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lightning-sunbird  0.9+nobinonly
factory.py
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00001 # ***** BEGIN LICENSE BLOCK *****
00002 # Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003 #
00004 # The contents of this file are subject to the Mozilla Public License Version
00005 # 1.1 (the "License"); you may not use this file except in compliance with
00006 # the License. You may obtain a copy of the License at
00007 # http://www.mozilla.org/MPL/
00008 #
00009 # Software distributed under the License is distributed on an "AS IS" basis,
00010 # WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011 # for the specific language governing rights and limitations under the
00012 # License.
00013 #
00014 # The Original Code is the Python XPCOM language bindings.
00015 #
00016 # The Initial Developer of the Original Code is
00017 # ActiveState Tool Corp.
00018 # Portions created by the Initial Developer are Copyright (C) 2000, 2001
00019 # the Initial Developer. All Rights Reserved.
00020 #
00021 # Contributor(s):
00022 #        Mark Hammond <MarkH@ActiveState.com> (original author)
00023 #
00024 # Alternatively, the contents of this file may be used under the terms of
00025 # either the GNU General Public License Version 2 or later (the "GPL"), or
00026 # the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027 # in which case the provisions of the GPL or the LGPL are applicable instead
00028 # of those above. If you wish to allow use of your version of this file only
00029 # under the terms of either the GPL or the LGPL, and not to allow others to
00030 # use your version of this file under the terms of the MPL, indicate your
00031 # decision by deleting the provisions above and replace them with the notice
00032 # and other provisions required by the GPL or the LGPL. If you do not delete
00033 # the provisions above, a recipient may use your version of this file under
00034 # the terms of any one of the MPL, the GPL or the LGPL.
00035 #
00036 # ***** END LICENSE BLOCK *****
00037 
00038 # Class factory
00039 #
00040 # Hardly worth its own source file!
00041 import xpcom
00042 from xpcom import components, nsError, _xpcom
00043 
00044 
00045 class Factory:
00046     _com_interfaces_ = components.interfaces.nsIFactory
00047     # This will only ever be constructed via other Python code,
00048     # so we can have ctor args.
00049     def __init__(self, klass):
00050         self.klass = klass
00051 
00052     def createInstance(self, outer, iid):
00053         if outer is not None:
00054             raise xpcom.ServerException(nsError.NS_ERROR_NO_AGGREGATION)
00055 
00056         if xpcom.verbose:
00057             print "Python Factory creating", self.klass.__name__
00058         try:
00059             return self.klass()
00060         except:
00061             # An exception here may not be obvious to the user - none
00062             # of their code has been called yet.  It can be handy on
00063             # failure to tell the user what class failed!
00064             _xpcom.LogWarning("Creation of class '%r' failed!\nException details follow\n" % (self.klass,))
00065             raise
00066 
00067     def lockServer(self, lock):
00068         if xpcom.verbose:
00069             print "Python Factory LockServer called -", lock
00070