<?php
/**
* REST API: WP_REST_Font_Families_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 6.5.0
*/
/**
* Font Families Controller class.
*
* @since 6.5.0
*/
class WP_REST_Font_Families_Controller extends WP_REST_Posts_Controller {
/**
* The latest version of theme.json schema supported by the controller.
*
* @since 6.5.0
* @var int
*/
const LATEST_THEME_JSON_VERSION_SUPPORTED = 3;
/**
* Whether the controller supports batching.
*
* @since 6.5.0
* @var false
*/
protected $allow_batch = false;
/**
* Checks if a given request has access to font families.
*
* @since 6.5.0
*
* @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 ) {
$post_type = get_post_type_object( $this->post_type );
if ( ! current_user_can( $post_type->cap->read ) ) {
return new WP_Error(
'rest_cannot_read',
__( 'Sorry, you are not allowed to access font families.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Checks if a given request has access to a font family.
*
* @since 6.5.0
*
* @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 ) {
$post = $this->get_post( $request['id'] );
if ( is_wp_error( $post ) ) {
return $post;
}
if ( ! current_user_can( 'read_post', $post->ID ) ) {
return new WP_Error(
'rest_cannot_read',
__( 'Sorry, you are not allowed to access this font family.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Validates settings when creating or updating a font family.
*
* @since 6.5.0
*
* @param string $value Encoded JSON string of font family settings.
* @param WP_REST_Request $request Request object.
* @return true|WP_Error True if the settings are valid, otherwise a WP_Error object.
*/
public function validate_font_family_settings( $value, $request ) {
$settings = json_decode( $value, true );
// Check settings string is valid JSON.
if ( null === $settings ) {
return new WP_Error(
'rest_invalid_param',
/* translators: %s: Parameter name: "font_family_settings". */
sprintf( __( '%s parameter must be a valid JSON string.' ), 'font_family_settings' ),
array( 'status' => 400 )
);
}
$schema = $this->get_item_schema()['properties']['font_family_settings'];
$required = $schema['required'];
if ( isset( $request['id'] ) ) {
// Allow sending individual properties if we are updating an existing font family.
unset( $schema['required'] );
// But don't allow updating the slug, since it is used as a unique identifier.
if ( isset( $settings['slug'] ) ) {
return new WP_Error(
'rest_invalid_param',
/* translators: %s: Name of parameter being updated: font_family_settings[slug]". */
sprintf( __( '%s cannot be updated.' ), 'font_family_settings[slug]' ),
array( 'status' => 400 )
);
}
}
// Check that the font face settings match the theme.json schema.
$has_valid_settings = rest_validate_value_from_schema( $settings, $schema, 'font_family_settings' );
if ( is_wp_error( $has_valid_settings ) ) {
$has_valid_settings->add_data( array( 'status' => 400 ) );
return $has_valid_settings;
}
// Check that none of the required settings are empty values.
foreach ( $required as $key ) {
if ( isset( $settings[ $key ] ) && ! $settings[ $key ] ) {
return new WP_Error(
'rest_invalid_param',
/* translators: %s: Name of the empty font family setting parameter, e.g. "font_family_settings[slug]". */
sprintf( __( '%s cannot be empty.' ), "font_family_settings[ $key ]" ),
array( 'status' => 400 )
);
}
}
return true;
}
/**
* Sanitizes the font family settings when creating or updating a font family.
*
* @since 6.5.0
*
* @param string $value Encoded JSON string of font family settings.
* @return array Decoded array of font family settings.
*/
public function sanitize_font_family_settings( $value ) {
// Settings arrive as stringified JSON, since this is a multipart/form-data request.
$settings = json_decode( $value, true );
$schema = $this->get_item_schema()['properties']['font_family_settings']['properties'];
// Sanitize settings based on callbacks in the schema.
foreach ( $settings as $key => $value ) {
$sanitize_callback = $schema[ $key ]['arg_options']['sanitize_callback'];
$settings[ $key ] = call_user_func( $sanitize_callback, $value );
}
return $settings;
}
/**
* Creates a single font family.
*
* @since 6.5.0
*
* @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 ) {
$settings = $request->get_param( 'font_family_settings' );
// Check that the font family slug is unique.
$query = new WP_Query(
array(
'post_type' => $this->post_type,
'posts_per_page' => 1,
'name' => $settings['slug'],
'update_post_meta_cache' => false,
'update_post_term_cache' => false,
)
);
if ( ! empty( $query->posts ) ) {
return new WP_Error(
'rest_duplicate_font_family',
/* translators: %s: Font family slug. */
sprintf( __( 'A font family with slug "%s" already exists.' ), $settings['slug'] ),
array( 'status' => 400 )
);
}
return parent::create_item( $request );
}
/**
* Deletes a single font family.
