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gecko-dev/layout/tables/nsTableFrame.cpp
sspitzer%netscape.com 1bf149f289 set deleted pointers to nsnull. just to be safe. r=hyatt
1999-07-01 07:12:46 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsCOMPtr.h"
#include "nsTableFrame.h"
#include "nsIRenderingContext.h"
#include "nsIStyleContext.h"
#include "nsIContent.h"
#include "nsCellMap.h"
#include "nsTableCellFrame.h"
#include "nsHTMLParts.h"
#include "nsTableColFrame.h"
#include "nsTableColGroupFrame.h"
#include "nsTableRowFrame.h"
#include "nsTableRowGroupFrame.h"
#include "nsTableOuterFrame.h"
#include "nsIHTMLContent.h"
#include "BasicTableLayoutStrategy.h"
#include "FixedTableLayoutStrategy.h"
#include "nsIPresContext.h"
#include "nsCSSRendering.h"
#include "nsStyleConsts.h"
#include "nsVoidArray.h"
#include "nsIPtr.h"
#include "nsIView.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLIIDs.h"
#include "nsIReflowCommand.h"
#include "nsLayoutAtoms.h"
#include "nsIDeviceContext.h"
#include "nsIStyleSet.h"
#include "nsIPresShell.h"
#ifdef NS_DEBUG
static PRBool gsDebug = PR_FALSE;
//static PRBool gsDebugCLD = PR_FALSE;
static PRBool gsDebugNT = PR_FALSE;
static PRBool gsDebugIR = PR_FALSE;
#else
static const PRBool gsDebug = PR_FALSE;
//static const PRBool gsDebugCLD = PR_FALSE;
static const PRBool gsDebugNT = PR_FALSE;
static const PRBool gsDebugIR = PR_FALSE;
#endif
#ifndef max
#define max(x, y) ((x) > (y) ? (x) : (y))
#endif
NS_DEF_PTR(nsIStyleContext);
NS_DEF_PTR(nsIContent);
static NS_DEFINE_IID(kITableRowGroupFrameIID, NS_ITABLEROWGROUPFRAME_IID);
static const PRInt32 kColumnWidthIncrement=100;
/* ----------- CellData ---------- */
/* CellData is the info stored in the cell map */
CellData::CellData()
{
mCell = nsnull;
mRealCell = nsnull;
mOverlap = nsnull;
}
CellData::~CellData()
{}
/* ----------- InnerTableReflowState ---------- */
struct InnerTableReflowState {
// Our reflow state
const nsHTMLReflowState& reflowState;
// The body's available size (computed from the body's parent)
nsSize availSize;
// Flags for whether the max size is unconstrained
PRBool unconstrainedWidth;
PRBool unconstrainedHeight;
// Running y-offset
nscoord y;
// Pointer to the footer in the table
nsIFrame* footerFrame;
// The first body section row group frame, i.e. not a header or footer
nsIFrame* firstBodySection;
InnerTableReflowState(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState,
const nsMargin& aBorderPadding)
: reflowState(aReflowState)
{
y=0; // border/padding???
unconstrainedWidth = PRBool(aReflowState.availableWidth == NS_UNCONSTRAINEDSIZE);
availSize.width = aReflowState.availableWidth;
if (!unconstrainedWidth) {
availSize.width -= aBorderPadding.left + aBorderPadding.right;
}
unconstrainedHeight = PRBool(aReflowState.availableHeight == NS_UNCONSTRAINEDSIZE);
availSize.height = aReflowState.availableHeight;
if (!unconstrainedHeight) {
availSize.height -= aBorderPadding.top + aBorderPadding.bottom;
}
footerFrame = nsnull;
firstBodySection = nsnull;
}
};
/* ----------- ColumnInfoCache ---------- */
static const PRInt32 NUM_COL_WIDTH_TYPES=4;
class ColumnInfoCache
{
public:
ColumnInfoCache(PRInt32 aNumColumns);
~ColumnInfoCache();
void AddColumnInfo(const nsStyleUnit aType,
PRInt32 aColumnIndex);
void GetColumnsByType(const nsStyleUnit aType,
PRInt32& aOutNumColumns,
PRInt32 *& aOutColumnIndexes);
enum ColWidthType {
eColWidthType_Auto = 0, // width based on contents
eColWidthType_Percent = 1, // (float) 1.0 == 100%
eColWidthType_Coord = 2, // (nscoord) value is twips
eColWidthType_Proportional = 3 // (int) value has proportional meaning
};
private:
PRInt32 mColCounts [4];
PRInt32 *mColIndexes[4];
PRInt32 mNumColumns;
};
ColumnInfoCache::ColumnInfoCache(PRInt32 aNumColumns)
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("CIC constructor: aNumColumns %d\n", aNumColumns);
mNumColumns = aNumColumns;
for (PRInt32 i=0; i<NUM_COL_WIDTH_TYPES; i++)
{
mColCounts[i] = 0;
mColIndexes[i] = nsnull;
}
}
ColumnInfoCache::~ColumnInfoCache()
{
for (PRInt32 i=0; i<NUM_COL_WIDTH_TYPES; i++)
{
if (nsnull!=mColIndexes[i])
{
delete [] mColIndexes[i];
}
}
}
void ColumnInfoCache::AddColumnInfo(const nsStyleUnit aType,
PRInt32 aColumnIndex)
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("CIC AddColumnInfo: adding col index %d of type %d\n", aColumnIndex, aType);
// a table may have more COLs than actual columns, so we guard against that here
if (aColumnIndex<mNumColumns)
{
switch (aType)
{
case eStyleUnit_Auto:
if (nsnull==mColIndexes[eColWidthType_Auto])
mColIndexes[eColWidthType_Auto] = new PRInt32[mNumColumns]; // TODO : be much more efficient
mColIndexes[eColWidthType_Auto][mColCounts[eColWidthType_Auto]] = aColumnIndex;
mColCounts[eColWidthType_Auto]++;
break;
case eStyleUnit_Percent:
if (nsnull==mColIndexes[eColWidthType_Percent])
mColIndexes[eColWidthType_Percent] = new PRInt32[mNumColumns]; // TODO : be much more efficient
mColIndexes[eColWidthType_Percent][mColCounts[eColWidthType_Percent]] = aColumnIndex;
mColCounts[eColWidthType_Percent]++;
break;
case eStyleUnit_Coord:
if (nsnull==mColIndexes[eColWidthType_Coord])
mColIndexes[eColWidthType_Coord] = new PRInt32[mNumColumns]; // TODO : be much more efficient
mColIndexes[eColWidthType_Coord][mColCounts[eColWidthType_Coord]] = aColumnIndex;
mColCounts[eColWidthType_Coord]++;
break;
case eStyleUnit_Proportional:
if (nsnull==mColIndexes[eColWidthType_Proportional])
mColIndexes[eColWidthType_Proportional] = new PRInt32[mNumColumns]; // TODO : be much more efficient
mColIndexes[eColWidthType_Proportional][mColCounts[eColWidthType_Proportional]] = aColumnIndex;
mColCounts[eColWidthType_Proportional]++;
break;
default:
break;
}
}
}
void ColumnInfoCache::GetColumnsByType(const nsStyleUnit aType,
PRInt32& aOutNumColumns,
PRInt32 *& aOutColumnIndexes)
{
// initialize out-params
aOutNumColumns=0;
aOutColumnIndexes=nsnull;
// fill out params with column info based on aType
switch (aType)
{
case eStyleUnit_Auto:
aOutNumColumns = mColCounts[eColWidthType_Auto];
aOutColumnIndexes = mColIndexes[eColWidthType_Auto];
break;
case eStyleUnit_Percent:
aOutNumColumns = mColCounts[eColWidthType_Percent];
aOutColumnIndexes = mColIndexes[eColWidthType_Percent];
break;
case eStyleUnit_Coord:
aOutNumColumns = mColCounts[eColWidthType_Coord];
aOutColumnIndexes = mColIndexes[eColWidthType_Coord];
break;
case eStyleUnit_Proportional:
aOutNumColumns = mColCounts[eColWidthType_Proportional];
aOutColumnIndexes = mColIndexes[eColWidthType_Proportional];
break;
default:
break;
}
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("CIC GetColumnsByType: found %d of type %d\n", aOutNumColumns, aType);
}
NS_IMETHODIMP
nsTableFrame::GetFrameType(nsIAtom** aType) const
{
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
*aType = nsLayoutAtoms::tableFrame;
NS_ADDREF(*aType);
return NS_OK;
}
/* --------------------- nsTableFrame -------------------- */
nsTableFrame::nsTableFrame()
: nsHTMLContainerFrame(),
mColumnWidthsValid(PR_FALSE),
mFirstPassValid(PR_FALSE),
mColumnCacheValid(PR_FALSE),
mCellMapValid(PR_TRUE),
mIsInvariantWidth(PR_FALSE),
mHasScrollableRowGroup(PR_FALSE),
mCellMap(nsnull),
mColCache(nsnull),
mTableLayoutStrategy(nsnull)
{
mEffectiveColCount = -1; // -1 means uninitialized
mColumnWidthsSet=PR_FALSE;
mColumnWidthsLength = kColumnWidthIncrement;
mColumnWidths = new PRInt32[mColumnWidthsLength];
nsCRT::memset (mColumnWidths, 0, mColumnWidthsLength*sizeof(PRInt32));
mCellMap = new nsCellMap(0, 0);
mBorderEdges.mOutsideEdge=PR_TRUE;
}
NS_IMETHODIMP
nsTableFrame::Init(nsIPresContext& aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow)
{
nsresult rv;
// Let the base class do its processing
rv = nsHTMLContainerFrame::Init(aPresContext, aContent, aParent, aContext,
aPrevInFlow);
if (aPrevInFlow) {
// set my width, because all frames in a table flow are the same width and
// code in nsTableOuterFrame depends on this being set
nsSize size;
aPrevInFlow->GetSize(size);
mRect.width = size.width;
}
return rv;
}
nsTableFrame::~nsTableFrame()
{
if (nsnull!=mCellMap) {
delete mCellMap;
mCellMap = nsnull;
}
if (nsnull!=mColumnWidths) {
delete [] mColumnWidths;
mColumnWidths = nsnull;
}
if (nsnull!=mTableLayoutStrategy) {
delete mTableLayoutStrategy;
mTableLayoutStrategy = nsnull;
}
if (nsnull!=mColCache) {
delete mColCache;
mColCache = nsnull;
}
}
NS_IMETHODIMP
nsTableFrame::DeleteFrame(nsIPresContext& aPresContext)
{
mColGroups.DeleteFrames(aPresContext);
return nsHTMLContainerFrame::DeleteFrame(aPresContext);
}
NS_IMETHODIMP
nsTableFrame::SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
nsresult rv=NS_OK;
// I know now that I have all my children, so build the cell map
nsIFrame *childFrame = aChildList;
nsIFrame *prevMainChild = nsnull;
nsIFrame *prevColGroupChild = nsnull;
for ( ; nsnull!=childFrame; )
{
const nsStyleDisplay *childDisplay;
childFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)childDisplay);
if (PR_TRUE==IsRowGroup(childDisplay->mDisplay))
{
if (mFrames.IsEmpty())
mFrames.SetFrames(childFrame);
else
prevMainChild->SetNextSibling(childFrame);
// If we have a prev-in-flow, then we're a table that has been split and
// so don't treat this like an append
if (!mPrevInFlow) {
rv = DidAppendRowGroup(GetRowGroupFrameFor(childFrame, childDisplay));
}
prevMainChild = childFrame;
}
else if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == childDisplay->mDisplay)
{
if (mColGroups.IsEmpty())
mColGroups.SetFrames(childFrame);
else
prevColGroupChild->SetNextSibling(childFrame);
prevColGroupChild = childFrame;
}
else
{ // unknown frames go on the main list for now
if (mFrames.IsEmpty())
mFrames.SetFrames(childFrame);
else
prevMainChild->SetNextSibling(childFrame);
prevMainChild = childFrame;
}
nsIFrame *prevChild = childFrame;
childFrame->GetNextSibling(&childFrame);
prevChild->SetNextSibling(nsnull);
}
if (nsnull!=prevMainChild)
prevMainChild->SetNextSibling(nsnull);
if (nsnull!=prevColGroupChild)
prevColGroupChild->SetNextSibling(nsnull);
if (NS_SUCCEEDED(rv))
EnsureColumns(aPresContext);
return rv;
}
NS_IMETHODIMP nsTableFrame::DidAppendRowGroup(nsTableRowGroupFrame *aRowGroupFrame)
{
nsresult rv=NS_OK;
nsIFrame *nextRow=nsnull;
aRowGroupFrame->FirstChild(nsnull, &nextRow);
for ( ; nsnull!=nextRow; nextRow->GetNextSibling(&nextRow))
{
const nsStyleDisplay *rowDisplay;
nextRow->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)rowDisplay);
if (NS_STYLE_DISPLAY_TABLE_ROW==rowDisplay->mDisplay) {
rv = ((nsTableRowFrame *)nextRow)->InitChildren();
if (NS_FAILED(rv)) {
return rv;
}
}
else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP==rowDisplay->mDisplay) {
rv = DidAppendRowGroup((nsTableRowGroupFrame*)nextRow);
if (NS_FAILED(rv)) {
return rv;
}
}
}
return rv;
}
/* ****** CellMap methods ******* */
/* counts columns in column groups */
PRInt32 nsTableFrame::GetSpecifiedColumnCount ()
{
mColCount=0;
nsIFrame * childFrame = mColGroups.FirstChild();
while (nsnull!=childFrame)
{
mColCount += ((nsTableColGroupFrame *)childFrame)->GetColumnCount();
childFrame->GetNextSibling(&childFrame);
}
if (PR_TRUE==gsDebug) printf("TIF GetSpecifiedColumnCount: returning %d\n", mColCount);
return mColCount;
}
PRInt32 nsTableFrame::GetRowCount () const
{
PRInt32 rowCount = 0;
nsCellMap *cellMap = GetCellMap();
NS_ASSERTION(nsnull!=cellMap, "GetRowCount null cellmap");
if (nsnull!=cellMap)
rowCount = cellMap->GetRowCount();
return rowCount;
}
/* return the effective col count */
PRInt32 nsTableFrame::GetColCount ()
{
nsCellMap *cellMap = GetCellMap();
NS_ASSERTION(nsnull!=cellMap, "GetColCount null cellmap");
if (nsnull!=cellMap)
{
//if (-1==mEffectiveColCount)
SetEffectiveColCount();
}
return mEffectiveColCount;
}
void nsTableFrame::SetEffectiveColCount()
{
nsCellMap *cellMap = GetCellMap();
NS_ASSERTION(nsnull!=cellMap, "SetEffectiveColCount null cellmap");
if (nsnull!=cellMap)
{
PRInt32 colCount = cellMap->GetColCount();
mEffectiveColCount = colCount;
PRInt32 rowCount = cellMap->GetRowCount();
for (PRInt32 colIndex=colCount-1; colIndex>0; colIndex--)
{
PRBool deleteCol=PR_TRUE;
for (PRInt32 rowIndex=0; rowIndex<rowCount; rowIndex++)
{
CellData *cell = cellMap->GetCellAt(rowIndex, colIndex);
if ((nsnull!=cell) && (cell->mCell != nsnull))
{ // found a real cell, so we're done
deleteCol = PR_FALSE;
break;
}
}
if (PR_TRUE==deleteCol)
mEffectiveColCount--;
else
break;
}
}
if (PR_TRUE==gsDebug) printf("TIF SetEffectiveColumnCount: returning %d\n", mEffectiveColCount);
}
nsTableColFrame * nsTableFrame::GetColFrame(PRInt32 aColIndex)
{
nsTableColFrame *result = nsnull;
nsCellMap *cellMap = GetCellMap();
if (nsnull!=cellMap)
{
result = cellMap->GetColumnFrame(aColIndex);
}
return result;
}
// can return nsnull
nsTableCellFrame * nsTableFrame::GetCellFrameAt(PRInt32 aRowIndex, PRInt32 aColIndex)
{
nsTableCellFrame *result = nsnull;
nsCellMap *cellMap = GetCellMap();
if (nsnull!=cellMap)
{
CellData * cellData = cellMap->GetCellAt(aRowIndex, aColIndex);
if (nsnull!=cellData)
{
result = cellData->mCell;
if (nsnull==result)
result = cellData->mRealCell->mCell;
}
}
return result;
}
/** returns PR_TRUE if the row at aRowIndex has any cells that are the result
* of a row-spanning cell.
* @see nsCellMap::RowIsSpannedInto
*/
PRBool nsTableFrame::RowIsSpannedInto(PRInt32 aRowIndex)
{
NS_PRECONDITION (0<=aRowIndex && aRowIndex<GetRowCount(), "bad row index arg");
PRBool result = PR_FALSE;
nsCellMap * cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "bad call, cellMap not yet allocated.");
if (nsnull!=cellMap)
{
result = cellMap->RowIsSpannedInto(aRowIndex);
}
return result;
}
/** returns PR_TRUE if the row at aRowIndex has any cells that have a rowspan>1
* @see nsCellMap::RowHasSpanningCells
*/
PRBool nsTableFrame::RowHasSpanningCells(PRInt32 aRowIndex)
{
NS_PRECONDITION (0<=aRowIndex && aRowIndex<GetRowCount(), "bad row index arg");
PRBool result = PR_FALSE;
nsCellMap * cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "bad call, cellMap not yet allocated.");
if (nsnull!=cellMap)
{
result = cellMap->RowHasSpanningCells(aRowIndex);
}
return result;
}
/** returns PR_TRUE if the col at aColIndex has any cells that are the result
* of a col-spanning cell.
* @see nsCellMap::ColIsSpannedInto
*/
PRBool nsTableFrame::ColIsSpannedInto(PRInt32 aColIndex)
{
PRBool result = PR_FALSE;
nsCellMap * cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "bad call, cellMap not yet allocated.");
if (nsnull!=cellMap)
{
result = cellMap->ColIsSpannedInto(aColIndex);
}
return result;
}
/** returns PR_TRUE if the row at aColIndex has any cells that have a colspan>1
* @see nsCellMap::ColHasSpanningCells
*/
PRBool nsTableFrame::ColHasSpanningCells(PRInt32 aColIndex)
{
PRBool result = PR_FALSE;
nsCellMap * cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "bad call, cellMap not yet allocated.");
if (nsnull!=cellMap)
{
result = cellMap->ColHasSpanningCells(aColIndex);
}
return result;
}
// return the number of rows spanned by aCell starting at aRowIndex
// note that this is different from just the rowspan of aCell
// (that would be GetEffectiveRowSpan (indexOfRowThatContains_aCell, aCell)
//
// XXX This code should be in the table row group frame instead, and it
// should clip rows spans so they don't extend past a row group rather than
// clip to the table itself. Before that can happen the code that builds the
// cell map needs to take row groups into account
PRInt32 nsTableFrame::GetEffectiveRowSpan (PRInt32 aRowIndex, nsTableCellFrame *aCell)
{
NS_PRECONDITION (nsnull!=aCell, "bad cell arg");
NS_PRECONDITION (0<=aRowIndex && aRowIndex<GetRowCount(), "bad row index arg");
if (!(0<=aRowIndex && aRowIndex<GetRowCount()))
return 1;
// XXX I don't think this is correct...
#if 0
PRInt32 rowSpan = aCell->GetRowSpan();
PRInt32 rowCount = GetRowCount();
if (rowCount < (aRowIndex + rowSpan))
return (rowCount - aRowIndex);
return rowSpan;
#else
PRInt32 rowSpan = aCell->GetRowSpan();
PRInt32 rowCount = GetRowCount();
PRInt32 startRow;
aCell->GetRowIndex(startRow);
// Clip the row span so it doesn't extend past the bottom of the table
if ((startRow + rowSpan) > rowCount) {
rowSpan = rowCount - startRow;
}
// Check that aRowIndex is in the range startRow..startRow+rowSpan-1
PRInt32 lastRow = startRow + rowSpan - 1;
if ((aRowIndex < startRow) || (aRowIndex > lastRow)) {
return 0; // cell doesn't span any rows starting at aRowIndex
} else {
return lastRow - aRowIndex + 1;
}
#endif
}
// return the number of cols spanned by aCell starting at aColIndex
// note that this is different from just the colspan of aCell
// (that would be GetEffectiveColSpan (indexOfColThatContains_aCell, aCell)
//
// XXX Should be moved to colgroup, as GetEffectiveRowSpan should be moved to rowgroup?
PRInt32 nsTableFrame::GetEffectiveColSpan (PRInt32 aColIndex, nsTableCellFrame *aCell)
{
NS_PRECONDITION (nsnull!=aCell, "bad cell arg");
nsCellMap *cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "bad call, cellMap not yet allocated.");
PRInt32 colCount = GetColCount();
NS_PRECONDITION (0<=aColIndex && aColIndex<colCount, "bad col index arg");
PRInt32 result;
/* XXX: it kind of makes sense to ignore colspans when there's only one row, but it doesn't quite work that way :(
it would be good to find out why
*/
/*
if (cellMap->GetRowCount()==1)
return 1;
*/
PRInt32 colSpan = aCell->GetColSpan();
if (colCount < (aColIndex + colSpan))
result = colCount - aColIndex;
else
{
result = colSpan;
// check for case where all cells in a column have a colspan
PRInt32 initialColIndex;
aCell->GetColIndex(initialColIndex);
PRInt32 minColSpanForCol = cellMap->GetMinColSpan(initialColIndex);
result -= (minColSpanForCol - 1); // minColSpanForCol is always at least 1
// and we want to treat default as 0 (no effect)
}
#ifdef NS_DEBUG
if (0>=result)
{
printf("ERROR!\n");
DumpCellMap();
PRInt32 initialColIndex;
aCell->GetColIndex(initialColIndex);
printf("aColIndex=%d, cell->colIndex=%d\n", aColIndex, initialColIndex);
printf("aCell->colSpan=%d\n", aCell->GetColSpan());
printf("colCount=%d\n", mCellMap->GetColCount());
}
#endif
NS_ASSERTION(0<result, "bad effective col span");
return result;
}
PRInt32 nsTableFrame::GetEffectiveCOLSAttribute()
{
nsCellMap *cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "null cellMap.");
PRInt32 result;
const nsStyleTable *tableStyle=nsnull;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
result = tableStyle->mCols;
PRInt32 numCols = GetColCount();
if (result>numCols)
result = numCols;
return result;
}
/** sum the columns represented by all nsTableColGroup objects
* if the cell map says there are more columns than this,
* add extra implicit columns to the content tree.
