mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-23 10:15:41 +00:00
b099eab802
All classes deriving from nsIFrame that did not have any subclasses themselves (at the time of writing this patch) have been marked with `final`. Some other Layout classes have also been made final, but this was opportunistic while working on nsIFrame subclasses, and is definitely not exhaustive, further patches welcome; refer to bug 1332680. Advantages of marking a class final include: - Allowing the compiler to devirtualize some method calls (i.e., calling virtual functions directly instead of going through the vtable), - Indicating that the class is not currently subclassed, - Preventing subclassing without being aware that this would remove the finalization benefits of the parent class. `final` does not signify that these classes should *never* be subclassed, this is left for developers to decide. Differential Revision: https://phabricator.services.mozilla.com/D5020 --HG-- extra : moz-landing-system : lando
34 lines
1.0 KiB
C++
34 lines
1.0 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/. */
|
|
|
|
#ifndef nsMathMLsemanticsFrame_h___
|
|
#define nsMathMLsemanticsFrame_h___
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "nsMathMLSelectedFrame.h"
|
|
|
|
//
|
|
// <semantics> -- associate annotations with a MathML expression
|
|
//
|
|
|
|
class nsMathMLsemanticsFrame final : public nsMathMLSelectedFrame
|
|
{
|
|
public:
|
|
NS_DECL_FRAMEARENA_HELPERS(nsMathMLsemanticsFrame)
|
|
|
|
friend nsIFrame* NS_NewMathMLsemanticsFrame(nsIPresShell* aPresShell,
|
|
ComputedStyle* aStyle);
|
|
|
|
protected:
|
|
explicit nsMathMLsemanticsFrame(ComputedStyle* aStyle) :
|
|
nsMathMLSelectedFrame(aStyle, kClassID) {}
|
|
virtual ~nsMathMLsemanticsFrame();
|
|
|
|
nsIFrame* GetSelectedFrame() override;
|
|
};
|
|
|
|
#endif /* nsMathMLsemanticsFrame_h___ */
|