/* -*- 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