @since 5.8.0
+ *
+ * @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 create_item( $request ) {
+ $sidebar_id = $request['sidebar'];
+
+ $widget_id = $this->save_widget( $request, $sidebar_id );
+
+ if ( is_wp_error( $widget_id ) ) {
+ return $widget_id;
+ }
+
+ wp_assign_widget_to_sidebar( $widget_id, $sidebar_id );
+
+ $request['context'] = 'edit';
+
+ $response = $this->prepare_item_for_response( compact( 'sidebar_id', 'widget_id' ), $request );
+
+ if ( is_wp_error( $response ) ) {
+ return $response;
+ }
+
+ $response->set_status( 201 );
+
+ return $response;
+ }
+
+ /**
+ * Checks if a given request has access to update widgets.
+ *
+ * @since 5.8.0
+ *
+ * @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 update_item_permissions_check( $request ) {
+ return $this->permissions_check( $request );
+ }
+
+ /**
+ * Updates an existing widget.
+ *
+ * @since 5.8.0
+ *
+ * @global WP_Widget_Factory $wp_widget_factory
+ *
+ * @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 update_item( $request ) {
+ global $wp_widget_factory;
+
+ /*
+ * retrieve_widgets() contains logic to move "hidden" or "lost" widgets to the
+ * wp_inactive_widgets sidebar based on the contents of the $sidebars_widgets global.
+ *
+ * When batch requests are processed, this global is not properly updated by previous
+ * calls, resulting in widgets incorrectly being moved to the wp_inactive_widgets
+ * sidebar.
+ *
+ * See https://core.trac.wordpress.org/ticket/53657.
+ */
+ wp_get_sidebars_widgets();
+ $this->retrieve_widgets();
+
+ $widget_id = $request['id'];
+ $sidebar_id = wp_find_widgets_sidebar( $widget_id );
+
+ // Allow sidebar to be unset or missing when widget is not a WP_Widget.
+ $parsed_id = wp_parse_widget_id( $widget_id );
+ $widget_object = $wp_widget_factory->get_widget_object( $parsed_id['id_base'] );
+ if ( is_null( $sidebar_id ) && $widget_object ) {
+ return new WP_Error(
+ 'rest_widget_not_found',
+ __( 'No widget was found with that id.' ),
+ array( 'status' => 404 )
+ );
+ }
+
+ if (
+ $request->has_param( 'instance' ) ||
+ $request->has_param( 'form_data' )
+ ) {
+ $maybe_error = $this->save_widget( $request, $sidebar_id );
+ if ( is_wp_error( $maybe_error ) ) {
+ return $maybe_error;
+ }
+ }
+
+ if ( $request->has_param( 'sidebar' ) ) {
+ if ( $sidebar_id !== $request['sidebar'] ) {
+ $sidebar_id = $request['sidebar'];
+ wp_assign_widget_to_sidebar( $widget_id, $sidebar_id );
+ }
+ }
+
+ $request['context'] = 'edit';
+
+ return $this->prepare_item_for_response( compact( 'widget_id', 'sidebar_id' ), $request );
+ }
+
+ /**
+ * Checks if a given request has access to delete widgets.
+ *
+ * @since 5.8.0
+ *
+ * @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 delete_item_permissions_check( $request ) {
+ return $this->permissions_check( $request );
+ }
+
+ /**
+ * Deletes a widget.
+ *
+ * @since 5.8.0
+ *
+ * @global WP_Widget_Factory $wp_widget_factory
+ * @global array $wp_registered_widget_updates The registered widget update functions.
+ *
+ * @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 delete_item( $request ) {
+ global $wp_widget_factory, $wp_registered_widget_updates;
+
+ /*
+ * retrieve_widgets() contains logic to move "hidden" or "lost" widgets to the
+ * wp_inactive_widgets sidebar based on the contents of the $sidebars_widgets global.
+ *
+ * When batch requests are processed, this global is not properly updated by previous
+ * calls, resulting in widgets incorrectly being moved to the wp_inactive_widgets
+ * sidebar.
+ *
+ * See https://core.trac.wordpress.org/ticket/53657.
