refactor keybindings merge

src/vs/workbench/services/userDataSync/common/keybindingsMerge.ts

@@ -0,0 +1,32 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { parse } from 'vs/base/common/json';
+import { IUserFriendlyKeybinding, IKeybindingService } from 'vs/platform/keybinding/common/keybinding';
+import { IUserKeybindingsResolverService } from 'vs/platform/userDataSync/common/userDataSync';
+import { IStringDictionary } from 'vs/base/common/collections';
+import { registerSingleton } from 'vs/platform/instantiation/common/extensions';
+
+export class UserKeybindingsResolverService implements IUserKeybindingsResolverService {
+
+	_serviceBrand: undefined;
+
+	constructor(
+		@IKeybindingService private readonly keybindingsService: IKeybindingService
+	) { }
+
+	public async resolveUserKeybindings(localContent: string, remoteContent: string, baseContent: string | null): Promise<IStringDictionary<string>> {
+		const local = <IUserFriendlyKeybinding[]>parse(localContent);
+		const remote = <IUserFriendlyKeybinding[]>parse(remoteContent);
+		const base = baseContent ? <IUserFriendlyKeybinding[]>parse(baseContent) : null;
+		const keys: IStringDictionary<string> = {};
+		for (const keybinding of [...local, ...remote, ...(base || [])]) {
+			keys[keybinding.key] = this.keybindingsService.resolveUserBinding(keybinding.key).map(part => part.getUserSettingsLabel()).join(' ');
+		}
+		return keys;
+	}
+}
+
+registerSingleton(IUserKeybindingsResolverService, UserKeybindingsResolverService);