From af7950b9d0e4d943990d2a44615d48096b5c5a8b Mon Sep 17 00:00:00 2001
From: joseph-d <joseph.d@nirada.co.th>
Date: Tue, 8 Nov 2016 09:46:27 +0000
Subject: [PATCH] Update Filter.php

There is an addScopes function for extensibility but no way to remove scopes which are already there.
---
 modules/backend/widgets/Filter.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/modules/backend/widgets/Filter.php b/modules/backend/widgets/Filter.php
index 2a19a3e17..ae39fb375 100644
--- a/modules/backend/widgets/Filter.php
+++ b/modules/backend/widgets/Filter.php
@@ -477,6 +477,17 @@ class Filter extends WidgetBase
             $this->allScopes[$name] = $scopeObj;
         }
     }
+    
+    /**
+     * Programatically remove a scope, used for extensibility.
+     * @param string $scopeName Scope name
+     */
+    public function removeScope($scopeName)
+    {
+        if (isset($this->allScopes[$scopeName])) {
+            unset($this->allScopes[$scopeName]);
+        }
+    }
 
     /**
      * Creates a filter scope object from name and configuration.