*/
void nsTableFrame::EnsureColumns(nsIPresContext& aPresContext)
{
if (PR_TRUE==gsDebug) printf("TIF EnsureColumns\n");
NS_PRECONDITION(nsnull!=mCellMap, "bad state: null cellmap");
// XXX sec should only be called on firstInFlow
SetMinColSpanForTable();
if (nsnull==mCellMap)
return; // no info yet, so nothing useful to do
// make sure we've accounted for the COLS attribute
AdjustColumnsForCOLSAttribute();
// count the number of column frames we already have
PRInt32 actualColumns = 0;
nsTableColGroupFrame *lastColGroupFrame = nsnull;
nsIFrame* childFrame = mColGroups.FirstChild();
while (nsnull!=childFrame)
{
((nsTableColGroupFrame*)childFrame)->SetStartColumnIndex(actualColumns);
PRInt32 numCols = ((nsTableColGroupFrame*)childFrame)->GetColumnCount();
actualColumns += numCols;
lastColGroupFrame = (nsTableColGroupFrame *)childFrame;
if (PR_TRUE==gsDebug) printf("EC: found a col group %p\n", lastColGroupFrame);
childFrame->GetNextSibling(&childFrame);
}
// if we have fewer column frames than we need, create some implicit column frames
PRInt32 colCount = mCellMap->GetColCount();
if (PR_TRUE==gsDebug) printf("EC: actual = %d, colCount=%d\n", actualColumns, colCount);
if (actualColumns < colCount)
{
if (PR_TRUE==gsDebug) printf("TIF EnsureColumns: actual %d < colCount %d\n", actualColumns, colCount);
nsIContent *lastColGroupElement = nsnull;
if (nsnull==lastColGroupFrame)
{ // there are no col groups, so create an implicit colgroup frame
if (PR_TRUE==gsDebug) printf("EnsureColumns:creating colgroup frame\n");
// Resolve style for the colgroup frame
// first, need to get the nearest containing content object
GetContent(&lastColGroupElement); // ADDREF a: lastColGroupElement++ (either here or in the loop below)
nsIFrame *parentFrame;
GetParent(&parentFrame);
while (nsnull==lastColGroupElement)
{
parentFrame->GetContent(&lastColGroupElement);
if (nsnull==lastColGroupElement)
parentFrame->GetParent(&parentFrame);
}
// now we have a ref-counted "lastColGroupElement" content object
nsIStyleContext* colGroupStyleContext;
aPresContext.ResolvePseudoStyleContextFor (lastColGroupElement,
nsHTMLAtoms::tableColGroupPseudo,
mStyleContext,
PR_FALSE,
&colGroupStyleContext); // colGroupStyleContext: REFCNT++
// Create a col group frame
nsIFrame* newFrame;
NS_NewTableColGroupFrame(&newFrame);
newFrame->Init(aPresContext, lastColGroupElement, this, colGroupStyleContext,
nsnull);
lastColGroupFrame = (nsTableColGroupFrame*)newFrame;
NS_RELEASE(colGroupStyleContext); // kidStyleContenxt: REFCNT--
// hook lastColGroupFrame into child list
mColGroups.SetFrames(lastColGroupFrame);
}
else
{
lastColGroupFrame->GetContent(&lastColGroupElement); // ADDREF b: lastColGroupElement++
}
// XXX It would be better to do this in the style code while constructing
// the table's frames. But we don't know how many columns we have at that point.
nsAutoString colTag;
nsHTMLAtoms::col->ToString(colTag);
PRInt32 excessColumns = colCount - actualColumns;
nsIFrame* firstNewColFrame = nsnull;
nsIFrame* lastNewColFrame = nsnull;
nsIStyleContextPtr lastColGroupStyle;
lastColGroupFrame->GetStyleContext(lastColGroupStyle.AssignPtr());
for ( ; excessColumns > 0; excessColumns--)
{
// Create a new col frame
nsIFrame* colFrame;
// note we pass in PR_TRUE here to force unique style contexts.
nsIStyleContext* colStyleContext;
aPresContext.ResolvePseudoStyleContextFor (lastColGroupElement,
nsHTMLAtoms::tableColPseudo,
lastColGroupStyle,
PR_TRUE,
&colStyleContext); // colStyleContext: REFCNT++
NS_NewTableColFrame(&colFrame);
colFrame->Init(aPresContext, lastColGroupElement, lastColGroupFrame,
colStyleContext, nsnull);
NS_RELEASE(colStyleContext);
colFrame->SetInitialChildList(aPresContext, nsnull, nsnull);
// Add it to our list
if (nsnull == lastNewColFrame) {
firstNewColFrame = colFrame;
} else {
lastNewColFrame->SetNextSibling(colFrame);
}
lastNewColFrame = colFrame;
}
lastColGroupFrame->SetInitialChildList(aPresContext, nsnull, firstNewColFrame);
NS_RELEASE(lastColGroupElement); // ADDREF: lastColGroupElement--
}
}
void nsTableFrame::AddColumnFrame (nsTableColFrame *aColFrame)
{
if (gsDebug==PR_TRUE) printf("TIF: AddColumnFrame %p\n", aColFrame);
nsCellMap *cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "null cellMap.");
if (nsnull!=cellMap)
{
if (gsDebug) printf("TIF AddColumnFrame: adding column frame %p\n", aColFrame);
cellMap->AppendColumnFrame(aColFrame);
}
}
/** return the index of the next row that is not yet assigned */
PRInt32 nsTableFrame::GetNextAvailRowIndex() const
{
PRInt32 result=0;
nsCellMap *cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "null cellMap.");
if (nsnull!=cellMap)
{
result = cellMap->GetRowCount(); // the next index is the current count
cellMap->GrowToRow(result+1); // expand the cell map to include this new row
}
return result;
}
/** return the index of the next column in aRowIndex that does not have a cell assigned to it */
PRInt32 nsTableFrame::GetNextAvailColIndex(PRInt32 aRowIndex, PRInt32 aColIndex) const
{
PRInt32 result=0;
nsCellMap *cellMap = GetCellMap();
NS_PRECONDITION (nsnull!=cellMap, "null cellMap.");
if (nsnull!=cellMap)
result = cellMap->GetNextAvailColIndex(aRowIndex, aColIndex);
if (gsDebug==PR_TRUE) printf("TIF: GetNextAvailColIndex returning %d\n", result);
return result;
}
/** Get the cell map for this table frame. It is not always mCellMap.
* Only the firstInFlow has a legit cell map
*/
nsCellMap * nsTableFrame::GetCellMap() const
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
if (this!=firstInFlow)
{
return firstInFlow->GetCellMap();
}
return mCellMap;
}
void nsTableFrame::SetMinColSpanForTable()
{ // XXX: must be called ONLY on first-in-flow
// set the minColSpan for each column
PRInt32 rowCount = mCellMap->GetRowCount();
PRInt32 colCount = mCellMap->GetColCount();
for (PRInt32 colIndex=0; colIndex<colCount; colIndex++)
{
PRInt32 minColSpan=0;
for (PRInt32 rowIndex=0; rowIndex<rowCount; rowIndex++)
{
nsTableCellFrame *cellFrame = mCellMap->GetCellFrameAt(rowIndex, colIndex);
if (nsnull!=cellFrame)
{
PRInt32 colSpan = cellFrame->GetColSpan();
if (0==minColSpan)
minColSpan = colSpan;
else
minColSpan = PR_MIN(minColSpan, colSpan);
}
}
if (1<minColSpan)
{
mCellMap->SetMinColSpan(colIndex, minColSpan);
#ifdef NS_DEBUG
if (gsDebug==PR_TRUE)
{
printf("minColSpan for col %d set to %d\n", colIndex, minColSpan);
DumpCellMap();
}
#endif
}
}
}
void nsTableFrame::AddCellToTable (nsTableRowFrame *aRowFrame,
nsTableCellFrame *aCellFrame,
PRBool aAddRow)
{
NS_ASSERTION(nsnull!=aRowFrame, "bad aRowFrame arg");
NS_ASSERTION(nsnull!=aCellFrame, "bad aCellFrame arg");
NS_PRECONDITION(nsnull!=mCellMap, "bad cellMap");
// XXX: must be called only on first-in-flow!
if (gsDebug==PR_TRUE) printf("TIF AddCellToTable: frame %p\n", aCellFrame);
// Make an educated guess as to how many columns we have. It's
// only a guess because we can't know exactly until we have
// processed the last row.
if (0 == mColCount)
mColCount = GetSpecifiedColumnCount();
if (0 == mColCount) // no column parts
{
mColCount = aRowFrame->GetMaxColumns();
}
PRInt32 rowIndex;
// also determine the index of aRowFrame and set it if necessary
if (0==mCellMap->GetRowCount())
{ // this is the first time we've ever been called
rowIndex = 0;
if (gsDebug==PR_TRUE) printf("rowFrame %p set to index %d\n", aRowFrame, rowIndex);
}
else
{
rowIndex = mCellMap->GetRowCount() - 1; // rowIndex is 0-indexed, rowCount is 1-indexed
}
PRInt32 colIndex=0;
while (PR_TRUE)
{
CellData *data = mCellMap->GetCellAt(rowIndex, colIndex);
if (nsnull == data)
{
BuildCellIntoMap(aCellFrame, rowIndex, colIndex);
break;
}
colIndex++;
}
#ifdef NS_DEBUG
if (gsDebug==PR_TRUE)
DumpCellMap ();
#endif
}
static nsresult BuildCellMapForRowGroup(nsIFrame* rowGroupFrame)
{
nsresult rv = NS_OK;
nsIFrame *rowFrame;
rowGroupFrame->FirstChild(nsnull, &rowFrame);
for ( ; nsnull!=rowFrame; rowFrame->GetNextSibling(&rowFrame))
{
const nsStyleDisplay *rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)rowDisplay);
if (NS_STYLE_DISPLAY_TABLE_ROW==rowDisplay->mDisplay)
{
rv = ((nsTableRowFrame *)rowFrame)->InitChildren();
if (NS_FAILED(rv))
return rv;
}
else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP==rowDisplay->mDisplay)
{
BuildCellMapForRowGroup(rowFrame);
}
}
return rv;
}
NS_METHOD nsTableFrame::ReBuildCellMap()
{
if (PR_TRUE==gsDebugIR) printf("TIF: ReBuildCellMap.\n");
nsresult rv=NS_OK;
nsIFrame *rowGroupFrame=mFrames.FirstChild();
for ( ; nsnull!=rowGroupFrame; rowGroupFrame->GetNextSibling(&rowGroupFrame))
{
const nsStyleDisplay *rowGroupDisplay;
rowGroupFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)rowGroupDisplay);
if (PR_TRUE==IsRowGroup(rowGroupDisplay->mDisplay))
{
BuildCellMapForRowGroup(rowGroupFrame);
}
}
mCellMapValid=PR_TRUE;
return rv;
}
#ifdef NS_DEBUG
void nsTableFrame::DumpCellMap ()
{
printf("dumping CellMap:\n");
if (nsnull != mCellMap) {
PRInt32 colIndex;
PRInt32 rowCount = mCellMap->GetRowCount();
PRInt32 colCount = mCellMap->GetColCount();
printf("rowCount=%d, colCount=%d\n", rowCount, colCount);
for (PRInt32 rowIndex = 0; rowIndex < rowCount; rowIndex++) {
printf("row %d : ", rowIndex);
for (colIndex = 0; colIndex < colCount; colIndex++) {
CellData* cd = mCellMap->GetCellAt(rowIndex, colIndex);
if (cd != nsnull) {
if (cd->mCell != nsnull) {
printf("C%d,%d ", rowIndex, colIndex);
} else {
nsTableCellFrame* cell = cd->mRealCell->mCell;
nsTableRowFrame* row;
cell->GetParent((nsIFrame**)&row);
int rr = row->GetRowIndex();
int cc;
cell->GetColIndex(cc);
printf("S%d,%d ", rr, cc);
if (cd->mOverlap != nsnull){
cell = cd->mOverlap->mCell;
nsTableRowFrame* row2;
cell->GetParent((nsIFrame**)&row2);
rr = row2->GetRowIndex();
cell->GetColIndex(cc);
printf("O%d,%c ", rr, cc);
}
}
} else {
printf("---- ");
}
}
PRBool spanners = RowHasSpanningCells(rowIndex);
PRBool spannedInto = RowIsSpannedInto(rowIndex);
printf (" spanners=%s spannedInto=%s\n", spanners?"T":"F", spannedInto?"T":"F");
}
// output info mapping Ci,j to cell address
PRInt32 cellCount = 0;
for (PRInt32 rIndex = 0; rIndex < rowCount; rIndex++) {
for (colIndex = 0; colIndex < colCount; colIndex++) {
CellData* cd = mCellMap->GetCellAt(rIndex, colIndex);
if (cd != nsnull) {
if (cd->mCell != nsnull) {
printf("C%d,%d=%p ", rIndex, colIndex, cd->mCell);
cellCount++;
}
}
if (0 == (cellCount % 4)) {
printf("\n");
}
}
}
// output colspan info
for (colIndex=0; colIndex<colCount; colIndex++) {
PRBool colSpanners = ColHasSpanningCells(colIndex);
PRBool colSpannedInto = ColIsSpannedInto(colIndex);
printf ("%d colSpanners=%s colSpannedInto=%s\n",
colIndex, colSpanners?"T":"F", colSpannedInto?"T":"F");
}
// output col frame info
for (colIndex=0; colIndex<colCount; colIndex++) {
nsTableColFrame *colFrame = mCellMap->GetColumnFrame(colIndex);
printf ("col index %d has frame=%p\n", colIndex, colFrame);
}
} else {
printf ("[nsnull]");
}
}
#endif
void nsTableFrame::BuildCellIntoMap (nsTableCellFrame *aCell, PRInt32 aRowIndex, PRInt32 aColIndex)
{
NS_PRECONDITION (nsnull!=aCell, "bad cell arg");
NS_PRECONDITION (0 <= aColIndex, "bad column index arg");
NS_PRECONDITION (0 <= aRowIndex, "bad row index arg");
// Setup CellMap for this cell
int rowSpan = aCell->GetRowSpan();
int colSpan = aCell->GetColSpan();
if (gsDebug==PR_TRUE) printf("BCIM: rowSpan = %d, colSpan = %d\n", rowSpan, colSpan);
// Grow the mCellMap array if we will end up addressing
// some new columns.
if (mCellMap->GetColCount() < (aColIndex + colSpan))
{
if (gsDebug==PR_TRUE)
printf("BCIM: calling GrowCellMap(%d)\n", aColIndex+colSpan);
GrowCellMap (aColIndex + colSpan);
}
if (mCellMap->GetRowCount() < (aRowIndex+1))
{
printf("BCIM: calling GrowToRow(%d)\n", aRowIndex+1);
mCellMap->GrowToRow(aRowIndex+1);
}
// Setup CellMap for this cell in the table
CellData *data = new CellData ();
data->mCell = aCell;
data->mRealCell = data;
if (gsDebug==PR_TRUE) printf("BCIM: calling mCellMap->SetCellAt(data, %d, %d)\n", aRowIndex, aColIndex);
mCellMap->SetCellAt(data, aRowIndex, aColIndex);
// Create CellData objects for the rows that this cell spans. Set
// their mCell to nsnull and their mRealCell to point to data. If
// there were no column overlaps then we could use the same
// CellData object for each row that we span...
if ((1 < rowSpan) || (1 < colSpan))
{
if (gsDebug==PR_TRUE) printf("BCIM: spans\n");
for (int rowIndex = 0; rowIndex < rowSpan; rowIndex++)
{
if (gsDebug==PR_TRUE) printf("BCIM: rowIndex = %d\n", rowIndex);
int workRow = aRowIndex + rowIndex;
if (gsDebug==PR_TRUE) printf("BCIM: workRow = %d\n", workRow);
for (int colIndex = 0; colIndex < colSpan; colIndex++)
{
if (gsDebug==PR_TRUE) printf("BCIM: colIndex = %d\n", colIndex);
int workCol = aColIndex + colIndex;
if (gsDebug==PR_TRUE) printf("BCIM: workCol = %d\n", workCol);
CellData *testData = mCellMap->GetCellAt(workRow, workCol);
if (nsnull == testData)
{
CellData *spanData = new CellData ();
spanData->mRealCell = data;
if (gsDebug==PR_TRUE) printf("BCIM: null GetCellFrameAt(%d, %d) so setting to spanData\n", workRow, workCol);
mCellMap->SetCellAt(spanData, workRow, workCol);
}
else if ((0 < rowIndex) || (0 < colIndex))
{ // we overlap, replace existing data, it might be shared
if (gsDebug==PR_TRUE) printf("BCIM: overlapping Cell from GetCellFrameAt(%d, %d) so setting to spanData\n", workRow, workCol);
CellData *overlap = new CellData ();
overlap->mCell = testData->mCell;
overlap->mRealCell = testData->mRealCell;
overlap->mOverlap = data;
mCellMap->SetCellAt(overlap, workRow, workCol);
}
}
}
}
}
void nsTableFrame::GrowCellMap (PRInt32 aColCount)
{
if (nsnull!=mCellMap)
{
mCellMap->GrowToCol(aColCount);
mColCount = aColCount;
}
}
/* ***** Column Layout Data methods ***** */
/*
* Lists the column layout data which turns
* around and lists the cell layout data.
* This is for debugging purposes only.
*/
#ifdef NS_DEBUG
void nsTableFrame::ListColumnLayoutData(FILE* out, PRInt32 aIndent)
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
if (this!=firstInFlow)
{
firstInFlow->ListColumnLayoutData(out, aIndent);
return;
}
nsCellMap *cellMap = GetCellMap();
if (nsnull!=cellMap)
{
fprintf(out,"Column Layout Data \n");
PRInt32 numCols = cellMap->GetColCount();
PRInt32 numRows = cellMap->GetRowCount();
for (PRInt32 colIndex = 0; colIndex<numCols; colIndex++)
{
for (PRInt32 indent = aIndent; --indent >= 0; )
fputs(" ", out);
fprintf(out,"Column Data [%d] \n",colIndex);
for (PRInt32 rowIndex = 0; rowIndex < numRows; rowIndex++)
{
nsTableCellFrame *cellFrame = cellMap->GetCellFrameAt(rowIndex, colIndex);
PRInt32 rowIndent;
for (rowIndent = aIndent+2; --rowIndent >= 0; ) fputs(" ", out);
fprintf(out,"Cell Data [%d] \n",rowIndex);
for (rowIndent = aIndent+2; --rowIndent >= 0; ) fputs(" ", out);
nsMargin margin;
cellFrame->GetMargin(margin);
fprintf(out,"Margin -- Top: %d Left: %d Bottom: %d Right: %d \n",
NSTwipsToIntPoints(margin.top),
NSTwipsToIntPoints(margin.left),
NSTwipsToIntPoints(margin.bottom),
NSTwipsToIntPoints(margin.right));
for (rowIndent = aIndent+2; --rowIndent >= 0; ) fputs(" ", out);
}
}
}
}
#endif
/**
* For the TableCell in CellData, add it to the list
*/
void nsTableFrame::AppendLayoutData(nsVoidArray* aList, nsTableCellFrame* aTableCell)
{
if (aTableCell != nsnull)
{
aList->AppendElement((void*)aTableCell);
}
}
void nsTableFrame::SetBorderEdgeLength(PRUint8 aSide, PRInt32 aIndex, nscoord aLength)
{
nsBorderEdge *border = (nsBorderEdge *)(mBorderEdges.mEdges[aSide].ElementAt(aIndex));
border->mLength = aLength;
}
void nsTableFrame::DidComputeHorizontalCollapsingBorders(nsIPresContext& aPresContext,
PRInt32 aStartRowIndex,
PRInt32 aEndRowIndex)
{
// XXX: for now, this only does table edges. May need to do interior edges also? Probably not.
nsCellMap *cellMap = GetCellMap();
PRInt32 lastRowIndex = cellMap->GetRowCount()-1;
PRInt32 lastColIndex = cellMap->GetColCount()-1;
if (0==aStartRowIndex)
{
nsTableCellFrame *cellFrame = mCellMap->GetCellFrameAt(0, 0);
if (nsnull==cellFrame)
{
CellData *cellData = mCellMap->GetCellAt(0, 0);
if (nsnull!=cellData)
cellFrame = cellData->mRealCell->mCell;
}
nsRect rowRect(0,0,0,0);
if (nsnull!=cellFrame)
{
nsIFrame *rowFrame;
cellFrame->GetParent(&rowFrame);
rowFrame->GetRect(rowRect);
nsBorderEdge *leftBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_LEFT].ElementAt(0));
nsBorderEdge *rightBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_RIGHT].ElementAt(0));
nsBorderEdge *topBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_TOP].ElementAt(0));
leftBorder->mLength = rowRect.height + topBorder->mWidth;
topBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_TOP].ElementAt(lastColIndex));
rightBorder->mLength = rowRect.height + topBorder->mWidth;
}
}
if (lastRowIndex<=aEndRowIndex)
{
nsTableCellFrame *cellFrame = mCellMap->GetCellFrameAt(lastRowIndex, 0);
if (nsnull==cellFrame)
{
CellData *cellData = mCellMap->GetCellAt(lastRowIndex, 0);
if (nsnull!=cellData)
cellFrame = cellData->mRealCell->mCell;
}
nsRect rowRect(0,0,0,0);
if (nsnull!=cellFrame)
{
nsIFrame *rowFrame;
cellFrame->GetParent(&rowFrame);
rowFrame->GetRect(rowRect);
nsBorderEdge *leftBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_LEFT].ElementAt(lastRowIndex));
nsBorderEdge *rightBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_RIGHT].ElementAt(lastRowIndex));
nsBorderEdge *bottomBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_BOTTOM].ElementAt(0));
leftBorder->mLength = rowRect.height + bottomBorder->mWidth;
bottomBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_BOTTOM].ElementAt(lastColIndex));
rightBorder->mLength = rowRect.height + bottomBorder->mWidth;
}
}
}
// For every row between aStartRowIndex and aEndRowIndex (-1 == the end of the table),
// walk across every edge and compute the border at that edge.
// We compute each edge only once, arbitrarily choosing to compute right and bottom edges,
// except for exterior cells that share a left or top edge with the table itself.
// Distribute half the computed border to the appropriate adjacent objects
// (always a cell frame or the table frame.) In the case of odd width,
// the object on the right/bottom gets the extra portion
/* compute the top and bottom collapsed borders between aStartRowIndex and aEndRowIndex, inclusive */
void nsTableFrame::ComputeHorizontalCollapsingBorders(nsIPresContext& aPresContext,
PRInt32 aStartRowIndex,
PRInt32 aEndRowIndex)
{
// this method just uses mCellMap, because it can't get called unless nCellMap!=nsnull
PRInt32 colCount = mCellMap->GetColCount();
PRInt32 rowCount = mCellMap->GetRowCount();
if (aStartRowIndex>=rowCount)
{
NS_ASSERTION(PR_FALSE, "aStartRowIndex>=rowCount in ComputeHorizontalCollapsingBorders");
return; // we don't have the requested row yet
}
PRInt32 rowIndex = aStartRowIndex;
for ( ; rowIndex<rowCount && rowIndex <=aEndRowIndex; rowIndex++)
{
PRInt32 colIndex=0;
for ( ; colIndex<colCount; colIndex++)
{
if (0==rowIndex)
{ // table is top neighbor
ComputeTopBorderForEdgeAt(aPresContext, rowIndex, colIndex);
}
ComputeBottomBorderForEdgeAt(aPresContext, rowIndex, colIndex);
}
}
}
/* compute the left and right collapsed borders between aStartRowIndex and aEndRowIndex, inclusive */
void nsTableFrame::ComputeVerticalCollapsingBorders(nsIPresContext& aPresContext,
PRInt32 aStartRowIndex,
PRInt32 aEndRowIndex)
{
nsCellMap *cellMap = GetCellMap();
if (nsnull==cellMap)
return; // no info yet, so nothing useful to do
CacheColFramesInCellMap();
// compute all the collapsing border values for the entire table
// XXX: we have to make this more incremental!
const nsStyleTable *tableStyle=nsnull;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
if (NS_STYLE_BORDER_COLLAPSE!=tableStyle->mBorderCollapse)
return;
PRInt32 colCount = mCellMap->GetColCount();
PRInt32 rowCount = mCellMap->GetRowCount();
PRInt32 endRowIndex = aEndRowIndex;
if (-1==endRowIndex)
endRowIndex=rowCount-1;
if (aStartRowIndex>=rowCount)
{
NS_ASSERTION(PR_FALSE, "aStartRowIndex>=rowCount in ComputeVerticalCollapsingBorders");
return; // we don't have the requested row yet
}
PRInt32 rowIndex = aStartRowIndex;
for ( ; rowIndex<rowCount && rowIndex <=endRowIndex; rowIndex++)
{
PRInt32 colIndex=0;
for ( ; colIndex<colCount; colIndex++)
{
if (0==colIndex)
{ // table is left neighbor
ComputeLeftBorderForEdgeAt(aPresContext, rowIndex, colIndex);
}
ComputeRightBorderForEdgeAt(aPresContext, rowIndex, colIndex);
}
}
}
void nsTableFrame::ComputeLeftBorderForEdgeAt(nsIPresContext& aPresContext,
PRInt32 aRowIndex,
PRInt32 aColIndex)
{
// this method just uses mCellMap, because it can't get called unless nCellMap!=nsnull
PRInt32 numSegments = mBorderEdges.mEdges[NS_SIDE_LEFT].Count();
while (numSegments<=aRowIndex)
{
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_LEFT].AppendElement(borderToAdd);
numSegments++;
}
// "border" is the border segment we are going to set
nsBorderEdge *border = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_LEFT].ElementAt(aRowIndex));
// collect all the incident frames and compute the dominant border
nsVoidArray styles;
// styles are added to the array in the order least dominant -> most dominant
// 1. table
const nsStyleSpacing *spacing;
GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 2. colgroup
nsTableColFrame *colFrame = mCellMap->GetColumnFrame(aColIndex);
nsIFrame *colGroupFrame;
colFrame->GetParent(&colGroupFrame);
colGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 3. col
colFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 4. rowgroup
nsTableCellFrame *cellFrame = mCellMap->GetCellFrameAt(aRowIndex, aColIndex);
if (nsnull==cellFrame)
{
CellData *cellData = mCellMap->GetCellAt(aRowIndex, aColIndex);
if (nsnull!=cellData)
cellFrame = cellData->mRealCell->mCell;
}
nsRect rowRect(0,0,0,0);
if (nsnull!=cellFrame)
{
nsIFrame *rowFrame;
cellFrame->GetParent(&rowFrame);
rowFrame->GetRect(rowRect);
nsIFrame *rowGroupFrame;
rowFrame->GetParent(&rowGroupFrame);
rowGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 5. row
rowFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 6. cell (need to do something smart for rowspanner with row frame)
cellFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
ComputeCollapsedBorderSegment(NS_SIDE_LEFT, &styles, *border, PR_FALSE);
// now give half the computed border to the table segment, and half to the cell
// to avoid rounding errors, we convert up to pixels, divide by 2, and
// we give the odd pixel to the table border
float t2p;
aPresContext.GetTwipsToPixels(&t2p);
float p2t;
aPresContext.GetPixelsToTwips(&p2t);
nscoord widthAsPixels = NSToCoordRound((float)(border->mWidth)*t2p);
nscoord widthToAdd = 0;
border->mWidth = widthAsPixels/2;
if ((border->mWidth*2)!=widthAsPixels)
widthToAdd = NSToCoordCeil(p2t);
border->mWidth *= NSToCoordCeil(p2t);
border->mLength = rowRect.height;
border->mInsideNeighbor = &cellFrame->mBorderEdges;
// we need to factor in the table's horizontal borders.
