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         switch (level) {
  30             case 'debug':
  31                 Debug = console.debug.bind(window.console);
  32             case 'info':
  33                 Info  = console.info.bind(window.console);
  34             case 'warn':
  35                 Warn  = console.warn.bind(window.console);
  36             case 'error':
  37                 Error = console.error.bind(window.console);
  38             case 'none':
  39                 break;
  40             default:
  41                 throw new Error("invalid logging type '" + level + "'");
  42         }
  43     }
  44 };
  45 export function get_logging () {
  46     return _log_level;
  47 };
  48 export { Debug, Info, Warn, Error };
  49
  50 // Initialize logging level
  51 init_logging();