+ */
+ wp_get_sidebars_widgets();
+ $this->retrieve_widgets();
+
+ $widget_id = $request['id'];
+ $sidebar_id = wp_find_widgets_sidebar( $widget_id );
+
+ if ( is_null( $sidebar_id ) ) {
+ return new WP_Error(
+ 'rest_widget_not_found',
+ __( 'No widget was found with that id.' ),
+ array( 'status' => 404 )
+ );
+ }
+
+ $request['context'] = 'edit';
+
+ if ( $request['force'] ) {
+ $response = $this->prepare_item_for_response( compact( 'widget_id', 'sidebar_id' ), $request );
+
+ $parsed_id = wp_parse_widget_id( $widget_id );
+ $id_base = $parsed_id['id_base'];
+
+ $original_post = $_POST;
+ $original_request = $_REQUEST;
+
+ $_POST = array(
+ 'sidebar' => $sidebar_id,
+ "widget-$id_base" => array(),
+ 'the-widget-id' => $widget_id,
+ 'delete_widget' => '1',
+ );
+ $_REQUEST = $_POST;
+
+ /** This action is documented in wp-admin/widgets-form.php */
+ do_action( 'delete_widget', $widget_id, $sidebar_id, $id_base );
+
+ $callback = $wp_registered_widget_updates[ $id_base ]['callback'];
+ $params = $wp_registered_widget_updates[ $id_base ]['params'];
+
+ if ( is_callable( $callback ) ) {
+ ob_start();
+ call_user_func_array( $callback, $params );
+ ob_end_clean();
+ }
+
+ $_POST = $original_post;
+ $_REQUEST = $original_request;
+
+ $widget_object = $wp_widget_factory->get_widget_object( $id_base );
+
+ if ( $widget_object ) {
+ /*
+ * WP_Widget sets `updated = true` after an update to prevent more than one widget
+ * from being saved per request. This isn't what we want in the REST API, though,
+ * as we support batch requests.
+ */
+ $widget_object->updated = false;
+ }
+
+ wp_assign_widget_to_sidebar( $widget_id, '' );
+
+ $response->set_data(
+ array(
+ 'deleted' => true,
+ 'previous' => $response->get_data(),
+ )
+ );
+ } else {
+ wp_assign_widget_to_sidebar( $widget_id, 'wp_inactive_widgets' );
+
+ $response = $this->prepare_item_for_response(
+ array(
+ 'sidebar_id' => 'wp_inactive_widgets',
+ 'widget_id' => $widget_id,
+ ),
+ $request
+ );
+ }
+
+ /**
+ * Fires after a widget is deleted via the REST API.
+ *
+ * @since 5.8.0
+ *
+ * @param string $widget_id ID of the widget marked for deletion.
+ * @param string $sidebar_id ID of the sidebar the widget was deleted from.
+ * @param WP_REST_Response|WP_Error $response The response data, or WP_Error object on failure.
+ * @param WP_REST_Request $request The request sent to the API.
+ */
+ do_action( 'rest_delete_widget', $widget_id, $sidebar_id, $response, $request );
+
+ return $response;
+ }
+
+ /**
+ * Performs a permissions check for managing widgets.
+ *
+ * @since 5.8.0
+ *
+ * @param WP_REST_Request $request Full details about the request.
+ * @return true|WP_Error
+ */
+ protected function permissions_check( $request ) {
+ if ( ! current_user_can( 'edit_theme_options' ) ) {
+ return new WP_Error(
+ 'rest_cannot_manage_widgets',
+ __( 'Sorry, you are not allowed to manage widgets on this site.' ),
+ array(
+ 'status' => rest_authorization_required_code(),
+ )
+ );
+ }
+
+ return true;
+ }
+
+ /**
+ * Looks for "lost" widgets once per request.
+ *
+ * @since 5.9.0
+ *
+ * @see retrieve_widgets()
+ */
+ protected function retrieve_widgets() {
+ if ( ! $this->widgets_retrieved ) {
+ retrieve_widgets();
+ $this->widgets_retrieved = true;
+ }
+ }
+
+ /**
+ * Saves the widget in the request object.
+ *
+ * @since 5.8.0
+ *
+ * @global WP_Widget_Factory $wp_widget_factory
+ * @global array $wp_registered_widget_updates The registered widget update functions.
+ *
+ * @param WP_REST_Request $request Full details about the request.
+ * @param string $sidebar_id ID of the sidebar the widget belongs to.
