Extract remote source provider registry into the vscode.git-base extension (#137656)

extensions/git-base/src/api/api1.ts

@@ -0,0 +1,37 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { Disposable, commands } from 'vscode';
+import { Model } from '../model';
+import { pickRemoteSource } from '../remoteSource';
+import { GitBaseExtensionImpl } from './extension';
+import { API, PickRemoteSourceOptions, PickRemoteSourceResult, RemoteSourceProvider } from './git-base';
+
+export class ApiImpl implements API {
+
+	constructor(private _model: Model) { }
+
+	pickRemoteSource(options: PickRemoteSourceOptions): Promise<PickRemoteSourceResult | string | undefined> {
+		return pickRemoteSource(this._model, options as any);
+	}
+
+	registerRemoteSourceProvider(provider: RemoteSourceProvider): Disposable {
+		return this._model.registerRemoteSourceProvider(provider);
+	}
+}
+
+export function registerAPICommands(extension: GitBaseExtensionImpl): Disposable {
+	const disposables: Disposable[] = [];
+
+	disposables.push(commands.registerCommand('git-base.api.getRemoteSources', (opts?: PickRemoteSourceOptions) => {
+		if (!extension.model) {
+			return;
+		}
+
+		return pickRemoteSource(extension.model, opts as any);
+	}));
+
+	return Disposable.from(...disposables);
+}