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/*
* 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 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 "config.h"
#include "AccessibilityTableRow.h"
#include "AXObjectCache.h"
#include "AccessibilityTable.h"
#include "AccessibilityTableCell.h"
#include "HTMLNames.h"
#include "HTMLTableRowElement.h"
#include "RenderObject.h"
#include "RenderTableCell.h"
#include "RenderTableRow.h"
namespace WebCore {
using namespace HTMLNames;
AccessibilityTableRow::AccessibilityTableRow(RenderObject* renderer)
: AccessibilityRenderObject(renderer)
{
}
AccessibilityTableRow::~AccessibilityTableRow()
{
}
Ref<AccessibilityTableRow> AccessibilityTableRow::create(RenderObject* renderer)
{
return adoptRef(*new AccessibilityTableRow(renderer));
}
AccessibilityRole AccessibilityTableRow::determineAccessibilityRole()
{
if (!isTableRow())
return AccessibilityRenderObject::determineAccessibilityRole();
if ((m_ariaRole = determineAriaRoleAttribute()) != UnknownRole)
return m_ariaRole;
return RowRole;
}
bool AccessibilityTableRow::isTableRow() const
{
AccessibilityObject* table = parentTable();
return is<AccessibilityTable>(table) && downcast<AccessibilityTable>(*table).isExposableThroughAccessibility();
}
AccessibilityObject* AccessibilityTableRow::observableObject() const
{
// This allows the table to be the one who sends notifications about tables.
return parentTable();
}
bool AccessibilityTableRow::computeAccessibilityIsIgnored() const
{
AccessibilityObjectInclusion decision = defaultObjectInclusion();
if (decision == IncludeObject)
return false;
if (decision == IgnoreObject)
return true;
if (!isTableRow())
return AccessibilityRenderObject::computeAccessibilityIsIgnored();
return false;
}
AccessibilityTable* AccessibilityTableRow::parentTable() const
{
// The parent table might not be the direct ancestor of the row unfortunately. ARIA states that role="grid" should
// only have "row" elements, but if not, we still should handle it gracefully by finding the right table.
for (AccessibilityObject* parent = parentObject(); parent; parent = parent->parentObject()) {
// If this is a non-anonymous table object, but not an accessibility table, we should stop because we don't want to
// choose another ancestor table as this row's table.
if (is<AccessibilityTable>(*parent)) {
auto& parentTable = downcast<AccessibilityTable>(*parent);
if (parentTable.isExposableThroughAccessibility())
return &parentTable;
if (parentTable.node())
break;
}
}
return nullptr;
}
AccessibilityObject* AccessibilityTableRow::headerObject()
{
if (!m_renderer || !m_renderer->isTableRow())
return nullptr;
const auto& rowChildren = children();
if (!rowChildren.size())
return nullptr;
// check the first element in the row to see if it is a TH element
AccessibilityObject* cell = rowChildren[0].get();
if (!is<AccessibilityTableCell>(*cell))
return nullptr;
RenderObject* cellRenderer = downcast<AccessibilityTableCell>(*cell).renderer();
if (!cellRenderer)
return nullptr;
Node* cellNode = cellRenderer->node();
if (!cellNode || !cellNode->hasTagName(thTag))
return nullptr;
return cell;
}
void AccessibilityTableRow::addChildren()
{
AccessibilityRenderObject::addChildren();
// "ARIA 1.1, If the set of columns which is present in the DOM is contiguous, and if there are no cells which span more than one row or
// column in that set, then authors may place aria-colindex on each row, setting the value to the index of the first column of the set."
// Update child cells' ariaColIndex if there's an aria-colindex value set for the row. So the cell doesn't have to go through the siblings
// to calculate the index.
int colIndex = ariaColumnIndex();
if (colIndex == -1)
return;
unsigned index = 0;
for (const auto& cell : children()) {
if (is<AccessibilityTableCell>(*cell))
downcast<AccessibilityTableCell>(*cell).setARIAColIndexFromRow(colIndex + index);
index++;
}
}
int AccessibilityTableRow::ariaColumnIndex() const
{
const AtomicString& colIndexValue = getAttribute(aria_colindexAttr);
if (colIndexValue.toInt() >= 1)
return colIndexValue.toInt();
return -1;
}
int AccessibilityTableRow::ariaRowIndex() const
{
const AtomicString& rowIndexValue = getAttribute(aria_rowindexAttr);
if (rowIndexValue.toInt() >= 1)
return rowIndexValue.toInt();
return -1;
}
} // namespace WebCore
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