<?php

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/**

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* REST API: WP_REST_Themes_Controller class

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*

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* @package WordPress

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* @subpackage REST_API

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* @since 5.0.0

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*/

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/**

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* Core class used to manage themes via the REST API.

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*

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* @since 5.0.0

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*

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* @see WP_REST_Controller

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*/

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class WP_REST_Themes_Controller extends WP_REST_Controller {

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/**

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* Matches theme's directory: `/themes/<subdirectory>/<theme>/` or `/themes/<theme>/`.

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* Excludes invalid directory name characters: `/:<>*?"|`.

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*/

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const PATTERN = '[^\/:<>\*\?"\|]+(?:\/[^\/:<>\*\?"\|]+)?';

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/**

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* Constructor.

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*

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* @since 5.0.0

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*/

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public function __construct() {

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$this->namespace = 'wp/v2';

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$this->rest_base = 'themes';

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}

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/**

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* Registers the routes for themes.

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*

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* @since 5.0.0

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*

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* @see register_rest_route()

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*/

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public function register_routes() {

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register_rest_route(

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$this->namespace,

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'/' . $this->rest_base,

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array(

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array(

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'methods' => WP_REST_Server::READABLE,

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'callback' => array( $this, 'get_items' ),

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'permission_callback' => array( $this, 'get_items_permissions_check' ),

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'args' => $this->get_collection_params(),

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),

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'schema' => array( $this, 'get_item_schema' ),

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)

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);

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register_rest_route(

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$this->namespace,

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sprintf( '/%s/(?P<stylesheet>%s)', $this->rest_base, self::PATTERN ),

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array(

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'args' => array(

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'stylesheet' => array(

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'description' => __( "The theme's stylesheet. This uniquely identifies the theme." ),

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'type' => 'string',

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'sanitize_callback' => array( $this, '_sanitize_stylesheet_callback' ),

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),

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),

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array(

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'methods' => WP_REST_Server::READABLE,

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'callback' => array( $this, 'get_item' ),

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'permission_callback' => array( $this, 'get_item_permissions_check' ),

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),

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'schema' => array( $this, 'get_public_item_schema' ),

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)

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);

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}

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/**

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* Sanitize the stylesheet to decode endpoint.

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*

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* @since 5.9.0

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*

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* @param string $stylesheet The stylesheet name.

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* @return string Sanitized stylesheet.

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*/

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public function _sanitize_stylesheet_callback( $stylesheet ) {

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return urldecode( $stylesheet );

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}

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/**

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* Checks if a given request has access to read the theme.

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*

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* @since 5.0.0

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*

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* @param WP_REST_Request $request Full details about the request.

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* @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object.

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*/

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public function get_items_permissions_check( $request ) {

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if ( current_user_can( 'switch_themes' ) || current_user_can( 'manage_network_themes' ) ) {

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return true;

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}

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$registered = $this->get_collection_params();

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if ( isset( $registered['status'], $request['status'] ) && is_array( $request['status'] ) && array( 'active' ) === $request['status'] ) {

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return $this->check_read_active_theme_permission();

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}

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return new WP_Error(

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'rest_cannot_view_themes',

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__( 'Sorry, you are not allowed to view themes.' ),

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array( 'status' => rest_authorization_required_code() )

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);

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}

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/**

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* Checks if a given request has access to read the theme.

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*

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* @since 5.7.0

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*

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* @param WP_REST_Request $request Full details about the request.

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* @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object.

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*/

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public function get_item_permissions_check( $request ) {

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if ( current_user_can( 'switch_themes' ) || current_user_can( 'manage_network_themes' ) ) {

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return true;

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}

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$wp_theme = wp_get_theme( $request['stylesheet'] );

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$current_theme = wp_get_theme();

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if ( $this->is_same_theme( $wp_theme, $current_theme ) ) {

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return $this->check_read_active_theme_permission();

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}

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return new WP_Error(

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'rest_cannot_view_themes',

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__( 'Sorry, you are not allowed to view themes.' ),

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array( 'status' => rest_authorization_required_code() )

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);

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}

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/**

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* Checks if a theme can be read.

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*

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* @since 5.7.0

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*

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* @return true|WP_Error True if the theme can be read, WP_Error object otherwise.

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*/

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protected function check_read_active_theme_permission() {

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if ( current_user_can( 'edit_posts' ) ) {

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return true;

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}

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foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {

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if ( current_user_can( $post_type->cap->edit_posts ) ) {

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return true;

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}

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}

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return new WP_Error(

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'rest_cannot_view_active_theme',

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__( 'Sorry, you are not allowed to view the active theme.' ),

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array( 'status' => rest_authorization_required_code() )

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);

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}

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/**

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* Retrieves a single theme.

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*

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* @since 5.7.0

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*

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* @param WP_REST_Request $request Full details about the request.

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* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.

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*/

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public function get_item( $request ) {

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$wp_theme = wp_get_theme( $request['stylesheet'] );

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if ( ! $wp_theme->exists() ) {

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return new WP_Error(

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'rest_theme_not_found',

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__( 'Theme not found.' ),

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array( 'status' => 404 )

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);

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}

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$data = $this->prepare_item_for_response( $wp_theme, $request );

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return rest_ensure_response( $data );

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}

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/**

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* Retrieves a collection of themes.

