refactor: 修正不规范的写法

src/app/app.ts

@@ -39,7 +39,6 @@ const Widget = BI.inherit(BI.Widget, {
           }, {
             el: {
               type: linkStatus,
-              invisible: true,
             },
             left: 10,
             top: 10,

src/app/status/link_status.ts

@@ -1,4 +1,4 @@
-import {WidgetType, Htape, Vtape, Left, Label, VerticalAdapt} from '@ui';
+import {WidgetType, Htape, Vtape, Label, VerticalAdapt} from '@ui';
 import linkStatusModel from './link_status.model';
 import LeftList from './left/left';
 import Right from './right/right';
@@ -14,12 +14,16 @@ const Widget: WidgetType = {
   },
   watch: {
     tab(tab: string) {
-      this.setVisible(tab === TAB_LINK_POOL);
+      this.linkStatus.setVisible(tab === TAB_LINK_POOL);
     },
   },
   render() {
     return {
       type: Htape,
+      invisible: true,
+      ref: _ref => {
+        this.linkStatus = _ref;
+      },
       items: [{
         el: {
           type: Vtape,