From 100c4c7c4943975cf90c0291d31c96e825ddaa06 Mon Sep 17 00:00:00 2001
From: Brent Shepherd <thenbrent@gmail.com>
Date: Wed, 23 May 2012 12:15:04 +1000
Subject: [PATCH] Adding cart discount filters to
 WC_Cart::get_discounts_before_tax(), WC_Cart::get_discounts_after_tax() and
 WC_Cart::get_total_discount().

---
 classes/class-wc-cart.php | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/classes/class-wc-cart.php b/classes/class-wc-cart.php
index 597a3223eb8..548b7455f7e 100644
--- a/classes/class-wc-cart.php
+++ b/classes/class-wc-cart.php
@@ -1791,9 +1791,11 @@ class WC_Cart {
 		 */
 		function get_discounts_before_tax() {
 			if ( $this->discount_cart ) {
-				return woocommerce_price( $this->discount_cart ); 
+				$discounts_before_tax = woocommerce_price( $this->discount_cart ); 
+			} else {
+				$discounts_before_tax = false;
 			}
-			return false;
+			return apply_filters( 'woocommerce_cart_discounts_before_tax', $discounts_before_tax, $this );
 		}
 		
 		/**
@@ -1803,9 +1805,11 @@ class WC_Cart {
 		 */
 		function get_discounts_after_tax() {
 			if ( $this->discount_total ) {
-				return woocommerce_price( $this->discount_total ); 
+				$discounts_after_tax = woocommerce_price( $this->discount_total ); 
+			} else {
+				$discounts_after_tax = false;
 			}
-			return false;
+			return apply_filters( 'woocommerce_cart_discounts_after_tax', $discounts_after_tax, $this );
 		}
 		
 		/**
@@ -1815,10 +1819,12 @@ class WC_Cart {
 		 */
 		function get_total_discount() {
 			if ( $this->discount_total || $this->discount_cart ) {
-				return woocommerce_price( $this->discount_total + $this->discount_cart ); 
+				$total_discount = woocommerce_price( $this->discount_total + $this->discount_cart );
+			} else {
+				$total_discount = false;
 			}
-			return false;
-		}	
+			return apply_filters( 'woocommerce_cart_total_discount', $total_discount, $this );
+		}
 }
 
 /**