/* -*- 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 nsMathMLmspaceFrame_h___
#define nsMathMLmspaceFrame_h___

#include "mozilla/Attributes.h"
#include "nsCSSValue.h"
#include "nsMathMLContainerFrame.h"

namespace mozilla {
class PresShell;
}  // namespace mozilla

//
// <mspace> -- space
//

class nsMathMLmspaceFrame final : public nsMathMLContainerFrame {
 public:
  NS_DECL_FRAMEARENA_HELPERS(nsMathMLmspaceFrame)

  friend nsIFrame* NS_NewMathMLmspaceFrame(mozilla::PresShell* aPresShell,
                                           ComputedStyle* aStyle);

  NS_IMETHOD
  TransmitAutomaticData() override {
    // The REC defines the following elements to be space-like:
    // * an mtext, mspace, maligngroup, or malignmark element;
    mPresentationData.flags |= NS_MATHML_SPACE_LIKE;
    return NS_OK;
  }

 protected:
  explicit nsMathMLmspaceFrame(ComputedStyle* aStyle,
                               nsPresContext* aPresContext)
      : nsMathMLContainerFrame(aStyle, aPresContext, kClassID) {}
  virtual ~nsMathMLmspaceFrame();

 private:
  struct Attribute {
    nsCSSValue mValue;
    enum class ParsingState : uint8_t {
      Valid,
      Invalid,
      Dirty,
    };
    ParsingState mState = ParsingState::Dirty;
  };
  Attribute mWidth;
  Attribute mHeight;
  Attribute mDepth;

  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
                            int32_t aModType) final;
  nscoord CalculateAttributeValue(nsAtom* aAtom, Attribute& aAttribute,
                                  uint32_t aFlags, float aFontSizeInflation);
  nsresult Place(DrawTarget* aDrawTarget, const PlaceFlags& aFlags,
                 ReflowOutput& aDesiredSize) final;
};

#endif /* nsMathMLmspaceFrame_h___ */