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diff --git a/src/libs/xpcom18a4/xpcom/ds/nsIEnumerator.idl b/src/libs/xpcom18a4/xpcom/ds/nsIEnumerator.idl
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** 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 mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of 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 ***** */
+
+#include "nsISimpleEnumerator.idl"
+
+%{C++
+#define NS_ENUMERATOR_FALSE 1
+
+#ifdef VBOX_WITH_XPCOM_NAMESPACE_CLEANUP
+#define NS_NewEmptyEnumerator VBoxNsxpNS_NewEmptyEnumerator
+#endif /* VBOX_WITH_XPCOM_NAMESPACE_CLEANUP */
+
+extern "C" NS_COM nsresult
+NS_NewEmptyEnumerator(nsISimpleEnumerator** aResult);
+%}
+/*
+ * DO NOT USE THIS INTERFACE.  IT IS HORRIBLY BROKEN, USES NS_COMFALSE
+ * AND IS BASICALLY IMPOSSIBLE TO USE CORRECTLY THROUGH PROXIES OR
+ * XPCONNECT.  IF YOU SEE NEW USES OF THIS INTERFACE IN CODE YOU ARE
+ * REVIEWING, YOU SHOULD INSIST ON nsISimpleEnumerator.
+ *
+ * DON'T MAKE ME COME OVER THERE.
+ */
+[scriptable, uuid(ad385286-cbc4-11d2-8cca-0060b0fc14a3)]
+interface nsIEnumerator : nsISupports {
+  /** First will reset the list. will return NS_FAILED if no items
+   */
+  void first();
+
+  /** Next will advance the list. will return failed if already at end
+   */
+  void next();
+
+  /** CurrentItem will return the CurrentItem item it will fail if the 
+   *  list is empty
+   */
+  nsISupports currentItem();
+
+  /** return if the collection is at the end.  that is the beginning following 
+   *  a call to Prev and it is the end of the list following a call to next
+   */
+  void isDone();
+};
+
+[uuid(75f158a0-cadd-11d2-8cca-0060b0fc14a3)]
+interface nsIBidirectionalEnumerator : nsIEnumerator {
+
+  /** Last will reset the list to the end. will return NS_FAILED if no items
+   */
+  void last();
+
+  /** Prev will decrement the list. will return failed if already at beginning
+   */
+  void prev();
+};