path: root/layout/tables/nsTableRowFrame.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#include "nsTableRowFrame.h"

#include "mozilla/Baseline.h"
#include "mozilla/Maybe.h"
#include "mozilla/PresShell.h"
#include "nsTableRowGroupFrame.h"
#include "nsPresContext.h"
#include "mozilla/ComputedStyle.h"
#include "mozilla/StaticPrefs_layout.h"
#include "nsStyleConsts.h"
#include "nsIContent.h"
#include "nsIFrame.h"
#include "nsIFrameInlines.h"
#include "nsTableFrame.h"
#include "nsTableCellFrame.h"
#include "nsCSSRendering.h"
#include "nsHTMLParts.h"
#include "nsTableColGroupFrame.h"
#include "nsTableColFrame.h"
#include "nsDisplayList.h"
#include <algorithm>

#ifdef ACCESSIBILITY
#  include "nsAccessibilityService.h"
#endif

using namespace mozilla;

namespace mozilla {

struct TableCellReflowInput : public ReflowInput {
  TableCellReflowInput(nsPresContext* aPresContext,
                       const ReflowInput& aParentReflowInput, nsIFrame* aFrame,
                       const LogicalSize& aAvailableSpace,
                       ReflowInput::InitFlags aFlags = {})
      : ReflowInput(aPresContext, aParentReflowInput, aFrame, aAvailableSpace,
                    Nothing(), aFlags) {}

  void FixUp(const LogicalSize& aAvailSpace);
};

}  // namespace mozilla

void TableCellReflowInput::FixUp(const LogicalSize& aAvailSpace) {
  // fix the mComputed values during a pass 2 reflow since the cell can be a
  // percentage base
  NS_WARNING_ASSERTION(
      NS_UNCONSTRAINEDSIZE != aAvailSpace.ISize(mWritingMode),
      "have unconstrained inline-size; this should only result from very large "
      "sizes, not attempts at intrinsic inline size calculation");
  if (NS_UNCONSTRAINEDSIZE != ComputedISize()) {
    nscoord computedISize =
        aAvailSpace.ISize(mWritingMode) -
        ComputedLogicalBorderPadding(mWritingMode).IStartEnd(mWritingMode);
    computedISize = std::max(0, computedISize);
    SetComputedISize(computedISize);
  }
  if (NS_UNCONSTRAINEDSIZE != ComputedBSize() &&
      NS_UNCONSTRAINEDSIZE != aAvailSpace.BSize(mWritingMode)) {
    nscoord computedBSize =
        aAvailSpace.BSize(mWritingMode) -
        ComputedLogicalBorderPadding(mWritingMode).BStartEnd(mWritingMode);
    computedBSize = std::max(0, computedBSize);
    SetComputedBSize(computedBSize);
  }
}

void nsTableRowFrame::InitChildReflowInput(nsPresContext& aPresContext,
                                           const LogicalSize& aAvailSize,
                                           bool aBorderCollapse,
                                           TableCellReflowInput& aReflowInput) {
  Maybe<LogicalMargin> collapseBorder;
  if (aBorderCollapse) {
    // we only reflow cells, so don't need to check frame type
    nsBCTableCellFrame* bcCellFrame = (nsBCTableCellFrame*)aReflowInput.mFrame;
    if (bcCellFrame) {
      collapseBorder.emplace(
          bcCellFrame->GetBorderWidth(aReflowInput.GetWritingMode()));
    }
  }
  aReflowInput.Init(&aPresContext, Nothing(), collapseBorder);
  aReflowInput.FixUp(aAvailSize);
}

void nsTableRowFrame::SetFixedBSize(nscoord aValue) {
  nscoord bsize = std::max(0, aValue);
  if (HasFixedBSize()) {
    if (bsize > mStyleFixedBSize) {
      mStyleFixedBSize = bsize;
    }
  } else {
    mStyleFixedBSize = bsize;
    if (bsize > 0) {
      SetHasFixedBSize(true);
    }
  }
}

void nsTableRowFrame::SetPctBSize(float aPctValue, bool aForce) {
  nscoord bsize = std::max(0, NSToCoordRound(aPctValue * 100.0f));
  if (HasPctBSize()) {
    if ((bsize > mStylePctBSize) || aForce) {
      mStylePctBSize = bsize;
    }
  } else {
    mStylePctBSize = bsize;
    if (bsize > 0) {
      SetHasPctBSize(true);
    }
  }
}

/* ----------- nsTableRowFrame ---------- */

NS_QUERYFRAME_HEAD(nsTableRowFrame)
  NS_QUERYFRAME_ENTRY(nsTableRowFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)

nsTableRowFrame::nsTableRowFrame(ComputedStyle* aStyle,
                                 nsPresContext* aPresContext, ClassID aID)
    : nsContainerFrame(aStyle, aPresContext, aID) {
  mBits.mRowIndex = 0;
  mBits.mHasFixedBSize = 0;
  mBits.mHasPctBSize = 0;
  mBits.mFirstInserted = 0;
  ResetBSize();
}

nsTableRowFrame::~nsTableRowFrame() = default;

void nsTableRowFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
                           nsIFrame* aPrevInFlow) {
  // Let the base class do its initialization
  nsContainerFrame::Init(aContent, aParent, aPrevInFlow);

  NS_ASSERTION(mozilla::StyleDisplay::TableRow == StyleDisplay()->mDisplay,
               "wrong display on table row frame");

  if (aPrevInFlow) {
    // Set the row index
    nsTableRowFrame* rowFrame = (nsTableRowFrame*)aPrevInFlow;

    SetRowIndex(rowFrame->GetRowIndex());
  } else {
    mWritingMode = GetTableFrame()->GetWritingMode();
  }
}

void nsTableRowFrame::Destroy(DestroyContext& aContext) {
  nsTableFrame::MaybeUnregisterPositionedTablePart(this);
  nsContainerFrame::Destroy(aContext);
}

/* virtual */
void nsTableRowFrame::DidSetComputedStyle(ComputedStyle* aOldComputedStyle) {
  nsContainerFrame::DidSetComputedStyle(aOldComputedStyle);
  nsTableFrame::PositionedTablePartMaybeChanged(this, aOldComputedStyle);

  if (!aOldComputedStyle) {
    return;  // avoid the following on init
  }

#ifdef ACCESSIBILITY
  if (nsAccessibilityService* accService = GetAccService()) {
    // If a table row's background color is now different from
    // the background color of its previous row, it is possible our
    // table now has alternating row colors. This changes whether or not
    // the table is classified as a layout table or data table.
    // We invalidate on every background color change to avoid
    // walking the tree in search of the nearest row.
    if (StyleBackground()->BackgroundColor(this) !=
        aOldComputedStyle->StyleBackground()->BackgroundColor(
            aOldComputedStyle)) {
      // We send a notification here to invalidate the a11y cache on the
      // table so the next fetch of IsProbablyLayoutTable() is accurate.
      accService->TableLayoutGuessMaybeChanged(PresShell(), mContent);
    }
  }
#endif

  nsTableFrame* tableFrame = GetTableFrame();
  if (tableFrame->IsBorderCollapse() &&
      tableFrame->BCRecalcNeeded(aOldComputedStyle, Style())) {
    TableArea damageArea(0, GetRowIndex(), tableFrame->GetColCount(), 1);
    tableFrame->AddBCDamageArea(damageArea);
  }
}

void nsTableRowFrame::AppendFrames(ChildListID aListID,
                                   nsFrameList&& aFrameList) {
  NS_ASSERTION(aListID == FrameChildListID::Principal, "unexpected child list");

