gecko-dev/layout/tables/nsTableColGroupFrame.cpp

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/* -*- 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 "nsTableColGroupFrame.h"
#include "nsTableColFrame.h"
#include "nsTableFrame.h"
#include "nsStyleContext.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsHTMLParts.h"
#include "nsGkAtoms.h"
#include "nsCOMPtr.h"
#include "nsCSSRendering.h"
#include "nsIPresShell.h"
using namespace mozilla;
#define COL_GROUP_TYPE_BITS (NS_FRAME_STATE_BIT(30) | \
NS_FRAME_STATE_BIT(31))
#define COL_GROUP_TYPE_OFFSET 30
nsTableColGroupType
nsTableColGroupFrame::GetColType() const
{
return (nsTableColGroupType)((mState & COL_GROUP_TYPE_BITS) >> COL_GROUP_TYPE_OFFSET);
}
void nsTableColGroupFrame::SetColType(nsTableColGroupType aType)
{
NS_ASSERTION(GetColType() == eColGroupContent,
"should only call nsTableColGroupFrame::SetColType with aType "
"!= eColGroupContent once");
uint32_t type = aType - eColGroupContent;
RemoveStateBits(COL_GROUP_TYPE_BITS);
AddStateBits(nsFrameState(type << COL_GROUP_TYPE_OFFSET));
}
void nsTableColGroupFrame::ResetColIndices(nsIFrame* aFirstColGroup,
int32_t aFirstColIndex,
nsIFrame* aStartColFrame)
{
nsTableColGroupFrame* colGroupFrame = (nsTableColGroupFrame*)aFirstColGroup;
int32_t colIndex = aFirstColIndex;
while (colGroupFrame) {
if (nsGkAtoms::tableColGroupFrame == colGroupFrame->GetType()) {
// reset the starting col index for the first cg only if we should reset
// the whole colgroup (aStartColFrame defaults to nullptr) or if
// aFirstColIndex is smaller than the existing starting col index
if ((colIndex != aFirstColIndex) ||
(colIndex < colGroupFrame->GetStartColumnIndex()) ||
!aStartColFrame) {
colGroupFrame->SetStartColumnIndex(colIndex);
}
nsIFrame* colFrame = aStartColFrame;
if (!colFrame || (colIndex != aFirstColIndex)) {
colFrame = colGroupFrame->PrincipalChildList().FirstChild();
}
while (colFrame) {
if (nsGkAtoms::tableColFrame == colFrame->GetType()) {
((nsTableColFrame*)colFrame)->SetColIndex(colIndex);
colIndex++;
}
colFrame = colFrame->GetNextSibling();
}
}
colGroupFrame = static_cast<nsTableColGroupFrame*>
(colGroupFrame->GetNextSibling());
}
}
nsresult
nsTableColGroupFrame::AddColsToTable(int32_t aFirstColIndex,
bool aResetSubsequentColIndices,
const nsFrameList::Slice& aCols)
{
nsTableFrame* tableFrame = GetTableFrame();
tableFrame->InvalidateFrameSubtree();
// set the col indices of the col frames and and add col info to the table
int32_t colIndex = aFirstColIndex;
nsFrameList::Enumerator e(aCols);
for (; !e.AtEnd(); e.Next()) {
((nsTableColFrame*)e.get())->SetColIndex(colIndex);
mColCount++;
tableFrame->InsertCol((nsTableColFrame &)*e.get(), colIndex);
colIndex++;
}
for (nsFrameList::Enumerator eTail = e.GetUnlimitedEnumerator();
!eTail.AtEnd();
eTail.Next()) {
((nsTableColFrame*)eTail.get())->SetColIndex(colIndex);
colIndex++;
}
// We have already set the colindex for all the colframes in this
// colgroup that come after the first inserted colframe, but there could
// be other colgroups following this one and their colframes need
// correct colindices too.
