From e46521cafc5c4d4af6b8ef9073acad7b5ffc537f Mon Sep 17 00:00:00 2001
From: Maddy <12754347+MaddyDev@users.noreply.github.com>
Date: Mon, 18 May 2020 13:46:55 -0700
Subject: [PATCH] open viewlet on showPreview (#10474)

* open viewlet on shoePreview

* on showPreview reveal explorer
---
 extensions/notebook/src/book/bookTreeView.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extensions/notebook/src/book/bookTreeView.ts b/extensions/notebook/src/book/bookTreeView.ts
index a0e1d0c6e3..f8d989f387 100644
--- a/extensions/notebook/src/book/bookTreeView.ts
+++ b/extensions/notebook/src/book/bookTreeView.ts
@@ -114,6 +114,7 @@ export class BookTreeViewProvider implements vscode.TreeDataProvider<BookTreeIte
 			}
 
 			if (showPreview) {
+				this._bookViewer.reveal(this.currentBook.bookItems[0], { expand: vscode.TreeItemCollapsibleState.Expanded, focus: true, select: true });
 				await this.showPreviewFile(urlToOpen);
 			}