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singleton.js
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singleton.js
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/* ***** BEGIN LICENSE BLOCK *****
*
* "The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Zindus Sync.
*
* The Initial Developer of the Original Code is Toolware Pty Ltd.
*
* Portions created by Initial Developer are Copyright (C) 2007-2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Leni Mayo
*
* ***** END LICENSE BLOCK *****/
// Handy place to keep stuff that we only ever need one of
// and for which we want to delay construction until after all .js files are loaded.
//
function singleton() {
if (typeof (singleton.m_instance) == "undefined")
singleton.m_instance = new SingletonInstance();
return singleton.m_instance;
}
function SingletonInstance()
{
this.m_preferences = new MozillaPreferences();
this.m_logger_global = new Logger(this.get_loglevel_from_preference(), "global");
this.m_logger_no_prefix = new Logger(this.get_loglevel_from_preference(), "");
}
SingletonInstance.prototype = {
preferences : function() {
return this.m_preferences;
},
logger : function(type) {
return (type && type == 'info') ? this.m_logger_no_prefix : this.m_logger_global;
},
get_loglevel_from_preference : function() {
return (this.m_preferences.getCharPrefOrNull(this.m_preferences.branch(),
PrefSet.GENERAL + "." + PrefSet.GENERAL_AS_VERBOSE_LOGGING ) == "true") ? Logger.DEBUG : Logger.INFO;
}
};