if (aResetSubsequentColIndices && GetNextSibling()) {
ResetColIndices(GetNextSibling(), colIndex);
}
return NS_OK;
}
nsTableColGroupFrame*
nsTableColGroupFrame::GetLastRealColGroup(nsTableFrame* aTableFrame)
{
nsFrameList colGroups = aTableFrame->GetColGroups();
nsIFrame* nextToLastColGroup = nullptr;
nsFrameList::FrameLinkEnumerator link(colGroups);
for ( ; !link.AtEnd(); link.Next()) {
nextToLastColGroup = link.PrevFrame();
}
if (!link.PrevFrame()) {
return nullptr; // there are no col group frames
}
nsTableColGroupType lastColGroupType =
static_cast<nsTableColGroupFrame*>(link.PrevFrame())->GetColType();
if (eColGroupAnonymousCell == lastColGroupType) {
return static_cast<nsTableColGroupFrame*>(nextToLastColGroup);
}
return static_cast<nsTableColGroupFrame*>(link.PrevFrame());
}
// don't set mColCount here, it is done in AddColsToTable
void
nsTableColGroupFrame::SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList)
{
MOZ_ASSERT(mFrames.IsEmpty(),
"unexpected second call to SetInitialChildList");
MOZ_ASSERT(aListID == kPrincipalList, "unexpected child list");
if (aChildList.IsEmpty()) {
GetTableFrame()->AppendAnonymousColFrames(this, GetSpan(),
eColAnonymousColGroup, false);
return;
}
mFrames.AppendFrames(this, aChildList);
}
/* virtual */ void
nsTableColGroupFrame::DidSetStyleContext(nsStyleContext* aOldStyleContext)
{
nsContainerFrame::DidSetStyleContext(aOldStyleContext);
if (!aOldStyleContext) //avoid this on init
return;
nsTableFrame* tableFrame = GetTableFrame();
if (tableFrame->IsBorderCollapse() &&
tableFrame->BCRecalcNeeded(aOldStyleContext, StyleContext())) {
int32_t colCount = GetColCount();
if (!colCount)
return; // this is a degenerated colgroup
TableArea damageArea(GetFirstColumn()->GetColIndex(), 0, colCount,
tableFrame->GetRowCount());
tableFrame->AddBCDamageArea(damageArea);
}
}
void
nsTableColGroupFrame::AppendFrames(ChildListID aListID,
nsFrameList& aFrameList)
{
NS_ASSERTION(aListID == kPrincipalList, "unexpected child list");
nsTableColFrame* col = GetFirstColumn();
nsTableColFrame* nextCol;
while (col && col->GetColType() == eColAnonymousColGroup) {
// this colgroup spans one or more columns but now that there is a
// real column below, spanned anonymous columns should be removed,
// since the HTML spec says to ignore the span of a colgroup if it
// has content columns in it.
nextCol = col->GetNextCol();
RemoveFrame(kPrincipalList, col);
col = nextCol;
}
const nsFrameList::Slice& newFrames =
mFrames.AppendFrames(this, aFrameList);
InsertColsReflow(GetStartColumnIndex() + mColCount, newFrames);
}
void
nsTableColGroupFrame::InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList)
{
NS_ASSERTION(aListID == kPrincipalList, "unexpected child list");
NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this,
"inserting after sibling frame with different parent");
nsTableColFrame* col = GetFirstColumn();
nsTableColFrame* nextCol;
while (col && col->GetColType() == eColAnonymousColGroup) {
// this colgroup spans one or more columns but now that there is a
// real column below, spanned anonymous columns should be removed,
// since the HTML spec says to ignore the span of a colgroup if it
// has content columns in it.