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*

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* @since 5.0.0

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*

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* @param WP_REST_Request $request Full details about the request.

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* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.

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*/

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public function get_items( $request ) {

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$themes = array();

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$active_themes = wp_get_themes();

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$current_theme = wp_get_theme();

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$status = $request['status'];

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foreach ( $active_themes as $theme_name => $theme ) {

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$theme_status = ( $this->is_same_theme( $theme, $current_theme ) ) ? 'active' : 'inactive';

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if ( is_array( $status ) && ! in_array( $theme_status, $status, true ) ) {

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continue;

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}

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$prepared = $this->prepare_item_for_response( $theme, $request );

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$themes[] = $this->prepare_response_for_collection( $prepared );

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}

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$response = rest_ensure_response( $themes );

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$response->header( 'X-WP-Total', count( $themes ) );

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$response->header( 'X-WP-TotalPages', 1 );

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return $response;

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}

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/**

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* Prepares a single theme output for response.

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*

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* @since 5.0.0

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* @since 5.9.0 Renamed `$theme` to `$item` to match parent class for PHP 8 named parameter support.

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* @since 6.6.0 Added `stylesheet_uri` and `template_uri` fields.

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*

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* @param WP_Theme $item Theme object.

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* @param WP_REST_Request $request Request object.

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* @return WP_REST_Response Response object.

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*/

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public function prepare_item_for_response( $item, $request ) {

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// Restores the more descriptive, specific name for use within this method.

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$theme = $item;

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$fields = $this->get_fields_for_response( $request );

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$data = array();

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if ( rest_is_field_included( 'stylesheet', $fields ) ) {

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$data['stylesheet'] = $theme->get_stylesheet();

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}

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if ( rest_is_field_included( 'template', $fields ) ) {

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/**

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* Use the get_template() method, not the 'Template' header, for finding the template.

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* The 'Template' header is only good for what was written in the style.css, while

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* get_template() takes into account where WordPress actually located the theme and

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* whether it is actually valid.

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*/

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$data['template'] = $theme->get_template();

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}

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$plain_field_mappings = array(

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'requires_php' => 'RequiresPHP',

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'requires_wp' => 'RequiresWP',

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'textdomain' => 'TextDomain',

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'version' => 'Version',

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);

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foreach ( $plain_field_mappings as $field => $header ) {

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if ( rest_is_field_included( $field, $fields ) ) {

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$data[ $field ] = $theme->get( $header );

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}

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}

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if ( rest_is_field_included( 'screenshot', $fields ) ) {

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// Using $theme->get_screenshot() with no args to get absolute URL.

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$data['screenshot'] = $theme->get_screenshot() ? $theme->get_screenshot() : '';

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}

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$rich_field_mappings = array(

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'author' => 'Author',

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'author_uri' => 'AuthorURI',

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'description' => 'Description',

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'name' => 'Name',

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'tags' => 'Tags',

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'theme_uri' => 'ThemeURI',

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);

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foreach ( $rich_field_mappings as $field => $header ) {

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if ( rest_is_field_included( "{$field}.raw", $fields ) ) {

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$data[ $field ]['raw'] = $theme->display( $header, false, true );

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}

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if ( rest_is_field_included( "{$field}.rendered", $fields ) ) {

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$data[ $field ]['rendered'] = $theme->display( $header );

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}

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}

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$current_theme = wp_get_theme();

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if ( rest_is_field_included( 'status', $fields ) ) {

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$data['status'] = ( $this->is_same_theme( $theme, $current_theme ) ) ? 'active' : 'inactive';

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}

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if ( rest_is_field_included( 'theme_supports', $fields ) && $this->is_same_theme( $theme, $current_theme ) ) {

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foreach ( get_registered_theme_features() as $feature => $config ) {

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if ( ! is_array( $config['show_in_rest'] ) ) {

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continue;

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}

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$name = $config['show_in_rest']['name'];

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if ( ! rest_is_field_included( "theme_supports.{$name}", $fields ) ) {

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continue;

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}

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if ( ! current_theme_supports( $feature ) ) {

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$data['theme_supports'][ $name ] = $config['show_in_rest']['schema']['default'];

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continue;

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}

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$support = get_theme_support( $feature );

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if ( isset( $config['show_in_rest']['prepare_callback'] ) ) {

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$prepare = $config['show_in_rest']['prepare_callback'];

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} else {

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$prepare = array( $this, 'prepare_theme_support' );

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}

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$prepared = $prepare( $support, $config, $feature, $request );

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if ( is_wp_error( $prepared ) ) {

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continue;

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}

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$data['theme_supports'][ $name ] = $prepared;

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}

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}

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if ( rest_is_field_included( 'is_block_theme', $fields ) ) {

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$data['is_block_theme'] = $theme->is_block_theme();

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}

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if ( rest_is_field_included( 'stylesheet_uri', $fields ) ) {

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if ( $this->is_same_theme( $theme, $current_theme ) ) {

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$data['stylesheet_uri'] = get_stylesheet_directory_uri();

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} else {

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$data['stylesheet_uri'] = $theme->get_stylesheet_directory_uri();

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}

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}

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if ( rest_is_field_included( 'template_uri', $fields ) ) {

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if ( $this->is_same_theme( $theme, $current_theme ) ) {

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$data['template_uri'] = get_template_directory_uri();

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} else {

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$data['template_uri'] = $theme->get_template_directory_uri();

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}

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}

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$data = $this->add_additional_fields_to_object( $data, $request );

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// Wrap the data in a response object.