  DrainSelfOverflowList();  // ensure the last frame is in mFrames
  const nsFrameList::Slice& newCells =
      mFrames.AppendFrames(nullptr, std::move(aFrameList));

  // Add the new cell frames to the table
  nsTableFrame* tableFrame = GetTableFrame();
  for (nsIFrame* childFrame : newCells) {
    NS_ASSERTION(childFrame->IsTableCellFrame(),
                 "Not a table cell frame/pseudo frame construction failure");
    tableFrame->AppendCell(static_cast<nsTableCellFrame&>(*childFrame),
                           GetRowIndex());
  }

  PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors,
                                NS_FRAME_HAS_DIRTY_CHILDREN);
  tableFrame->SetGeometryDirty();
}

void nsTableRowFrame::InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
                                   const nsLineList::iterator* aPrevFrameLine,
                                   nsFrameList&& aFrameList) {
  NS_ASSERTION(aListID == FrameChildListID::Principal, "unexpected child list");
  NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this,
               "inserting after sibling frame with different parent");
  if (mFrames.IsEmpty() || (aPrevFrame && !aPrevFrame->GetNextSibling())) {
    // This is actually an append (though our caller didn't figure that out),
    // and our append codepath is both simpler/faster _and_ less buggy.
    // https://bugzilla.mozilla.org/show_bug.cgi?id=1388898 tracks the bugginess
    AppendFrames(aListID, std::move(aFrameList));
    return;
  }

  DrainSelfOverflowList();  // ensure aPrevFrame is in mFrames
  // Insert Frames in the frame list
  const nsFrameList::Slice& newCells =
      mFrames.InsertFrames(nullptr, aPrevFrame, std::move(aFrameList));

  nsTableCellFrame* prevCellFrame =
      static_cast<nsTableCellFrame*>(nsTableFrame::GetFrameAtOrBefore(
          this, aPrevFrame, LayoutFrameType::TableCell));
  nsTArray<nsTableCellFrame*> cellChildren;
  for (nsIFrame* childFrame : newCells) {
    NS_ASSERTION(childFrame->IsTableCellFrame(),
                 "Not a table cell frame/pseudo frame construction failure");
    cellChildren.AppendElement(static_cast<nsTableCellFrame*>(childFrame));
  }
  // insert the cells into the cell map
  int32_t colIndex = -1;
  if (prevCellFrame) {
    colIndex = prevCellFrame->ColIndex();
  }
  nsTableFrame* tableFrame = GetTableFrame();
  tableFrame->InsertCells(cellChildren, GetRowIndex(), colIndex);

  PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors,
                                NS_FRAME_HAS_DIRTY_CHILDREN);
  tableFrame->SetGeometryDirty();
}

void nsTableRowFrame::RemoveFrame(DestroyContext& aContext, ChildListID aListID,
                                  nsIFrame* aOldFrame) {
  NS_ASSERTION(aListID == FrameChildListID::Principal, "unexpected child list");
  MOZ_ASSERT((nsTableCellFrame*)do_QueryFrame(aOldFrame));

  auto* cellFrame = static_cast<nsTableCellFrame*>(aOldFrame);
  // remove the cell from the cell map
  nsTableFrame* tableFrame = GetTableFrame();
  tableFrame->RemoveCell(cellFrame, GetRowIndex());

  // Remove the frame and destroy it
  mFrames.DestroyFrame(aContext, aOldFrame);

  PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors,
                                NS_FRAME_HAS_DIRTY_CHILDREN);

  tableFrame->SetGeometryDirty();
}

/* virtual */
nsMargin nsTableRowFrame::GetUsedMargin() const { return nsMargin(0, 0, 0, 0); }

/* virtual */
nsMargin nsTableRowFrame::GetUsedBorder() const { return nsMargin(0, 0, 0, 0); }

/* virtual */
nsMargin nsTableRowFrame::GetUsedPadding() const {
  return nsMargin(0, 0, 0, 0);
}

static nscoord GetBSizeOfRowsSpannedBelowFirst(
    nsTableCellFrame& aTableCellFrame, nsTableFrame& aTableFrame,
    const WritingMode aWM) {
  nscoord bsize = 0;
  int32_t rowSpan = aTableFrame.GetEffectiveRowSpan(aTableCellFrame);
  // add in bsize of rows spanned beyond the 1st one
  nsIFrame* nextRow = aTableCellFrame.GetParent()->GetNextSibling();
  for (int32_t rowX = 1; ((rowX < rowSpan) && nextRow);) {
    if (nextRow->IsTableRowFrame()) {
      bsize += nextRow->BSize(aWM);
      rowX++;
    }
    bsize += aTableFrame.GetRowSpacing(rowX);
    nextRow = nextRow->GetNextSibling();
  }
  return bsize;
}

/**
 * Post-reflow hook. This is where the table row does its post-processing
 */
void nsTableRowFrame::DidResize() {
  // Resize and re-align the cell frames based on our row bsize
  nsTableFrame* tableFrame = GetTableFrame();

  WritingMode wm = GetWritingMode();
  ReflowOutput desiredSize(wm);
  desiredSize.SetSize(wm, GetLogicalSize(wm));
  desiredSize.SetOverflowAreasToDesiredBounds();

  nsSize containerSize = mRect.Size();

  for (nsTableCellFrame* cellFrame = GetFirstCell(); cellFrame;
       cellFrame = cellFrame->GetNextCell()) {
    nscoord cellBSize = BSize(wm) + GetBSizeOfRowsSpannedBelowFirst(
                                        *cellFrame, *tableFrame, wm);

    // If the bsize for the cell has changed, we need to reset it;
    // and in vertical-rl mode, we need to update the cell's block position
    // to account for the containerSize, which may not have been known
    // earlier, so we always apply it here.
    LogicalSize cellSize = cellFrame->GetLogicalSize(wm);
    if (cellSize.BSize(wm) != cellBSize || wm.IsVerticalRL()) {
      nsRect cellOldRect = cellFrame->GetRect();
      nsRect cellInkOverflow = cellFrame->InkOverflowRect();

      if (wm.IsVerticalRL()) {
        // Get the old position of the cell, as we want to preserve its
        // inline coordinate.
        LogicalPoint oldPos = cellFrame->GetLogicalPosition(wm, containerSize);

        // The cell should normally be aligned with the row's block-start,
        // so set the B component of the position to zero:
        LogicalPoint newPos(wm, oldPos.I(wm), 0);

        // ...unless relative positioning is in effect, in which case the
        // cell may have been moved away from the row's block-start
        if (cellFrame->IsRelativelyOrStickyPositioned()) {
          // Find out where the cell would have been without relative
          // positioning.
          LogicalPoint oldNormalPos =
              cellFrame->GetLogicalNormalPosition(wm, containerSize);
          // The difference (if any) between oldPos and oldNormalPos reflects
          // relative positioning that was applied to the cell, and which we
          // need to incorporate when resetting the position.
          newPos.B(wm) = oldPos.B(wm) - oldNormalPos.B(wm);
        }

        if (oldPos != newPos) {
          cellFrame->SetPosition(wm, newPos, containerSize);
          nsTableFrame::RePositionViews(cellFrame);
        }
      }

      cellSize.BSize(wm) = cellBSize;
      cellFrame->SetSize(wm, cellSize);

      if (tableFrame->IsBorderCollapse()) {
        nsTableFrame::InvalidateTableFrame(cellFrame, cellOldRect,
                                           cellInkOverflow, false);
      }
    }

