gridview: add view nested

src/vs/base/browser/ui/grid/gridview.ts

@@ -233,6 +233,7 @@ export class GridView<T extends IView> implements IGrid<T>, IDisposable {
 
 			const newParent = new BranchNode<T>(parent.orientation);
 			grandParent.addChild(newParent, 20, parentIndex);
+			newParent.addChild(parent, 20, 0);
 			newParent.addChild(node, size, index);
 		}
 	}

src/vs/base/test/browser/ui/grid/gridview.test.ts

@@ -107,4 +107,24 @@ suite('GridView', function () {
 
 		gridview.dispose();
 	});
+
+	test('gridview addView nested', function () {
+		const gridview = new GridView(container);
+
+		const views = [
+			new TestView(20, 20),
+			[
+				new TestView(20, 20),
+				new TestView(20, 20)
+			]
+		];
+
+		gridview.addView(views[0] as IView, 200, [0]);
+		gridview.addView(views[1][0] as IView, 200, [1]);
+		gridview.addView(views[1][1] as IView, 200, [1, 1]);
+
+		assert.deepEqual(nodesToArrays(gridview.getViews()), views);
+
+		gridview.dispose();
+	});
 });
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