GenericFactory.js

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# -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# 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/
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# 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
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# The Original Code is the Generic Component Factory.
#
# The Initial Developer of the Original Code is Google Inc.
# Portions created by the Initial Developer are Copyright (C) 2006
# the Initial Developer. All Rights Reserved.
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# Contributor(s):
#   Ben Goodger <beng@google.com>
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function GenericComponentFactory(ctor, params) {
  this._ctor = ctor;
  this._params = params;
}
GenericComponentFactory.prototype = {
  _ctor: null,
  _params: null,
  
  createInstance: function GCF_createInstance(outer, iid) {
    if (outer != null)
      throw Cr.NS_ERROR_NO_AGGREGATION;
    return (new this._ctor(this._params)).QueryInterface(iid);
  },
  
  QueryInterface: function GCF_QueryInterface(iid) {
    if (iid.equals(Ci.nsIFactory) ||
        iid.equals(Ci.nsISupports)) 
      return this;
    throw Cr.NS_ERROR_NO_INTERFACE;
  }
};