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       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : /* base class for rendering objects that need child lists but behave like leaf */
       8             : 
       9             : #ifndef nsAtomicContainerFrame_h___
      10             : #define nsAtomicContainerFrame_h___
      11             : 
      12             : #include "nsContainerFrame.h"
      13             : 
      14             : /**
      15             :  * This class is for frames which need child lists but act like a leaf
      16             :  * frame. In general, all frames of elements laid out according to the
      17             :  * CSS box model would need child list for ::backdrop in case they are
      18             :  * in fullscreen, while some of them still want leaf frame behavior.
      19             :  */
      20           2 : class nsAtomicContainerFrame : public nsContainerFrame
      21             : {
      22             : public:
      23             :   NS_DECL_ABSTRACT_FRAME(nsAtomicContainerFrame)
      24             : 
      25             :   // Bypass the nsContainerFrame/nsSplittableFrame impl of the following
      26             :   // methods so we behave like a leaf frame.
      27           0 :   FrameSearchResult PeekOffsetNoAmount(bool aForward, int32_t* aOffset) override
      28             :   {
      29           0 :     return nsFrame::PeekOffsetNoAmount(aForward, aOffset);
      30             :   }
      31             :   FrameSearchResult
      32           0 :   PeekOffsetCharacter(bool aForward, int32_t* aOffset,
      33             :                       PeekOffsetCharacterOptions aOptions =
      34             :                         PeekOffsetCharacterOptions()) override
      35             :   {
      36           0 :     return nsFrame::PeekOffsetCharacter(aForward, aOffset, aOptions);
      37             :   }
      38           0 :   nsSplittableType GetSplittableType() const override
      39             :   {
      40           0 :     return nsFrame::GetSplittableType();
      41             :   }
      42             : 
      43             : protected:
      44           3 :   nsAtomicContainerFrame(nsStyleContext* aContext, ClassID aID)
      45           3 :     : nsContainerFrame(aContext, aID)
      46           3 :   {}
      47             : };
      48             : 
      49             : #endif // nsAtomicContainerFrame_h___