gecko-dev/browser/components/feeds/src/GenericFactory.js

63 lines
2.4 KiB
JavaScript
Executable file

# -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
# ***** BEGIN LICENSE BLOCK *****
# 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/
#
# 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 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.
#
# Contributor(s):
# Ben Goodger <beng@google.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK ***** */
/**
* An object implementing nsIFactory that can construct other objects upon
* createInstance, passing a set of parameters to that object's constructor.
*/
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;
}
};