From eaeffb57140b57bdcb0ed2edee5b37dd927f46bb Mon Sep 17 00:00:00 2001
From: shine <zheng@fanruan.com>
Date: Wed, 16 Dec 2020 17:51:56 +0800
Subject: [PATCH] =?UTF-8?q?CHART-17231=20=E9=BB=98=E8=AE=A4=E4=B8=8D?=
 =?UTF-8?q?=E9=80=89=E4=B8=AD=E4=BB=BB=E4=BD=95=E9=A1=B9?=
MIME-Version: 1.0
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---
 .../main/java/com/fr/extended/chart/UIComboBoxWithNone.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java b/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java
index 65e7bbb43f..9c6636fd74 100644
--- a/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java
+++ b/designer-chart/src/main/java/com/fr/extended/chart/UIComboBoxWithNone.java
@@ -23,7 +23,11 @@ public class UIComboBoxWithNone extends UIComboBox {
     }
 
     protected void setDefaultSelectedItem() {
-        setSelectedItem(StringUtils.EMPTY);
+        // JComboBox.setSelectedItem(o)
+        // if(o!=null)寻找o对应的下拉选项 如果找不到 还是选中之前选中的
+        // 所以空字符串 不是选中空 是选中上次选中的
+        // 所以这边 可以写setSelectedItem(null) or setSelectedIndex(-1)
+        setSelectedIndex(-1);
     }
 
     @Override