    // realign cell content based on the new bsize.  We might be able to
    // skip this if the bsize didn't change... maybe.  Hard to tell.
    cellFrame->BlockDirAlignChild(wm, mMaxCellAscent);

    // Always store the overflow, even if the height didn't change, since
    // we'll lose part of our overflow area otherwise.
    ConsiderChildOverflow(desiredSize.mOverflowAreas, cellFrame);

    // Note that if the cell's *content* needs to change in response
    // to this height, it will get a special bsize reflow.
  }
  FinishAndStoreOverflow(&desiredSize);
  if (HasView()) {
    nsContainerFrame::SyncFrameViewAfterReflow(PresContext(), this, GetView(),
                                               desiredSize.InkOverflow(),
                                               ReflowChildFlags::Default);
  }
  // Let our base class do the usual work
}

// returns max-ascent amongst all cells that have 'vertical-align: baseline'
// *including* cells with rowspans
nscoord nsTableRowFrame::GetMaxCellAscent() const { return mMaxCellAscent; }

Maybe<nscoord> nsTableRowFrame::GetRowBaseline(WritingMode aWM) {
  if (mMaxCellAscent) {
    return Some(mMaxCellAscent);
  }

  // If we get here, we don't have a baseline on any of the cells in this row.
  if (aWM.IsCentralBaseline()) {
    return Nothing{};
  }
  nscoord ascent = 0;
  for (nsIFrame* childFrame : mFrames) {
    MOZ_ASSERT(childFrame->IsTableCellFrame());
    nscoord s = Baseline::SynthesizeBOffsetFromContentBox(
        childFrame, aWM, BaselineSharingGroup::First);
    ascent = std::max(ascent, s);
  }
  return Some(ascent);
}

nscoord nsTableRowFrame::GetInitialBSize(nscoord aPctBasis) const {
  nscoord bsize = 0;
  if ((aPctBasis > 0) && HasPctBSize()) {
    bsize = NSToCoordRound(GetPctBSize() * (float)aPctBasis);
  }
  if (HasFixedBSize()) {
    bsize = std::max(bsize, GetFixedBSize());
  }
  return std::max(bsize, GetContentBSize());
}

void nsTableRowFrame::ResetBSize() {
  SetHasFixedBSize(false);
  SetHasPctBSize(false);
  SetFixedBSize(0);
  SetPctBSize(0);
  SetContentBSize(0);

  mMaxCellAscent = 0;
  mMaxCellDescent = 0;
}

void nsTableRowFrame::UpdateBSize(nscoord aBSize, nscoord aAscent,
                                  nscoord aDescent, nsTableFrame* aTableFrame,
                                  nsTableCellFrame* aCellFrame) {
  if (!aTableFrame || !aCellFrame) {
    NS_ASSERTION(false, "invalid call");
    return;
  }

  if (aBSize == NS_UNCONSTRAINEDSIZE) {
    return;
  }
  if (!aCellFrame->HasVerticalAlignBaseline()) {
    // only the cell's height matters
    if (GetInitialBSize() < aBSize) {
      int32_t rowSpan = aTableFrame->GetEffectiveRowSpan(*aCellFrame);
      if (rowSpan == 1) {
        SetContentBSize(aBSize);
      }
    }
  } else {  // the alignment on the baseline can change the bsize
    NS_ASSERTION(
        aAscent != NS_UNCONSTRAINEDSIZE && aDescent != NS_UNCONSTRAINEDSIZE,
        "invalid call");
    // see if this is a long ascender
    if (mMaxCellAscent < aAscent) {
      mMaxCellAscent = aAscent;
    }
    // see if this is a long descender and without rowspan
    if (mMaxCellDescent < aDescent) {
      int32_t rowSpan = aTableFrame->GetEffectiveRowSpan(*aCellFrame);
      if (rowSpan == 1) {
        mMaxCellDescent = aDescent;
      }
    }
    // keep the tallest bsize in sync
    if (GetInitialBSize() < mMaxCellAscent + mMaxCellDescent) {
      SetContentBSize(mMaxCellAscent + mMaxCellDescent);
    }
  }
}

nscoord nsTableRowFrame::CalcBSize(const ReflowInput& aReflowInput) {
  nsTableFrame* tableFrame = GetTableFrame();

  ResetBSize();
  const nscoord computedBSize = aReflowInput.ComputedBSize();
  if (computedBSize != NS_UNCONSTRAINEDSIZE && computedBSize > 0) {
    SetFixedBSize(computedBSize);
  }

  WritingMode wm = aReflowInput.GetWritingMode();
  const nsStylePosition* position = StylePosition();
  const auto& bsizeStyleCoord = position->BSize(wm);
  if (bsizeStyleCoord.ConvertsToLength()) {
    SetFixedBSize(bsizeStyleCoord.ToLength());
  } else if (bsizeStyleCoord.ConvertsToPercentage()) {
    SetPctBSize(bsizeStyleCoord.ToPercentage());
  }

  for (nsTableCellFrame* kidFrame = GetFirstCell(); kidFrame;
       kidFrame = kidFrame->GetNextCell()) {
    MOZ_ASSERT(kidFrame->GetWritingMode() == wm);
    LogicalSize desSize = kidFrame->GetDesiredSize();
    if (NS_UNCONSTRAINEDSIZE == aReflowInput.AvailableBSize() &&
        !GetPrevInFlow()) {
      desSize.BSize(wm) = CalcCellActualBSize(kidFrame, desSize.BSize(wm), wm);
    }
    // bsize may have changed, adjust descent to absorb any excess difference
    nscoord ascent;
    if (!kidFrame->PrincipalChildList()
             .FirstChild()
             ->PrincipalChildList()
             .FirstChild()) {
      ascent = desSize.BSize(wm);
    } else {
      ascent = kidFrame->GetCellBaseline();
    }
    nscoord descent = desSize.BSize(wm) - ascent;
    UpdateBSize(desSize.BSize(wm), ascent, descent, tableFrame, kidFrame);
  }
  return GetInitialBSize();
}

void nsTableRowFrame::PaintCellBackgroundsForFrame(
    nsIFrame* aFrame, nsDisplayListBuilder* aBuilder,
    const nsDisplayListSet& aLists, const nsPoint& aOffset) {
  // Compute background rect by iterating all cell frame.
  const nsPoint toReferenceFrame = aBuilder->ToReferenceFrame(aFrame);
  for (nsTableCellFrame* cell = GetFirstCell(); cell;
       cell = cell->GetNextCell()) {
    if (!cell->ShouldPaintBackground(aBuilder)) {
      continue;
    }

    auto cellRect =
        cell->GetRectRelativeToSelf() + cell->GetNormalPosition() + aOffset;
    if (!aBuilder->GetDirtyRect().Intersects(cellRect)) {
      continue;
    }
    cellRect += toReferenceFrame;
    nsDisplayBackgroundImage::AppendBackgroundItemsToTop(
        aBuilder, aFrame, cellRect, aLists.BorderBackground(), true,
        aFrame->GetRectRelativeToSelf() + toReferenceFrame, cell);
  }
}

void nsTableRowFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
                                       const nsDisplayListSet& aLists) {
  DisplayOutsetBoxShadow(aBuilder, aLists.BorderBackground());