*
* @since 6.5.0
*
* @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 delete_item( $request ) {
$force = isset( $request['force'] ) ? (bool) $request['force'] : false;
// We don't support trashing for font families.
if ( ! $force ) {
return new WP_Error(
'rest_trash_not_supported',
/* translators: %s: force=true */
sprintf( __( 'Font faces do not support trashing. Set "%s" to delete.' ), 'force=true' ),
array( 'status' => 501 )
);
}
return parent::delete_item( $request );
}
/**
* Prepares a single font family output for response.
*
* @since 6.5.0
*
* @param WP_Post $item Post object.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $item, $request ) {
$fields = $this->get_fields_for_response( $request );
$data = array();
if ( rest_is_field_included( 'id', $fields ) ) {
$data['id'] = $item->ID;
}
if ( rest_is_field_included( 'theme_json_version', $fields ) ) {
$data['theme_json_version'] = static::LATEST_THEME_JSON_VERSION_SUPPORTED;
}
if ( rest_is_field_included( 'font_faces', $fields ) ) {
$data['font_faces'] = $this->get_font_face_ids( $item->ID );
}
if ( rest_is_field_included( 'font_family_settings', $fields ) ) {
$data['font_family_settings'] = $this->get_settings_from_post( $item );
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
$response = rest_ensure_response( $data );
if ( rest_is_field_included( '_links', $fields ) ) {
$links = $this->prepare_links( $item );
$response->add_links( $links );
}
/**
* Filters the font family data for a REST API response.
*
* @since 6.5.0
*
* @param WP_REST_Response $response The response object.
* @param WP_Post $post Font family post object.
* @param WP_REST_Request $request Request object.
*/
return apply_filters( 'rest_prepare_wp_font_family', $response, $item, $request );
}
/**
* Retrieves the post's schema, conforming to JSON Schema.
*
* @since 6.5.0
*
* @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' => $this->post_type,
'type' => 'object',
// Base properties for every Post.
'properties' => array(
'id' => array(
'description' => __( 'Unique identifier for the post.', 'default' ),
'type' => 'integer',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'theme_json_version' => array(
'description' => __( 'Version of the theme.json schema used for the typography settings.' ),
'type' => 'integer',
'default' => static::LATEST_THEME_JSON_VERSION_SUPPORTED,
'minimum' => 2,
'maximum' => static::LATEST_THEME_JSON_VERSION_SUPPORTED,
'context' => array( 'view', 'edit', 'embed' ),
),
'font_faces' => array(
'description' => __( 'The IDs of the child font faces in the font family.' ),
'type' => 'array',
'context' => array( 'view', 'edit', 'embed' ),
'items' => array(
'type' => 'integer',
),
),
// Font family settings come directly from theme.json schema
// See https://schemas.wp.org/trunk/theme.json
'font_family_settings' => array(
'description' => __( 'font-face definition in theme.json format.' ),
'type' => 'object',
'context' => array( 'view', 'edit', 'embed' ),
'properties' => array(
'name' => array(
'description' => __( 'Name of the font family preset, translatable.' ),
'type' => 'string',
'arg_options' => array(
'sanitize_callback' => 'sanitize_text_field',
),
),
'slug' => array(
'description' => __( 'Kebab-case unique identifier for the font family preset.' ),
'type' => 'string',
'arg_options' => array(
'sanitize_callback' => 'sanitize_title',
),
),
'fontFamily' => array(
'description' => __( 'CSS font-family value.' ),
'type' => 'string',
'arg_options' => array(
'sanitize_callback' => array( 'WP_Font_Utils', 'sanitize_font_family' ),
),
),
'preview' => array(
'description' => __( 'URL to a preview image of the font family.' ),
'type' => 'string',
'format' => 'uri',
'default' => '',
'arg_options' => array(
'sanitize_callback' => 'sanitize_url',
),
),
),
'required' => array( 'name', 'slug', 'fontFamily' ),
'additionalProperties' => false,
),
),
);
$this->schema = $schema;
return $this->add_additional_fields_schema( $this->schema );
}
/**
* Retrieves the item's schema for display / public consumption purposes.
*
* @since 6.5.0
*
* @return array Public item schema data.
*/
public function get_public_item_schema() {
$schema = parent::get_public_item_schema();
// Also remove `arg_options' from child font_family_settings properties, since the parent
// controller only handles the top level properties.
foreach ( $schema['properties']['font_family_settings']['properties'] as &$property ) {
unset( $property['arg_options'] );
}
return $schema;
}
/**
* Retrieves the query params for the font family collection.
*
* @since 6.5.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
$query_params = parent::get_collection_params();
// Remove unneeded params.
unset(
$query_params['after'],
$query_params['modified_after'],
$query_params['before'],
$query_params['modified_before'],
$query_params['search'],
$query_params['search_columns'],
$query_params['status']
);
$query_params['orderby']['default'] = 'id';
$query_params['orderby']['enum'] = array( 'id', 'include' );
/**
* Filters collection parameters for the font family controller.
