From 4d62f65b3f06744a1a9493be5e9446fbfcd8c582 Mon Sep 17 00:00:00 2001
From: Gordon Woodhull <gordon@woodhull.com>
Date: Fri, 18 Sep 2015 08:02:16 -0400
Subject: [PATCH] more specific test for filter function

for #990
@esjewett, I think this is a slightly safer way to check for a custom
filter function such as those in dc.filters
---
 src/base-mixin.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/base-mixin.js b/src/base-mixin.js
index 4d65dd69e..666b00357 100644
--- a/src/base-mixin.js
+++ b/src/base-mixin.js
@@ -71,7 +71,8 @@ dc.baseMixin = function (_chart) {
     var _filterHandler = function (dimension, filters) {
         if (filters.length === 0) {
             dimension.filter(null);
-        } else if (filters.length === 1 && !Array.isArray(filters[0])) {
+        } else if (filters.length === 1 && !filters[0].isFiltered) {
+            // single value and not a function-based filter
             dimension.filterExact(filters[0]);
         } else {
             dimension.filterFunction(function (d) {