// but we can't compute that length here because we don't know how thick top and bottom borders are
// see DidComputeHorizontalCollapsingBorders
if (nsnull!=cellFrame)
{
cellFrame->SetBorderEdge(NS_SIDE_LEFT, aRowIndex, aColIndex, border, 0); // set the left edge of the cell frame
}
border->mWidth += widthToAdd;
mBorderEdges.mMaxBorderWidth.left = PR_MAX(border->mWidth, mBorderEdges.mMaxBorderWidth.left);
}
void nsTableFrame::ComputeRightBorderForEdgeAt(nsIPresContext& aPresContext,
PRInt32 aRowIndex,
PRInt32 aColIndex)
{
// this method just uses mCellMap, because it can't get called unless nCellMap!=nsnull
PRInt32 colCount = mCellMap->GetColCount();
PRInt32 numSegments = mBorderEdges.mEdges[NS_SIDE_RIGHT].Count();
while (numSegments<=aRowIndex)
{
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_RIGHT].AppendElement(borderToAdd);
numSegments++;
}
// "border" is the border segment we are going to set
nsBorderEdge border;
// collect all the incident frames and compute the dominant border
nsVoidArray styles;
// styles are added to the array in the order least dominant -> most dominant
// 1. table, only if this cell is in the right-most column and no rowspanning cell is
// to it's right. Otherwise, we remember what cell is the right neighbor
nsTableCellFrame *rightNeighborFrame=nsnull;
if ((colCount-1)!=aColIndex)
{
PRInt32 colIndex = aColIndex+1;
for ( ; colIndex<colCount; colIndex++)
{
CellData *cd = mCellMap->GetCellAt(aRowIndex, colIndex);
if (cd != nsnull)
{ // there's really a cell at (aRowIndex, colIndex)
if (nsnull==cd->mCell)
{ // the cell at (aRowIndex, colIndex) is the result of a span
nsTableCellFrame *cell = cd->mRealCell->mCell;
NS_ASSERTION(nsnull!=cell, "bad cell map state, missing real cell");
PRInt32 realRowIndex;
cell->GetRowIndex (realRowIndex);
if (realRowIndex!=aRowIndex)
{ // the span is caused by a rowspan
rightNeighborFrame = cd->mRealCell->mCell;
break;
}
}
else
{
rightNeighborFrame = cd->mCell;
break;
}
}
}
}
const nsStyleSpacing *spacing;
if (nsnull==rightNeighborFrame)
{ // if rightNeighborFrame is null, our right neighbor is the table
GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
// 2. colgroup //XXX: need to test if we're really on a colgroup border
nsTableColFrame *colFrame = mCellMap->GetColumnFrame(aColIndex);
nsIFrame *colGroupFrame;
colFrame->GetParent(&colGroupFrame);
colGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 3. col
colFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 4. rowgroup
nsTableCellFrame *cellFrame = mCellMap->GetCellFrameAt(aRowIndex, aColIndex);
if (nsnull==cellFrame)
{
CellData *cellData = mCellMap->GetCellAt(aRowIndex, aColIndex);
if (nsnull!=cellData)
cellFrame = cellData->mRealCell->mCell;
}
nsRect rowRect(0,0,0,0);
if (nsnull!=cellFrame)
{
nsIFrame *rowFrame;
cellFrame->GetParent(&rowFrame);
rowFrame->GetRect(rowRect);
nsIFrame *rowGroupFrame;
rowFrame->GetParent(&rowGroupFrame);
if (nsnull==rightNeighborFrame)
{ // if rightNeighborFrame is null, our right neighbor is the table so we include the rowgroup and row
rowGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 5. row
rowFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
// 6. cell (need to do something smart for rowspanner with row frame)
cellFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
// 7. left edge of rightNeighborCell, if there is one
if (nsnull!=rightNeighborFrame)
{
rightNeighborFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
ComputeCollapsedBorderSegment(NS_SIDE_RIGHT, &styles, border, PRBool(nsnull!=rightNeighborFrame));
// now give half the computed border to each of the two neighbors
// (the 2 cells, or the cell and the table)
// to avoid rounding errors, we convert up to pixels, divide by 2, and
// we give the odd pixel to the right cell border
float t2p;
aPresContext.GetTwipsToPixels(&t2p);
float p2t;
aPresContext.GetPixelsToTwips(&p2t);
nscoord widthAsPixels = NSToCoordRound((float)(border.mWidth)*t2p);
nscoord widthToAdd = 0;
border.mWidth = widthAsPixels/2;
if ((border.mWidth*2)!=widthAsPixels)
widthToAdd = NSToCoordCeil(p2t);
border.mWidth *= NSToCoordCeil(p2t);
border.mLength = rowRect.height;
if (nsnull!=cellFrame)
{
cellFrame->SetBorderEdge(NS_SIDE_RIGHT, aRowIndex, aColIndex, &border, widthToAdd);
}
if (nsnull==rightNeighborFrame)
{
nsBorderEdge * tableBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_RIGHT].ElementAt(aRowIndex));
*tableBorder = border;
tableBorder->mInsideNeighbor = &cellFrame->mBorderEdges;
mBorderEdges.mMaxBorderWidth.right = PR_MAX(border.mWidth, mBorderEdges.mMaxBorderWidth.right);
// since the table is our right neightbor, we need to factor in the table's horizontal borders.
// can't compute that length here because we don't know how thick top and bottom borders are
// see DidComputeHorizontalCollapsingBorders
}
else
{
rightNeighborFrame->SetBorderEdge(NS_SIDE_LEFT, aRowIndex, aColIndex, &border, 0);
}
}
void nsTableFrame::ComputeTopBorderForEdgeAt(nsIPresContext& aPresContext,
PRInt32 aRowIndex,
PRInt32 aColIndex)
{
// this method just uses mCellMap, because it can't get called unless nCellMap!=nsnull
PRInt32 numSegments = mBorderEdges.mEdges[NS_SIDE_TOP].Count();
while (numSegments<=aColIndex)
{
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_TOP].AppendElement(borderToAdd);
numSegments++;
}
// "border" is the border segment we are going to set
nsBorderEdge *border = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_TOP].ElementAt(aColIndex));
// collect all the incident frames and compute the dominant border
nsVoidArray styles;
// styles are added to the array in the order least dominant -> most dominant
// 1. table
const nsStyleSpacing *spacing;
GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 2. colgroup
nsTableColFrame *colFrame = mCellMap->GetColumnFrame(aColIndex);
nsIFrame *colGroupFrame;
colFrame->GetParent(&colGroupFrame);
colGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 3. col
colFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 4. rowgroup
nsTableCellFrame *cellFrame = mCellMap->GetCellFrameAt(aRowIndex, aColIndex);
if (nsnull==cellFrame)
{
CellData *cellData = mCellMap->GetCellAt(aRowIndex, aColIndex);
if (nsnull!=cellData)
cellFrame = cellData->mRealCell->mCell;
}
if (nsnull!=cellFrame)
{
nsIFrame *rowFrame;
cellFrame->GetParent(&rowFrame);
nsIFrame *rowGroupFrame;
rowFrame->GetParent(&rowGroupFrame);
rowGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 5. row
rowFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 6. cell (need to do something smart for rowspanner with row frame)
cellFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
ComputeCollapsedBorderSegment(NS_SIDE_TOP, &styles, *border, PR_FALSE);
// now give half the computed border to the table segment, and half to the cell
// to avoid rounding errors, we convert up to pixels, divide by 2, and
// we give the odd pixel to the right border
float t2p;
aPresContext.GetTwipsToPixels(&t2p);
float p2t;
aPresContext.GetPixelsToTwips(&p2t);
nscoord widthAsPixels = NSToCoordRound((float)(border->mWidth)*t2p);
nscoord widthToAdd = 0;
border->mWidth = widthAsPixels/2;
if ((border->mWidth*2)!=widthAsPixels)
widthToAdd = NSToCoordCeil(p2t);
border->mWidth *= NSToCoordCeil(p2t);
border->mLength = GetColumnWidth(aColIndex);
border->mInsideNeighbor = &cellFrame->mBorderEdges;
if (0==aColIndex)
{ // if we're the first column, factor in the thickness of the left table border
nsBorderEdge *leftBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_LEFT].ElementAt(0));
border->mLength += leftBorder->mWidth;
}
if ((mCellMap->GetColCount()-1)==aColIndex)
{ // if we're the last column, factor in the thickness of the right table border
nsBorderEdge *rightBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_RIGHT].ElementAt(0));
border->mLength += rightBorder->mWidth;
}
if (nsnull!=cellFrame)
{
cellFrame->SetBorderEdge(NS_SIDE_TOP, aRowIndex, aColIndex, border, 0); // set the top edge of the cell frame
}
border->mWidth += widthToAdd;
mBorderEdges.mMaxBorderWidth.top = PR_MAX(border->mWidth, mBorderEdges.mMaxBorderWidth.top);
}
void nsTableFrame::ComputeBottomBorderForEdgeAt(nsIPresContext& aPresContext,
PRInt32 aRowIndex,
PRInt32 aColIndex)
{
// this method just uses mCellMap, because it can't get called unless nCellMap!=nsnull
PRInt32 rowCount = mCellMap->GetRowCount();
PRInt32 numSegments = mBorderEdges.mEdges[NS_SIDE_BOTTOM].Count();
while (numSegments<=aColIndex)
{
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges.mEdges[NS_SIDE_BOTTOM].AppendElement(borderToAdd);
numSegments++;
}
// "border" is the border segment we are going to set
nsBorderEdge border;
// collect all the incident frames and compute the dominant border
nsVoidArray styles;
// styles are added to the array in the order least dominant -> most dominant
// 1. table, only if this cell is in the bottom-most row and no colspanning cell is
// beneath it. Otherwise, we remember what cell is the bottom neighbor
nsTableCellFrame *bottomNeighborFrame=nsnull;
if ((rowCount-1)!=aRowIndex)
{
PRInt32 rowIndex = aRowIndex+1;
for ( ; rowIndex<rowCount; rowIndex++)
{
CellData *cd = mCellMap->GetCellAt(rowIndex, aColIndex);
if (cd != nsnull)
{ // there's really a cell at (rowIndex, aColIndex)
if (nsnull==cd->mCell)
{ // the cell at (rowIndex, aColIndex) is the result of a span
nsTableCellFrame *cell = cd->mRealCell->mCell;
NS_ASSERTION(nsnull!=cell, "bad cell map state, missing real cell");
PRInt32 realColIndex;
cell->GetColIndex (realColIndex);
if (realColIndex!=aColIndex)
{ // the span is caused by a colspan
bottomNeighborFrame = cd->mRealCell->mCell;
break;
}
}
else
{
bottomNeighborFrame = cd->mCell;
break;
}
}
}
}
const nsStyleSpacing *spacing;
if (nsnull==bottomNeighborFrame)
{ // if bottomNeighborFrame is null, our bottom neighbor is the table
GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 2. colgroup // XXX: need to deterine if we're on a colgroup boundary
nsTableColFrame *colFrame = mCellMap->GetColumnFrame(aColIndex);
nsIFrame *colGroupFrame;
colFrame->GetParent(&colGroupFrame);
colGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 3. col
colFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
// 4. rowgroup // XXX: use rowgroup only if we're on a table edge
nsTableCellFrame *cellFrame = mCellMap->GetCellFrameAt(aRowIndex, aColIndex);
if (nsnull==cellFrame)
{
CellData *cellData = mCellMap->GetCellAt(aRowIndex, aColIndex);
if (nsnull!=cellData)
cellFrame = cellData->mRealCell->mCell;
}
nsRect rowRect(0,0,0,0);
if (nsnull!=cellFrame)
{
nsIFrame *rowFrame;
cellFrame->GetParent(&rowFrame);
rowFrame->GetRect(rowRect);
nsIFrame *rowGroupFrame;
rowFrame->GetParent(&rowGroupFrame);
rowGroupFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 5. row
rowFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
// 6. cell (need to do something smart for rowspanner with row frame)
cellFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
// 7. top edge of bottomNeighborCell, if there is one
if (nsnull!=bottomNeighborFrame)
{
bottomNeighborFrame->GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)spacing));
styles.AppendElement((void*)spacing);
}
ComputeCollapsedBorderSegment(NS_SIDE_BOTTOM, &styles, border, PRBool(nsnull!=bottomNeighborFrame));
// now give half the computed border to each of the two neighbors
// (the 2 cells, or the cell and the table)
// to avoid rounding errors, we convert up to pixels, divide by 2, and
// we give the odd pixel to the right cell border
float t2p;
aPresContext.GetTwipsToPixels(&t2p);
float p2t;
aPresContext.GetPixelsToTwips(&p2t);
nscoord widthAsPixels = NSToCoordRound((float)(border.mWidth)*t2p);
nscoord widthToAdd = 0;
border.mWidth = widthAsPixels/2;
if ((border.mWidth*2)!=widthAsPixels)
widthToAdd = NSToCoordCeil(p2t);
border.mWidth *= NSToCoordCeil(p2t);
border.mLength = GetColumnWidth(aColIndex);
if (nsnull!=cellFrame)
{
cellFrame->SetBorderEdge(NS_SIDE_BOTTOM, aRowIndex, aColIndex, &border, widthToAdd);
}
if (nsnull==bottomNeighborFrame)
{
nsBorderEdge * tableBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_BOTTOM].ElementAt(aColIndex));
*tableBorder = border;
tableBorder->mInsideNeighbor = &cellFrame->mBorderEdges;
mBorderEdges.mMaxBorderWidth.bottom = PR_MAX(border.mWidth, mBorderEdges.mMaxBorderWidth.bottom);
// since the table is our bottom neightbor, we need to factor in the table's vertical borders.
PRInt32 lastColIndex = mCellMap->GetColCount()-1;
if (0==aColIndex)
{ // if we're the first column, factor in the thickness of the left table border
nsBorderEdge *leftBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_LEFT].ElementAt(rowCount-1));
tableBorder->mLength += leftBorder->mWidth;
}
if (lastColIndex==aColIndex)
{ // if we're the last column, factor in the thickness of the right table border
nsBorderEdge *rightBorder = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_RIGHT].ElementAt(rowCount-1));
tableBorder->mLength += rightBorder->mWidth;
}
}
else
{
bottomNeighborFrame->SetBorderEdge(NS_SIDE_TOP, aRowIndex, aColIndex, &border, 0);
}
}
nscoord nsTableFrame::GetWidthForSide(const nsMargin &aBorder, PRUint8 aSide)
{
if (NS_SIDE_LEFT == aSide) return aBorder.left;
else if (NS_SIDE_RIGHT == aSide) return aBorder.right;
else if (NS_SIDE_TOP == aSide) return aBorder.top;
else return aBorder.bottom;
}
/* Given an Edge, find the opposing edge (top<-->bottom, left<-->right) */
PRUint8 nsTableFrame::GetOpposingEdge(PRUint8 aEdge)
{
PRUint8 result;
switch (aEdge)
{
case NS_SIDE_LEFT:
result = NS_SIDE_RIGHT; break;
case NS_SIDE_RIGHT:
result = NS_SIDE_LEFT; break;
case NS_SIDE_TOP:
result = NS_SIDE_BOTTOM; break;
case NS_SIDE_BOTTOM:
result = NS_SIDE_TOP; break;
default:
result = NS_SIDE_TOP;
}
return result;
}
/* returns BORDER_PRECEDENT_LOWER if aStyle1 is lower precedent that aStyle2
* BORDER_PRECEDENT_HIGHER if aStyle1 is higher precedent that aStyle2
* BORDER_PRECEDENT_EQUAL if aStyle1 and aStyle2 have the same precedence
* (note, this is not necessarily the same as saying aStyle1==aStyle2)
* this is a method on nsTableFrame because other objects might define their
* own border precedence rules.
*/
PRUint8 nsTableFrame::CompareBorderStyles(PRUint8 aStyle1, PRUint8 aStyle2)
{
PRUint8 result=BORDER_PRECEDENT_HIGHER; // if we get illegal types for table borders, HIGHER is the default
if (aStyle1==aStyle2)
result = BORDER_PRECEDENT_EQUAL;
else if (NS_STYLE_BORDER_STYLE_HIDDEN==aStyle1)
result = BORDER_PRECEDENT_HIGHER;
else if (NS_STYLE_BORDER_STYLE_NONE==aStyle1)
result = BORDER_PRECEDENT_LOWER;
else if (NS_STYLE_BORDER_STYLE_NONE==aStyle2)
result = BORDER_PRECEDENT_HIGHER;
else if (NS_STYLE_BORDER_STYLE_HIDDEN==aStyle2)
result = BORDER_PRECEDENT_LOWER;
else
{
switch (aStyle1)
{
case NS_STYLE_BORDER_STYLE_BG_INSET:
result = BORDER_PRECEDENT_LOWER;
break;
case NS_STYLE_BORDER_STYLE_GROOVE:
if (NS_STYLE_BORDER_STYLE_BG_INSET==aStyle2)
result = BORDER_PRECEDENT_HIGHER;
else
result = BORDER_PRECEDENT_LOWER;
break;
case NS_STYLE_BORDER_STYLE_BG_OUTSET:
if (NS_STYLE_BORDER_STYLE_BG_INSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_GROOVE==aStyle2)
result = BORDER_PRECEDENT_HIGHER;
else
result = BORDER_PRECEDENT_LOWER;
break;
case NS_STYLE_BORDER_STYLE_RIDGE:
if (NS_STYLE_BORDER_STYLE_BG_INSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_GROOVE==aStyle2 ||
NS_STYLE_BORDER_STYLE_BG_OUTSET==aStyle2)
result = BORDER_PRECEDENT_HIGHER;
else
result = BORDER_PRECEDENT_LOWER;
break;
case NS_STYLE_BORDER_STYLE_DOTTED:
if (NS_STYLE_BORDER_STYLE_BG_INSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_GROOVE==aStyle2 ||
NS_STYLE_BORDER_STYLE_BG_OUTSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_RIDGE==aStyle2)
result = BORDER_PRECEDENT_HIGHER;
else
result = BORDER_PRECEDENT_LOWER;
break;
case NS_STYLE_BORDER_STYLE_DASHED:
if (NS_STYLE_BORDER_STYLE_BG_INSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_GROOVE==aStyle2 ||
NS_STYLE_BORDER_STYLE_BG_OUTSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_RIDGE==aStyle2 ||
NS_STYLE_BORDER_STYLE_DOTTED==aStyle2)
result = BORDER_PRECEDENT_HIGHER;
else
result = BORDER_PRECEDENT_LOWER;
break;
case NS_STYLE_BORDER_STYLE_SOLID:
if (NS_STYLE_BORDER_STYLE_BG_INSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_GROOVE==aStyle2 ||
NS_STYLE_BORDER_STYLE_BG_OUTSET==aStyle2 ||
NS_STYLE_BORDER_STYLE_RIDGE==aStyle2 ||
NS_STYLE_BORDER_STYLE_DOTTED==aStyle2 ||
NS_STYLE_BORDER_STYLE_DASHED==aStyle2)
result = BORDER_PRECEDENT_HIGHER;
else
result = BORDER_PRECEDENT_LOWER;
break;
case NS_STYLE_BORDER_STYLE_DOUBLE:
result = BORDER_PRECEDENT_LOWER;
break;
}
}
return result;
}
/*
This method is the CSS2 border conflict resolution algorithm
The spec says to resolve conflicts in this order:
1. any border with the style HIDDEN wins
2. the widest border with a style that is not NONE wins
3. the border styles are ranked in this order, highest to lowest precedence:
double, solid, dashed, dotted, ridge, outset, groove, inset
4. borders that are of equal width and style (differ only in color) have this precedence:
cell, row, rowgroup, col, colgroup, table
5. if all border styles are NONE, then that's the computed border style.
This method assumes that the styles were added to aStyles in the reverse precedence order
of their frame type, so that styles that come later in the list win over style
earlier in the list if the tie-breaker gets down to #4.
This method sets the out-param aBorder with the resolved border attributes
*/
void nsTableFrame::ComputeCollapsedBorderSegment(PRUint8 aSide,
nsVoidArray *aStyles,
nsBorderEdge &aBorder,
PRBool aFlipLastSide)
{
if (nsnull!=aStyles)
{
PRInt32 styleCount=aStyles->Count();
if (0!=styleCount)
{
nsVoidArray sameWidthBorders;
nsStyleSpacing * spacing;
nsStyleSpacing * lastSpacing=nsnull;
nsMargin border;
PRInt32 maxWidth=0;
PRInt32 i;
PRUint8 side = aSide;
for (i=0; i<styleCount; i++)
{
spacing = (nsStyleSpacing *)(aStyles->ElementAt(i));
if ((PR_TRUE==aFlipLastSide) && (i==styleCount-1))
{
side = GetOpposingEdge(aSide);
lastSpacing = spacing;
}
if (spacing->GetBorderStyle(side)==NS_STYLE_BORDER_STYLE_HIDDEN)
{
aBorder.mStyle=NS_STYLE_BORDER_STYLE_HIDDEN;
aBorder.mWidth=0;
return;
}
else if (spacing->GetBorderStyle(side)!=NS_STYLE_BORDER_STYLE_NONE)
{
spacing->GetBorder(border);
nscoord borderWidth = GetWidthForSide(border, side);
if (borderWidth==maxWidth)
sameWidthBorders.AppendElement(spacing);
else if (borderWidth>maxWidth)
{
maxWidth=borderWidth;
sameWidthBorders.Clear();
sameWidthBorders.AppendElement(spacing);
}
}
}
aBorder.mWidth=maxWidth;
// now we've gone through each overlapping border once, and we have a list
// of all styles with the same width. If there's more than one, resolve the
// conflict based on border style
styleCount = sameWidthBorders.Count();
if (0==styleCount)
{ // all borders were of style NONE
aBorder.mWidth=0;
aBorder.mStyle=NS_STYLE_BORDER_STYLE_NONE;
return;
}
else if (1==styleCount)
{ // there was just one border of the largest width
spacing = (nsStyleSpacing *)(sameWidthBorders.ElementAt(0));
side=aSide;
if (spacing==lastSpacing)
side=GetOpposingEdge(aSide);
if (! spacing->GetBorderColor(side, aBorder.mColor)) {
// XXX EEEK handle transparent border color somehow...
}
aBorder.mStyle=spacing->GetBorderStyle(side);
return;
}
else
{
nsStyleSpacing *winningStyleBorder;
PRUint8 winningStyle=NS_STYLE_BORDER_STYLE_NONE;
for (i=0; i<styleCount; i++)
{
spacing = (nsStyleSpacing *)(sameWidthBorders.ElementAt(i));
side=aSide;
if (spacing==lastSpacing)
side=GetOpposingEdge(aSide);
PRUint8 thisStyle = spacing->GetBorderStyle(side);
PRUint8 borderCompare = CompareBorderStyles(thisStyle, winningStyle);
if (BORDER_PRECEDENT_HIGHER==borderCompare)
{
winningStyle=thisStyle;
winningStyleBorder = spacing;
}
else if (BORDER_PRECEDENT_EQUAL==borderCompare)
{ // we're in lowest-to-highest precedence order, so later border styles win
winningStyleBorder=spacing;
}
}
aBorder.mStyle = winningStyle;
side=aSide;
if (winningStyleBorder==lastSpacing)
side=GetOpposingEdge(aSide);
if (! winningStyleBorder->GetBorderColor(side, aBorder.mColor)) {
// XXX handle transparent border colors somehow
}
}
}
}
}
void nsTableFrame::RecalcLayoutData(nsIPresContext& aPresContext)
{
nsCellMap *cellMap = GetCellMap();
if (nsnull==cellMap)
return; // no info yet, so nothing useful to do
PRInt32 colCount = cellMap->GetColCount();
PRInt32 rowCount = cellMap->GetRowCount();
//XXX need to determine how much of what follows is really necessary
// it does collapsing margins between table elements
PRInt32 row = 0;
PRInt32 col = 0;
nsTableCellFrame* above = nsnull;
nsTableCellFrame* below = nsnull;
nsTableCellFrame* left = nsnull;
nsTableCellFrame* right = nsnull;
PRInt32 edge = 0;
nsVoidArray* boundaryCells[4];
for (edge = 0; edge < 4; edge++)
boundaryCells[edge] = new nsVoidArray();
if (colCount != 0 && rowCount != 0)
{
for (row = 0; row < rowCount; row++)
{
for (col = 0; col < colCount; col++)
{
nsTableCellFrame* cell = nsnull;
CellData* cellData = cellMap->GetCellAt(row,col);
if (cellData)
cell = cellData->mCell;
if (nsnull==cell)
continue;
PRInt32 colSpan = cell->GetColSpan();
PRInt32 rowSpan = cell->GetRowSpan();
// clear the cells for all for edges
for (edge = 0; edge < 4; edge++)
boundaryCells[edge]->Clear();
// Check to see if the cell data represents the top,left
// corner of a a table cell
// Check to see if cell the represents a top edge cell
if (0 == row)
above = nsnull;
else
{
cellData = cellMap->GetCellAt(row-1,col);
if (nsnull != cellData)
above = cellData->mRealCell->mCell;
// Does the cell data point to the same cell?
