Pull request #3727: 无jira任务 fix:补充MultiLayerDownListCombo的抛出事件

Merge in VISUAL/fineui from ~CLAIRE.TANG/fineui:master to master

* commit '3f4f732e333ec92e707dd6c730576429251bb622':
  无jira任务 fix:补充MultiLayerDownListCombo的抛出事件

packages/fineui/src/widget/multilayerdownlist/combo.downlist.js

@@ -10,6 +10,7 @@ export class MultiLayerDownListCombo extends Widget {
     static EVENT_CHANGE = "EVENT_CHANGE";
     static EVENT_SON_VALUE_CHANGE = "EVENT_SON_VALUE_CHANGE";
     static EVENT_BEFORE_POPUPVIEW = "EVENT_BEFORE_POPUPVIEW";
+    static EVENT_BEFORE_HIDEVIEW = "EVENT_BEFORE_HIDEVIEW";
 
     _defaultConfig() {
         return extend(super._defaultConfig(...arguments), {
@@ -70,6 +71,10 @@ export class MultiLayerDownListCombo extends Widget {
         this.downlistcombo.on(Combo.EVENT_BEFORE_POPUPVIEW, () => {
             this.fireEvent(MultiLayerDownListCombo.EVENT_BEFORE_POPUPVIEW);
         });
+
+        this.downlistcombo.on(Combo.EVENT_BEFORE_HIDEVIEW, () => {
+            this.fireEvent(MultiLayerDownListCombo.EVENT_BEFORE_HIDEVIEW);
+        });
     }
 
     hideView() {

packages/fineui/typescript/widget/multilayerdownlist/multilayerdownlist.combo.ts

@@ -7,6 +7,7 @@ export declare class MultiLayerDownListCombo extends Widget {
     static EVENT_CHANGE: string;
     static EVENT_SON_VALUE_CHANGE: string;
     static EVENT_BEFORE_POPUPVIEW: string;
+    static EVENT_BEFORE_HIDEVIEW: string;
 
     props: {
         adjustLength: Combo['props']['adjustLength'];