/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/. */

/* base class for rendering objects that need child lists but behave like leaf */

#ifndef nsAtomicContainerFrame_h___

#define nsAtomicContainerFrame_h___

#include "nsContainerFrame.h"

/**

 * This class is for frames which need child lists but act like a leaf

 * frame. In general, all frames of elements laid out according to the

 * CSS box model would need child list for ::backdrop in case they are

 * in fullscreen, while some of them still want leaf frame behavior.

 */

class nsAtomicContainerFrame : public nsContainerFrame

{

public:

  NS_DECL_ABSTRACT_FRAME(nsAtomicContainerFrame)

  // Bypass the nsContainerFrame/nsSplittableFrame impl of the following

  // methods so we behave like a leaf frame.

  FrameSearchResult PeekOffsetNoAmount(bool aForward, int32_t* aOffset) override

  {

    return nsFrame::PeekOffsetNoAmount(aForward, aOffset);

  }

  FrameSearchResult

  PeekOffsetCharacter(bool aForward, int32_t* aOffset,

                      PeekOffsetCharacterOptions aOptions =

                        PeekOffsetCharacterOptions()) override

  {

    return nsFrame::PeekOffsetCharacter(aForward, aOffset, aOptions);

  }

  nsSplittableType GetSplittableType() const override

  {

    return nsFrame::GetSplittableType();

  }

protected:

  nsAtomicContainerFrame(ComputedStyle* aStyle, ClassID aID)

    : nsContainerFrame(aStyle, aID)

  {}

};

#endif // nsAtomicContainerFrame_h___