// If it is, then continue
if ((nsnull != above) && (above == cell))
continue;
}
// Check to see if cell the represents a left edge cell
if (0 == col)
left = nsnull;
else
{
cellData = cellMap->GetCellAt(row,col-1);
if (cellData != nsnull)
left = cellData->mRealCell->mCell;
if ((nsnull != left) && (left == cell))
continue;
}
// If this is the top,left edged cell
// Then add the cells on the for edges to the array
// Do the top and bottom edge
PRInt32 r,c;
PRInt32 r1,r2;
PRInt32 c1,c2;
PRInt32 last;
r1 = row - 1;
r2 = row + rowSpan;
c = col;
last = col + colSpan -1;
last = PR_MIN(last,colCount-1);
while (c <= last)
{
if (r1 != -1)
{
// Add top edge cells
if (c != col)
{
cellData = cellMap->GetCellAt(r1,c);
if ((cellData != nsnull) && (cellData->mCell != above))
{
above = cellData->mCell;
if (above != nsnull)
AppendLayoutData(boundaryCells[NS_SIDE_TOP],above);
}
}
else if (above != nsnull)
{
AppendLayoutData(boundaryCells[NS_SIDE_TOP],above);
}
}
if (r2 < rowCount)
{
// Add bottom edge cells
cellData = cellMap->GetCellAt(r2,c);
if ((cellData != nsnull) && cellData->mCell != below)
{
below = cellData->mCell;
if (below != nsnull)
AppendLayoutData(boundaryCells[NS_SIDE_BOTTOM],below);
}
}
c++;
}
// Do the left and right edge
c1 = col - 1;
c2 = col + colSpan;
r = row ;
last = row + rowSpan-1;
last = PR_MIN(last,rowCount-1);
while (r <= last)
{
// Add left edge cells
if (c1 != -1)
{
if (r != row)
{
cellData = cellMap->GetCellAt(r,c1);
if ((cellData != nsnull) && (cellData->mCell != left))
{
left = cellData->mCell;
if (left != nsnull)
AppendLayoutData(boundaryCells[NS_SIDE_LEFT],left);
}
}
else if (left != nsnull)
{
AppendLayoutData(boundaryCells[NS_SIDE_LEFT],left);
}
}
if (c2 < colCount)
{
// Add right edge cells
cellData = cellMap->GetCellAt(r,c2);
if ((cellData != nsnull) && (cellData->mCell != right))
{
right = cellData->mCell;
if (right != nsnull)
AppendLayoutData(boundaryCells[NS_SIDE_RIGHT],right);
}
}
r++;
}
cell->RecalcLayoutData(this,boundaryCells);
}
}
}
for (edge = 0; edge < 4; edge++)
delete boundaryCells[edge];
}
/////////////////////////////////////////////////////////////////////////////
// Child frame enumeration
NS_IMETHODIMP
nsTableFrame::FirstChild(nsIAtom* aListName, nsIFrame** aFirstChild) const
{
if (nsnull == aListName) {
*aFirstChild = mFrames.FirstChild();
return NS_OK;
}
else if (aListName == nsLayoutAtoms::colGroupList) {
*aFirstChild = mColGroups.FirstChild();
return NS_OK;
}
*aFirstChild = nsnull;
return NS_ERROR_INVALID_ARG;
}
NS_IMETHODIMP
nsTableFrame::GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom** aListName) const
{
NS_PRECONDITION(nsnull != aListName, "null OUT parameter pointer");
if (aIndex < 0) {
return NS_ERROR_INVALID_ARG;
}
*aListName = nsnull;
switch (aIndex) {
case NS_TABLE_FRAME_COLGROUP_LIST_INDEX:
*aListName = nsLayoutAtoms::colGroupList;
NS_ADDREF(*aListName);
break;
}
return NS_OK;
}
/* SEC: TODO: adjust the rect for captions */
NS_METHOD nsTableFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
// table paint code is concerned primarily with borders and bg color
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
const nsStyleDisplay* disp =
(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
if (disp->mVisible) {
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
const nsStyleColor* color =
(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
const nsStyleTable* tableStyle =
(const nsStyleTable*)mStyleContext->GetStyleData(eStyleStruct_Table);
nsRect rect(0, 0, mRect.width, mRect.height);
nsCompatibility mode;
aPresContext.GetCompatibilityMode(&mode);
if (eCompatibility_Standard == mode) {
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *color, *spacing, 0, 0);
// paint the column groups and columns
nsIFrame* colGroupFrame = mColGroups.FirstChild();
while (nsnull != colGroupFrame) {
PaintChild(aPresContext, aRenderingContext, aDirtyRect, colGroupFrame, aWhichLayer);
colGroupFrame->GetNextSibling(&colGroupFrame);
}
}
PRIntn skipSides = GetSkipSides();
if (NS_STYLE_BORDER_SEPARATE==tableStyle->mBorderCollapse)
{
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *spacing, mStyleContext, skipSides);
}
else
{
//printf("paint table frame\n");
nsCSSRendering::PaintBorderEdges(aPresContext, aRenderingContext, this,
aDirtyRect, rect, &mBorderEdges, mStyleContext, skipSides);
}
}
}
// for debug...
if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) && GetShowFrameBorders()) {
aRenderingContext.SetColor(NS_RGB(0,255,0));
aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height);
}
PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
return nsFrame::Paint(aPresContext,
aRenderingContext,
aDirtyRect,
aWhichLayer);
}
//null range means the whole thing
NS_IMETHODIMP
nsTableFrame::SetSelected(nsIDOMRange *aRange,PRBool aSelected, nsSpread aSpread)
{
//traverse through children unselect tables
if ((aSpread == eSpreadDown) && aSelected){
nsIFrame* kid;
nsresult rv = FirstChild(nsnull, &kid);
while (nsnull != kid) {
kid->SetSelected(nsnull,PR_FALSE,eSpreadDown);
kid->GetNextSibling(&kid);
}
}
return nsFrame::SetSelected(aRange,aSelected,eSpreadNone);
}
PRBool nsTableFrame::ParentDisablesSelection() const //override default behavior
{
PRBool returnval;
if (NS_FAILED(GetSelected(&returnval)))
return PR_FALSE;
if (returnval)
return PR_TRUE;
return nsFrame::ParentDisablesSelection();
}
PRIntn
nsTableFrame::GetSkipSides() const
{
PRIntn skip = 0;
// frame attribute was accounted for in nsHTMLTableElement::MapTableBorderInto
// account for pagination
if (nsnull != mPrevInFlow) {
skip |= 1 << NS_SIDE_TOP;
}
if (nsnull != mNextInFlow) {
skip |= 1 << NS_SIDE_BOTTOM;
}
return skip;
}
PRBool nsTableFrame::NeedsReflow(const nsHTMLReflowState& aReflowState, const nsSize& aMaxSize)
{
PRBool result = PR_TRUE;
if (eReflowReason_Incremental != aReflowState.reason)
{ // incremental reflows always need to be reflowed (for now)
if (PR_TRUE==mIsInvariantWidth)
result = PR_FALSE;
// XXX TODO: other optimization cases...
}
return result;
}
nsresult nsTableFrame::AdjustSiblingsAfterReflow(nsIPresContext& aPresContext,
InnerTableReflowState& aReflowState,
nsIFrame* aKidFrame,
nscoord aDeltaY)
{
nsIFrame* lastKidFrame = aKidFrame;
if (aDeltaY != 0) {
// Move the frames that follow aKidFrame by aDeltaY
nsIFrame* kidFrame;
aKidFrame->GetNextSibling(&kidFrame);
while (nsnull != kidFrame) {
nsPoint origin;
nsIHTMLReflow* htmlReflow;
// XXX We can't just slide the child if it has a next-in-flow
kidFrame->GetOrigin(origin);
origin.y += aDeltaY;
// XXX We need to send move notifications to the frame...
if (NS_OK == kidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow)) {
htmlReflow->WillReflow(aPresContext);
}
kidFrame->MoveTo(origin.x, origin.y);
// Get the next frame
lastKidFrame = kidFrame;
kidFrame->GetNextSibling(&kidFrame);
}
} else {
// Get the last frame
lastKidFrame = mFrames.LastChild();
}
// Update our running y-offset to reflect the bottommost child
nsRect rect;
lastKidFrame->GetRect(rect);
aReflowState.y = rect.YMost();
return NS_OK;
}
void nsTableFrame::SetColumnDimensions(nscoord aHeight)
{
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
nsMargin borderPadding;
spacing->CalcBorderPaddingFor(this, borderPadding);
nscoord colHeight = aHeight -= borderPadding.top + borderPadding.bottom;
nscoord cellSpacingX = GetCellSpacingX();
nscoord halfCellSpacingX = NSToCoordRound(((float)cellSpacingX) / (float)2);
nsIFrame* colGroupFrame = mColGroups.FirstChild();
PRInt32 colX = 0;
nsPoint colGroupOrigin(borderPadding.left, borderPadding.top);
while (nsnull != colGroupFrame) {
nscoord colGroupWidth = 0;
nsIFrame* colFrame = nsnull;
colGroupFrame->FirstChild(nsnull, &colFrame);
nsPoint colOrigin(0, 0);
while (nsnull != colFrame) {
NS_ASSERTION(colX < mColCount, "invalid number of columns");
nscoord colWidth = mColumnWidths[colX] + cellSpacingX;
if (mColCount == 1) {
colWidth += cellSpacingX;
}
else if ((0 == colX) || (mColCount - 1 == colX)) {
colWidth += halfCellSpacingX;
}
colGroupWidth += colWidth;
nsRect colRect(colOrigin.x, colOrigin.y, colWidth, colHeight);
colFrame->SetRect(colRect);
colFrame->GetNextSibling(&colFrame);
colOrigin.x += colWidth;
colX++;
}
nsRect colGroupRect(colGroupOrigin.x, colGroupOrigin.y, colGroupWidth, colHeight);
colGroupFrame->SetRect(colGroupRect);
colGroupFrame->GetNextSibling(&colGroupFrame);
colGroupOrigin.x += colGroupWidth;
}
}
// SEC: TODO need to worry about continuing frames prev/next in flow for splitting across pages.
/* overview:
if mFirstPassValid is false, this is our first time through since content was last changed
do pass 1
get min/max info for all cells in an infinite space
do column balancing
do pass 2
use column widths to size table and ResizeReflow rowgroups (and therefore rows and cells)
*/
/* Layout the entire inner table. */
NS_METHOD nsTableFrame::Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
if (gsDebug==PR_TRUE)
{
printf("-----------------------------------------------------------------\n");
printf("nsTableFrame::Reflow: table %p reason %d given maxSize=%d,%d\n",
this, aReflowState.reason, aReflowState.availableWidth, aReflowState.availableHeight);
}
// Initialize out parameter
if (nsnull != aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = 0;
aDesiredSize.maxElementSize->height = 0;
}
aStatus = NS_FRAME_COMPLETE;
nsresult rv = NS_OK;
if (eReflowReason_Incremental == aReflowState.reason) {
rv = IncrementalReflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
// NeedsReflow and IsFirstPassValid take into account reflow type = Initial_Reflow
if (PR_TRUE==NeedsReflow(aReflowState, nsSize(aReflowState.availableWidth, aReflowState.availableHeight)))
{
PRBool needsRecalc=PR_FALSE;
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("TIF Reflow: needs reflow\n");
if (eReflowReason_Initial!=aReflowState.reason && PR_FALSE==IsCellMapValid())
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("TIF Reflow: cell map invalid, rebuilding...\n");
if (nsnull!=mCellMap)
delete mCellMap;
mCellMap = new nsCellMap(0,0);
ReBuildCellMap();
#ifdef NS_DEBUG
if (PR_TRUE==gsDebugIR)
{
DumpCellMap();
printf("tableFrame thinks colCount is %d\n", mEffectiveColCount);
}
#endif
needsRecalc=PR_TRUE;
}
if (PR_FALSE==IsFirstPassValid())
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("TIF Reflow: first pass is invalid, rebuilding...\n");
nsReflowReason reason = aReflowState.reason;
if (eReflowReason_Initial!=reason)
reason = eReflowReason_Resize;
ComputeVerticalCollapsingBorders(aPresContext, 0, -1);
rv = ResizeReflowPass1(aPresContext, aDesiredSize, aReflowState, aStatus, nsnull, reason, PR_TRUE);
if (NS_FAILED(rv))
return rv;
needsRecalc=PR_TRUE;
}
if (PR_FALSE==IsColumnCacheValid())
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("TIF Reflow: column cache is invalid, rebuilding...\n");
needsRecalc=PR_TRUE;
}
if (PR_TRUE==needsRecalc)
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("TIF Reflow: needs recalc. Calling BuildColumnCache...\n");
BuildColumnCache(aPresContext, aDesiredSize, aReflowState, aStatus);
RecalcLayoutData(aPresContext); // Recalculate Layout Dependencies
// if we needed to rebuild the column cache, the data stored in the layout strategy is invalid
if (nsnull!=mTableLayoutStrategy)
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("TIF Reflow: Re-init layout strategy\n");
mTableLayoutStrategy->Initialize(aDesiredSize.maxElementSize, GetColCount(), aReflowState.computedWidth);
mColumnWidthsValid=PR_TRUE; //so we don't do this a second time below
}
}
if (PR_FALSE==IsColumnWidthsValid())
{
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugIR) printf("TIF Reflow: Re-init layout strategy\n");
if (nsnull!=mTableLayoutStrategy)
{
mTableLayoutStrategy->Initialize(aDesiredSize.maxElementSize, GetColCount(), aReflowState.computedWidth);
mColumnWidthsValid=PR_TRUE;
}
}
if (nsnull==mPrevInFlow)
{ // only do this for a first-in-flow table frame
// assign column widths, and assign aMaxElementSize->width
BalanceColumnWidths(aPresContext, aReflowState, nsSize(aReflowState.availableWidth, aReflowState.availableHeight),
aDesiredSize.maxElementSize);
// assign table width
SetTableWidth(aPresContext);
}
// Constrain our reflow width to the computed table width. Note: this is based
// on the width of the first-in-flow
nsHTMLReflowState reflowState(aReflowState);
PRInt32 pass1Width = mRect.width;
if (mPrevInFlow) {
nsTableFrame* table = (nsTableFrame*)GetFirstInFlow();
pass1Width = table->mRect.width;
}
reflowState.availableWidth = pass1Width;
rv = ResizeReflowPass2(aPresContext, aDesiredSize, reflowState, aStatus);
if (NS_FAILED(rv)) {
return rv;
}
aDesiredSize.width = PR_MIN(aDesiredSize.width, pass1Width);
}
else
{
// set aDesiredSize and aMaxElementSize
}
// DumpCellMap is useful for debugging the results of an incremental reflow. But it's noisy,
// so this module should not be checked in with the call enabled.
//DumpCellMap();
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
{
if (nsnull!=aDesiredSize.maxElementSize)
printf("%p: Inner table reflow complete, returning aDesiredSize = %d,%d and aMaxElementSize=%d,%d\n",
this, aDesiredSize.width, aDesiredSize.height,
aDesiredSize.maxElementSize->width, aDesiredSize.maxElementSize->height);
else
printf("%p: Inner table reflow complete, returning aDesiredSize = %d,%d and NSNULL aMaxElementSize\n",
this, aDesiredSize.width, aDesiredSize.height);
}
SetColumnDimensions(aDesiredSize.height);
if (PR_TRUE==gsDebug) printf("end reflow for table %p\n", this);
return rv;
}
/** the first of 2 reflow passes
* lay out the captions and row groups in an infinite space (NS_UNCONSTRAINEDSIZE)
* cache the results for each caption and cell.
* if successful, set mFirstPassValid=PR_TRUE, so we know we can skip this step
* next time. mFirstPassValid is set to PR_FALSE when content is changed.
* NOTE: should never get called on a continuing frame! All cached pass1 state
* is stored in the inner table first-in-flow.
*/
NS_METHOD nsTableFrame::ResizeReflowPass1(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableRowGroupFrame * aStartingFrame,
nsReflowReason aReason,
PRBool aDoSiblingFrames)
{
NS_PRECONDITION(aReflowState.frame == this, "bad reflow state");
NS_PRECONDITION(aReflowState.parentReflowState->frame == mParent,
"bad parent reflow state");
NS_ASSERTION(nsnull==mPrevInFlow, "illegal call, cannot call pass 1 on a continuing frame.");
NS_ASSERTION(nsnull != mContent, "null content");
if (PR_TRUE==gsDebugNT) printf("%p nsTableFrame::ResizeReflow Pass1: maxSize=%d,%d\n",
this, aReflowState.availableWidth, aReflowState.availableHeight);
nsresult rv=NS_OK;
// set out params
aStatus = NS_FRAME_COMPLETE;
nsSize availSize(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE); // availSize is the space available at any given time in the process
nsSize maxSize(0, 0); // maxSize is the size of the largest child so far in the process
nsSize kidMaxSize(0,0);
nsHTMLReflowMetrics kidSize(&kidMaxSize);
nscoord y = 0;
// Compute the insets (sum of border and padding)
// XXX: since this is pass1 reflow and where we place the rowgroup frames is irrelevant, insets are probably a waste
if (PR_TRUE==RequiresPass1Layout())
{
nsIFrame* kidFrame = aStartingFrame;
if (nsnull==kidFrame)
kidFrame=mFrames.FirstChild();
for ( ; nsnull != kidFrame; kidFrame->GetNextSibling(&kidFrame))
{
const nsStyleDisplay *childDisplay;
kidFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if ((NS_STYLE_DISPLAY_TABLE_HEADER_GROUP != childDisplay->mDisplay) &&
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP != childDisplay->mDisplay) &&
(NS_STYLE_DISPLAY_TABLE_ROW_GROUP != childDisplay->mDisplay) )
{ // it's an unknown frame type, give it a generic reflow and ignore the results
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
availSize, aReason);
if (PR_TRUE==gsDebugIR) printf("\nTIF IR: Reflow Pass 1 of unknown frame %p of type %d with reason=%d\n",
kidFrame, childDisplay->mDisplay, aReason);
// rv intentionally not set here
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, aStatus);
continue;
}
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
availSize, aReason);
// Note: we don't bother checking here for whether we should clear the
// isTopOfPage reflow state flag, because we're dealing with an unconstrained
// height and it isn't an issue...
if (PR_TRUE==gsDebugIR) printf("\nTIF IR: Reflow Pass 1 of frame %p with reason=%d\n", kidFrame, aReason);
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, aStatus);
// Place the child since some of its content fit in us.
if (PR_TRUE==gsDebugNT) {
printf ("%p: reflow of row group returned desired=%d,%d, max-element=%d,%d\n",
this, kidSize.width, kidSize.height, kidMaxSize.width, kidMaxSize.height);
}
kidFrame->SetRect(nsRect(0, 0, kidSize.width, kidSize.height));
if (NS_UNCONSTRAINEDSIZE==kidSize.height)
y = NS_UNCONSTRAINEDSIZE;
else
y += kidSize.height;
if (kidMaxSize.width > maxSize.width) {
maxSize.width = kidMaxSize.width;
}
if (kidMaxSize.height > maxSize.height) {
maxSize.height = kidMaxSize.height;
}
if (NS_FRAME_IS_NOT_COMPLETE(aStatus)) {
// If the child didn't finish layout then it means that it used
// up all of our available space (or needs us to split).
break;
}
if (PR_FALSE==aDoSiblingFrames)
break;
}
// if required, give the colgroups their initial reflows
if (PR_TRUE==aDoSiblingFrames)
{
kidFrame=mColGroups.FirstChild();
for ( ; nsnull != kidFrame; kidFrame->GetNextSibling(&kidFrame))
{
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
availSize, aReason);
if (PR_TRUE==gsDebugIR) printf("\nTIF IR: Reflow Pass 1 of colgroup frame %p with reason=%d\n", kidFrame, aReason);
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, aStatus);
kidFrame->SetRect(nsRect(0, 0, 0, 0));
}
}
}
aDesiredSize.width = kidSize.width;
mFirstPassValid = PR_TRUE;
return rv;
}
nsIFrame*
nsTableFrame::GetFirstBodyRowGroupFrame()
{
nsIFrame* headerFrame = nsnull;
nsIFrame* footerFrame = nsnull;
for (nsIFrame* kidFrame = mFrames.FirstChild(); nsnull != kidFrame; ) {
const nsStyleDisplay *childDisplay;
kidFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
// We expect the header and footer row group frames to be first, and we only
// allow one header and one footer
if (NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == childDisplay->mDisplay) {
if (headerFrame) {
// We already have a header frame and so this header frame is treated
// like an ordinary body row group frame
return kidFrame;
}
headerFrame = kidFrame;
} else if (NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == childDisplay->mDisplay) {
if (footerFrame) {
// We already have a footer frame and so this footer frame is treated
// like an ordinary body row group frame
return kidFrame;
}
footerFrame = kidFrame;
} else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == childDisplay->mDisplay) {
return kidFrame;
}
// Get the next child
kidFrame->GetNextSibling(&kidFrame);
}
return nsnull;
}
// Table specific version that takes into account repeated header and footer
// frames when continuing table frames
void
nsTableFrame::PushChildren(nsIFrame* aFromChild, nsIFrame* aPrevSibling)
{
NS_PRECONDITION(nsnull != aFromChild, "null pointer");
NS_PRECONDITION(nsnull != aPrevSibling, "pushing first child");
#ifdef NS_DEBUG
nsIFrame* prevNextSibling;
aPrevSibling->GetNextSibling(&prevNextSibling);
NS_PRECONDITION(prevNextSibling == aFromChild, "bad prev sibling");
#endif
// Disconnect aFromChild from its previous sibling
aPrevSibling->SetNextSibling(nsnull);
if (nsnull != mNextInFlow) {
nsTableFrame* nextInFlow = (nsTableFrame*)mNextInFlow;
// Insert the frames after any repeated header and footer frames
nsIFrame* firstBodyFrame = nextInFlow->GetFirstBodyRowGroupFrame();
nsIFrame* prevSibling = nsnull;
if (firstBodyFrame) {
prevSibling = nextInFlow->mFrames.GetPrevSiblingFor(firstBodyFrame);
}
// When pushing and pulling frames we need to check for whether any
// views need to be reparented.
for (nsIFrame* f = aFromChild; f; f->GetNextSibling(&f)) {
nsHTMLContainerFrame::ReparentFrameView(f, this, nextInFlow);
}
nextInFlow->mFrames.InsertFrames(mNextInFlow, prevSibling, aFromChild);
}
else {
// Add the frames to our overflow list
NS_ASSERTION(mOverflowFrames.IsEmpty(), "bad overflow list");
mOverflowFrames.SetFrames(aFromChild);
}
}
// Table specific version that takes into account header and footer row group
// frames that are repeated for continuing table frames
//
// Appends the overflow frames to the end of the child list, just like the
// nsContainerFrame version does, except that there are no assertions that
// the child list is empty (it may not be empty, because there may be repeated
// header/footer frames)
PRBool
nsTableFrame::MoveOverflowToChildList()
{
PRBool result = PR_FALSE;
// Check for an overflow list with our prev-in-flow
nsTableFrame* prevInFlow = (nsTableFrame*)mPrevInFlow;
if (nsnull != prevInFlow) {
if (prevInFlow->mOverflowFrames.NotEmpty()) {
// When pushing and pulling frames we need to check for whether any
// views need to be reparented.
for (nsIFrame* f = prevInFlow->mOverflowFrames.FirstChild(); f; f->GetNextSibling(&f)) {
nsHTMLContainerFrame::ReparentFrameView(f, prevInFlow, this);
}
mFrames.InsertFrames(this, nsnull, prevInFlow->mOverflowFrames);
result = PR_TRUE;
}
}
// It's also possible that we have an overflow list for ourselves
if (mOverflowFrames.NotEmpty()) {
mFrames.AppendFrames(nsnull, mOverflowFrames);
result = PR_TRUE;
}
return result;
}
/** the second of 2 reflow passes
*/
NS_METHOD nsTableFrame::ResizeReflowPass2(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
NS_PRECONDITION(aReflowState.frame == this, "bad reflow state");
NS_PRECONDITION(aReflowState.parentReflowState->frame == mParent,
"bad parent reflow state");
if (PR_TRUE==gsDebugNT)
printf("%p nsTableFrame::ResizeReflow Pass2: maxSize=%d,%d\n",
this, aReflowState.availableWidth, aReflowState.availableHeight);
nsresult rv = NS_OK;
// set out param
aStatus = NS_FRAME_COMPLETE;
const nsStyleSpacing* mySpacing = (const nsStyleSpacing*)
mStyleContext->GetStyleData(eStyleStruct_Spacing);
nsMargin borderPadding;
GetTableBorder (borderPadding); // this gets the max border thickness at each edge
nsMargin padding;
mySpacing->GetPadding(padding);
borderPadding += padding;
InnerTableReflowState state(aPresContext, aReflowState, borderPadding);
// now that we've computed the column width information, reflow all children
#ifdef NS_DEBUG
//PreReflowCheck();
#endif
// Check for an overflow list, and append any row group frames being
// pushed
MoveOverflowToChildList();
// Reflow the existing frames
if (mFrames.NotEmpty()) {
rv = ReflowMappedChildren(aPresContext, aDesiredSize, state, aStatus);
}
// Did we successfully reflow our mapped children?
if (NS_FRAME_COMPLETE == aStatus) {
// Any space left?
