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wp-content/plugins/advanced-custom-fields/includes/locations/class-acf-location-page-parent.php

@@ -0,0 +1,72 @@
+<?php
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly
+}
+
+if ( ! class_exists( 'ACF_Location_Page_Parent' ) ) :
+
+	class ACF_Location_Page_Parent extends ACF_Location {
+
+		/**
+		 * Initializes props.
+		 *
+		 * @date    5/03/2014
+		 * @since   5.0.0
+		 *
+		 * @param   void
+		 * @return  void
+		 */
+		public function initialize() {
+			$this->name           = 'page_parent';
+			$this->label          = __( 'Page Parent', 'acf' );
+			$this->category       = 'page';
+			$this->object_type    = 'post';
+			$this->object_subtype = 'page';
+		}
+
+		/**
+		 * 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 ) {
+
+			// Check screen args.
+			if ( isset( $screen['page_parent'] ) ) {
+				$page_parent = $screen['page_parent'];
+			} elseif ( isset( $screen['post_id'] ) ) {
+				$post        = get_post( $screen['post_id'] );
+				$page_parent = $post ? $post->post_parent : false;
+			} else {
+				return false;
+			}
+
+			// Compare rule against $page_parent.
+			return $this->compare_to_rule( $page_parent, $rule );
+		}
+
+		/**
+		 * 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 ) {
+			return acf_get_location_type( 'page' )->get_values( $rule );
+		}
+	}
+
+	// Register.
+	acf_register_location_type( 'ACF_Location_Page_Parent' );
+
+endif; // class_exists check