From aa1e29286a8c00df0ffdceeb4603fbabf67b7893 Mon Sep 17 00:00:00 2001
From: Alex Dima <alexdima@microsoft.com>
Date: Mon, 16 Sep 2019 15:54:49 +0200
Subject: [PATCH] Prevent back/forward gestures on macos

---
 src/vs/base/browser/dom.ts                          | 13 +++++++------
 .../viewParts/editorScrollbar/editorScrollbar.ts    |  1 -
 src/vs/workbench/browser/web.main.ts                |  5 +++++
 3 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/src/vs/base/browser/dom.ts b/src/vs/base/browser/dom.ts
index 3e141077dce8f..9887331522f8b 100644
--- a/src/vs/base/browser/dom.ts
+++ b/src/vs/base/browser/dom.ts
@@ -205,14 +205,14 @@ class DomListener implements IDisposable {
 	private _handler: (e: any) => void;
 	private _node: Element | Window | Document;
 	private readonly _type: string;
-	private readonly _useCapture: boolean;
+	private readonly _options: boolean | AddEventListenerOptions;
 
-	constructor(node: Element | Window | Document, type: string, handler: (e: any) => void, useCapture?: boolean) {
+	constructor(node: Element | Window | Document, type: string, handler: (e: any) => void, options?: boolean | AddEventListenerOptions) {
 		this._node = node;
 		this._type = type;
 		this._handler = handler;
-		this._useCapture = (useCapture || false);
-		this._node.addEventListener(this._type, this._handler, this._useCapture);
+		this._options = (options || false);
+		this._node.addEventListener(this._type, this._handler, this._options);
 	}
 
 	public dispose(): void {
@@ -221,7 +221,7 @@ class DomListener implements IDisposable {
 			return;
 		}
 
-		this._node.removeEventListener(this._type, this._handler, this._useCapture);
+		this._node.removeEventListener(this._type, this._handler, this._options);
 
 		// Prevent leakers from holding on to the dom or handler func
 		this._node = null!;
@@ -231,7 +231,8 @@ class DomListener implements IDisposable {
 
 export function addDisposableListener<K extends keyof GlobalEventHandlersEventMap>(node: Element | Window | Document, type: K, handler: (event: GlobalEventHandlersEventMap[K]) => void, useCapture?: boolean): IDisposable;
 export function addDisposableListener(node: Element | Window | Document, type: string, handler: (event: any) => void, useCapture?: boolean): IDisposable;
-export function addDisposableListener(node: Element | Window | Document, type: string, handler: (event: any) => void, useCapture?: boolean): IDisposable {
+export function addDisposableListener(node: Element | Window | Document, type: string, handler: (event: any) => void, useCapture: AddEventListenerOptions): IDisposable;
+export function addDisposableListener(node: Element | Window | Document, type: string, handler: (event: any) => void, useCapture?: boolean | AddEventListenerOptions): IDisposable {
 	return new DomListener(node, type, handler, useCapture);
 }
 
diff --git a/src/vs/editor/browser/viewParts/editorScrollbar/editorScrollbar.ts b/src/vs/editor/browser/viewParts/editorScrollbar/editorScrollbar.ts
index 4c95ac9934cb4..d816f1265e829 100644
--- a/src/vs/editor/browser/viewParts/editorScrollbar/editorScrollbar.ts
+++ b/src/vs/editor/browser/viewParts/editorScrollbar/editorScrollbar.ts
@@ -36,7 +36,6 @@ export class EditorScrollbar extends ViewPart {
 		const fastScrollSensitivity = options.get(EditorOption.fastScrollSensitivity);
 
 		const scrollbarOptions: ScrollableElementCreationOptions = {
-			alwaysConsumeMouseWheel: true,
 			listenOnDomNode: viewDomNode.domNode,
 			className: 'editor-scrollable' + ' ' + getThemeTypeSelector(context.theme.type),
 			useShadows: false,
diff --git a/src/vs/workbench/browser/web.main.ts b/src/vs/workbench/browser/web.main.ts
index dc2ea7b6a7bf1..be720535c8575 100644
--- a/src/vs/workbench/browser/web.main.ts
+++ b/src/vs/workbench/browser/web.main.ts
@@ -75,6 +75,11 @@ class CodeRendererMain extends Disposable {
 		// Layout
 		this._register(addDisposableListener(window, EventType.RESIZE, () => workbench.layout()));
 
+		// Prevent the back/forward gestures in macOS
+		this._register(addDisposableListener(this.domElement, EventType.WHEEL, (e) => {
+			e.preventDefault();
+		}, { passive: false }));
+
 		// Workbench Lifecycle
 		this._register(workbench.onBeforeShutdown(event => {
 			if (services.storageService.hasPendingUpdate) {