| /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| * |
| * ***** 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 Communicator. |
| * |
| * The Initial Developer of the Original Code is |
| * Netscape Communications Corp. |
| * Portions created by the Initial Developer are Copyright (C) 1999 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Patrick Beard |
| * |
| * 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 ***** */ |
| |
| #ifndef nsIScrollPositionListener_h___ |
| #define nsIScrollPositionListener_h___ |
| |
| #include "nsISupports.h" |
| #include "nsCoord.h" |
| |
| // forward declarations |
| class nsIScrollableView; |
| |
| // IID for the nsIScrollPositionListener interface |
| // {f8dfc500-6ad1-11d3-8360-a3f373ff79fc} |
| #define NS_ISCROLLPOSITIONLISTENER_IID \ |
| { 0xf8dfc500, 0x6ad1, 0x11d3, { 0x83, 0x60, 0xa3, 0xf3, 0x73, 0xff, 0x79, 0xfc } } |
| |
| /** |
| * Provides a way for a client of an nsIScrollableView to learn about scroll position |
| * changes. |
| */ |
| class nsIScrollPositionListener : public nsISupports { |
| public: |
| NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCROLLPOSITIONLISTENER_IID) |
| |
| NS_IMETHOD ScrollPositionWillChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY) = 0; |
| NS_IMETHOD ScrollPositionDidChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY) = 0; |
| }; |
| |
| NS_DEFINE_STATIC_IID_ACCESSOR(nsIScrollPositionListener, |
| NS_ISCROLLPOSITIONLISTENER_IID) |
| |
| #endif /* nsIScrollPositionListener_h___ */ |
| |