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comparison: layout/generic/nsIScrollPositionListener.h
layout/generic/nsIScrollPositionListener.h
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| 1 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef nsIScrollPositionListener_h___ | |
| 8 #define nsIScrollPositionListener_h___ | |
| 9 | |
| 10 #include "nsCoord.h" | |
| 11 | |
| 12 /** | |
| 13 * Provides a way to learn about scroll position changes of nsIScrollableFrame's. | |
| 14 */ | |
| 15 class nsIScrollPositionListener { | |
| 16 public: | |
| 17 | |
| 18 virtual void ScrollPositionWillChange(nscoord aX, nscoord aY) = 0; | |
| 19 virtual void ScrollPositionDidChange(nscoord aX, nscoord aY) = 0; | |
| 20 }; | |
| 21 | |
| 22 #endif /* nsIScrollPositionListener_h___ */ | |
| 23 |
