mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-23 02:05:42 +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
89 lines
3.1 KiB
C++
89 lines
3.1 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 nsMeterFrame_h___
|
|
#define nsMeterFrame_h___
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "nsContainerFrame.h"
|
|
#include "nsIAnonymousContentCreator.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsCSSPseudoElements.h"
|
|
|
|
class nsMeterFrame final : public nsContainerFrame,
|
|
public nsIAnonymousContentCreator
|
|
|
|
{
|
|
typedef mozilla::dom::Element Element;
|
|
|
|
public:
|
|
NS_DECL_QUERYFRAME
|
|
NS_DECL_FRAMEARENA_HELPERS(nsMeterFrame)
|
|
|
|
explicit nsMeterFrame(ComputedStyle* aStyle);
|
|
virtual ~nsMeterFrame();
|
|
|
|
virtual void DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData) override;
|
|
|
|
virtual void Reflow(nsPresContext* aCX,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus) override;
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
virtual nsresult GetFrameName(nsAString& aResult) const override {
|
|
return MakeFrameName(NS_LITERAL_STRING("Meter"), aResult);
|
|
}
|
|
#endif
|
|
|
|
// nsIAnonymousContentCreator
|
|
virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
|
|
virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
|
|
uint32_t aFilter) override;
|
|
|
|
virtual nsresult AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute,
|
|
int32_t aModType) override;
|
|
|
|
virtual mozilla::LogicalSize
|
|
ComputeAutoSize(gfxContext* aRenderingContext,
|
|
mozilla::WritingMode aWM,
|
|
const mozilla::LogicalSize& aCBSize,
|
|
nscoord aAvailableISize,
|
|
const mozilla::LogicalSize& aMargin,
|
|
const mozilla::LogicalSize& aBorder,
|
|
const mozilla::LogicalSize& aPadding,
|
|
ComputeSizeFlags aFlags) override;
|
|
|
|
virtual nscoord GetMinISize(gfxContext *aRenderingContext) override;
|
|
virtual nscoord GetPrefISize(gfxContext *aRenderingContext) override;
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const override
|
|
{
|
|
return nsContainerFrame::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
|
|
}
|
|
|
|
/**
|
|
* Returns whether the frame and its child should use the native style.
|
|
*/
|
|
bool ShouldUseNativeStyle() const;
|
|
|
|
protected:
|
|
// Helper function which reflow the anonymous div frame.
|
|
void ReflowBarFrame(nsIFrame* aBarFrame,
|
|
nsPresContext* aPresContext,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus);
|
|
/**
|
|
* The div used to show the meter bar.
|
|
* @see nsMeterFrame::CreateAnonymousContent
|
|
*/
|
|
nsCOMPtr<Element> mBarDiv;
|
|
};
|
|
|
|
#endif
|