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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "TableFormattingState.h"
#include "RenderObject.h"
#include "TableFormattingContext.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
namespace Layout {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(TableFormattingState);
static UniqueRef<TableGrid> ensureTableGrid(const ElementBox& tableBox)
{
auto tableGrid = makeUniqueRef<TableGrid>();
auto& tableStyle = tableBox.style();
auto shouldApplyBorderSpacing = tableStyle.borderCollapse() == BorderCollapse::Separate;
tableGrid->setHorizontalSpacing(LayoutUnit { shouldApplyBorderSpacing ? tableStyle.horizontalBorderSpacing() : 0 });
tableGrid->setVerticalSpacing(LayoutUnit { shouldApplyBorderSpacing ? tableStyle.verticalBorderSpacing() : 0 });
auto* firstChild = tableBox.firstChild();
if (!firstChild) {
// The rare case of empty table.
return tableGrid;
}
const Box* tableCaption = nullptr;
const Box* colgroup = nullptr;
// Table caption is an optional element; if used, it is always the first child of a <table>.
if (firstChild->isTableCaption())
tableCaption = firstChild;
// The <colgroup> must appear after any optional <caption> element but before any <thead>, <th>, <tbody>, <tfoot> and <tr> element.
auto* colgroupCandidate = firstChild;
if (tableCaption)
colgroupCandidate = tableCaption->nextSibling();
if (colgroupCandidate->isTableColumnGroup())
colgroup = colgroupCandidate;
if (colgroup) {
auto& columns = tableGrid->columns();
for (auto* column = downcast<ElementBox>(*colgroup).firstChild(); column; column = column->nextSibling()) {
ASSERT(column->isTableColumn());
auto columnSpanCount = column->columnSpan();
ASSERT(columnSpanCount > 0);
while (columnSpanCount--)
columns.addColumn(downcast<ElementBox>(*column));
}
}
auto* firstSection = colgroup ? colgroup->nextSibling() : tableCaption ? tableCaption->nextSibling() : firstChild;
for (auto* section = firstSection; section; section = section->nextSibling()) {
ASSERT(section->isTableHeader() || section->isTableBody() || section->isTableFooter());
for (auto* row = downcast<ElementBox>(*section).firstChild(); row; row = row->nextSibling()) {
ASSERT(row->isTableRow());
for (auto* cell = downcast<ElementBox>(*row).firstChild(); cell; cell = cell->nextSibling()) {
ASSERT(cell->isTableCell());
tableGrid->appendCell(downcast<ElementBox>(*cell));
}
}
}
return tableGrid;
}
TableFormattingState::TableFormattingState(LayoutState& layoutState, const ElementBox& tableBox)
: FormattingState(Type::Table, layoutState)
, m_tableGrid(ensureTableGrid(tableBox))
{
}
TableFormattingState::~TableFormattingState()
{
}
}
}
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