+ * @return string|WP_Error The saved widget ID.
+ */
+ protected function save_widget( $request, $sidebar_id ) {
+ global $wp_widget_factory, $wp_registered_widget_updates;
+
+ require_once ABSPATH . 'wp-admin/includes/widgets.php'; // For next_widget_id_number().
+
+ if ( isset( $request['id'] ) ) {
+ // Saving an existing widget.
+ $id = $request['id'];
+ $parsed_id = wp_parse_widget_id( $id );
+ $id_base = $parsed_id['id_base'];
+ $number = isset( $parsed_id['number'] ) ? $parsed_id['number'] : null;
+ $widget_object = $wp_widget_factory->get_widget_object( $id_base );
+ $creating = false;
+ } elseif ( $request['id_base'] ) {
+ // Saving a new widget.
+ $id_base = $request['id_base'];
+ $widget_object = $wp_widget_factory->get_widget_object( $id_base );
+ $number = $widget_object ? next_widget_id_number( $id_base ) : null;
+ $id = $widget_object ? $id_base . '-' . $number : $id_base;
+ $creating = true;
+ } else {
+ return new WP_Error(
+ 'rest_invalid_widget',
+ __( 'Widget type (id_base) is required.' ),
+ array( 'status' => 400 )
+ );
+ }
+
+ if ( ! isset( $wp_registered_widget_updates[ $id_base ] ) ) {
+ return new WP_Error(
+ 'rest_invalid_widget',
+ __( 'The provided widget type (id_base) cannot be updated.' ),
+ array( 'status' => 400 )
+ );
+ }
+
+ if ( isset( $request['instance'] ) ) {
+ if ( ! $widget_object ) {
+ return new WP_Error(
+ 'rest_invalid_widget',
+ __( 'Cannot set instance on a widget that does not extend WP_Widget.' ),
+ array( 'status' => 400 )
+ );
+ }
+
+ if ( isset( $request['instance']['raw'] ) ) {
+ if ( empty( $widget_object->widget_options['show_instance_in_rest'] ) ) {
+ return new WP_Error(
+ 'rest_invalid_widget',
+ __( 'Widget type does not support raw instances.' ),
+ array( 'status' => 400 )
+ );
+ }
+ $instance = $request['instance']['raw'];
+ } elseif ( isset( $request['instance']['encoded'], $request['instance']['hash'] ) ) {
+ $serialized_instance = base64_decode( $request['instance']['encoded'] );
+ if ( ! hash_equals( wp_hash( $serialized_instance ), $request['instance']['hash'] ) ) {
+ return new WP_Error(
+ 'rest_invalid_widget',
+ __( 'The provided instance is malformed.' ),
+ array( 'status' => 400 )
+ );
+ }
+ $instance = unserialize( $serialized_instance );
+ } else {
+ return new WP_Error(
+ 'rest_invalid_widget',
+ __( 'The provided instance is invalid. Must contain raw OR encoded and hash.' ),
+ array( 'status' => 400 )
+ );
+ }
+
+ $form_data = array(
+ "widget-$id_base" => array(
+ $number => $instance,
+ ),
+ 'sidebar' => $sidebar_id,
+ );
+ } elseif ( isset( $request['form_data'] ) ) {
+ $form_data = $request['form_data'];
+ } else {
+ $form_data = array();
+ }
+
+ $original_post = $_POST;
+ $original_request = $_REQUEST;
+
+ foreach ( $form_data as $key => $value ) {
+ $slashed_value = wp_slash( $value );
+ $_POST[ $key ] = $slashed_value;
+ $_REQUEST[ $key ] = $slashed_value;
+ }
+
+ $callback = $wp_registered_widget_updates[ $id_base ]['callback'];
+ $params = $wp_registered_widget_updates[ $id_base ]['params'];
+
+ if ( is_callable( $callback ) ) {
+ ob_start();
+ call_user_func_array( $callback, $params );
+ ob_end_clean();
+ }
+
+ $_POST = $original_post;
+ $_REQUEST = $original_request;
+
+ if ( $widget_object ) {
+ // Register any multi-widget that the update callback just created.
