REPORT-60473 fix:单选下拉树加上showView

src/widget/multilayerselecttree/multilayerselecttree.combo.js

@@ -246,6 +246,10 @@ BI.MultiLayerSelectTreeCombo = BI.inherit(BI.Widget, {
 
     blur: function () {
         this.trigger.blur();
+    },
+
+    showView: function () {
+        this.combo.showView();
     }
 });
 

src/widget/multilayersingletree/multilayersingletree.combo.js

@@ -247,6 +247,10 @@ BI.MultiLayerSingleTreeCombo = BI.inherit(BI.Widget, {
 
     blur: function () {
         this.trigger.blur();
+    },
+
+    showView: function () {
+        this.combo.showView();
     }
 });
 

typescript/widget/multilayerselecttree/multilayerselecttree.combo.ts

@@ -19,4 +19,6 @@ export declare class MultiLayerSelectTreeCombo extends Widget {
     focus(): void;
 
     blur(): void;
+
+    showView(): void;
 }

typescript/widget/multilayersingletree/multilayersingletree.combo.ts

@@ -19,4 +19,6 @@ export declare class MultiLayerSingleTreeCombo extends Widget {
     focus(): void;
 
     blur(): void;
+
+    showView(): void;
 }