show a root element where there is outline-breadcrumbs but none are currently selected

src/vs/workbench/browser/parts/editor/breadcrumbsControl.ts

@@ -71,6 +71,13 @@ class OutlineItem extends BreadcrumbsItem {
 
 	render(container: HTMLElement): void {
 		const { element, outline } = this.element;
+
+		if (element === outline) {
+			const element = dom.$('span', undefined, '…');
+			container.appendChild(element);
+			return;
+		}
+
 		const templateId = outline.treeConfig.delegate.getTemplateId(element);
 		const renderer = outline.treeConfig.renderers.find(renderer => renderer.templateId === templateId);
 		if (!renderer) {

src/vs/workbench/browser/parts/editor/breadcrumbsModel.ts

@@ -29,7 +29,7 @@ type FileInfo = { path: FileElement[], folder?: IWorkspaceFolder };
 
 export class OutlineElement2 {
 	constructor(
-		readonly element: any,
+		readonly element: IOutline<any> | any,
 		readonly outline: IOutline<any>
 	) { }
 }
@@ -108,6 +108,8 @@ export class BreadcrumbsModel {
 			for (let element of this._currentOutline.treeConfig.parentChainProvider.getBreadcrumbElements(activeEntry)) {
 				result.push(new OutlineElement2(element, this._currentOutline));
 			}
+		} else if (!this._currentOutline.isEmpty) {
+			result.push(new OutlineElement2(this._currentOutline, this._currentOutline));
 		}
 
 		return result;

src/vs/workbench/browser/parts/editor/breadcrumbsPicker.ts

@@ -510,10 +510,10 @@ export class BreadcrumbsOutlinePicker extends BreadcrumbsPicker {
 		// this._outlineComparator.type = this._getOutlineItemCompareType(overrideConfiguration);
 
 		tree.setInput(input.outline);
-		// if (element !== model) {
-		tree.reveal(input.element, 0.5);
-		tree.setFocus([input.element], this._fakeEvent);
-		// }
+		if (input.element !== input.outline) {
+			tree.reveal(input.element, 0.5);
+			tree.setFocus([input.element], this._fakeEvent);
+		}
 		tree.domFocus();
 
 		return Promise.resolve();