From 0606772514672dfbf6b7fcd2789a33ea13283531 Mon Sep 17 00:00:00 2001
From: Lucy Zhang <t-luz@microsoft.com>
Date: Fri, 19 Jul 2019 14:39:58 -0700
Subject: [PATCH] Show external link url when hovering over book tree item
 (#6441)

* show url when hovering over tree item

* show only for external links

* show url for external links only
---
 extensions/notebook/src/book/bookTreeItem.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/extensions/notebook/src/book/bookTreeItem.ts b/extensions/notebook/src/book/bookTreeItem.ts
index 86fb760a3c..29d9592f16 100644
--- a/extensions/notebook/src/book/bookTreeItem.ts
+++ b/extensions/notebook/src/book/bookTreeItem.ts
@@ -119,4 +119,13 @@ export class BookTreeItem extends vscode.TreeItem {
 	public get nextUri(): string {
 		return this._nextUri;
 	}
+
+	get tooltip(): string {
+		if (this.book.type === BookTreeItemType.ExternalLink) {
+			return `${this._uri}`;
+		}
+		else {
+			return undefined;
+		}
+	}
 }
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