PRInt32 numKids;
mContent->ChildCount(numKids);
if (state.availSize.height > 0) {
// Try and pull-up some children from a next-in-flow
rv = PullUpChildren(aPresContext, aDesiredSize, state, aStatus);
}
}
// Return our size and our status
aDesiredSize.width = ComputeDesiredWidth(aReflowState);
nscoord defaultHeight = state.y + borderPadding.top + borderPadding.bottom;
aDesiredSize.height = ComputeDesiredHeight(aPresContext, aReflowState, defaultHeight);
AdjustForCollapsingRows(aPresContext, aDesiredSize.height);
AdjustForCollapsingCols(aPresContext, aDesiredSize.width);
// once horizontal borders are computed and all row heights are set,
// we need to fix up length of vertical edges
// XXX need to figure start row and end row correctly
if (NS_STYLE_BORDER_COLLAPSE==GetBorderCollapseStyle())
DidComputeHorizontalCollapsingBorders(aPresContext, 0, 10000);
#ifdef NS_DEBUG
//PostReflowCheck(aStatus);
#endif
return rv;
}
// collapsing row groups, rows, col groups and cols are accounted for after both passes of
// reflow so that it has no effect on the calculations of reflow.
NS_METHOD nsTableFrame::AdjustForCollapsingRowGroup(nsIFrame* aRowGroupFrame,
PRInt32& aRowX)
{
const nsStyleDisplay* groupDisplay;
aRowGroupFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)groupDisplay));
PRBool groupIsCollapsed = (NS_STYLE_VISIBILITY_COLLAPSE == groupDisplay->mVisible);
nsTableRowFrame* rowFrame = nsnull;
aRowGroupFrame->FirstChild(nsnull, (nsIFrame**)&rowFrame);
while (nsnull != rowFrame) {
const nsStyleDisplay *rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == rowDisplay->mDisplay) {
if (groupIsCollapsed || (NS_STYLE_VISIBILITY_COLLAPSE == rowDisplay->mVisible)) {
mCellMap->SetRowCollapsedAt(aRowX, PR_TRUE);
}
aRowX++;
}
else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == rowDisplay->mDisplay) {
AdjustForCollapsingRowGroup(rowFrame, aRowX);
}
rowFrame->GetNextSibling((nsIFrame**)&rowFrame);
}
return NS_OK;
}
NS_METHOD nsTableFrame::CollapseRowGroup(nsIFrame* aRowGroupFrame,
const nscoord& aYTotalOffset,
nscoord& aYGroupOffset, PRInt32& aRowX)
{
const nsStyleDisplay* groupDisplay;
aRowGroupFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)groupDisplay));
PRBool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupDisplay->mVisible);
nsIFrame* rowFrame;
aRowGroupFrame->FirstChild(nsnull, &rowFrame);
while (nsnull != rowFrame) {
const nsStyleDisplay* rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == rowDisplay->mDisplay) {
CollapseRowGroup(rowFrame, aYTotalOffset, aYGroupOffset, aRowX);
}
else if (NS_STYLE_DISPLAY_TABLE_ROW == rowDisplay->mDisplay) {
nsRect rowRect;
rowFrame->GetRect(rowRect);
if (collapseGroup || (NS_STYLE_VISIBILITY_COLLAPSE == rowDisplay->mVisible)) {
aYGroupOffset += rowRect.height;
rowRect.height = 0;
rowFrame->SetRect(rowRect);
nsIFrame* cellFrame;
rowFrame->FirstChild(nsnull, &cellFrame);
while (nsnull != cellFrame) {
const nsStyleDisplay* cellDisplay;
cellFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)cellDisplay));
if (NS_STYLE_DISPLAY_TABLE_CELL == cellDisplay->mDisplay) {
nsTableCellFrame* cFrame = (nsTableCellFrame*)cellFrame;
nsRect cRect;
cFrame->GetRect(cRect);
cRect.height -= rowRect.height;
cFrame->SetCollapseOffsetY(-aYGroupOffset);
cFrame->SetRect(cRect);
}
cellFrame->GetNextSibling(&cellFrame);
}
// check if a cell above spans into here
//if (!collapseGroup) {
PRInt32 numCols = mCellMap->GetColCount();
nsTableCellFrame* lastCell = nsnull;
for (int colX = 0; colX < numCols; colX++) {
CellData* cellData = mCellMap->GetCellAt(aRowX, colX);
if (cellData && !cellData->mCell) { // a cell above is spanning into here
// adjust the real cell's rect only once
nsTableCellFrame* realCell = cellData->mRealCell->mCell;
if (realCell != lastCell) {
nsRect realRect;
realCell->GetRect(realRect);
realRect.height -= rowRect.height;
realCell->SetRect(realRect);
}
lastCell = realCell;
}
}
//}
} else { // row is not collapsed but needs to be adjusted by those that are
rowRect.y -= aYGroupOffset;
rowFrame->SetRect(rowRect);
}
aRowX++;
}
rowFrame->GetNextSibling(&rowFrame);
} // end row frame while
nsRect groupRect;
aRowGroupFrame->GetRect(groupRect);
groupRect.height -= aYGroupOffset;
groupRect.y -= aYTotalOffset;
aRowGroupFrame->SetRect(groupRect);
return NS_OK;
}
NS_METHOD nsTableFrame::AdjustForCollapsingRows(nsIPresContext& aPresContext,
nscoord& aHeight)
{
// determine which row groups and rows are collapsed
PRInt32 rowX = 0;
nsIFrame* childFrame;
FirstChild(nsnull, &childFrame);
while (nsnull != childFrame) {
const nsStyleDisplay* groupDisplay;
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)groupDisplay));
if (IsRowGroup(groupDisplay->mDisplay)) {
AdjustForCollapsingRowGroup(childFrame, rowX);
}
childFrame->GetNextSibling(&childFrame);
}
if (mCellMap->GetNumCollapsedRows() <= 0) {
return NS_OK; // no collapsed rows, we're done
}
// collapse the rows and/or row groups
nsIFrame* groupFrame = mFrames.FirstChild();
nscoord yGroupOffset = 0; // total offset among rows within a single row group
nscoord yTotalOffset = 0; // total offset among all rows in all row groups
rowX = 0;
while (nsnull != groupFrame) {
const nsStyleDisplay* groupDisplay;
groupFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)groupDisplay));
if (IsRowGroup(groupDisplay->mDisplay)) {
CollapseRowGroup(groupFrame, yTotalOffset, yGroupOffset, rowX);
}
yTotalOffset += yGroupOffset;
yGroupOffset = 0;
groupFrame->GetNextSibling(&groupFrame);
} // end group frame while
aHeight -= yTotalOffset;
return NS_OK;
}
NS_METHOD nsTableFrame::AdjustForCollapsingCols(nsIPresContext& aPresContext,
nscoord& aWidth)
{
// determine which col groups and cols are collapsed
nsIFrame* childFrame = mColGroups.FirstChild();
PRInt32 colX = 0;
while (nsnull != childFrame) {
const nsStyleDisplay* groupDisplay;
GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)groupDisplay));
PRBool groupIsCollapsed = (NS_STYLE_VISIBILITY_COLLAPSE == groupDisplay->mVisible);
nsTableColFrame* colFrame = nsnull;
childFrame->FirstChild(nsnull, (nsIFrame**)&colFrame);
while (nsnull != colFrame) {
const nsStyleDisplay *colDisplay;
colFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)colDisplay));
if (NS_STYLE_DISPLAY_TABLE_COLUMN == colDisplay->mDisplay) {
if (groupIsCollapsed || (NS_STYLE_VISIBILITY_COLLAPSE == colDisplay->mVisible)) {
mCellMap->SetColCollapsedAt(colX, PR_TRUE);
}
}
colFrame->GetNextSibling((nsIFrame**)&colFrame);
colX++;
}
childFrame->GetNextSibling(&childFrame);
}
if (mCellMap->GetNumCollapsedCols() <= 0) {
return NS_OK; // no collapsed cols, we're done
}
PRInt32 numCols = colX;
// collapse the cols and/or col groups
PRInt32 numRows = mCellMap->GetRowCount();
nsTableIterator groupIter(mColGroups, eTableDIR);
nsIFrame* groupFrame = groupIter.First();
nscoord cellSpacingX = GetCellSpacingX();
nscoord xOffset = 0;
colX = (groupIter.IsLeftToRight()) ? 0 : numCols - 1;
PRInt32 direction = (groupIter.IsLeftToRight()) ? 1 : -1;
while (nsnull != groupFrame) {
const nsStyleDisplay* groupDisplay;
groupFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)groupDisplay));
PRBool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupDisplay->mVisible);
nsTableIterator colIter(*groupFrame, eTableDIR);
nsIFrame* colFrame = colIter.First();
while (nsnull != colFrame) {
const nsStyleDisplay* colDisplay;
colFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)colDisplay));
if (NS_STYLE_DISPLAY_TABLE_COLUMN == colDisplay->mDisplay) {
PRBool collapseCol = (NS_STYLE_VISIBILITY_COLLAPSE == colDisplay->mVisible);
PRInt32 colSpan = ((nsTableColFrame*)colFrame)->GetSpan();
for (PRInt32 spanX = 0; spanX < colSpan; spanX++) {
PRInt32 col2X = colX + (direction * spanX);
PRInt32 colWidth = GetColumnWidth(col2X);
if (collapseGroup || collapseCol) {
xOffset += colWidth + cellSpacingX;
}
nsTableCellFrame* lastCell = nsnull;
nsTableCellFrame* cellFrame = nsnull;
for (PRInt32 rowX = 0; rowX < numRows; rowX++) {
CellData* cellData = mCellMap->GetCellAt(rowX, col2X);
nsRect cellRect;
if (cellData) {
cellFrame = cellData->mCell;
if (cellFrame) { // the cell originates at (rowX, colX)
cellFrame->GetRect(cellRect);
if (collapseGroup || collapseCol) {
if (lastCell != cellFrame) { // do it only once if there is a row span
cellRect.width -= colWidth;
cellFrame->SetCollapseOffsetX(-xOffset);
}
} else { // the cell is not in a collapsed col but needs to move
cellRect.x -= xOffset;
}
cellFrame->SetRect(cellRect);
// if the cell does not originate at (rowX, colX), adjust the real cells width
} else if (collapseGroup || collapseCol) {
cellFrame = cellData->mRealCell->mCell;
if ((cellFrame) && (lastCell != cellFrame)) {
cellFrame->GetRect(cellRect);
cellRect.width -= colWidth + cellSpacingX;
cellFrame->SetRect(cellRect);
}
}
}
lastCell = cellFrame;
}
}
colX += direction * colSpan;
}
colFrame = colIter.Next();
} // inner while
groupFrame = groupIter.Next();
} // outer while
aWidth -= xOffset;
return NS_OK;
}
NS_METHOD nsTableFrame::GetBorderPlusMarginPadding(nsMargin& aResult)
{
const nsStyleSpacing* mySpacing = (const nsStyleSpacing*)
mStyleContext->GetStyleData(eStyleStruct_Spacing);
nsMargin borderPadding;
GetTableBorder (borderPadding);
nsMargin padding;
mySpacing->GetPadding(padding);
borderPadding += padding;
aResult = borderPadding;
return NS_OK;
}
NS_METHOD nsTableFrame::IncrementalReflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
if (PR_TRUE==gsDebugIR) printf("\nTIF IR: IncrementalReflow\n");
nsresult rv = NS_OK;
nsMargin borderPadding;
GetBorderPlusMarginPadding(borderPadding);
InnerTableReflowState state(aPresContext, aReflowState, borderPadding);
// determine if this frame is the target or not
nsIFrame *target=nsnull;
rv = aReflowState.reflowCommand->GetTarget(target);
if ((PR_TRUE==NS_SUCCEEDED(rv)) && (nsnull!=target))
{
// this is the target if target is either this or the outer table frame containing this inner frame
nsIFrame *outerTableFrame=nsnull;
GetParent(&outerTableFrame);
if ((this==target) || (outerTableFrame==target))
rv = IR_TargetIsMe(aPresContext, aDesiredSize, state, aStatus);
else
{
// Get the next frame in the reflow chain
nsIFrame* nextFrame;
aReflowState.reflowCommand->GetNext(nextFrame);
// Recover our reflow state
//RecoverState(state, nextFrame);
rv = IR_TargetIsChild(aPresContext, aDesiredSize, state, aStatus, nextFrame);
}
}
return rv;
}
NS_METHOD nsTableFrame::IR_TargetIsMe(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus)
{
nsresult rv = NS_OK;
aStatus = NS_FRAME_COMPLETE;
nsIReflowCommand::ReflowType type;
aReflowState.reflowState.reflowCommand->GetType(type);
nsIFrame *objectFrame;
aReflowState.reflowState.reflowCommand->GetChildFrame(objectFrame);
const nsStyleDisplay *childDisplay=nsnull;
if (nsnull!=objectFrame)
objectFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (PR_TRUE==gsDebugIR) printf("TIF IR: IncrementalReflow_TargetIsMe with type=%d\n", type);
switch (type)
{
case nsIReflowCommand::FrameInserted :
NS_ASSERTION(nsnull!=objectFrame, "bad objectFrame");
NS_ASSERTION(nsnull!=childDisplay, "bad childDisplay");
if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == childDisplay->mDisplay)
{
rv = IR_ColGroupInserted(aPresContext, aDesiredSize, aReflowState, aStatus,
(nsTableColGroupFrame*)objectFrame, PR_FALSE);
}
else if (IsRowGroup(childDisplay->mDisplay))
{
rv = IR_RowGroupInserted(aPresContext, aDesiredSize, aReflowState, aStatus,
GetRowGroupFrameFor(objectFrame, childDisplay), PR_FALSE);
}
else
{
rv = AddFrame(aReflowState.reflowState, objectFrame);
}
break;
case nsIReflowCommand::FrameAppended :
if (!objectFrame)
break;
if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == childDisplay->mDisplay)
{
rv = IR_ColGroupAppended(aPresContext, aDesiredSize, aReflowState, aStatus,
(nsTableColGroupFrame*)objectFrame);
}
else if (IsRowGroup(childDisplay->mDisplay))
{
rv = IR_RowGroupAppended(aPresContext, aDesiredSize, aReflowState, aStatus,
GetRowGroupFrameFor(objectFrame, childDisplay));
}
else
{ // no optimization to be done for Unknown frame types, so just reuse the Inserted method
rv = AddFrame(aReflowState.reflowState, objectFrame);
}
break;
/*
case nsIReflowCommand::FrameReplaced :
NS_ASSERTION(nsnull!=objectFrame, "bad objectFrame");
NS_ASSERTION(nsnull!=childDisplay, "bad childDisplay");
*/
case nsIReflowCommand::FrameRemoved :
NS_ASSERTION(nsnull!=objectFrame, "bad objectFrame");
NS_ASSERTION(nsnull!=childDisplay, "bad childDisplay");
if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == childDisplay->mDisplay)
{
rv = IR_ColGroupRemoved(aPresContext, aDesiredSize, aReflowState, aStatus,
(nsTableColGroupFrame*)objectFrame);
}
else if (IsRowGroup(childDisplay->mDisplay))
{
rv = IR_RowGroupRemoved(aPresContext, aDesiredSize, aReflowState, aStatus,
GetRowGroupFrameFor(objectFrame, childDisplay));
}
else
{
rv = mFrames.DeleteFrame(aPresContext, objectFrame);
}
break;
case nsIReflowCommand::StyleChanged :
rv = IR_StyleChanged(aPresContext, aDesiredSize, aReflowState, aStatus);
break;
case nsIReflowCommand::ContentChanged :
NS_ASSERTION(PR_FALSE, "illegal reflow type: ContentChanged");
rv = NS_ERROR_ILLEGAL_VALUE;
break;
case nsIReflowCommand::PullupReflow:
case nsIReflowCommand::PushReflow:
case nsIReflowCommand::CheckPullupReflow :
case nsIReflowCommand::UserDefined :
default:
NS_NOTYETIMPLEMENTED("unimplemented reflow command type");
rv = NS_ERROR_NOT_IMPLEMENTED;
if (PR_TRUE==gsDebugIR) printf("TIF IR: reflow command not implemented.\n");
break;
}
return rv;
}
NS_METHOD nsTableFrame::IR_ColGroupInserted(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableColGroupFrame * aInsertedFrame,
PRBool aReplace)
{
if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_ColGroupInserted for frame %p\n", aInsertedFrame);
nsresult rv=NS_OK;
PRBool adjustStartingColIndex=PR_FALSE;
PRInt32 startingColIndex=0;
// find out what frame to insert aInsertedFrame after
nsIFrame *frameToInsertAfter=nsnull;
rv = aReflowState.reflowState.reflowCommand->GetPrevSiblingFrame(frameToInsertAfter);
// insert aInsertedFrame as the first child. Set its start col index to 0
if (nsnull==frameToInsertAfter)
{
mColGroups.InsertFrame(nsnull, nsnull, aInsertedFrame);
startingColIndex += aInsertedFrame->SetStartColumnIndex(0);
adjustStartingColIndex=PR_TRUE;
}
nsIFrame *childFrame=mColGroups.FirstChild();
nsIFrame *prevSib=nsnull;
while ((NS_SUCCEEDED(rv)) && (nsnull!=childFrame))
{
if ((nsnull!=frameToInsertAfter) && (childFrame==frameToInsertAfter))
{
nsIFrame *nextSib=nsnull;
frameToInsertAfter->GetNextSibling(&nextSib);
aInsertedFrame->SetNextSibling(nextSib);
frameToInsertAfter->SetNextSibling(aInsertedFrame);
// account for childFrame being a COLGROUP now
if (PR_FALSE==adjustStartingColIndex) // we haven't gotten to aDeletedFrame yet
startingColIndex += ((nsTableColGroupFrame *)childFrame)->GetColumnCount();
// skip ahead to aInsertedFrame, since we just handled the frame we inserted after
childFrame=aInsertedFrame;
adjustStartingColIndex=PR_TRUE; // now that we've inserted aInsertedFrame,
// start adjusting subsequent col groups' starting col index including aInsertedFrame
}
if (PR_FALSE==adjustStartingColIndex) // we haven't gotten to aDeletedFrame yet
startingColIndex += ((nsTableColGroupFrame *)childFrame)->GetColumnCount();
else // we've removed aDeletedFrame, now adjust the starting col index of all subsequent col groups
startingColIndex += ((nsTableColGroupFrame *)childFrame)->SetStartColumnIndex(startingColIndex);
prevSib=childFrame;
rv = childFrame->GetNextSibling(&childFrame);
}
InvalidateColumnCache();
//XXX: what we want to do here is determine if the new COL information changes anything about layout
// if not, skip invalidating the first passs
// if so, and we can fix the first pass info
return rv;
}
NS_METHOD nsTableFrame::IR_ColGroupAppended(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableColGroupFrame * aAppendedFrame)
{
if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_ColGroupAppended for frame %p\n", aAppendedFrame);
nsresult rv=NS_OK;
PRInt32 startingColIndex=0;
nsIFrame *childFrame=mColGroups.FirstChild();
nsIFrame *lastChild=childFrame;
while ((NS_SUCCEEDED(rv)) && (nsnull!=childFrame))
{
startingColIndex += ((nsTableColGroupFrame *)childFrame)->GetColumnCount();
lastChild=childFrame;
rv = childFrame->GetNextSibling(&childFrame);
}
// append aAppendedFrame
if (nsnull!=lastChild)
lastChild->SetNextSibling(aAppendedFrame);
else
mColGroups.SetFrames(aAppendedFrame);
aAppendedFrame->SetStartColumnIndex(startingColIndex);
#if 0
we would only want to do this if manufactured col groups were invisible to the DOM. Since they
currently are visible, they should behave just as if they were content-backed "real" colgroups
If this decision is changed, the code below is a half-finished attempt to rationalize the situation.
It requires having built a list of the colGroups before we get to this point.
// look at the last col group. If it is implicit, and it's cols are implicit, then
// it and its cols were manufactured for table layout.
// Delete it if possible, otherwise move it to the end of the list
if (0<colGroupCount)
{
nsTableColGroupFrame *colGroup = (nsTableColGroupFrame *)(colGroupList.ElementAt(colGroupCount-1));
if (PR_TRUE==colGroup->IsManufactured())
{ // account for the new COLs that were added in aAppendedFrame
// first, try to delete the implicit colgroup
// if we couldn't delete it, move the implicit colgroup to the end of the list
// and adjust it's col indexes
nsIFrame *colGroupNextSib;
colGroup->GetNextSibling(colGroupNextSib);
childFrame=mColGroups.FirstChild();
nsIFrame * prevSib=nsnull;
rv = NS_OK;
while ((NS_SUCCEEDED(rv)) && (nsnull!=childFrame))
{
if (childFrame==colGroup)
{
if (nsnull!=prevSib) // colGroup is in the middle of the list, remove it
prevSib->SetNextSibling(colGroupNextSib);
else // colGroup was the first child, so set it's next sib to first child
mColGroups.SetFrames(colGroupNextSib);
aAppendedFrame->SetNextSibling(colGroup); // place colGroup at the end of the list
colGroup->SetNextSibling(nsnull);
break;
}
prevSib=childFrame;
rv = childFrame->GetNextSibling(childFrame);
}
}
}
#endif
InvalidateColumnCache();
//XXX: what we want to do here is determine if the new COL information changes anything about layout
// if not, skip invalidating the first passs
// if so, and we can fix the first pass info
return rv;
}
NS_METHOD nsTableFrame::IR_ColGroupRemoved(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableColGroupFrame * aDeletedFrame)
{
if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_ColGroupRemoved for frame %p\n", aDeletedFrame);
nsresult rv=NS_OK;
PRBool adjustStartingColIndex=PR_FALSE;
PRInt32 startingColIndex=0;
nsIFrame *childFrame=mColGroups.FirstChild();
nsIFrame *prevSib=nsnull;
while ((NS_SUCCEEDED(rv)) && (nsnull!=childFrame))
{
if (childFrame==aDeletedFrame)
{
nsIFrame *deleteFrameNextSib=nsnull;
aDeletedFrame->GetNextSibling(&deleteFrameNextSib);
if (nsnull!=prevSib)
prevSib->SetNextSibling(deleteFrameNextSib);
else
mColGroups.SetFrames(deleteFrameNextSib);
childFrame=deleteFrameNextSib;
if (nsnull==childFrame)
break;
adjustStartingColIndex=PR_TRUE; // now that we've removed aDeletedFrame, start adjusting subsequent col groups' starting col index
}
const nsStyleDisplay *display;
childFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == display->mDisplay)
{
if (PR_FALSE==adjustStartingColIndex) // we haven't gotten to aDeletedFrame yet
startingColIndex += ((nsTableColGroupFrame *)childFrame)->GetColumnCount();
else // we've removed aDeletedFrame, now adjust the starting col index of all subsequent col groups
startingColIndex += ((nsTableColGroupFrame *)childFrame)->SetStartColumnIndex(startingColIndex);
}
prevSib=childFrame;
rv = childFrame->GetNextSibling(&childFrame);
}
InvalidateColumnCache();
//XXX: what we want to do here is determine if the new COL information changes anything about layout
// if not, skip invalidating the first passs
// if so, and we can fix the first pass info
return rv;
}
NS_METHOD nsTableFrame::IR_StyleChanged(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus)
{
if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_StyleChanged for frame %p\n", this);
nsresult rv = NS_OK;
// we presume that all the easy optimizations were done in the nsHTMLStyleSheet before we were called here
// XXX: we can optimize this when we know which style attribute changed
// if something like border changes, we need to do pass1 again
// but if something like width changes from 100 to 200, we just need to do pass2
InvalidateFirstPassCache();
return rv;
}
NS_METHOD nsTableFrame::IR_RowGroupInserted(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableRowGroupFrame * aInsertedFrame,
PRBool aReplace)
{
if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_RowGroupInserted for frame %p\n", aInsertedFrame);
nsresult rv = AddFrame(aReflowState.reflowState, aInsertedFrame);
if (NS_FAILED(rv))
return rv;
// do a pass-1 layout of all the cells in all the rows of the rowgroup
rv = ResizeReflowPass1(aPresContext, aDesiredSize, aReflowState.reflowState, aStatus,
aInsertedFrame, eReflowReason_Initial, PR_FALSE);
if (NS_FAILED(rv))
return rv;
InvalidateCellMap();
InvalidateColumnCache();
return rv;
}
// since we know we're doing an append here, we can optimize
NS_METHOD nsTableFrame::IR_RowGroupAppended(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableRowGroupFrame * aAppendedFrame)
{
if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_RowGroupAppended for frame %p\n", aAppendedFrame);
// hook aAppendedFrame into the child list
nsresult rv = AddFrame(aReflowState.reflowState, aAppendedFrame);
if (NS_FAILED(rv))
return rv;
// account for the cells in the rows that are children of aAppendedFrame
// this will add the content of the rowgroup to the cell map
rv = DidAppendRowGroup(aAppendedFrame);
if (NS_FAILED(rv))
return rv;
// do a pass-1 layout of all the cells in all the rows of the rowgroup
rv = ResizeReflowPass1(aPresContext, aDesiredSize, aReflowState.reflowState, aStatus,
aAppendedFrame, eReflowReason_Initial, PR_TRUE);
if (NS_FAILED(rv))
return rv;
// if we've added any columns, we need to rebuild the column cache
// XXX: it would be nice to have a mechanism to just extend the column cache, rather than rebuild it completely
InvalidateColumnCache();
// if any column widths have to change due to this, rebalance column widths
//XXX need to calculate this, but for now just do it
InvalidateColumnWidths();
return rv;
}
NS_METHOD nsTableFrame::IR_RowGroupRemoved(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus,
nsTableRowGroupFrame * aDeletedFrame)
{
if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_RowGroupRemoved for frame %p\n", aDeletedFrame);
nsresult rv = mFrames.DeleteFrame(aPresContext, aDeletedFrame);
InvalidateCellMap();
InvalidateColumnCache();
// if any column widths have to change due to this, rebalance column widths
//XXX need to calculate this, but for now just do it
InvalidateColumnWidths();
return rv;
}
NS_METHOD nsTableFrame::IR_TargetIsChild(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus,
nsIFrame * aNextFrame)
{
nsresult rv;
if (PR_TRUE==gsDebugIR) printf("\nTIF IR: IR_TargetIsChild\n");
// Remember the old rect
nsRect oldKidRect;
aNextFrame->GetRect(oldKidRect);
// Pass along the reflow command
nsHTMLReflowMetrics desiredSize(nsnull);
// XXX Correctly compute the available space...
nsSize availSpace(aReflowState.reflowState.availableWidth, aReflowState.reflowState.availableHeight);
nsHTMLReflowState kidReflowState(aPresContext, aReflowState.reflowState,
aNextFrame, availSpace);
rv = ReflowChild(aNextFrame, aPresContext, desiredSize, kidReflowState, aStatus);
// Resize the row group frame
nsRect kidRect;
aNextFrame->GetRect(kidRect);
aNextFrame->SizeTo(desiredSize.width, desiredSize.height);
#if 1
// XXX For the time being just fall through and treat it like a
// pass 2 reflow...
