Merge from master

extensions/git/src/api/extension.ts

@@ -0,0 +1,76 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { Model } from '../model';
+import { GitExtension, Repository, API } from './git';
+import { ApiRepository, ApiImpl } from './api1';
+import { Event, EventEmitter } from 'vscode';
+import { latchEvent } from '../util';
+
+export function deprecated(_target: any, key: string, descriptor: any): void {
+	if (typeof descriptor.value !== 'function') {
+		throw new Error('not supported');
+	}
+
+	const fn = descriptor.value;
+	descriptor.value = function () {
+		console.warn(`Git extension API method '${key}' is deprecated.`);
+		return fn.apply(this, arguments);
+	};
+}
+
+export class GitExtensionImpl implements GitExtension {
+
+	enabled: boolean = false;
+
+	private _onDidChangeEnablement = new EventEmitter<boolean>();
+	readonly onDidChangeEnablement: Event<boolean> = latchEvent(this._onDidChangeEnablement.event);
+
+	private _model: Model | undefined = undefined;
+
+	set model(model: Model | undefined) {
+		this._model = model;
+
+		this.enabled = !!model;
+		this._onDidChangeEnablement.fire(this.enabled);
+	}
+
+	constructor(model?: Model) {
+		if (model) {
+			this.enabled = true;
+			this._model = model;
+		}
+	}
+
+	@deprecated
+	async getGitPath(): Promise<string> {
+		if (!this._model) {
+			throw new Error('Git model not found');
+		}
+
+		return this._model.git.path;
+	}
+
+	@deprecated
+	async getRepositories(): Promise<Repository[]> {
+		if (!this._model) {
+			throw new Error('Git model not found');
+		}
+
+		return this._model.repositories.map(repository => new ApiRepository(repository));
+	}
+
+	getAPI(version: number): API {
+		if (!this._model) {
+			throw new Error('Git model not found');
+		}
+
+		if (version !== 1) {
+			throw new Error(`No API version ${version} found.`);
+		}
+
+		return new ApiImpl(this._model);
+	}
+}