gecko-dev/layout/mathml/nsMathMLTokenFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2012-05-21 11:12:37 +00:00
/* 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 "nsCOMPtr.h"
#include "nsMathMLContainerFrame.h"
//
// Base class to handle token elements
//
class nsMathMLTokenFrame : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS
friend nsIFrame* NS_NewMathMLTokenFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
NS_IMETHOD
TransmitAutomaticData() {
// The REC defines the following elements to be space-like:
// * an mtext, mspace, maligngroup, or malignmark element;
if (mContent->Tag() == nsGkAtoms::mtext_) {
mPresentationData.flags |= NS_MATHML_SPACE_LIKE;
}
return NS_OK;
}
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent);
virtual eMathMLFrameType GetMathMLFrameType();
NS_IMETHOD
SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList) MOZ_OVERRIDE;
NS_IMETHOD
AppendFrames(ChildListID aListID,
nsFrameList& aChildList) MOZ_OVERRIDE;
NS_IMETHOD
InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aChildList) MOZ_OVERRIDE;
NS_IMETHOD
Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus) MOZ_OVERRIDE;
virtual nsresult
Place(nsRenderingContext& aRenderingContext,
bool aPlaceOrigin,
nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;
virtual void MarkIntrinsicWidthsDirty();
virtual nsresult
ChildListChanged(int32_t aModType) MOZ_OVERRIDE
{
ProcessTextData();
return nsMathMLContainerFrame::ChildListChanged(aModType);
}
protected:
nsMathMLTokenFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
virtual ~nsMathMLTokenFrame();
// hook to perform MathML-specific actions depending on the tag
virtual void ProcessTextData();
// helper to set the style of <mi> which has to be italic or normal
// depending on its textual content
bool SetTextStyle();
void ForceTrimChildTextFrames();
};
#endif /* nsMathMLTokentFrame_h___ */