无JRIA tab在single:true状态下支持keepAlive

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) {

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;