  PaintCellBackgroundsForFrame(this, aBuilder, aLists);

  DisplayInsetBoxShadow(aBuilder, aLists.BorderBackground());

  DisplayOutline(aBuilder, aLists);

  for (nsIFrame* kid : PrincipalChildList()) {
    BuildDisplayListForChild(aBuilder, kid, aLists);
  }
}

LogicalSides nsTableRowFrame::GetLogicalSkipSides() const {
  LogicalSides skip(mWritingMode);
  if (MOZ_UNLIKELY(StyleBorder()->mBoxDecorationBreak ==
                   StyleBoxDecorationBreak::Clone)) {
    return skip;
  }

  if (GetPrevInFlow()) {
    skip |= eLogicalSideBitsBStart;
  }
  if (GetNextInFlow()) {
    skip |= eLogicalSideBitsBEnd;
  }
  return skip;
}

nscoord nsTableRowFrame::CalcCellActualBSize(nsTableCellFrame* aCellFrame,
                                             const nscoord& aDesiredBSize,
                                             WritingMode aWM) {
  nscoord specifiedBSize = 0;

  // Get the bsize specified in the style information
  const nsStylePosition* position = aCellFrame->StylePosition();

  int32_t rowSpan = GetTableFrame()->GetEffectiveRowSpan(*aCellFrame);

  const auto& bsizeStyleCoord = position->BSize(aWM);
  if (bsizeStyleCoord.ConvertsToLength()) {
    // In quirks mode, table cell isize should be content-box, but bsize
    // should be border-box.
    // Because of this historic anomaly, we do not use quirk.css
    // (since we can't specify one value of box-sizing for isize and another
    // for bsize)
    specifiedBSize = bsizeStyleCoord.ToLength();
    if (PresContext()->CompatibilityMode() != eCompatibility_NavQuirks &&
        position->mBoxSizing == StyleBoxSizing::Content) {
      specifiedBSize +=
          aCellFrame->GetLogicalUsedBorderAndPadding(aWM).BStartEnd(aWM);
    }

    if (1 == rowSpan) {
      SetFixedBSize(specifiedBSize);
    }
  } else if (bsizeStyleCoord.ConvertsToPercentage()) {
    if (1 == rowSpan) {
      SetPctBSize(bsizeStyleCoord.ToPercentage());
    }
  }

  // If the specified bsize is greater than the desired bsize,
  // then use the specified bsize
  return std::max(specifiedBSize, aDesiredBSize);
}

// Calculates the available isize for the table cell based on the known
// column isizes taking into account column spans and column spacing
static nscoord CalcAvailISize(nsTableFrame& aTableFrame,
                              nsTableCellFrame& aCellFrame) {
  nscoord cellAvailISize = 0;
  uint32_t colIndex = aCellFrame.ColIndex();
  int32_t colspan = aTableFrame.GetEffectiveColSpan(aCellFrame);
  NS_ASSERTION(colspan > 0, "effective colspan should be positive");
  nsTableFrame* fifTable =
      static_cast<nsTableFrame*>(aTableFrame.FirstInFlow());

  for (int32_t spanX = 0; spanX < colspan; spanX++) {
    cellAvailISize += fifTable->GetColumnISizeFromFirstInFlow(colIndex + spanX);
    if (spanX > 0 && aTableFrame.ColumnHasCellSpacingBefore(colIndex + spanX)) {
      cellAvailISize += aTableFrame.GetColSpacing(colIndex + spanX - 1);
    }
  }
  return cellAvailISize;
}

static nscoord GetSpaceBetween(int32_t aPrevColIndex, int32_t aColIndex,
                               int32_t aColSpan, nsTableFrame& aTableFrame,
                               bool aCheckVisibility) {
  nscoord space = 0;
  int32_t colIdx;
  nsTableFrame* fifTable =
      static_cast<nsTableFrame*>(aTableFrame.FirstInFlow());
  for (colIdx = aPrevColIndex + 1; aColIndex > colIdx; colIdx++) {
    bool isCollapsed = false;
    if (!aCheckVisibility) {
      space += fifTable->GetColumnISizeFromFirstInFlow(colIdx);
    } else {
      nsTableColFrame* colFrame = aTableFrame.GetColFrame(colIdx);
      const nsStyleVisibility* colVis = colFrame->StyleVisibility();
      bool collapseCol = StyleVisibility::Collapse == colVis->mVisible;
      nsIFrame* cgFrame = colFrame->GetParent();
      const nsStyleVisibility* groupVis = cgFrame->StyleVisibility();
      bool collapseGroup = StyleVisibility::Collapse == groupVis->mVisible;
      isCollapsed = collapseCol || collapseGroup;
      if (!isCollapsed)
        space += fifTable->GetColumnISizeFromFirstInFlow(colIdx);
    }
    if (!isCollapsed && aTableFrame.ColumnHasCellSpacingBefore(colIdx)) {
      space += aTableFrame.GetColSpacing(colIdx - 1);
    }
  }
  return space;
}

// subtract the bsizes of aRow's prev in flows from the unpaginated bsize
static nscoord CalcBSizeFromUnpaginatedBSize(nsTableRowFrame& aRow,
                                             WritingMode aWM) {
  nscoord bsize = 0;
  nsTableRowFrame* firstInFlow =
      static_cast<nsTableRowFrame*>(aRow.FirstInFlow());
  if (firstInFlow->HasUnpaginatedBSize()) {
    bsize = firstInFlow->GetUnpaginatedBSize();
    for (nsIFrame* prevInFlow = aRow.GetPrevInFlow(); prevInFlow;
         prevInFlow = prevInFlow->GetPrevInFlow()) {
      bsize -= prevInFlow->BSize(aWM);
    }
  }
  return std::max(bsize, 0);
}

void nsTableRowFrame::ReflowChildren(nsPresContext* aPresContext,
                                     ReflowOutput& aDesiredSize,
                                     const ReflowInput& aReflowInput,
                                     nsTableFrame& aTableFrame,
                                     nsReflowStatus& aStatus) {
  aStatus.Reset();

  // XXXldb Should we be checking constrained bsize instead?
  const bool isPaginated = aPresContext->IsPaginated();
  const bool borderCollapse = aTableFrame.IsBorderCollapse();

  int32_t cellColSpan =
      1;  // must be defined here so it's set properly for non-cell kids

  // remember the col index of the previous cell to handle rowspans into this
  // row
  int32_t prevColIndex = -1;
  nscoord iCoord = 0;  // running total of children inline-coord offset

  // This computes the max of all cell bsizes
  nscoord cellMaxBSize = 0;

