tes, 'woocommerce-pdf-invoices-packing-slips' ) : false;
		
		return apply_filters( 'wpo_wcpdf_shipping_notes', $shipping_notes, $this );
	}
	public function shipping_notes() {
		echo $this->get_shipping_notes();
	}

	/**
	 * wrapper for wc_price, ensuring currency is always passed
	 */
	public function format_price( $price, $args = array() ) {
		$args['currency'] = $this->order->get_currency();
		$formatted_price  = wc_price( $price, $args );

		return $formatted_price;
	}
	public function wc_price( $price, $args = array() ) {
		return $this->format_price( $price, $args );
	}
	
	/**
	 * Gets price - formatted for display.
	 *
	 * @access public
	 * @param mixed $item
	 * @return string
	 */
	public function get_formatted_item_price ( $item, $type, $tax_display = '' ) {
		if ( ! isset( $item['line_subtotal'] ) || ! isset( $item['line_subtotal_tax'] ) ) {
			return '';
		}

		$divide_by = ($type == 'single' && $item['qty'] != 0 )?abs($item['qty']):1; //divide by 1 if $type is not 'single' (thus 'total')
		if ( $tax_display == 'excl' ) {
			$item_price = $this->format_price( ($this->order->get_line_subtotal( $item )) / $divide_by );
		} else {
			$item_price = $this->format_price( ($this->order->get_line_subtotal( $item, true )) / $divide_by );
		}

		return $item_price;
	}

	public function get_invoice_number() {
		// Call the woocommerce_invoice_number filter and let third-party plugins set a number.
		// Default is null, so we can detect whether a plugin has set the invoice number
		$third_party_invoice_number = apply_filters( 'woocommerce_invoice_number', null, $this->order_id );
		if ($third_party_invoice_number !== null) {
			return $third_party_invoice_number;
		}

		if ( $invoice_number = $this->get_number('invoice') ) {
			return $formatted_invoice_number = $invoice_number->get_formatted();
		} else {
			return '';
		}
	}

	public function invoice_number() {
		echo $this->get_invoice_number();
	}

	public function get_invoice_date() {
		if ( $invoice_date = $this->get_date('invoice') ) {
			return $invoice_date->date_i18n( wcpdf_date_format( $this, 'invoice_date' ) );
		} else {
			return '';
		}
	}

	public function invoice_date() {
		echo $this->get_invoice_date();
	}

	public function get_document_notes() {
		if ( $document_notes = $this->get_notes( $this->get_type() ) ) {
			return $document_notes;
		} else {
			return '';
		}
	}

	public function document_notes() {
		$document_notes = $this->get_document_notes();
		if( $document_notes == strip_tags( $document_notes ) ) {
			echo nl2br( $document_notes );
		} else {
			echo $document_notes;
		}
	}
	
	public function document_display_date() {
		$document_display_date = $this->get_display_date( $this->get_type() );

		//If display date data is not available in order meta (for older orders), get the display date information from document settings order meta.
		if ( empty( $document_display_date ) ) {
			$document_settings = $this->settings;
			if( isset( $document_settings['display_date'] ) ) {
				$document_display_date = $document_settings['display_date'];
			}
			else {
				$document_display_date = 'invoice_date';	
			}
		} 

		$formatted_value = $this->get_display_date_label( $document_display_date );
		return $formatted_value;
	}

	public function get_display_date_label( $date_string ) {
		
		$date_labels = array(
			'invoice_date'	=> __( 'Invoice Date' , 'woocommerce-pdf-invoices-packing-slips' ),
			'order_date'	=> __( 'Order Date' , 'woocommerce-pdf-invoices-packing-slips' ),
		);
		if( isset( $date_labels[$date_string] ) ) {
			return $date_labels[ $date_string ];	
		} else {
			return '';
		}
		
	}
	
}

endif; // class_exists