// calling intialize here resets all the cached info based on new table content
InvalidateColumnWidths();
#else
// XXX Hack...
AdjustSiblingsAfterReflow(&aPresContext, aReflowState, aNextFrame, desiredSize.height -
oldKidRect.height);
aDesiredSize.width = mRect.width;
aDesiredSize.height = state.y + myBorderPadding.top + myBorderPadding.bottom;
return NS_OK;
#endif
return rv;
}
nscoord nsTableFrame::ComputeDesiredWidth(const nsHTMLReflowState& aReflowState) const
{
nscoord desiredWidth=aReflowState.availableWidth;
// this is the biggest hack in the world. But there's no other rational way to handle nested percent tables
const nsStylePosition* position;
PRBool isNested=IsNested(aReflowState, position);
if((eReflowReason_Initial==aReflowState.reason) &&
(PR_TRUE==isNested) && (eStyleUnit_Percent==position->mWidth.GetUnit()))
{
nsITableLayoutStrategy* tableLayoutStrategy = mTableLayoutStrategy;
if (mPrevInFlow) {
// Get the table layout strategy from the first-in-flow
nsTableFrame* table = (nsTableFrame*)GetFirstInFlow();
tableLayoutStrategy = table->mTableLayoutStrategy;
}
desiredWidth = tableLayoutStrategy->GetTableMaxWidth();
}
return desiredWidth;
}
// Position and size aKidFrame and update our reflow state. The origin of
// aKidRect is relative to the upper-left origin of our frame
void nsTableFrame::PlaceChild(nsIPresContext& aPresContext,
InnerTableReflowState& aReflowState,
nsIFrame* aKidFrame,
const nsRect& aKidRect,
nsSize* aMaxElementSize,
nsSize& aKidMaxElementSize)
{
if (PR_TRUE==gsDebug)
printf ("table: placing row group at %d, %d, %d, %d\n",
aKidRect.x, aKidRect.y, aKidRect.width, aKidRect.height);
// Place and size the child
aKidFrame->SetRect(aKidRect);
// Adjust the running y-offset
aReflowState.y += aKidRect.height;
// If our height is constrained, then update the available height
if (PR_FALSE == aReflowState.unconstrainedHeight) {
aReflowState.availSize.height -= aKidRect.height;
}
// If this is a footer row group, remember it
const nsStyleDisplay *childDisplay;
aKidFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
// We only allow a single footer frame, and the footer frame must occur before
// any body section row groups
if ((NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == childDisplay->mDisplay) &&
!aReflowState.footerFrame && !aReflowState.firstBodySection)
{
aReflowState.footerFrame = aKidFrame;
}
else if (aReflowState.footerFrame)
{
// Place the row group frame
nsSize footerSize;
nsPoint origin;
aKidFrame->GetOrigin(origin);
aReflowState.footerFrame->GetSize(footerSize);
origin.y -= footerSize.height;
aKidFrame->MoveTo(origin.x, origin.y);
// Move the footer below the body row group frame
aReflowState.footerFrame->GetOrigin(origin);
origin.y += aKidRect.height;
aReflowState.footerFrame->MoveTo(origin.x, origin.y);
}
//XXX: this should call into layout strategy to get the width field
if (nsnull != aMaxElementSize)
{
const nsStyleSpacing* tableSpacing;
GetStyleData(eStyleStruct_Spacing , ((const nsStyleStruct *&)tableSpacing));
nsMargin borderPadding;
GetTableBorder (borderPadding); // gets the max border thickness for each edge
nsMargin padding;
tableSpacing->GetPadding(padding);
borderPadding += padding;
nscoord cellSpacing = GetCellSpacingX();
nscoord kidWidth = aKidMaxElementSize.width + borderPadding.left + borderPadding.right + cellSpacing*2;
aMaxElementSize->width = PR_MAX(aMaxElementSize->width, kidWidth);
aMaxElementSize->height += aKidMaxElementSize.height;
if (gsDebug)
printf("%p placeChild set MES->width to %d\n",
this, aMaxElementSize->width);
}
}
/**
* Reflow the frames we've already created
*
* @param aPresContext presentation context to use
* @param aReflowState current inline state
* @return true if we successfully reflowed all the mapped children and false
* otherwise, e.g. we pushed children to the next in flow
*/
NS_METHOD nsTableFrame::ReflowMappedChildren(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus)
{
NS_PRECONDITION(mFrames.NotEmpty(), "no children");
PRInt32 childCount = 0;
nsIFrame* prevKidFrame = nsnull;
nsSize kidMaxElementSize(0,0);
nsSize* pKidMaxElementSize = (nsnull != aDesiredSize.maxElementSize) ? &kidMaxElementSize : nsnull;
nsresult rv = NS_OK;
nsReflowReason reason;
if (PR_FALSE==RequiresPass1Layout())
{
reason = aReflowState.reflowState.reason;
if (eReflowReason_Incremental==reason)
reason = eReflowReason_Resize;
}
else
reason = eReflowReason_Resize;
// this never passes reflows down to colgroups
for (nsIFrame* kidFrame = mFrames.FirstChild(); nsnull != kidFrame; )
{
nsSize kidAvailSize(aReflowState.availSize);
nsHTMLReflowMetrics desiredSize(pKidMaxElementSize);
desiredSize.width=desiredSize.height=desiredSize.ascent=desiredSize.descent=0;
const nsStyleDisplay *childDisplay;
kidFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (PR_TRUE==IsRowGroup(childDisplay->mDisplay))
{
// Keep track of the first body section row group
if (nsnull == aReflowState.firstBodySection) {
if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == childDisplay->mDisplay) {
aReflowState.firstBodySection = kidFrame;
}
}
nsMargin borderPadding;
GetTableBorderForRowGroup(GetRowGroupFrameFor(kidFrame, childDisplay), borderPadding);
const nsStyleSpacing* tableSpacing;
GetStyleData(eStyleStruct_Spacing, ((const nsStyleStruct *&)tableSpacing));
nsMargin padding;
tableSpacing->GetPadding(padding);
borderPadding += padding;
// Reflow the child into the available space
nsHTMLReflowState kidReflowState(aPresContext, aReflowState.reflowState,
kidFrame, kidAvailSize, reason);
if (aReflowState.firstBodySection && (kidFrame != aReflowState.firstBodySection)) {
// If this isn't the first row group frame or the header or footer, then
// we can't be at the top of the page anymore...
kidReflowState.isTopOfPage = PR_FALSE;
}
nscoord x = borderPadding.left;
nscoord y = borderPadding.top + aReflowState.y;
if (PR_TRUE==gsDebugIR) printf("\nTIF IR: Reflow Pass 2 of frame %p with reason=%d\n", kidFrame, reason);
if (RowGroupsShouldBeConstrained()) {
// Only applies to the tree widget.
nscoord tableSpecifiedHeight;
GetTableSpecifiedHeight(tableSpecifiedHeight, kidReflowState);
if (tableSpecifiedHeight != -1) {
kidReflowState.availableHeight = tableSpecifiedHeight - y;
if (kidReflowState.availableHeight < 0)
kidReflowState.availableHeight = 0;
}
}
rv = ReflowChild(kidFrame, aPresContext, desiredSize, kidReflowState, aStatus);
// Did the child fit?
if (desiredSize.height > kidAvailSize.height) {
if (aReflowState.firstBodySection && (kidFrame != aReflowState.firstBodySection)) {
// The child is too tall to fit at all in the available space, and it's
// not a header/footer or our first row group frame
PushChildren(kidFrame, prevKidFrame);
aStatus = NS_FRAME_NOT_COMPLETE;
break;
}
}
// Place the child
nsRect kidRect (x, y, desiredSize.width, desiredSize.height);
if (PR_TRUE==IsRowGroup(childDisplay->mDisplay))
{
// we don't want to adjust the maxElementSize if this is an initial reflow
// it was set by the TableLayoutStrategy and shouldn't be changed.
nsSize *requestedMaxElementSize = nsnull;
if (eReflowReason_Initial != aReflowState.reflowState.reason)
requestedMaxElementSize = aDesiredSize.maxElementSize;
PlaceChild(aPresContext, aReflowState, kidFrame, kidRect,
requestedMaxElementSize, kidMaxElementSize);
}
childCount++;
// Remember where we just were in case we end up pushing children
prevKidFrame = kidFrame;
// Special handling for incomplete children
if (NS_FRAME_IS_NOT_COMPLETE(aStatus)) {
nsIFrame* kidNextInFlow;
kidFrame->GetNextInFlow(&kidNextInFlow);
if (nsnull == kidNextInFlow) {
// The child doesn't have a next-in-flow so create a continuing
// frame. This hooks the child into the flow
nsIFrame* continuingFrame;
nsIPresShell* presShell;
nsIStyleSet* styleSet;
aPresContext.GetShell(&presShell);
presShell->GetStyleSet(&styleSet);
NS_RELEASE(presShell);
styleSet->CreateContinuingFrame(&aPresContext, kidFrame, this, &continuingFrame);
NS_RELEASE(styleSet);
// Add the continuing frame to the sibling list
nsIFrame* nextSib;
kidFrame->GetNextSibling(&nextSib);
continuingFrame->SetNextSibling(nextSib);
kidFrame->SetNextSibling(continuingFrame);
}
// We've used up all of our available space so push the remaining
// children to the next-in-flow
nsIFrame* nextSibling;
kidFrame->GetNextSibling(&nextSibling);
if (nsnull != nextSibling) {
PushChildren(nextSibling, kidFrame);
}
break;
}
}
else
{// it's an unknown frame type, give it a generic reflow and ignore the results
nsHTMLReflowState kidReflowState(aPresContext,
aReflowState.reflowState, kidFrame,
nsSize(0,0), eReflowReason_Resize);
nsHTMLReflowMetrics unusedDesiredSize(nsnull);
if (PR_TRUE==gsDebug) printf("\nTIF : Reflow Pass 2 of unknown frame %p of type %d with reason=%d\n",
kidFrame, childDisplay->mDisplay, eReflowReason_Resize);
ReflowChild(kidFrame, aPresContext, unusedDesiredSize, kidReflowState, aStatus);
}
// Get the next child
kidFrame->GetNextSibling(&kidFrame);
}
// Update the child count
return rv;
}
/**
* Try and pull-up frames from our next-in-flow
*
* @param aPresContext presentation context to use
* @param aReflowState current inline state
* @return true if we successfully pulled-up all the children and false
* otherwise, e.g. child didn't fit
*/
NS_METHOD nsTableFrame::PullUpChildren(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
InnerTableReflowState& aReflowState,
nsReflowStatus& aStatus)
{
nsTableFrame* nextInFlow = (nsTableFrame*)mNextInFlow;
nsSize kidMaxElementSize(0,0);
nsSize* pKidMaxElementSize = (nsnull != aDesiredSize.maxElementSize) ? &kidMaxElementSize : nsnull;
nsIFrame* prevKidFrame = mFrames.LastChild();
nsresult rv = NS_OK;
while (nsnull != nextInFlow) {
nsHTMLReflowMetrics kidSize(pKidMaxElementSize);
kidSize.width=kidSize.height=kidSize.ascent=kidSize.descent=0;
// XXX change to use nsFrameList::PullFrame
// Get the next child
nsIFrame* kidFrame = nextInFlow->mFrames.FirstChild();
// Any more child frames?
if (nsnull == kidFrame) {
// No. Any frames on its overflow list?
if (nextInFlow->mOverflowFrames.NotEmpty()) {
// Move the overflow list to become the child list
nextInFlow->mFrames.AppendFrames(nsnull, nextInFlow->mOverflowFrames);
kidFrame = nextInFlow->mFrames.FirstChild();
} else {
// We've pulled up all the children, so move to the next-in-flow.
nextInFlow->GetNextInFlow((nsIFrame**)&nextInFlow);
continue;
}
}
// See if the child fits in the available space. If it fits or
// it's splittable then reflow it. The reason we can't just move
// it is that we still need ascent/descent information
nsSize kidFrameSize(0,0);
nsSplittableType kidIsSplittable;
kidFrame->GetSize(kidFrameSize);
kidFrame->IsSplittable(kidIsSplittable);
if ((kidFrameSize.height > aReflowState.availSize.height) &&
NS_FRAME_IS_NOT_SPLITTABLE(kidIsSplittable)) {
//XXX: Troy
aStatus = NS_FRAME_NOT_COMPLETE;
break;
}
nsHTMLReflowState kidReflowState(aPresContext, aReflowState.reflowState,
kidFrame, aReflowState.availSize,
eReflowReason_Resize);
rv = ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, aStatus);
// Did the child fit?
if ((kidSize.height > aReflowState.availSize.height) && mFrames.NotEmpty()) {
// The child is too wide to fit in the available space, and it's
// not our first child
//XXX: Troy
aStatus = NS_FRAME_NOT_COMPLETE;
break;
}
nsRect kidRect (0, 0, kidSize.width, kidSize.height);
kidRect.y += aReflowState.y;
const nsStyleDisplay *childDisplay;
kidFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (PR_TRUE==IsRowGroup(childDisplay->mDisplay))
{
PlaceChild(aPresContext, aReflowState, kidFrame, kidRect, aDesiredSize.maxElementSize, *pKidMaxElementSize);
}
// Remove the frame from its current parent
nextInFlow->mFrames.RemoveFirstChild();
// Link the frame into our list of children
kidFrame->SetParent(this);
if (nsnull == prevKidFrame) {
mFrames.SetFrames(kidFrame);
} else {
prevKidFrame->SetNextSibling(kidFrame);
}
kidFrame->SetNextSibling(nsnull);
// Remember where we just were in case we end up pushing children
prevKidFrame = kidFrame;
if (NS_FRAME_IS_NOT_COMPLETE(aStatus)) {
// No the child isn't complete
nsIFrame* kidNextInFlow;
kidFrame->GetNextInFlow(&kidNextInFlow);
if (nsnull == kidNextInFlow) {
// The child doesn't have a next-in-flow so create a
// continuing frame. The creation appends it to the flow and
// prepares it for reflow.
nsIFrame* continuingFrame;
nsIPresShell* presShell;
nsIStyleSet* styleSet;
aPresContext.GetShell(&presShell);
presShell->GetStyleSet(&styleSet);
NS_RELEASE(presShell);
styleSet->CreateContinuingFrame(&aPresContext, kidFrame, this, &continuingFrame);
NS_RELEASE(styleSet);
// Add the continuing frame to our sibling list and then push
// it to the next-in-flow. This ensures the next-in-flow's
// content offsets and child count are set properly. Note that
// we can safely assume that the continuation is complete so
// we pass PR_TRUE into PushChidren
kidFrame->SetNextSibling(continuingFrame);
PushChildren(continuingFrame, kidFrame);
}
break;
}
}
return rv;
}
/**
Now I've got all the cells laid out in an infinite space.
For each column, use the min size for each cell in that column
along with the attributes of the table, column group, and column
to assign widths to each column.
*/
// use the cell map to determine which cell is in which column.
void nsTableFrame::BalanceColumnWidths(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState,
const nsSize& aMaxSize,
nsSize* aMaxElementSize)
{
NS_ASSERTION(nsnull==mPrevInFlow, "never ever call me on a continuing frame!");
NS_ASSERTION(nsnull!=mCellMap, "never ever call me until the cell map is built!");
NS_ASSERTION(nsnull!=mColumnWidths, "never ever call me until the col widths array is built!");
PRInt32 numCols = mCellMap->GetColCount();
if (numCols>mColumnWidthsLength)
{
PRInt32 priorColumnWidthsLength=mColumnWidthsLength;
while (numCols>mColumnWidthsLength)
mColumnWidthsLength += kColumnWidthIncrement;
PRInt32 * newColumnWidthsArray = new PRInt32[mColumnWidthsLength];
nsCRT::memset (newColumnWidthsArray, 0, mColumnWidthsLength*sizeof(PRInt32));
nsCRT::memcpy (newColumnWidthsArray, mColumnWidths, priorColumnWidthsLength*sizeof(PRInt32));
delete [] mColumnWidths;
mColumnWidths = newColumnWidthsArray;
}
// need to figure out the overall table width constraint
// default case, get 100% of available space
PRInt32 maxWidth = aMaxSize.width;
const nsStylePosition* position =
(const nsStylePosition*)mStyleContext->GetStyleData(eStyleStruct_Position);
if (eStyleUnit_Coord==position->mWidth.GetUnit())
{
nscoord coordWidth=0;
coordWidth = position->mWidth.GetCoordValue();
// NAV4 compatibility: 0-coord-width == auto-width
if (0!=coordWidth)
maxWidth = coordWidth;
}
if (0>maxWidth) // nonsense style specification
maxWidth = 0;
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
printf ("%p: maxWidth=%d from aMaxSize=%d,%d\n",
this, maxWidth, aMaxSize.width, aMaxSize.height);
// based on the compatibility mode, create a table layout strategy
if (nsnull == mTableLayoutStrategy) {
nsCompatibility mode;
aPresContext.GetCompatibilityMode(&mode);
if (PR_FALSE==RequiresPass1Layout())
mTableLayoutStrategy = new FixedTableLayoutStrategy(this);
else
mTableLayoutStrategy = new BasicTableLayoutStrategy(this, eCompatibility_NavQuirks == mode);
mTableLayoutStrategy->Initialize(aMaxElementSize, GetColCount(), aReflowState.computedWidth);
mColumnWidthsValid=PR_TRUE;
}
// fixed-layout tables need to reinitialize the layout strategy. When there are scroll bars
// reflow gets called twice and the 2nd time has the correct space available.
else if (!RequiresPass1Layout()) {
mTableLayoutStrategy->Initialize(aMaxElementSize, GetColCount(), aReflowState.computedWidth);
}
mTableLayoutStrategy->BalanceColumnWidths(mStyleContext, aReflowState, maxWidth);
mColumnWidthsSet=PR_TRUE;
// if collapsing borders, compute the top and bottom edges now that we have column widths
const nsStyleTable* tableStyle =
(const nsStyleTable*)mStyleContext->GetStyleData(eStyleStruct_Table);
if (NS_STYLE_BORDER_COLLAPSE==tableStyle->mBorderCollapse)
{
ComputeHorizontalCollapsingBorders(aPresContext, 0, mCellMap->GetRowCount()-1);
}
}
/**
sum the width of each column
add in table insets
set rect
*/
void nsTableFrame::SetTableWidth(nsIPresContext& aPresContext)
{
NS_ASSERTION(nsnull==mPrevInFlow, "never ever call me on a continuing frame!");
NS_ASSERTION(nsnull!=mCellMap, "never ever call me until the cell map is built!");
nscoord cellSpacing = GetCellSpacingX();
if (gsDebug==PR_TRUE)
printf ("SetTableWidth with cellSpacing = %d ", cellSpacing);
PRInt32 tableWidth = cellSpacing;
PRInt32 numCols = GetColCount();
for (PRInt32 colIndex = 0; colIndex<numCols; colIndex++)
{
nscoord totalColWidth = mColumnWidths[colIndex];
totalColWidth += cellSpacing;
if (gsDebug==PR_TRUE)
printf (" += %d ", totalColWidth);
tableWidth += totalColWidth;
}
// Compute the insets (sum of border and padding)
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
nsMargin borderPadding;
GetTableBorder (borderPadding); // this gets the max border value at every edge
nsMargin padding;
spacing->GetPadding(padding);
borderPadding += padding;
nscoord rightInset = borderPadding.right;
nscoord leftInset = borderPadding.left;
tableWidth += (leftInset + rightInset);
nsRect tableSize = mRect;
tableSize.width = tableWidth;
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
{
printf ("%p: setting table rect to %d, %d after adding insets %d, %d\n",
this, tableSize.width, tableSize.height, rightInset, leftInset);
}
// account for scroll bars. XXX needs optimization/caching
if (mHasScrollableRowGroup) {
float sbWidth, sbHeight;
nsCOMPtr<nsIDeviceContext> dc;
aPresContext.GetDeviceContext(getter_AddRefs(dc));
dc->GetScrollBarDimensions(sbWidth, sbHeight);
tableSize.width += NSToCoordRound(sbWidth);
}
SetRect(tableSize);
}
/* get the height of this table's container. ignore all containers who have unconstrained height.
* take into account the possibility that this table is nested.
* if nested within an auto-height table, this method returns 0.
* this method may also return NS_UNCONSTRAINEDSIZE, meaning no container provided any height constraint
*/
nscoord nsTableFrame::GetEffectiveContainerHeight(const nsHTMLReflowState& aReflowState)
{
nscoord result=-1;
const nsHTMLReflowState* rs = &aReflowState;
while (nsnull!=rs)
{
const nsStyleDisplay *display;
rs->frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE==display->mDisplay)
{
const nsStylePosition *position;
rs->frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)position);
nsStyleUnit unit = position->mHeight.GetUnit();
if (eStyleUnit_Null==unit || eStyleUnit_Auto==unit)
{
result = 0;
break;
}
}
if (NS_AUTOHEIGHT != rs->computedHeight)
{
result = rs->computedHeight;
break;
}
// XXX: evil cast!
rs = (nsHTMLReflowState *)(rs->parentReflowState);
}
NS_ASSERTION(-1!=result, "bad state: no constrained height in reflow chain");
return result;
}
/**
get the table height attribute
if it is auto, table height = SUM(height of rowgroups)
else if (resolved table height attribute > SUM(height of rowgroups))
proportionately distribute extra height to each row
we assume we are passed in the default table height==the sum of the heights of the table's rowgroups
in aDesiredSize.height.