  // Reflow each of our existing cell frames
  WritingMode wm = aReflowInput.GetWritingMode();
  nsSize containerSize = aReflowInput.ComputedSizeAsContainerIfConstrained();

  for (nsTableCellFrame* kidFrame = GetFirstCell(); kidFrame;
       kidFrame = kidFrame->GetNextCell()) {
    // See if we should only reflow the dirty child frames
    bool doReflowChild = true;
    if (!aReflowInput.ShouldReflowAllKids() && !aTableFrame.IsGeometryDirty() &&
        !kidFrame->IsSubtreeDirty()) {
      if (!aReflowInput.mFlags.mSpecialBSizeReflow) {
        doReflowChild = false;
      }
    } else if (NS_UNCONSTRAINEDSIZE != aReflowInput.AvailableBSize()) {
      // We don't reflow a rowspan >1 cell here with a constrained bsize.
      // That happens in nsTableRowGroupFrame::SplitSpanningCells.
      if (aTableFrame.GetEffectiveRowSpan(*kidFrame) > 1) {
        doReflowChild = false;
      }
    }
    if (aReflowInput.mFlags.mSpecialBSizeReflow && !isPaginated &&
        !kidFrame->HasAnyStateBits(NS_FRAME_CONTAINS_RELATIVE_BSIZE)) {
      continue;
    }

    uint32_t cellColIndex = kidFrame->ColIndex();
    cellColSpan = aTableFrame.GetEffectiveColSpan(*kidFrame);

    // If the adjacent cell is in a prior row (because of a rowspan) add in the
    // space NOTE: prevColIndex can be -1 here.
    if (prevColIndex != (static_cast<int32_t>(cellColIndex) - 1)) {
      iCoord += GetSpaceBetween(prevColIndex, cellColIndex, cellColSpan,
                                aTableFrame, false);
    }

    // remember the rightmost (ltr) or leftmost (rtl) column this cell spans
    // into
    prevColIndex = cellColIndex + (cellColSpan - 1);

    // Reflow the child frame
    nsRect kidRect = kidFrame->GetRect();
    LogicalPoint origKidNormalPosition =
        kidFrame->GetLogicalNormalPosition(wm, containerSize);

    nsRect kidInkOverflow = kidFrame->InkOverflowRect();
    LogicalPoint kidPosition(wm, iCoord, 0);
    bool firstReflow = kidFrame->HasAnyStateBits(NS_FRAME_FIRST_REFLOW);

    if (doReflowChild) {
      // Calculate the available isize for the table cell using the known
      // column isizes
      nscoord availCellISize = CalcAvailISize(aTableFrame, *kidFrame);

      Maybe<TableCellReflowInput> kidReflowInput;
      ReflowOutput desiredSize(aReflowInput);

      // If the avail isize is not the same as last time we reflowed the cell or
      // the cell wants to be bigger than what was available last time or
      // it is a style change reflow or we are printing, then we must reflow the
      // cell. Otherwise we can skip the reflow.
      // XXXldb Why is this condition distinct from doReflowChild above?
      NS_ASSERTION(kidFrame->GetWritingMode() == wm,
                   "expected consistent writing-mode within table");
      LogicalSize cellDesiredSize = kidFrame->GetDesiredSize();
      if ((availCellISize != kidFrame->GetPriorAvailISize()) ||
          (cellDesiredSize.ISize(wm) > kidFrame->GetPriorAvailISize()) ||
          HasAnyStateBits(NS_FRAME_IS_DIRTY) || isPaginated ||
          kidFrame->IsSubtreeDirty() ||
          // See if it needs a special reflow, or if it had one that we need to
          // undo.
          kidFrame->HasAnyStateBits(NS_FRAME_CONTAINS_RELATIVE_BSIZE) ||
          HasPctBSize()) {
        // Reflow the cell to fit the available isize, bsize
        // XXX The old IR_ChildIsDirty code used availCellISize here.
        LogicalSize kidAvailSize(wm, availCellISize,
                                 aReflowInput.AvailableBSize());

        // Reflow the child
        kidReflowInput.emplace(aPresContext, aReflowInput, kidFrame,
                               kidAvailSize,
                               ReflowInput::InitFlag::CallerWillInit);
        InitChildReflowInput(*aPresContext, kidAvailSize, borderCollapse,
                             *kidReflowInput);

        nsReflowStatus status;
        ReflowChild(kidFrame, aPresContext, desiredSize, *kidReflowInput, wm,
                    kidPosition, containerSize, ReflowChildFlags::Default,
                    status);

        // allow the table to determine if/how the table needs to be rebalanced
        // If any of the cells are not complete, then we're not complete
        if (status.IsIncomplete()) {
          aStatus.Reset();
          aStatus.SetIncomplete();
        }
      } else {
        if (iCoord != origKidNormalPosition.I(wm)) {
          kidFrame->InvalidateFrameSubtree();
        }

        desiredSize.SetSize(wm, cellDesiredSize);
        desiredSize.mOverflowAreas = kidFrame->GetOverflowAreas();

        // if we are in a floated table, our position is not yet established, so
        // we cannot reposition our views the containing block will do this for
        // us after positioning the table
        if (!aTableFrame.IsFloating()) {
          // Because we may have moved the frame we need to make sure any views
          // are positioned properly. We have to do this, because any one of our
          // parent frames could have moved and we have no way of knowing...
          nsTableFrame::RePositionViews(kidFrame);
        }
      }

      if (NS_UNCONSTRAINEDSIZE == aReflowInput.AvailableBSize()) {
        if (!GetPrevInFlow()) {
          desiredSize.BSize(wm) =
              CalcCellActualBSize(kidFrame, desiredSize.BSize(wm), wm);
        }
        // bsize may have changed, adjust descent to absorb any excess
        // difference
        nscoord ascent;
        if (!kidFrame->PrincipalChildList()
                 .FirstChild()
                 ->PrincipalChildList()
                 .FirstChild()) {
          ascent = desiredSize.BSize(wm);
        } else {
          ascent = kidFrame->GetCellBaseline();
        }
        nscoord descent = desiredSize.BSize(wm) - ascent;
        UpdateBSize(desiredSize.BSize(wm), ascent, descent, &aTableFrame,
                    kidFrame);
      } else {
        cellMaxBSize = std::max(cellMaxBSize, desiredSize.BSize(wm));
        int32_t rowSpan = aTableFrame.GetEffectiveRowSpan(*kidFrame);
        if (1 == rowSpan) {
          SetContentBSize(cellMaxBSize);
        }
      }

      // Place the child
      desiredSize.ISize(wm) = availCellISize;

      ReflowChildFlags flags = ReflowChildFlags::Default;

      if (kidReflowInput) {
        // We reflowed. Apply relative positioning in the normal way.
        flags = ReflowChildFlags::ApplyRelativePositioning;
      } else if (kidFrame->IsRelativelyOrStickyPositioned()) {
        // We didn't reflow.  Do the positioning part of what
        // MovePositionBy does internally.  (This codepath should really
        // be merged into the else below if we can.)
        nsMargin* computedOffsetProp =
            kidFrame->GetProperty(nsIFrame::ComputedOffsetProperty());

        // On our fist reflow sticky children may not have the property yet (we
        // need to reflow the children first to size the scroll frame).
        LogicalMargin computedOffsets(
            wm, computedOffsetProp ? *computedOffsetProp : nsMargin());
        ReflowInput::ApplyRelativePositioning(kidFrame, wm, computedOffsets,
                                              &kidPosition, containerSize);
      }

