update listener name

Signed-off-by: vince-fugnitto <[email protected]>

packages/plugin-ext/src/main/browser/webview/webview-context-keys.ts

@@ -25,7 +25,7 @@ export class WebviewContextKeys {
     /**
      * Context key representing the `viewType` of the active `WebviewWidget`, if any.
      */
-    activeWebviewPanelId: ContextKey<string | undefined>;
+    activeWebviewPanelId: ContextKey<string>;
 
     @inject(ApplicationShell)
     protected applicationShell: ApplicationShell;
@@ -35,15 +35,15 @@ export class WebviewContextKeys {
 
     @postConstruct()
     protected postConstruct(): void {
-        this.activeWebviewPanelId = this.contextKeyService.createKey('activeWebviewPanelId', undefined);
-        this.applicationShell.onDidChangeCurrentWidget(this.handleDidChangeActiveWidget, this);
+        this.activeWebviewPanelId = this.contextKeyService.createKey('activeWebviewPanelId', '');
+        this.applicationShell.onDidChangeCurrentWidget(this.handleDidChangeCurrentWidget, this);
     }
 
-    protected handleDidChangeActiveWidget(change: FocusTracker.IChangedArgs<Widget>): void {
+    protected handleDidChangeCurrentWidget(change: FocusTracker.IChangedArgs<Widget>): void {
         if (change.newValue instanceof WebviewWidget) {
             this.activeWebviewPanelId.set(change.newValue.viewType);
         } else {
-            this.activeWebviewPanelId.set(undefined);
+            this.activeWebviewPanelId.set('');
         }
     }
 }