*
* @since 6.5.0
*
* @param array $query_params JSON Schema-formatted collection parameters.
*/
return apply_filters( 'rest_wp_font_family_collection_params', $query_params );
}
/**
* Get the arguments used when creating or updating a font family.
*
* @since 6.5.0
*
* @return array Font family create/edit arguments.
*/
public function get_endpoint_args_for_item_schema( $method = WP_REST_Server::CREATABLE ) {
if ( WP_REST_Server::CREATABLE === $method || WP_REST_Server::EDITABLE === $method ) {
$properties = $this->get_item_schema()['properties'];
return array(
'theme_json_version' => $properties['theme_json_version'],
// When creating or updating, font_family_settings is stringified JSON, to work with multipart/form-data.
// Font families don't currently support file uploads, but may accept preview files in the future.
'font_family_settings' => array(
'description' => __( 'font-family declaration in theme.json format, encoded as a string.' ),
'type' => 'string',
'required' => true,
'validate_callback' => array( $this, 'validate_font_family_settings' ),
'sanitize_callback' => array( $this, 'sanitize_font_family_settings' ),
),
);
}
return parent::get_endpoint_args_for_item_schema( $method );
}
/**
* Get the child font face post IDs.
*
* @since 6.5.0
*
* @param int $font_family_id Font family post ID.
* @return int[] Array of child font face post IDs.
*/
protected function get_font_face_ids( $font_family_id ) {
$query = new WP_Query(
array(
'fields' => 'ids',
'post_parent' => $font_family_id,
'post_type' => 'wp_font_face',
'posts_per_page' => 99,
'order' => 'ASC',
'orderby' => 'id',
'update_post_meta_cache' => false,
'update_post_term_cache' => false,
)
);
return $query->posts;
}
/**
* Prepares font family links for the request.
*
* @since 6.5.0
*
* @param WP_Post $post Post object.
* @return array Links for the given post.
*/
protected function prepare_links( $post ) {
// Entity meta.
$links = parent::prepare_links( $post );
return array(
'self' => $links['self'],
'collection' => $links['collection'],
'font_faces' => $this->prepare_font_face_links( $post->ID ),
);
}
/**
* Prepares child font face links for the request.
*
* @param int $font_family_id Font family post ID.
* @return array Links for the child font face posts.
*/
protected function prepare_font_face_links( $font_family_id ) {
$font_face_ids = $this->get_font_face_ids( $font_family_id );
$links = array();
foreach ( $font_face_ids as $font_face_id ) {
$links[] = array(
'embeddable' => true,
'href' => rest_url( sprintf( '%s/%s/%s/font-faces/%s', $this->namespace, $this->rest_base, $font_family_id, $font_face_id ) ),
);
}
return $links;
}
/**
* Prepares a single font family post for create or update.
*
* @since 6.5.0
*
* @param WP_REST_Request $request Request object.
* @return stdClass|WP_Error Post object or WP_Error.
*/
protected function prepare_item_for_database( $request ) {
$prepared_post = new stdClass();
// Settings have already been decoded by ::sanitize_font_family_settings().
$settings = $request->get_param( 'font_family_settings' );
// This is an update and we merge with the existing font family.
if ( isset( $request['id'] ) ) {
$existing_post = $this->get_post( $request['id'] );
if ( is_wp_error( $existing_post ) ) {
return $existing_post;
}
$prepared_post->ID = $existing_post->ID;
$existing_settings = $this->get_settings_from_post( $existing_post );
$settings = array_merge( $existing_settings, $settings );
}
$prepared_post->post_type = $this->post_type;
$prepared_post->post_status = 'publish';
$prepared_post->post_title = $settings['name'];
$prepared_post->post_name = sanitize_title( $settings['slug'] );
// Remove duplicate information from settings.
unset( $settings['name'] );
unset( $settings['slug'] );
$prepared_post->post_content = wp_json_encode( $settings );
return $prepared_post;
}
/**
* Gets the font family's settings from the post.
*
* @since 6.5.0
*
* @param WP_Post $post Font family post object.
* @return array Font family settings array.
*/
protected function get_settings_from_post( $post ) {
$settings_json = json_decode( $post->post_content, true );
// Default to empty strings if the settings are missing.
return array(
'name' => isset( $post->post_title ) && $post->post_title ? $post->post_title : '',
'slug' => isset( $post->post_name ) && $post->post_name ? $post->post_name : '',
'fontFamily' => isset( $settings_json['fontFamily'] ) && $settings_json['fontFamily'] ? $settings_json['fontFamily'] : '',
'preview' => isset( $settings_json['preview'] ) && $settings_json['preview'] ? $settings_json['preview'] : '',
);
}
}
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