      // In vertical-rl mode, we are likely to have containerSize.width = 0
      // because ComputedWidth() was NS_UNCONSTRAINEDSIZE.
      // For cases where that's wrong, we will fix up the position later.
      FinishReflowChild(kidFrame, aPresContext, desiredSize,
                        kidReflowInput.ptrOr(nullptr), wm, kidPosition,
                        containerSize, flags);

      nsTableFrame* tableFrame = GetTableFrame();
      if (tableFrame->IsBorderCollapse()) {
        nsTableFrame::InvalidateTableFrame(kidFrame, kidRect, kidInkOverflow,
                                           firstReflow);
      }

      iCoord += desiredSize.ISize(wm);
    } else {
      if (iCoord != origKidNormalPosition.I(wm)) {
        // Invalidate the old position
        kidFrame->InvalidateFrameSubtree();
        // Move to the new position. As above, we need to account for relative
        // positioning.
        kidFrame->MovePositionBy(
            wm, LogicalPoint(wm, iCoord - origKidNormalPosition.I(wm), 0));
        nsTableFrame::RePositionViews(kidFrame);
        // invalidate the new position
        kidFrame->InvalidateFrameSubtree();
      }
      // we need to account for the cell's isize even if it isn't reflowed
      iCoord += kidFrame->ISize(wm);

      if (kidFrame->GetNextInFlow()) {
        aStatus.Reset();
        aStatus.SetIncomplete();
      }
    }
    ConsiderChildOverflow(aDesiredSize.mOverflowAreas, kidFrame);
    iCoord += aTableFrame.GetColSpacing(cellColIndex);
  }

  // Just set our isize to what was available.
  // The table will calculate the isize and not use our value.
  aDesiredSize.ISize(wm) = aReflowInput.AvailableISize();

  if (aReflowInput.mFlags.mSpecialBSizeReflow) {
    aDesiredSize.BSize(wm) = BSize(wm);
  } else if (NS_UNCONSTRAINEDSIZE == aReflowInput.AvailableBSize()) {
    aDesiredSize.BSize(wm) = CalcBSize(aReflowInput);
    if (GetPrevInFlow()) {
      nscoord bsize = CalcBSizeFromUnpaginatedBSize(*this, wm);
      aDesiredSize.BSize(wm) = std::max(aDesiredSize.BSize(wm), bsize);
    } else {
      if (isPaginated && HasStyleBSize()) {
        // set the unpaginated bsize so next in flows can try to honor it
        SetUnpaginatedBSize(aDesiredSize.BSize(wm));
      }
      if (isPaginated && HasUnpaginatedBSize()) {
        aDesiredSize.BSize(wm) =
            std::max(aDesiredSize.BSize(wm), GetUnpaginatedBSize());
      }
    }
  } else {  // constrained bsize, paginated
    // Compute the bsize we should have from style (subtracting the
    // bsize from our prev-in-flows from the style bsize)
    nscoord styleBSize = CalcBSizeFromUnpaginatedBSize(*this, wm);
    if (styleBSize > aReflowInput.AvailableBSize()) {
      styleBSize = aReflowInput.AvailableBSize();
      aStatus.SetIncomplete();
    }
    aDesiredSize.BSize(wm) = std::max(cellMaxBSize, styleBSize);
  }

  if (wm.IsVerticalRL()) {
    // Any children whose width was not the same as our final
    // aDesiredSize.BSize will have been misplaced earlier at the
    // FinishReflowChild stage. So fix them up now.
    for (nsIFrame* kidFrame : mFrames) {
      if (kidFrame->BSize(wm) != aDesiredSize.BSize(wm)) {
        kidFrame->MovePositionBy(
            wm,
            LogicalPoint(wm, 0, kidFrame->BSize(wm) - aDesiredSize.BSize(wm)));
        nsTableFrame::RePositionViews(kidFrame);
        // Do we need to InvalidateFrameSubtree() here?
      }
    }
  }

  aDesiredSize.UnionOverflowAreasWithDesiredBounds();
  FinishAndStoreOverflow(&aDesiredSize);
}

/** Layout the entire row.
 * This method stacks cells in the inline dir according to HTML 4.0 rules.
 */
void nsTableRowFrame::Reflow(nsPresContext* aPresContext,
                             ReflowOutput& aDesiredSize,
                             const ReflowInput& aReflowInput,
                             nsReflowStatus& aStatus) {
  MarkInReflow();
  DO_GLOBAL_REFLOW_COUNT("nsTableRowFrame");
  DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
  MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");

  WritingMode wm = aReflowInput.GetWritingMode();

  nsTableFrame* tableFrame = GetTableFrame();
  const nsStyleVisibility* rowVis = StyleVisibility();
  bool collapseRow = StyleVisibility::Collapse == rowVis->mVisible;
  if (collapseRow) {
    tableFrame->SetNeedToCollapse(true);
  }

  // see if a special bsize reflow needs to occur due to having a pct bsize
  nsTableFrame::CheckRequestSpecialBSizeReflow(aReflowInput);

  // See if we have a cell with specified/pct bsize
  InitHasCellWithStyleBSize(tableFrame);

  ReflowChildren(aPresContext, aDesiredSize, aReflowInput, *tableFrame,
                 aStatus);

  if (aPresContext->IsPaginated() && !aStatus.IsFullyComplete() &&
      ShouldAvoidBreakInside(aReflowInput)) {
    aStatus.SetInlineLineBreakBeforeAndReset();
  }

  // Just set our isize to what was available.
  // The table will calculate the isize and not use our value.
  aDesiredSize.ISize(wm) = aReflowInput.AvailableISize();

  // If our parent is in initial reflow, it'll handle invalidating our
  // entire overflow rect.
  if (!GetParent()->HasAnyStateBits(NS_FRAME_FIRST_REFLOW) &&
      nsSize(aDesiredSize.Width(), aDesiredSize.Height()) != mRect.Size()) {
    InvalidateFrame();
  }

  // Any absolutely-positioned children will get reflowed in
  // nsIFrame::FixupPositionedTableParts in another pass, so propagate our
  // dirtiness to them before our parent clears our dirty bits.
  PushDirtyBitToAbsoluteFrames();
}

/**
 * This function is called by the row group frame's SplitRowGroup() code when
 * pushing a row frame that has cell frames that span into it. The cell frame
 * should be reflowed with the specified height
 */
nscoord nsTableRowFrame::ReflowCellFrame(nsPresContext* aPresContext,
                                         const ReflowInput& aReflowInput,
                                         bool aIsTopOfPage,
                                         nsTableCellFrame* aCellFrame,
                                         nscoord aAvailableBSize,
                                         nsReflowStatus& aStatus) {
  MOZ_ASSERT(aAvailableBSize != NS_UNCONSTRAINEDSIZE,
             "Why split cell frame if available bsize is unconstrained?");
  WritingMode wm = aReflowInput.GetWritingMode();

  // Reflow the cell frame with the specified height. Use the existing width
  nsSize containerSize = aCellFrame->GetSize();
  LogicalRect cellRect = aCellFrame->GetLogicalRect(wm, containerSize);
  nsRect cellInkOverflow = aCellFrame->InkOverflowRect();

  LogicalSize cellSize = cellRect.Size(wm);
  LogicalSize availSize(wm, cellRect.ISize(wm), aAvailableBSize);
  bool borderCollapse = GetTableFrame()->IsBorderCollapse();
  NS_ASSERTION(aCellFrame->GetWritingMode() == wm,
               "expected consistent writing-mode within table");
  TableCellReflowInput cellReflowInput(aPresContext, aReflowInput, aCellFrame,
                                       availSize,
                                       ReflowInput::InitFlag::CallerWillInit);
  InitChildReflowInput(*aPresContext, availSize, borderCollapse,
                       cellReflowInput);
  cellReflowInput.mFlags.mIsTopOfPage = aIsTopOfPage;

