The Tor Browser: layout/mathml/nsMathMLmphantomFrame.h@7e26c7da4463

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

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nsMathMLmphantomFrame_h___

     7 #define nsMathMLmphantomFrame_h___

     9 #include "mozilla/Attributes.h"

    10 #include "nsMathMLContainerFrame.h"

    12 //

    13 // <mphantom> -- make content invisible but preserve its size

    14 //

    16 class nsMathMLmphantomFrame : public nsMathMLContainerFrame {

    17 public:

    18   NS_DECL_FRAMEARENA_HELPERS

    20   friend nsIFrame* NS_NewMathMLmphantomFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

    22   NS_IMETHOD

    23   InheritAutomaticData(nsIFrame* aParent) MOZ_OVERRIDE;

    25   NS_IMETHOD

    26   TransmitAutomaticData() MOZ_OVERRIDE {

    27     return TransmitAutomaticDataForMrowLikeElement();

    28   }

    30   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,

    31                                 const nsRect&           aDirtyRect,

    32                                 const nsDisplayListSet& aLists) MOZ_OVERRIDE {}

    34   bool

    35   IsMrowLike() MOZ_OVERRIDE {

    36     return mFrames.FirstChild() != mFrames.LastChild() ||

    37            !mFrames.FirstChild();

    38   }

    40 protected:

    41   nsMathMLmphantomFrame(nsStyleContext* aContext)

    42     : nsMathMLContainerFrame(aContext) {}

    43   virtual ~nsMathMLmphantomFrame();

    44 };

    46 #endif /* nsMathMLmphantomFrame_h___ */

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