n void
		 */
		public function set_listing_item_index( $index ) {
			$this->listing_item_index = $index;
		}

		/**
		 * Reset repeater index
		 *
		 * @return [type] [description]
		 */
		public function reset_listing_item_index() {
			$this->listing_item_index = 1;
		}

		/**
		 * Get repeater index
		 *
		 * @return int
		 */
		public function get_listing_item_index() {
			return $this->listing_item_index;
		}

		/**
		 * Set repeater index
		 *
		 * @param int $index
		 * @return void
		 */
		public function set_index( $index ) {
			$this->repeater_index = $index;
		}

		/**
		 * Returns repeater value
		 *
		 * @return [type] [description]
		 */
		public function get_repeater_value( $field ) {

			$source_field    = $this->current_listing->get_settings( 'repeater_field' );
			$repeater_source = $this->current_listing->get_settings( 'repeater_source' );
			$index           = $this->repeater_index;
			$object          = $this->get_current_object();

			switch ( $repeater_source ) {
				case 'jet_engine':

					$meta_value = $this->get_meta( $source_field, $this->get_current_object(), 'object' );

					if ( empty( $meta_value ) || ! is_array( $meta_value ) ) {
						return false;
					}

					$meta_value = array_values( $meta_value );

					if ( empty( $meta_value[ $index ] ) ) {
						return false;
					} else {
						return isset( $meta_value[ $index ][ $field ] ) ? $meta_value[ $index ][ $field ] : false;
					}

				case 'jet_engine_options':

					$source_option = $this->current_listing->get_settings( 'repeater_option' );

					if ( ! $source_option ) {
						return false;
					}

					$meta_value = $this->get_option( $source_option );

					if ( empty( $meta_value ) || ! is_array( $meta_value ) ) {
						return false;
					}

					$meta_value = array_values( $meta_value );

					if ( empty( $meta_value[ $index ] ) ) {
						return false;
					} else {
						return isset( $meta_value[ $index ][ $field ] ) ? $meta_value[ $index ][ $field ] : false;
					}

				case 'acf':
					return $this->get_acf_repeater_value( $object, $source_field, $field );

				default:
					return apply_filters(
						'jet-engine/listings/data/repeater-value/' . $repeater_source,
						false,
						$object,
						$source_field,
						$field,
						$index,
						$this
					);
			}

		}

		/**
		 * Returns value of ACF repeater field
		 *
		 * @param  [type] $parent_field [description]
		 * @param  [type] $child_field  [description]
		 * @return [type]               [description]
		 */
		public function get_acf_repeater_value( $object, $parent_field, $child_field ) {
			$field_key = $parent_field . '_' . $this->repeater_index . '_' . $child_field;
			return $this->get_meta( $field_key, $object, 'object' );
		}

		/**
		 * Get permalink to current post/term
		 *
		 * @return string
		 */
		public function get_current_object_permalink( $object = null ) {

			if ( ! $object ) {
				$object = $this->get_current_object();
			}

			if ( ! $object || ! is_object( $object ) ) {
				return null;
			}

			$class  = get_class( $object );
			$result = '';

			switch ( $class ) {
				case 'WP_Post':
					return get_permalink( $object->ID );

				case 'WP_Term':					
					$result = get_term_link( absint( $object->term_id ) );

					if ( is_wp_error( $result ) ) {
						return '';
					}

					return $result;

				case 'WP_User':
					return apply_filters( 'jet-engine/listings/data/user-permalink', false, $object );
			}

			return null;

		}

		/**
		 * Returns available list sources
		 *
		 * @return [type] [description]
		 */
		public function get_field_sources() {

			$sources = array(
				'object'    => __( 'Post/Term/User/Object Data', 'jet-engine' ),
				'meta'      => __( 'Meta Data', 'jet-engine' ),
				'query_var' => __( 'Query Variable', 'jet-engine' ),
			);

			if ( jet_engine()->options_pages ) {
				$sources['options_page'] = __( 'Options', 'jet-engine' );
			}

			if ( jet_engine()->relations ) {
				$sources['relations_hierarchy'] = __( 'Relations Hierarchy', 'jet-engine' );
			}

			$source = false;

			if ( $this->current_listing ) {
				$source = $this->current_listing->get_settings( 'listing_source' );
			}

			$repeater_sources = apply_filters( 'jet-engine/listing/repeater-listing-sources', array( 'repeater' ) );

			if ( in_array( $source, $repeater_sources ) ) {
				$sources['repeater_field'] = __( 'Repeater Field', 'jet-engine' );
			}

			return apply_filters( 'jet-engine/listings/data/sources', $sources );
		}

		/**
		 * Set $current_object property by object id and class name.
		 *
		 * @param mixed  $object_id  Object ID
		 * @param string $class      Object class name
		 * @param bool   $clear_hook Clear or not the `the_post` hook
		 */
		public function set_current_object_by_id( $object_id = null, $class = null, $clear_hook = false ) {
			$object = $this->get_object_by_id( $object_id, $class );
			$this->set_current_object( $object, $clear_hook );
		}

		/**
		 * Get object by object id and class name.
		 *
		 * @param mixed  $object_id Object ID
		 * @param string $class     Object class name
		 *
		 * @return object|null
		 */
		public function get_object_by_id( $object_id = null, $class = null ) {

			$object = null;

			if ( ! $object_id || ! $class ) {
				return $object;
			}

			switch ( $class ) {
				case 'WP_Post':
					$object = get_post( $object_id );
					break;

				case 'WP_Term':
					$object = get_term( $object_id );
					break;

				case 'WP_User':
					$object = get_user_by( 'ID', $object_id );
					break;

				case 'WP_Comment':
					$object = get_comment( $object_id );
					break;

				default:
					$object = apply_filters(
						'jet-engine/listings/data/object-by-id',
						null, $object_id, $class
					);
			}

			return $object;
		}

	}

}