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lightning-sunbird  0.9+nobinonly
enumerator.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
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00026 # the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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00036 # ***** END LICENSE BLOCK *****
00037 
00038 from xpcom import components
00039 
00040 # This class is created by Python components when it
00041 # needs to return an enumerator.
00042 # For example, a component may implement a function:
00043 #  nsISimpleEnumerator enumSomething();
00044 # This could could simply say:
00045 # return SimpleEnumerator([something1, something2, something3])
00046 class SimpleEnumerator:
00047     _com_interfaces_ = [components.interfaces.nsISimpleEnumerator]
00048 
00049     def __init__(self, data):
00050         self._data = data
00051         self._index = 0
00052 
00053     def hasMoreElements(self):
00054         return self._index < len(self._data)
00055     
00056     def getNext(self):
00057         self._index = self._index + 1
00058         return self._data[self._index-1]