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# ***** 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 Python XPCOM language bindings.
#
# The Initial Developer of the Original Code is
# ActiveState Tool Corp.
# Portions created by the Initial Developer are Copyright (C) 2000, 2001
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#        Mark Hammond <MarkH@ActiveState.com> (original author)
#
# 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 *****

# Class factory
#
# Hardly worth its own source file!
import xpcom
from xpcom import components, nsError, _xpcom, logger

class Factory:
    _com_interfaces_ = components.interfaces.nsIFactory
    # This will only ever be constructed via other Python code,
    # so we can have ctor args.
    def __init__(self, klass):
        self.klass = klass

    def createInstance(self, outer, iid):
        if outer is not None:
            raise xpcom.ServerException(nsError.NS_ERROR_NO_AGGREGATION)

        logger.debug("Python Factory creating %s", self.klass.__name__)
        try:
            return self.klass()
        except:
            # An exception here may not be obvious to the user - none
            # of their code has been called yet.  It can be handy on
            # failure to tell the user what class failed!
            logger.error("Creation of class '%r' failed!\nException details follow\n",
                           self.klass)
            # The framework itself will also report the error.
            raise

    def lockServer(self, lock):
        logger.debug("Python Factory LockServer called '%s'", lock)