pjs/layout/generic/nsIScrollableFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsIScrollFrame_h___
#define nsIScrollFrame_h___
#include "nsISupports.h"
#include "nsCoord.h"
class nsIFrame;
class nsIPresContext;
// IID for the nsIScrollableFrame interface
#define NS_ISCROLLABLE_FRAME_IID \
{ 0xc95f1831, 0xc372, 0x11d1, \
{ 0xb7, 0x21, 0x0, 0x64, 0x9, 0x92, 0xd8, 0xc9 } }
class nsIScrollableFrame : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISCROLLABLE_FRAME_IID)
/**
* Set the view that we are scrolling within the scrolling view.
*/
NS_IMETHOD SetScrolledFrame(nsIPresContext* aPresContext,
nsIFrame *aScrolledFrame) = 0;
/**
* Get the view that we are scrolling within the scrollable frame.
* @result child view
*/
NS_IMETHOD GetScrolledFrame(nsIPresContext* aPresContext,
nsIFrame *&aScrolledFrame) const = 0;
/**
* Gets the size of the area that lies inside the scrollbars but clips the scrolled frame
*/
NS_IMETHOD GetClipSize(nsIPresContext* aPresContext,
nscoord *aWidth,
nscoord *aHeight) const = 0;
/**
* Get information about whether the vertical and horizontal scrollbars
* are currently visible
*/
NS_IMETHOD GetScrollbarVisibility(nsIPresContext* aPresContext,
PRBool *aVerticalVisible,
PRBool *aHorizontalVisible) const = 0;
};
#endif