proper checked indicator for context menu actions

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

@@ -200,6 +200,7 @@ export class Separator extends Action {
 	constructor(label?: string, order?) {
 		super(Separator.ID, label, label ? 'separator text' : 'separator');
 		this.checked = false;
+		this.radio = false;
 		this.enabled = false;
 		this.order = order;
 	}
@@ -308,6 +309,14 @@ export class ActionItem extends BaseActionItem {
 			this.$e.removeClass('checked');
 		}
 	}
+
+	public _updateRadio(): void {
+		if (this.getAction().radio) {
+			this.$e.addClass('radio');
+		} else {
+			this.$e.removeClass('radio');
+		}
+	}
 }
 
 export enum ActionsOrientation {

src/vs/base/common/actions.ts

@@ -17,6 +17,7 @@ export interface IAction extends IDisposable {
 	class: string;
 	enabled: boolean;
 	checked: boolean;
+	radio: boolean;
 	run(event?: any): TPromise<any>;
 }
 
@@ -67,6 +68,7 @@ export interface IActionChangeEvent {
 	class?: string;
 	enabled?: boolean;
 	checked?: boolean;
+	radio?: boolean;
 }
 
 export class Action implements IAction {
@@ -78,6 +80,7 @@ export class Action implements IAction {
 	protected _cssClass: string;
 	protected _enabled: boolean;
 	protected _checked: boolean;
+	protected _radio: boolean;
 	protected _order: number;
 	protected _actionCallback: (event?: any) => TPromise<any>;
 
@@ -169,6 +172,14 @@ export class Action implements IAction {
 		this._setChecked(value);
 	}
 
+	public get radio(): boolean {
+		return this._radio;
+	}
+
+	public set radio(value: boolean) {
+		this._setRadio(value);
+	}
+
 	protected _setChecked(value: boolean): void {
 		if (this._checked !== value) {
 			this._checked = value;
@@ -176,6 +187,13 @@ export class Action implements IAction {
 		}
 	}
 
+	protected _setRadio(value: boolean): void {
+		if (this._radio !== value) {
+			this._radio = value;
+			this._onDidChange.fire({ radio: value });
+		}
+	}
+
 	public get order(): number {
 		return this._order;
 	}

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

@@ -163,7 +163,7 @@ export class ViewletOverflowActivityActionItem extends BaseActionItem {
 		const activeViewlet = this.viewletService.getActiveViewlet();
 
 		this.actions.forEach(action => {
-			action.checked = activeViewlet && activeViewlet.getId() === action.id;
+			action.radio = activeViewlet && activeViewlet.getId() === action.id;
 
 			const badge = this.getBadge(action.viewlet);
 			let suffix: string | number;

src/vs/workbench/services/contextview/electron-browser/contextmenuService.ts

@@ -81,8 +81,8 @@ export class ContextMenuService implements IContextMenuService {
 
 				const item = new remote.MenuItem({
 					label: e.label,
-					checked: !!e.checked,
-					type: !!e.checked ? 'radio' : void 0,
+					checked: !!e.checked || !!e.radio,
+					type: !!e.checked ? 'checkbox' : !!e.radio ? 'radio' : void 0,
 					accelerator,
 					enabled: !!e.enabled,
 					click: (menuItem, win, event) => {