gecko-dev/layout/generic/nsSplittableFrame.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 nsSplittableFrame_h___
#define nsSplittableFrame_h___
#include "nsFrame.h"
// Derived class that allows splitting
class nsSplittableFrame : public nsFrame
{
public:
NS_IMETHOD Init(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow);
NS_IMETHOD IsSplittable(nsSplittableType& aIsSplittable) const;
#ifdef DEBUG
NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
#endif
// 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;
// Remove the frame from the flow. Connects the frame's prev-in-flow
// and its next-in-flow
static void RemoveFromFlow(nsIFrame* aFrame);
// Detach from previous frame in flow
static void BreakFromPrevFlow(nsIFrame* aFrame);
nsIFrame* GetPrevInFlow();
nsIFrame* GetNextInFlow();
protected:
#ifdef DEBUG
virtual void DumpBaseRegressionData(nsIPresContext* aPresContext, FILE* out, PRInt32 aIndent);
#endif
nsIFrame* mPrevInFlow;
nsIFrame* mNextInFlow;
};
#endif /* nsSplittableFrame_h___ */