*/
void nsTableFrame::DistributeSpaceToCells(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState,
nsIFrame* aRowGroupFrame)
{
// now that all of the rows have been resized, resize the cells
nsTableRowGroupFrame* rowGroupFrame = (nsTableRowGroupFrame*)aRowGroupFrame;
nsIFrame * rowFrame = rowGroupFrame->GetFirstFrame();
while (nsnull!=rowFrame) {
const nsStyleDisplay *rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW == rowDisplay->mDisplay) {
((nsTableRowFrame *)rowFrame)->DidResize(aPresContext, aReflowState);
}
// The calling function, DistributeSpaceToRows, takes care of the recursive row
// group descent, which is why there's no NS_STYLE_DISPLAY_TABLE_ROW_GROUP case
// here.
rowGroupFrame->GetNextFrame(rowFrame, &rowFrame);
}
}
void nsTableFrame::DistributeSpaceToRows(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState,
nsIFrame* aRowGroupFrame, const nscoord& aSumOfRowHeights,
const nscoord& aExcess, const nsStyleTable* aTableStyle,
nscoord& aExcessForRowGroup,
nscoord& aRowGroupYPos)
{
// the rows in rowGroupFrame need to be expanded by rowHeightDelta[i]
// and the rowgroup itself needs to be expanded by SUM(row height deltas)
nsTableRowGroupFrame* rowGroupFrame = (nsTableRowGroupFrame*)aRowGroupFrame;
nsIFrame * rowFrame = rowGroupFrame->GetFirstFrame();
nscoord y = 0;
while (nsnull!=rowFrame)
{
const nsStyleDisplay *rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == rowDisplay->mDisplay) {
DistributeSpaceToRows(aPresContext, aReflowState, rowFrame, aSumOfRowHeights,
aExcess, aTableStyle, aExcessForRowGroup, y);
}
else if (NS_STYLE_DISPLAY_TABLE_ROW == rowDisplay->mDisplay)
{ // the row needs to be expanded by the proportion this row contributed to the original height
nsRect rowRect;
rowFrame->GetRect(rowRect);
float percent = ((float)(rowRect.height)) / ((float)(aSumOfRowHeights));
nscoord excessForRow = NSToCoordRound((float)aExcess*percent);
if (rowGroupFrame->RowsDesireExcessSpace()) {
nsRect newRowRect(rowRect.x, y, rowRect.width, excessForRow+rowRect.height);
rowFrame->SetRect(newRowRect);
if (NS_STYLE_BORDER_COLLAPSE==aTableStyle->mBorderCollapse)
{
nsBorderEdge *border = (nsBorderEdge *)
(mBorderEdges.mEdges[NS_SIDE_LEFT].ElementAt(((nsTableRowFrame*)rowFrame)->GetRowIndex()));
border->mLength=newRowRect.height;
border = (nsBorderEdge *)
(mBorderEdges.mEdges[NS_SIDE_RIGHT].ElementAt(((nsTableRowFrame*)rowFrame)->GetRowIndex()));
border->mLength=newRowRect.height;
}
// better if this were part of an overloaded row::SetRect
y += excessForRow+rowRect.height;
}
aExcessForRowGroup += excessForRow;
}
else
{
nsRect rowRect;
rowFrame->GetRect(rowRect);
y += rowRect.height;
}
rowGroupFrame->GetNextFrame(rowFrame, &rowFrame);
}
nsRect rowGroupRect;
aRowGroupFrame->GetRect(rowGroupRect);
if (rowGroupFrame->RowGroupDesiresExcessSpace()) {
nsRect newRowGroupRect(rowGroupRect.x, aRowGroupYPos, rowGroupRect.width, aExcessForRowGroup+rowGroupRect.height);
aRowGroupFrame->SetRect(newRowGroupRect);
aRowGroupYPos += aExcessForRowGroup + rowGroupRect.height;
}
else aRowGroupYPos += rowGroupRect.height;
DistributeSpaceToCells(aPresContext, aReflowState, aRowGroupFrame);
}
NS_IMETHODIMP nsTableFrame::GetTableSpecifiedHeight(nscoord& aResult, const nsHTMLReflowState& aReflowState)
{
const nsStylePosition* tablePosition;
GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)tablePosition);
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
nscoord tableSpecifiedHeight=-1;
if (eStyleUnit_Coord == tablePosition->mHeight.GetUnit())
tableSpecifiedHeight = tablePosition->mHeight.GetCoordValue();
else if (eStyleUnit_Percent == tablePosition->mHeight.GetUnit())
{
float percent = tablePosition->mHeight.GetPercentValue();
nscoord parentHeight = GetEffectiveContainerHeight(aReflowState);
if (NS_UNCONSTRAINEDSIZE!=parentHeight && 0!=parentHeight)
tableSpecifiedHeight = NSToCoordRound((float)parentHeight * percent);
}
aResult = tableSpecifiedHeight;
return NS_OK;
}
nscoord nsTableFrame::ComputeDesiredHeight(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState,
nscoord aDefaultHeight)
{
NS_ASSERTION(nsnull!=mCellMap, "never ever call me until the cell map is built!");
nscoord result = aDefaultHeight;
const nsStylePosition* tablePosition;
GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)tablePosition);
if (eStyleUnit_Auto == tablePosition->mHeight.GetUnit())
return result; // auto width tables are sized by the row heights, which we already have
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
nscoord tableSpecifiedHeight=-1;
if (eStyleUnit_Coord == tablePosition->mHeight.GetUnit())
tableSpecifiedHeight = tablePosition->mHeight.GetCoordValue();
else if (eStyleUnit_Percent == tablePosition->mHeight.GetUnit())
{
float percent = tablePosition->mHeight.GetPercentValue();
nscoord parentHeight = GetEffectiveContainerHeight(aReflowState);
if (NS_UNCONSTRAINEDSIZE!=parentHeight && 0!=parentHeight)
tableSpecifiedHeight = NSToCoordRound((float)parentHeight * percent);
}
if (-1!=tableSpecifiedHeight)
{
if (tableSpecifiedHeight>aDefaultHeight)
{ // proportionately distribute the excess height to each row
result = tableSpecifiedHeight;
nscoord excess = tableSpecifiedHeight-aDefaultHeight;
nscoord sumOfRowHeights=0;
nsIFrame * rowGroupFrame=mFrames.FirstChild();
while (nsnull!=rowGroupFrame)
{
const nsStyleDisplay *rowGroupDisplay;
rowGroupFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowGroupDisplay));
if (PR_TRUE==IsRowGroup(rowGroupDisplay->mDisplay) &&
((nsTableRowGroupFrame*)rowGroupFrame)->RowGroupReceivesExcessSpace())
{
((nsTableRowGroupFrame*)rowGroupFrame)->GetHeightOfRows(sumOfRowHeights);
}
rowGroupFrame->GetNextSibling(&rowGroupFrame);
}
rowGroupFrame=mFrames.FirstChild();
nscoord rowGroupYPos = 0;
while (nsnull!=rowGroupFrame)
{
const nsStyleDisplay *rowGroupDisplay;
rowGroupFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowGroupDisplay));
if (PR_TRUE==IsRowGroup(rowGroupDisplay->mDisplay)) {
if (((nsTableRowGroupFrame*)rowGroupFrame)->RowGroupReceivesExcessSpace())
{
nscoord excessForGroup = 0;
DistributeSpaceToRows(aPresContext, aReflowState, rowGroupFrame, sumOfRowHeights,
excess, tableStyle, excessForGroup, rowGroupYPos);
}
else
{
nsRect rowGroupRect;
rowGroupFrame->GetRect(rowGroupRect);
rowGroupYPos += rowGroupRect.height;
}
}
rowGroupFrame->GetNextSibling(&rowGroupFrame);
}
}
}
return result;
}
void nsTableFrame::AdjustColumnsForCOLSAttribute()
{
nsCellMap *cellMap = GetCellMap();
NS_ASSERTION(nsnull!=cellMap, "bad cell map");
// any specified-width column turns off COLS attribute
nsStyleTable* tableStyle = (nsStyleTable *)mStyleContext->GetMutableStyleData(eStyleStruct_Table);
if (tableStyle->mCols != NS_STYLE_TABLE_COLS_NONE)
{
PRInt32 numCols = cellMap->GetColCount();
PRInt32 numRows = cellMap->GetRowCount();
for (PRInt32 rowIndex=0; rowIndex<numRows; rowIndex++)
{
for (PRInt32 colIndex=0; colIndex<numCols; colIndex++)
{
nsTableCellFrame *cellFrame = cellMap->GetCellFrameAt(rowIndex, colIndex);
// get the cell style info
const nsStylePosition* cellPosition;
if (nsnull!=cellFrame)
{
cellFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)cellPosition);
if ((eStyleUnit_Coord == cellPosition->mWidth.GetUnit()) ||
(eStyleUnit_Percent==cellPosition->mWidth.GetUnit()))
{
tableStyle->mCols = NS_STYLE_TABLE_COLS_NONE;
break;
}
}
}
}
}
}
/*
The rule is: use whatever width is greatest among those specified widths
that span a column. It doesn't matter what comes first, just what is biggest.
Specified widths (when colspan==1) and span widths need to be stored separately,
because specified widths tell us what proportion of the span width to give to each column
(in their absence, we use the desired width of the cell.)
*/
NS_METHOD
nsTableFrame::SetColumnStyleFromCell(nsIPresContext & aPresContext,
nsTableCellFrame* aCellFrame,
nsTableRowFrame * aRowFrame)
{
// if the cell has a colspan, the width is used provisionally, divided equally among
// the spanned columns until the table layout strategy computes the real column width.
if (PR_TRUE==gsDebug) printf("TIF SetCSFromCell: cell %p in row %p\n", aCellFrame, aRowFrame);
if ((nsnull!=aCellFrame) && (nsnull!=aRowFrame))
{
// get the cell style info
const nsStylePosition* cellPosition;
aCellFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)cellPosition);
if ((eStyleUnit_Coord == cellPosition->mWidth.GetUnit()) ||
(eStyleUnit_Percent==cellPosition->mWidth.GetUnit())) {
// compute the width per column spanned
PRInt32 baseColIndex;
aCellFrame->GetColIndex(baseColIndex);
PRInt32 colSpan = GetEffectiveColSpan(baseColIndex, aCellFrame);
if (PR_TRUE==gsDebug)
printf("TIF SetCSFromCell: for col %d with colspan %d\n",baseColIndex, colSpan);
for (PRInt32 i=0; i<colSpan; i++)
{
// get the appropriate column frame
nsTableColFrame *colFrame;
GetColumnFrame(i+baseColIndex, colFrame);
if (PR_TRUE==gsDebug)
printf("TIF SetCSFromCell: for col %d (%p)\n",i+baseColIndex, colFrame);
// if the colspan is 1 and we already have a cell that set this column's width
// then ignore this width attribute
if ((1==colSpan) && (nsTableColFrame::eWIDTH_SOURCE_CELL == colFrame->GetWidthSource()))
{
if (PR_TRUE==gsDebug)
printf("TIF SetCSFromCell: width already set from a cell with colspan=1, no-op this cell's width attr\n");
break;
}
// get the column style
nsIStyleContext *colSC;
colFrame->GetStyleContext(&colSC);
nsStylePosition* colPosition = (nsStylePosition*) colSC->GetMutableStyleData(eStyleStruct_Position);
// if colSpan==1, then we can just set the column width
if (1==colSpan)
{ // set the column width attribute
if (eStyleUnit_Coord == cellPosition->mWidth.GetUnit())
{
nscoord width = cellPosition->mWidth.GetCoordValue();
colPosition->mWidth.SetCoordValue(width);
if (PR_TRUE==gsDebug)
printf("TIF SetCSFromCell: col fixed width set to %d from cell", width);
}
else
{
float width = cellPosition->mWidth.GetPercentValue();
colPosition->mWidth.SetPercentValue(width);
if (PR_TRUE==gsDebug)
printf("TIF SetCSFromCell: col percent width set to %g from cell", width);
}
colFrame->SetWidthSource(nsTableColFrame::eWIDTH_SOURCE_CELL);
}
else // we have a colspan > 1. so we need to set the column table style spanWidth
{ // if the cell is a coord width...
nsStyleTable* colTableStyle = (nsStyleTable*) colSC->GetMutableStyleData(eStyleStruct_Table);
if (eStyleUnit_Coord == cellPosition->mWidth.GetUnit())
{
// set the column width attribute iff this span's contribution to this column
// is greater than any previous information
nscoord cellWidth = cellPosition->mWidth.GetCoordValue();
nscoord widthPerColumn = cellWidth/colSpan;
nscoord widthForThisColumn = widthPerColumn;
if (eStyleUnit_Coord == colTableStyle->mSpanWidth.GetUnit())
widthForThisColumn = PR_MAX(widthForThisColumn, colTableStyle->mSpanWidth.GetCoordValue());
colTableStyle->mSpanWidth.SetCoordValue(widthForThisColumn);
if (PR_TRUE==gsDebug)
printf("TIF SetCSFromCell: col span width set to %d from spanning cell", widthForThisColumn);
}
// else if the cell has a percent width...
else if (eStyleUnit_Percent == cellPosition->mWidth.GetUnit())
{
// set the column width attribute iff this span's contribution to this column
// is greater than any previous information
float cellWidth = cellPosition->mWidth.GetPercentValue();
float percentPerColumn = cellWidth/(float)colSpan;
float percentForThisColumn = percentPerColumn;
if (eStyleUnit_Percent == colTableStyle->mSpanWidth.GetUnit())
percentForThisColumn = PR_MAX(percentForThisColumn, colTableStyle->mSpanWidth.GetPercentValue());
colTableStyle->mSpanWidth.SetPercentValue(percentForThisColumn);
if (PR_TRUE==gsDebug)
printf("TIF SetCSFromCell: col span width set to %d from spanning cell", (nscoord)percentForThisColumn);
}
colFrame->SetWidthSource(nsTableColFrame::eWIDTH_SOURCE_CELL_WITH_SPAN);
}
NS_RELEASE(colSC);
}
}
}
return NS_OK;
}
/* there's an easy way and a hard way. The easy way is to look in our
* cache and pull the frame from there.
* If the cache isn't built yet, then we have to go hunting.
*/
NS_METHOD nsTableFrame::GetColumnFrame(PRInt32 aColIndex, nsTableColFrame *&aColFrame)
{
aColFrame = nsnull; // initialize out parameter
nsCellMap *cellMap = GetCellMap();
if (nsnull!=cellMap)
{ // hooray, we get to do this the easy way because the info is cached
aColFrame = cellMap->GetColumnFrame(aColIndex);
}
else
{ // ah shucks, we have to go hunt for the column frame brute-force style
nsIFrame *childFrame = mColGroups.FirstChild();
for (;;)
{
if (nsnull==childFrame)
{
NS_ASSERTION (PR_FALSE, "scanned the frame hierarchy and no column frame could be found.");
break;
}
PRInt32 colGroupStartingIndex = ((nsTableColGroupFrame *)childFrame)->GetStartColumnIndex();
if (aColIndex >= colGroupStartingIndex)
{ // the cell's col might be in this col group
PRInt32 colCount = ((nsTableColGroupFrame *)childFrame)->GetColumnCount();
if (aColIndex < colGroupStartingIndex + colCount)
{ // yep, we've found it. GetColumnAt gives us the column at the offset colCount, not the absolute colIndex for the whole table
aColFrame = ((nsTableColGroupFrame *)childFrame)->GetColumnAt(colCount);
break;
}
}
childFrame->GetNextSibling(&childFrame);
}
}
NS_POSTCONDITION(nsnull!=aColFrame, "no column frame could be found.");
return NS_OK;
}
PRBool nsTableFrame::IsColumnWidthsSet()
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
return firstInFlow->mColumnWidthsSet;
}
/* We have to go through our child list twice.
* The first time, we scan until we find the first row.
* We set column style from the cells in the first row.
* Then we terminate that loop and start a second pass.
* In the second pass, we build column and cell cache info.
*/
void nsTableFrame::SetColumnStylesFromCells(nsIPresContext& aPresContext, nsIFrame* aRowGroupFrame)
{
nsIFrame *rowFrame;
aRowGroupFrame->FirstChild(nsnull, &rowFrame);
while (nsnull!=rowFrame)
{
const nsStyleDisplay *rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)rowDisplay));
if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == rowDisplay->mDisplay) {
SetColumnStylesFromCells(aPresContext, rowFrame);
}
else if (NS_STYLE_DISPLAY_TABLE_ROW == rowDisplay->mDisplay)
{
nsIFrame *cellFrame;
rowFrame->FirstChild(nsnull, &cellFrame);
while (nsnull!=cellFrame)
{
/* this is the first time we are guaranteed to have both the cell frames
* and the column frames, so it's a good time to
* set the column style from the cell's width attribute (if this is the first row)
*/
const nsStyleDisplay *cellDisplay;
cellFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)cellDisplay));
if (NS_STYLE_DISPLAY_TABLE_CELL == cellDisplay->mDisplay)
SetColumnStyleFromCell(aPresContext, (nsTableCellFrame *)cellFrame, (nsTableRowFrame *)rowFrame);
cellFrame->GetNextSibling(&cellFrame);
}
}
rowFrame->GetNextSibling(&rowFrame);
}
}
void nsTableFrame::BuildColumnCache( nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
NS_ASSERTION(nsnull==mPrevInFlow, "never ever call me on a continuing frame!");
NS_ASSERTION(nsnull!=mCellMap, "never ever call me until the cell map is built!");
PRInt32 colIndex=0;
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
EnsureColumns(aPresContext);
if (nsnull!=mColCache)
{
if (PR_TRUE==gsDebugIR) printf("TIF BCC: clearing column cache and cell map column frame cache.\n");
mCellMap->ClearColumnCache();
delete mColCache;
mColCache = nsnull;
}
mColCache = new ColumnInfoCache(GetColCount());
CacheColFramesInCellMap();
// handle rowgroups
PRBool requiresPass1Layout = RequiresPass1Layout();
nsIFrame * childFrame = mFrames.FirstChild();
while (nsnull!=childFrame)
{ // in this loop, set column style info from cells
const nsStyleDisplay *childDisplay;
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
if (PR_TRUE==IsRowGroup(childDisplay->mDisplay) && requiresPass1Layout)
{ // if it's a row group, get the cells and set the column style if appropriate
SetColumnStylesFromCells(aPresContext, childFrame);
}
childFrame->GetNextSibling(&childFrame);
}
// second time through, set column cache info for each column
// we can't do this until the loop above has set the column style info from the cells
childFrame = mColGroups.FirstChild();
while (nsnull!=childFrame)
{ // for every child, if it's a col group then get the columns
nsTableColFrame *colFrame=nsnull;
childFrame->FirstChild(nsnull, (nsIFrame **)&colFrame);
while (nsnull!=colFrame)
{ // for every column, create an entry in the column cache
// assumes that the col style has been twiddled to account for first cell width attribute
const nsStyleDisplay *colDisplay;
colFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)colDisplay));
if (NS_STYLE_DISPLAY_TABLE_COLUMN == colDisplay->mDisplay)
{
const nsStylePosition* colPosition;
colFrame->GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)colPosition));
PRInt32 repeat = colFrame->GetSpan();
colIndex = colFrame->GetColumnIndex();
for (PRInt32 i=0; i<repeat; i++)
{
mColCache->AddColumnInfo(colPosition->mWidth.GetUnit(), colIndex+i);
}
}
colFrame->GetNextSibling((nsIFrame **)&colFrame);
}
childFrame->GetNextSibling(&childFrame);
}
if (PR_TRUE==gsDebugIR) printf("TIF BCC: mColumnCacheValid=PR_TRUE.\n");
mColumnCacheValid=PR_TRUE;
}
void nsTableFrame::CacheColFramesInCellMap()
{
nsIFrame * childFrame = mColGroups.FirstChild();
while (nsnull!=childFrame)
{ // in this loop, we cache column info
nsTableColFrame *colFrame=nsnull;
childFrame->FirstChild(nsnull, (nsIFrame **)&colFrame);
while (nsnull!=colFrame)
{
PRInt32 colIndex = colFrame->GetColumnIndex();
PRInt32 repeat = colFrame->GetSpan();
for (PRInt32 i=0; i<repeat; i++)
{
nsTableColFrame *cachedColFrame = mCellMap->GetColumnFrame(colIndex+i);
if (nsnull==cachedColFrame)
{
if (gsDebug)
printf("TIF BCB: adding column frame %p\n", colFrame);
mCellMap->AppendColumnFrame(colFrame);
}
colIndex++;
}
colFrame->GetNextSibling((nsIFrame **)&colFrame);
}
childFrame->GetNextSibling(&childFrame);
}
}
void nsTableFrame::InvalidateColumnWidths()
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
firstInFlow->mColumnWidthsValid=PR_FALSE;
if (PR_TRUE==gsDebugIR) printf("TIF: ColWidths invalidated.\n");
}
PRBool nsTableFrame::IsColumnWidthsValid() const
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
return firstInFlow->mColumnWidthsValid;
}
PRBool nsTableFrame::IsFirstPassValid() const
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
return firstInFlow->mFirstPassValid;
}
void nsTableFrame::InvalidateFirstPassCache()
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
firstInFlow->mFirstPassValid=PR_FALSE;
if (PR_TRUE==gsDebugIR) printf("TIF: FirstPass invalidated.\n");
}
PRBool nsTableFrame::IsColumnCacheValid() const
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
return firstInFlow->mColumnCacheValid;
}
void nsTableFrame::InvalidateColumnCache()
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
firstInFlow->mColumnCacheValid=PR_FALSE;
if (PR_TRUE==gsDebugIR) printf("TIF: ColCache invalidated.\n");
}
PRBool nsTableFrame::IsCellMapValid() const
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
return firstInFlow->mCellMapValid;
}
static void InvalidateCellMapForRowGroup(nsIFrame* aRowGroupFrame)
{
nsIFrame *rowFrame;
aRowGroupFrame->FirstChild(nsnull, &rowFrame);
for ( ; nsnull!=rowFrame; rowFrame->GetNextSibling(&rowFrame))
{
const nsStyleDisplay *rowDisplay;
rowFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)rowDisplay);
if (NS_STYLE_DISPLAY_TABLE_ROW==rowDisplay->mDisplay)
{
((nsTableRowFrame *)rowFrame)->ResetInitChildren();
}
else if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP==rowDisplay->mDisplay)
{
InvalidateCellMapForRowGroup(rowFrame);
}
}
}
void nsTableFrame::InvalidateCellMap()
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
firstInFlow->mCellMapValid=PR_FALSE;
// reset the state in each row
nsIFrame *rowGroupFrame=mFrames.FirstChild();
for ( ; nsnull!=rowGroupFrame; rowGroupFrame->GetNextSibling(&rowGroupFrame))
{
const nsStyleDisplay *rowGroupDisplay;
rowGroupFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)rowGroupDisplay);
if (PR_TRUE==IsRowGroup(rowGroupDisplay->mDisplay))
{
InvalidateCellMapForRowGroup(rowGroupFrame);
}
}
if (PR_TRUE==gsDebugIR) printf("TIF: CellMap invalidated.\n");
}
PRInt32 nsTableFrame::GetColumnWidth(PRInt32 aColIndex)
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
PRInt32 result = 0;
if (this!=firstInFlow)
result = firstInFlow->GetColumnWidth(aColIndex);
else
{
NS_ASSERTION(nsnull!=mColumnWidths, "illegal state");
// can't assert on IsColumnWidthsSet because we might want to call this
// while we're in the process of setting column widths, and we don't
// want to complicate IsColumnWidthsSet by making it a multiple state return value
// (like eNotSet, eSetting, eIsSet)
#ifdef NS_DEBUG
NS_ASSERTION(nsnull!=mCellMap, "no cell map");
PRInt32 numCols = mCellMap->GetColCount();
NS_ASSERTION (numCols > aColIndex, "bad arg, col index out of bounds");
#endif
if (nsnull!=mColumnWidths)
result = mColumnWidths[aColIndex];
}
return result;
}
void nsTableFrame::SetColumnWidth(PRInt32 aColIndex, nscoord aWidth)
{
nsTableFrame * firstInFlow = (nsTableFrame *)GetFirstInFlow();
NS_ASSERTION(nsnull!=firstInFlow, "illegal state -- no first in flow");
if (this!=firstInFlow)
firstInFlow->SetColumnWidth(aColIndex, aWidth);
else
{
NS_ASSERTION(nsnull!=mColumnWidths, "illegal state, nsnull mColumnWidths");
NS_ASSERTION(aColIndex<mColumnWidthsLength, "illegal state, aColIndex<mColumnWidthsLength");
if (nsnull!=mColumnWidths && aColIndex<mColumnWidthsLength)
mColumnWidths[aColIndex] = aWidth;
}
}
/**
*
* Update the border style to map to the HTML border style
*
*/
void nsTableFrame::MapHTMLBorderStyle(nsStyleSpacing& aSpacingStyle, nscoord aBorderWidth)
{
nsStyleCoord width;
width.SetCoordValue(aBorderWidth);
aSpacingStyle.mBorder.SetTop(width);
aSpacingStyle.mBorder.SetLeft(width);
aSpacingStyle.mBorder.SetBottom(width);
aSpacingStyle.mBorder.SetRight(width);
aSpacingStyle.SetBorderStyle(NS_SIDE_TOP, NS_STYLE_BORDER_STYLE_BG_OUTSET);
aSpacingStyle.SetBorderStyle(NS_SIDE_LEFT, NS_STYLE_BORDER_STYLE_BG_OUTSET);
aSpacingStyle.SetBorderStyle(NS_SIDE_BOTTOM, NS_STYLE_BORDER_STYLE_BG_OUTSET);
aSpacingStyle.SetBorderStyle(NS_SIDE_RIGHT, NS_STYLE_BORDER_STYLE_BG_OUTSET);
nsIStyleContext* styleContext = mStyleContext;
const nsStyleColor* colorData = (const nsStyleColor*)
styleContext->GetStyleData(eStyleStruct_Color);
// Look until we find a style context with a NON-transparent background color
while (styleContext)
{
if ((colorData->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT)!=0)
{
nsIStyleContext* temp = styleContext;
styleContext = styleContext->GetParent();
if (temp != mStyleContext)
NS_RELEASE(temp);
colorData = (const nsStyleColor*)styleContext->GetStyleData(eStyleStruct_Color);
}
else
{
break;
}
}
// Yaahoo, we found a style context which has a background color
nscolor borderColor = 0xFFC0C0C0;
if (styleContext != nsnull)
{
borderColor = colorData->mBackgroundColor;
if (styleContext != mStyleContext)
NS_RELEASE(styleContext);
}
// if the border color is white, then shift to grey
if (borderColor == 0xFFFFFFFF)
borderColor = 0xFFC0C0C0;
aSpacingStyle.SetBorderColor(NS_SIDE_TOP, borderColor);
aSpacingStyle.SetBorderColor(NS_SIDE_LEFT, borderColor);
aSpacingStyle.SetBorderColor(NS_SIDE_BOTTOM, borderColor);
aSpacingStyle.SetBorderColor(NS_SIDE_RIGHT, borderColor);
}
PRBool nsTableFrame::ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult)
{
if (aValue.GetUnit() == eHTMLUnit_Pixel)
aResult = aValue.GetPixelValue();
else if (aValue.GetUnit() == eHTMLUnit_Empty)
aResult = aDefault;
else
{
NS_ERROR("Unit must be pixel or empty");
return PR_FALSE;
}
return PR_TRUE;
}
void nsTableFrame::MapBorderMarginPadding(nsIPresContext& aPresContext)
{
#if 0
// Check to see if the table has either cell padding or
// Cell spacing defined for the table. If true, then
// this setting overrides any specific border, margin or
// padding information in the cell. If these attributes
// are not defined, the the cells attributes are used
nsHTMLValue padding_value;
nsHTMLValue spacing_value;
nsHTMLValue border_value;
nsresult border_result;
nscoord padding = 0;
nscoord spacing = 0;
nscoord border = 1;
float p2t = aPresContext.GetPixelsToTwips();
nsIHTMLContent* table = (nsIHTMLContent*)mContent;
NS_ASSERTION(table,"Table Must not be null");
if (!table)
return;
nsStyleSpacing* spacingData = (nsStyleSpacing*)mStyleContext->GetMutableStyleData(eStyleStruct_Spacing);
border_result = table->GetAttribute(nsHTMLAtoms::border,border_value);
if (border_result == NS_CONTENT_ATTR_HAS_VALUE)
{
PRInt32 intValue = 0;
if (ConvertToPixelValue(border_value,1,intValue)) //XXX this is busted if this code is ever used again. MMP
border = NSIntPixelsToTwips(intValue, p2t);
}
MapHTMLBorderStyle(*spacingData,border);
#endif
}
NS_METHOD nsTableFrame::GetCellMarginData(nsTableCellFrame* aKidFrame, nsMargin& aMargin)
{
nsresult result = NS_ERROR_NOT_INITIALIZED;
if (nsnull != aKidFrame)
{
result = aKidFrame->GetMargin(aMargin);
}
return result;
}
//XXX: ok, this looks dumb now. but in a very short time this will get filled in
void nsTableFrame::GetTableBorder(nsMargin &aBorder)
{
if (NS_STYLE_BORDER_COLLAPSE==GetBorderCollapseStyle())
{
aBorder = mBorderEdges.mMaxBorderWidth;
}
else
{
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
spacing->GetBorder(aBorder);
}
}
/*
now I need to actually use gettableborderat, instead of assuming that the table border is homogenous
across rows and columns. in tableFrame, LayoutStrategy, and cellFrame, maybe rowFrame
need something similar for cell (for those with spans?)
