Adds public method get_items_weight()

helpers/shop_packedbox.php

@@ -40,15 +40,7 @@ public function get_weight($unit='native'){
 
 	public function get_calculated_weight(){
 		$weight = $this->box->empty_weight ? $this->box->empty_weight : 0;
-		$weight += $this->get_item_weight();
-		return $weight;
-	}
-
-	protected function get_item_weight(){
-		$weight = 0;
-		foreach ($this->items as $item){
-			$weight += $item->total_weight();
-		}
+		$weight += $this->get_items_weight();
 		return $weight;
 	}
 
@@ -70,6 +62,14 @@ public function get_items_count(){
 		return $count;
 	}
 
+    public function get_items_weight(){
+        $weight = 0;
+        foreach ($this->items as $item){
+            $weight += $item->total_weight();
+        }
+        return $weight;
+    }
+
 	public function get_box(){
 		return $this->box;
 	}