Revert "Fox microsoft#39340"

This reverts commit 101f7a0.

src/vs/workbench/browser/parts/views/treeView.ts

@@ -36,7 +36,6 @@ export class TreeView extends TreeViewsViewletPanel {
 	private treeInputPromise: TPromise<void>;
 
 	private dataProviderElementChangeListener: IDisposable;
-	private elementsToRefresh: ITreeItem[] = [];
 
 	constructor(
 		options: IViewletViewOptions,
@@ -114,6 +113,10 @@ export class TreeView extends TreeViewsViewletPanel {
 		return createActionItem(action, this.keybindingService, this.messageService);
 	}
 
+	public setVisible(visible: boolean): TPromise<void> {
+		return super.setVisible(visible);
+	}
+
 	private setInput(): TPromise<void> {
 		if (this.tree) {
 			if (!this.treeInputPromise) {
@@ -169,30 +172,15 @@ export class TreeView extends TreeViewsViewletPanel {
 		}
 	}
 
-	protected updateTreeVisibility(tree: WorkbenchTree, isVisible: boolean): void {
-		super.updateTreeVisibility(tree, isVisible);
-		if (isVisible && this.elementsToRefresh.length) {
-			this.doRefresh(this.elementsToRefresh);
-			this.elementsToRefresh = [];
-		}
-	}
-
 	private refresh(elements: ITreeItem[]): void {
-		if (!elements) {
+		if (elements) {
+			for (const element of elements) {
+				this.tree.refresh(element);
+			}
+		} else {
 			const root: ITreeItem = this.tree.getInput();
 			root.children = null; // reset children
-			elements = [root];
-		}
-		if (this.isVisible() && this.isExpanded()) {
-			this.doRefresh(elements);
-		} else {
-			this.elementsToRefresh.push(...elements);
-		}
-	}
-
-	private doRefresh(elements: ITreeItem[]): void {
-		for (const element of elements) {
-			this.tree.refresh(element);
+			this.tree.refresh(root);
 		}
 	}
 

src/vs/workbench/browser/parts/views/viewsViewlet.ts

@@ -214,7 +214,7 @@ export abstract class TreeViewsViewletPanel extends ViewsViewletPanel {
 		super.dispose();
 	}
 
-	protected updateTreeVisibility(tree: WorkbenchTree, isVisible: boolean): void {
+	private updateTreeVisibility(tree: WorkbenchTree, isVisible: boolean): void {
 		if (!tree) {
 			return;
 		}