From 9bccddc9d7af650ca0bd26a48ed64f72d63fc6d7 Mon Sep 17 00:00:00 2001
From: Dailer <Dailer@fanruan.com>
Date: Tue, 8 Mar 2022 21:15:46 +0800
Subject: [PATCH] =?UTF-8?q?=E6=97=A0JRIA=20tab=E5=9C=A8single:true?=
 =?UTF-8?q?=E7=8A=B6=E6=80=81=E4=B8=8B=E6=94=AF=E6=8C=81keepAlive?=
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---
 src/base/combination/tab.js        | 11 +++++++++--
 typescript/base/combination/tab.ts |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/base/combination/tab.js b/src/base/combination/tab.js
index 664b0c09a..06a9a06fd 100644
--- a/src/base/combination/tab.js
+++ b/src/base/combination/tab.js
@@ -15,7 +15,8 @@ BI.Tab = BI.inherit(BI.Widget, {
             tab: false,
             cardCreator: function (v) {
                 return BI.createWidget();
-            }
+            },
+            keepAlives: []
         });
     },
 
@@ -60,7 +61,7 @@ BI.Tab = BI.inherit(BI.Widget, {
         var self = this, o = this.options;
         if (o.single === true) {
             BI.each(this.cardMap, function (name, card) {
-                if (name !== (currCardName + "")) {
+                if (name !== (currCardName + "") && self._keepAlive(name) !== true) {
                     self.layout.deleteCardByName(name);
                     delete self.cardMap[name];
                 }
@@ -76,6 +77,12 @@ BI.Tab = BI.inherit(BI.Widget, {
         }
     },
 
+    _keepAlive: function (v) {
+        var o = this.options;
+        var keepAlives = BI.isFunction(o.keepAlives) ? o.keepAlives() : o.keepAlives;
+        return BI.contains(keepAlives, v);
+    },
+
     created: function () {
         var o = this.options;
         if (o.showIndex !== false) {
diff --git a/typescript/base/combination/tab.ts b/typescript/base/combination/tab.ts
index 611c3e9c0..fa4cc8b25 100644
--- a/typescript/base/combination/tab.ts
+++ b/typescript/base/combination/tab.ts
@@ -15,6 +15,7 @@ export declare class Tab extends Widget {
             dynamic: boolean;
         };
         tab?: Obj;
+        keepAlives?: string[] | ((cardName: string) => boolean)
     }
 
     setSelect(v: string | number, action?: Action, callback?: Function): void;