gecko-dev/layout/generic/nsAtomicContainerFrame.h
Ting-Yu Lin 1d9848a22a Bug 916972 - Eliminate nsIFrame::GetSplittableType() completely. r=mats,dholbert
Currently, GetSplittableType() is called only in
nsCSSFrameConstructor::CreateContinuingFrame(). The splittable concrete frames
should inherit from nsSplittableFrame, and must explicitly create continuing
frame in CreateContinuingFrame(). Thus, no need to maintain GetSplittableType().

Differential Revision: https://phabricator.services.mozilla.com/D10798

--HG--
extra : moz-landing-system : lando
2018-11-05 19:11:12 +00:00

46 lines
1.6 KiB
C++

/* -*- 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);
}
protected:
nsAtomicContainerFrame(ComputedStyle* aStyle, ClassID aID)
: nsContainerFrame(aStyle, aID)
{}
};
#endif // nsAtomicContainerFrame_h___