<?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