From 9072bb878bd851008df00af0b1a6a55526157b94 Mon Sep 17 00:00:00 2001
From: Dailer <Dailer@fanruan.com>
Date: Tue, 10 Jul 2018 10:42:11 +0800
Subject: [PATCH] =?UTF-8?q?DEC-2957=20=20=E9=83=A8=E9=97=A8=E6=A0=91?=
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 =?UTF-8?q?=E5=8D=A1=E6=AD=BB=E4=BA=86.?=
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---
 src/base/combination/tree.button.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/base/combination/tree.button.js b/src/base/combination/tree.button.js
index 0235ebf25..6c529e147 100644
--- a/src/base/combination/tree.button.js
+++ b/src/base/combination/tree.button.js
@@ -78,7 +78,7 @@ BI.ButtonTree = BI.inherit(BI.ButtonGroup, {
         var v = [];
         BI.each(this.buttons, function (i, item) {
             if (item.isEnabled() && !BI.isFunction(item.setSelected)) {
-                v = BI.concat(v, item.getValue());
+                v = BI.union(v, item.getValue());
                 return;
             }
             if (item.isEnabled() && item.isSelected && item.isSelected()) {