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/*
* Copyright (C) 2009 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/AXARIAGridCell.h"
#include "modules/accessibility/AXObjectCacheImpl.h"
#include "modules/accessibility/AXTable.h"
#include "modules/accessibility/AXTableRow.h"
namespace blink {
AXARIAGridCell::AXARIAGridCell(LayoutObject* layoutObject, AXObjectCacheImpl& axObjectCache)
: AXTableCell(layoutObject, axObjectCache)
{
}
AXARIAGridCell::~AXARIAGridCell()
{
}
AXARIAGridCell* AXARIAGridCell::create(LayoutObject* layoutObject, AXObjectCacheImpl& axObjectCache)
{
return new AXARIAGridCell(layoutObject, axObjectCache);
}
bool AXARIAGridCell::isAriaColumnHeader() const
{
const AtomicString& role = getAttribute(HTMLNames::roleAttr);
return equalIgnoringCase(role, "columnheader");
}
bool AXARIAGridCell::isAriaRowHeader() const
{
const AtomicString& role = getAttribute(HTMLNames::roleAttr);
return equalIgnoringCase(role, "rowheader");
}
AXObject* AXARIAGridCell::parentTable() const
{
AXObject* parent = parentObjectUnignored();
if (!parent)
return 0;
if (parent->isAXTable())
return parent;
// It could happen that we hadn't reached the parent table yet (in
// case objects for rows were not ignoring accessibility) so for
// that reason we need to run parentObjectUnignored once again.
parent = parent->parentObjectUnignored();
if (!parent || !parent->isAXTable())
return 0;
return parent;
}
void AXARIAGridCell::rowIndexRange(std::pair<unsigned, unsigned>& rowRange)
{
AXObject* parent = parentObjectUnignored();
if (!parent)
return;
if (parent->isTableRow()) {
// We already got a table row, use its API.
rowRange.first = toAXTableRow(parent)->rowIndex();
} else if (parent->isAXTable()) {
// We reached the parent table, so we need to inspect its
// children to determine the row index for the cell in it.
unsigned columnCount = toAXTable(parent)->columnCount();
if (!columnCount)
return;
const auto& siblings = parent->children();
unsigned childrenSize = siblings.size();
for (unsigned k = 0; k < childrenSize; ++k) {
if (siblings[k].get() == this) {
rowRange.first = k / columnCount;
break;
}
}
}
// as far as I can tell, grid cells cannot span rows
rowRange.second = 1;
}
void AXARIAGridCell::columnIndexRange(std::pair<unsigned, unsigned>& columnRange)
{
AXObject* parent = parentObjectUnignored();
if (!parent)
return;
if (!parent->isTableRow() && !parent->isAXTable())
return;
const auto& siblings = parent->children();
unsigned childrenSize = siblings.size();
for (unsigned k = 0; k < childrenSize; ++k) {
if (siblings[k].get() == this) {
columnRange.first = k;
break;
}
}
// as far as I can tell, grid cells cannot span columns
columnRange.second = 1;
}
AccessibilityRole AXARIAGridCell::scanToDecideHeaderRole()
{
if (isAriaRowHeader())
return RowHeaderRole;
if (isAriaColumnHeader())
return ColumnHeaderRole;
return CellRole;
}
} // namespace blink