gecko-dev/layout/generic/nsSplittableFrame.h
1998-09-30 21:01:11 +00:00

72 lines
2.2 KiB
C++

/* -*- 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 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsSplittableFrame_h___
#define nsSplittableFrame_h___
#include "nsFrame.h"
// Derived class that allows splitting
class nsSplittableFrame : public nsFrame
{
public:
NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler) const;
// CreateContinuingFrame() does the default behavior of using the
// content delegate to create a new frame
NS_IMETHOD IsSplittable(nsSplittableType& aIsSplittable) const;
// Flow member functions.
NS_IMETHOD GetPrevInFlow(nsIFrame*& aPrevInFlow) const;
NS_IMETHOD SetPrevInFlow(nsIFrame*);
NS_IMETHOD GetNextInFlow(nsIFrame*& aNextInFlow) const;
NS_IMETHOD SetNextInFlow(nsIFrame*);
/**
* Return the first frame in our current flow.
*/
nsIFrame* GetFirstInFlow() const;
/**
* Return the last frame in our current flow.
*/
nsIFrame* GetLastInFlow() const;
NS_IMETHOD AppendToFlow(nsIFrame* aAfterFrame);
NS_IMETHOD PrependToFlow(nsIFrame* aAfterFrame);
NS_IMETHOD RemoveFromFlow();
NS_IMETHOD BreakFromPrevFlow();
NS_IMETHOD BreakFromNextFlow();
nsIFrame* GetPrevInFlow();
nsIFrame* GetNextInFlow();
protected:
// Constructor. Takes as arguments the content object, the index in parent,
// and the Frame for the content parent
nsSplittableFrame(nsIContent* aContent, nsIFrame* aParent);
virtual ~nsSplittableFrame();
void SizeOfWithoutThis(nsISizeOfHandler* aHandler) const;
nsIFrame* mPrevInFlow;
nsIFrame* mNextInFlow;
};
#endif /* nsSplittableFrame_h___ */