michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsIScrollObserver_h___
michael@0: #define nsIScrollObserver_h___
michael@0: 
michael@0: #include "nsISupports.h"
michael@0: 
michael@0: #define NS_ISCROLLOBSERVER_IID \
michael@0:   { 0x7c1a8b63, 0xe322, 0x4827, \
michael@0:     { 0xa4, 0xb1, 0x3b, 0x6e, 0x59, 0x03, 0x47, 0x7e } }
michael@0: 
michael@0: class nsIScrollObserver : public nsISupports
michael@0: {
michael@0: public:
michael@0:   NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCROLLOBSERVER_IID)
michael@0: 
michael@0:   /**
michael@0:    * Called when the scroll position of some element has changed.
michael@0:    */
michael@0:   virtual void ScrollPositionChanged() = 0;
michael@0: };
michael@0: 
michael@0: NS_DEFINE_STATIC_IID_ACCESSOR(nsIScrollObserver, NS_ISCROLLOBSERVER_IID)
michael@0: 
michael@0: #endif /* nsIScrollObserver_h___ */