| /* -*- 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 XPCOM Array implementation. |
| * |
| * The Initial Developer of the Original Code is |
| * Netscape Communications Corp. |
| * Portions created by the Initial Developer are Copyright (C) 2002 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Alec Flett <alecf@netscape.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 |
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| * 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 ***** */ |
| |
| #ifndef nsArrayUtils_h__ |
| #define nsArrayUtils_h__ |
| |
| #include "nsCOMPtr.h" |
| #include "nsIArray.h" |
| |
| // helper class for do_QueryElementAt |
| class NS_COM_GLUE nsQueryArrayElementAt : public nsCOMPtr_helper |
| { |
| public: |
| nsQueryArrayElementAt(nsIArray* aArray, PRUint32 aIndex, |
| nsresult* aErrorPtr) |
| : mArray(aArray), |
| mIndex(aIndex), |
| mErrorPtr(aErrorPtr) |
| { |
| // nothing else to do here |
| } |
| |
| virtual nsresult NS_FASTCALL operator()(const nsIID& aIID, void**) const; |
| |
| private: |
| nsIArray* mArray; |
| PRUint32 mIndex; |
| nsresult* mErrorPtr; |
| }; |
| |
| inline |
| const nsQueryArrayElementAt |
| do_QueryElementAt(nsIArray* aArray, PRUint32 aIndex, nsresult* aErrorPtr = 0) |
| { |
| return nsQueryArrayElementAt(aArray, aIndex, aErrorPtr); |
| } |
| |
| #endif // nsArrayUtils_h__ |