uiu-cse/inc/acf/includes/locations/class-acf-location-post-category.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

if ( ! class_exists( 'ACF_Location_Post_Category' ) ) :

	class ACF_Location_Post_Category extends ACF_Location {

		/**
		 * Initializes props.
		 *
		 * @date    5/03/2014
		 * @since   5.0.0
		 *
		 * @param   void
		 * @return  void
		 */
		public function initialize() {
			$this->name        = 'post_category';
			$this->label       = __( 'Post Category', 'acf' );
			$this->category    = 'post';
			$this->object_type = 'post';
		}

		/**
		 * Matches the provided rule against the screen args returning a bool result.
		 *
		 * @date    9/4/20
		 * @since   5.9.0
		 *
		 * @param   array $rule The location rule.
		 * @param   array $screen The screen args.
		 * @param   array $field_group The field group settings.
		 * @return  bool
		 */
		public function match( $rule, $screen, $field_group ) {
			return acf_get_location_type( 'post_taxonomy' )->match( $rule, $screen, $field_group );
		}

		/**
		 * Returns an array of possible values for this rule type.
		 *
		 * @date    9/4/20
		 * @since   5.9.0
		 *
		 * @param   array $rule A location rule.
		 * @return  array
		 */
		public function get_values( $rule ) {
			$choices = acf_get_taxonomy_terms( array( 'category' ) );
			if ( $choices ) {
				return reset( $choices );
			}
			return array();
		}

		/**
		 * Returns the object_subtype connected to this location.
		 *
		 * @date    1/4/20
		 * @since   5.9.0
		 *
		 * @param   array $rule A location rule.
		 * @return  string|array
		 */
		public function get_object_subtype( $rule ) {
			return acf_get_location_type( 'post_taxonomy' )->get_object_subtype( $rule );
		}
	}

	// initialize
	acf_register_location_rule( 'ACF_Location_Post_Category' );

endif; // class_exists check