/* -*- 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 nsFirstLetterFrame_h__

#define nsFirstLetterFrame_h__

/* rendering object for CSS :first-letter pseudo-element */

#include "mozilla/Attributes.h"

#include "nsContainerFrame.h"

class nsFirstLetterFrame final : public nsContainerFrame {

public:

  NS_DECL_QUERYFRAME

  NS_DECL_FRAMEARENA_HELPERS(nsFirstLetterFrame)

  explicit nsFirstLetterFrame(ComputedStyle* aStyle)

    : nsContainerFrame(aStyle, kClassID)

  {}

  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,

                                const nsDisplayListSet& aLists) override;

  virtual void Init(nsIContent*       aContent,

                    nsContainerFrame* aParent,

                    nsIFrame*         aPrevInFlow) override;

  virtual void SetInitialChildList(ChildListID     aListID,

                                   nsFrameList&    aChildList) override;

#ifdef DEBUG_FRAME_DUMP

  virtual nsresult GetFrameName(nsAString& aResult) const override;

#endif

  bool IsFloating() const { return GetStateBits() & NS_FRAME_OUT_OF_FLOW; }

  virtual bool IsFrameOfType(uint32_t aFlags) const override

  {

    if (!IsFloating())

      aFlags = aFlags & ~(nsIFrame::eLineParticipant);

    return nsContainerFrame::IsFrameOfType(aFlags &

      ~(nsIFrame::eBidiInlineContainer));

  }

  virtual nscoord GetMinISize(gfxContext *aRenderingContext) override;

  virtual nscoord GetPrefISize(gfxContext *aRenderingContext) override;

  virtual void AddInlineMinISize(gfxContext *aRenderingContext,

                                 InlineMinISizeData *aData) override;

  virtual void AddInlinePrefISize(gfxContext *aRenderingContext,

                                  InlinePrefISizeData *aData) override;

  virtual mozilla::LogicalSize

  ComputeSize(gfxContext *aRenderingContext,

              mozilla::WritingMode aWritingMode,

              const mozilla::LogicalSize& aCBSize,

              nscoord aAvailableISize,

              const mozilla::LogicalSize& aMargin,

              const mozilla::LogicalSize& aBorder,

              const mozilla::LogicalSize& aPadding,

              ComputeSizeFlags aFlags) override;

  virtual void Reflow(nsPresContext*           aPresContext,

                      ReflowOutput&     aDesiredSize,

                      const ReflowInput& aReflowInput,

                      nsReflowStatus&          aStatus) override;

  virtual bool CanContinueTextRun() const override;

  virtual nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode) const override;

  virtual LogicalSides GetLogicalSkipSides(const ReflowInput* aReflowInput = nullptr) const override;

//override of nsFrame method

  virtual nsresult GetChildFrameContainingOffset(int32_t inContentOffset,

                                                 bool inHint,

                                                 int32_t* outFrameContentOffset,

                                                 nsIFrame** outChildFrame) override;

  nscoord GetFirstLetterBaseline() const { return mBaseline; }

  // For floating first letter frames, create a continuation for aChild and

  // place it in the correct place. aContinuation is an outparam for the

  // continuation that is created. aIsFluid determines if the continuation is

  // fluid or not.

  nsresult CreateContinuationForFloatingParent(nsPresContext* aPresContext,

                                               nsIFrame* aChild,

                                               nsIFrame** aContinuation,

                                               bool aIsFluid);

protected:

  nscoord mBaseline;

  void DrainOverflowFrames(nsPresContext* aPresContext);

};

#endif /* nsFirstLetterFrame_h__ */