Add "Focus Activity Bar" action

fixes #108999

src/vs/base/browser/ui/actionbar/actionbar.ts

@@ -21,7 +21,7 @@ export const enum ActionsOrientation {
 }
 
 export interface ActionTrigger {
-	keys: KeyCode[];
+	keys?: KeyCode[];
 	keyDown: boolean;
 }
 
@@ -80,9 +80,9 @@ export class ActionBar extends Disposable implements IActionRunner {
 		this.options = options;
 		this._context = options.context ?? null;
 		this._orientation = this.options.orientation ?? ActionsOrientation.HORIZONTAL;
-		this._triggerKeys = this.options.triggerKeys ?? {
-			keys: [KeyCode.Enter, KeyCode.Space],
-			keyDown: false
+		this._triggerKeys = {
+			keyDown: this.options.triggerKeys?.keyDown ?? false,
+			keys: this.options.triggerKeys?.keys ?? [KeyCode.Enter, KeyCode.Space]
 		};
 
 		if (this.options.actionRunner) {

src/vs/workbench/browser/parts/activitybar/activitybarPart.ts

@@ -11,7 +11,7 @@ import { Part } from 'vs/workbench/browser/part';
 import { GlobalActivityActionViewItem, ViewContainerActivityAction, PlaceHolderToggleCompositePinnedAction, PlaceHolderViewContainerActivityAction, AccountsActionViewItem, HomeAction, HomeActionViewItem, ACCOUNTS_VISIBILITY_PREFERENCE_KEY } from 'vs/workbench/browser/parts/activitybar/activitybarActions';
 import { IBadge, NumberBadge } from 'vs/workbench/services/activity/common/activity';
 import { IWorkbenchLayoutService, Parts } from 'vs/workbench/services/layout/browser/layoutService';
-import { IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
+import { IInstantiationService, ServicesAccessor } from 'vs/platform/instantiation/common/instantiation';
 import { IDisposable, toDisposable, DisposableStore, Disposable } from 'vs/base/common/lifecycle';
 import { ToggleActivityBarVisibilityAction, ToggleMenuBarAction, ToggleSidebarPositionAction } from 'vs/workbench/browser/actions/layoutActions';
 import { IThemeService, IColorTheme } from 'vs/platform/theme/common/themeService';
@@ -41,6 +41,8 @@ import { Action, Separator } from 'vs/base/common/actions';
 import { Event } from 'vs/base/common/event';
 import { StandardKeyboardEvent } from 'vs/base/browser/keyboardEvent';
 import { KeyCode } from 'vs/base/common/keyCodes';
+import { Action2, registerAction2 } from 'vs/platform/actions/common/actions';
+import { CATEGORIES } from 'vs/workbench/common/actions';
 
 interface IPlaceholderViewContainer {
 	id: string;
@@ -1042,4 +1044,22 @@ export class ActivitybarPart extends Part implements IActivityBarService {
 	}
 }
 
+class FocusActivityBarAction extends Action2 {
+
+	constructor() {
+		super({
+			id: 'workbench.action.focusActivityBar',
+			title: { value: nls.localize('focusActivityBar', "Focus Activity Bar"), original: 'Focus Activity Bar' },
+			category: CATEGORIES.View,
+			f1: true
+		});
+	}
+
+	async run(accessor: ServicesAccessor): Promise<void> {
+		const activityBarService = accessor.get(IActivityBarService);
+		activityBarService.focusActivityBar();
+	}
+}
+
 registerSingleton(IActivityBarService, ActivitybarPart);
+registerAction2(FocusActivityBarAction);

src/vs/workbench/browser/parts/compositeBar.ts

@@ -227,7 +227,8 @@ export class CompositeBar extends Widget implements ICompositeBar {
 			ariaLabel: nls.localize('activityBarAriaLabel', "Active View Switcher"),
 			animated: false,
 			preventLoopNavigation: this.options.preventLoopNavigation,
-			ignoreOrientationForPreviousAndNextKey: true
+			ignoreOrientationForPreviousAndNextKey: true,
+			triggerKeys: { keyDown: true }
 		}));
 
 		// Contextmenu for composites