nextCol = col->GetNextCol();
if (col == aPrevFrame) {
// This can happen when we're being appended to
NS_ASSERTION(!nextCol || nextCol->GetColType() != eColAnonymousColGroup,
"Inserting in the middle of our anonymous cols?");
// We'll want to insert at the beginning
aPrevFrame = nullptr;
}
RemoveFrame(kPrincipalList, col);
col = nextCol;
}
NS_ASSERTION(!aPrevFrame || aPrevFrame == aPrevFrame->LastContinuation(),
"Prev frame should be last in continuation chain");
NS_ASSERTION(!aPrevFrame || !GetNextColumn(aPrevFrame) ||
GetNextColumn(aPrevFrame)->GetColType() != eColAnonymousCol,
"Shouldn't be inserting before a spanned colframe");
const nsFrameList::Slice& newFrames =
mFrames.InsertFrames(this, aPrevFrame, aFrameList);
nsIFrame* prevFrame = nsTableFrame::GetFrameAtOrBefore(this, aPrevFrame,
nsGkAtoms::tableColFrame);
int32_t colIndex = (prevFrame) ? ((nsTableColFrame*)prevFrame)->GetColIndex() + 1 : GetStartColumnIndex();
InsertColsReflow(colIndex, newFrames);
}
void
nsTableColGroupFrame::InsertColsReflow(int32_t aColIndex,
const nsFrameList::Slice& aCols)
{
AddColsToTable(aColIndex, true, aCols);
PresContext()->PresShell()->FrameNeedsReflow(this,
nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
}
void
nsTableColGroupFrame::RemoveChild(nsTableColFrame& aChild,
bool aResetSubsequentColIndices)
{
int32_t colIndex = 0;
nsIFrame* nextChild = nullptr;
if (aResetSubsequentColIndices) {
colIndex = aChild.GetColIndex();
nextChild = aChild.GetNextSibling();
}
mFrames.DestroyFrame(&aChild);
mColCount--;
if (aResetSubsequentColIndices) {
if (nextChild) { // reset inside this and all following colgroups
ResetColIndices(this, colIndex, nextChild);
}
else {
nsIFrame* nextGroup = GetNextSibling();
if (nextGroup) // reset next and all following colgroups
ResetColIndices(nextGroup, colIndex);
}
}
PresContext()->PresShell()->FrameNeedsReflow(this,
nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
}
void
nsTableColGroupFrame::RemoveFrame(ChildListID aListID,
nsIFrame* aOldFrame)
{
NS_ASSERTION(aListID == kPrincipalList, "unexpected child list");
if (!aOldFrame) {
return;
}
bool contentRemoval = false;
if (nsGkAtoms::tableColFrame == aOldFrame->GetType()) {
nsTableColFrame* colFrame = (nsTableColFrame*)aOldFrame;
if (colFrame->GetColType() == eColContent) {
contentRemoval = true;
// Remove any anonymous column frames this <col> produced via a colspan
nsTableColFrame* col = colFrame->GetNextCol();
nsTableColFrame* nextCol;
while (col && col->GetColType() == eColAnonymousCol) {
#ifdef DEBUG
nsIFrame* providerFrame;
nsStyleContext* psc = colFrame->GetParentStyleContext(&providerFrame);
if (colFrame->StyleContext()->GetParent() == psc) {
NS_ASSERTION(col->StyleContext() == colFrame->StyleContext() &&
col->GetContent() == colFrame->GetContent(),
"How did that happen??");
}
// else colFrame is being removed because of a frame
// reconstruct on it, and its style context is still the old
// one, so we can't assert anything about how it compares to
// col's style context.
#endif
nextCol = col->GetNextCol();
RemoveFrame(kPrincipalList, col);
col = nextCol;
}
}
int32_t colIndex = colFrame->GetColIndex();
// The RemoveChild call handles calling FrameNeedsReflow on us.
RemoveChild(*colFrame, true);
nsTableFrame* tableFrame = GetTableFrame();
tableFrame->RemoveCol(this, colIndex, true, true);
if (mFrames.IsEmpty() && contentRemoval &&
GetColType() == eColGroupContent) {
tableFrame->AppendAnonymousColFrames(this, GetSpan(),
eColAnonymousColGroup, true);
}
}
else {
mFrames.DestroyFrame(aOldFrame);
}
}
nsIFrame::LogicalSides
nsTableColGroupFrame::GetLogicalSkipSides(const nsHTMLReflowState* aReflowState) const
{
if (MOZ_UNLIKELY(StyleBorder()->mBoxDecorationBreak ==
NS_STYLE_BOX_DECORATION_BREAK_CLONE)) {
return LogicalSides();
}
LogicalSides skip;
if (nullptr != GetPrevInFlow()) {
skip |= eLogicalSideBitsBStart;
}
if (nullptr != GetNextInFlow()) {
skip |= eLogicalSideBitsBEnd;
}
return skip;
}
void
nsTableColGroupFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsTableColGroupFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
NS_ASSERTION(nullptr!=mContent, "bad state -- null content for frame");