  ReflowOutput desiredSize(aReflowInput);

  ReflowChild(aCellFrame, aPresContext, desiredSize, cellReflowInput, 0, 0,
              ReflowChildFlags::NoMoveFrame, aStatus);
  const bool isTruncated =
      aAvailableBSize < desiredSize.BSize(wm) &&
      !aIsTopOfPage;  // XXX Is !aIsTopOfPage check really necessary?
  const bool isCompleteAndNotTruncated = aStatus.IsComplete() && !isTruncated;
  if (isCompleteAndNotTruncated) {
    desiredSize.BSize(wm) = aAvailableBSize;
  }
  aCellFrame->SetSize(
      wm, LogicalSize(wm, cellSize.ISize(wm), desiredSize.BSize(wm)));

  // Note: BlockDirAlignChild can affect the overflow rect.
  // XXX What happens if this cell has 'vertical-align: baseline' ?
  // XXX Why is it assumed that the cell's ascent hasn't changed ?
  if (isCompleteAndNotTruncated) {
    aCellFrame->BlockDirAlignChild(wm, mMaxCellAscent);
  }

  nsTableFrame::InvalidateTableFrame(
      aCellFrame, cellRect.GetPhysicalRect(wm, containerSize), cellInkOverflow,
      aCellFrame->HasAnyStateBits(NS_FRAME_FIRST_REFLOW));

  aCellFrame->DidReflow(aPresContext, nullptr);

  return desiredSize.BSize(wm);
}

nscoord nsTableRowFrame::CollapseRowIfNecessary(nscoord aRowOffset,
                                                nscoord aISize,
                                                bool aCollapseGroup,
                                                bool& aDidCollapse) {
  const nsStyleVisibility* rowVis = StyleVisibility();
  bool collapseRow = StyleVisibility::Collapse == rowVis->mVisible;
  nsTableFrame* tableFrame =
      static_cast<nsTableFrame*>(GetTableFrame()->FirstInFlow());
  if (collapseRow) {
    tableFrame->SetNeedToCollapse(true);
  }

  if (aRowOffset != 0) {
    // We're moving, so invalidate our old position
    InvalidateFrameSubtree();
  }

  WritingMode wm = GetWritingMode();

  nsSize parentSize = GetParent()->GetSize();
  LogicalRect rowRect = GetLogicalRect(wm, parentSize);
  nsRect oldRect = mRect;
  nsRect oldInkOverflow = InkOverflowRect();

  rowRect.BStart(wm) -= aRowOffset;
  rowRect.ISize(wm) = aISize;
  OverflowAreas overflow;
  nscoord shift = 0;
  nsSize containerSize = mRect.Size();

  if (aCollapseGroup || collapseRow) {
    aDidCollapse = true;
    shift = rowRect.BSize(wm);
    nsTableCellFrame* cellFrame = GetFirstCell();
    if (cellFrame) {
      uint32_t rowIndex = cellFrame->RowIndex();
      shift += tableFrame->GetRowSpacing(rowIndex);
      while (cellFrame) {
        LogicalRect cRect = cellFrame->GetLogicalRect(wm, containerSize);
        // If aRowOffset != 0, there's no point in invalidating the cells, since
        // we've already invalidated our overflow area.  Note that we _do_ still
        // need to invalidate if our row is not moving, because the cell might
        // span out of this row, so invalidating our row rect won't do enough.
        if (aRowOffset == 0) {
          InvalidateFrame();
        }
        cRect.BSize(wm) = 0;
        cellFrame->SetRect(wm, cRect, containerSize);
        cellFrame = cellFrame->GetNextCell();
      }
    } else {
      shift += tableFrame->GetRowSpacing(GetRowIndex());
    }
    rowRect.BSize(wm) = 0;
  } else {  // row is not collapsed
    // remember the col index of the previous cell to handle rowspans into this
    // row
    int32_t prevColIndex = -1;
    nscoord iPos = 0;  // running total of children inline-axis offset
    nsTableFrame* fifTable =
        static_cast<nsTableFrame*>(tableFrame->FirstInFlow());

    for (nsTableCellFrame* cellFrame = GetFirstCell(); cellFrame;
         cellFrame = cellFrame->GetNextCell()) {
      uint32_t cellColIndex = cellFrame->ColIndex();
      int32_t cellColSpan = tableFrame->GetEffectiveColSpan(*cellFrame);

      // If the adjacent cell is in a prior row (because of a rowspan) add in
      // the space
      // NOTE: prevColIndex can be -1 here.
      if (prevColIndex != (static_cast<int32_t>(cellColIndex) - 1)) {
        iPos += GetSpaceBetween(prevColIndex, cellColIndex, cellColSpan,
                                *tableFrame, true);
      }
      LogicalRect cRect(wm, iPos, 0, 0, rowRect.BSize(wm));

      // remember the last (iend-wards-most) column this cell spans into
      prevColIndex = cellColIndex + cellColSpan - 1;
      int32_t actualColSpan = cellColSpan;
      bool isVisible = false;
      for (int32_t colIdx = cellColIndex; actualColSpan > 0;
           colIdx++, actualColSpan--) {
        nsTableColFrame* colFrame = tableFrame->GetColFrame(colIdx);
        const nsStyleVisibility* colVis = colFrame->StyleVisibility();
        bool collapseCol = StyleVisibility::Collapse == colVis->mVisible;
        nsIFrame* cgFrame = colFrame->GetParent();
        const nsStyleVisibility* groupVis = cgFrame->StyleVisibility();
        bool collapseGroup = StyleVisibility::Collapse == groupVis->mVisible;
        bool isCollapsed = collapseCol || collapseGroup;
        if (!isCollapsed) {
          cRect.ISize(wm) += fifTable->GetColumnISizeFromFirstInFlow(colIdx);
          isVisible = true;
          if ((actualColSpan > 1)) {
            nsTableColFrame* nextColFrame = tableFrame->GetColFrame(colIdx + 1);
            const nsStyleVisibility* nextColVis =
                nextColFrame->StyleVisibility();
            if (StyleVisibility::Collapse != nextColVis->mVisible &&
                tableFrame->ColumnHasCellSpacingBefore(colIdx + 1)) {
              cRect.ISize(wm) += tableFrame->GetColSpacing(cellColIndex);
            }
          }
        }
      }
      iPos += cRect.ISize(wm);
      if (isVisible) {
        iPos += tableFrame->GetColSpacing(cellColIndex);
      }
      int32_t actualRowSpan = tableFrame->GetEffectiveRowSpan(*cellFrame);
      nsTableRowFrame* rowFrame = GetNextRow();
      for (actualRowSpan--; actualRowSpan > 0 && rowFrame; actualRowSpan--) {
        const nsStyleVisibility* nextRowVis = rowFrame->StyleVisibility();
        bool collapseNextRow =
            StyleVisibility::Collapse == nextRowVis->mVisible;
        if (!collapseNextRow) {
          LogicalRect nextRect = rowFrame->GetLogicalRect(wm, containerSize);
          cRect.BSize(wm) += nextRect.BSize(wm) +
                             tableFrame->GetRowSpacing(rowFrame->GetRowIndex());
        }
        rowFrame = rowFrame->GetNextRow();
      }

      nsRect oldCellRect = cellFrame->GetRect();
      LogicalPoint oldCellNormalPos =
          cellFrame->GetLogicalNormalPosition(wm, containerSize);

      nsRect oldCellInkOverflow = cellFrame->InkOverflowRect();

      if (aRowOffset == 0 && cRect.Origin(wm) != oldCellNormalPos) {
        // We're moving the cell.  Invalidate the old overflow area
        cellFrame->InvalidateFrameSubtree();
      }

      cellFrame->MovePositionBy(wm, cRect.Origin(wm) - oldCellNormalPos);
      cellFrame->SetSize(wm, cRect.Size(wm));