*/
void nsTableFrame::GetTableBorderAt(nsMargin &aBorder, PRInt32 aRowIndex, PRInt32 aColIndex)
{
if (NS_STYLE_BORDER_COLLAPSE==GetBorderCollapseStyle())
{
nsBorderEdge *border = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_LEFT].ElementAt(aRowIndex));
if (border) {
aBorder.left = border->mWidth;
border = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_RIGHT].ElementAt(aRowIndex));
aBorder.right = border->mWidth;
border = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_TOP].ElementAt(aColIndex));
aBorder.top = border->mWidth;
border = (nsBorderEdge *)(mBorderEdges.mEdges[NS_SIDE_TOP].ElementAt(aColIndex));
aBorder.bottom = border->mWidth;
}
}
else
{
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
spacing->GetBorder(aBorder);
}
}
void nsTableFrame::GetTableBorderForRowGroup(nsTableRowGroupFrame * aRowGroupFrame, nsMargin &aBorder)
{
aBorder.SizeTo(0,0,0,0);
if (nsnull!=aRowGroupFrame)
{
if (NS_STYLE_BORDER_COLLAPSE==GetBorderCollapseStyle())
{
PRInt32 rowIndex = aRowGroupFrame->GetStartRowIndex();
PRInt32 rowCount;
aRowGroupFrame->GetRowCount(rowCount);
for ( ; rowIndex<rowCount; rowIndex++)
{
PRInt32 colIndex = 0;
nsCellMap *cellMap = GetCellMap();
PRInt32 colCount = cellMap->GetColCount();
for ( ; colIndex<colCount; colIndex++)
{
nsMargin border;
GetTableBorderAt (border, rowIndex, colIndex);
aBorder.top = PR_MAX(aBorder.top, border.top);
aBorder.right = PR_MAX(aBorder.right, border.right);
aBorder.bottom = PR_MAX(aBorder.bottom, border.bottom);
aBorder.left = PR_MAX(aBorder.left, border.left);
}
}
}
else
{
GetTableBorder (aBorder);
}
}
}
PRUint8 nsTableFrame::GetBorderCollapseStyle()
{
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
return tableStyle->mBorderCollapse;
}
// XXX: could cache this. But be sure to check style changes if you do!
nscoord nsTableFrame::GetCellSpacingX()
{
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
nscoord cellSpacing = 0;
PRUint8 borderCollapseStyle = GetBorderCollapseStyle();
if (NS_STYLE_BORDER_COLLAPSE!=borderCollapseStyle) {
if (tableStyle->mBorderSpacingX.GetUnit() == eStyleUnit_Coord) {
cellSpacing = tableStyle->mBorderSpacingX.GetCoordValue();
}
}
return cellSpacing;
}
// XXX: could cache this. But be sure to check style changes if you do!
nscoord nsTableFrame::GetCellSpacingY()
{
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
nscoord cellSpacing = 0;
PRUint8 borderCollapseStyle = GetBorderCollapseStyle();
if (NS_STYLE_BORDER_COLLAPSE!=borderCollapseStyle) {
if (tableStyle->mBorderSpacingY.GetUnit() == eStyleUnit_Coord) {
cellSpacing = tableStyle->mBorderSpacingY.GetCoordValue();
}
}
return cellSpacing;
}
// Get the cellpadding defined on the table. Each cell can override this with style
nscoord nsTableFrame::GetCellPadding()
{
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
nscoord cellPadding = -1;
if (tableStyle->mCellPadding.GetUnit() == eStyleUnit_Coord) {
cellPadding = tableStyle->mCellPadding.GetCoordValue();
}
return cellPadding;
}
void nsTableFrame::GetColumnsByType(const nsStyleUnit aType,
PRInt32& aOutNumColumns,
PRInt32 *& aOutColumnIndexes)
{
mColCache->GetColumnsByType(aType, aOutNumColumns, aOutColumnIndexes);
}
/* ----- global methods ----- */
nsresult
NS_NewTableFrame(nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsTableFrame* it = new nsTableFrame;
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
NS_METHOD nsTableFrame::GetTableFrame(nsIFrame *aSourceFrame, nsTableFrame *& aTableFrame)
{
nsresult rv = NS_ERROR_UNEXPECTED; // the value returned
aTableFrame = nsnull; // initialize out-param
nsIFrame *parentFrame=nsnull;
if (nsnull!=aSourceFrame)
{
// "result" is the result of intermediate calls, not the result we return from this method
nsresult result = aSourceFrame->GetParent((nsIFrame **)&parentFrame);
while ((NS_OK==result) && (nsnull!=parentFrame))
{
const nsStyleDisplay *display;
parentFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE == display->mDisplay)
{
aTableFrame = (nsTableFrame *)parentFrame;
rv = NS_OK; // only set if we found the table frame
break;
}
result = parentFrame->GetParent((nsIFrame **)&parentFrame);
}
}
NS_POSTCONDITION(nsnull!=aTableFrame, "unable to find table parent. aTableFrame null.");
NS_POSTCONDITION(NS_OK==rv, "unable to find table parent. result!=NS_OK");
return rv;
}
/* helper method for determining if this is a nested table or not */
// aReflowState must be the reflow state for this inner table frame, should have an assertion here for that
PRBool nsTableFrame::IsNested(const nsHTMLReflowState& aReflowState, const nsStylePosition *& aPosition) const
{
PRBool result = PR_FALSE;
// Walk up the reflow state chain until we find a cell or the root
const nsReflowState* rs = aReflowState.parentReflowState; // this is for the outer frame
if (rs)
rs = rs->parentReflowState; // and this is the parent of the outer frame
while (nsnull != rs)
{
const nsStyleDisplay *display;
rs->frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE==display->mDisplay)
{
result = PR_TRUE;
rs->frame->GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)aPosition));
break;
}
rs = rs->parentReflowState;
}
return result;
}
/* helper method for getting the width of the table's containing block */
nscoord nsTableFrame::GetTableContainerWidth(const nsHTMLReflowState& aReflowState)
{
const nsStyleDisplay *display;
nscoord parentWidth = aReflowState.availableWidth;
// Walk up the reflow state chain until we find a block
// frame. Our width is computed relative to there.
const nsReflowState* rs = &aReflowState;
nsTableCellFrame *lastCellFrame=nsnull;
while (nsnull != rs)
{
// if it's a block, use its max width
rs->frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_BLOCK==display->mDisplay)
{ // we found a block, see if it's really a table cell (which means we're a nested table)
PRBool skipThisBlock=PR_FALSE;
const nsReflowState* parentRS = rs->parentReflowState;
if (nsnull!=parentRS)
{
parentRS = parentRS->parentReflowState;
if (nsnull!=parentRS)
{
parentRS->frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE_CELL==display->mDisplay) {
if (PR_TRUE==gsDebugNT)
printf("%p: found a block pframe %p in a cell, skipping it.\n", aReflowState.frame, rs->frame);
skipThisBlock = PR_TRUE;
}
}
}
// at this point, we know we have a block. If we're sure it's not a table cell pframe,
// then we can use it
if (PR_FALSE==skipThisBlock)
{
if (NS_UNCONSTRAINEDSIZE!=rs->availableWidth)
{
parentWidth = rs->availableWidth;
if (PR_TRUE==gsDebugNT)
printf("%p: found a block frame %p, returning width %d\n",
aReflowState.frame, rs->frame, parentWidth);
break;
}
}
}
// or if it's another table (we're nested) use its computed width
if (rs->frame!=aReflowState.frame)
{
nsMargin borderPadding;
const nsStylePosition* tablePosition;
const nsStyleSpacing* spacing;
rs->frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE_CELL==display->mDisplay)
{ // if it's a cell and the cell has a specified width, use it
// Compute and subtract out the insets (sum of border and padding) for the table
lastCellFrame = (nsTableCellFrame*)(rs->frame);
const nsStylePosition* cellPosition;
lastCellFrame->GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)cellPosition));
if (eStyleUnit_Coord == cellPosition->mWidth.GetUnit())
{
nsTableFrame *tableParent;
nsresult rv=GetTableFrame(lastCellFrame, tableParent);
if ((NS_OK==rv) && (nsnull!=tableParent) && (nsnull!=tableParent->mColumnWidths))
{
parentWidth=0;
PRInt32 colIndex;
lastCellFrame->GetColIndex(colIndex);
PRInt32 colSpan = tableParent->GetEffectiveColSpan(colIndex, lastCellFrame);
for (PRInt32 i=0; i<colSpan; i++)
parentWidth += tableParent->GetColumnWidth(colIndex);
break;
}
// if the column width of this cell is already computed, it overrides the attribute
// otherwise, use the attribute becauase the actual column width has not yet been computed
else
{
parentWidth = cellPosition->mWidth.GetCoordValue();
// subtract out cell border and padding
lastCellFrame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
spacing->CalcBorderPaddingFor(lastCellFrame, borderPadding); //XXX: COLLAPSE
parentWidth -= (borderPadding.right + borderPadding.left);
if (PR_TRUE==gsDebugNT)
printf("%p: found a cell frame %p with fixed coord width %d, returning parentWidth %d\n",
aReflowState.frame, lastCellFrame, cellPosition->mWidth.GetCoordValue(), parentWidth);
break;
}
}
}
else
{
rs->frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE==display->mDisplay)
{
// we only want to do this for inner table frames, so check the frame's parent to make sure it is an outer table frame
// we know that if both the frame and it's parent map to NS_STYLE_DISPLAY_TABLE, then we have an inner table frame
nsIFrame * tableFrameParent;
rs->frame->GetParent(&tableFrameParent);
tableFrameParent->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
if (NS_STYLE_DISPLAY_TABLE==display->mDisplay)
{
/* We found the nearest containing table (actually, the inner table).
This defines what our percentage size is relative to. Use its desired width
as the basis for computing our width.
**********************************************************************************
Nav4 compatibility code: if the inner table has a percent width and the outer
table has an auto width, the parentWidth is the width the containing cell would be
without the inner table.
**********************************************************************************
*/
// Compute and subtract out the insets (sum of border and padding) for the table
rs->frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)tablePosition);
rs->frame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
if (eStyleUnit_Auto == tablePosition->mWidth.GetUnit())
{
parentWidth = NS_UNCONSTRAINEDSIZE;
if (nsnull != ((nsTableFrame*)(rs->frame))->mColumnWidths)
{
parentWidth=0;
PRInt32 colIndex;
lastCellFrame->GetColIndex(colIndex);
PRInt32 colSpan = ((nsTableFrame*)(rs->frame))->GetEffectiveColSpan(colIndex, lastCellFrame);
for (PRInt32 i = 0; i<colSpan; i++)
parentWidth += ((nsTableFrame*)(rs->frame))->GetColumnWidth(i+colIndex);
// subtract out cell border and padding
lastCellFrame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
spacing->CalcBorderPaddingFor(lastCellFrame, borderPadding); //XXX: COLLAPSE
parentWidth -= (borderPadding.right + borderPadding.left);
if (PR_TRUE==gsDebugNT)
printf("%p: found a table frame %p with auto width, returning parentWidth %d from cell in col %d with span %d\n",
aReflowState.frame, rs->frame, parentWidth, colIndex, colSpan);
}
else
{
if (PR_TRUE==gsDebugNT)
printf("%p: found a table frame %p with auto width, returning parentWidth %d because parent has no info yet.\n",
aReflowState.frame, rs->frame, parentWidth);
}
}
else
{
if (PR_TRUE==((nsTableFrame*)(rs->frame))->IsColumnWidthsSet())
{
parentWidth=0;
PRInt32 colIndex;
lastCellFrame->GetColIndex(colIndex);
PRInt32 colSpan = ((nsTableFrame*)(rs->frame))->GetEffectiveColSpan(colIndex, lastCellFrame);
for (PRInt32 i = 0; i<colSpan; i++)
parentWidth += ((nsTableFrame*)(rs->frame))->GetColumnWidth(i+colIndex);
// factor in the cell
lastCellFrame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
spacing->CalcBorderPaddingFor(lastCellFrame, borderPadding); //XXX: COLLAPSE
parentWidth -= (borderPadding.right + borderPadding.left);
}
else
{
nsSize tableSize;
rs->frame->GetSize(tableSize);
parentWidth = tableSize.width;
if (0!=tableSize.width)
{ // the table has been sized, so we can compute the available space for the child
((nsTableFrame *)(rs->frame))->GetTableBorder (borderPadding);
nsMargin padding;
spacing->GetPadding(padding);
borderPadding += padding;
parentWidth -= (borderPadding.right + borderPadding.left);
// factor in the cell
lastCellFrame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
spacing->CalcBorderPaddingFor(lastCellFrame, borderPadding); //XXX: COLLAPSE
parentWidth -= (borderPadding.right + borderPadding.left);
}
else
{
// the table has not yet been sized, so we need to infer the available space
parentWidth = rs->availableWidth;
if (eStyleUnit_Percent == tablePosition->mWidth.GetUnit())
{
float percent = tablePosition->mWidth.GetPercentValue();
parentWidth = (nscoord)(percent*((float)parentWidth));
}
}
}
if (PR_TRUE==gsDebugNT)
printf("%p: found a table frame %p, returning parentWidth %d \n",
aReflowState.frame, rs->frame, parentWidth);
}
break;
}
}
}
}
rs = rs->parentReflowState;
}
return parentWidth;
}
// aSpecifiedTableWidth is filled if the table witdth is not auto
PRBool nsTableFrame::TableIsAutoWidth(nsTableFrame *aTableFrame,
nsIStyleContext *aTableStyle,
const nsHTMLReflowState& aReflowState,
nscoord& aSpecifiedTableWidth)
{
NS_ASSERTION(nsnull!=aTableStyle, "bad arg - aTableStyle");
PRBool result = PR_TRUE; // the default
if (nsnull!=aTableStyle)
{
nsStylePosition* tablePosition = (nsStylePosition*)aTableStyle->GetStyleData(eStyleStruct_Position);
nsMargin borderPadding;
const nsStyleSpacing* spacing;
switch (tablePosition->mWidth.GetUnit()) {
case eStyleUnit_Auto: // specified auto width
case eStyleUnit_Proportional: // illegal for table, so ignored
break;
case eStyleUnit_Inherit:
// get width of parent and see if it is a specified value or not
// XXX for now, just return true
break;
case eStyleUnit_Coord:
{
nscoord coordWidth = tablePosition->mWidth.GetCoordValue();
// NAV4 compatibility. If coord width is 0, do nothing so we get same result as "auto"
if (0!=coordWidth)
{
aSpecifiedTableWidth = coordWidth;
aReflowState.frame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
spacing->CalcBorderPaddingFor(aReflowState.frame, borderPadding); //XXX: COLLAPSE
aSpecifiedTableWidth -= (borderPadding.right + borderPadding.left);
result = PR_FALSE;
}
}
break;
case eStyleUnit_Percent:
{
// set aSpecifiedTableWidth to be the given percent of the parent.
// first, get the effective parent width (parent width - insets)
nscoord parentWidth = nsTableFrame::GetTableContainerWidth(aReflowState);
if (NS_UNCONSTRAINEDSIZE!=parentWidth)
{
aReflowState.frame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
spacing->CalcBorderPaddingFor(aReflowState.frame, borderPadding); //XXX: COLLAPSE
parentWidth -= (borderPadding.right + borderPadding.left);
// then set aSpecifiedTableWidth to the given percent of the computed parent width
float percent = tablePosition->mWidth.GetPercentValue();
aSpecifiedTableWidth = (PRInt32)(parentWidth*percent);
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
printf("%p: TableIsAutoWidth setting aSpecifiedTableWidth = %d with parentWidth = %d and percent = %f\n",
aTableFrame, aSpecifiedTableWidth, parentWidth, percent);
}
else
{
aSpecifiedTableWidth=parentWidth;
if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
printf("%p: TableIsAutoWidth setting aSpecifiedTableWidth = %d with parentWidth = %d\n",
aTableFrame, aSpecifiedTableWidth, parentWidth);
}
result = PR_FALSE;
}
break;
default:
break;
}
}
return result;
}
nscoord nsTableFrame::GetMinCaptionWidth()
{
nsIFrame *outerTableFrame=nsnull;
GetParent(&outerTableFrame);
return (((nsTableOuterFrame *)outerTableFrame)->GetMinCaptionWidth());
}
/** return the minimum width of the table. Return 0 if the min width is unknown. */
nscoord nsTableFrame::GetMinTableWidth()
{
nscoord result = 0;
if (nsnull!=mTableLayoutStrategy)
result = mTableLayoutStrategy->GetTableMinWidth();
return result;
}
/** return the maximum width of the table. Return 0 if the max width is unknown. */
nscoord nsTableFrame::GetMaxTableWidth()
{
nscoord result = 0;
if (nsnull!=mTableLayoutStrategy)
result = mTableLayoutStrategy->GetTableMaxWidth();
return result;
}
void nsTableFrame::SetMaxElementSize(nsSize* aMaxElementSize)
{
if (nsnull!=mTableLayoutStrategy)
mTableLayoutStrategy->SetMaxElementSize(aMaxElementSize);
}
PRBool nsTableFrame::RequiresPass1Layout()
{
const nsStyleTable* tableStyle;
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
return (PRBool)(NS_STYLE_TABLE_LAYOUT_FIXED!=tableStyle->mLayoutStrategy);
}
NS_IMETHODIMP
nsTableFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("Table", aResult);
}
// This assumes that aFrame is a scroll frame if
// XXX make this a macro if it becomes an issue
// XXX it has the side effect of setting mHasScrollableRowGroup
nsTableRowGroupFrame*
nsTableFrame::GetRowGroupFrameFor(nsIFrame* aFrame, const nsStyleDisplay* aDisplay)
{
nsIFrame* result = nsnull;
if (IsRowGroup(aDisplay->mDisplay)) {
nsresult rv = aFrame->QueryInterface(kITableRowGroupFrameIID, (void **)&result);
if (NS_SUCCEEDED(rv) && (nsnull != result)) {
;
} else { // it is a scroll frame that contains the row group frame
aFrame->FirstChild(nsnull, &result);
mHasScrollableRowGroup = PR_TRUE;
}
}
return (nsTableRowGroupFrame*)result;
}
PRBool
nsTableFrame::IsFinalPass(const nsReflowState& aState)
{
return (NS_UNCONSTRAINEDSIZE != aState.availableWidth) ||
(NS_UNCONSTRAINEDSIZE != aState.availableHeight);
}
// nsTableIterator
nsTableIterator::nsTableIterator(nsIFrame& aSource,
nsTableIteration aType)
{
nsIFrame* firstChild;
aSource.FirstChild(nsnull, &firstChild);
Init(firstChild, aType);
}
nsTableIterator::nsTableIterator(nsFrameList& aSource,
nsTableIteration aType)
{
nsIFrame* firstChild = aSource.FirstChild();
Init(firstChild, aType);
}
void nsTableIterator::Init(nsIFrame* aFirstChild,
nsTableIteration aType)
{
mFirstListChild = aFirstChild;
mFirstChild = aFirstChild;
mCurrentChild = nsnull;
mLeftToRight = (eTableRTL == aType) ? PR_FALSE : PR_TRUE;
mCount = -1;
if (!mFirstChild) {
return;
}
if (eTableDIR == aType) {
nsTableFrame* table = nsnull;
nsresult rv = nsTableFrame::GetTableFrame(mFirstChild, table);
if (NS_SUCCEEDED(rv) && (table != nsnull)) {
const nsStyleDisplay* display;
table->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
mLeftToRight = (NS_STYLE_DIRECTION_LTR == display->mDirection);
}
else {
NS_ASSERTION(PR_FALSE, "source of table iterator is not part of a table");
return;
}
}
if (!mLeftToRight) {
mCount = 0;
nsIFrame* nextChild;
mFirstChild->GetNextSibling(&nextChild);
while (nsnull != nextChild) {
mCount++;
mFirstChild = nextChild;
nextChild->GetNextSibling(&nextChild);
}
}
}
nsIFrame* nsTableIterator::First()
{
mCurrentChild = mFirstChild;
return mCurrentChild;
}
nsIFrame* nsTableIterator::Next()
{
if (!mCurrentChild) {
return nsnull;
}
if (mLeftToRight) {
mCurrentChild->GetNextSibling(&mCurrentChild);
return mCurrentChild;
}
else {
nsIFrame* targetChild = mCurrentChild;
mCurrentChild = nsnull;
nsIFrame* child = mFirstListChild;
while (child && (child != targetChild)) {
mCurrentChild = child;
child->GetNextSibling(&child);
}
return mCurrentChild;
}
}
PRBool nsTableIterator::IsLeftToRight()
{
return mLeftToRight;
}
PRInt32 nsTableIterator::Count()
{
if (-1 == mCount) {
mCount = 0;
nsIFrame* child = mFirstListChild;
while (nsnull != child) {
mCount++;
child->GetNextSibling(&child);
}
}
return mCount;
}
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