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36 lines
1023 B
C++
36 lines
1023 B
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsIScrollbarOwner_h___
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#define nsIScrollbarOwner_h___
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#include "nsQueryFrame.h"
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class nsIDOMEventTarget;
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class nsIFrame;
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/**
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* An interface that represents a frame which manages scrollbars.
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*/
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class nsIScrollbarOwner : public nsQueryFrame {
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public:
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NS_DECL_QUERYFRAME_TARGET(nsIScrollbarOwner)
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/**
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* Obtain the frame for the horizontal or vertical scrollbar, or null
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* if there is no such box.
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*/
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virtual nsIFrame* GetScrollbarBox(bool aVertical) = 0;
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/**
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* Show or hide scrollbars on 2 fingers touch.
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* Subclasses should call their ScrollbarActivity's corresponding methods.
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*/
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virtual void ScrollbarActivityStarted() const = 0;
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virtual void ScrollbarActivityStopped() const = 0;
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};
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#endif
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