Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/extensions/git/src/log.ts

@@ -0,0 +1,50 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { Event, EventEmitter } from 'vscode';
+
+/**
+ * The severity level of a log message
+ */
+export enum LogLevel {
+	Trace = 1,
+	Debug = 2,
+	Info = 3,
+	Warning = 4,
+	Error = 5,
+	Critical = 6,
+	Off = 7
+}
+
+let _logLevel: LogLevel = LogLevel.Info;
+const _onDidChangeLogLevel = new EventEmitter<LogLevel>();
+
+export const Log = {
+	/**
+	 * Current logging level.
+	 */
+	get logLevel(): LogLevel {
+		return _logLevel;
+	},
+
+	/**
+	 * Current logging level.
+	 */
+	set logLevel(logLevel: LogLevel) {
+		if (_logLevel === logLevel) {
+			return;
+		}
+
+		_logLevel = logLevel;
+		_onDidChangeLogLevel.fire(logLevel);
+	},
+
+	/**
+	 * An [event](#Event) that fires when the log level has changed.
+	 */
+	get onDidChangeLogLevel(): Event<LogLevel> {
+		return _onDidChangeLogLevel.event;
+	}
+};