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$response = rest_ensure_response( $data );

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if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {

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$response->add_links( $this->prepare_links( $theme ) );

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}

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/**

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* Filters theme data returned from the REST API.

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*

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* @since 5.0.0

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*

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* @param WP_REST_Response $response The response object.

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* @param WP_Theme $theme Theme object used to create response.

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* @param WP_REST_Request $request Request object.

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*/

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return apply_filters( 'rest_prepare_theme', $response, $theme, $request );

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}

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/**

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* Prepares links for the request.

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*

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* @since 5.7.0

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*

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* @param WP_Theme $theme Theme data.

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* @return array Links for the given block type.

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*/

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protected function prepare_links( $theme ) {

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$links = array(

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'self' => array(

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'href' => rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $theme->get_stylesheet() ) ),

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),

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'collection' => array(

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'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),

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),

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);

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if ( $this->is_same_theme( $theme, wp_get_theme() ) ) {

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// This creates a record for the active theme if not existent.

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$id = WP_Theme_JSON_Resolver::get_user_global_styles_post_id();

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} else {

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$user_cpt = WP_Theme_JSON_Resolver::get_user_data_from_wp_global_styles( $theme );

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$id = isset( $user_cpt['ID'] ) ? $user_cpt['ID'] : null;

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}

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if ( $id ) {

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$links['https://api.w.org/user-global-styles'] = array(

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'href' => rest_url( 'wp/v2/global-styles/' . $id ),

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);

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}

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return $links;

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}

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/**

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* Helper function to compare two themes.

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*

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* @since 5.7.0

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*

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* @param WP_Theme $theme_a First theme to compare.

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* @param WP_Theme $theme_b Second theme to compare.

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* @return bool

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*/

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protected function is_same_theme( $theme_a, $theme_b ) {

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return $theme_a->get_stylesheet() === $theme_b->get_stylesheet();

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}

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/**

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* Prepares the theme support value for inclusion in the REST API response.

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*

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* @since 5.5.0

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*

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* @param mixed $support The raw value from get_theme_support().

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* @param array $args The feature's registration args.

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* @param string $feature The feature name.

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* @param WP_REST_Request $request The request object.

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* @return mixed The prepared support value.

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*/

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protected function prepare_theme_support( $support, $args, $feature, $request ) {

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$schema = $args['show_in_rest']['schema'];

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if ( 'boolean' === $schema['type'] ) {

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return true;

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}

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if ( is_array( $support ) && ! $args['variadic'] ) {

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$support = $support[0];

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}

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return rest_sanitize_value_from_schema( $support, $schema );

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}

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/**

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* Retrieves the theme's schema, conforming to JSON Schema.

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*

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* @since 5.0.0

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*

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* @return array Item schema data.

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*/

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public function get_item_schema() {

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if ( $this->schema ) {

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return $this->add_additional_fields_schema( $this->schema );

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}

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$schema = array(

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'$schema' => 'http://json-schema.org/draft-04/schema#',

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'title' => 'theme',

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'type' => 'object',

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'properties' => array(

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'stylesheet' => array(

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'description' => __( 'The theme\'s stylesheet. This uniquely identifies the theme.' ),

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'type' => 'string',

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'readonly' => true,

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),

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'stylesheet_uri' => array(

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'description' => __( 'The uri for the theme\'s stylesheet directory.' ),

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'type' => 'string',

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'format' => 'uri',

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'readonly' => true,

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),

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'template' => array(

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'description' => __( 'The theme\'s template. If this is a child theme, this refers to the parent theme, otherwise this is the same as the theme\'s stylesheet.' ),

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'type' => 'string',

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'readonly' => true,

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),

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'template_uri' => array(

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'description' => __( 'The uri for the theme\'s template directory. If this is a child theme, this refers to the parent theme, otherwise this is the same as the theme\'s stylesheet directory.' ),

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'type' => 'string',

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'format' => 'uri',

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'readonly' => true,

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),

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'author' => array(

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'description' => __( 'The theme author.' ),

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'type' => 'object',

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'readonly' => true,

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'properties' => array(

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'raw' => array(

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'description' => __( 'The theme author\'s name, as found in the theme header.' ),

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'type' => 'string',

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),

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'rendered' => array(

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'description' => __( 'HTML for the theme author, transformed for display.' ),

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'type' => 'string',

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),

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),

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),

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'author_uri' => array(

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'description' => __( 'The website of the theme author.' ),

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