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Diffstat (limited to 'layout/generic/nsIScrollPositionListener.h')
| -rw-r--r-- | layout/generic/nsIScrollPositionListener.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/layout/generic/nsIScrollPositionListener.h b/layout/generic/nsIScrollPositionListener.h new file mode 100644 index 000000000..1fda15776 --- /dev/null +++ b/layout/generic/nsIScrollPositionListener.h @@ -0,0 +1,23 @@ +/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef nsIScrollPositionListener_h___ +#define nsIScrollPositionListener_h___ + +#include "nsCoord.h" + +/** + * Provides a way to learn about scroll position changes of nsIScrollableFrame's. + */ +class nsIScrollPositionListener { +public: + + virtual void ScrollPositionWillChange(nscoord aX, nscoord aY) = 0; + virtual void ScrollPositionDidChange(nscoord aX, nscoord aY) = 0; +}; + +#endif /* nsIScrollPositionListener_h___ */ + |