+ $widget_object->_set( $number );
+ $widget_object->_register_one( $number );
+
+ /*
+ * WP_Widget sets `updated = true` after an update to prevent more than one widget
+ * from being saved per request. This isn't what we want in the REST API, though,
+ * as we support batch requests.
+ */
+ $widget_object->updated = false;
+ }
+
+ /**
+ * Fires after a widget is created or updated via the REST API.
+ *
+ * @since 5.8.0
+ *
+ * @param string $id ID of the widget being saved.
+ * @param string $sidebar_id ID of the sidebar containing the widget being saved.
+ * @param WP_REST_Request $request Request object.
+ * @param bool $creating True when creating a widget, false when updating.
+ */
+ do_action( 'rest_after_save_widget', $id, $sidebar_id, $request, $creating );
+
+ return $id;
+ }
+
+ /**
+ * Prepares the widget for the REST response.
+ *
+ * @since 5.8.0
+ *
+ * @global WP_Widget_Factory $wp_widget_factory
+ * @global array $wp_registered_widgets The registered widgets.
+ *
+ * @param array $item An array containing a widget_id and sidebar_id.
+ * @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 ) {
+ global $wp_widget_factory, $wp_registered_widgets;
+
+ $widget_id = $item['widget_id'];
+ $sidebar_id = $item['sidebar_id'];
+
+ if ( ! isset( $wp_registered_widgets[ $widget_id ] ) ) {
+ return new WP_Error(
+ 'rest_invalid_widget',
+ __( 'The requested widget is invalid.' ),
+ array( 'status' => 500 )
+ );
+ }
+
+ $widget = $wp_registered_widgets[ $widget_id ];
+ $parsed_id = wp_parse_widget_id( $widget_id );
+ $fields = $this->get_fields_for_response( $request );
+
+ $prepared = array(
+ 'id' => $widget_id,
+ 'id_base' => $parsed_id['id_base'],
+ 'sidebar' => $sidebar_id,
+ 'rendered' => '',
+ 'rendered_form' => null,
+ 'instance' => null,
+ );
+
+ if (
+ rest_is_field_included( 'rendered', $fields ) &&
+ 'wp_inactive_widgets' !== $sidebar_id
+ ) {
+ $prepared['rendered'] = trim( wp_render_widget( $widget_id, $sidebar_id ) );
+ }
+
+ if ( rest_is_field_included( 'rendered_form', $fields ) ) {
+ $rendered_form = wp_render_widget_control( $widget_id );
+ if ( ! is_null( $rendered_form ) ) {
+ $prepared['rendered_form'] = trim( $rendered_form );
+ }
+ }
+
+ if ( rest_is_field_included( 'instance', $fields ) ) {
+ $widget_object = $wp_widget_factory->get_widget_object( $parsed_id['id_base'] );
+ if ( $widget_object && isset( $parsed_id['number'] ) ) {
+ $all_instances = $widget_object->get_settings();
+ $instance = $all_instances[ $parsed_id['number'] ];
+ $serialized_instance = serialize( $instance );
+ $prepared['instance']['encoded'] = base64_encode( $serialized_instance );
+ $prepared['instance']['hash'] = wp_hash( $serialized_instance );
+
+ if ( ! empty( $widget_object->widget_options['show_instance_in_rest'] ) ) {
+ // Use new stdClass so that JSON result is {} and not [].
+ $prepared['instance']['raw'] = empty( $instance ) ? new stdClass() : $instance;
+ }
+ }
+ }
+
+ $context = ! empty( $request['context'] ) ? $request['context'] : 'view';
+ $prepared = $this->add_additional_fields_to_object( $prepared, $request );
+ $prepared = $this->filter_response_by_context( $prepared, $context );
+
+ $response = rest_ensure_response( $prepared );
+
+ if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {
+ $response->add_links( $this->prepare_links( $prepared ) );
+ }
+
+ /**
+ * Filters the REST API response for a widget.
+ *
+ * @since 5.8.0
+ *
+ * @param WP_REST_Response|WP_Error $response The response object, or WP_Error object on failure.
+ * @param array $widget The registered widget data.
+ * @param WP_REST_Request $request Request used to generate the response.
+ */
+ return apply_filters( 'rest_prepare_widget', $response, $widget, $request );
+ }
+
+ /**
+ * Prepares links for the widget.
+ *
+ * @since 5.8.0
+ *
+ * @param array $prepared Widget.
