From 413005609802bdc0ecf4fb65dde3fbfa6cf51cf6 Mon Sep 17 00:00:00 2001
From: Joao Moreno <joao.moreno@microsoft.com>
Date: Thu, 30 Jan 2020 17:11:51 +0100
Subject: [PATCH] do not let uncollapsible node collapse

---
 src/vs/base/browser/ui/tree/indexTreeModel.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/vs/base/browser/ui/tree/indexTreeModel.ts b/src/vs/base/browser/ui/tree/indexTreeModel.ts
index 42d8ce98b33..2688adbe010 100644
--- a/src/vs/base/browser/ui/tree/indexTreeModel.ts
+++ b/src/vs/base/browser/ui/tree/indexTreeModel.ts
@@ -234,6 +234,10 @@ export class IndexTreeModel<T extends Exclude<any, undefined>, TFilterData = voi
 	setCollapsed(location: number[], collapsed?: boolean, recursive?: boolean): boolean {
 		const node = this.getTreeNode(location);
 
+		if (!node.collapsible) {
+			return false;
+		}
+
 		if (typeof collapsed === 'undefined') {
 			collapsed = !node.collapsed;
 		}