core/util/logging.js

   1 /*
   2  * noVNC: HTML5 VNC client
   3  * Copyright (C) 2012 Joel Martin
   4  * Licensed under MPL 2.0 (see LICENSE.txt)
   5  *
   6  * See README.md for usage and integration instructions.
   7  */
   8
   9 /*
  10  * Logging/debug routines
  11  */
  12
  13 var _log_level = 'warn';
  14
  15 var Debug = function (msg) {};
  16 var Info = function (msg) {};
  17 var Warn = function (msg) {};
  18 var Error = function (msg) {};
  19
  20 export function init_logging (level) {
  21     if (typeof level === 'undefined') {
  22         level = _log_level;
  23     } else {
  24         _log_level = level;
  25     }
  26
  27     Debug = Info = Warn = Error = function (msg) {};
  28     if (typeof window.console !== "undefined") {
  29         /* jshint -W086 */
  30         switch (level) {
  31             case 'debug':
  32                 Debug = console.debug.bind(window.console);
  33             case 'info':
  34                 Info  = console.info.bind(window.console);
  35             case 'warn':
  36                 Warn  = console.warn.bind(window.console);
  37             case 'error':
  38                 Error = console.error.bind(window.console);
  39             case 'none':
  40                 break;
  41             default:
  42                 throw new Error("invalid logging type '" + level + "'");
  43         }
  44         /* jshint +W086 */
  45     }
  46 };
  47 export function get_logging () {
  48     return _log_level;
  49 };
  50 export { Debug, Info, Warn, Error };
  51
  52 // Initialize logging level
  53 init_logging();