author Steve Fink <>
Thu, 05 Feb 2015 10:43:51 -0800
changeset 227957 ad796c7bd98a82e7c70a9fe61acbfe1078e67f70
parent 202858 9d4e083655b993f73ba3eca84e0f14cdd270bcda
child 234933 ac4464790ec4896a5188fa50cfc69ae0ffeddc08
permissions -rw-r--r--
Bug 1129314 - On OOM, abort the stats collection entirely, r=terrence

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

#ifndef nsMeterFrame_h___
#define nsMeterFrame_h___

#include "mozilla/Attributes.h"
#include "nsContainerFrame.h"
#include "nsIAnonymousContentCreator.h"
#include "nsCOMPtr.h"

class nsMeterFrame : public nsContainerFrame,
                     public nsIAnonymousContentCreator

  typedef mozilla::dom::Element Element;


  explicit nsMeterFrame(nsStyleContext* aContext);
  virtual ~nsMeterFrame();

  virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;

  virtual void Reflow(nsPresContext*           aCX,
                      nsHTMLReflowMetrics&     aDesiredSize,
                      const nsHTMLReflowState& aReflowState,
                      nsReflowStatus&          aStatus) MOZ_OVERRIDE;

  virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE {
    return MakeFrameName(NS_LITERAL_STRING("Meter"), aResult);

  virtual bool IsLeaf() const MOZ_OVERRIDE { return true; }

  // nsIAnonymousContentCreator
  virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) MOZ_OVERRIDE;
  virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
                                        uint32_t aFilter) MOZ_OVERRIDE;

  virtual nsresult AttributeChanged(int32_t  aNameSpaceID,
                                    nsIAtom* aAttribute,
                                    int32_t  aModType) MOZ_OVERRIDE;

  virtual mozilla::LogicalSize
  ComputeAutoSize(nsRenderingContext *aRenderingContext,
                  mozilla::WritingMode aWritingMode,
                  const mozilla::LogicalSize& aCBSize,
                  nscoord aAvailableISize,
                  const mozilla::LogicalSize& aMargin,
                  const mozilla::LogicalSize& aBorder,
                  const mozilla::LogicalSize& aPadding,
                  bool aShrinkWrap) MOZ_OVERRIDE;

  virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
  virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;

  virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
    return nsContainerFrame::IsFrameOfType(aFlags &
      ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));

   * Returns whether the frame and its child should use the native style.
  bool ShouldUseNativeStyle() const;

  virtual Element* GetPseudoElement(nsCSSPseudoElements::Type aType) MOZ_OVERRIDE;

  // Helper function which reflow the anonymous div frame.
  void ReflowBarFrame(nsIFrame*                aBarFrame,
                      nsPresContext*           aPresContext,
                      const nsHTMLReflowState& aReflowState,
                      nsReflowStatus&          aStatus);
   * The div used to show the meter bar.
   * @see nsMeterFrame::CreateAnonymousContent
  nsCOMPtr<Element> mBarDiv;