      // XXXbz This looks completely bogus in the cases when we didn't
      // collapse the cell!
      LogicalRect cellBounds(wm, 0, 0, cRect.ISize(wm), cRect.BSize(wm));
      nsRect cellPhysicalBounds = cellBounds.GetPhysicalRect(wm, containerSize);
      OverflowAreas cellOverflow(cellPhysicalBounds, cellPhysicalBounds);
      cellFrame->FinishAndStoreOverflow(cellOverflow,
                                        cRect.Size(wm).GetPhysicalSize(wm));
      nsTableFrame::RePositionViews(cellFrame);
      ConsiderChildOverflow(overflow, cellFrame);

      if (aRowOffset == 0) {
        nsTableFrame::InvalidateTableFrame(cellFrame, oldCellRect,
                                           oldCellInkOverflow, false);
      }
    }
  }

  SetRect(wm, rowRect, containerSize);
  overflow.UnionAllWith(nsRect(0, 0, rowRect.Width(wm), rowRect.Height(wm)));
  FinishAndStoreOverflow(overflow, rowRect.Size(wm).GetPhysicalSize(wm));

  nsTableFrame::RePositionViews(this);
  nsTableFrame::InvalidateTableFrame(this, oldRect, oldInkOverflow, false);
  return shift;
}

/*
 * The following method is called by the row group frame's SplitRowGroup()
 * when it creates a continuing cell frame and wants to insert it into the
 * row's child list.
 */
void nsTableRowFrame::InsertCellFrame(nsTableCellFrame* aFrame,
                                      int32_t aColIndex) {
  // Find the cell frame where col index < aColIndex
  nsTableCellFrame* priorCell = nullptr;

  for (nsTableCellFrame* cellFrame = GetFirstCell(); cellFrame;
       cellFrame = cellFrame->GetNextCell()) {
    uint32_t colIndex = cellFrame->ColIndex();
    // Can aColIndex be -1 here?  Let's assume it can for now.
    if (static_cast<int32_t>(colIndex) < aColIndex) {
      priorCell = cellFrame;
    } else {
      break;
    }
  }
  mFrames.InsertFrame(this, priorCell, aFrame);
}

nsTableRowFrame* nsTableRowFrame::GetPrevRow() const {
  nsIFrame* prevSibling = GetPrevSibling();
  MOZ_ASSERT(
      !prevSibling || static_cast<nsTableRowFrame*>(do_QueryFrame(prevSibling)),
      "How do we have a non-row sibling?");
  return static_cast<nsTableRowFrame*>(prevSibling);
}

nsTableRowFrame* nsTableRowFrame::GetNextRow() const {
  nsIFrame* nextSibling = GetNextSibling();
  MOZ_ASSERT(
      !nextSibling || static_cast<nsTableRowFrame*>(do_QueryFrame(nextSibling)),
      "How do we have a non-row sibling?");
  return static_cast<nsTableRowFrame*>(nextSibling);
}

// This property is only set on the first-in-flow of nsTableRowFrame.
NS_DECLARE_FRAME_PROPERTY_SMALL_VALUE(TableRowUnpaginatedBSizeProperty, nscoord)

void nsTableRowFrame::SetUnpaginatedBSize(nscoord aValue) {
  MOZ_ASSERT(!GetPrevInFlow(),
             "TableRowUnpaginatedBSizeProperty should only be set on the "
             "first-in-flow!");
  AddStateBits(NS_TABLE_ROW_HAS_UNPAGINATED_BSIZE);
  SetProperty(TableRowUnpaginatedBSizeProperty(), aValue);
}

nscoord nsTableRowFrame::GetUnpaginatedBSize() const {
  return GetProperty(TableRowUnpaginatedBSizeProperty());
}

#ifdef ACCESSIBILITY
a11y::AccType nsTableRowFrame::AccessibleType() {
  return a11y::eHTMLTableRowType;
}
#endif
/**
 * Sets the NS_ROW_HAS_CELL_WITH_STYLE_BSIZE bit to indicate whether
 * this row has any cells that have non-auto-bsize.  (Row-spanning
 * cells are ignored.)
 */
void nsTableRowFrame::InitHasCellWithStyleBSize(nsTableFrame* aTableFrame) {
  WritingMode wm = GetWritingMode();

  for (nsTableCellFrame* cellFrame = GetFirstCell(); cellFrame;
       cellFrame = cellFrame->GetNextCell()) {
    // Ignore row-spanning cells
    const auto& cellBSize = cellFrame->StylePosition()->BSize(wm);
    if (aTableFrame->GetEffectiveRowSpan(*cellFrame) == 1 &&
        !cellBSize.IsAuto() &&
        /* calc() with both percentages and lengths treated like 'auto' */
        (cellBSize.ConvertsToLength() || cellBSize.ConvertsToPercentage())) {
      AddStateBits(NS_ROW_HAS_CELL_WITH_STYLE_BSIZE);
      return;
    }
  }
  RemoveStateBits(NS_ROW_HAS_CELL_WITH_STYLE_BSIZE);
}

void nsTableRowFrame::InvalidateFrame(uint32_t aDisplayItemKey,
                                      bool aRebuildDisplayItems) {
  nsIFrame::InvalidateFrame(aDisplayItemKey, aRebuildDisplayItems);
  if (GetTableFrame()->IsBorderCollapse()) {
    const bool rebuild = StaticPrefs::layout_display_list_retain_sc();
    GetParent()->InvalidateFrameWithRect(InkOverflowRect() + GetPosition(),
                                         aDisplayItemKey, rebuild);
  }
}

void nsTableRowFrame::InvalidateFrameWithRect(const nsRect& aRect,
                                              uint32_t aDisplayItemKey,
                                              bool aRebuildDisplayItems) {
  nsIFrame::InvalidateFrameWithRect(aRect, aDisplayItemKey,
                                    aRebuildDisplayItems);
  // If we have filters applied that would affects our bounds, then
  // we get an inactive layer created and this is computed
  // within FrameLayerBuilder
  GetParent()->InvalidateFrameWithRect(aRect + GetPosition(), aDisplayItemKey,
                                       aRebuildDisplayItems);
}

/* ----- global methods ----- */

nsTableRowFrame* NS_NewTableRowFrame(PresShell* aPresShell,
                                     ComputedStyle* aStyle) {
  return new (aPresShell) nsTableRowFrame(aStyle, aPresShell->GetPresContext());
}

NS_IMPL_FRAMEARENA_HELPERS(nsTableRowFrame)

#ifdef DEBUG_FRAME_DUMP
nsresult nsTableRowFrame::GetFrameName(nsAString& aResult) const {
  return MakeFrameName(u"TableRow"_ns, aResult);
}
#endif