blob: fadd57bc56e04058609f47ee3cab14dc1437fe8d [file] [log] [blame]
/*
* Copyright (C) 2008 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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 "modules/accessibility/AXTableColumn.h"
#include "core/layout/LayoutTableCell.h"
#include "modules/accessibility/AXObjectCacheImpl.h"
#include "modules/accessibility/AXTableCell.h"
namespace blink {
using namespace HTMLNames;
AXTableColumn::AXTableColumn(AXObjectCacheImpl& axObjectCache)
: AXMockObject(axObjectCache)
{
}
AXTableColumn::~AXTableColumn()
{
}
AXTableColumn* AXTableColumn::create(AXObjectCacheImpl& axObjectCache)
{
return new AXTableColumn(axObjectCache);
}
void AXTableColumn::setParent(AXObject* parent)
{
AXMockObject::setParent(parent);
clearChildren();
}
LayoutRect AXTableColumn::elementRect() const
{
// this will be filled in when addChildren is called
return m_columnRect;
}
void AXTableColumn::headerObjectsForColumn(AXObjectVector& headers)
{
if (!m_parent)
return;
LayoutObject* layoutObject = m_parent->layoutObject();
if (!layoutObject)
return;
if (!m_parent->isAXTable())
return;
if (toAXTable(m_parent)->isAriaTable()) {
for (const auto& cell : children()) {
if (cell->roleValue() == ColumnHeaderRole)
headers.append(cell);
}
return;
}
if (!layoutObject->isTable())
return;
LayoutTable* table = toLayoutTable(layoutObject);
LayoutTableSection* tableSection = table->topSection();
for (; tableSection; tableSection = table->sectionBelow(tableSection, SkipEmptySections)) {
unsigned numCols = tableSection->numColumns();
if (m_columnIndex >= numCols)
continue;
unsigned numRows = tableSection->numRows();
for (unsigned r = 0; r < numRows; r++) {
LayoutTableCell* layoutCell = tableSection->primaryCellAt(r, m_columnIndex);
if (!layoutCell)
continue;
AXObject* cell = axObjectCache().getOrCreate(layoutCell->node());
if (!cell || !cell->isTableCell() || headers.contains(cell))
continue;
if (toAXTableCell(cell)->scanToDecideHeaderRole() == ColumnHeaderRole)
headers.append(cell);
}
}
}
AXObject* AXTableColumn::headerObject()
{
AXObjectVector headers;
headerObjectsForColumn(headers);
if (!headers.size())
return 0;
return headers[0].get();
}
bool AXTableColumn::computeAccessibilityIsIgnored(IgnoredReasons* ignoredReasons) const
{
if (!m_parent)
return true;
if (!m_parent->accessibilityIsIgnored())
return false;
if (ignoredReasons)
m_parent->computeAccessibilityIsIgnored(ignoredReasons);
return true;
}
void AXTableColumn::addChildren()
{
ASSERT(!isDetached());
ASSERT(!m_haveChildren);
m_haveChildren = true;
if (!m_parent || !m_parent->isAXTable())
return;
AXTable* parentTable = toAXTable(m_parent);
int numRows = parentTable->rowCount();
for (int i = 0; i < numRows; i++) {
AXTableCell* cell = parentTable->cellForColumnAndRow(m_columnIndex, i);
if (!cell)
continue;
// make sure the last one isn't the same as this one (rowspan cells)
if (m_children.size() > 0 && m_children.last() == cell)
continue;
m_children.append(cell);
m_columnRect.unite(cell->elementRect());
}
}
} // namespace blink