const nsStyleVisibility* groupVis = StyleVisibility();
bool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupVis->mVisible);
if (collapseGroup) {
GetTableFrame()->SetNeedToCollapse(true);
}
// for every content child that (is a column thingy and does not already have a frame)
// create a frame and adjust it's style
for (nsIFrame *kidFrame = mFrames.FirstChild(); kidFrame;
kidFrame = kidFrame->GetNextSibling()) {
// Give the child frame a chance to reflow, even though we know it'll have 0 size
nsHTMLReflowMetrics kidSize(aReflowState);
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
LogicalSize(kidFrame->GetWritingMode()));
nsReflowStatus status;
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, 0, 0, 0, status);
FinishReflowChild(kidFrame, aPresContext, kidSize, nullptr, 0, 0, 0);
}
aDesiredSize.ClearSize();
aStatus = NS_FRAME_COMPLETE;
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
}
nsTableColFrame * nsTableColGroupFrame::GetFirstColumn()
{
return GetNextColumn(nullptr);
}
nsTableColFrame * nsTableColGroupFrame::GetNextColumn(nsIFrame *aChildFrame)
{
nsTableColFrame *result = nullptr;
nsIFrame *childFrame = aChildFrame;
if (!childFrame) {
childFrame = mFrames.FirstChild();
}
else {
childFrame = childFrame->GetNextSibling();
}
while (childFrame)
{
if (NS_STYLE_DISPLAY_TABLE_COLUMN ==
childFrame->StyleDisplay()->mDisplay)
{
result = (nsTableColFrame *)childFrame;
break;
}
childFrame = childFrame->GetNextSibling();
}
return result;
}
int32_t nsTableColGroupFrame::GetSpan()
{
return StyleTable()->mSpan;
}
void nsTableColGroupFrame::SetContinuousBCBorderWidth(LogicalSide aForSide,
BCPixelSize aPixelValue)
{
switch (aForSide) {
case eLogicalSideBStart:
mBStartContBorderWidth = aPixelValue;
return;
case eLogicalSideBEnd:
mBEndContBorderWidth = aPixelValue;
return;
default:
NS_ERROR("invalid side arg");
}
}
void nsTableColGroupFrame::GetContinuousBCBorderWidth(WritingMode aWM,
LogicalMargin& aBorder)
{
int32_t aPixelsToTwips = nsPresContext::AppUnitsPerCSSPixel();
nsTableColFrame* col = GetTableFrame()->
GetColFrame(mStartColIndex + mColCount - 1);
col->GetContinuousBCBorderWidth(aWM, aBorder);
aBorder.BStart(aWM) = BC_BORDER_END_HALF_COORD(aPixelsToTwips,
mBStartContBorderWidth);
aBorder.BEnd(aWM) = BC_BORDER_START_HALF_COORD(aPixelsToTwips,
mBEndContBorderWidth);
}
/* ----- global methods ----- */
nsTableColGroupFrame*
NS_NewTableColGroupFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsTableColGroupFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsTableColGroupFrame)
nsIAtom*
nsTableColGroupFrame::GetType() const
{
return nsGkAtoms::tableColGroupFrame;
}
void
nsTableColGroupFrame::InvalidateFrame(uint32_t aDisplayItemKey)
{
nsIFrame::InvalidateFrame(aDisplayItemKey);
GetParent()->InvalidateFrameWithRect(GetVisualOverflowRect() + GetPosition(), aDisplayItemKey);
}
void
nsTableColGroupFrame::InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey)
{
nsIFrame::InvalidateFrameWithRect(aRect, aDisplayItemKey);
// 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);
}
#ifdef DEBUG_FRAME_DUMP
nsresult
nsTableColGroupFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("TableColGroup"), aResult);
}
void nsTableColGroupFrame::Dump(int32_t aIndent)
{
char* indent = new char[aIndent + 1];
if (!indent) return;
for (int32_t i = 0; i < aIndent + 1; i++) {
indent[i] = ' ';
}
indent[aIndent] = 0;
printf("%s**START COLGROUP DUMP**\n%s startcolIndex=%d colcount=%d span=%d coltype=",
indent, indent, GetStartColumnIndex(), GetColCount(), GetSpan());
nsTableColGroupType colType = GetColType();
switch (colType) {
case eColGroupContent:
printf(" content ");
break;
case eColGroupAnonymousCol:
printf(" anonymous-column ");
break;
case eColGroupAnonymousCell:
printf(" anonymous-cell ");
break;
}
// verify the colindices
int32_t j = GetStartColumnIndex();
nsTableColFrame* col = GetFirstColumn();
while (col) {
NS_ASSERTION(j == col->GetColIndex(), "wrong colindex on col frame");
col = col->GetNextCol();
j++;
}
NS_ASSERTION((j - GetStartColumnIndex()) == GetColCount(),
"number of cols out of sync");
printf("\n%s**END COLGROUP DUMP** ", indent);
delete [] indent;
}
#endif