+ * @return array Links for the given widget.
+ */
+ protected function prepare_links( $prepared ) {
+ $id_base = ! empty( $prepared['id_base'] ) ? $prepared['id_base'] : $prepared['id'];
+
+ return array(
+ 'self' => array(
+ 'href' => rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $prepared['id'] ) ),
+ ),
+ 'collection' => array(
+ 'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
+ ),
+ 'about' => array(
+ 'href' => rest_url( sprintf( 'wp/v2/widget-types/%s', $id_base ) ),
+ 'embeddable' => true,
+ ),
+ 'https://api.w.org/sidebar' => array(
+ 'href' => rest_url( sprintf( 'wp/v2/sidebars/%s/', $prepared['sidebar'] ) ),
+ ),
+ );
+ }
+
+ /**
+ * Gets the list of collection params.
+ *
+ * @since 5.8.0
+ *
+ * @return array[]
+ */
+ public function get_collection_params() {
+ return array(
+ 'context' => $this->get_context_param( array( 'default' => 'view' ) ),
+ 'sidebar' => array(
+ 'description' => __( 'The sidebar to return widgets for.' ),
+ 'type' => 'string',
+ ),
+ );
+ }
+
+ /**
+ * Retrieves the widget's schema, conforming to JSON Schema.
+ *
+ * @since 5.8.0
+ *
+ * @return array Item schema data.
+ */
+ public function get_item_schema() {
+ if ( $this->schema ) {
+ return $this->add_additional_fields_schema( $this->schema );
+ }
+
+ $this->schema = array(
+ '$schema' => 'http://json-schema.org/draft-04/schema#',
+ 'title' => 'widget',
+ 'type' => 'object',
+ 'properties' => array(
+ 'id' => array(
+ 'description' => __( 'Unique identifier for the widget.' ),
+ 'type' => 'string',
+ 'context' => array( 'view', 'edit', 'embed' ),
+ ),
+ 'id_base' => array(
+ 'description' => __( 'The type of the widget. Corresponds to ID in widget-types endpoint.' ),
+ 'type' => 'string',
+ 'context' => array( 'view', 'edit', 'embed' ),
+ ),
+ 'sidebar' => array(
+ 'description' => __( 'The sidebar the widget belongs to.' ),
+ 'type' => 'string',
+ 'default' => 'wp_inactive_widgets',
+ 'required' => true,
+ 'context' => array( 'view', 'edit', 'embed' ),
+ ),
+ 'rendered' => array(
+ 'description' => __( 'HTML representation of the widget.' ),
+ 'type' => 'string',
+ 'context' => array( 'view', 'edit', 'embed' ),
+ 'readonly' => true,
+ ),
+ 'rendered_form' => array(
+ 'description' => __( 'HTML representation of the widget admin form.' ),
+ 'type' => 'string',
+ 'context' => array( 'edit' ),
+ 'readonly' => true,
+ ),
+ 'instance' => array(
+ 'description' => __( 'Instance settings of the widget, if supported.' ),
+ 'type' => 'object',
+ 'context' => array( 'edit' ),
+ 'default' => null,
+ 'properties' => array(
+ 'encoded' => array(
+ 'description' => __( 'Base64 encoded representation of the instance settings.' ),
+ 'type' => 'string',
+ 'context' => array( 'edit' ),
+ ),
+ 'hash' => array(
+ 'description' => __( 'Cryptographic hash of the instance settings.' ),
+ 'type' => 'string',
+ 'context' => array( 'edit' ),
+ ),
+ 'raw' => array(
+ 'description' => __( 'Unencoded instance settings, if supported.' ),
+ 'type' => 'object',
+ 'context' => array( 'edit' ),
+ ),
+ ),
+ ),
+ 'form_data' => array(
+ 'description' => __( 'URL-encoded form data from the widget admin form. Used to update a widget that does not support instance. Write only.' ),
+ 'type' => 'string',
+ 'context' => array(),
+ 'arg_options' => array(
+ 'sanitize_callback' => static function ( $form_data ) {
+ $array = array();
+ wp_parse_str( $form_data, $array );
+ return $array;
+ },
+ ),
+ ),
+ ),
+ );
+
+ return $this->add_additional_fields_schema( $this->schema );
+ }
+}