gecko-dev/layout/mathml/nsMathMLTokenFrame.h

/* -*- 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 nsMathMLTokenFrame_h___
#define nsMathMLTokenFrame_h___

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

namespace mozilla {
class PresShell;
}  // namespace mozilla

//
// Base class to handle token elements
//

class nsMathMLTokenFrame : public nsMathMLContainerFrame {
 public:
  NS_DECL_FRAMEARENA_HELPERS(nsMathMLTokenFrame)

  friend nsIFrame* NS_NewMathMLTokenFrame(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;
    if (mContent->IsMathMLElement(nsGkAtoms::mtext_)) {
      mPresentationData.flags |= NS_MATHML_SPACE_LIKE;
    }
    return NS_OK;
  }

  NS_IMETHOD
  InheritAutomaticData(nsIFrame* aParent) override;

  virtual eMathMLFrameType GetMathMLFrameType() override;

  virtual void SetInitialChildList(ChildListID aListID,
                                   nsFrameList& aChildList) override;

  virtual void AppendFrames(ChildListID aListID,
                            nsFrameList& aChildList) override;

  virtual void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
                            const nsLineList::iterator* aPrevFrameLine,
                            nsFrameList& aChildList) override;

  virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
                      const ReflowInput& aReflowInput,
                      nsReflowStatus& aStatus) override;

  virtual nsresult Place(DrawTarget* aDrawTarget, bool aPlaceOrigin,
                         ReflowOutput& aDesiredSize) override;

 protected:
  explicit nsMathMLTokenFrame(ComputedStyle* aStyle,
                              nsPresContext* aPresContext,
                              ClassID aID = kClassID)
      : nsMathMLContainerFrame(aStyle, aPresContext, aID) {}
  virtual ~nsMathMLTokenFrame();

  void MarkTextFramesAsTokenMathML();
};

#endif /* nsMathMLTokentFrame_h___ */