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
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsIScrollbarMediator_h___
michael@0: #define nsIScrollbarMediator_h___
michael@0: 
michael@0: #include "nsQueryFrame.h"
michael@0: 
michael@0: class nsScrollbarFrame;
michael@0: 
michael@0: class nsIScrollbarMediator
michael@0: {
michael@0: public:
michael@0:   NS_DECL_QUERYFRAME_TARGET(nsIScrollbarMediator)
michael@0: 
michael@0:   // The aScrollbar argument denotes the scrollbar that's firing the notification.
michael@0:   NS_IMETHOD PositionChanged(nsScrollbarFrame* aScrollbar, int32_t aOldIndex, int32_t& aNewIndex) = 0;
michael@0:   NS_IMETHOD ScrollbarButtonPressed(nsScrollbarFrame* aScrollbar, int32_t aOldIndex, int32_t aNewIndex) = 0;
michael@0: 
michael@0:   NS_IMETHOD VisibilityChanged(bool aVisible) = 0;
michael@0: };
michael@0: 
michael@0: #endif
michael@0: