JSY-25995 feat: TextValueCombo 支持 EVENT_BEFORE_POPUPVIEW 事件监听

src/case/combo/textvaluecombo/combo.textvalue.js

@@ -130,6 +130,7 @@ BI.TextValueCombo = BI.inherit(BI.Widget, {
                     eventName: BI.Combo.EVENT_BEFORE_POPUPVIEW,
                     action: () => {
                         changeTag = false;
+                        this.fireEvent(BI.TextValueCombo.EVENT_BEFORE_POPUPVIEW);
                     }
                 }, {
                     eventName: BI.Combo.EVENT_AFTER_HIDEVIEW,
@@ -209,5 +210,6 @@ BI.TextValueCombo = BI.inherit(BI.Widget, {
         this.combo.populate(items);
     }
 });
+BI.TextValueCombo.EVENT_BEFORE_POPUPVIEW = "EVENT_BEFORE_POPUPVIEW";
 BI.TextValueCombo.EVENT_CHANGE = "EVENT_CHANGE";
 BI.shortcut("bi.text_value_combo", BI.TextValueCombo);

typescript/case/combo/combo.textvalue.ts

@@ -4,6 +4,7 @@ export declare class TextValueCombo extends Widget {
     static xtype: string;
 
     static EVENT_CHANGE: string;
+    static EVENT_BEFORE_POPUPVIEW: string;
     
     clear(): void;
     setText(text: string): void;